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-rw-r--r--eel/.gitignore1
-rwxr-xr-xeel/check-eel3
-rw-r--r--eel/check-program.c59
-rw-r--r--eel/eel-art-extensions.c191
-rw-r--r--eel/eel-art-extensions.h61
-rw-r--r--eel/eel-canvas.c4149
-rw-r--r--eel/eel-canvas.h497
-rw-r--r--eel/eel-debug.c105
-rw-r--r--eel/eel-debug.h40
-rw-r--r--eel/eel-glib-extensions.h30
-rw-r--r--eel/eel-graphic-effects.c165
-rw-r--r--eel/eel-graphic-effects.h32
-rw-r--r--eel/eel-gtk-extensions.c93
-rw-r--r--eel/eel-gtk-extensions.h37
-rw-r--r--eel/eel-lib-self-check-functions.c35
-rw-r--r--eel/eel-lib-self-check-functions.h45
-rw-r--r--eel/eel-self-checks.c203
-rw-r--r--eel/eel-self-checks.h78
-rw-r--r--eel/eel-stock-dialogs.c539
-rw-r--r--eel/eel-stock-dialogs.h75
-rw-r--r--eel/eel-string.c476
-rw-r--r--eel/eel-string.h79
-rw-r--r--eel/eel-vfs-extensions.c195
-rw-r--r--eel/eel-vfs-extensions.h50
-rw-r--r--eel/eel.h32
-rw-r--r--eel/meson.build57
26 files changed, 7327 insertions, 0 deletions
diff --git a/eel/.gitignore b/eel/.gitignore
new file mode 100644
index 0000000..6ea0174
--- /dev/null
+++ b/eel/.gitignore
@@ -0,0 +1 @@
+/check-program
diff --git a/eel/check-eel b/eel/check-eel
new file mode 100755
index 0000000..d1c67b6
--- /dev/null
+++ b/eel/check-eel
@@ -0,0 +1,3 @@
+#!/bin/sh
+./check-program --g-fatal-warnings --sm-disable
+
diff --git a/eel/check-program.c b/eel/check-program.c
new file mode 100644
index 0000000..1e0f0a3
--- /dev/null
+++ b/eel/check-program.c
@@ -0,0 +1,59 @@
+/* check-program.c: A simple driver for eel self checks.
+ *
+ * Copyright (C) 2000 Eazel, Inc.
+ *
+ * The Gnome Library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Gnome Library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with the Gnome Library; see the file COPYING.LIB. If not,
+ * see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Ramiro Estrugo <ramiro@eazel.com>
+ */
+
+#include <config.h>
+
+#include <eel/eel-debug.h>
+#include <eel/eel-glib-extensions.h>
+#include <eel/eel-lib-self-check-functions.h>
+#include <eel/eel-self-checks.h>
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
+#include <libxml/parser.h>
+#include <stdlib.h>
+
+int
+main (int argc,
+ char *argv[])
+{
+#if !defined (EEL_OMIT_SELF_CHECK)
+
+ eel_make_warnings_and_criticals_stop_in_debugger ();
+
+
+ LIBXML_TEST_VERSION
+ gtk_init (&argc,
+ &argv);
+
+ /* Run the checks for eel twice. */
+
+ eel_run_lib_self_checks ();
+ eel_exit_if_self_checks_failed ();
+
+ eel_run_lib_self_checks ();
+ eel_exit_if_self_checks_failed ();
+
+ eel_debug_shut_down ();
+
+#endif /* !EEL_OMIT_SELF_CHECK */
+
+ return EXIT_SUCCESS;
+}
diff --git a/eel/eel-art-extensions.c b/eel/eel-art-extensions.c
new file mode 100644
index 0000000..f9f4c9a
--- /dev/null
+++ b/eel/eel-art-extensions.c
@@ -0,0 +1,191 @@
+/* eel-art-extensions.c - implementation of libart extension functions.
+ *
+ * Copyright (C) 2000 Eazel, Inc.
+ *
+ * The Gnome Library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Gnome Library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with the Gnome Library; see the file COPYING.LIB. If not,
+ * see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Darin Adler <darin@eazel.com>
+ * Ramiro Estrugo <ramiro@eazel.com>
+ */
+
+#include <config.h>
+
+#include "eel-art-extensions.h"
+#include "eel-lib-self-check-functions.h"
+#include <math.h>
+
+const EelDRect eel_drect_empty = { 0.0, 0.0, 0.0, 0.0 };
+const EelIRect eel_irect_empty = { 0, 0, 0, 0 };
+
+static void
+eel_irect_copy (EelIRect *dest,
+ const EelIRect *src)
+{
+ dest->x0 = src->x0;
+ dest->y0 = src->y0;
+ dest->x1 = src->x1;
+ dest->y1 = src->y1;
+}
+
+static gboolean
+eel_irect_is_empty (const EelIRect *src)
+{
+ return (src->x1 <= src->x0 ||
+ src->y1 <= src->y0);
+}
+
+void
+eel_irect_union (EelIRect *dest,
+ const EelIRect *src1,
+ const EelIRect *src2)
+{
+ if (eel_irect_is_empty (src1))
+ {
+ eel_irect_copy (dest, src2);
+ }
+ else if (eel_irect_is_empty (src2))
+ {
+ eel_irect_copy (dest, src1);
+ }
+ else
+ {
+ dest->x0 = MIN (src1->x0, src2->x0);
+ dest->y0 = MIN (src1->y0, src2->y0);
+ dest->x1 = MAX (src1->x1, src2->x1);
+ dest->y1 = MAX (src1->y1, src2->y1);
+ }
+}
+
+static void
+eel_irect_intersect (EelIRect *dest,
+ const EelIRect *src1,
+ const EelIRect *src2)
+{
+ dest->x0 = MAX (src1->x0, src2->x0);
+ dest->y0 = MAX (src1->y0, src2->y0);
+ dest->x1 = MIN (src1->x1, src2->x1);
+ dest->y1 = MIN (src1->y1, src2->y1);
+}
+
+/**
+ * eel_irect_get_width:
+ *
+ * @rectangle: An EelIRect.
+ *
+ * Returns: The width of the rectangle.
+ *
+ */
+int
+eel_irect_get_width (EelIRect rectangle)
+{
+ return rectangle.x1 - rectangle.x0;
+}
+
+/**
+ * eel_irect_get_height:
+ *
+ * @rectangle: An EelIRect.
+ *
+ * Returns: The height of the rectangle.
+ *
+ */
+int
+eel_irect_get_height (EelIRect rectangle)
+{
+ return rectangle.y1 - rectangle.y0;
+}
+
+
+static void
+eel_drect_copy (EelDRect *dest,
+ const EelDRect *src)
+{
+ dest->x0 = src->x0;
+ dest->y0 = src->y0;
+ dest->x1 = src->x1;
+ dest->y1 = src->y1;
+}
+
+static gboolean
+eel_drect_is_empty (const EelDRect *src)
+{
+ return (src->x1 <= src->x0 || src->y1 <= src->y0);
+}
+
+void
+eel_drect_union (EelDRect *dest,
+ const EelDRect *src1,
+ const EelDRect *src2)
+{
+ if (eel_drect_is_empty (src1))
+ {
+ eel_drect_copy (dest, src2);
+ }
+ else if (eel_drect_is_empty (src2))
+ {
+ eel_drect_copy (dest, src1);
+ }
+ else
+ {
+ dest->x0 = MIN (src1->x0, src2->x0);
+ dest->y0 = MIN (src1->y0, src2->y0);
+ dest->x1 = MAX (src1->x1, src2->x1);
+ dest->y1 = MAX (src1->y1, src2->y1);
+ }
+}
+
+gboolean
+eel_irect_hits_irect (EelIRect rectangle_a,
+ EelIRect rectangle_b)
+{
+ EelIRect intersection;
+ eel_irect_intersect (&intersection, &rectangle_a, &rectangle_b);
+ return !eel_irect_is_empty (&intersection);
+}
+
+gboolean
+eel_irect_equal (EelIRect rectangle_a,
+ EelIRect rectangle_b)
+{
+ return rectangle_a.x0 == rectangle_b.x0
+ && rectangle_a.y0 == rectangle_b.y0
+ && rectangle_a.x1 == rectangle_b.x1
+ && rectangle_a.y1 == rectangle_b.y1;
+}
+
+EelIRect
+eel_irect_offset_by (EelIRect rectangle,
+ int x,
+ int y)
+{
+ rectangle.x0 += x;
+ rectangle.x1 += x;
+ rectangle.y0 += y;
+ rectangle.y1 += y;
+
+ return rectangle;
+}
+
+EelIRect
+eel_irect_scale_by (EelIRect rectangle,
+ double scale)
+{
+ rectangle.x0 *= scale;
+ rectangle.x1 *= scale;
+ rectangle.y0 *= scale;
+ rectangle.y1 *= scale;
+
+ return rectangle;
+}
diff --git a/eel/eel-art-extensions.h b/eel/eel-art-extensions.h
new file mode 100644
index 0000000..b9dde53
--- /dev/null
+++ b/eel/eel-art-extensions.h
@@ -0,0 +1,61 @@
+
+/* eel-art-extensions.h - interface of libart extension functions.
+
+ Copyright (C) 2000 Eazel, Inc.
+
+ The Gnome Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The Gnome Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the Gnome Library; see the file COPYING.LIB. If not,
+ see <http://www.gnu.org/licenses/>.
+
+ Authors: Darin Adler <darin@eazel.com>
+ Ramiro Estrugo <ramiro@eazel.com>
+*/
+
+#pragma once
+
+#include <glib.h>
+
+G_BEGIN_DECLS
+
+typedef struct {
+ double x0, y0, x1, y1;
+} EelDRect;
+
+typedef struct {
+ /*< public >*/
+ int x0, y0, x1, y1;
+} EelIRect;
+
+extern const EelDRect eel_drect_empty;
+extern const EelIRect eel_irect_empty;
+
+void eel_irect_union (EelIRect *dest,
+ const EelIRect *src1,
+ const EelIRect *src2);
+gboolean eel_irect_equal (EelIRect rectangle_a,
+ EelIRect rectangle_b);
+gboolean eel_irect_hits_irect (EelIRect rectangle_a,
+ EelIRect rectangle_b);
+EelIRect eel_irect_offset_by (EelIRect rectangle,
+ int x,
+ int y);
+EelIRect eel_irect_scale_by (EelIRect rectangle,
+ double scale);
+int eel_irect_get_width (EelIRect rectangle);
+int eel_irect_get_height (EelIRect rectangle);
+
+void eel_drect_union (EelDRect *dest,
+ const EelDRect *src1,
+ const EelDRect *src2);
+
+G_END_DECLS \ No newline at end of file
diff --git a/eel/eel-canvas.c b/eel/eel-canvas.c
new file mode 100644
index 0000000..de3902f
--- /dev/null
+++ b/eel/eel-canvas.c
@@ -0,0 +1,4149 @@
+/*
+ * Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation
+ * All rights reserved.
+ *
+ * This file is part of the Gnome Library.
+ *
+ * The Gnome Library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Gnome Library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with the Gnome Library; see the file COPYING.LIB. If not,
+ * see <http://www.gnu.org/licenses/>.
+ */
+/*
+ * @NOTATION@
+ */
+/*
+ * EelCanvas widget - Tk-like canvas widget for Gnome
+ *
+ * EelCanvas is basically a port of the Tk toolkit's most excellent canvas widget. Tk is
+ * copyrighted by the Regents of the University of California, Sun Microsystems, and other parties.
+ *
+ *
+ * Authors: Federico Mena <federico@nuclecu.unam.mx>
+ * Raph Levien <raph@gimp.org>
+ */
+
+/*
+ * TO-DO list for the canvas:
+ *
+ * - Allow to specify whether EelCanvasImage sizes are in units or pixels (scale or don't scale).
+ *
+ * - GC put functions for items.
+ *
+ * - Widget item (finish it).
+ *
+ * - GList *eel_canvas_gimme_all_items_contained_in_this_area (EelCanvas *canvas, Rectangle area);
+ *
+ * - Retrofit all the primitive items with microtile support.
+ *
+ * - Curve support for line item.
+ *
+ * - Arc item (Havoc has it; to be integrated in EelCanvasEllipse).
+ *
+ * - Sane font handling API.
+ *
+ * - Get_arg methods for items:
+ * - How to fetch the outline width and know whether it is in pixels or units?
+ */
+
+#include <config.h>
+
+#include <math.h>
+#include <string.h>
+#include <stdio.h>
+#include <gtk/gtk.h>
+#include <glib/gi18n-lib.h>
+#include <cairo-gobject.h>
+#include "eel-canvas.h"
+
+static void eel_canvas_request_update (EelCanvas *canvas);
+static void group_add (EelCanvasGroup *group,
+ EelCanvasItem *item);
+static void group_remove (EelCanvasGroup *group,
+ EelCanvasItem *item);
+static void redraw_and_repick_if_mapped (EelCanvasItem *item);
+
+/*** EelCanvasItem ***/
+
+/* Some convenience stuff */
+#define GCI_UPDATE_MASK (EEL_CANVAS_UPDATE_REQUESTED | EEL_CANVAS_UPDATE_DEEP)
+
+enum
+{
+ ITEM_PROP_0,
+ ITEM_PROP_VISIBLE
+};
+
+enum
+{
+ ITEM_DESTROY,
+ ITEM_EVENT,
+ ITEM_LAST_SIGNAL
+};
+
+static void eel_canvas_item_class_init (EelCanvasItemClass *klass);
+static void eel_canvas_item_init (EelCanvasItem *item);
+static int emit_event (EelCanvas *canvas,
+ GdkEvent *event);
+
+static guint item_signals[ITEM_LAST_SIGNAL];
+
+static GObjectClass *item_parent_class;
+
+static gpointer accessible_item_parent_class;
+static gpointer accessible_parent_class;
+
+
+/**
+ * eel_canvas_item_get_type:
+ *
+ * Registers the &EelCanvasItem class if necessary, and returns the type ID
+ * associated to it.
+ *
+ * Return value: The type ID of the &EelCanvasItem class.
+ **/
+GType
+eel_canvas_item_get_type (void)
+{
+ static GType canvas_item_type = 0;
+
+ if (!canvas_item_type)
+ {
+ static const GTypeInfo canvas_item_info =
+ {
+ sizeof (EelCanvasItemClass),
+ (GBaseInitFunc) NULL,
+ (GBaseFinalizeFunc) NULL,
+ (GClassInitFunc) eel_canvas_item_class_init,
+ NULL, /* class_finalize */
+ NULL, /* class_data */
+ sizeof (EelCanvasItem),
+ 0, /* n_preallocs */
+ (GInstanceInitFunc) eel_canvas_item_init
+ };
+
+ canvas_item_type = g_type_register_static (G_TYPE_INITIALLY_UNOWNED,
+ "EelCanvasItem",
+ &canvas_item_info,
+ 0);
+ }
+
+ return canvas_item_type;
+}
+
+/* Object initialization function for EelCanvasItem */
+static void
+eel_canvas_item_init (EelCanvasItem *item)
+{
+ item->flags |= EEL_CANVAS_ITEM_VISIBLE;
+}
+
+/* Performs post-creation operations on a canvas item (adding it to its parent
+ * group, etc.)
+ */
+static void
+item_post_create_setup (EelCanvasItem *item)
+{
+ group_add (EEL_CANVAS_GROUP (item->parent), item);
+
+ redraw_and_repick_if_mapped (item);
+}
+
+/**
+ * eel_canvas_item_new:
+ * @parent: The parent group for the new item.
+ * @type: The object type of the item.
+ * @first_arg_name: A list of object argument name/value pairs, NULL-terminated,
+ * used to configure the item. For example, "fill_color", "black",
+ * "width_units", 5.0, NULL.
+ * @Varargs:
+ *
+ * Creates a new canvas item with @parent as its parent group. The item is
+ * created at the top of its parent's stack, and starts up as visible. The item
+ * is of the specified @type, for example, it can be
+ * eel_canvas_rect_get_type(). The list of object arguments/value pairs is
+ * used to configure the item.
+ *
+ * Return value: The newly-created item.
+ **/
+EelCanvasItem *
+eel_canvas_item_new (EelCanvasGroup *parent,
+ GType type,
+ const gchar *first_arg_name,
+ ...)
+{
+ EelCanvasItem *item;
+ va_list args;
+
+ g_return_val_if_fail (EEL_IS_CANVAS_GROUP (parent), NULL);
+ g_return_val_if_fail (g_type_is_a (type, eel_canvas_item_get_type ()), NULL);
+
+ item = EEL_CANVAS_ITEM (g_object_new (type, NULL));
+
+ item->parent = EEL_CANVAS_ITEM (parent);
+ item->canvas = item->parent->canvas;
+
+ va_start (args, first_arg_name);
+ g_object_set_valist (G_OBJECT (item), first_arg_name, args);
+ va_end (args);
+
+ item_post_create_setup (item);
+
+ return item;
+}
+
+/* Set_property handler for canvas items */
+static void
+eel_canvas_item_set_property (GObject *gobject,
+ guint param_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ EelCanvasItem *item;
+
+ g_return_if_fail (EEL_IS_CANVAS_ITEM (gobject));
+
+ item = EEL_CANVAS_ITEM (gobject);
+
+ switch (param_id)
+ {
+ case ITEM_PROP_VISIBLE:
+ {
+ if (g_value_get_boolean (value))
+ {
+ eel_canvas_item_show (item);
+ }
+ else
+ {
+ eel_canvas_item_hide (item);
+ }
+ }
+ break;
+
+ default:
+ {
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, param_id, pspec);
+ }
+ break;
+ }
+}
+
+/* Get_property handler for canvas items */
+static void
+eel_canvas_item_get_property (GObject *gobject,
+ guint param_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ EelCanvasItem *item;
+
+ g_return_if_fail (EEL_IS_CANVAS_ITEM (gobject));
+
+ item = EEL_CANVAS_ITEM (gobject);
+
+ switch (param_id)
+ {
+ case ITEM_PROP_VISIBLE:
+ {
+ g_value_set_boolean (value, item->flags & EEL_CANVAS_ITEM_VISIBLE);
+ }
+ break;
+
+ default:
+ {
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, param_id, pspec);
+ }
+ break;
+ }
+}
+
+static void
+redraw_and_repick_if_mapped (EelCanvasItem *item)
+{
+ if (item->flags & EEL_CANVAS_ITEM_MAPPED)
+ {
+ eel_canvas_item_request_redraw (item);
+ item->canvas->need_repick = TRUE;
+ }
+}
+
+/* Dispose handler for canvas items */
+static void
+eel_canvas_item_dispose (GObject *object)
+{
+ EelCanvasItem *item;
+
+ g_return_if_fail (EEL_IS_CANVAS_ITEM (object));
+
+ item = EEL_CANVAS_ITEM (object);
+
+ if (item->canvas)
+ {
+ eel_canvas_item_request_redraw (item);
+
+ /* Make the canvas forget about us */
+
+ if (item == item->canvas->current_item)
+ {
+ item->canvas->current_item = NULL;
+ item->canvas->need_repick = TRUE;
+ }
+
+ if (item == item->canvas->new_current_item)
+ {
+ item->canvas->new_current_item = NULL;
+ item->canvas->need_repick = TRUE;
+ }
+
+ eel_canvas_item_ungrab (item);
+
+ if (item == item->canvas->focused_item)
+ {
+ item->canvas->focused_item = NULL;
+ }
+
+ /* Normal destroy stuff */
+
+ if (item->flags & EEL_CANVAS_ITEM_MAPPED)
+ {
+ (*EEL_CANVAS_ITEM_GET_CLASS (item)->unmap)(item);
+ }
+
+ if (item->flags & EEL_CANVAS_ITEM_REALIZED)
+ {
+ (*EEL_CANVAS_ITEM_GET_CLASS (item)->unrealize)(item);
+ }
+
+ if (item->parent)
+ {
+ group_remove (EEL_CANVAS_GROUP (item->parent), item);
+ }
+
+ item->canvas = NULL;
+ }
+
+ g_object_set_data (object, "in-destruction", GINT_TO_POINTER (1));
+ g_signal_emit (object, item_signals[ITEM_DESTROY], 0);
+
+ g_object_set_data (object, "in-destruction", NULL);
+
+ G_OBJECT_CLASS (item_parent_class)->dispose (object);
+}
+
+void
+eel_canvas_item_destroy (EelCanvasItem *item)
+{
+ if (g_object_get_data (G_OBJECT (item), "in-destruction") == NULL)
+ {
+ g_object_run_dispose (G_OBJECT (item));
+ }
+}
+
+/* Realize handler for canvas items */
+static void
+eel_canvas_item_realize (EelCanvasItem *item)
+{
+ if (item->parent && !(item->parent->flags & EEL_CANVAS_ITEM_REALIZED))
+ {
+ (*EEL_CANVAS_ITEM_GET_CLASS (item->parent)->realize)(item->parent);
+ }
+
+ if (item->parent == NULL && !gtk_widget_get_realized (GTK_WIDGET (item->canvas)))
+ {
+ gtk_widget_realize (GTK_WIDGET (item->canvas));
+ }
+
+ item->flags |= EEL_CANVAS_ITEM_REALIZED;
+
+ eel_canvas_item_request_update (item);
+}
+
+/* Unrealize handler for canvas items */
+static void
+eel_canvas_item_unrealize (EelCanvasItem *item)
+{
+ if (item->flags & EEL_CANVAS_ITEM_MAPPED)
+ {
+ (*EEL_CANVAS_ITEM_GET_CLASS (item)->unmap)(item);
+ }
+
+ item->flags &= ~(EEL_CANVAS_ITEM_REALIZED);
+}
+
+/* Map handler for canvas items */
+static void
+eel_canvas_item_map (EelCanvasItem *item)
+{
+ item->flags |= EEL_CANVAS_ITEM_MAPPED;
+}
+
+/* Unmap handler for canvas items */
+static void
+eel_canvas_item_unmap (EelCanvasItem *item)
+{
+ item->flags &= ~(EEL_CANVAS_ITEM_MAPPED);
+}
+
+/* Update handler for canvas items */
+static void
+eel_canvas_item_update (EelCanvasItem *item,
+ double i2w_dx,
+ double i2w_dy,
+ int flags)
+{
+ item->flags &= ~(EEL_CANVAS_ITEM_NEED_UPDATE);
+ item->flags &= ~(EEL_CANVAS_ITEM_NEED_DEEP_UPDATE);
+}
+
+/*
+ * This routine invokes the update method of the item
+ * Please notice, that we take parent to canvas pixel matrix as argument
+ * unlike virtual method ::update, whose argument is item 2 canvas pixel
+ * matrix
+ *
+ * I will try to force somewhat meaningful naming for affines (Lauris)
+ * General naming rule is FROM2TO, where FROM and TO are abbreviations
+ * So p2cpx is Parent2CanvasPixel and i2cpx is Item2CanvasPixel
+ * I hope that this helps to keep track of what really happens
+ *
+ */
+
+static void
+eel_canvas_item_invoke_update (EelCanvasItem *item,
+ double i2w_dx,
+ double i2w_dy,
+ int flags)
+{
+ int child_flags;
+
+ child_flags = flags;
+
+ /* apply object flags to child flags */
+ child_flags &= ~EEL_CANVAS_UPDATE_REQUESTED;
+
+ if (item->flags & EEL_CANVAS_ITEM_NEED_UPDATE)
+ {
+ child_flags |= EEL_CANVAS_UPDATE_REQUESTED;
+ }
+
+ if (item->flags & EEL_CANVAS_ITEM_NEED_DEEP_UPDATE)
+ {
+ child_flags |= EEL_CANVAS_UPDATE_DEEP;
+ }
+
+ if (child_flags & GCI_UPDATE_MASK)
+ {
+ if (EEL_CANVAS_ITEM_GET_CLASS (item)->update)
+ {
+ EEL_CANVAS_ITEM_GET_CLASS (item)->update (item, i2w_dx, i2w_dy, child_flags);
+ }
+ }
+
+ /* If this fail you probably forgot to chain up to
+ * EelCanvasItem::update from a derived class */
+ g_return_if_fail (!(item->flags & EEL_CANVAS_ITEM_NEED_UPDATE));
+}
+
+/*
+ * This routine invokes the point method of the item.
+ * The arguments x, y should be in the parent item local coordinates.
+ */
+
+static double
+eel_canvas_item_invoke_point (EelCanvasItem *item,
+ double x,
+ double y,
+ int cx,
+ int cy,
+ EelCanvasItem **actual_item)
+{
+ /* Calculate x & y in item local coordinates */
+
+ if (EEL_CANVAS_ITEM_GET_CLASS (item)->point)
+ {
+ return EEL_CANVAS_ITEM_GET_CLASS (item)->point (item, x, y, cx, cy, actual_item);
+ }
+
+ return 1e18;
+}
+
+/**
+ * eel_canvas_item_set:
+ * @item: A canvas item.
+ * @first_arg_name: The list of object argument name/value pairs used to configure the item.
+ * @Varargs:
+ *
+ * Configures a canvas item. The arguments in the item are set to the specified
+ * values, and the item is repainted as appropriate.
+ **/
+void
+eel_canvas_item_set (EelCanvasItem *item,
+ const gchar *first_arg_name,
+ ...)
+{
+ va_list args;
+
+ va_start (args, first_arg_name);
+ g_object_set_valist (G_OBJECT (item), first_arg_name, args);
+ va_end (args);
+
+ item->canvas->need_repick = TRUE;
+}
+
+/**
+ * eel_canvas_item_move:
+ * @item: A canvas item.
+ * @dx: Horizontal offset.
+ * @dy: Vertical offset.
+ *
+ * Moves a canvas item by creating an affine transformation matrix for
+ * translation by using the specified values. This happens in item
+ * local coordinate system, so if you have nontrivial transform, it
+ * most probably does not do, what you want.
+ **/
+void
+eel_canvas_item_move (EelCanvasItem *item,
+ double dx,
+ double dy)
+{
+ g_return_if_fail (item != NULL);
+ g_return_if_fail (EEL_IS_CANVAS_ITEM (item));
+
+ if (!EEL_CANVAS_ITEM_GET_CLASS (item)->translate)
+ {
+ g_warning ("Item type %s does not implement translate method.\n",
+ g_type_name (G_OBJECT_TYPE (item)));
+ return;
+ }
+
+ (*EEL_CANVAS_ITEM_GET_CLASS (item)->translate)(item, dx, dy);
+
+ if (item->flags & EEL_CANVAS_ITEM_MAPPED)
+ {
+ item->canvas->need_repick = TRUE;
+ }
+
+ if (!(item->flags & EEL_CANVAS_ITEM_NEED_DEEP_UPDATE))
+ {
+ item->flags |= EEL_CANVAS_ITEM_NEED_DEEP_UPDATE;
+ if (item->parent != NULL)
+ {
+ eel_canvas_item_request_update (item->parent);
+ }
+ else
+ {
+ eel_canvas_request_update (item->canvas);
+ }
+ }
+}
+
+static void
+eel_canvas_queue_resize (EelCanvas *canvas)
+{
+ if (gtk_widget_is_drawable (GTK_WIDGET (canvas)))
+ {
+ gtk_widget_queue_resize (GTK_WIDGET (canvas));
+ }
+}
+
+/* Convenience function to reorder items in a group's child list. This puts the
+ * specified link after the "before" link. Returns TRUE if the list was changed.
+ */
+static gboolean
+put_item_after (GList *link,
+ GList *before)
+{
+ EelCanvasGroup *parent;
+
+ if (link == before)
+ {
+ return FALSE;
+ }
+
+ parent = EEL_CANVAS_GROUP (EEL_CANVAS_ITEM (link->data)->parent);
+
+ if (before == NULL)
+ {
+ if (link == parent->item_list)
+ {
+ return FALSE;
+ }
+
+ link->prev->next = link->next;
+
+ if (link->next)
+ {
+ link->next->prev = link->prev;
+ }
+ else
+ {
+ parent->item_list_end = link->prev;
+ }
+
+ link->prev = before;
+ link->next = parent->item_list;
+ link->next->prev = link;
+ parent->item_list = link;
+ }
+ else
+ {
+ if ((link == parent->item_list_end) && (before == parent->item_list_end->prev))
+ {
+ return FALSE;
+ }
+
+ if (link->next)
+ {
+ link->next->prev = link->prev;
+ }
+
+ if (link->prev)
+ {
+ link->prev->next = link->next;
+ }
+ else
+ {
+ parent->item_list = link->next;
+ parent->item_list->prev = NULL;
+ }
+
+ link->prev = before;
+ link->next = before->next;
+
+ link->prev->next = link;
+
+ if (link->next)
+ {
+ link->next->prev = link;
+ }
+ else
+ {
+ parent->item_list_end = link;
+ }
+ }
+ return TRUE;
+}
+
+
+/**
+ * eel_canvas_item_raise:
+ * @item: A canvas item.
+ * @positions: Number of steps to raise the item.
+ *
+ * Raises the item in its parent's stack by the specified number of positions.
+ * If the number of positions is greater than the distance to the top of the
+ * stack, then the item is put at the top.
+ **/
+void
+eel_canvas_item_raise (EelCanvasItem *item,
+ int positions)
+{
+ GList *link, *before;
+ EelCanvasGroup *parent;
+
+ g_return_if_fail (EEL_IS_CANVAS_ITEM (item));
+ g_return_if_fail (positions >= 0);
+
+ if (!item->parent || positions == 0)
+ {
+ return;
+ }
+
+ parent = EEL_CANVAS_GROUP (item->parent);
+ link = g_list_find (parent->item_list, item);
+ g_assert (link != NULL);
+
+ for (before = link; positions && before; positions--)
+ {
+ before = before->next;
+ }
+
+ if (!before)
+ {
+ before = parent->item_list_end;
+ }
+
+ if (put_item_after (link, before))
+ {
+ redraw_and_repick_if_mapped (item);
+ }
+}
+
+
+/**
+ * eel_canvas_item_lower:
+ * @item: A canvas item.
+ * @positions: Number of steps to lower the item.
+ *
+ * Lowers the item in its parent's stack by the specified number of positions.
+ * If the number of positions is greater than the distance to the bottom of the
+ * stack, then the item is put at the bottom.
+ **/
+void
+eel_canvas_item_lower (EelCanvasItem *item,
+ int positions)
+{
+ GList *link, *before;
+ EelCanvasGroup *parent;
+
+ g_return_if_fail (EEL_IS_CANVAS_ITEM (item));
+ g_return_if_fail (positions >= 1);
+
+ if (!item->parent)
+ {
+ return;
+ }
+
+ parent = EEL_CANVAS_GROUP (item->parent);
+ link = g_list_find (parent->item_list, item);
+ g_assert (link != NULL);
+
+ if (link->prev)
+ {
+ for (before = link->prev; positions && before; positions--)
+ {
+ before = before->prev;
+ }
+ }
+ else
+ {
+ before = NULL;
+ }
+
+ if (put_item_after (link, before))
+ {
+ redraw_and_repick_if_mapped (item);
+ }
+}
+
+
+/**
+ * eel_canvas_item_raise_to_top:
+ * @item: A canvas item.
+ *
+ * Raises an item to the top of its parent's stack.
+ **/
+void
+eel_canvas_item_raise_to_top (EelCanvasItem *item)
+{
+ GList *link;
+ EelCanvasGroup *parent;
+
+ g_return_if_fail (EEL_IS_CANVAS_ITEM (item));
+
+ if (!item->parent)
+ {
+ return;
+ }
+
+ parent = EEL_CANVAS_GROUP (item->parent);
+ link = g_list_find (parent->item_list, item);
+ g_assert (link != NULL);
+
+ if (put_item_after (link, parent->item_list_end))
+ {
+ redraw_and_repick_if_mapped (item);
+ }
+}
+
+
+/**
+ * eel_canvas_item_lower_to_bottom:
+ * @item: A canvas item.
+ *
+ * Lowers an item to the bottom of its parent's stack.
+ **/
+void
+eel_canvas_item_lower_to_bottom (EelCanvasItem *item)
+{
+ GList *link;
+ EelCanvasGroup *parent;
+
+ g_return_if_fail (EEL_IS_CANVAS_ITEM (item));
+
+ if (!item->parent)
+ {
+ return;
+ }
+
+ parent = EEL_CANVAS_GROUP (item->parent);
+ link = g_list_find (parent->item_list, item);
+ g_assert (link != NULL);
+
+ if (put_item_after (link, NULL))
+ {
+ redraw_and_repick_if_mapped (item);
+ }
+}
+
+/**
+ * eel_canvas_item_send_behind:
+ * @item: A canvas item.
+ * @behind_item: The canvas item to put item behind, or NULL
+ *
+ * Moves item to a in the position in the stacking order so that
+ * it is placed immediately below behind_item, or at the top if
+ * behind_item is NULL.
+ **/
+void
+eel_canvas_item_send_behind (EelCanvasItem *item,
+ EelCanvasItem *behind_item)
+{
+ GList *item_list;
+ int item_position, behind_position;
+
+ g_return_if_fail (EEL_IS_CANVAS_ITEM (item));
+
+ if (behind_item == NULL)
+ {
+ eel_canvas_item_raise_to_top (item);
+ return;
+ }
+
+ g_return_if_fail (EEL_IS_CANVAS_ITEM (behind_item));
+ g_return_if_fail (item->parent == behind_item->parent);
+
+ item_list = EEL_CANVAS_GROUP (item->parent)->item_list;
+
+ item_position = g_list_index (item_list, item);
+ g_assert (item_position != -1);
+ behind_position = g_list_index (item_list, behind_item);
+ g_assert (behind_position != -1);
+ g_assert (item_position != behind_position);
+
+ if (item_position == behind_position - 1)
+ {
+ return;
+ }
+
+ if (item_position < behind_position)
+ {
+ eel_canvas_item_raise (item, (behind_position - 1) - item_position);
+ }
+ else
+ {
+ eel_canvas_item_lower (item, item_position - behind_position);
+ }
+}
+
+/**
+ * eel_canvas_item_show:
+ * @item: A canvas item.
+ *
+ * Shows a canvas item. If the item was already shown, then no action is taken.
+ **/
+void
+eel_canvas_item_show (EelCanvasItem *item)
+{
+ g_return_if_fail (EEL_IS_CANVAS_ITEM (item));
+
+ if (!(item->flags & EEL_CANVAS_ITEM_VISIBLE))
+ {
+ item->flags |= EEL_CANVAS_ITEM_VISIBLE;
+
+ if (!(item->flags & EEL_CANVAS_ITEM_REALIZED))
+ {
+ (*EEL_CANVAS_ITEM_GET_CLASS (item)->realize)(item);
+ }
+
+ if (item->parent != NULL)
+ {
+ if (!(item->flags & EEL_CANVAS_ITEM_MAPPED) &&
+ item->parent->flags & EEL_CANVAS_ITEM_MAPPED)
+ {
+ (*EEL_CANVAS_ITEM_GET_CLASS (item)->map)(item);
+ }
+ }
+ else
+ {
+ if (!(item->flags & EEL_CANVAS_ITEM_MAPPED) &&
+ gtk_widget_get_mapped (GTK_WIDGET (item->canvas)))
+ {
+ (*EEL_CANVAS_ITEM_GET_CLASS (item)->map)(item);
+ }
+ }
+
+ redraw_and_repick_if_mapped (item);
+ eel_canvas_queue_resize (item->canvas);
+ }
+}
+
+
+/**
+ * eel_canvas_item_hide:
+ * @item: A canvas item.
+ *
+ * Hides a canvas item. If the item was already hidden, then no action is
+ * taken.
+ **/
+void
+eel_canvas_item_hide (EelCanvasItem *item)
+{
+ g_return_if_fail (EEL_IS_CANVAS_ITEM (item));
+
+ if (item->flags & EEL_CANVAS_ITEM_VISIBLE)
+ {
+ item->flags &= ~EEL_CANVAS_ITEM_VISIBLE;
+
+ redraw_and_repick_if_mapped (item);
+
+ if (item->flags & EEL_CANVAS_ITEM_MAPPED)
+ {
+ (*EEL_CANVAS_ITEM_GET_CLASS (item)->unmap)(item);
+ }
+
+ eel_canvas_queue_resize (item->canvas);
+
+ /* No need to unrealize when we just want to hide */
+ }
+}
+
+
+/*
+ * Prepare the window for grabbing, i.e. show it.
+ */
+static void
+seat_grab_prepare_window (GdkSeat *seat,
+ GdkWindow *window,
+ gpointer user_data)
+{
+ gdk_window_show (window);
+}
+
+/**
+ * eel_canvas_item_grab:
+ * @item: A canvas item.
+ * @event_mask: Mask of events that will be sent to this item.
+ * @cursor: If non-NULL, the cursor that will be used while the grab is active.
+ * @event: The event, triggering the grab, if any.
+ *
+ * Specifies that all events that match the specified event mask should be sent
+ * to the specified item, and also grabs the seat by calling gdk_seat_grab().
+ * If @cursor is not NULL, then that cursor is used while the grab is active.
+ *
+ * Return value: If an item was already grabbed, it returns %GDK_GRAB_ALREADY_GRABBED. If
+ * the specified item was hidden by calling eel_canvas_item_hide(), then it
+ * returns %GDK_GRAB_NOT_VIEWABLE. Else, it returns the result of calling
+ * gdk_seat_grab().
+ **/
+GdkGrabStatus
+eel_canvas_item_grab (EelCanvasItem *item,
+ GdkEventMask event_mask,
+ GdkCursor *cursor,
+ const GdkEvent *event)
+{
+ GdkGrabStatus retval;
+ GdkDisplay *display;
+ GdkSeat *seat;
+
+ g_return_val_if_fail (EEL_IS_CANVAS_ITEM (item), GDK_GRAB_NOT_VIEWABLE);
+ g_return_val_if_fail (gtk_widget_get_mapped (GTK_WIDGET (item->canvas)),
+ GDK_GRAB_NOT_VIEWABLE);
+
+ if (item->canvas->grabbed_item)
+ {
+ return GDK_GRAB_ALREADY_GRABBED;
+ }
+
+ if (!(item->flags & EEL_CANVAS_ITEM_MAPPED))
+ {
+ return GDK_GRAB_NOT_VIEWABLE;
+ }
+
+ display = gtk_widget_get_display (GTK_WIDGET (item->canvas));
+ seat = gdk_display_get_default_seat (display);
+
+ retval = gdk_seat_grab (seat,
+ gtk_layout_get_bin_window (GTK_LAYOUT (item->canvas)),
+ GDK_SEAT_CAPABILITY_ALL_POINTING,
+ FALSE,
+ cursor,
+ event,
+ seat_grab_prepare_window,
+ NULL);
+
+ if (retval != GDK_GRAB_SUCCESS)
+ {
+ return retval;
+ }
+
+ item->canvas->grabbed_item = item;
+ item->canvas->grabbed_event_mask = event_mask;
+ item->canvas->current_item = item; /* So that events go to the grabbed item */
+
+ return retval;
+}
+
+
+/**
+ * eel_canvas_item_ungrab:
+ * @item: A canvas item that holds a grab.
+ *
+ * Ungrabs the item, which must have been grabbed in the canvas, and ungrabs the
+ * seat.
+ **/
+void
+eel_canvas_item_ungrab (EelCanvasItem *item)
+{
+ GdkDisplay *display;
+ GdkSeat *seat;
+
+ g_return_if_fail (EEL_IS_CANVAS_ITEM (item));
+
+ if (item->canvas->grabbed_item != item)
+ {
+ return;
+ }
+
+ display = gtk_widget_get_display (GTK_WIDGET (item->canvas));
+ seat = gdk_display_get_default_seat (display);
+
+ item->canvas->grabbed_item = NULL;
+ gdk_seat_ungrab (seat);
+}
+
+/**
+ * eel_canvas_item_i2w:
+ * @item: A canvas item.
+ * @x: X coordinate to convert (input/output value).
+ * @y: Y coordinate to convert (input/output value).
+ *
+ * Converts a coordinate pair from item-relative coordinates to world
+ * coordinates.
+ **/
+void
+eel_canvas_item_i2w (EelCanvasItem *item,
+ double *x,
+ double *y)
+{
+ g_return_if_fail (EEL_IS_CANVAS_ITEM (item));
+ g_return_if_fail (x != NULL);
+ g_return_if_fail (y != NULL);
+
+ item = item->parent;
+ while (item)
+ {
+ if (EEL_IS_CANVAS_GROUP (item))
+ {
+ *x += EEL_CANVAS_GROUP (item)->xpos;
+ *y += EEL_CANVAS_GROUP (item)->ypos;
+ }
+
+ item = item->parent;
+ }
+}
+
+/* Returns whether the item is an inferior of or is equal to the parent. */
+static int
+is_descendant (EelCanvasItem *item,
+ EelCanvasItem *parent)
+{
+ for (; item; item = item->parent)
+ {
+ if (item == parent)
+ {
+ return TRUE;
+ }
+ }
+
+ return FALSE;
+}
+
+/**
+ * eel_canvas_item_grab_focus:
+ * @item: A canvas item.
+ *
+ * Makes the specified item take the keyboard focus, so all keyboard events will
+ * be sent to it. If the canvas widget itself did not have the focus, it grabs
+ * it as well.
+ **/
+static void
+eel_canvas_item_grab_focus (EelCanvasItem *item)
+{
+ EelCanvasItem *focused_item;
+ GdkEvent ev;
+
+ g_return_if_fail (EEL_IS_CANVAS_ITEM (item));
+ g_return_if_fail (gtk_widget_get_can_focus (GTK_WIDGET (item->canvas)));
+
+ focused_item = item->canvas->focused_item;
+
+ if (focused_item)
+ {
+ ev.focus_change.type = GDK_FOCUS_CHANGE;
+ ev.focus_change.window = gtk_layout_get_bin_window (GTK_LAYOUT (item->canvas));
+ ev.focus_change.send_event = FALSE;
+ ev.focus_change.in = FALSE;
+
+ emit_event (item->canvas, &ev);
+ }
+
+ item->canvas->focused_item = item;
+ gtk_widget_grab_focus (GTK_WIDGET (item->canvas));
+
+ if (focused_item)
+ {
+ ev.focus_change.type = GDK_FOCUS_CHANGE;
+ ev.focus_change.window = gtk_layout_get_bin_window (GTK_LAYOUT (item->canvas));
+ ev.focus_change.send_event = FALSE;
+ ev.focus_change.in = TRUE;
+
+ emit_event (item->canvas, &ev);
+ }
+}
+
+
+/**
+ * eel_canvas_item_get_bounds:
+ * @item: A canvas item.
+ * @x1: Leftmost edge of the bounding box (return value).
+ * @y1: Upper edge of the bounding box (return value).
+ * @x2: Rightmost edge of the bounding box (return value).
+ * @y2: Lower edge of the bounding box (return value).
+ *
+ * Queries the bounding box of a canvas item. The bounds are returned in the
+ * coordinate system of the item's parent.
+ **/
+void
+eel_canvas_item_get_bounds (EelCanvasItem *item,
+ double *x1,
+ double *y1,
+ double *x2,
+ double *y2)
+{
+ double tx1, ty1, tx2, ty2;
+
+ g_return_if_fail (EEL_IS_CANVAS_ITEM (item));
+
+ tx1 = ty1 = tx2 = ty2 = 0.0;
+
+ /* Get the item's bounds in its coordinate system */
+
+ if (EEL_CANVAS_ITEM_GET_CLASS (item)->bounds)
+ {
+ (*EEL_CANVAS_ITEM_GET_CLASS (item)->bounds)(item, &tx1, &ty1, &tx2, &ty2);
+ }
+
+ /* Return the values */
+
+ if (x1)
+ {
+ *x1 = tx1;
+ }
+
+ if (y1)
+ {
+ *y1 = ty1;
+ }
+
+ if (x2)
+ {
+ *x2 = tx2;
+ }
+
+ if (y2)
+ {
+ *y2 = ty2;
+ }
+}
+
+
+/**
+ * eel_canvas_item_request_update
+ * @item: A canvas item.
+ *
+ * To be used only by item implementations. Requests that the canvas queue an
+ * update for the specified item.
+ **/
+void
+eel_canvas_item_request_update (EelCanvasItem *item)
+{
+ if (NULL == item->canvas)
+ {
+ return;
+ }
+
+ g_return_if_fail (!item->canvas->doing_update);
+
+ if (item->flags & EEL_CANVAS_ITEM_NEED_UPDATE)
+ {
+ return;
+ }
+
+ item->flags |= EEL_CANVAS_ITEM_NEED_UPDATE;
+
+ if (item->parent != NULL)
+ {
+ /* Recurse up the tree */
+ eel_canvas_item_request_update (item->parent);
+ }
+ else
+ {
+ /* Have reached the top of the tree, make sure the update call gets scheduled. */
+ eel_canvas_request_update (item->canvas);
+ }
+}
+
+/**
+ * eel_canvas_item_request_update
+ * @item: A canvas item.
+ *
+ * Convenience function that informs a canvas that the specified item needs
+ * to be repainted. To be used by item implementations
+ **/
+void
+eel_canvas_item_request_redraw (EelCanvasItem *item)
+{
+ if (item->flags & EEL_CANVAS_ITEM_MAPPED)
+ {
+ eel_canvas_request_redraw (item->canvas,
+ item->x1, item->y1,
+ item->x2 + 1, item->y2 + 1);
+ }
+}
+
+
+
+/*** EelCanvasGroup ***/
+
+
+enum
+{
+ GROUP_PROP_0,
+ GROUP_PROP_X,
+ GROUP_PROP_Y
+};
+
+
+static void eel_canvas_group_class_init (EelCanvasGroupClass *klass);
+static void eel_canvas_group_init (EelCanvasGroup *group);
+static void eel_canvas_group_set_property (GObject *object,
+ guint param_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void eel_canvas_group_get_property (GObject *object,
+ guint param_id,
+ GValue *value,
+ GParamSpec *pspec);
+
+static void eel_canvas_group_destroy (EelCanvasItem *object);
+
+static void eel_canvas_group_update (EelCanvasItem *item,
+ double i2w_dx,
+ double i2w_dy,
+ int flags);
+static void eel_canvas_group_unrealize (EelCanvasItem *item);
+static void eel_canvas_group_map (EelCanvasItem *item);
+static void eel_canvas_group_unmap (EelCanvasItem *item);
+static void eel_canvas_group_draw (EelCanvasItem *item,
+ cairo_t *cr,
+ cairo_region_t *region);
+static double eel_canvas_group_point (EelCanvasItem *item,
+ double x,
+ double y,
+ int cx,
+ int cy,
+ EelCanvasItem **actual_item);
+static void eel_canvas_group_translate (EelCanvasItem *item,
+ double dx,
+ double dy);
+static void eel_canvas_group_bounds (EelCanvasItem *item,
+ double *x1,
+ double *y1,
+ double *x2,
+ double *y2);
+
+
+static EelCanvasItemClass *group_parent_class;
+
+
+/**
+ * eel_canvas_group_get_type:
+ *
+ * Registers the &EelCanvasGroup class if necessary, and returns the type ID
+ * associated to it.
+ *
+ * Return value: The type ID of the &EelCanvasGroup class.
+ **/
+GType
+eel_canvas_group_get_type (void)
+{
+ static GType group_type = 0;
+
+ if (!group_type)
+ {
+ static const GTypeInfo group_info =
+ {
+ sizeof (EelCanvasGroupClass),
+ (GBaseInitFunc) NULL,
+ (GBaseFinalizeFunc) NULL,
+ (GClassInitFunc) eel_canvas_group_class_init,
+ NULL, /* class_finalize */
+ NULL, /* class_data */
+ sizeof (EelCanvasGroup),
+ 0, /* n_preallocs */
+ (GInstanceInitFunc) eel_canvas_group_init
+ };
+
+ group_type = g_type_register_static (eel_canvas_item_get_type (),
+ "EelCanvasGroup",
+ &group_info,
+ 0);
+ }
+
+ return group_type;
+}
+
+/* Class initialization function for EelCanvasGroupClass */
+static void
+eel_canvas_group_class_init (EelCanvasGroupClass *klass)
+{
+ GObjectClass *gobject_class;
+ EelCanvasItemClass *item_class;
+
+ gobject_class = (GObjectClass *) klass;
+ item_class = (EelCanvasItemClass *) klass;
+
+ group_parent_class = g_type_class_peek_parent (klass);
+
+ gobject_class->set_property = eel_canvas_group_set_property;
+ gobject_class->get_property = eel_canvas_group_get_property;
+
+ g_object_class_install_property
+ (gobject_class, GROUP_PROP_X,
+ g_param_spec_double ("x",
+ _("X"),
+ _("X"),
+ -G_MAXDOUBLE, G_MAXDOUBLE, 0.0,
+ G_PARAM_READWRITE));
+ g_object_class_install_property
+ (gobject_class, GROUP_PROP_Y,
+ g_param_spec_double ("y",
+ _("Y"),
+ _("Y"),
+ -G_MAXDOUBLE, G_MAXDOUBLE, 0.0,
+ G_PARAM_READWRITE));
+
+ item_class->destroy = eel_canvas_group_destroy;
+ item_class->update = eel_canvas_group_update;
+ item_class->unrealize = eel_canvas_group_unrealize;
+ item_class->map = eel_canvas_group_map;
+ item_class->unmap = eel_canvas_group_unmap;
+ item_class->draw = eel_canvas_group_draw;
+ item_class->point = eel_canvas_group_point;
+ item_class->translate = eel_canvas_group_translate;
+ item_class->bounds = eel_canvas_group_bounds;
+}
+
+/* Object initialization function for EelCanvasGroup */
+static void
+eel_canvas_group_init (EelCanvasGroup *group)
+{
+ group->xpos = 0.0;
+ group->ypos = 0.0;
+}
+
+/* Set_property handler for canvas groups */
+static void
+eel_canvas_group_set_property (GObject *gobject,
+ guint param_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ EelCanvasItem *item;
+ EelCanvasGroup *group;
+ double old;
+ gboolean moved;
+
+ g_return_if_fail (EEL_IS_CANVAS_GROUP (gobject));
+
+ item = EEL_CANVAS_ITEM (gobject);
+ group = EEL_CANVAS_GROUP (gobject);
+
+ moved = FALSE;
+ switch (param_id)
+ {
+ case GROUP_PROP_X:
+ {
+ old = group->xpos;
+ group->xpos = g_value_get_double (value);
+ if (old != group->xpos)
+ {
+ moved = TRUE;
+ }
+ }
+ break;
+
+ case GROUP_PROP_Y:
+ {
+ old = group->ypos;
+ group->ypos = g_value_get_double (value);
+ if (old != group->ypos)
+ {
+ moved = TRUE;
+ }
+ }
+ break;
+
+ default:
+ {
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, param_id, pspec);
+ }
+ break;
+ }
+
+ if (moved)
+ {
+ item->flags |= EEL_CANVAS_ITEM_NEED_DEEP_UPDATE;
+ if (item->parent != NULL)
+ {
+ eel_canvas_item_request_update (item->parent);
+ }
+ else
+ {
+ eel_canvas_request_update (item->canvas);
+ }
+ }
+}
+
+/* Get_property handler for canvas groups */
+static void
+eel_canvas_group_get_property (GObject *gobject,
+ guint param_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ EelCanvasGroup *group;
+
+ g_return_if_fail (EEL_IS_CANVAS_GROUP (gobject));
+
+ group = EEL_CANVAS_GROUP (gobject);
+
+ switch (param_id)
+ {
+ case GROUP_PROP_X:
+ {
+ g_value_set_double (value, group->xpos);
+ }
+ break;
+
+ case GROUP_PROP_Y:
+ {
+ g_value_set_double (value, group->ypos);
+ }
+ break;
+
+ default:
+ {
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, param_id, pspec);
+ }
+ break;
+ }
+}
+
+/* Destroy handler for canvas groups */
+static void
+eel_canvas_group_destroy (EelCanvasItem *object)
+{
+ EelCanvasGroup *group;
+ EelCanvasItem *child;
+ GList *list;
+
+ g_return_if_fail (EEL_IS_CANVAS_GROUP (object));
+
+ group = EEL_CANVAS_GROUP (object);
+
+ list = group->item_list;
+ while (list)
+ {
+ child = list->data;
+ list = list->next;
+
+ eel_canvas_item_destroy (child);
+ }
+
+ if (EEL_CANVAS_ITEM_CLASS (group_parent_class)->destroy)
+ {
+ (*EEL_CANVAS_ITEM_CLASS (group_parent_class)->destroy)(object);
+ }
+}
+
+/* Update handler for canvas groups */
+static void
+eel_canvas_group_update (EelCanvasItem *item,
+ double i2w_dx,
+ double i2w_dy,
+ int flags)
+{
+ EelCanvasGroup *group;
+ GList *list;
+ EelCanvasItem *i;
+ double bbox_x0, bbox_y0, bbox_x1, bbox_y1;
+ gboolean first = TRUE;
+
+ group = EEL_CANVAS_GROUP (item);
+
+ (*group_parent_class->update)(item, i2w_dx, i2w_dy, flags);
+
+ bbox_x0 = 0;
+ bbox_y0 = 0;
+ bbox_x1 = 0;
+ bbox_y1 = 0;
+
+ for (list = group->item_list; list; list = list->next)
+ {
+ i = list->data;
+
+ eel_canvas_item_invoke_update (i, i2w_dx + group->xpos, i2w_dy + group->ypos, flags);
+
+ if (first)
+ {
+ first = FALSE;
+ bbox_x0 = i->x1;
+ bbox_y0 = i->y1;
+ bbox_x1 = i->x2;
+ bbox_y1 = i->y2;
+ }
+ else
+ {
+ bbox_x0 = MIN (bbox_x0, i->x1);
+ bbox_y0 = MIN (bbox_y0, i->y1);
+ bbox_x1 = MAX (bbox_x1, i->x2);
+ bbox_y1 = MAX (bbox_y1, i->y2);
+ }
+ }
+ item->x1 = bbox_x0;
+ item->y1 = bbox_y0;
+ item->x2 = bbox_x1;
+ item->y2 = bbox_y1;
+}
+
+/* Unrealize handler for canvas groups */
+static void
+eel_canvas_group_unrealize (EelCanvasItem *item)
+{
+ EelCanvasGroup *group;
+ GList *list;
+ EelCanvasItem *i;
+
+ group = EEL_CANVAS_GROUP (item);
+
+ /* Unmap group before children to avoid flash */
+ if (item->flags & EEL_CANVAS_ITEM_MAPPED)
+ {
+ (*EEL_CANVAS_ITEM_GET_CLASS (item)->unmap)(item);
+ }
+
+ for (list = group->item_list; list; list = list->next)
+ {
+ i = list->data;
+
+ if (i->flags & EEL_CANVAS_ITEM_REALIZED)
+ {
+ (*EEL_CANVAS_ITEM_GET_CLASS (i)->unrealize)(i);
+ }
+ }
+
+ (*group_parent_class->unrealize)(item);
+}
+
+/* Map handler for canvas groups */
+static void
+eel_canvas_group_map (EelCanvasItem *item)
+{
+ EelCanvasGroup *group;
+ GList *list;
+ EelCanvasItem *i;
+
+ group = EEL_CANVAS_GROUP (item);
+
+ for (list = group->item_list; list; list = list->next)
+ {
+ i = list->data;
+
+ if (i->flags & EEL_CANVAS_ITEM_VISIBLE &&
+ !(i->flags & EEL_CANVAS_ITEM_MAPPED))
+ {
+ if (!(i->flags & EEL_CANVAS_ITEM_REALIZED))
+ {
+ (*EEL_CANVAS_ITEM_GET_CLASS (i)->realize)(i);
+ }
+
+ (*EEL_CANVAS_ITEM_GET_CLASS (i)->map)(i);
+ }
+ }
+
+ (*group_parent_class->map)(item);
+}
+
+/* Unmap handler for canvas groups */
+static void
+eel_canvas_group_unmap (EelCanvasItem *item)
+{
+ EelCanvasGroup *group;
+ GList *list;
+ EelCanvasItem *i;
+
+ group = EEL_CANVAS_GROUP (item);
+
+ for (list = group->item_list; list; list = list->next)
+ {
+ i = list->data;
+
+ if (i->flags & EEL_CANVAS_ITEM_MAPPED)
+ {
+ (*EEL_CANVAS_ITEM_GET_CLASS (i)->unmap)(i);
+ }
+ }
+
+ (*group_parent_class->unmap)(item);
+}
+
+/* Draw handler for canvas groups */
+static void
+eel_canvas_group_draw (EelCanvasItem *item,
+ cairo_t *cr,
+ cairo_region_t *region)
+{
+ EelCanvasGroup *group;
+ GList *list;
+ EelCanvasItem *child = NULL;
+
+ group = EEL_CANVAS_GROUP (item);
+
+ for (list = group->item_list; list; list = list->next)
+ {
+ child = list->data;
+
+ if ((child->flags & EEL_CANVAS_ITEM_MAPPED) &&
+ (EEL_CANVAS_ITEM_GET_CLASS (child)->draw))
+ {
+ GdkRectangle child_rect;
+
+ child_rect.x = child->x1;
+ child_rect.y = child->y1;
+ child_rect.width = child->x2 - child->x1 + 1;
+ child_rect.height = child->y2 - child->y1 + 1;
+
+ if (cairo_region_contains_rectangle (region, &child_rect) != CAIRO_REGION_OVERLAP_OUT)
+ {
+ EEL_CANVAS_ITEM_GET_CLASS (child)->draw (child, cr, region);
+ }
+ }
+ }
+}
+
+/* Point handler for canvas groups */
+static double
+eel_canvas_group_point (EelCanvasItem *item,
+ double x,
+ double y,
+ int cx,
+ int cy,
+ EelCanvasItem **actual_item)
+{
+ EelCanvasGroup *group;
+ GList *list;
+ EelCanvasItem *child, *point_item;
+ int x1, y1, x2, y2;
+ double gx, gy;
+ double dist, best;
+ int has_point;
+
+ group = EEL_CANVAS_GROUP (item);
+
+ x1 = cx - item->canvas->close_enough;
+ y1 = cy - item->canvas->close_enough;
+ x2 = cx + item->canvas->close_enough;
+ y2 = cy + item->canvas->close_enough;
+
+ best = 0.0;
+ *actual_item = NULL;
+
+ gx = x - group->xpos;
+ gy = y - group->ypos;
+
+ dist = 0.0; /* keep gcc happy */
+
+ for (list = group->item_list; list; list = list->next)
+ {
+ child = list->data;
+
+ if ((child->x1 > x2) || (child->y1 > y2) || (child->x2 < x1) || (child->y2 < y1))
+ {
+ continue;
+ }
+
+ point_item = NULL; /* cater for incomplete item implementations */
+
+ if ((child->flags & EEL_CANVAS_ITEM_MAPPED)
+ && EEL_CANVAS_ITEM_GET_CLASS (child)->point)
+ {
+ dist = eel_canvas_item_invoke_point (child, gx, gy, cx, cy, &point_item);
+ has_point = TRUE;
+ }
+ else
+ {
+ has_point = FALSE;
+ }
+
+ if (has_point
+ && point_item
+ && ((int) (dist * item->canvas->pixels_per_unit + 0.5)
+ <= item->canvas->close_enough))
+ {
+ best = dist;
+ *actual_item = point_item;
+ }
+ }
+
+ return best;
+}
+
+static void
+eel_canvas_group_translate (EelCanvasItem *item,
+ double dx,
+ double dy)
+{
+ EelCanvasGroup *group;
+
+ group = EEL_CANVAS_GROUP (item);
+
+ group->xpos += dx;
+ group->ypos += dy;
+}
+
+/* Bounds handler for canvas groups */
+static void
+eel_canvas_group_bounds (EelCanvasItem *item,
+ double *x1,
+ double *y1,
+ double *x2,
+ double *y2)
+{
+ EelCanvasGroup *group;
+ EelCanvasItem *child;
+ GList *list;
+ double tx1, ty1, tx2, ty2;
+ double minx, miny, maxx, maxy;
+ int set;
+
+ group = EEL_CANVAS_GROUP (item);
+
+ /* Get the bounds of the first visible item */
+
+ child = NULL; /* Unnecessary but eliminates a warning. */
+
+ set = FALSE;
+
+ for (list = group->item_list; list; list = list->next)
+ {
+ child = list->data;
+
+ if (child->flags & EEL_CANVAS_ITEM_MAPPED)
+ {
+ set = TRUE;
+ eel_canvas_item_get_bounds (child, &minx, &miny, &maxx, &maxy);
+ break;
+ }
+ }
+
+ /* If there were no visible items, return an empty bounding box */
+
+ if (!set)
+ {
+ *x1 = *y1 = *x2 = *y2 = 0.0;
+ return;
+ }
+
+ /* Now we can grow the bounds using the rest of the items */
+
+ list = list->next;
+
+ for (; list; list = list->next)
+ {
+ child = list->data;
+
+ if (!(child->flags & EEL_CANVAS_ITEM_MAPPED))
+ {
+ continue;
+ }
+
+ eel_canvas_item_get_bounds (child, &tx1, &ty1, &tx2, &ty2);
+
+ if (tx1 < minx)
+ {
+ minx = tx1;
+ }
+
+ if (ty1 < miny)
+ {
+ miny = ty1;
+ }
+
+ if (tx2 > maxx)
+ {
+ maxx = tx2;
+ }
+
+ if (ty2 > maxy)
+ {
+ maxy = ty2;
+ }
+ }
+
+ /* Make the bounds be relative to our parent's coordinate system */
+
+ if (item->parent)
+ {
+ minx += group->xpos;
+ miny += group->ypos;
+ maxx += group->xpos;
+ maxy += group->ypos;
+ }
+
+ *x1 = minx;
+ *y1 = miny;
+ *x2 = maxx;
+ *y2 = maxy;
+}
+
+/* Adds an item to a group */
+static void
+group_add (EelCanvasGroup *group,
+ EelCanvasItem *item)
+{
+ g_object_ref_sink (item);
+
+ if (!group->item_list)
+ {
+ group->item_list = g_list_append (group->item_list, item);
+ group->item_list_end = group->item_list;
+ }
+ else
+ {
+ group->item_list_end = g_list_append (group->item_list_end, item)->next;
+ }
+
+ if (item->flags & EEL_CANVAS_ITEM_VISIBLE &&
+ group->item.flags & EEL_CANVAS_ITEM_MAPPED)
+ {
+ if (!(item->flags & EEL_CANVAS_ITEM_REALIZED))
+ {
+ (*EEL_CANVAS_ITEM_GET_CLASS (item)->realize)(item);
+ }
+
+ if (!(item->flags & EEL_CANVAS_ITEM_MAPPED))
+ {
+ (*EEL_CANVAS_ITEM_GET_CLASS (item)->map)(item);
+ }
+ }
+
+ if (item->flags & EEL_CANVAS_ITEM_VISIBLE)
+ {
+ eel_canvas_queue_resize (EEL_CANVAS_ITEM (group)->canvas);
+ }
+}
+
+/* Removes an item from a group */
+static void
+group_remove (EelCanvasGroup *group,
+ EelCanvasItem *item)
+{
+ GList *children;
+
+ g_return_if_fail (EEL_IS_CANVAS_GROUP (group));
+ g_return_if_fail (EEL_IS_CANVAS_ITEM (item));
+
+ for (children = group->item_list; children; children = children->next)
+ {
+ if (children->data == item)
+ {
+ if (item->flags & EEL_CANVAS_ITEM_MAPPED)
+ {
+ (*EEL_CANVAS_ITEM_GET_CLASS (item)->unmap)(item);
+ }
+
+ if (item->flags & EEL_CANVAS_ITEM_REALIZED)
+ {
+ (*EEL_CANVAS_ITEM_GET_CLASS (item)->unrealize)(item);
+ }
+
+ if (item->flags & EEL_CANVAS_ITEM_VISIBLE)
+ {
+ eel_canvas_queue_resize (item->canvas);
+ }
+
+ /* Unparent the child */
+
+ item->parent = NULL;
+ /* item->canvas = NULL; */
+ g_object_unref (G_OBJECT (item));
+
+ /* Remove it from the list */
+
+ if (children == group->item_list_end)
+ {
+ group->item_list_end = children->prev;
+ }
+
+ group->item_list = g_list_remove_link (group->item_list, children);
+ g_list_free (children);
+ break;
+ }
+ }
+}
+
+
+/*** EelCanvas ***/
+
+
+static void eel_canvas_class_init (EelCanvasClass *klass);
+static void eel_canvas_init (EelCanvas *canvas);
+static void eel_canvas_destroy (GtkWidget *object);
+static void eel_canvas_map (GtkWidget *widget);
+static void eel_canvas_unmap (GtkWidget *widget);
+static void eel_canvas_realize (GtkWidget *widget);
+static void eel_canvas_unrealize (GtkWidget *widget);
+static void eel_canvas_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation);
+static gint eel_canvas_button (GtkWidget *widget,
+ GdkEventButton *event);
+static gint eel_canvas_motion (GtkWidget *widget,
+ GdkEventMotion *event);
+static gint eel_canvas_draw (GtkWidget *widget,
+ cairo_t *cr);
+static gint eel_canvas_key (GtkWidget *widget,
+ GdkEventKey *event);
+static gint eel_canvas_crossing (GtkWidget *widget,
+ GdkEventCrossing *event);
+static gint eel_canvas_focus_in (GtkWidget *widget,
+ GdkEventFocus *event);
+static gint eel_canvas_focus_out (GtkWidget *widget,
+ GdkEventFocus *event);
+static void eel_canvas_request_update_real (EelCanvas *canvas);
+static GtkLayoutClass *canvas_parent_class;
+
+/**
+ * eel_canvas_get_type:
+ *
+ * Registers the &EelCanvas class if necessary, and returns the type ID
+ * associated to it.
+ *
+ * Return value: The type ID of the &EelCanvas class.
+ **/
+GType
+eel_canvas_get_type (void)
+{
+ static GType canvas_type = 0;
+
+ if (!canvas_type)
+ {
+ static const GTypeInfo canvas_info =
+ {
+ sizeof (EelCanvasClass),
+ (GBaseInitFunc) NULL,
+ (GBaseFinalizeFunc) NULL,
+ (GClassInitFunc) eel_canvas_class_init,
+ NULL, /* class_finalize */
+ NULL, /* class_data */
+ sizeof (EelCanvas),
+ 0, /* n_preallocs */
+ (GInstanceInitFunc) eel_canvas_init
+ };
+
+ canvas_type = g_type_register_static (gtk_layout_get_type (),
+ "EelCanvas",
+ &canvas_info,
+ 0);
+ }
+
+ return canvas_type;
+}
+
+static void
+eel_canvas_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ switch (prop_id)
+ {
+ default:
+ {
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ }
+ break;
+ }
+}
+
+static void
+eel_canvas_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ switch (prop_id)
+ {
+ default:
+ {
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ }
+ break;
+ }
+}
+
+static void
+eel_canvas_accessible_adjustment_changed (GtkAdjustment *adjustment,
+ gpointer data)
+{
+ AtkObject *atk_obj;
+
+ /* The scrollbars have changed */
+ atk_obj = ATK_OBJECT (data);
+
+ g_signal_emit_by_name (atk_obj, "visible-data-changed");
+}
+
+static void
+eel_canvas_accessible_initialize (AtkObject *obj,
+ gpointer data)
+{
+ EelCanvas *canvas = data;
+
+ if (ATK_OBJECT_CLASS (accessible_parent_class)->initialize != NULL)
+ {
+ ATK_OBJECT_CLASS (accessible_parent_class)->initialize (obj, data);
+ }
+
+ gtk_accessible_set_widget (GTK_ACCESSIBLE (obj), GTK_WIDGET (data));
+ g_signal_connect (gtk_scrollable_get_hadjustment (GTK_SCROLLABLE (canvas)),
+ "value-changed",
+ G_CALLBACK (eel_canvas_accessible_adjustment_changed),
+ obj);
+ g_signal_connect (gtk_scrollable_get_vadjustment (GTK_SCROLLABLE (canvas)),
+ "value-changed",
+ G_CALLBACK (eel_canvas_accessible_adjustment_changed),
+ obj);
+
+ obj->role = ATK_ROLE_LAYERED_PANE;
+}
+
+static gint
+eel_canvas_accessible_get_n_children (AtkObject *obj)
+{
+ GtkAccessible *accessible;
+ GtkWidget *widget;
+ EelCanvas *canvas;
+ EelCanvasGroup *root_group;
+
+ accessible = GTK_ACCESSIBLE (obj);
+ widget = gtk_accessible_get_widget (accessible);
+
+ if (widget == NULL)
+ {
+ return 0;
+ }
+
+ g_return_val_if_fail (EEL_IS_CANVAS (widget), 0);
+
+ canvas = EEL_CANVAS (widget);
+ root_group = eel_canvas_root (canvas);
+ g_return_val_if_fail (root_group, 0);
+
+ return 1;
+}
+
+static AtkObject *
+eel_canvas_accessible_ref_child (AtkObject *obj,
+ gint i)
+{
+ GtkAccessible *accessible;
+ GtkWidget *widget;
+ EelCanvas *canvas;
+ EelCanvasGroup *root_group;
+ AtkObject *atk_object;
+
+ /* Canvas only has one child, so return NULL if index is non zero */
+ if (i != 0)
+ {
+ return NULL;
+ }
+
+ accessible = GTK_ACCESSIBLE (obj);
+ widget = gtk_accessible_get_widget (accessible);
+
+ if (widget == NULL)
+ {
+ return NULL;
+ }
+
+ canvas = EEL_CANVAS (widget);
+ root_group = eel_canvas_root (canvas);
+ g_return_val_if_fail (root_group, NULL);
+
+ atk_object = atk_gobject_accessible_for_object (G_OBJECT (root_group));
+
+ return g_object_ref (atk_object);
+}
+
+static void
+eel_canvas_accessible_class_init (EelCanvasAccessibleClass *klass)
+{
+ AtkObjectClass *atk_class = ATK_OBJECT_CLASS (klass);
+
+ accessible_parent_class = g_type_class_peek_parent (klass);
+
+ atk_class->initialize = eel_canvas_accessible_initialize;
+ atk_class->get_n_children = eel_canvas_accessible_get_n_children;
+ atk_class->ref_child = eel_canvas_accessible_ref_child;
+}
+
+static void
+eel_canvas_accessible_init (EelCanvasAccessible *accessible)
+{
+}
+
+G_DEFINE_TYPE (EelCanvasAccessible, eel_canvas_accessible, GTK_TYPE_CONTAINER_ACCESSIBLE)
+
+/* Class initialization function for EelCanvasClass */
+static void
+eel_canvas_class_init (EelCanvasClass *klass)
+{
+ GObjectClass *gobject_class;
+ GtkWidgetClass *widget_class;
+
+ gobject_class = (GObjectClass *) klass;
+ widget_class = (GtkWidgetClass *) klass;
+
+ canvas_parent_class = g_type_class_peek_parent (klass);
+
+ gobject_class->set_property = eel_canvas_set_property;
+ gobject_class->get_property = eel_canvas_get_property;
+
+ widget_class->destroy = eel_canvas_destroy;
+ widget_class->map = eel_canvas_map;
+ widget_class->unmap = eel_canvas_unmap;
+ widget_class->realize = eel_canvas_realize;
+ widget_class->unrealize = eel_canvas_unrealize;
+ widget_class->size_allocate = eel_canvas_size_allocate;
+ widget_class->button_press_event = eel_canvas_button;
+ widget_class->button_release_event = eel_canvas_button;
+ widget_class->motion_notify_event = eel_canvas_motion;
+ widget_class->draw = eel_canvas_draw;
+ widget_class->key_press_event = eel_canvas_key;
+ widget_class->key_release_event = eel_canvas_key;
+ widget_class->enter_notify_event = eel_canvas_crossing;
+ widget_class->leave_notify_event = eel_canvas_crossing;
+ widget_class->focus_in_event = eel_canvas_focus_in;
+ widget_class->focus_out_event = eel_canvas_focus_out;
+
+ klass->request_update = eel_canvas_request_update_real;
+
+ gtk_widget_class_set_accessible_type (widget_class, eel_canvas_accessible_get_type ());
+}
+
+/* Callback used when the root item of a canvas is destroyed. The user should
+ * never ever do this, so we panic if this happens.
+ */
+static void
+panic_root_destroyed (GtkWidget *object,
+ gpointer data)
+{
+ g_error ("Eeeek, root item %p of canvas %p was destroyed!", object, data);
+}
+
+/* Object initialization function for EelCanvas */
+static void
+eel_canvas_init (EelCanvas *canvas)
+{
+ guint width, height;
+ gtk_widget_set_can_focus (GTK_WIDGET (canvas), TRUE);
+
+ gtk_widget_set_redraw_on_allocate (GTK_WIDGET (canvas), FALSE);
+
+ canvas->scroll_x1 = 0.0;
+ canvas->scroll_y1 = 0.0;
+ gtk_layout_get_size (GTK_LAYOUT (canvas),
+ &width, &height);
+ canvas->scroll_x2 = width;
+ canvas->scroll_y2 = height;
+
+ canvas->pixels_per_unit = 1.0;
+
+ canvas->pick_event.type = GDK_LEAVE_NOTIFY;
+ canvas->pick_event.crossing.x = 0;
+ canvas->pick_event.crossing.y = 0;
+
+ gtk_scrollable_set_hadjustment (GTK_SCROLLABLE (canvas), NULL);
+ gtk_scrollable_set_vadjustment (GTK_SCROLLABLE (canvas), NULL);
+
+ /* Create the root item as a special case */
+
+ canvas->root = EEL_CANVAS_ITEM (g_object_new (eel_canvas_group_get_type (), NULL));
+ canvas->root->canvas = canvas;
+
+ g_object_ref_sink (canvas->root);
+
+ canvas->root_destroy_id = g_signal_connect (G_OBJECT (canvas->root),
+ "destroy", G_CALLBACK (panic_root_destroyed), canvas);
+
+ canvas->need_repick = TRUE;
+ canvas->doing_update = FALSE;
+}
+
+/* Convenience function to remove the idle handler of a canvas */
+static void
+remove_idle (EelCanvas *canvas)
+{
+ if (canvas->idle_id == 0)
+ {
+ return;
+ }
+
+ g_source_remove (canvas->idle_id);
+ canvas->idle_id = 0;
+}
+
+/* Removes the transient state of the canvas (idle handler, grabs). */
+static void
+shutdown_transients (EelCanvas *canvas)
+{
+ /* We turn off the need_redraw flag, since if the canvas is mapped again
+ * it will request a redraw anyways. We do not turn off the need_update
+ * flag, though, because updates are not queued when the canvas remaps
+ * itself.
+ */
+ if (canvas->need_redraw)
+ {
+ canvas->need_redraw = FALSE;
+ }
+
+ if (canvas->grabbed_item)
+ {
+ eel_canvas_item_ungrab (canvas->grabbed_item);
+ }
+
+ remove_idle (canvas);
+}
+
+/* Destroy handler for EelCanvas */
+static void
+eel_canvas_destroy (GtkWidget *object)
+{
+ EelCanvas *canvas;
+
+ g_return_if_fail (EEL_IS_CANVAS (object));
+
+ /* remember, destroy can be run multiple times! */
+
+ canvas = EEL_CANVAS (object);
+
+ g_clear_signal_handler (&canvas->root_destroy_id, G_OBJECT (canvas->root));
+ if (canvas->root)
+ {
+ EelCanvasItem *root = canvas->root;
+ canvas->root = NULL;
+ eel_canvas_item_destroy (root);
+ g_object_unref (root);
+ }
+
+ shutdown_transients (canvas);
+
+ if (GTK_WIDGET_CLASS (canvas_parent_class)->destroy)
+ {
+ (*GTK_WIDGET_CLASS (canvas_parent_class)->destroy)(object);
+ }
+}
+
+/**
+ * eel_canvas_new:
+ * @void:
+ *
+ * Creates a new empty canvas. If you wish to use the
+ * &EelCanvasImage item inside this canvas, then you must push the gdk_imlib
+ * visual and colormap before calling this function, and they can be popped
+ * afterwards.
+ *
+ * Return value: A newly-created canvas.
+ **/
+GtkWidget *
+eel_canvas_new (void)
+{
+ return GTK_WIDGET (g_object_new (eel_canvas_get_type (), NULL));
+}
+
+/* Map handler for the canvas */
+static void
+eel_canvas_map (GtkWidget *widget)
+{
+ EelCanvas *canvas;
+
+ g_return_if_fail (EEL_IS_CANVAS (widget));
+
+ /* Normal widget mapping stuff */
+
+ if (GTK_WIDGET_CLASS (canvas_parent_class)->map)
+ {
+ (*GTK_WIDGET_CLASS (canvas_parent_class)->map)(widget);
+ }
+
+ canvas = EEL_CANVAS (widget);
+
+ /* Map items */
+
+ if (canvas->root->flags & EEL_CANVAS_ITEM_VISIBLE &&
+ !(canvas->root->flags & EEL_CANVAS_ITEM_MAPPED) &&
+ EEL_CANVAS_ITEM_GET_CLASS (canvas->root)->map)
+ {
+ (*EEL_CANVAS_ITEM_GET_CLASS (canvas->root)->map)(canvas->root);
+ }
+}
+
+/* Unmap handler for the canvas */
+static void
+eel_canvas_unmap (GtkWidget *widget)
+{
+ EelCanvas *canvas;
+
+ g_return_if_fail (EEL_IS_CANVAS (widget));
+
+ canvas = EEL_CANVAS (widget);
+
+ shutdown_transients (canvas);
+
+ /* Unmap items */
+
+ if (EEL_CANVAS_ITEM_GET_CLASS (canvas->root)->unmap)
+ {
+ (*EEL_CANVAS_ITEM_GET_CLASS (canvas->root)->unmap)(canvas->root);
+ }
+
+ /* Normal widget unmapping stuff */
+
+ if (GTK_WIDGET_CLASS (canvas_parent_class)->unmap)
+ {
+ (*GTK_WIDGET_CLASS (canvas_parent_class)->unmap)(widget);
+ }
+}
+
+/* Realize handler for the canvas */
+static void
+eel_canvas_realize (GtkWidget *widget)
+{
+ EelCanvas *canvas;
+
+ g_return_if_fail (EEL_IS_CANVAS (widget));
+
+ /* Normal widget realization stuff */
+
+ if (GTK_WIDGET_CLASS (canvas_parent_class)->realize)
+ {
+ (*GTK_WIDGET_CLASS (canvas_parent_class)->realize)(widget);
+ }
+
+ canvas = EEL_CANVAS (widget);
+
+ gdk_window_set_events (gtk_layout_get_bin_window (GTK_LAYOUT (canvas)),
+ (gdk_window_get_events (gtk_layout_get_bin_window (GTK_LAYOUT (canvas)))
+ | GDK_EXPOSURE_MASK
+ | GDK_BUTTON_PRESS_MASK
+ | GDK_BUTTON_RELEASE_MASK
+ | GDK_POINTER_MOTION_MASK
+ | GDK_KEY_PRESS_MASK
+ | GDK_KEY_RELEASE_MASK
+ | GDK_ENTER_NOTIFY_MASK
+ | GDK_LEAVE_NOTIFY_MASK
+ | GDK_FOCUS_CHANGE_MASK));
+
+ /* Create our own temporary pixmap gc and realize all the items */
+
+ (*EEL_CANVAS_ITEM_GET_CLASS (canvas->root)->realize)(canvas->root);
+}
+
+/* Unrealize handler for the canvas */
+static void
+eel_canvas_unrealize (GtkWidget *widget)
+{
+ EelCanvas *canvas;
+
+ g_return_if_fail (EEL_IS_CANVAS (widget));
+
+ canvas = EEL_CANVAS (widget);
+
+ shutdown_transients (canvas);
+
+ /* Unrealize items and parent widget */
+
+ (*EEL_CANVAS_ITEM_GET_CLASS (canvas->root)->unrealize)(canvas->root);
+
+ if (GTK_WIDGET_CLASS (canvas_parent_class)->unrealize)
+ {
+ (*GTK_WIDGET_CLASS (canvas_parent_class)->unrealize)(widget);
+ }
+}
+
+/* Handles scrolling of the canvas. Adjusts the scrolling and zooming offset to
+ * keep as much as possible of the canvas scrolling region in view.
+ */
+static void
+scroll_to (EelCanvas *canvas,
+ int cx,
+ int cy)
+{
+ int scroll_width, scroll_height;
+ int right_limit, bottom_limit;
+ int old_zoom_xofs, old_zoom_yofs;
+ int changed_x = FALSE, changed_y = FALSE;
+ int canvas_width, canvas_height;
+ GtkAllocation allocation;
+ GtkAdjustment *vadjustment, *hadjustment;
+ guint width, height;
+
+ gtk_widget_get_allocation (GTK_WIDGET (canvas), &allocation);
+ canvas_width = allocation.width;
+ canvas_height = allocation.height;
+
+ scroll_width = floor ((canvas->scroll_x2 - canvas->scroll_x1) * canvas->pixels_per_unit + 0.5);
+ scroll_height = floor ((canvas->scroll_y2 - canvas->scroll_y1) * canvas->pixels_per_unit + 0.5);
+
+ right_limit = scroll_width - canvas_width;
+ bottom_limit = scroll_height - canvas_height;
+
+ old_zoom_xofs = canvas->zoom_xofs;
+ old_zoom_yofs = canvas->zoom_yofs;
+
+ if (right_limit < 0)
+ {
+ cx = 0;
+ if (canvas->center_scroll_region)
+ {
+ canvas->zoom_xofs = (canvas_width - scroll_width) / 2;
+ scroll_width = canvas_width;
+ }
+ else
+ {
+ canvas->zoom_xofs = 0;
+ }
+ }
+ else if (cx < 0)
+ {
+ cx = 0;
+ canvas->zoom_xofs = 0;
+ }
+ else if (cx > right_limit)
+ {
+ cx = right_limit;
+ canvas->zoom_xofs = 0;
+ }
+ else
+ {
+ canvas->zoom_xofs = 0;
+ }
+
+ if (bottom_limit < 0)
+ {
+ cy = 0;
+ if (canvas->center_scroll_region)
+ {
+ canvas->zoom_yofs = (canvas_height - scroll_height) / 2;
+ scroll_height = canvas_height;
+ }
+ else
+ {
+ canvas->zoom_yofs = 0;
+ }
+ }
+ else if (cy < 0)
+ {
+ cy = 0;
+ canvas->zoom_yofs = 0;
+ }
+ else if (cy > bottom_limit)
+ {
+ cy = bottom_limit;
+ canvas->zoom_yofs = 0;
+ }
+ else
+ {
+ canvas->zoom_yofs = 0;
+ }
+
+ if ((canvas->zoom_xofs != old_zoom_xofs) || (canvas->zoom_yofs != old_zoom_yofs))
+ {
+ /* This can only occur, if either canvas size or widget size changes
+ * So I think we can request full redraw here
+ * More stuff - we have to mark root as needing fresh affine (Lauris)
+ */
+ if (!(canvas->root->flags & EEL_CANVAS_ITEM_NEED_DEEP_UPDATE))
+ {
+ canvas->root->flags |= EEL_CANVAS_ITEM_NEED_DEEP_UPDATE;
+ eel_canvas_request_update (canvas);
+ }
+ gtk_widget_queue_draw (GTK_WIDGET (canvas));
+ }
+
+ hadjustment = gtk_scrollable_get_hadjustment (GTK_SCROLLABLE (canvas));
+ vadjustment = gtk_scrollable_get_vadjustment (GTK_SCROLLABLE (canvas));
+
+ if (((int) gtk_adjustment_get_value (hadjustment)) != cx)
+ {
+ gtk_adjustment_set_value (hadjustment, cx);
+ changed_x = TRUE;
+ }
+
+ if (((int) gtk_adjustment_get_value (vadjustment)) != cy)
+ {
+ gtk_adjustment_set_value (vadjustment, cy);
+ changed_y = TRUE;
+ }
+
+ gtk_layout_get_size (&canvas->layout, &width, &height);
+ if ((scroll_width != (int) width) || (scroll_height != (int) height))
+ {
+ gtk_layout_set_size (GTK_LAYOUT (canvas), scroll_width, scroll_height);
+ }
+
+ /* Signal GtkLayout that it should do a redraw. */
+ if (changed_x)
+ {
+ g_signal_emit_by_name (hadjustment, "value-changed");
+ }
+ if (changed_y)
+ {
+ g_signal_emit_by_name (vadjustment, "value-changed");
+ }
+}
+
+/* Size allocation handler for the canvas */
+static void
+eel_canvas_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation)
+{
+ EelCanvas *canvas;
+ GtkAdjustment *vadjustment, *hadjustment;
+
+ g_return_if_fail (EEL_IS_CANVAS (widget));
+ g_return_if_fail (allocation != NULL);
+
+ if (GTK_WIDGET_CLASS (canvas_parent_class)->size_allocate)
+ {
+ (*GTK_WIDGET_CLASS (canvas_parent_class)->size_allocate)(widget, allocation);
+ }
+
+ canvas = EEL_CANVAS (widget);
+
+ /* Recenter the view, if appropriate */
+
+ hadjustment = gtk_scrollable_get_hadjustment (GTK_SCROLLABLE (canvas));
+ vadjustment = gtk_scrollable_get_vadjustment (GTK_SCROLLABLE (canvas));
+
+ gtk_adjustment_set_page_size (hadjustment, allocation->width);
+ gtk_adjustment_set_page_increment (hadjustment, allocation->width / 2);
+
+ gtk_adjustment_set_page_size (vadjustment, allocation->height);
+ gtk_adjustment_set_page_increment (vadjustment, allocation->height / 2);
+
+ scroll_to (canvas,
+ gtk_adjustment_get_value (hadjustment),
+ gtk_adjustment_get_value (vadjustment));
+
+ g_signal_emit_by_name (hadjustment, "changed");
+ g_signal_emit_by_name (vadjustment, "changed");
+}
+
+/* Emits an event for an item in the canvas, be it the current item, grabbed
+ * item, or focused item, as appropriate.
+ */
+
+static int
+emit_event (EelCanvas *canvas,
+ GdkEvent *event)
+{
+ GdkEvent ev;
+ gint finished;
+ EelCanvasItem *item;
+ EelCanvasItem *parent;
+ guint mask;
+
+ /* Could be an old pick event */
+ if (!gtk_widget_get_realized (GTK_WIDGET (canvas)))
+ {
+ return FALSE;
+ }
+
+ /* Perform checks for grabbed items */
+
+ if (canvas->grabbed_item &&
+ !is_descendant (canvas->current_item, canvas->grabbed_item))
+ {
+ return FALSE;
+ }
+
+ if (canvas->grabbed_item)
+ {
+ switch (event->type)
+ {
+ case GDK_ENTER_NOTIFY:
+ {
+ mask = GDK_ENTER_NOTIFY_MASK;
+ }
+ break;
+
+ case GDK_LEAVE_NOTIFY:
+ {
+ mask = GDK_LEAVE_NOTIFY_MASK;
+ }
+ break;
+
+ case GDK_MOTION_NOTIFY:
+ {
+ mask = GDK_POINTER_MOTION_MASK;
+ }
+ break;
+
+ case GDK_BUTTON_PRESS:
+ case GDK_2BUTTON_PRESS:
+ case GDK_3BUTTON_PRESS:
+ {
+ mask = GDK_BUTTON_PRESS_MASK;
+ }
+ break;
+
+ case GDK_BUTTON_RELEASE:
+ {
+ mask = GDK_BUTTON_RELEASE_MASK;
+ }
+ break;
+
+ case GDK_KEY_PRESS:
+ {
+ mask = GDK_KEY_PRESS_MASK;
+ }
+ break;
+
+ case GDK_KEY_RELEASE:
+ {
+ mask = GDK_KEY_RELEASE_MASK;
+ }
+ break;
+
+ default:
+ {
+ mask = 0;
+ }
+ break;
+ }
+
+ if (!(mask & canvas->grabbed_event_mask))
+ {
+ return FALSE;
+ }
+ }
+
+ /* Convert to world coordinates -- we have two cases because of diferent
+ * offsets of the fields in the event structures.
+ */
+
+ ev = *event;
+
+ switch (ev.type)
+ {
+ case GDK_ENTER_NOTIFY:
+ case GDK_LEAVE_NOTIFY:
+ {
+ eel_canvas_window_to_world (canvas,
+ ev.crossing.x, ev.crossing.y,
+ &ev.crossing.x, &ev.crossing.y);
+ }
+ break;
+
+ case GDK_MOTION_NOTIFY:
+ case GDK_BUTTON_PRESS:
+ case GDK_2BUTTON_PRESS:
+ case GDK_3BUTTON_PRESS:
+ case GDK_BUTTON_RELEASE:
+ {
+ eel_canvas_window_to_world (canvas,
+ ev.motion.x, ev.motion.y,
+ &ev.motion.x, &ev.motion.y);
+ }
+ break;
+
+ default:
+ {
+ }
+ break;
+ }
+
+ /* Choose where we send the event */
+
+ item = canvas->current_item;
+
+ if (canvas->focused_item
+ && ((event->type == GDK_KEY_PRESS) ||
+ (event->type == GDK_KEY_RELEASE) ||
+ (event->type == GDK_FOCUS_CHANGE)))
+ {
+ item = canvas->focused_item;
+ }
+
+ /* The event is propagated up the hierarchy (for if someone connected to
+ * a group instead of a leaf event), and emission is stopped if a
+ * handler returns TRUE, just like for GtkWidget events.
+ */
+
+ finished = FALSE;
+
+ while (item && !finished)
+ {
+ g_object_ref (item);
+
+ g_signal_emit (
+ G_OBJECT (item), item_signals[ITEM_EVENT], 0,
+ &ev, &finished);
+
+ parent = item->parent;
+ g_object_unref (item);
+
+ item = parent;
+ }
+
+ return finished;
+}
+
+/* Re-picks the current item in the canvas, based on the event's coordinates.
+ * Also emits enter/leave events for items as appropriate.
+ */
+static int
+pick_current_item (EelCanvas *canvas,
+ GdkEvent *event)
+{
+ int button_down;
+ double x, y;
+ int cx, cy;
+ int retval;
+
+ retval = FALSE;
+
+ /* If a button is down, we'll perform enter and leave events on the
+ * current item, but not enter on any other item. This is more or less
+ * like X pointer grabbing for canvas items.
+ */
+ button_down = canvas->state & (GDK_BUTTON1_MASK
+ | GDK_BUTTON2_MASK
+ | GDK_BUTTON3_MASK
+ | GDK_BUTTON4_MASK
+ | GDK_BUTTON5_MASK);
+ if (!button_down)
+ {
+ canvas->left_grabbed_item = FALSE;
+ }
+
+ /* Save the event in the canvas. This is used to synthesize enter and
+ * leave events in case the current item changes. It is also used to
+ * re-pick the current item if the current one gets deleted. Also,
+ * synthesize an enter event.
+ */
+ if (event != &canvas->pick_event)
+ {
+ if ((event->type == GDK_MOTION_NOTIFY) || (event->type == GDK_BUTTON_RELEASE))
+ {
+ /* these fields have the same offsets in both types of events */
+
+ canvas->pick_event.crossing.type = GDK_ENTER_NOTIFY;
+ canvas->pick_event.crossing.window = event->motion.window;
+ canvas->pick_event.crossing.send_event = event->motion.send_event;
+ canvas->pick_event.crossing.subwindow = NULL;
+ canvas->pick_event.crossing.x = event->motion.x;
+ canvas->pick_event.crossing.y = event->motion.y;
+ canvas->pick_event.crossing.mode = GDK_CROSSING_NORMAL;
+ canvas->pick_event.crossing.detail = GDK_NOTIFY_NONLINEAR;
+ canvas->pick_event.crossing.focus = FALSE;
+ canvas->pick_event.crossing.state = event->motion.state;
+
+ /* these fields don't have the same offsets in both types of events */
+
+ if (event->type == GDK_MOTION_NOTIFY)
+ {
+ canvas->pick_event.crossing.x_root = event->motion.x_root;
+ canvas->pick_event.crossing.y_root = event->motion.y_root;
+ }
+ else
+ {
+ canvas->pick_event.crossing.x_root = event->button.x_root;
+ canvas->pick_event.crossing.y_root = event->button.y_root;
+ }
+ }
+ else
+ {
+ canvas->pick_event = *event;
+ }
+ }
+
+ /* Don't do anything else if this is a recursive call */
+
+ if (canvas->in_repick)
+ {
+ return retval;
+ }
+
+ /* LeaveNotify means that there is no current item, so we don't look for one */
+
+ if (canvas->pick_event.type != GDK_LEAVE_NOTIFY)
+ {
+ /* these fields don't have the same offsets in both types of events */
+
+ if (canvas->pick_event.type == GDK_ENTER_NOTIFY)
+ {
+ x = canvas->pick_event.crossing.x;
+ y = canvas->pick_event.crossing.y;
+ }
+ else
+ {
+ x = canvas->pick_event.motion.x;
+ y = canvas->pick_event.motion.y;
+ }
+
+ /* canvas pixel coords */
+
+ cx = (int) (x + 0.5);
+ cy = (int) (y + 0.5);
+
+ /* world coords */
+ eel_canvas_c2w (canvas, cx, cy, &x, &y);
+
+ /* find the closest item */
+ if (canvas->root->flags & EEL_CANVAS_ITEM_MAPPED)
+ {
+ eel_canvas_item_invoke_point (canvas->root, x, y, cx, cy,
+ &canvas->new_current_item);
+ }
+ else
+ {
+ canvas->new_current_item = NULL;
+ }
+ }
+ else
+ {
+ canvas->new_current_item = NULL;
+ }
+
+ if ((canvas->new_current_item == canvas->current_item) && !canvas->left_grabbed_item)
+ {
+ return retval; /* current item did not change */
+ }
+ /* Synthesize events for old and new current items */
+
+ if ((canvas->new_current_item != canvas->current_item)
+ && (canvas->current_item != NULL)
+ && !canvas->left_grabbed_item)
+ {
+ GdkEvent new_event;
+
+ new_event = canvas->pick_event;
+ new_event.type = GDK_LEAVE_NOTIFY;
+
+ new_event.crossing.detail = GDK_NOTIFY_ANCESTOR;
+ new_event.crossing.subwindow = NULL;
+ canvas->in_repick = TRUE;
+ retval = emit_event (canvas, &new_event);
+ canvas->in_repick = FALSE;
+ }
+
+ /* new_current_item may have been set to NULL during the call to emit_event() above */
+
+ if ((canvas->new_current_item != canvas->current_item) && button_down)
+ {
+ canvas->current_item = canvas->new_current_item;
+ canvas->left_grabbed_item = TRUE;
+ return retval;
+ }
+
+ /* Handle the rest of cases */
+
+ canvas->left_grabbed_item = FALSE;
+ canvas->current_item = canvas->new_current_item;
+
+ if (canvas->current_item != NULL)
+ {
+ GdkEvent new_event;
+
+ new_event = canvas->pick_event;
+ new_event.type = GDK_ENTER_NOTIFY;
+ new_event.crossing.detail = GDK_NOTIFY_ANCESTOR;
+ new_event.crossing.subwindow = NULL;
+ retval = emit_event (canvas, &new_event);
+ }
+
+ return retval;
+}
+
+/* Button event handler for the canvas */
+static gint
+eel_canvas_button (GtkWidget *widget,
+ GdkEventButton *event)
+{
+ EelCanvas *canvas;
+ int mask;
+ int retval;
+
+ g_return_val_if_fail (EEL_IS_CANVAS (widget), FALSE);
+ g_return_val_if_fail (event != NULL, FALSE);
+
+ retval = FALSE;
+
+ canvas = EEL_CANVAS (widget);
+
+ /* Don't handle extra mouse button events */
+ if (event->button > 5)
+ {
+ return FALSE;
+ }
+
+ /*
+ * dispatch normally regardless of the event's window if an item has
+ * has a pointer grab in effect
+ */
+ if (!canvas->grabbed_item && event->window != gtk_layout_get_bin_window (GTK_LAYOUT (canvas)))
+ {
+ return retval;
+ }
+
+ switch (event->button)
+ {
+ case 1:
+ {
+ mask = GDK_BUTTON1_MASK;
+ }
+ break;
+
+ case 2:
+ {
+ mask = GDK_BUTTON2_MASK;
+ }
+ break;
+
+ case 3:
+ {
+ mask = GDK_BUTTON3_MASK;
+ }
+ break;
+
+ case 4:
+ {
+ mask = GDK_BUTTON4_MASK;
+ }
+ break;
+
+ case 5:
+ {
+ mask = GDK_BUTTON5_MASK;
+ }
+ break;
+
+ default:
+ mask = 0;
+ }
+
+ switch (event->type)
+ {
+ case GDK_BUTTON_PRESS:
+ case GDK_2BUTTON_PRESS:
+ case GDK_3BUTTON_PRESS:
+ {
+ /* Pick the current item as if the button were not pressed, and
+ * then process the event.
+ */
+ event->state ^= mask;
+ canvas->state = event->state;
+ pick_current_item (canvas, (GdkEvent *) event);
+ event->state ^= mask;
+ canvas->state = event->state;
+ retval = emit_event (canvas, (GdkEvent *) event);
+ }
+ break;
+
+ case GDK_BUTTON_RELEASE:
+ {
+ /* Process the event as if the button were pressed, then repick
+ * after the button has been released
+ */
+ canvas->state = event->state;
+ retval = emit_event (canvas, (GdkEvent *) event);
+ event->state ^= mask;
+ canvas->state = event->state;
+ pick_current_item (canvas, (GdkEvent *) event);
+ event->state ^= mask;
+ }
+ break;
+
+ default:
+ g_assert_not_reached ();
+ }
+
+ return retval;
+}
+
+/* Motion event handler for the canvas */
+static gint
+eel_canvas_motion (GtkWidget *widget,
+ GdkEventMotion *event)
+{
+ EelCanvas *canvas;
+
+ g_return_val_if_fail (EEL_IS_CANVAS (widget), FALSE);
+ g_return_val_if_fail (event != NULL, FALSE);
+
+ canvas = EEL_CANVAS (widget);
+
+ if (event->window != gtk_layout_get_bin_window (GTK_LAYOUT (canvas)))
+ {
+ return FALSE;
+ }
+
+ canvas->state = event->state;
+ pick_current_item (canvas, (GdkEvent *) event);
+ return emit_event (canvas, (GdkEvent *) event);
+}
+
+/* Key event handler for the canvas */
+static gint
+eel_canvas_key (GtkWidget *widget,
+ GdkEventKey *event)
+{
+ EelCanvas *canvas;
+
+ g_return_val_if_fail (EEL_IS_CANVAS (widget), FALSE);
+ g_return_val_if_fail (event != NULL, FALSE);
+
+ canvas = EEL_CANVAS (widget);
+
+ if (emit_event (canvas, (GdkEvent *) event))
+ {
+ return TRUE;
+ }
+ if (event->type == GDK_KEY_RELEASE)
+ {
+ return GTK_WIDGET_CLASS (canvas_parent_class)->key_release_event (widget, event);
+ }
+ else
+ {
+ return GTK_WIDGET_CLASS (canvas_parent_class)->key_press_event (widget, event);
+ }
+}
+
+
+/* Crossing event handler for the canvas */
+static gint
+eel_canvas_crossing (GtkWidget *widget,
+ GdkEventCrossing *event)
+{
+ EelCanvas *canvas;
+
+ g_return_val_if_fail (EEL_IS_CANVAS (widget), FALSE);
+ g_return_val_if_fail (event != NULL, FALSE);
+
+ canvas = EEL_CANVAS (widget);
+
+ if (event->window != gtk_layout_get_bin_window (GTK_LAYOUT (canvas)))
+ {
+ return FALSE;
+ }
+
+ canvas->state = event->state;
+ return pick_current_item (canvas, (GdkEvent *) event);
+}
+
+/* Focus in handler for the canvas */
+static gint
+eel_canvas_focus_in (GtkWidget *widget,
+ GdkEventFocus *event)
+{
+ EelCanvas *canvas;
+
+ canvas = EEL_CANVAS (widget);
+
+ if (canvas->focused_item)
+ {
+ return emit_event (canvas, (GdkEvent *) event);
+ }
+ else
+ {
+ return FALSE;
+ }
+}
+
+/* Focus out handler for the canvas */
+static gint
+eel_canvas_focus_out (GtkWidget *widget,
+ GdkEventFocus *event)
+{
+ EelCanvas *canvas;
+
+ canvas = EEL_CANVAS (widget);
+
+ if (canvas->focused_item)
+ {
+ return emit_event (canvas, (GdkEvent *) event);
+ }
+ else
+ {
+ return FALSE;
+ }
+}
+
+
+static cairo_region_t *
+eel_cairo_get_clip_region (cairo_t *cr)
+{
+ cairo_rectangle_list_t *list;
+ cairo_region_t *region;
+ int i;
+
+ list = cairo_copy_clip_rectangle_list (cr);
+ if (list->status == CAIRO_STATUS_CLIP_NOT_REPRESENTABLE)
+ {
+ cairo_rectangle_int_t clip_rect;
+
+ cairo_rectangle_list_destroy (list);
+
+ if (!gdk_cairo_get_clip_rectangle (cr, &clip_rect))
+ {
+ return NULL;
+ }
+ return cairo_region_create_rectangle (&clip_rect);
+ }
+
+
+ region = cairo_region_create ();
+ for (i = list->num_rectangles - 1; i >= 0; --i)
+ {
+ cairo_rectangle_t *rect = &list->rectangles[i];
+ cairo_rectangle_int_t clip_rect;
+
+ clip_rect.x = floor (rect->x);
+ clip_rect.y = floor (rect->y);
+ clip_rect.width = ceil (rect->x + rect->width) - clip_rect.x;
+ clip_rect.height = ceil (rect->y + rect->height) - clip_rect.y;
+
+ if (cairo_region_union_rectangle (region, &clip_rect) != CAIRO_STATUS_SUCCESS)
+ {
+ cairo_region_destroy (region);
+ region = NULL;
+ break;
+ }
+ }
+
+ cairo_rectangle_list_destroy (list);
+ return region;
+}
+
+/* Expose handler for the canvas */
+static gboolean
+eel_canvas_draw (GtkWidget *widget,
+ cairo_t *cr)
+{
+ EelCanvas *canvas = EEL_CANVAS (widget);
+ GdkWindow *bin_window;
+ cairo_region_t *region;
+
+ if (!gdk_cairo_get_clip_rectangle (cr, NULL))
+ {
+ return FALSE;
+ }
+
+ bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (widget));
+
+ if (!gtk_cairo_should_draw_window (cr, bin_window))
+ {
+ return FALSE;
+ }
+
+ cairo_save (cr);
+
+ gtk_cairo_transform_to_window (cr, widget, bin_window);
+
+ region = eel_cairo_get_clip_region (cr);
+ if (region == NULL)
+ {
+ cairo_restore (cr);
+ return FALSE;
+ }
+
+#ifdef VERBOSE
+ g_print ("Draw\n");
+#endif
+ /* If there are any outstanding items that need updating, do them now */
+ if (canvas->idle_id)
+ {
+ g_source_remove (canvas->idle_id);
+ canvas->idle_id = 0;
+ }
+ if (canvas->need_update)
+ {
+ g_return_val_if_fail (!canvas->doing_update, FALSE);
+
+ canvas->doing_update = TRUE;
+ eel_canvas_item_invoke_update (canvas->root, 0, 0, 0);
+
+ g_return_val_if_fail (canvas->doing_update, FALSE);
+
+ canvas->doing_update = FALSE;
+
+ canvas->need_update = FALSE;
+ }
+
+ if (canvas->root->flags & EEL_CANVAS_ITEM_MAPPED)
+ {
+ EEL_CANVAS_ITEM_GET_CLASS (canvas->root)->draw (canvas->root, cr, region);
+ }
+
+ cairo_restore (cr);
+
+ /* Chain up to get exposes on child widgets */
+ if (GTK_WIDGET_CLASS (canvas_parent_class)->draw)
+ {
+ GTK_WIDGET_CLASS (canvas_parent_class)->draw (widget, cr);
+ }
+
+ cairo_region_destroy (region);
+ return FALSE;
+}
+
+static void
+do_update (EelCanvas *canvas)
+{
+ /* Cause the update if necessary */
+
+update_again:
+ if (canvas->need_update)
+ {
+ g_return_if_fail (!canvas->doing_update);
+
+ canvas->doing_update = TRUE;
+ eel_canvas_item_invoke_update (canvas->root, 0, 0, 0);
+
+ g_return_if_fail (canvas->doing_update);
+
+ canvas->doing_update = FALSE;
+
+ canvas->need_update = FALSE;
+ }
+
+ /* Pick new current item */
+
+ while (canvas->need_repick)
+ {
+ canvas->need_repick = FALSE;
+ pick_current_item (canvas, &canvas->pick_event);
+ }
+
+ /* it is possible that during picking we emitted an event in which
+ * the user then called some function which then requested update
+ * of something. Without this we'd be left in a state where
+ * need_update would have been left TRUE and the canvas would have
+ * been left unpainted. */
+ if (canvas->need_update)
+ {
+ goto update_again;
+ }
+}
+
+/* Idle handler for the canvas. It deals with pending updates and redraws. */
+static gint
+idle_handler (gpointer data)
+{
+ EelCanvas *canvas;
+
+ canvas = EEL_CANVAS (data);
+ do_update (canvas);
+
+ /* Reset idle id */
+ canvas->idle_id = 0;
+
+ return FALSE;
+}
+
+/* Convenience function to add an idle handler to a canvas */
+static void
+add_idle (EelCanvas *canvas)
+{
+ if (!canvas->idle_id)
+ {
+ /* We let the update idle handler have higher priority
+ * than the redraw idle handler so the canvas state
+ * will be updated during the expose event. canvas in
+ * expose_event.
+ */
+ canvas->idle_id = g_idle_add_full (GDK_PRIORITY_REDRAW - 20,
+ idle_handler, canvas, NULL);
+ }
+}
+
+/**
+ * eel_canvas_root:
+ * @canvas: A canvas.
+ *
+ * Queries the root group of a canvas.
+ *
+ * Return value: The root group of the specified canvas.
+ **/
+EelCanvasGroup *
+eel_canvas_root (EelCanvas *canvas)
+{
+ g_return_val_if_fail (EEL_IS_CANVAS (canvas), NULL);
+
+ return EEL_CANVAS_GROUP (canvas->root);
+}
+
+
+/**
+ * eel_canvas_set_scroll_region:
+ * @canvas: A canvas.
+ * @x1: Leftmost limit of the scrolling region.
+ * @y1: Upper limit of the scrolling region.
+ * @x2: Rightmost limit of the scrolling region.
+ * @y2: Lower limit of the scrolling region.
+ *
+ * Sets the scrolling region of a canvas to the specified rectangle. The canvas
+ * will then be able to scroll only within this region. The view of the canvas
+ * is adjusted as appropriate to display as much of the new region as possible.
+ **/
+void
+eel_canvas_set_scroll_region (EelCanvas *canvas,
+ double x1,
+ double y1,
+ double x2,
+ double y2)
+{
+ double wxofs, wyofs;
+ int xofs, yofs;
+ GtkAdjustment *vadjustment, *hadjustment;
+
+ g_return_if_fail (EEL_IS_CANVAS (canvas));
+
+ if ((canvas->scroll_x1 == x1) && (canvas->scroll_y1 == y1) &&
+ (canvas->scroll_x2 == x2) && (canvas->scroll_y2 == y2))
+ {
+ return;
+ }
+
+ /*
+ * Set the new scrolling region. If possible, do not move the visible contents of the
+ * canvas.
+ */
+ hadjustment = gtk_scrollable_get_hadjustment (GTK_SCROLLABLE (canvas));
+ vadjustment = gtk_scrollable_get_vadjustment (GTK_SCROLLABLE (canvas));
+
+ eel_canvas_c2w (canvas,
+ gtk_adjustment_get_value (hadjustment) + canvas->zoom_xofs,
+ gtk_adjustment_get_value (vadjustment) + canvas->zoom_yofs,
+ /*canvas->zoom_xofs,
+ * canvas->zoom_yofs,*/
+ &wxofs, &wyofs);
+
+ canvas->scroll_x1 = x1;
+ canvas->scroll_y1 = y1;
+ canvas->scroll_x2 = x2;
+ canvas->scroll_y2 = y2;
+
+ eel_canvas_w2c (canvas, wxofs, wyofs, &xofs, &yofs);
+
+ scroll_to (canvas, xofs, yofs);
+
+ canvas->need_repick = TRUE;
+
+ if (!(canvas->root->flags & EEL_CANVAS_ITEM_NEED_DEEP_UPDATE))
+ {
+ canvas->root->flags |= EEL_CANVAS_ITEM_NEED_DEEP_UPDATE;
+ eel_canvas_request_update (canvas);
+ }
+}
+
+
+/**
+ * eel_canvas_get_scroll_region:
+ * @canvas: A canvas.
+ * @x1: Leftmost limit of the scrolling region (return value).
+ * @y1: Upper limit of the scrolling region (return value).
+ * @x2: Rightmost limit of the scrolling region (return value).
+ * @y2: Lower limit of the scrolling region (return value).
+ *
+ * Queries the scrolling region of a canvas.
+ **/
+void
+eel_canvas_get_scroll_region (EelCanvas *canvas,
+ double *x1,
+ double *y1,
+ double *x2,
+ double *y2)
+{
+ g_return_if_fail (EEL_IS_CANVAS (canvas));
+
+ if (x1)
+ {
+ *x1 = canvas->scroll_x1;
+ }
+
+ if (y1)
+ {
+ *y1 = canvas->scroll_y1;
+ }
+
+ if (x2)
+ {
+ *x2 = canvas->scroll_x2;
+ }
+
+ if (y2)
+ {
+ *y2 = canvas->scroll_y2;
+ }
+}
+
+/**
+ * eel_canvas_set_pixels_per_unit:
+ * @canvas: A canvas.
+ * @n: The number of pixels that correspond to one canvas unit.
+ *
+ * Sets the zooming factor of a canvas by specifying the number of pixels that
+ * correspond to one canvas unit.
+ **/
+void
+eel_canvas_set_pixels_per_unit (EelCanvas *canvas,
+ double n)
+{
+ GtkWidget *widget;
+ double cx, cy;
+ int x1, y1;
+ int center_x, center_y;
+ GdkWindow *window;
+ GdkWindowAttr attributes;
+ gint attributes_mask;
+ GtkAllocation allocation;
+ GtkAdjustment *vadjustment, *hadjustment;
+
+ g_return_if_fail (EEL_IS_CANVAS (canvas));
+ g_return_if_fail (n > EEL_CANVAS_EPSILON);
+
+ widget = GTK_WIDGET (canvas);
+
+ gtk_widget_get_allocation (widget, &allocation);
+ center_x = allocation.width / 2;
+ center_y = allocation.height / 2;
+
+ /* Find the coordinates of the screen center in units. */
+ hadjustment = gtk_scrollable_get_hadjustment (GTK_SCROLLABLE (canvas));
+ vadjustment = gtk_scrollable_get_vadjustment (GTK_SCROLLABLE (canvas));
+ cx = (gtk_adjustment_get_value (hadjustment) + center_x) / canvas->pixels_per_unit + canvas->scroll_x1 + canvas->zoom_xofs;
+ cy = (gtk_adjustment_get_value (vadjustment) + center_y) / canvas->pixels_per_unit + canvas->scroll_y1 + canvas->zoom_yofs;
+
+ /* Now calculate the new offset of the upper left corner. (round not truncate) */
+ x1 = ((cx - canvas->scroll_x1) * n) - center_x + .5;
+ y1 = ((cy - canvas->scroll_y1) * n) - center_y + .5;
+
+ canvas->pixels_per_unit = n;
+
+ if (!(canvas->root->flags & EEL_CANVAS_ITEM_NEED_DEEP_UPDATE))
+ {
+ canvas->root->flags |= EEL_CANVAS_ITEM_NEED_DEEP_UPDATE;
+ eel_canvas_request_update (canvas);
+ }
+
+ /* Map a background None window over the bin_window to avoid
+ * scrolling the window scroll causing exposes.
+ */
+ window = NULL;
+ if (gtk_widget_get_mapped (widget))
+ {
+ attributes.window_type = GDK_WINDOW_CHILD;
+ gtk_widget_get_allocation (widget, &allocation);
+ attributes.x = allocation.x;
+ attributes.y = allocation.y;
+ attributes.width = allocation.width;
+ attributes.height = allocation.height;
+ attributes.wclass = GDK_INPUT_OUTPUT;
+ attributes.visual = gtk_widget_get_visual (widget);
+ attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
+
+ attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
+
+ window = gdk_window_new (gtk_widget_get_parent_window (widget),
+ &attributes, attributes_mask);
+ gdk_window_set_user_data (window, widget);
+
+ gdk_window_show (window);
+ }
+
+ scroll_to (canvas, x1, y1);
+
+ /* If we created a an overlapping background None window, remove it how.
+ *
+ * TODO: We would like to temporarily set the bin_window background to
+ * None to avoid clearing the bin_window to the background, but gdk doesn't
+ * expose enought to let us do this, so we get a flash-effect here. At least
+ * it looks better than scroll + expose.
+ */
+ if (window != NULL)
+ {
+ gdk_window_hide (window);
+ gdk_window_set_user_data (window, NULL);
+ gdk_window_destroy (window);
+ }
+
+ canvas->need_repick = TRUE;
+}
+
+/**
+ * eel_canvas_get_scroll_offsets:
+ * @canvas: A canvas.
+ * @cx: Horizontal scrolling offset (return value).
+ * @cy: Vertical scrolling offset (return value).
+ *
+ * Queries the scrolling offsets of a canvas. The values are returned in canvas
+ * pixel units.
+ **/
+void
+eel_canvas_get_scroll_offsets (EelCanvas *canvas,
+ int *cx,
+ int *cy)
+{
+ GtkAdjustment *vadjustment, *hadjustment;
+
+ g_return_if_fail (EEL_IS_CANVAS (canvas));
+
+ hadjustment = gtk_scrollable_get_hadjustment (GTK_SCROLLABLE (canvas));
+ vadjustment = gtk_scrollable_get_vadjustment (GTK_SCROLLABLE (canvas));
+
+ if (cx)
+ {
+ *cx = gtk_adjustment_get_value (hadjustment);
+ }
+
+ if (cy)
+ {
+ *cy = gtk_adjustment_get_value (vadjustment);
+ }
+}
+
+/* Queues an update of the canvas */
+static void
+eel_canvas_request_update (EelCanvas *canvas)
+{
+ EEL_CANVAS_GET_CLASS (canvas)->request_update (canvas);
+}
+
+static void
+eel_canvas_request_update_real (EelCanvas *canvas)
+{
+ canvas->need_update = TRUE;
+ add_idle (canvas);
+}
+
+/**
+ * eel_canvas_request_redraw:
+ * @canvas: A canvas.
+ * @x1: Leftmost coordinate of the rectangle to be redrawn.
+ * @y1: Upper coordinate of the rectangle to be redrawn.
+ * @x2: Rightmost coordinate of the rectangle to be redrawn, plus 1.
+ * @y2: Lower coordinate of the rectangle to be redrawn, plus 1.
+ *
+ * Convenience function that informs a canvas that the specified rectangle needs
+ * to be repainted. The rectangle includes @x1 and @y1, but not @x2 and @y2.
+ * To be used only by item implementations.
+ **/
+void
+eel_canvas_request_redraw (EelCanvas *canvas,
+ int x1,
+ int y1,
+ int x2,
+ int y2)
+{
+ GdkRectangle bbox;
+
+ g_return_if_fail (EEL_IS_CANVAS (canvas));
+
+ if (!gtk_widget_is_drawable (GTK_WIDGET (canvas))
+ || (x1 >= x2) || (y1 >= y2))
+ {
+ return;
+ }
+
+ bbox.x = x1;
+ bbox.y = y1;
+ bbox.width = x2 - x1;
+ bbox.height = y2 - y1;
+
+ gdk_window_invalidate_rect (gtk_layout_get_bin_window (GTK_LAYOUT (canvas)),
+ &bbox, FALSE);
+}
+
+/**
+ * eel_canvas_w2c:
+ * @canvas: A canvas.
+ * @wx: World X coordinate.
+ * @wy: World Y coordinate.
+ * @cx: X pixel coordinate (return value).
+ * @cy: Y pixel coordinate (return value).
+ *
+ * Converts world coordinates into canvas pixel coordinates.
+ **/
+void
+eel_canvas_w2c (EelCanvas *canvas,
+ double wx,
+ double wy,
+ int *cx,
+ int *cy)
+{
+ double zoom;
+
+ g_return_if_fail (EEL_IS_CANVAS (canvas));
+
+ zoom = canvas->pixels_per_unit;
+
+ if (cx)
+ {
+ *cx = floor ((wx - canvas->scroll_x1) * zoom + canvas->zoom_xofs + 0.5);
+ }
+ if (cy)
+ {
+ *cy = floor ((wy - canvas->scroll_y1) * zoom + canvas->zoom_yofs + 0.5);
+ }
+}
+
+/**
+ * eel_canvas_w2c:
+ * @canvas: A canvas.
+ * @world: rectangle in world coordinates.
+ * @canvas: rectangle in canvase coordinates.
+ *
+ * Converts rectangles in world coordinates into canvas pixel coordinates.
+ **/
+void
+eel_canvas_w2c_rect_d (EelCanvas *canvas,
+ double *x1,
+ double *y1,
+ double *x2,
+ double *y2)
+{
+ eel_canvas_w2c_d (canvas,
+ *x1, *y1,
+ x1, y1);
+ eel_canvas_w2c_d (canvas,
+ *x2, *y2,
+ x2, y2);
+}
+
+
+
+/**
+ * eel_canvas_w2c_d:
+ * @canvas: A canvas.
+ * @wx: World X coordinate.
+ * @wy: World Y coordinate.
+ * @cx: X pixel coordinate (return value).
+ * @cy: Y pixel coordinate (return value).
+ *
+ * Converts world coordinates into canvas pixel coordinates. This version
+ * produces coordinates in floating point coordinates, for greater precision.
+ **/
+void
+eel_canvas_w2c_d (EelCanvas *canvas,
+ double wx,
+ double wy,
+ double *cx,
+ double *cy)
+{
+ double zoom;
+
+ g_return_if_fail (EEL_IS_CANVAS (canvas));
+
+ zoom = canvas->pixels_per_unit;
+
+ if (cx)
+ {
+ *cx = (wx - canvas->scroll_x1) * zoom + canvas->zoom_xofs;
+ }
+ if (cy)
+ {
+ *cy = (wy - canvas->scroll_y1) * zoom + canvas->zoom_yofs;
+ }
+}
+
+
+/**
+ * eel_canvas_c2w:
+ * @canvas: A canvas.
+ * @cx: Canvas pixel X coordinate.
+ * @cy: Canvas pixel Y coordinate.
+ * @wx: X world coordinate (return value).
+ * @wy: Y world coordinate (return value).
+ *
+ * Converts canvas pixel coordinates to world coordinates.
+ **/
+void
+eel_canvas_c2w (EelCanvas *canvas,
+ int cx,
+ int cy,
+ double *wx,
+ double *wy)
+{
+ double zoom;
+
+ g_return_if_fail (EEL_IS_CANVAS (canvas));
+
+ zoom = canvas->pixels_per_unit;
+
+ if (wx)
+ {
+ *wx = (cx - canvas->zoom_xofs) / zoom + canvas->scroll_x1;
+ }
+ if (wy)
+ {
+ *wy = (cy - canvas->zoom_yofs) / zoom + canvas->scroll_y1;
+ }
+}
+
+
+/**
+ * eel_canvas_window_to_world:
+ * @canvas: A canvas.
+ * @winx: Window-relative X coordinate.
+ * @winy: Window-relative Y coordinate.
+ * @worldx: X world coordinate (return value).
+ * @worldy: Y world coordinate (return value).
+ *
+ * Converts window-relative coordinates into world coordinates. You can use
+ * this when you need to convert mouse coordinates into world coordinates, for
+ * example.
+ * Window coordinates are really the same as canvas coordinates now, but this
+ * function is here for backwards compatibility reasons.
+ **/
+void
+eel_canvas_window_to_world (EelCanvas *canvas,
+ double winx,
+ double winy,
+ double *worldx,
+ double *worldy)
+{
+ g_return_if_fail (EEL_IS_CANVAS (canvas));
+
+ if (worldx)
+ {
+ *worldx = canvas->scroll_x1 + ((winx - canvas->zoom_xofs)
+ / canvas->pixels_per_unit);
+ }
+
+ if (worldy)
+ {
+ *worldy = canvas->scroll_y1 + ((winy - canvas->zoom_yofs)
+ / canvas->pixels_per_unit);
+ }
+}
+
+
+/**
+ * eel_canvas_world_to_window:
+ * @canvas: A canvas.
+ * @worldx: World X coordinate.
+ * @worldy: World Y coordinate.
+ * @winx: X window-relative coordinate.
+ * @winy: Y window-relative coordinate.
+ *
+ * Converts world coordinates into window-relative coordinates.
+ * Window coordinates are really the same as canvas coordinates now, but this
+ * function is here for backwards compatibility reasons.
+ **/
+void
+eel_canvas_world_to_window (EelCanvas *canvas,
+ double worldx,
+ double worldy,
+ double *winx,
+ double *winy)
+{
+ g_return_if_fail (EEL_IS_CANVAS (canvas));
+
+ if (winx)
+ {
+ *winx = (canvas->pixels_per_unit) * (worldx - canvas->scroll_x1) + canvas->zoom_xofs;
+ }
+
+ if (winy)
+ {
+ *winy = (canvas->pixels_per_unit) * (worldy - canvas->scroll_y1) + canvas->zoom_yofs;
+ }
+}
+
+static gboolean
+boolean_handled_accumulator (GSignalInvocationHint *ihint,
+ GValue *return_accu,
+ const GValue *handler_return,
+ gpointer dummy)
+{
+ gboolean continue_emission;
+ gboolean signal_handled;
+
+ signal_handled = g_value_get_boolean (handler_return);
+ g_value_set_boolean (return_accu, signal_handled);
+ continue_emission = !signal_handled;
+
+ return continue_emission;
+}
+
+static void
+eel_canvas_item_accessible_get_item_extents (EelCanvasItem *item,
+ GdkRectangle *rect)
+{
+ double bx1, bx2, by1, by2;
+ gint scroll_x, scroll_y;
+ gint x1, x2, y1, y2;
+
+ eel_canvas_item_get_bounds (item, &bx1, &by1, &bx2, &by2);
+ eel_canvas_w2c_rect_d (item->canvas, &bx1, &by1, &bx2, &by2);
+ eel_canvas_get_scroll_offsets (item->canvas, &scroll_x, &scroll_y);
+ x1 = floor (bx1 + .5);
+ y1 = floor (by1 + .5);
+ x2 = floor (bx2 + .5);
+ y2 = floor (by2 + .5);
+ rect->x = x1 - scroll_x;
+ rect->y = y1 - scroll_y;
+ rect->width = x2 - x1;
+ rect->height = y2 - y1;
+}
+
+static gboolean
+eel_canvas_item_accessible_is_item_in_window (EelCanvasItem *item,
+ GdkRectangle *rect)
+{
+ GtkWidget *widget;
+ gboolean retval;
+
+ widget = GTK_WIDGET (item->canvas);
+ if (gtk_widget_get_window (widget))
+ {
+ int window_width, window_height;
+
+ gdk_window_get_geometry (gtk_widget_get_window (widget), NULL, NULL,
+ &window_width, &window_height);
+ /*
+ * Check whether rectangles intersect
+ */
+ if (rect->x + rect->width < 0 ||
+ rect->y + rect->height < 0 ||
+ rect->x > window_width ||
+ rect->y > window_height)
+ {
+ retval = FALSE;
+ }
+ else
+ {
+ retval = TRUE;
+ }
+ }
+ else
+ {
+ retval = FALSE;
+ }
+ return retval;
+}
+
+
+static void
+eel_canvas_item_accessible_get_extents (AtkComponent *component,
+ gint *x,
+ gint *y,
+ gint *width,
+ gint *height,
+ AtkCoordType coord_type)
+{
+ AtkGObjectAccessible *atk_gobj;
+ GObject *obj;
+ EelCanvasItem *item;
+ gint window_x, window_y;
+ gint toplevel_x, toplevel_y;
+ GdkRectangle rect;
+ GdkWindow *window;
+ GtkWidget *canvas;
+
+ atk_gobj = ATK_GOBJECT_ACCESSIBLE (component);
+ obj = atk_gobject_accessible_get_object (atk_gobj);
+
+ if (obj == NULL)
+ {
+ /* item is defunct */
+ return;
+ }
+
+ /* Get the CanvasItem */
+ item = EEL_CANVAS_ITEM (obj);
+
+ /* If this item has no parent canvas, something's broken */
+ g_return_if_fail (GTK_IS_WIDGET (item->canvas));
+
+ eel_canvas_item_accessible_get_item_extents (item, &rect);
+ *width = rect.width;
+ *height = rect.height;
+ if (!eel_canvas_item_accessible_is_item_in_window (item, &rect))
+ {
+ *x = G_MININT;
+ *y = G_MININT;
+ return;
+ }
+
+ canvas = GTK_WIDGET (item->canvas);
+ window = gtk_widget_get_parent_window (canvas);
+ gdk_window_get_origin (window, &window_x, &window_y);
+ *x = rect.x + window_x;
+ *y = rect.y + window_y;
+ if (coord_type == ATK_XY_WINDOW)
+ {
+ window = gdk_window_get_toplevel (gtk_widget_get_window (canvas));
+ gdk_window_get_origin (window, &toplevel_x, &toplevel_y);
+ *x -= toplevel_x;
+ *y -= toplevel_y;
+ }
+ return;
+}
+
+static gint
+eel_canvas_item_accessible_get_mdi_zorder (AtkComponent *component)
+{
+ AtkGObjectAccessible *atk_gobj;
+ GObject *g_obj;
+ EelCanvasItem *item;
+
+ atk_gobj = ATK_GOBJECT_ACCESSIBLE (component);
+ g_obj = atk_gobject_accessible_get_object (atk_gobj);
+ if (g_obj == NULL)
+ {
+ /* Object is defunct */
+ return -1;
+ }
+
+ item = EEL_CANVAS_ITEM (g_obj);
+ if (item->parent)
+ {
+ return g_list_index (EEL_CANVAS_GROUP (item->parent)->item_list, item);
+ }
+ else
+ {
+ g_return_val_if_fail (item->canvas->root == item, -1);
+ return 0;
+ }
+}
+
+static gboolean
+eel_canvas_item_accessible_grab_focus (AtkComponent *component)
+{
+ AtkGObjectAccessible *atk_gobj;
+ GObject *obj;
+ EelCanvasItem *item;
+ GtkWidget *toplevel;
+
+ atk_gobj = ATK_GOBJECT_ACCESSIBLE (component);
+ obj = atk_gobject_accessible_get_object (atk_gobj);
+
+ item = EEL_CANVAS_ITEM (obj);
+ if (item == NULL)
+ {
+ /* item is defunct */
+ return FALSE;
+ }
+
+ eel_canvas_item_grab_focus (item);
+ toplevel = gtk_widget_get_toplevel (GTK_WIDGET (item->canvas));
+ if (gtk_widget_is_toplevel (toplevel))
+ {
+ gtk_window_present (GTK_WINDOW (toplevel));
+ }
+
+ return TRUE;
+}
+
+static void
+eel_canvas_item_accessible_component_interface_init (AtkComponentIface *iface)
+{
+ g_return_if_fail (iface != NULL);
+
+ iface->get_extents = eel_canvas_item_accessible_get_extents;
+ iface->get_mdi_zorder = eel_canvas_item_accessible_get_mdi_zorder;
+ iface->grab_focus = eel_canvas_item_accessible_grab_focus;
+}
+
+static gboolean
+eel_canvas_item_accessible_is_item_on_screen (EelCanvasItem *item)
+{
+ GdkRectangle rect;
+
+ eel_canvas_item_accessible_get_item_extents (item, &rect);
+ return eel_canvas_item_accessible_is_item_in_window (item, &rect);
+}
+
+static void
+eel_canvas_item_accessible_initialize (AtkObject *obj,
+ gpointer data)
+{
+ if (ATK_OBJECT_CLASS (accessible_item_parent_class)->initialize != NULL)
+ {
+ ATK_OBJECT_CLASS (accessible_item_parent_class)->initialize (obj, data);
+ }
+ g_object_set_data (G_OBJECT (obj), "atk-component-layer",
+ GINT_TO_POINTER (ATK_LAYER_MDI));
+}
+
+static AtkStateSet *
+eel_canvas_item_accessible_ref_state_set (AtkObject *accessible)
+{
+ AtkGObjectAccessible *atk_gobj;
+ GObject *obj;
+ EelCanvasItem *item;
+ AtkStateSet *state_set;
+
+ state_set = ATK_OBJECT_CLASS (accessible_item_parent_class)->ref_state_set (accessible);
+ atk_gobj = ATK_GOBJECT_ACCESSIBLE (accessible);
+ obj = atk_gobject_accessible_get_object (atk_gobj);
+
+ item = EEL_CANVAS_ITEM (obj);
+ if (item == NULL)
+ {
+ atk_state_set_add_state (state_set, ATK_STATE_DEFUNCT);
+ }
+ else
+ {
+ if (item->flags & EEL_CANVAS_ITEM_VISIBLE)
+ {
+ atk_state_set_add_state (state_set, ATK_STATE_VISIBLE);
+
+ if (eel_canvas_item_accessible_is_item_on_screen (item))
+ {
+ atk_state_set_add_state (state_set, ATK_STATE_SHOWING);
+ }
+ }
+ if (gtk_widget_get_can_focus (GTK_WIDGET (item->canvas)))
+ {
+ atk_state_set_add_state (state_set, ATK_STATE_FOCUSABLE);
+
+ if (item->canvas->focused_item == item)
+ {
+ atk_state_set_add_state (state_set, ATK_STATE_FOCUSED);
+ }
+ }
+ }
+
+ return state_set;
+}
+
+static void
+eel_canvas_item_accessible_class_init (EelCanvasItemAccessibleClass *klass)
+{
+ AtkObjectClass *atk_class = ATK_OBJECT_CLASS (klass);
+
+ accessible_item_parent_class = g_type_class_peek_parent (klass);
+
+ atk_class->initialize = eel_canvas_item_accessible_initialize;
+ atk_class->ref_state_set = eel_canvas_item_accessible_ref_state_set;
+}
+
+static void
+eel_canvas_item_accessible_init (EelCanvasItemAccessible *self)
+{
+}
+
+G_DEFINE_TYPE_WITH_CODE (EelCanvasItemAccessible,
+ eel_canvas_item_accessible,
+ ATK_TYPE_GOBJECT_ACCESSIBLE,
+ G_IMPLEMENT_INTERFACE (ATK_TYPE_COMPONENT,
+ eel_canvas_item_accessible_component_interface_init));
+
+static GType eel_canvas_item_accessible_factory_get_type (void);
+
+typedef AtkObjectFactory EelCanvasItemAccessibleFactory;
+typedef AtkObjectFactoryClass EelCanvasItemAccessibleFactoryClass;
+G_DEFINE_TYPE (EelCanvasItemAccessibleFactory, eel_canvas_item_accessible_factory,
+ ATK_TYPE_OBJECT_FACTORY)
+
+static GType
+eel_canvas_item_accessible_factory_get_accessible_type (void)
+{
+ return eel_canvas_item_accessible_get_type ();
+}
+
+static AtkObject *
+eel_canvas_item_accessible_factory_create_accessible (GObject *for_object)
+{
+ AtkObject *accessible;
+
+ accessible = g_object_new (eel_canvas_item_accessible_get_type (), NULL);
+ atk_object_initialize (accessible, for_object);
+ return accessible;
+}
+
+static void
+eel_canvas_item_accessible_factory_init (EelCanvasItemAccessibleFactory *self)
+{
+}
+
+static void
+eel_canvas_item_accessible_factory_class_init (AtkObjectFactoryClass *klass)
+{
+ klass->create_accessible = eel_canvas_item_accessible_factory_create_accessible;
+ klass->get_accessible_type = eel_canvas_item_accessible_factory_get_accessible_type;
+}
+
+/* Class initialization function for EelCanvasItemClass */
+static void
+eel_canvas_item_class_init (EelCanvasItemClass *klass)
+{
+ GObjectClass *gobject_class = (GObjectClass *) klass;
+
+ item_parent_class = g_type_class_peek_parent (klass);
+
+ gobject_class->set_property = eel_canvas_item_set_property;
+ gobject_class->get_property = eel_canvas_item_get_property;
+ gobject_class->dispose = eel_canvas_item_dispose;
+
+ g_object_class_install_property
+ (gobject_class, ITEM_PROP_VISIBLE,
+ g_param_spec_boolean ("visible", NULL, NULL,
+ TRUE,
+ G_PARAM_READWRITE));
+
+ item_signals[ITEM_EVENT] =
+ g_signal_new ("event",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (EelCanvasItemClass, event),
+ boolean_handled_accumulator, NULL,
+ g_cclosure_marshal_generic,
+ G_TYPE_BOOLEAN, 1,
+ GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
+
+ item_signals[ITEM_DESTROY] =
+ g_signal_new ("destroy",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_CLEANUP | G_SIGNAL_NO_RECURSE | G_SIGNAL_NO_HOOKS,
+ G_STRUCT_OFFSET (EelCanvasItemClass, destroy),
+ NULL, NULL,
+ g_cclosure_marshal_VOID__VOID,
+ G_TYPE_NONE, 0);
+
+ klass->realize = eel_canvas_item_realize;
+ klass->unrealize = eel_canvas_item_unrealize;
+ klass->map = eel_canvas_item_map;
+ klass->unmap = eel_canvas_item_unmap;
+ klass->update = eel_canvas_item_update;
+
+ atk_registry_set_factory_type (atk_get_default_registry (),
+ EEL_TYPE_CANVAS_ITEM,
+ eel_canvas_item_accessible_factory_get_type ());
+}
diff --git a/eel/eel-canvas.h b/eel/eel-canvas.h
new file mode 100644
index 0000000..f406ca0
--- /dev/null
+++ b/eel/eel-canvas.h
@@ -0,0 +1,497 @@
+/*
+ * Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation
+ * All rights reserved.
+ *
+ * This file is part of the Gnome Library.
+ *
+ * The Gnome Library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Gnome Library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with the Gnome Library; see the file COPYING.LIB. If not,
+ * see <http://www.gnu.org/licenses/>.
+ */
+/*
+ @NOTATION@
+ */
+/* EelCanvas widget - Tk-like canvas widget for Gnome
+ *
+ * EelCanvas is basically a port of the Tk toolkit's most excellent canvas
+ * widget. Tk is copyrighted by the Regents of the University of California,
+ * Sun Microsystems, and other parties.
+ *
+ *
+ * Authors: Federico Mena <federico@nuclecu.unam.mx>
+ * Raph Levien <raph@gimp.org>
+ */
+
+#pragma once
+
+#include <gtk/gtk.h>
+#include <gtk/gtk-a11y.h>
+#include <gdk/gdk.h>
+#include <stdarg.h>
+
+G_BEGIN_DECLS
+
+
+/* "Small" value used by canvas stuff */
+#define EEL_CANVAS_EPSILON 1e-10
+
+
+/* Macros for building colors that fit in a 32-bit integer. The values are in
+ * [0, 255].
+ */
+
+#define EEL_CANVAS_COLOR(r, g, b) ((((int) (r) & 0xff) << 24) \
+ | (((int) (g) & 0xff) << 16) \
+ | (((int) (b) & 0xff) << 8) \
+ | 0xff)
+
+#define EEL_CANVAS_COLOR_A(r, g, b, a) ((((int) (r) & 0xff) << 24) \
+ | (((int) (g) & 0xff) << 16) \
+ | (((int) (b) & 0xff) << 8) \
+ | ((int) (a) & 0xff))
+
+
+typedef struct _EelCanvas EelCanvas;
+typedef struct _EelCanvasClass EelCanvasClass;
+typedef struct _EelCanvasItem EelCanvasItem;
+typedef struct _EelCanvasItemClass EelCanvasItemClass;
+typedef struct _EelCanvasGroup EelCanvasGroup;
+typedef struct _EelCanvasGroupClass EelCanvasGroupClass;
+
+
+/* EelCanvasItem - base item class for canvas items
+ *
+ * All canvas items are derived from EelCanvasItem. The only information a
+ * EelCanvasItem contains is its parent canvas, its parent canvas item group,
+ * and its bounding box in world coordinates.
+ *
+ * Items inside a canvas are organized in a tree of EelCanvasItemGroup nodes
+ * and EelCanvasItem leaves. Each canvas has a single root group, which can
+ * be obtained with the eel_canvas_get_root() function.
+ *
+ * The abstract EelCanvasItem class does not have any configurable or
+ * queryable attributes.
+ */
+
+/* Object flags for items */
+enum {
+ EEL_CANVAS_ITEM_REALIZED = 1 << 4,
+ EEL_CANVAS_ITEM_MAPPED = 1 << 5,
+ EEL_CANVAS_ITEM_ALWAYS_REDRAW = 1 << 6,
+ EEL_CANVAS_ITEM_VISIBLE = 1 << 7,
+ EEL_CANVAS_ITEM_NEED_UPDATE = 1 << 8,
+ EEL_CANVAS_ITEM_NEED_DEEP_UPDATE = 1 << 9
+};
+
+/* Update flags for items */
+enum {
+ EEL_CANVAS_UPDATE_REQUESTED = 1 << 0,
+ EEL_CANVAS_UPDATE_DEEP = 1 << 1
+};
+
+#define EEL_TYPE_CANVAS_ITEM (eel_canvas_item_get_type ())
+#define EEL_CANVAS_ITEM(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), EEL_TYPE_CANVAS_ITEM, EelCanvasItem))
+#define EEL_CANVAS_ITEM_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), EEL_TYPE_CANVAS_ITEM, EelCanvasItemClass))
+#define EEL_IS_CANVAS_ITEM(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), EEL_TYPE_CANVAS_ITEM))
+#define EEL_IS_CANVAS_ITEM_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EEL_TYPE_CANVAS_ITEM))
+#define EEL_CANVAS_ITEM_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), EEL_TYPE_CANVAS_ITEM, EelCanvasItemClass))
+
+
+struct _EelCanvasItem {
+ GInitiallyUnowned object;
+
+ /* Parent canvas for this item */
+ EelCanvas *canvas;
+
+ /* Parent canvas group for this item (a EelCanvasGroup) */
+ EelCanvasItem *parent;
+
+ /* Bounding box for this item (in canvas coordinates) */
+ double x1, y1, x2, y2;
+
+ /* Object flags */
+ guint flags;
+};
+
+struct _EelCanvasItemClass {
+ GInitiallyUnownedClass parent_class;
+
+ void (* destroy) (EelCanvasItem *item);
+
+ /* Tell the item to update itself. The flags are from the update flags
+ * defined above. The item should update its internal state from its
+ * queued state, and recompute and request its repaint area. The
+ * update method also recomputes the bounding box of the item.
+ */
+ void (* update) (EelCanvasItem *item, double i2w_dx, double i2w_dy, int flags);
+
+ /* Realize an item -- create GCs, etc. */
+ void (* realize) (EelCanvasItem *item);
+
+ /* Unrealize an item */
+ void (* unrealize) (EelCanvasItem *item);
+
+ /* Map an item - normally only need by items with their own GdkWindows */
+ void (* map) (EelCanvasItem *item);
+
+ /* Unmap an item */
+ void (* unmap) (EelCanvasItem *item);
+
+ /* Draw an item of this type. (x, y) are the upper-left canvas pixel
+ * coordinates of the drawable, a temporary pixmap, where things get
+ * drawn. (width, height) are the dimensions of the drawable.
+ */
+ void (* draw) (EelCanvasItem *item, cairo_t *cr, cairo_region_t *region);
+
+ /* Calculate the distance from an item to the specified point. It also
+ * returns a canvas item which is the item itself in the case of the
+ * object being an actual leaf item, or a child in case of the object
+ * being a canvas group. (cx, cy) are the canvas pixel coordinates that
+ * correspond to the item-relative coordinates (x, y).
+ */
+ double (* point) (EelCanvasItem *item, double x, double y, int cx, int cy,
+ EelCanvasItem **actual_item);
+
+ void (* translate) (EelCanvasItem *item, double dx, double dy);
+
+ /* Fetch the item's bounding box (need not be exactly tight). This
+ * should be in item-relative coordinates.
+ */
+ void (* bounds) (EelCanvasItem *item, double *x1, double *y1, double *x2, double *y2);
+
+ /* Signal: an event ocurred for an item of this type. The (x, y)
+ * coordinates are in the canvas world coordinate system.
+ */
+ gboolean (* event) (EelCanvasItem *item, GdkEvent *event);
+
+ /* Reserved for future expansion */
+ gpointer spare_vmethods [4];
+};
+
+
+/* Standard Gtk function */
+GType eel_canvas_item_get_type (void) G_GNUC_CONST;
+
+/* Create a canvas item using the standard Gtk argument mechanism. The item is
+ * automatically inserted at the top of the specified canvas group. The last
+ * argument must be a NULL pointer.
+ */
+EelCanvasItem *eel_canvas_item_new (EelCanvasGroup *parent, GType type,
+ const gchar *first_arg_name, ...);
+
+void eel_canvas_item_destroy (EelCanvasItem *item);
+
+/* Configure an item using the standard Gtk argument mechanism. The last
+ * argument must be a NULL pointer.
+ */
+void eel_canvas_item_set (EelCanvasItem *item, const gchar *first_arg_name, ...);
+
+/* Move an item by the specified amount */
+void eel_canvas_item_move (EelCanvasItem *item, double dx, double dy);
+
+/* Raise an item in the z-order of its parent group by the specified number of
+ * positions.
+ */
+void eel_canvas_item_raise (EelCanvasItem *item, int positions);
+
+/* Lower an item in the z-order of its parent group by the specified number of
+ * positions.
+ */
+void eel_canvas_item_lower (EelCanvasItem *item, int positions);
+
+/* Raise an item to the top of its parent group's z-order. */
+void eel_canvas_item_raise_to_top (EelCanvasItem *item);
+
+/* Lower an item to the bottom of its parent group's z-order */
+void eel_canvas_item_lower_to_bottom (EelCanvasItem *item);
+
+/* Send an item behind another item */
+void eel_canvas_item_send_behind (EelCanvasItem *item,
+ EelCanvasItem *behind_item);
+
+
+/* Show an item (make it visible). If the item is already shown, it has no
+ * effect.
+ */
+void eel_canvas_item_show (EelCanvasItem *item);
+
+/* Hide an item (make it invisible). If the item is already invisible, it has
+ * no effect.
+ */
+void eel_canvas_item_hide (EelCanvasItem *item);
+
+/* Grab the seat for the specified item. Only the events in event_mask will be
+ * reported. If cursor is non-NULL, it will be used during the duration of the
+ * grab. event is the event, triggering the grab. Returns the same values as gdk_seat_grab().
+ */
+GdkGrabStatus eel_canvas_item_grab (EelCanvasItem *item,
+ GdkEventMask event_mask,
+ GdkCursor *cursor,
+ const GdkEvent* event);
+
+/* Ungrabs the seat -- the specified item must be the same that was passed to
+ * eel_canvas_item_grab().
+ */
+void eel_canvas_item_ungrab (EelCanvasItem *item);
+
+/* These functions convert from a coordinate system to another. "w" is world
+ * coordinates and "i" is item coordinates.
+ */
+void eel_canvas_item_i2w (EelCanvasItem *item, double *x, double *y);
+
+/* Fetch the bounding box of the item. The bounding box may not be exactly
+ * tight, but the canvas items will do the best they can. The returned bounding
+ * box is in the coordinate system of the item's parent.
+ */
+void eel_canvas_item_get_bounds (EelCanvasItem *item,
+ double *x1, double *y1, double *x2, double *y2);
+
+/* Request that the update method eventually get called. This should be used
+ * only by item implementations.
+ */
+void eel_canvas_item_request_update (EelCanvasItem *item);
+
+/* Request a redraw of the bounding box of the canvas item */
+void eel_canvas_item_request_redraw (EelCanvasItem *item);
+
+/* EelCanvasGroup - a group of canvas items
+ *
+ * A group is a node in the hierarchical tree of groups/items inside a canvas.
+ * Groups serve to give a logical structure to the items.
+ *
+ * Consider a circuit editor application that uses the canvas for its schematic
+ * display. Hierarchically, there would be canvas groups that contain all the
+ * components needed for an "adder", for example -- this includes some logic
+ * gates as well as wires. You can move stuff around in a convenient way by
+ * doing a eel_canvas_item_move() of the hierarchical groups -- to move an
+ * adder, simply move the group that represents the adder.
+ *
+ * The following arguments are available:
+ *
+ * name type read/write description
+ * --------------------------------------------------------------------------------
+ * x double RW X coordinate of group's origin
+ * y double RW Y coordinate of group's origin
+ */
+
+
+#define EEL_TYPE_CANVAS_GROUP (eel_canvas_group_get_type ())
+#define EEL_CANVAS_GROUP(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), EEL_TYPE_CANVAS_GROUP, EelCanvasGroup))
+#define EEL_CANVAS_GROUP_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), EEL_TYPE_CANVAS_GROUP, EelCanvasGroupClass))
+#define EEL_IS_CANVAS_GROUP(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), EEL_TYPE_CANVAS_GROUP))
+#define EEL_IS_CANVAS_GROUP_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EEL_TYPE_CANVAS_GROUP))
+#define EEL_CANVAS_GROUP_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), EEL_TYPE_CANVAS_GROUP, EelCanvasGroupClass))
+
+
+struct _EelCanvasGroup {
+ EelCanvasItem item;
+
+ double xpos, ypos;
+
+ /* Children of the group */
+ GList *item_list;
+ GList *item_list_end;
+};
+
+struct _EelCanvasGroupClass {
+ EelCanvasItemClass parent_class;
+};
+
+
+/* Standard Gtk function */
+GType eel_canvas_group_get_type (void) G_GNUC_CONST;
+
+
+/*** EelCanvas ***/
+
+
+#define EEL_TYPE_CANVAS (eel_canvas_get_type ())
+#define EEL_CANVAS(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), EEL_TYPE_CANVAS, EelCanvas))
+#define EEL_CANVAS_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), EEL_TYPE_CANVAS, EelCanvasClass))
+#define EEL_IS_CANVAS(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), EEL_TYPE_CANVAS))
+#define EEL_IS_CANVAS_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EEL_TYPE_CANVAS))
+#define EEL_CANVAS_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), EEL_TYPE_CANVAS, EelCanvasClass))
+
+
+struct _EelCanvas {
+ GtkLayout layout;
+
+ /* Root canvas group */
+ EelCanvasItem *root;
+
+ /* The item containing the mouse pointer, or NULL if none */
+ EelCanvasItem *current_item;
+
+ /* Item that is about to become current (used to track deletions and such) */
+ EelCanvasItem *new_current_item;
+
+ /* Item that holds a pointer grab, or NULL if none */
+ EelCanvasItem *grabbed_item;
+
+ /* If non-NULL, the currently focused item */
+ EelCanvasItem *focused_item;
+
+ /* Event on which selection of current item is based */
+ GdkEvent pick_event;
+
+ /* Scrolling region */
+ double scroll_x1, scroll_y1;
+ double scroll_x2, scroll_y2;
+
+ /* Scaling factor to be used for display */
+ double pixels_per_unit;
+
+ /* Idle handler ID */
+ guint idle_id;
+
+ /* Signal handler ID for destruction of the root item */
+ gulong root_destroy_id;
+
+ /* Internal pixel offsets when zoomed out */
+ int zoom_xofs, zoom_yofs;
+
+ /* Last known modifier state, for deferred repick when a button is down */
+ int state;
+
+ /* Event mask specified when grabbing an item */
+ guint grabbed_event_mask;
+
+ /* Tolerance distance for picking items */
+ int close_enough;
+
+ /* Whether the canvas should center the canvas in the middle of
+ * the window if the scroll region is smaller than the window */
+ unsigned int center_scroll_region : 1;
+
+ /* Whether items need update at next idle loop iteration */
+ unsigned int need_update : 1;
+
+ /* Are we in the midst of an update */
+ unsigned int doing_update : 1;
+
+ /* Whether the canvas needs redrawing at the next idle loop iteration */
+ unsigned int need_redraw : 1;
+
+ /* Whether current item will be repicked at next idle loop iteration */
+ unsigned int need_repick : 1;
+
+ /* For use by internal pick_current_item() function */
+ unsigned int left_grabbed_item : 1;
+
+ /* For use by internal pick_current_item() function */
+ unsigned int in_repick : 1;
+};
+
+struct _EelCanvasClass {
+ GtkLayoutClass parent_class;
+
+ /* Private Virtual methods for groping the canvas inside bonobo */
+ void (* request_update) (EelCanvas *canvas);
+
+ /* Reserved for future expansion */
+ gpointer spare_vmethods [4];
+};
+
+
+/* Standard Gtk function */
+GType eel_canvas_get_type (void) G_GNUC_CONST;
+
+/* Creates a new canvas. You should check that the canvas is created with the
+ * proper visual and colormap. Any visual will do unless you intend to insert
+ * gdk_imlib images into it, in which case you should use the gdk_imlib visual.
+ *
+ * You should call eel_canvas_set_scroll_region() soon after calling this
+ * function to set the desired scrolling limits for the canvas.
+ */
+GtkWidget *eel_canvas_new (void);
+
+/* Returns the root canvas item group of the canvas */
+EelCanvasGroup *eel_canvas_root (EelCanvas *canvas);
+
+/* Sets the limits of the scrolling region, in world coordinates */
+void eel_canvas_set_scroll_region (EelCanvas *canvas,
+ double x1, double y1, double x2, double y2);
+
+/* Gets the limits of the scrolling region, in world coordinates */
+void eel_canvas_get_scroll_region (EelCanvas *canvas,
+ double *x1, double *y1, double *x2, double *y2);
+
+/* Sets the number of pixels that correspond to one unit in world coordinates */
+void eel_canvas_set_pixels_per_unit (EelCanvas *canvas, double n);
+
+/* Returns the scroll offsets of the canvas in canvas pixel coordinates. You
+ * can specify NULL for any of the values, in which case that value will not be
+ * queried.
+ */
+void eel_canvas_get_scroll_offsets (EelCanvas *canvas, int *cx, int *cy);
+
+/* For use only by item type implementations. Request that the canvas
+ * eventually redraw the specified region, specified in canvas pixel
+ * coordinates. The region contains (x1, y1) but not (x2, y2).
+ */
+void eel_canvas_request_redraw (EelCanvas *canvas, int x1, int y1, int x2, int y2);
+
+/* These functions convert from a coordinate system to another. "w" is world
+ * coordinates, "c" is canvas pixel coordinates (pixel coordinates that are
+ * (0,0) for the upper-left scrolling limit and something else for the
+ * lower-left scrolling limit).
+ */
+void eel_canvas_w2c_rect_d (EelCanvas *canvas,
+ double *x1, double *y1,
+ double *x2, double *y2);
+void eel_canvas_w2c (EelCanvas *canvas, double wx, double wy, int *cx, int *cy);
+void eel_canvas_w2c_d (EelCanvas *canvas, double wx, double wy, double *cx, double *cy);
+void eel_canvas_c2w (EelCanvas *canvas, int cx, int cy, double *wx, double *wy);
+
+/* This function takes in coordinates relative to the GTK_LAYOUT
+ * (canvas)->bin_window and converts them to world coordinates.
+ * These days canvas coordinates and window coordinates are the same, but
+ * these are left for backwards compat reasons.
+ */
+void eel_canvas_window_to_world (EelCanvas *canvas,
+ double winx, double winy, double *worldx, double *worldy);
+
+/* This is the inverse of eel_canvas_window_to_world() */
+void eel_canvas_world_to_window (EelCanvas *canvas,
+ double worldx, double worldy, double *winx, double *winy);
+
+/* Accessible implementation */
+GType eel_canvas_accessible_get_type (void);
+
+typedef struct _EelCanvasAccessible EelCanvasAccessible;
+struct _EelCanvasAccessible
+{
+ GtkContainerAccessible parent;
+};
+
+typedef struct _EelCanvasAccessibleClass EelCanvasAccessibleClass;
+struct _EelCanvasAccessibleClass
+{
+ GtkContainerAccessibleClass parent_class;
+};
+
+GType eel_canvas_item_accessible_get_type (void);
+
+typedef struct _EelCanvasItemAccessible EelCanvasItemAccessible;
+struct _EelCanvasItemAccessible
+{
+ GtkAccessible parent;
+};
+
+typedef struct _EelCanvasItemAccessibleClass EelCanvasItemAccessibleClass;
+struct _EelCanvasItemAccessibleClass
+{
+ GtkAccessibleClass parent_class;
+};
+
+G_END_DECLS \ No newline at end of file
diff --git a/eel/eel-debug.c b/eel/eel-debug.c
new file mode 100644
index 0000000..f3d94ec
--- /dev/null
+++ b/eel/eel-debug.c
@@ -0,0 +1,105 @@
+/*
+ * eel-debug.c: Eel debugging aids.
+ *
+ * Copyright (C) 2000, 2001 Eazel, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Darin Adler <darin@eazel.com>
+ */
+
+#include <config.h>
+#include "eel-debug.h"
+
+#include <glib.h>
+#include <signal.h>
+#include <stdio.h>
+
+typedef struct
+{
+ gpointer data;
+ GFreeFunc function;
+} ShutdownFunction;
+
+static GList *shutdown_functions;
+
+/* Raise a SIGINT signal to get the attention of the debugger.
+ * When not running under the debugger, we don't want to stop,
+ * so we ignore the signal for just the moment that we raise it.
+ */
+static void
+eel_stop_in_debugger (void)
+{
+ void (*saved_handler) (int);
+
+ saved_handler = signal (SIGINT, SIG_IGN);
+ raise (SIGINT);
+ signal (SIGINT, saved_handler);
+}
+
+/* Stop in the debugger after running the default log handler.
+ * This makes certain kinds of messages stop in the debugger
+ * without making them fatal (you can continue).
+ */
+static void
+log_handler (const char *domain,
+ GLogLevelFlags level,
+ const char *message,
+ gpointer data)
+{
+ g_log_default_handler (domain, level, message, data);
+ if ((level & (G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING)) != 0)
+ {
+ eel_stop_in_debugger ();
+ }
+}
+
+void
+eel_make_warnings_and_criticals_stop_in_debugger (void)
+{
+ g_log_set_default_handler (log_handler, NULL);
+}
+
+void
+eel_debug_shut_down (void)
+{
+ ShutdownFunction *f;
+
+ while (shutdown_functions != NULL)
+ {
+ f = shutdown_functions->data;
+ shutdown_functions = g_list_remove (shutdown_functions, f);
+
+ f->function (f->data);
+ g_free (f);
+ }
+}
+
+void
+eel_debug_call_at_shutdown (EelFunction function)
+{
+ eel_debug_call_at_shutdown_with_data ((GFreeFunc) function, NULL);
+}
+
+void
+eel_debug_call_at_shutdown_with_data (GFreeFunc function,
+ gpointer data)
+{
+ ShutdownFunction *f;
+
+ f = g_new (ShutdownFunction, 1);
+ f->data = data;
+ f->function = function;
+ shutdown_functions = g_list_prepend (shutdown_functions, f);
+}
diff --git a/eel/eel-debug.h b/eel/eel-debug.h
new file mode 100644
index 0000000..5d65932
--- /dev/null
+++ b/eel/eel-debug.h
@@ -0,0 +1,40 @@
+/*
+ eel-debug.h: Eel debugging aids.
+
+ Copyright (C) 2000, 2001 Eazel, Inc.
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with this program; if not, see <http://www.gnu.org/licenses/>.
+
+ Author: Darin Adler <darin@eazel.com>
+*/
+
+#pragma once
+
+#include <glib.h>
+
+G_BEGIN_DECLS
+
+typedef void (* EelFunction) (void);
+
+void eel_make_warnings_and_criticals_stop_in_debugger (void);
+
+/* A way to do cleanup at exit for compatibility with shutdown tools
+ * like the ones in Bonobo.
+ */
+void eel_debug_shut_down (void);
+void eel_debug_call_at_shutdown (EelFunction function);
+void eel_debug_call_at_shutdown_with_data (GFreeFunc function,
+ gpointer data);
+
+G_END_DECLS \ No newline at end of file
diff --git a/eel/eel-glib-extensions.h b/eel/eel-glib-extensions.h
new file mode 100644
index 0000000..3b0ea0d
--- /dev/null
+++ b/eel/eel-glib-extensions.h
@@ -0,0 +1,30 @@
+
+/* eel-glib-extensions.h - interface for new functions that conceptually
+ belong in glib. Perhaps some of these will be
+ actually rolled into glib someday.
+
+ Copyright (C) 2000 Eazel, Inc.
+
+ The Gnome Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The Gnome Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the Gnome Library; see the file COPYING.LIB. If not,
+ see <http://www.gnu.org/licenses/>.
+
+ Authors: John Sullivan <sullivan@eazel.com>
+*/
+
+#pragma once
+
+#include <glib.h>
+
+/* A gboolean variant for bit fields. */
+typedef guint eel_boolean_bit;
diff --git a/eel/eel-graphic-effects.c b/eel/eel-graphic-effects.c
new file mode 100644
index 0000000..06af091
--- /dev/null
+++ b/eel/eel-graphic-effects.c
@@ -0,0 +1,165 @@
+/* Eel - pixbuf manipulation routines for graphical effects.
+ *
+ * Copyright (C) 2000 Eazel, Inc
+ *
+ * Author: Andy Hertzfeld <andy@eazel.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* This file contains pixbuf manipulation routines used for graphical effects like pre-lighting
+ * and selection hilighting */
+
+#include <config.h>
+
+#include "eel-graphic-effects.h"
+#include "eel-glib-extensions.h"
+
+#include <math.h>
+#include <string.h>
+
+/* shared utility to create a new pixbuf from the passed-in one */
+
+static GdkPixbuf *
+create_new_pixbuf (GdkPixbuf *src)
+{
+ g_assert (gdk_pixbuf_get_colorspace (src) == GDK_COLORSPACE_RGB);
+ g_assert ((!gdk_pixbuf_get_has_alpha (src)
+ && gdk_pixbuf_get_n_channels (src) == 3)
+ || (gdk_pixbuf_get_has_alpha (src)
+ && gdk_pixbuf_get_n_channels (src) == 4));
+
+ return gdk_pixbuf_new (gdk_pixbuf_get_colorspace (src),
+ gdk_pixbuf_get_has_alpha (src),
+ gdk_pixbuf_get_bits_per_sample (src),
+ gdk_pixbuf_get_width (src),
+ gdk_pixbuf_get_height (src));
+}
+
+/* utility routine to bump the level of a color component with pinning */
+
+const int HOVER_COMPONENT_ADDITION = 15;
+
+static guchar
+lighten_component (guchar cur_value)
+{
+ int new_value = cur_value;
+ new_value = cur_value + HOVER_COMPONENT_ADDITION;
+ if (new_value > 255)
+ {
+ new_value = 255;
+ }
+ return (guchar) new_value;
+}
+
+GdkPixbuf *
+eel_create_spotlight_pixbuf (GdkPixbuf *src)
+{
+ GdkPixbuf *dest;
+ int i, j;
+ int width, height, has_alpha, src_row_stride, dst_row_stride;
+ guchar *target_pixels, *original_pixels;
+ guchar *pixsrc, *pixdest;
+
+ g_return_val_if_fail (gdk_pixbuf_get_colorspace (src) == GDK_COLORSPACE_RGB, NULL);
+ g_return_val_if_fail ((!gdk_pixbuf_get_has_alpha (src)
+ && gdk_pixbuf_get_n_channels (src) == 3)
+ || (gdk_pixbuf_get_has_alpha (src)
+ && gdk_pixbuf_get_n_channels (src) == 4), NULL);
+ g_return_val_if_fail (gdk_pixbuf_get_bits_per_sample (src) == 8, NULL);
+
+ dest = create_new_pixbuf (src);
+
+ has_alpha = gdk_pixbuf_get_has_alpha (src);
+ width = gdk_pixbuf_get_width (src);
+ height = gdk_pixbuf_get_height (src);
+ dst_row_stride = gdk_pixbuf_get_rowstride (dest);
+ src_row_stride = gdk_pixbuf_get_rowstride (src);
+ target_pixels = gdk_pixbuf_get_pixels (dest);
+ original_pixels = gdk_pixbuf_get_pixels (src);
+
+ for (i = 0; i < height; i++)
+ {
+ pixdest = target_pixels + i * dst_row_stride;
+ pixsrc = original_pixels + i * src_row_stride;
+ for (j = 0; j < width; j++)
+ {
+ *pixdest++ = lighten_component (*pixsrc++);
+ *pixdest++ = lighten_component (*pixsrc++);
+ *pixdest++ = lighten_component (*pixsrc++);
+ if (has_alpha)
+ {
+ *pixdest++ = *pixsrc++;
+ }
+ }
+ }
+ return dest;
+}
+
+/* This routine colorizes %src by multiplying each pixel with colors in %dest. */
+
+GdkPixbuf *
+eel_create_colorized_pixbuf (GdkPixbuf *src,
+ GdkPixbuf *dest)
+{
+ int i, j;
+ int width, height, has_alpha, src_row_stride, dst_row_stride;
+ guchar *target_pixels;
+ guchar *original_pixels;
+ guchar *pixsrc;
+ guchar *pixdest;
+
+ g_return_val_if_fail (gdk_pixbuf_get_colorspace (src) == GDK_COLORSPACE_RGB, NULL);
+ g_return_val_if_fail (gdk_pixbuf_get_colorspace (dest) == GDK_COLORSPACE_RGB, NULL);
+
+ g_return_val_if_fail ((!gdk_pixbuf_get_has_alpha (src)
+ && gdk_pixbuf_get_n_channels (src) == 3)
+ || (gdk_pixbuf_get_has_alpha (src)
+ && gdk_pixbuf_get_n_channels (src) == 4), NULL);
+ g_return_val_if_fail ((!gdk_pixbuf_get_has_alpha (dest)
+ && gdk_pixbuf_get_n_channels (dest) == 3)
+ || (gdk_pixbuf_get_has_alpha (dest)
+ && gdk_pixbuf_get_n_channels (dest) == 4), NULL);
+
+ g_return_val_if_fail (gdk_pixbuf_get_bits_per_sample (src) == 8, NULL);
+ g_return_val_if_fail (gdk_pixbuf_get_bits_per_sample (dest) == 8, NULL);
+
+ has_alpha = gdk_pixbuf_get_has_alpha (src);
+ width = gdk_pixbuf_get_width (src);
+ height = gdk_pixbuf_get_height (src);
+ src_row_stride = gdk_pixbuf_get_rowstride (src);
+ dst_row_stride = gdk_pixbuf_get_rowstride (dest);
+ target_pixels = gdk_pixbuf_get_pixels (dest);
+ original_pixels = gdk_pixbuf_get_pixels (src);
+
+ for (i = 0; i < height; i++)
+ {
+ pixdest = target_pixels + i * dst_row_stride;
+ pixsrc = original_pixels + i * src_row_stride;
+ for (j = 0; j < width; j++)
+ {
+ *pixdest = ((*pixsrc++) * (*pixdest)) >> 8;
+ pixdest++;
+ *pixdest = ((*pixsrc++) * (*pixdest)) >> 8;
+ pixdest++;
+ *pixdest = ((*pixsrc++) * (*pixdest)) >> 8;
+ pixdest++;
+ if (has_alpha)
+ {
+ *pixdest++ = *pixsrc++;
+ }
+ }
+ }
+ return dest;
+}
diff --git a/eel/eel-graphic-effects.h b/eel/eel-graphic-effects.h
new file mode 100644
index 0000000..67de5f7
--- /dev/null
+++ b/eel/eel-graphic-effects.h
@@ -0,0 +1,32 @@
+/*
+ eel-graphic-effects.h: Pixmap manipulation routines for graphical effects.
+
+ Copyright (C) 2000 Eazel, Inc.
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with this program; if not, see <http://www.gnu.org/licenses/>.
+
+ Authors: Andy Hertzfeld <andy@eazel.com>
+ */
+
+#pragma once
+
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <gdk/gdk.h>
+
+/* return a lightened pixbuf for pre-lighting */
+GdkPixbuf *eel_create_spotlight_pixbuf (GdkPixbuf *source_pixbuf);
+
+/* return a pixbuf colorized with the color specified by the parameters */
+GdkPixbuf* eel_create_colorized_pixbuf (GdkPixbuf *source_pixbuf,
+ GdkPixbuf *dest);
diff --git a/eel/eel-gtk-extensions.c b/eel/eel-gtk-extensions.c
new file mode 100644
index 0000000..45b072d
--- /dev/null
+++ b/eel/eel-gtk-extensions.c
@@ -0,0 +1,93 @@
+/* eel-gtk-extensions.c - implementation of new functions that operate on
+ * gtk classes. Perhaps some of these should be
+ * rolled into gtk someday.
+ *
+ * Copyright (C) 1999, 2000, 2001 Eazel, Inc.
+ *
+ * The Gnome Library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Gnome Library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with the Gnome Library; see the file COPYING.LIB. If not,
+ * see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: John Sullivan <sullivan@eazel.com>
+ * Ramiro Estrugo <ramiro@eazel.com>
+ * Darin Adler <darin@eazel.com>
+ */
+
+#include <config.h>
+#include "eel-gtk-extensions.h"
+
+#include "eel-glib-extensions.h"
+#include "eel-string.h"
+
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
+#include <glib/gi18n-lib.h>
+#include <math.h>
+
+/* This number is fairly arbitrary. Long enough to show a pretty long
+ * menu title, but not so long to make a menu grotesquely wide.
+ */
+#define MAXIMUM_MENU_TITLE_LENGTH 48
+
+/* Used for window position & size sanity-checking. The sizes are big enough to prevent
+ * at least normal-sized gnome panels from obscuring the window at the screen edges.
+ */
+#define MINIMUM_ON_SCREEN_WIDTH 100
+#define MINIMUM_ON_SCREEN_HEIGHT 100
+
+
+/**
+ * eel_gtk_window_get_geometry_string:
+ * @window: a #GtkWindow
+ *
+ * Obtains the geometry string for this window, suitable for
+ * set_geometry_string(); assumes the window has NorthWest gravity
+ *
+ * Return value: geometry string, must be freed
+ **/
+char *
+eel_gtk_window_get_geometry_string (GtkWindow *window)
+{
+ char *str;
+ int w, h, x, y;
+
+ g_return_val_if_fail (GTK_IS_WINDOW (window), NULL);
+ g_return_val_if_fail (gtk_window_get_gravity (window) ==
+ GDK_GRAVITY_NORTH_WEST, NULL);
+
+ gtk_window_get_position (window, &x, &y);
+ gtk_window_get_size (window, &w, &h);
+
+ str = g_strdup_printf ("%dx%d+%d+%d", w, h, x, y);
+
+ return str;
+}
+
+GtkMenuItem *
+eel_gtk_menu_append_separator (GtkMenu *menu)
+{
+ return eel_gtk_menu_insert_separator (menu, -1);
+}
+
+GtkMenuItem *
+eel_gtk_menu_insert_separator (GtkMenu *menu,
+ int index)
+{
+ GtkWidget *menu_item;
+
+ menu_item = gtk_separator_menu_item_new ();
+ gtk_widget_show (menu_item);
+ gtk_menu_shell_insert (GTK_MENU_SHELL (menu), menu_item, index);
+
+ return GTK_MENU_ITEM (menu_item);
+}
diff --git a/eel/eel-gtk-extensions.h b/eel/eel-gtk-extensions.h
new file mode 100644
index 0000000..0a5eac1
--- /dev/null
+++ b/eel/eel-gtk-extensions.h
@@ -0,0 +1,37 @@
+
+/* eel-gtk-extensions.h - interface for new functions that operate on
+ gtk classes. Perhaps some of these should be
+ rolled into gtk someday.
+
+ Copyright (C) 1999, 2000, 2001 Eazel, Inc.
+
+ The Gnome Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The Gnome Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the Gnome Library; see the file COPYING.LIB. If not,
+ see <http://www.gnu.org/licenses/>.
+
+ Authors: John Sullivan <sullivan@eazel.com>
+ Ramiro Estrugo <ramiro@eazel.com>
+*/
+
+#pragma once
+
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <gtk/gtk.h>
+
+/* GtkWindow */
+char * eel_gtk_window_get_geometry_string (GtkWindow *window);
+
+/* GtkMenu and GtkMenuItem */
+GtkMenuItem * eel_gtk_menu_append_separator (GtkMenu *menu);
+GtkMenuItem * eel_gtk_menu_insert_separator (GtkMenu *menu,
+ int index); \ No newline at end of file
diff --git a/eel/eel-lib-self-check-functions.c b/eel/eel-lib-self-check-functions.c
new file mode 100644
index 0000000..af1dddf
--- /dev/null
+++ b/eel/eel-lib-self-check-functions.c
@@ -0,0 +1,35 @@
+/*
+ * eel-lib-self-check-functions.c: Wrapper for all self check functions
+ * in Eel proper.
+ *
+ * Copyright (C) 2000 Eazel, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Darin Adler <darin@eazel.com>
+ */
+
+#include <config.h>
+
+#if !defined (EEL_OMIT_SELF_CHECK)
+
+#include "eel-lib-self-check-functions.h"
+
+void
+eel_run_lib_self_checks (void)
+{
+ EEL_LIB_FOR_EACH_SELF_CHECK_FUNCTION (EEL_CALL_SELF_CHECK_FUNCTION)
+}
+
+#endif /* ! EEL_OMIT_SELF_CHECK */
diff --git a/eel/eel-lib-self-check-functions.h b/eel/eel-lib-self-check-functions.h
new file mode 100644
index 0000000..3a21430
--- /dev/null
+++ b/eel/eel-lib-self-check-functions.h
@@ -0,0 +1,45 @@
+/*
+ eel-lib-self-check-functions.h: Wrapper and prototypes for all
+ self-check functions in libeel.
+
+ Copyright (C) 2000 Eazel, Inc.
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with this program; if not, see <http://www.gnu.org/licenses/>.
+
+ Author: Darin Adler <darin@eazel.com>
+*/
+
+#pragma once
+
+#include "eel-self-checks.h"
+
+void eel_run_lib_self_checks (void);
+
+/* Putting the prototypes for these self-check functions in each
+ header file for the files they are defined in would make compiling
+ the self-check framework take way too long (since one file would
+ have to include everything).
+
+ So we put the list of functions here instead.
+
+ Instead of just putting prototypes here, we put this macro that
+ can be used to do operations on the whole list of functions.
+*/
+
+#define EEL_LIB_FOR_EACH_SELF_CHECK_FUNCTION(macro) \
+ macro (eel_self_check_string) \
+/* Add new self-check functions to the list above this line. */
+
+/* Generate prototypes for all the functions. */
+EEL_LIB_FOR_EACH_SELF_CHECK_FUNCTION (EEL_SELF_CHECK_FUNCTION_PROTOTYPE)
diff --git a/eel/eel-self-checks.c b/eel/eel-self-checks.c
new file mode 100644
index 0000000..0ed94f2
--- /dev/null
+++ b/eel/eel-self-checks.c
@@ -0,0 +1,203 @@
+/*
+ * eel-self-checks.c: The self-check framework.
+ *
+ * Copyright (C) 1999 Eazel, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Darin Adler <darin@eazel.com>
+ */
+
+#include <config.h>
+
+#if !defined (EEL_OMIT_SELF_CHECK)
+
+#include "eel-self-checks.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static gboolean failed;
+
+static const char *current_expression;
+static const char *current_file_name;
+static int current_line_number;
+
+void
+eel_exit_if_self_checks_failed (void)
+{
+ if (!failed)
+ {
+ return;
+ }
+
+ printf ("\n");
+
+ exit (EXIT_FAILURE);
+}
+
+void
+eel_report_check_failure (char *result,
+ char *expected)
+{
+ if (!failed)
+ {
+ fprintf (stderr, "\n");
+ }
+
+ fprintf (stderr, "FAIL: check failed in %s, line %d\n", current_file_name, current_line_number);
+ fprintf (stderr, " evaluated: %s\n", current_expression);
+ fprintf (stderr, " expected: %s\n", expected == NULL ? "NULL" : expected);
+ fprintf (stderr, " got: %s\n", result == NULL ? "NULL" : result);
+
+ failed = TRUE;
+
+ g_free (result);
+ g_free (expected);
+}
+
+static char *
+eel_strdup_boolean (gboolean boolean)
+{
+ if (boolean == FALSE)
+ {
+ return g_strdup ("FALSE");
+ }
+ if (boolean == TRUE)
+ {
+ return g_strdup ("TRUE");
+ }
+ return g_strdup_printf ("gboolean(%d)", boolean);
+}
+
+void
+eel_before_check (const char *expression,
+ const char *file_name,
+ int line_number)
+{
+ current_expression = expression;
+ current_file_name = file_name;
+ current_line_number = line_number;
+}
+
+void
+eel_after_check (void)
+{
+ /* It would be good to check here if there was a memory leak. */
+}
+
+void
+eel_check_boolean_result (gboolean result,
+ gboolean expected)
+{
+ if (result != expected)
+ {
+ eel_report_check_failure (eel_strdup_boolean (result),
+ eel_strdup_boolean (expected));
+ }
+ eel_after_check ();
+}
+
+void
+eel_check_rectangle_result (EelIRect result,
+ int expected_x0,
+ int expected_y0,
+ int expected_x1,
+ int expected_y1)
+{
+ if (result.x0 != expected_x0
+ || result.y0 != expected_y0
+ || result.x1 != expected_x1
+ || result.y1 != expected_y1)
+ {
+ eel_report_check_failure (g_strdup_printf ("x0=%d, y0=%d, x1=%d, y1=%d",
+ result.x0,
+ result.y0,
+ result.x1,
+ result.y1),
+ g_strdup_printf ("x0=%d, y0=%d, x1=%d, y1=%d",
+ expected_x0,
+ expected_y0,
+ expected_x1,
+ expected_y1));
+ }
+ eel_after_check ();
+}
+
+void
+eel_check_integer_result (long result,
+ long expected)
+{
+ if (result != expected)
+ {
+ eel_report_check_failure (g_strdup_printf ("%ld", result),
+ g_strdup_printf ("%ld", expected));
+ }
+ eel_after_check ();
+}
+
+void
+eel_check_double_result (double result,
+ double expected)
+{
+ if (result != expected)
+ {
+ eel_report_check_failure (g_strdup_printf ("%f", result),
+ g_strdup_printf ("%f", expected));
+ }
+ eel_after_check ();
+}
+
+void
+eel_check_string_result (char *result,
+ const char *expected)
+{
+ gboolean match;
+
+ /* Stricter than eel_strcmp.
+ * NULL does not match "" in this test.
+ */
+ if (expected == NULL)
+ {
+ match = result == NULL;
+ }
+ else
+ {
+ match = result != NULL && strcmp (result, expected) == 0;
+ }
+
+ if (!match)
+ {
+ eel_report_check_failure (result, g_strdup (expected));
+ }
+ else
+ {
+ g_free (result);
+ }
+ eel_after_check ();
+}
+
+void
+eel_before_check_function (const char *name)
+{
+ fprintf (stderr, "running %s\n", name);
+}
+
+void
+eel_after_check_function (void)
+{
+}
+
+#endif /* ! EEL_OMIT_SELF_CHECK */
diff --git a/eel/eel-self-checks.h b/eel/eel-self-checks.h
new file mode 100644
index 0000000..ac48e1f
--- /dev/null
+++ b/eel/eel-self-checks.h
@@ -0,0 +1,78 @@
+/*
+ eel-self-checks.h: The self-check framework.
+
+ Copyright (C) 1999 Eazel, Inc.
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with this program; if not, see <http://www.gnu.org/licenses/>.
+
+ Author: Darin Adler <darin@eazel.com>
+*/
+
+#pragma once
+
+#include <glib.h>
+#include <eel/eel-art-extensions.h>
+
+#define EEL_CHECK_RESULT(type, expression, expected_value) \
+G_STMT_START { \
+ eel_before_check (#expression, __FILE__, __LINE__); \
+ eel_check_##type##_result (expression, expected_value); \
+} G_STMT_END
+
+#define EEL_CHECK_BOOLEAN_RESULT(expression, expected_value) \
+ EEL_CHECK_RESULT(boolean, expression, expected_value)
+#define EEL_CHECK_INTEGER_RESULT(expression, expected_value) \
+ EEL_CHECK_RESULT(integer, expression, expected_value)
+#define EEL_CHECK_DOUBLE_RESULT(expression, expected_value) \
+ EEL_CHECK_RESULT(double, expression, expected_value)
+#define EEL_CHECK_STRING_RESULT(expression, expected_value) \
+ EEL_CHECK_RESULT(string, expression, expected_value)
+#define EEL_CHECK_RECTANGLE_RESULT(expression, expected_x0, expected_y0, expected_x1, expected_y1) \
+G_STMT_START { \
+ eel_before_check (#expression, __FILE__, __LINE__); \
+ eel_check_rectangle_result (expression, expected_x0, expected_y0, expected_x1, expected_y1); \
+} G_STMT_END
+
+void eel_exit_if_self_checks_failed (void);
+void eel_before_check_function (const char *name);
+void eel_after_check_function (void);
+void eel_before_check (const char *expression,
+ const char *file_name,
+ int line_number);
+void eel_after_check (void);
+
+/* Both 'result' and 'expected' get freed with g_free */
+void eel_report_check_failure (char *result,
+ char *expected);
+void eel_check_boolean_result (gboolean result,
+ gboolean expected_value);
+void eel_check_integer_result (long result,
+ long expected_value);
+void eel_check_double_result (double result,
+ double expected_value);
+void eel_check_rectangle_result (EelIRect result,
+ int expected_x0,
+ int expected_y0,
+ int expected_x1,
+ int expected_y1);
+void eel_check_string_result (char *result,
+ const char *expected_value);
+
+#define EEL_SELF_CHECK_FUNCTION_PROTOTYPE(function) \
+ void function (void);
+
+#define EEL_CALL_SELF_CHECK_FUNCTION(function) \
+ eel_before_check_function (#function); \
+ function (); \
+ eel_after_check_function ();
diff --git a/eel/eel-stock-dialogs.c b/eel/eel-stock-dialogs.c
new file mode 100644
index 0000000..499af99
--- /dev/null
+++ b/eel/eel-stock-dialogs.c
@@ -0,0 +1,539 @@
+/* eel-stock-dialogs.c: Various standard dialogs for Eel.
+ *
+ * Copyright (C) 2000 Eazel, Inc.
+ *
+ * The Gnome Library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Gnome Library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with the Gnome Library; see the file COPYING.LIB. If not,
+ * see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Darin Adler <darin@eazel.com>
+ */
+
+#include <config.h>
+#include "eel-stock-dialogs.h"
+
+#include "eel-glib-extensions.h"
+#include "eel-gtk-extensions.h"
+
+#include <glib/gi18n-lib.h>
+#include <gtk/gtk.h>
+
+#define TIMED_WAIT_STANDARD_DURATION 2000
+#define TIMED_WAIT_MIN_TIME_UP 3000
+
+#define TIMED_WAIT_MINIMUM_DIALOG_WIDTH 300
+
+#define RESPONSE_DETAILS 1000
+
+typedef struct
+{
+ EelCancelCallback cancel_callback;
+ gpointer callback_data;
+
+ /* Parameters for creation of the window. */
+ char *wait_message;
+ GtkWindow *parent_window;
+
+ /* Timer to determine when we need to create the window. */
+ guint timeout_handler_id;
+
+ /* Window, once it's created. */
+ GtkDialog *dialog;
+
+ /* system time (microseconds) when dialog was created */
+ gint64 dialog_creation_time;
+} TimedWait;
+
+static GHashTable *timed_wait_hash_table;
+
+static void timed_wait_dialog_destroy_callback (GtkWidget *object,
+ gpointer callback_data);
+
+static guint
+timed_wait_hash (gconstpointer value)
+{
+ const TimedWait *wait;
+
+ wait = value;
+
+ return GPOINTER_TO_UINT (wait->cancel_callback)
+ ^ GPOINTER_TO_UINT (wait->callback_data);
+}
+
+static gboolean
+timed_wait_hash_equal (gconstpointer value1,
+ gconstpointer value2)
+{
+ const TimedWait *wait1, *wait2;
+
+ wait1 = value1;
+ wait2 = value2;
+
+ return wait1->cancel_callback == wait2->cancel_callback
+ && wait1->callback_data == wait2->callback_data;
+}
+
+static void
+timed_wait_delayed_close_destroy_dialog_callback (GtkWidget *object,
+ gpointer callback_data)
+{
+ g_source_remove (GPOINTER_TO_UINT (callback_data));
+}
+
+static gboolean
+timed_wait_delayed_close_timeout_callback (gpointer callback_data)
+{
+ guint handler_id;
+
+ handler_id = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (callback_data),
+ "eel-stock-dialogs/delayed_close_handler_timeout_id"));
+
+ g_signal_handlers_disconnect_by_func (G_OBJECT (callback_data),
+ G_CALLBACK (timed_wait_delayed_close_destroy_dialog_callback),
+ GUINT_TO_POINTER (handler_id));
+
+ gtk_widget_destroy (GTK_WIDGET (callback_data));
+
+ return FALSE;
+}
+
+static void
+timed_wait_free (TimedWait *wait)
+{
+ guint delayed_close_handler_id;
+ guint64 time_up;
+
+ g_assert (g_hash_table_lookup (timed_wait_hash_table, wait) != NULL);
+
+ g_hash_table_remove (timed_wait_hash_table, wait);
+
+ g_free (wait->wait_message);
+ if (wait->parent_window != NULL)
+ {
+ g_object_unref (wait->parent_window);
+ }
+ if (wait->timeout_handler_id != 0)
+ {
+ g_source_remove (wait->timeout_handler_id);
+ }
+ if (wait->dialog != NULL)
+ {
+ /* Make sure to detach from the "destroy" signal, or we'll
+ * double-free.
+ */
+ g_signal_handlers_disconnect_by_func (G_OBJECT (wait->dialog),
+ G_CALLBACK (timed_wait_dialog_destroy_callback),
+ wait);
+
+ /* compute time up in milliseconds */
+ time_up = (g_get_monotonic_time () - wait->dialog_creation_time) / 1000;
+
+ if (time_up < TIMED_WAIT_MIN_TIME_UP)
+ {
+ delayed_close_handler_id = g_timeout_add (TIMED_WAIT_MIN_TIME_UP - time_up,
+ timed_wait_delayed_close_timeout_callback,
+ wait->dialog);
+ g_object_set_data (G_OBJECT (wait->dialog),
+ "eel-stock-dialogs/delayed_close_handler_timeout_id",
+ GUINT_TO_POINTER (delayed_close_handler_id));
+ g_signal_connect (wait->dialog, "destroy",
+ G_CALLBACK (timed_wait_delayed_close_destroy_dialog_callback),
+ GUINT_TO_POINTER (delayed_close_handler_id));
+ }
+ else
+ {
+ gtk_widget_destroy (GTK_WIDGET (wait->dialog));
+ }
+ }
+
+ /* And the wait object itself. */
+ g_free (wait);
+}
+
+static void
+timed_wait_dialog_destroy_callback (GtkWidget *object,
+ gpointer callback_data)
+{
+ TimedWait *wait;
+
+ wait = callback_data;
+
+ g_assert (GTK_DIALOG (object) == wait->dialog);
+
+ wait->dialog = NULL;
+
+ /* When there's no cancel_callback, the originator will/must
+ * call eel_timed_wait_stop which will call timed_wait_free.
+ */
+
+ if (wait->cancel_callback != NULL)
+ {
+ (*wait->cancel_callback)(wait->callback_data);
+ timed_wait_free (wait);
+ }
+}
+
+static void
+trash_dialog_response_callback (GtkDialog *dialog,
+ int response_id,
+ TimedWait *wait)
+{
+ gtk_widget_destroy (GTK_WIDGET (dialog));
+}
+
+static gboolean
+timed_wait_callback (gpointer callback_data)
+{
+ TimedWait *wait;
+ GtkDialog *dialog;
+ const char *button;
+
+ wait = callback_data;
+
+ /* Put up the timed wait window. */
+ button = wait->cancel_callback != NULL ? _("_Cancel") : ("_OK");
+ dialog = GTK_DIALOG (gtk_message_dialog_new (wait->parent_window,
+ 0,
+ GTK_MESSAGE_INFO,
+ GTK_BUTTONS_NONE,
+ NULL));
+
+ g_object_set (dialog,
+ "text", wait->wait_message,
+ "secondary-text", _("You can stop this operation by clicking cancel."),
+ NULL);
+
+ gtk_dialog_add_button (GTK_DIALOG (dialog), button, GTK_RESPONSE_OK);
+ gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_OK);
+
+ /* The contents are often very small, causing tiny little
+ * dialogs with their titles clipped if you just let gtk
+ * sizing do its thing. This enforces a minimum width to
+ * make it more likely that the title won't be clipped.
+ */
+ gtk_window_set_default_size (GTK_WINDOW (dialog),
+ TIMED_WAIT_MINIMUM_DIALOG_WIDTH,
+ -1);
+ wait->dialog_creation_time = g_get_monotonic_time ();
+ gtk_widget_show (GTK_WIDGET (dialog));
+
+ /* FIXME bugzilla.eazel.com 2441:
+ * Could parent here, but it's complicated because we
+ * don't want this window to go away just because the parent
+ * would go away first.
+ */
+
+ /* Make the dialog cancel the timed wait when it goes away.
+ * Connect to "destroy" instead of "response" since we want
+ * to be called no matter how the dialog goes away.
+ */
+ g_signal_connect (dialog, "destroy",
+ G_CALLBACK (timed_wait_dialog_destroy_callback),
+ wait);
+ g_signal_connect (dialog, "response",
+ G_CALLBACK (trash_dialog_response_callback),
+ wait);
+
+ wait->timeout_handler_id = 0;
+ wait->dialog = dialog;
+
+ return FALSE;
+}
+
+void
+eel_timed_wait_start_with_duration (int duration,
+ EelCancelCallback cancel_callback,
+ gpointer callback_data,
+ const char *wait_message,
+ GtkWindow *parent_window)
+{
+ TimedWait *wait;
+
+ g_return_if_fail (callback_data != NULL);
+ g_return_if_fail (wait_message != NULL);
+ g_return_if_fail (parent_window == NULL || GTK_IS_WINDOW (parent_window));
+
+ /* Create the timed wait record. */
+ wait = g_new0 (TimedWait, 1);
+ wait->wait_message = g_strdup (wait_message);
+ wait->cancel_callback = cancel_callback;
+ wait->callback_data = callback_data;
+ wait->parent_window = parent_window;
+
+ if (parent_window != NULL)
+ {
+ g_object_ref (parent_window);
+ }
+
+ /* Start the timer. */
+ wait->timeout_handler_id = g_timeout_add (duration, timed_wait_callback, wait);
+
+ /* Put in the hash table so we can find it later. */
+ if (timed_wait_hash_table == NULL)
+ {
+ timed_wait_hash_table = g_hash_table_new (timed_wait_hash, timed_wait_hash_equal);
+ }
+ g_assert (g_hash_table_lookup (timed_wait_hash_table, wait) == NULL);
+ g_hash_table_insert (timed_wait_hash_table, wait, wait);
+ g_assert (g_hash_table_lookup (timed_wait_hash_table, wait) == wait);
+}
+
+void
+eel_timed_wait_start (EelCancelCallback cancel_callback,
+ gpointer callback_data,
+ const char *wait_message,
+ GtkWindow *parent_window)
+{
+ eel_timed_wait_start_with_duration
+ (TIMED_WAIT_STANDARD_DURATION,
+ cancel_callback, callback_data,
+ wait_message, parent_window);
+}
+
+void
+eel_timed_wait_stop (EelCancelCallback cancel_callback,
+ gpointer callback_data)
+{
+ TimedWait key;
+ TimedWait *wait;
+
+ g_return_if_fail (callback_data != NULL);
+
+ key.cancel_callback = cancel_callback;
+ key.callback_data = callback_data;
+ wait = g_hash_table_lookup (timed_wait_hash_table, &key);
+
+ g_return_if_fail (wait != NULL);
+
+ timed_wait_free (wait);
+}
+
+int
+eel_run_simple_dialog (GtkWidget *parent,
+ gboolean ignore_close_box,
+ GtkMessageType message_type,
+ const char *primary_text,
+ const char *secondary_text,
+ ...)
+{
+ va_list button_title_args;
+ const char *button_title;
+ GtkWidget *dialog;
+ GtkWidget *top_widget, *chosen_parent;
+ int result;
+ int response_id;
+
+ /* Parent it if asked to. */
+ chosen_parent = NULL;
+ if (parent != NULL)
+ {
+ top_widget = gtk_widget_get_toplevel (parent);
+ if (GTK_IS_WINDOW (top_widget))
+ {
+ chosen_parent = top_widget;
+ }
+ }
+
+ /* Create the dialog. */
+ dialog = gtk_message_dialog_new (GTK_WINDOW (chosen_parent),
+ 0,
+ message_type,
+ GTK_BUTTONS_NONE,
+ NULL);
+
+ g_object_set (dialog,
+ "text", primary_text,
+ "secondary-text", secondary_text,
+ NULL);
+
+ va_start (button_title_args, secondary_text);
+ response_id = 0;
+ while (1)
+ {
+ button_title = va_arg (button_title_args, const char *);
+ if (button_title == NULL)
+ {
+ break;
+ }
+ gtk_dialog_add_button (GTK_DIALOG (dialog), button_title, response_id);
+ gtk_dialog_set_default_response (GTK_DIALOG (dialog), response_id);
+ response_id++;
+ }
+ va_end (button_title_args);
+
+ /* Run it. */
+ gtk_widget_show (dialog);
+ result = gtk_dialog_run (GTK_DIALOG (dialog));
+ while ((result == GTK_RESPONSE_NONE || result == GTK_RESPONSE_DELETE_EVENT) && ignore_close_box)
+ {
+ gtk_widget_show (GTK_WIDGET (dialog));
+ result = gtk_dialog_run (GTK_DIALOG (dialog));
+ }
+ gtk_widget_destroy (dialog);
+
+ return result;
+}
+
+static GtkDialog *
+create_message_dialog (const char *primary_text,
+ const char *secondary_text,
+ GtkMessageType type,
+ GtkButtonsType buttons_type,
+ GtkWindow *parent)
+{
+ GtkWidget *dialog;
+
+ dialog = gtk_message_dialog_new (parent,
+ 0,
+ type,
+ buttons_type,
+ NULL);
+ if (parent)
+ {
+ gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
+ }
+
+ g_object_set (dialog,
+ "text", primary_text,
+ "secondary-text", secondary_text,
+ NULL);
+
+ return GTK_DIALOG (dialog);
+}
+
+static GtkDialog *
+show_message_dialog (const char *primary_text,
+ const char *secondary_text,
+ GtkMessageType type,
+ GtkButtonsType buttons_type,
+ GtkWindow *parent)
+{
+ GtkDialog *dialog;
+
+ dialog = create_message_dialog (primary_text, secondary_text, type,
+ buttons_type, parent);
+ gtk_widget_show (GTK_WIDGET (dialog));
+
+ g_signal_connect (dialog, "response",
+ G_CALLBACK (gtk_widget_destroy), NULL);
+
+ return dialog;
+}
+
+static GtkDialog *
+show_ok_dialog (const char *primary_text,
+ const char *secondary_text,
+ GtkMessageType type,
+ GtkWindow *parent)
+{
+ GtkDialog *dialog;
+
+ dialog = show_message_dialog (primary_text, secondary_text, type,
+ GTK_BUTTONS_OK, parent);
+ gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_OK);
+
+ return dialog;
+}
+
+GtkDialog *
+eel_show_info_dialog (const char *primary_text,
+ const char *secondary_text,
+ GtkWindow *parent)
+{
+ return show_ok_dialog (primary_text,
+ secondary_text,
+ GTK_MESSAGE_INFO, parent);
+}
+
+GtkDialog *
+eel_show_warning_dialog (const char *primary_text,
+ const char *secondary_text,
+ GtkWindow *parent)
+{
+ return show_ok_dialog (primary_text,
+ secondary_text,
+ GTK_MESSAGE_WARNING, parent);
+}
+
+
+GtkDialog *
+eel_show_error_dialog (const char *primary_text,
+ const char *secondary_text,
+ GtkWindow *parent)
+{
+ return show_ok_dialog (primary_text,
+ secondary_text,
+ GTK_MESSAGE_ERROR, parent);
+}
+
+/**
+ * eel_show_yes_no_dialog:
+ *
+ * Create and show a dialog asking a question with two choices.
+ * The caller needs to set up any necessary callbacks
+ * for the buttons. Use eel_create_question_dialog instead
+ * if any visual changes need to be made, to avoid flashiness.
+ * @question: The text of the question.
+ * @yes_label: The label of the "yes" button.
+ * @no_label: The label of the "no" button.
+ * @parent: The parent window for this dialog.
+ */
+GtkDialog *
+eel_show_yes_no_dialog (const char *primary_text,
+ const char *secondary_text,
+ const char *yes_label,
+ const char *no_label,
+ GtkWindow *parent)
+{
+ GtkDialog *dialog = NULL;
+ dialog = eel_create_question_dialog (primary_text,
+ secondary_text,
+ no_label, GTK_RESPONSE_CANCEL,
+ yes_label, GTK_RESPONSE_YES,
+ GTK_WINDOW (parent));
+ gtk_widget_show (GTK_WIDGET (dialog));
+ return dialog;
+}
+
+/**
+ * eel_create_question_dialog:
+ *
+ * Create a dialog asking a question with at least two choices.
+ * The caller needs to set up any necessary callbacks
+ * for the buttons. The dialog is not yet shown, so that the
+ * caller can add additional buttons or make other visual changes
+ * without causing flashiness.
+ * @question: The text of the question.
+ * @answer_0: The label of the leftmost button (index 0)
+ * @answer_1: The label of the 2nd-to-leftmost button (index 1)
+ * @parent: The parent window for this dialog.
+ */
+GtkDialog *
+eel_create_question_dialog (const char *primary_text,
+ const char *secondary_text,
+ const char *answer_1,
+ int response_1,
+ const char *answer_2,
+ int response_2,
+ GtkWindow *parent)
+{
+ GtkDialog *dialog;
+
+ dialog = create_message_dialog (primary_text,
+ secondary_text,
+ GTK_MESSAGE_QUESTION,
+ GTK_BUTTONS_NONE,
+ parent);
+ gtk_dialog_add_buttons (dialog, answer_1, response_1, answer_2, response_2, NULL);
+ return dialog;
+}
diff --git a/eel/eel-stock-dialogs.h b/eel/eel-stock-dialogs.h
new file mode 100644
index 0000000..7926861
--- /dev/null
+++ b/eel/eel-stock-dialogs.h
@@ -0,0 +1,75 @@
+
+/* eel-stock-dialogs.h: Various standard dialogs for Eel.
+
+ Copyright (C) 2000 Eazel, Inc.
+
+ The Gnome Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The Gnome Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the Gnome Library; see the file COPYING.LIB. If not,
+ see <http://www.gnu.org/licenses/>.
+
+ Authors: Darin Adler <darin@eazel.com>
+*/
+
+#pragma once
+
+#include <gtk/gtk.h>
+
+typedef void (* EelCancelCallback) (gpointer callback_data);
+
+/* Dialog for cancelling something that normally is fast enough not to need a dialog. */
+void eel_timed_wait_start (EelCancelCallback cancel_callback,
+ gpointer callback_data,
+ const char *wait_message,
+ GtkWindow *parent_window);
+void eel_timed_wait_start_with_duration (int duration,
+ EelCancelCallback cancel_callback,
+ gpointer callback_data,
+ const char *wait_message,
+ GtkWindow *parent_window);
+void eel_timed_wait_stop (EelCancelCallback cancel_callback,
+ gpointer callback_data);
+
+/* Basic dialog with buttons. */
+int eel_run_simple_dialog (GtkWidget *parent,
+ gboolean ignore_close_box,
+ GtkMessageType message_type,
+ const char *primary_text,
+ const char *secondary_text,
+ ...);
+
+/* Variations on gnome stock dialogs; these do line wrapping, we don't
+ * bother with non-parented versions, we allow setting the title,
+ * primary, and secondary messages, and we return GtkDialog pointers
+ * instead of GtkWidget pointers.
+ */
+GtkDialog *eel_show_info_dialog (const char *primary_text,
+ const char *secondary_text,
+ GtkWindow *parent);
+GtkDialog *eel_show_warning_dialog (const char *primary_text,
+ const char *secondary_text,
+ GtkWindow *parent);
+GtkDialog *eel_show_error_dialog (const char *primary_text,
+ const char *secondary_text,
+ GtkWindow *parent);
+GtkDialog *eel_show_yes_no_dialog (const char *primary_text,
+ const char *secondary_text,
+ const char *yes_label,
+ const char *no_label,
+ GtkWindow *parent);
+GtkDialog *eel_create_question_dialog (const char *primary_text,
+ const char *secondary_text,
+ const char *answer_one,
+ int response_one,
+ const char *answer_two,
+ int response_two,
+ GtkWindow *parent); \ No newline at end of file
diff --git a/eel/eel-string.c b/eel/eel-string.c
new file mode 100644
index 0000000..5d70089
--- /dev/null
+++ b/eel/eel-string.c
@@ -0,0 +1,476 @@
+/*
+ * eel-string.c: String routines to augment <string.h>.
+ *
+ * Copyright (C) 2000 Eazel, Inc.
+ *
+ * The Gnome Library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Gnome Library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with the Gnome Library; see the file COPYING.LIB. If not,
+ * see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Darin Adler <darin@eazel.com>
+ */
+
+#include <config.h>
+#include "eel-string.h"
+
+#include <errno.h>
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <eel-glib-extensions.h>
+
+#if !defined (EEL_OMIT_SELF_CHECK)
+#include "eel-lib-self-check-functions.h"
+#endif
+
+/**
+ * eel_str_double_underscores:
+ * @string: input string
+ *
+ * This is used if you want to preserve underscore characters
+ * when creating a label with gtk_label_new_with_mnemonic().
+ *
+ * Returns: a newly allocated copy of @string,
+ * with a doubled number of underscores.
+ * If @string doesn't contain underscores, returns a copy of it.
+ * If @string is %NULL, returns %NULL.
+ */
+char *
+eel_str_double_underscores (const char *string)
+{
+ int underscores;
+ const char *p;
+ char *q;
+ char *escaped;
+
+ if (string == NULL)
+ {
+ return NULL;
+ }
+
+ underscores = 0;
+ for (p = string; *p != '\0'; p++)
+ {
+ underscores += (*p == '_');
+ }
+
+ if (underscores == 0)
+ {
+ return g_strdup (string);
+ }
+
+ escaped = g_new (char, strlen (string) + underscores + 1);
+ for (p = string, q = escaped; *p != '\0'; p++, q++)
+ {
+ /* Add an extra underscore. */
+ if (*p == '_')
+ {
+ *q++ = '_';
+ }
+ *q = *p;
+ }
+ *q = '\0';
+
+ return escaped;
+}
+
+/**
+ * eel_str_capitalize:
+ * @string: input string
+ *
+ * Returns: a newly allocated copy of @string,
+ * with the first letter capitalized.
+ * If @string is %NULL, returns %NULL.
+ */
+char *
+eel_str_capitalize (const char *string)
+{
+ char *capitalized;
+
+ if (string == NULL)
+ {
+ return NULL;
+ }
+
+ capitalized = g_strdup (string);
+
+ capitalized[0] = g_ascii_toupper (capitalized[0]);
+
+ return capitalized;
+}
+
+/**
+ * eel_str_middle_truncate:
+ * @string: (not nullable): input string
+ * truncate_length: length of the truncated string
+ *
+ * Returns: (transfer full): a newly-allocated copy of @string with its middle
+ * truncated and replaced with ellipsis to fit into @truncate_length characters.
+ * If length of @string is already small enough, returns a copy of @string.
+ */
+gchar *
+eel_str_middle_truncate (const gchar *string,
+ guint truncate_length)
+{
+ const gchar ellipsis[] = "…";
+ glong ellipsis_length;
+ glong length;
+ glong num_left_chars;
+ glong num_right_chars;
+ g_autofree gchar *left_substring = NULL;
+ g_autofree gchar *right_substring = NULL;
+
+ g_return_val_if_fail (string != NULL, NULL);
+ g_return_val_if_fail (truncate_length > 0, NULL);
+
+ ellipsis_length = g_utf8_strlen (ellipsis, -1);
+
+ /* Our ellipsis string + one character on each side. */
+ if (truncate_length < ellipsis_length + 2)
+ {
+ return g_strdup (string);
+ }
+
+ length = g_utf8_strlen (string, -1);
+
+ if (length <= truncate_length)
+ {
+ return g_strdup (string);
+ }
+
+ num_left_chars = (truncate_length - ellipsis_length) / 2;
+ num_right_chars = truncate_length - num_left_chars - ellipsis_length;
+
+ g_assert (num_left_chars > 0);
+ g_assert (num_right_chars > 0);
+
+ left_substring = g_utf8_substring (string, 0, num_left_chars);
+ right_substring = g_utf8_substring (string, length - num_right_chars, length);
+
+ return g_strconcat (left_substring, ellipsis, right_substring, NULL);
+}
+
+/**
+ * eel_str_strip_substring_and_after:
+ * @string: input string
+ * @substring: (not nullable): substring to use in search
+ *
+ * Returns: (transfer full): a copy of @string with the first occurence of
+ * @substring removed, along with any trailing characters.
+ * If @string is %NULL, returns %NULL.
+ */
+char *
+eel_str_strip_substring_and_after (const char *string,
+ const char *substring)
+{
+ const char *substring_position;
+
+ g_return_val_if_fail (substring != NULL, g_strdup (string));
+ g_return_val_if_fail (substring[0] != '\0', g_strdup (string));
+
+ if (string == NULL)
+ {
+ return NULL;
+ }
+
+ substring_position = strstr (string, substring);
+ if (substring_position == NULL)
+ {
+ return g_strdup (string);
+ }
+
+ return g_strndup (string,
+ substring_position - string);
+}
+
+/**
+ * eel_str_replace_substring:
+ * @string: input string
+ * @substring: (not nullable): string to be replaced
+ * @replacement: string used as replacement
+ *
+ * Returns: (transfer full): a copy of @string with all occurences of @substring
+ * replaced with @replacement.
+ */
+char *
+eel_str_replace_substring (const char *string,
+ const char *substring,
+ const char *replacement)
+{
+ int substring_length, replacement_length, result_length, remaining_length;
+ const char *p, *substring_position;
+ char *result, *result_position;
+
+ g_return_val_if_fail (substring != NULL, g_strdup (string));
+ g_return_val_if_fail (substring[0] != '\0', g_strdup (string));
+
+ if (string == NULL)
+ {
+ return NULL;
+ }
+
+ substring_length = substring ? strlen (substring) : 0;
+ replacement_length = replacement ? strlen (replacement) : 0;
+
+ result_length = strlen (string);
+ for (p = string;; p = substring_position + substring_length)
+ {
+ substring_position = strstr (p, substring);
+ if (substring_position == NULL)
+ {
+ break;
+ }
+ result_length += replacement_length - substring_length;
+ }
+
+ result = g_malloc (result_length + 1);
+
+ result_position = result;
+ for (p = string;; p = substring_position + substring_length)
+ {
+ substring_position = strstr (p, substring);
+ if (substring_position == NULL)
+ {
+ remaining_length = strlen (p);
+ memcpy (result_position, p, remaining_length);
+ result_position += remaining_length;
+ break;
+ }
+ memcpy (result_position, p, substring_position - p);
+ result_position += substring_position - p;
+ memcpy (result_position, replacement, replacement_length);
+ result_position += replacement_length;
+ }
+ g_assert (result_position - result == result_length);
+ result_position[0] = '\0';
+
+ return result;
+}
+
+/**
+ * get_common_prefix_length:
+ * @str_a: first string
+ * @str_b: second string
+ * @min_required_len: the minimum number of characters required in the prefix
+ *
+ * Returns: the size of the common prefix of two strings, in characters.
+ * If there's no common prefix, or the common prefix is smaller than
+ * min_required_len, this will return -1
+ */
+static int
+get_common_prefix_length (char *str_a,
+ char *str_b,
+ int min_required_len)
+{
+ int a_len;
+ int b_len;
+ int intersection_len;
+ int matching_chars;
+ char *a;
+ char *b;
+
+ a_len = g_utf8_strlen (str_a, -1);
+ b_len = g_utf8_strlen (str_b, -1);
+
+ intersection_len = MIN (a_len, b_len);
+ if (intersection_len < min_required_len)
+ {
+ return -1;
+ }
+
+ matching_chars = 0;
+ a = str_a;
+ b = str_b;
+ while (matching_chars < intersection_len)
+ {
+ if (g_utf8_get_char (a) != g_utf8_get_char (b))
+ {
+ break;
+ }
+
+ ++matching_chars;
+
+ a = g_utf8_next_char (a);
+ b = g_utf8_next_char (b);
+ }
+
+ if (matching_chars < min_required_len)
+ {
+ return -1;
+ }
+
+ return matching_chars;
+}
+
+/**
+ * eel_str_get_common_prefix:
+ * @strs: a list of strings
+ * @min_required_len: the minimum number of characters required in prefix
+ *
+ * Returns: (transfer full): the common prefix for strings in @strs.
+ * If no such prefix exists or if the common prefix is smaller than
+ * @min_required_len, %NULL is returned.
+ */
+char *
+eel_str_get_common_prefix (GList *strs,
+ int min_required_len)
+{
+ GList *l;
+ char *common_part;
+ char *name;
+ char *truncated;
+ int matching_chars;
+
+ if (strs == NULL)
+ {
+ return NULL;
+ }
+
+ common_part = NULL;
+ for (l = strs; l != NULL; l = l->next)
+ {
+ name = l->data;
+ if (name == NULL)
+ {
+ g_free (common_part);
+ return NULL;
+ }
+
+ if (l->prev == NULL)
+ {
+ common_part = g_strdup (name);
+ continue;
+ }
+
+ matching_chars = get_common_prefix_length (common_part, name, min_required_len);
+
+ if (matching_chars == -1)
+ {
+ g_free (common_part);
+ return NULL;
+ }
+
+ truncated = g_utf8_substring (common_part, 0, matching_chars);
+ g_free (common_part);
+ common_part = truncated;
+ }
+
+ matching_chars = g_utf8_strlen (common_part, -1);
+ if (matching_chars < min_required_len)
+ {
+ g_free (common_part);
+ return NULL;
+ }
+
+ return common_part;
+}
+
+/**************** Custom printf ***********/
+
+typedef struct
+{
+ const char *start;
+ const char *end;
+ GString *format;
+ int arg_pos;
+ int width_pos;
+ int width_format_index;
+ int precision_pos;
+ int precision_format_index;
+} ConversionInfo;
+
+enum
+{
+ ARG_TYPE_INVALID,
+ ARG_TYPE_INT,
+ ARG_TYPE_LONG,
+ ARG_TYPE_LONG_LONG,
+ ARG_TYPE_SIZE,
+ ARG_TYPE_LONG_DOUBLE,
+ ARG_TYPE_DOUBLE,
+ ARG_TYPE_POINTER
+};
+
+#if !defined (EEL_OMIT_SELF_CHECK)
+
+void
+eel_self_check_string (void)
+{
+ EEL_CHECK_STRING_RESULT (eel_str_double_underscores (NULL), NULL);
+ EEL_CHECK_STRING_RESULT (eel_str_double_underscores (""), "");
+ EEL_CHECK_STRING_RESULT (eel_str_double_underscores ("_"), "__");
+ EEL_CHECK_STRING_RESULT (eel_str_double_underscores ("foo"), "foo");
+ EEL_CHECK_STRING_RESULT (eel_str_double_underscores ("foo_bar"), "foo__bar");
+ EEL_CHECK_STRING_RESULT (eel_str_double_underscores ("foo_bar_2"), "foo__bar__2");
+ EEL_CHECK_STRING_RESULT (eel_str_double_underscores ("_foo"), "__foo");
+ EEL_CHECK_STRING_RESULT (eel_str_double_underscores ("foo_"), "foo__");
+
+ EEL_CHECK_STRING_RESULT (eel_str_capitalize (NULL), NULL);
+ EEL_CHECK_STRING_RESULT (eel_str_capitalize (""), "");
+ EEL_CHECK_STRING_RESULT (eel_str_capitalize ("foo"), "Foo");
+ EEL_CHECK_STRING_RESULT (eel_str_capitalize ("Foo"), "Foo");
+
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("foo", 0), NULL);
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("foo", 1), "foo");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("foo", 3), "foo");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("foo", 4), "foo");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("foo", 5), "foo");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("foo", 6), "foo");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("foo", 7), "foo");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 0), NULL);
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 1), "a_much_longer_foo");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 2), "a_much_longer_foo");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 3), "a…o");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 4), "a…oo");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 5), "a_…oo");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 6), "a_…foo");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 7), "a_m…foo");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 8), "a_m…_foo");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 9), "a_mu…_foo");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_even", 8), "som…even");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_odd", 8), "som…_odd");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_even", 9), "some…even");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_odd", 9), "some…_odd");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_even", 10), "some…_even");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_odd", 10), "some…g_odd");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_even", 11), "somet…_even");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_odd", 11), "somet…g_odd");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_even", 12), "somet…g_even");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_odd", 12), "somet…ng_odd");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_even", 13), "someth…g_even");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_odd", 13), "something_odd");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_even", 14), "something_even");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_odd", 13), "something_odd");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("ääääääääää", 5), "ää…ää");
+ EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("あぃいぅうぇえぉ", 7), "あぃい…ぇえぉ");
+
+ EEL_CHECK_STRING_RESULT (eel_str_strip_substring_and_after (NULL, "bar"), NULL);
+ EEL_CHECK_STRING_RESULT (eel_str_strip_substring_and_after ("", "bar"), "");
+ EEL_CHECK_STRING_RESULT (eel_str_strip_substring_and_after ("foo", "bar"), "foo");
+ EEL_CHECK_STRING_RESULT (eel_str_strip_substring_and_after ("foo bar", "bar"), "foo ");
+ EEL_CHECK_STRING_RESULT (eel_str_strip_substring_and_after ("foo bar xxx", "bar"), "foo ");
+ EEL_CHECK_STRING_RESULT (eel_str_strip_substring_and_after ("bar", "bar"), "");
+
+ EEL_CHECK_STRING_RESULT (eel_str_replace_substring (NULL, "foo", NULL), NULL);
+ EEL_CHECK_STRING_RESULT (eel_str_replace_substring (NULL, "foo", "bar"), NULL);
+ EEL_CHECK_STRING_RESULT (eel_str_replace_substring ("bar", "foo", NULL), "bar");
+ EEL_CHECK_STRING_RESULT (eel_str_replace_substring ("", "foo", ""), "");
+ EEL_CHECK_STRING_RESULT (eel_str_replace_substring ("", "foo", "bar"), "");
+ EEL_CHECK_STRING_RESULT (eel_str_replace_substring ("bar", "foo", ""), "bar");
+ EEL_CHECK_STRING_RESULT (eel_str_replace_substring ("xxx", "x", "foo"), "foofoofoo");
+ EEL_CHECK_STRING_RESULT (eel_str_replace_substring ("fff", "f", "foo"), "foofoofoo");
+ EEL_CHECK_STRING_RESULT (eel_str_replace_substring ("foofoofoo", "foo", "f"), "fff");
+ EEL_CHECK_STRING_RESULT (eel_str_replace_substring ("foofoofoo", "f", ""), "oooooo");
+}
+
+#endif /* !EEL_OMIT_SELF_CHECK */
diff --git a/eel/eel-string.h b/eel/eel-string.h
new file mode 100644
index 0000000..a833750
--- /dev/null
+++ b/eel/eel-string.h
@@ -0,0 +1,79 @@
+/*
+ eel-string.h: String routines to augment <string.h>.
+
+ Copyright (C) 2000 Eazel, Inc.
+
+ The Gnome Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The Gnome Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the Gnome Library; see the file COPYING.LIB. If not,
+ see <http://www.gnu.org/licenses/>.
+
+ Authors: Darin Adler <darin@eazel.com>
+*/
+
+#pragma once
+
+#include <glib.h>
+#include <string.h>
+#include <stdarg.h>
+
+/* We use the "str" abbrevation to mean char * string, since
+ * "string" usually means g_string instead. We use the "istr"
+ * abbreviation to mean a case-insensitive char *.
+ */
+
+
+/* NULL is allowed for all the str parameters to these functions. */
+
+/* Escape function for '_' character. */
+char * eel_str_double_underscores (const char *str);
+
+/* Capitalize a string */
+char * eel_str_capitalize (const char *str);
+
+/**
+ * eel_str_middle_truncate:
+ * @string: the string to truncate
+ * @truncate_length: the length limit at which to truncate
+ *
+ * If @string is longer than @truncate_length, replaces the middle with an
+ * ellipsis so the resulting string is exactly @truncate_length characters
+ * in length. Otherwise, returns a copy of @string.
+ *
+ * Do not use to ellipsize whole labels, only substrings that appear in them,
+ * e.g. file names.
+ *
+ * Returns: @string, truncated at the middle to @truncate_length or a copy
+ * if it was not longer than @truncate_length.
+ */
+gchar *eel_str_middle_truncate (const gchar *string,
+ guint truncate_length);
+
+
+/* Remove all characters after the passed-in substring. */
+char * eel_str_strip_substring_and_after (const char *str,
+ const char *substring);
+
+/* Replace all occurrences of substring with replacement. */
+char * eel_str_replace_substring (const char *str,
+ const char *substring,
+ const char *replacement);
+
+/**
+ * eel_str_get_common_prefix:
+ * @str: set of strings
+ * @min_required_len: the minimum number of characters required in the prefix
+ *
+ * Returns: the common prefix for a set of strings, or NULL if there isn't a
+ * common prefix of length min_required_len
+ */
+char * eel_str_get_common_prefix (GList *strs, int min_required_len);
diff --git a/eel/eel-vfs-extensions.c b/eel/eel-vfs-extensions.c
new file mode 100644
index 0000000..afdf062
--- /dev/null
+++ b/eel/eel-vfs-extensions.c
@@ -0,0 +1,195 @@
+/* eel-vfs-extensions.c - gnome-vfs extensions. Its likely some of these will
+ * be part of gnome-vfs in the future.
+ *
+ * Copyright (C) 1999, 2000 Eazel, Inc.
+ *
+ * The Gnome Library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Gnome Library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with the Gnome Library; see the file COPYING.LIB. If not,
+ * see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Darin Adler <darin@eazel.com>
+ * Pavel Cisler <pavel@eazel.com>
+ * Mike Fleming <mfleming@eazel.com>
+ * John Sullivan <sullivan@eazel.com>
+ */
+
+#include <config.h>
+#include "eel-vfs-extensions.h"
+#include "eel-glib-extensions.h"
+#include "eel-lib-self-check-functions.h"
+
+#include <glib.h>
+#include <glib/gi18n-lib.h>
+#include <gio/gio.h>
+
+#include "eel-string.h"
+
+#include <string.h>
+#include <stdlib.h>
+
+gboolean
+eel_uri_is_starred (const gchar *uri)
+{
+ return g_str_has_prefix (uri, "starred:");
+}
+
+/* It also matches trashed folders inside Trash,
+ * use `eel_uri_is_trash_root` if that's not desirable. */
+gboolean
+eel_uri_is_trash (const char *uri)
+{
+ return g_str_has_prefix (uri, "trash:");
+}
+
+gboolean
+eel_uri_is_trash_root (const char *uri)
+{
+ return g_strcmp0 (uri, "trash:///") == 0;
+}
+
+gboolean
+eel_uri_is_recent (const char *uri)
+{
+ return g_str_has_prefix (uri, "recent:");
+}
+
+gboolean
+eel_uri_is_search (const char *uri)
+{
+ return g_str_has_prefix (uri, EEL_SEARCH_URI);
+}
+
+gboolean
+eel_uri_is_other_locations (const char *uri)
+{
+ return g_str_has_prefix (uri, "other-locations:");
+}
+
+gboolean
+eel_uri_is_in_xdg_dirs (const gchar *uri)
+{
+ GUserDirectory dir;
+ g_autoptr (GFile) location = NULL;
+ gboolean has_prefix = FALSE;
+
+ location = g_file_new_for_uri (uri);
+ for (dir = 0; dir < G_USER_N_DIRECTORIES; dir++)
+ {
+ g_autoptr (GFile) xdg_dir_location = NULL;
+ const gchar *path;
+
+ path = g_get_user_special_dir (dir);
+ if (path == NULL)
+ {
+ continue;
+ }
+
+ xdg_dir_location = g_file_new_for_path (path);
+ has_prefix = g_file_has_prefix (location, xdg_dir_location) ||
+ g_file_equal (location, xdg_dir_location);
+
+ if (has_prefix)
+ {
+ break;
+ }
+ }
+
+ return has_prefix;
+}
+
+char *
+eel_filename_get_extension_offset (const char *filename)
+{
+ char *end, *end2;
+ const char *start;
+
+ if (filename == NULL || filename[0] == '\0')
+ {
+ return NULL;
+ }
+
+ /* basename must have at least one char */
+ start = filename + 1;
+
+ end = strrchr (start, '.');
+ if (end == NULL || end[1] == '\0')
+ {
+ return NULL;
+ }
+
+ if (end != start)
+ {
+ if (strcmp (end, ".gz") == 0 ||
+ strcmp (end, ".bz2") == 0 ||
+ strcmp (end, ".sit") == 0 ||
+ strcmp (end, ".Z") == 0 ||
+ strcmp (end, ".bz") == 0 ||
+ strcmp (end, ".xz") == 0)
+ {
+ end2 = end - 1;
+ while (end2 > start &&
+ *end2 != '.')
+ {
+ end2--;
+ }
+ if (end2 != start)
+ {
+ end = end2;
+ }
+ }
+ }
+
+ return end;
+}
+
+char *
+eel_filename_strip_extension (const char *filename_with_extension)
+{
+ char *filename, *end;
+
+ if (filename_with_extension == NULL)
+ {
+ return NULL;
+ }
+
+ filename = g_strdup (filename_with_extension);
+ end = eel_filename_get_extension_offset (filename);
+
+ if (end && end != filename)
+ {
+ *end = '\0';
+ }
+
+ return filename;
+}
+
+void
+eel_filename_get_rename_region (const char *filename,
+ int *start_offset,
+ int *end_offset)
+{
+ char *filename_without_extension;
+
+ g_return_if_fail (start_offset != NULL);
+ g_return_if_fail (end_offset != NULL);
+
+ *start_offset = 0;
+ *end_offset = 0;
+
+ g_return_if_fail (filename != NULL);
+
+ filename_without_extension = eel_filename_strip_extension (filename);
+ *end_offset = g_utf8_strlen (filename_without_extension, -1);
+
+ g_free (filename_without_extension);
+}
diff --git a/eel/eel-vfs-extensions.h b/eel/eel-vfs-extensions.h
new file mode 100644
index 0000000..b90fc69
--- /dev/null
+++ b/eel/eel-vfs-extensions.h
@@ -0,0 +1,50 @@
+
+/* eel-vfs-extensions.h - gnome-vfs extensions. Its likely some of these will
+ be part of gnome-vfs in the future.
+
+ Copyright (C) 1999, 2000 Eazel, Inc.
+
+ The Gnome Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The Gnome Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the Gnome Library; see the file COPYING.LIB. If not,
+ see <http://www.gnu.org/licenses/>.
+
+ Authors: Darin Adler <darin@eazel.com>
+ Pavel Cisler <pavel@eazel.com>
+ Mike Fleming <mfleming@eazel.com>
+ John Sullivan <sullivan@eazel.com>
+*/
+
+#pragma once
+
+#include <glib.h>
+
+G_BEGIN_DECLS
+
+#define EEL_TRASH_URI "trash:"
+#define EEL_SEARCH_URI "x-nautilus-search:"
+
+gboolean eel_uri_is_starred (const char *uri);
+gboolean eel_uri_is_trash (const char *uri);
+gboolean eel_uri_is_trash_root (const char *uri);
+gboolean eel_uri_is_search (const char *uri);
+gboolean eel_uri_is_other_locations (const char *uri);
+gboolean eel_uri_is_recent (const char *uri);
+gboolean eel_uri_is_in_xdg_dirs (const char *uri);
+
+char * eel_filename_strip_extension (const char *filename);
+void eel_filename_get_rename_region (const char *filename,
+ int *start_offset,
+ int *end_offset);
+char * eel_filename_get_extension_offset (const char *filename);
+
+G_END_DECLS
diff --git a/eel/eel.h b/eel/eel.h
new file mode 100644
index 0000000..cf3cdda
--- /dev/null
+++ b/eel/eel.h
@@ -0,0 +1,32 @@
+
+/* eel.h
+
+ Copyright (C) 2001 Eazel, Inc.
+
+ The Gnome Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The Gnome Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the Gnome Library; see the file COPYING.LIB. If not,
+ see <http://www.gnu.org/licenses/>.
+
+ Authors: Maciej Stachowiak <mjs@eazel.com>
+*/
+
+#pragma once
+
+#include <eel/eel-art-extensions.h>
+#include <eel/eel-glib-extensions.h>
+#include <eel/eel-graphic-effects.h>
+#include <eel/eel-gtk-extensions.h>
+#include <eel/eel-self-checks.h>
+#include <eel/eel-stock-dialogs.h>
+#include <eel/eel-string.h>
+#include <eel/eel-vfs-extensions.h> \ No newline at end of file
diff --git a/eel/meson.build b/eel/meson.build
new file mode 100644
index 0000000..e5fa746
--- /dev/null
+++ b/eel/meson.build
@@ -0,0 +1,57 @@
+libeel_2_sources = [
+ 'eel-art-extensions.h',
+ 'eel-art-extensions.c',
+ 'eel-canvas.h',
+ 'eel-canvas.c',
+ 'eel-debug.h',
+ 'eel-debug.c',
+ 'eel-glib-extensions.h',
+ 'eel-graphic-effects.h',
+ 'eel-graphic-effects.c',
+ 'eel-gtk-extensions.h',
+ 'eel-self-checks.h',
+ 'eel-self-checks.c',
+ 'eel-stock-dialogs.h',
+ 'eel-stock-dialogs.c',
+ 'eel-string.h',
+ 'eel-string.c',
+ 'eel-vfs-extensions.h',
+ 'eel-vfs-extensions.c',
+ 'eel.h',
+ 'eel-gtk-extensions.c',
+ 'eel-lib-self-check-functions.h',
+ 'eel-lib-self-check-functions.c',
+]
+
+libeel_2_deps = [
+ config_h,
+ glib,
+ gtk,
+ libm
+]
+
+libeel_2 = static_library(
+ 'eel-2',
+ libeel_2_sources,
+ dependencies: libeel_2_deps,
+ include_directories: nautilus_include_dirs
+)
+
+eel_2 = declare_dependency(
+ link_with: libeel_2,
+ include_directories: nautilus_include_dirs,
+ dependencies: libeel_2_deps
+)
+
+check_eel = executable(
+ 'check-eel',
+ 'check-program.c',
+ dependencies: [
+ eel_2,
+ xml
+ ]
+)
+
+if get_option('tests') == 'all'
+ test('check-eel', check_eel)
+endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 19:30:57 +0000