Adding upstream version 2.10.36.upstream/2.10.36

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 513 insertions, 0 deletions

diff --git a/app/widgets/gimpdasheditor.c b/app/widgets/gimpdasheditor.c
new file mode 100644
index 0000000..c320929
--- /dev/null
+++ b/app/widgets/gimpdasheditor.c
@@ -0,0 +1,513 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpdasheditor.c
+ * Copyright (C) 2003 Simon Budig  <simon@gimp.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpmath/gimpmath.h"
+#include "libgimpconfig/gimpconfig.h"
+
+#include "widgets-types.h"
+
+#include "core/gimpdashpattern.h"
+#include "core/gimpstrokeoptions.h"
+
+#include "gimpdasheditor.h"
+
+
+#define MIN_WIDTH          64
+#define MIN_HEIGHT         20
+
+#define DEFAULT_N_SEGMENTS 24
+
+
+enum
+{
+  PROP_0,
+  PROP_STROKE_OPTIONS,
+  PROP_N_SEGMENTS,
+  PROP_LENGTH
+};
+
+
+static void gimp_dash_editor_finalize           (GObject        *object);
+static void gimp_dash_editor_set_property       (GObject        *object,
+                                                 guint           property_id,
+                                                 const GValue   *value,
+                                                 GParamSpec     *pspec);
+static void gimp_dash_editor_get_property       (GObject        *object,
+                                                 guint           property_id,
+                                                 GValue         *value,
+                                                 GParamSpec     *pspec);
+
+static void gimp_dash_editor_size_request       (GtkWidget      *widget,
+                                                 GtkRequisition *requisition);
+static gboolean gimp_dash_editor_expose         (GtkWidget      *widget,
+                                                 GdkEventExpose *event);
+static gboolean gimp_dash_editor_button_press   (GtkWidget      *widget,
+                                                 GdkEventButton *bevent);
+static gboolean gimp_dash_editor_button_release (GtkWidget      *widget,
+                                                 GdkEventButton *bevent);
+static gboolean gimp_dash_editor_motion_notify  (GtkWidget      *widget,
+                                                 GdkEventMotion *bevent);
+
+/* helper function */
+static void update_segments_from_options        (GimpDashEditor *editor);
+static void update_options_from_segments        (GimpDashEditor *editor);
+static void update_blocksize                    (GimpDashEditor *editor);
+static gint dash_x_to_index                     (GimpDashEditor *editor,
+                                                 gint            x);
+
+
+G_DEFINE_TYPE (GimpDashEditor, gimp_dash_editor, GTK_TYPE_DRAWING_AREA)
+
+#define parent_class gimp_dash_editor_parent_class
+
+
+static void
+gimp_dash_editor_class_init (GimpDashEditorClass *klass)
+{
+  GObjectClass   *object_class = G_OBJECT_CLASS (klass);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+  object_class->finalize     = gimp_dash_editor_finalize;
+  object_class->get_property = gimp_dash_editor_get_property;
+  object_class->set_property = gimp_dash_editor_set_property;
+
+  widget_class->size_request         = gimp_dash_editor_size_request;
+  widget_class->expose_event         = gimp_dash_editor_expose;
+  widget_class->button_press_event   = gimp_dash_editor_button_press;
+  widget_class->button_release_event = gimp_dash_editor_button_release;
+  widget_class->motion_notify_event  = gimp_dash_editor_motion_notify;
+
+  g_object_class_install_property (object_class, PROP_STROKE_OPTIONS,
+                                   g_param_spec_object ("stroke-options",
+                                                        NULL, NULL,
+                                                        GIMP_TYPE_STROKE_OPTIONS,
+                                                        GIMP_PARAM_READWRITE |
+                                                        G_PARAM_CONSTRUCT_ONLY));
+
+  g_object_class_install_property (object_class, PROP_N_SEGMENTS,
+                                   g_param_spec_int ("n-segments",
+                                                     NULL, NULL,
+                                                     2, 120, DEFAULT_N_SEGMENTS,
+                                                     GIMP_PARAM_READWRITE |
+                                                     G_PARAM_CONSTRUCT));
+
+  g_object_class_install_property (object_class, PROP_LENGTH,
+                                   g_param_spec_double ("dash-length",
+                                                        NULL, NULL,
+                                                        0.0, 2000.0,
+                                                        0.5 * DEFAULT_N_SEGMENTS,
+                                                        GIMP_PARAM_READWRITE |
+                                                        G_PARAM_CONSTRUCT));
+}
+
+static void
+gimp_dash_editor_init (GimpDashEditor *editor)
+{
+  editor->segments       = NULL;
+  editor->block_width    = 6;
+  editor->block_height   = 6;
+  editor->edit_mode      = TRUE;
+  editor->edit_button_x0 = 0;
+
+  gtk_widget_add_events (GTK_WIDGET (editor),
+                         GDK_BUTTON_PRESS_MASK   |
+                         GDK_BUTTON_RELEASE_MASK |
+                         GDK_BUTTON1_MOTION_MASK);
+}
+
+static void
+gimp_dash_editor_finalize (GObject *object)
+{
+  GimpDashEditor *editor = GIMP_DASH_EDITOR (object);
+
+  g_clear_object (&editor->stroke_options);
+  g_clear_pointer (&editor->segments, g_free);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gimp_dash_editor_set_property (GObject      *object,
+                               guint         property_id,
+                               const GValue *value,
+                               GParamSpec   *pspec)
+{
+  GimpDashEditor *editor = GIMP_DASH_EDITOR (object);
+
+  switch (property_id)
+    {
+    case PROP_STROKE_OPTIONS:
+      g_return_if_fail (editor->stroke_options == NULL);
+
+      editor->stroke_options = g_value_dup_object (value);
+      g_signal_connect_object (editor->stroke_options, "notify::dash-info",
+                               G_CALLBACK (update_segments_from_options),
+                               editor, G_CONNECT_SWAPPED);
+      break;
+
+    case PROP_N_SEGMENTS:
+      editor->n_segments = g_value_get_int (value);
+
+      if (editor->segments)
+        g_free (editor->segments);
+      editor->segments = g_new0 (gboolean, editor->n_segments);
+      break;
+
+    case PROP_LENGTH:
+      editor->dash_length = g_value_get_double (value);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+
+  update_segments_from_options (editor);
+}
+
+static void
+gimp_dash_editor_get_property (GObject      *object,
+                               guint         property_id,
+                               GValue       *value,
+                               GParamSpec   *pspec)
+{
+  GimpDashEditor *editor = GIMP_DASH_EDITOR (object);
+
+  switch (property_id)
+    {
+    case PROP_STROKE_OPTIONS:
+      g_value_set_object (value, editor->stroke_options);
+      break;
+    case PROP_N_SEGMENTS:
+      g_value_set_int (value, editor->n_segments);
+      break;
+    case PROP_LENGTH:
+      g_value_set_double (value, editor->dash_length);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_dash_editor_size_request (GtkWidget      *widget,
+                               GtkRequisition *requisition)
+{
+  GimpDashEditor *editor = GIMP_DASH_EDITOR (widget);
+
+  requisition->width  = MAX (editor->block_width * editor->n_segments + 20,
+                             MIN_WIDTH);
+  requisition->height = MAX (editor->block_height + 10, MIN_HEIGHT);
+}
+
+static gboolean
+gimp_dash_editor_expose (GtkWidget      *widget,
+                         GdkEventExpose *event)
+{
+  GimpDashEditor *editor = GIMP_DASH_EDITOR (widget);
+  GtkStyle       *style  = gtk_widget_get_style (widget);
+  cairo_t        *cr     = gdk_cairo_create (gtk_widget_get_window (widget));
+  GtkAllocation   allocation;
+  gint            x;
+  gint            w, h;
+
+  gtk_widget_get_allocation (widget, &allocation);
+
+  update_blocksize (editor);
+
+  gdk_cairo_rectangle (cr, &event->area);
+  cairo_clip (cr);
+
+  /*  draw the background  */
+
+  gdk_cairo_set_source_color (cr, &style->base[GTK_STATE_NORMAL]);
+  cairo_paint (cr);
+
+  w = editor->block_width;
+  h = editor->block_height;
+
+  editor->x0 = (allocation.width - w * editor->n_segments) / 2;
+  editor->y0 = (allocation.height - h) / 2;
+
+  /*  draw the dash segments  */
+
+  x = editor->x0 % w;
+
+  if (x > 0)
+    x -= w;
+
+  for (; x < editor->x0; x += w)
+    {
+      gint index = dash_x_to_index (editor, x);
+
+      if (editor->segments[index])
+        cairo_rectangle (cr, x, editor->y0, w, h);
+    }
+
+  gdk_cairo_set_source_color (cr, &style->text_aa[GTK_STATE_NORMAL]);
+  cairo_fill (cr);
+
+  for (; x < editor->x0 + editor->n_segments * w; x += w)
+    {
+      gint index = dash_x_to_index (editor, x);
+
+      if (editor->segments[index])
+        cairo_rectangle (cr, x, editor->y0, w, h);
+    }
+
+  gdk_cairo_set_source_color (cr, &style->text[GTK_STATE_NORMAL]);
+  cairo_fill (cr);
+
+  for (; x < allocation.width + w; x += w)
+    {
+      gint index = dash_x_to_index (editor, x);
+
+      if (editor->segments[index])
+        cairo_rectangle (cr, x, editor->y0, w, h);
+    }
+
+  gdk_cairo_set_source_color (cr, &style->text_aa[GTK_STATE_NORMAL]);
+  cairo_fill (cr);
+
+  /*  draw rulers  */
+
+  x = editor->x0 % w;
+
+  if (x > 0)
+    x -= w;
+
+  for (; x < allocation.width + w; x += w)
+    {
+      gint index = dash_x_to_index (editor, x);
+
+      if (editor->n_segments % 4 == 0 &&
+          (index + 1) % (editor->n_segments / 4) == 0)
+        {
+          cairo_move_to (cr, x + w - 0.5, editor->y0 - 2);
+          cairo_line_to (cr, x + w - 0.5, editor->y0 + h + 2);
+        }
+      else if (index % 2 == 1)
+        {
+          cairo_move_to (cr, x + w - 0.5, editor->y0 + 1);
+          cairo_line_to (cr, x + w - 0.5, editor->y0 + h - 1);
+        }
+      else
+        {
+          cairo_move_to (cr, x + w - 0.5, editor->y0 + h / 2 - 1);
+          cairo_line_to (cr, x + w - 0.5, editor->y0 + h / 2 + 1);
+        }
+    }
+
+  cairo_move_to (cr, editor->x0 - 0.5, editor->y0 - 1);
+  cairo_move_to (cr, editor->x0 - 0.5, editor->y0 + h);
+
+  gdk_cairo_set_source_color (cr, &style->text_aa[GTK_STATE_NORMAL]);
+  cairo_set_line_width (cr, 1.0);
+  cairo_stroke (cr);
+
+  cairo_destroy (cr);
+
+  return FALSE;
+}
+
+static gboolean
+gimp_dash_editor_button_press (GtkWidget      *widget,
+                               GdkEventButton *bevent)
+{
+  GimpDashEditor *editor = GIMP_DASH_EDITOR (widget);
+  gint            index;
+
+  if (bevent->button == 1 && bevent->type == GDK_BUTTON_PRESS)
+    {
+      gtk_grab_add (widget);
+
+      index = dash_x_to_index (editor, bevent->x);
+
+      editor->edit_mode = ! editor->segments [index];
+      editor->edit_button_x0 = bevent->x;
+
+      editor->segments [index] = editor->edit_mode;
+
+      gtk_widget_queue_draw (widget);
+    }
+
+  return TRUE;
+}
+
+static gboolean
+gimp_dash_editor_button_release (GtkWidget      *widget,
+                                 GdkEventButton *bevent)
+{
+  GimpDashEditor *editor = GIMP_DASH_EDITOR (widget);
+
+  if (bevent->button == 1)
+    {
+      gtk_grab_remove (widget);
+
+      update_options_from_segments (editor);
+    }
+
+  return TRUE;
+}
+
+static gboolean
+gimp_dash_editor_motion_notify (GtkWidget      *widget,
+                                GdkEventMotion *mevent)
+{
+  GimpDashEditor *editor = GIMP_DASH_EDITOR (widget);
+  gint            x, index;
+
+  index = dash_x_to_index (editor, mevent->x);
+  editor->segments [index] = editor->edit_mode;
+
+  if (mevent->x > editor->edit_button_x0)
+    {
+      for (x = editor->edit_button_x0; x < mevent->x; x += editor->block_width)
+        {
+          index = dash_x_to_index (editor, x);
+          editor->segments[index] = editor->edit_mode;
+        }
+    }
+
+  if (mevent->x < editor->edit_button_x0)
+    {
+      for (x = editor->edit_button_x0; x > mevent->x; x -= editor->block_width)
+        {
+          index = dash_x_to_index (editor, x);
+          editor->segments[index] = editor->edit_mode;
+        }
+    }
+
+  gtk_widget_queue_draw (widget);
+
+  return TRUE;
+}
+
+GtkWidget *
+gimp_dash_editor_new (GimpStrokeOptions *stroke_options)
+{
+  g_return_val_if_fail (GIMP_IS_STROKE_OPTIONS (stroke_options), NULL);
+
+  return g_object_new (GIMP_TYPE_DASH_EDITOR,
+                       "stroke-options", stroke_options,
+                       NULL);
+}
+
+void
+gimp_dash_editor_shift_right (GimpDashEditor *editor)
+{
+  gboolean swap;
+  gint     i;
+
+  g_return_if_fail (GIMP_IS_DASH_EDITOR (editor));
+  g_return_if_fail (editor->n_segments > 0);
+
+  swap = editor->segments[editor->n_segments - 1];
+  for (i = editor->n_segments - 1; i > 0; i--)
+    editor->segments[i] = editor->segments[i-1];
+  editor->segments[0] = swap;
+
+  update_options_from_segments (editor);
+}
+
+void
+gimp_dash_editor_shift_left (GimpDashEditor *editor)
+{
+  gboolean swap;
+  gint     i;
+
+  g_return_if_fail (GIMP_IS_DASH_EDITOR (editor));
+  g_return_if_fail (editor->n_segments > 0);
+
+  swap = editor->segments[0];
+  for (i = 1; i < editor->n_segments; i++)
+    editor->segments[i-1] = editor->segments[i];
+  editor->segments[editor->n_segments - 1] = swap;
+
+  update_options_from_segments (editor);
+}
+
+static void
+update_segments_from_options (GimpDashEditor *editor)
+{
+  GArray *dash_info;
+
+  if (editor->stroke_options == NULL || editor->segments == NULL)
+    return;
+
+  g_return_if_fail (GIMP_IS_STROKE_OPTIONS (editor->stroke_options));
+
+  gtk_widget_queue_draw (GTK_WIDGET (editor));
+
+  dash_info = gimp_stroke_options_get_dash_info (editor->stroke_options);
+
+  gimp_dash_pattern_fill_segments (dash_info,
+                                   editor->segments, editor->n_segments);
+}
+
+static void
+update_options_from_segments (GimpDashEditor *editor)
+{
+  GArray *pattern = gimp_dash_pattern_new_from_segments (editor->segments,
+                                                         editor->n_segments,
+                                                         editor->dash_length);
+
+  gimp_stroke_options_take_dash_pattern (editor->stroke_options,
+                                         GIMP_DASH_CUSTOM, pattern);
+}
+
+static void
+update_blocksize (GimpDashEditor *editor)
+{
+  GtkWidget     *widget = GTK_WIDGET (editor);
+  GtkAllocation  allocation;
+
+  gtk_widget_get_allocation (widget, &allocation);
+
+  editor->block_height = 6;
+
+  editor->block_width = MAX (ROUND (editor->dash_length /
+                                    editor->n_segments * editor->block_height),
+                             4);
+  editor->block_height = MIN (ROUND (((float) editor->block_width) *
+                                     editor->n_segments / editor->dash_length),
+                              allocation.height - 4);
+}
+
+static gint
+dash_x_to_index (GimpDashEditor *editor,
+                 gint            x)
+{
+  gint index = x - editor->x0;
+
+  while (index < 0)
+    index += editor->n_segments * editor->block_width;
+
+  index = (index / editor->block_width) % editor->n_segments;
+
+  return index;
+}