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-rw-r--r--app/display/gimpcanvasprogress.c459
1 files changed, 459 insertions, 0 deletions
diff --git a/app/display/gimpcanvasprogress.c b/app/display/gimpcanvasprogress.c
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+++ b/app/display/gimpcanvasprogress.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpcanvasprogress.c
+ * Copyright (C) 2010 Michael Natterer <mitch@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 "libgimpbase/gimpbase.h"
+#include "libgimpmath/gimpmath.h"
+
+#include "display-types.h"
+
+#include "core/gimpprogress.h"
+
+#include "gimpcanvas.h"
+#include "gimpcanvas-style.h"
+#include "gimpcanvasitem-utils.h"
+#include "gimpcanvasprogress.h"
+#include "gimpdisplayshell.h"
+
+
+#define BORDER 5
+#define RADIUS 20
+
+#define MIN_UPDATE_INTERVAL 50000 /* microseconds */
+
+
+enum
+{
+ PROP_0,
+ PROP_ANCHOR,
+ PROP_X,
+ PROP_Y
+};
+
+
+typedef struct _GimpCanvasProgressPrivate GimpCanvasProgressPrivate;
+
+struct _GimpCanvasProgressPrivate
+{
+ GimpHandleAnchor anchor;
+ gdouble x;
+ gdouble y;
+
+ gchar *text;
+ gdouble value;
+
+ guint64 last_update_time;
+};
+
+#define GET_PRIVATE(progress) \
+ ((GimpCanvasProgressPrivate *) gimp_canvas_progress_get_instance_private ((GimpCanvasProgress *) (progress)))
+
+
+/* local function prototypes */
+
+static void gimp_canvas_progress_iface_init (GimpProgressInterface *iface);
+
+static void gimp_canvas_progress_finalize (GObject *object);
+static void gimp_canvas_progress_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void gimp_canvas_progress_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec);
+static void gimp_canvas_progress_draw (GimpCanvasItem *item,
+ cairo_t *cr);
+static cairo_region_t * gimp_canvas_progress_get_extents (GimpCanvasItem *item);
+static gboolean gimp_canvas_progress_hit (GimpCanvasItem *item,
+ gdouble x,
+ gdouble y);
+
+static GimpProgress * gimp_canvas_progress_start (GimpProgress *progress,
+ gboolean cancellable,
+ const gchar *message);
+static void gimp_canvas_progress_end (GimpProgress *progress);
+static gboolean gimp_canvas_progress_is_active (GimpProgress *progress);
+static void gimp_canvas_progress_set_text (GimpProgress *progress,
+ const gchar *message);
+static void gimp_canvas_progress_set_value (GimpProgress *progress,
+ gdouble percentage);
+static gdouble gimp_canvas_progress_get_value (GimpProgress *progress);
+static void gimp_canvas_progress_pulse (GimpProgress *progress);
+static gboolean gimp_canvas_progress_message (GimpProgress *progress,
+ Gimp *gimp,
+ GimpMessageSeverity severity,
+ const gchar *domain,
+ const gchar *message);
+
+
+G_DEFINE_TYPE_WITH_CODE (GimpCanvasProgress, gimp_canvas_progress,
+ GIMP_TYPE_CANVAS_ITEM,
+ G_ADD_PRIVATE (GimpCanvasProgress)
+ G_IMPLEMENT_INTERFACE (GIMP_TYPE_PROGRESS,
+ gimp_canvas_progress_iface_init))
+
+#define parent_class gimp_canvas_progress_parent_class
+
+
+static void
+gimp_canvas_progress_class_init (GimpCanvasProgressClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GimpCanvasItemClass *item_class = GIMP_CANVAS_ITEM_CLASS (klass);
+
+ object_class->finalize = gimp_canvas_progress_finalize;
+ object_class->set_property = gimp_canvas_progress_set_property;
+ object_class->get_property = gimp_canvas_progress_get_property;
+
+ item_class->draw = gimp_canvas_progress_draw;
+ item_class->get_extents = gimp_canvas_progress_get_extents;
+ item_class->hit = gimp_canvas_progress_hit;
+
+ g_object_class_install_property (object_class, PROP_ANCHOR,
+ g_param_spec_enum ("anchor", NULL, NULL,
+ GIMP_TYPE_HANDLE_ANCHOR,
+ GIMP_HANDLE_ANCHOR_CENTER,
+ GIMP_PARAM_READWRITE));
+
+ g_object_class_install_property (object_class, PROP_X,
+ g_param_spec_double ("x", NULL, NULL,
+ -GIMP_MAX_IMAGE_SIZE,
+ GIMP_MAX_IMAGE_SIZE, 0,
+ GIMP_PARAM_READWRITE));
+
+ g_object_class_install_property (object_class, PROP_Y,
+ g_param_spec_double ("y", NULL, NULL,
+ -GIMP_MAX_IMAGE_SIZE,
+ GIMP_MAX_IMAGE_SIZE, 0,
+ GIMP_PARAM_READWRITE));
+}
+
+static void
+gimp_canvas_progress_iface_init (GimpProgressInterface *iface)
+{
+ iface->start = gimp_canvas_progress_start;
+ iface->end = gimp_canvas_progress_end;
+ iface->is_active = gimp_canvas_progress_is_active;
+ iface->set_text = gimp_canvas_progress_set_text;
+ iface->set_value = gimp_canvas_progress_set_value;
+ iface->get_value = gimp_canvas_progress_get_value;
+ iface->pulse = gimp_canvas_progress_pulse;
+ iface->message = gimp_canvas_progress_message;
+}
+
+static void
+gimp_canvas_progress_init (GimpCanvasProgress *progress)
+{
+}
+
+static void
+gimp_canvas_progress_finalize (GObject *object)
+{
+ GimpCanvasProgressPrivate *private = GET_PRIVATE (object);
+
+ g_clear_pointer (&private->text, g_free);
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gimp_canvas_progress_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GimpCanvasProgressPrivate *private = GET_PRIVATE (object);
+
+ switch (property_id)
+ {
+ case PROP_ANCHOR:
+ private->anchor = g_value_get_enum (value);
+ break;
+ case PROP_X:
+ private->x = g_value_get_double (value);
+ break;
+ case PROP_Y:
+ private->y = g_value_get_double (value);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gimp_canvas_progress_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GimpCanvasProgressPrivate *private = GET_PRIVATE (object);
+
+ switch (property_id)
+ {
+ case PROP_ANCHOR:
+ g_value_set_enum (value, private->anchor);
+ break;
+ case PROP_X:
+ g_value_set_double (value, private->x);
+ break;
+ case PROP_Y:
+ g_value_set_double (value, private->y);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static PangoLayout *
+gimp_canvas_progress_transform (GimpCanvasItem *item,
+ gdouble *x,
+ gdouble *y,
+ gint *width,
+ gint *height)
+{
+ GimpCanvasProgressPrivate *private = GET_PRIVATE (item);
+ GtkWidget *canvas = gimp_canvas_item_get_canvas (item);
+ PangoLayout *layout;
+
+ layout = gimp_canvas_get_layout (GIMP_CANVAS (canvas), "%s",
+ private->text);
+
+ pango_layout_get_pixel_size (layout, width, height);
+
+ *width = MAX (*width, 2 * RADIUS);
+
+ *width += 2 * BORDER;
+ *height += 3 * BORDER + 2 * RADIUS;
+
+ gimp_canvas_item_transform_xy_f (item,
+ private->x, private->y,
+ x, y);
+
+ gimp_canvas_item_shift_to_north_west (private->anchor,
+ *x, *y,
+ *width,
+ *height,
+ x, y);
+
+ *x = floor (*x);
+ *y = floor (*y);
+
+ return layout;
+}
+
+static void
+gimp_canvas_progress_draw (GimpCanvasItem *item,
+ cairo_t *cr)
+{
+ GimpCanvasProgressPrivate *private = GET_PRIVATE (item);
+ GtkWidget *canvas = gimp_canvas_item_get_canvas (item);
+ gdouble x, y;
+ gint width, height;
+
+ gimp_canvas_progress_transform (item, &x, &y, &width, &height);
+
+ cairo_move_to (cr, x, y);
+ cairo_line_to (cr, x + width, y);
+ cairo_line_to (cr, x + width, y + height - BORDER - 2 * RADIUS);
+ cairo_line_to (cr, x + 2 * BORDER + 2 * RADIUS, y + height - BORDER - 2 * RADIUS);
+ cairo_arc (cr, x + BORDER + RADIUS, y + height - BORDER - RADIUS,
+ BORDER + RADIUS, 0, G_PI);
+ cairo_close_path (cr);
+
+ _gimp_canvas_item_fill (item, cr);
+
+ cairo_move_to (cr, x + BORDER, y + BORDER);
+ cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 1.0);
+ pango_cairo_show_layout (cr,
+ gimp_canvas_get_layout (GIMP_CANVAS (canvas),
+ "%s", private->text));
+
+ gimp_canvas_set_tool_bg_style (gimp_canvas_item_get_canvas (item), cr);
+ cairo_arc (cr, x + BORDER + RADIUS, y + height - BORDER - RADIUS,
+ RADIUS, - G_PI / 2.0, 2 * G_PI - G_PI / 2.0);
+ cairo_fill (cr);
+
+ cairo_set_source_rgba (cr, 0.0, 1.0, 0.0, 1.0);
+ cairo_move_to (cr, x + BORDER + RADIUS, y + height - BORDER - RADIUS);
+ cairo_arc (cr, x + BORDER + RADIUS, y + height - BORDER - RADIUS,
+ RADIUS, - G_PI / 2.0, 2 * G_PI * private->value - G_PI / 2.0);
+ cairo_fill (cr);
+}
+
+static cairo_region_t *
+gimp_canvas_progress_get_extents (GimpCanvasItem *item)
+{
+ cairo_rectangle_int_t rectangle;
+ gdouble x, y;
+ gint width, height;
+
+ gimp_canvas_progress_transform (item, &x, &y, &width, &height);
+
+ /* add 1px on each side because fill()'s default impl does the same */
+ rectangle.x = (gint) x - 1;
+ rectangle.y = (gint) y - 1;
+ rectangle.width = width + 2;
+ rectangle.height = height + 2;
+
+ return cairo_region_create_rectangle (&rectangle);
+}
+
+static gboolean
+gimp_canvas_progress_hit (GimpCanvasItem *item,
+ gdouble x,
+ gdouble y)
+{
+ gdouble px, py;
+ gint pwidth, pheight;
+ gdouble tx, ty;
+
+ gimp_canvas_progress_transform (item, &px, &py, &pwidth, &pheight);
+ gimp_canvas_item_transform_xy_f (item, x, y, &tx, &ty);
+
+ pheight -= BORDER + 2 * RADIUS;
+
+ return (tx >= px && tx < (px + pwidth) &&
+ ty >= py && ty < (py + pheight));
+}
+
+static GimpProgress *
+gimp_canvas_progress_start (GimpProgress *progress,
+ gboolean cancellable,
+ const gchar *message)
+{
+ GimpCanvasProgressPrivate *private = GET_PRIVATE (progress);
+
+ gimp_canvas_progress_set_text (progress, message);
+
+ private->last_update_time = g_get_monotonic_time ();
+
+ return progress;
+}
+
+static void
+gimp_canvas_progress_end (GimpProgress *progress)
+{
+}
+
+static gboolean
+gimp_canvas_progress_is_active (GimpProgress *progress)
+{
+ return TRUE;
+}
+
+static void
+gimp_canvas_progress_set_text (GimpProgress *progress,
+ const gchar *message)
+{
+ GimpCanvasProgressPrivate *private = GET_PRIVATE (progress);
+ cairo_region_t *old_region;
+ cairo_region_t *new_region;
+
+ old_region = gimp_canvas_item_get_extents (GIMP_CANVAS_ITEM (progress));
+
+ if (private->text)
+ g_free (private->text);
+
+ private->text = g_strdup (message);
+
+ new_region = gimp_canvas_item_get_extents (GIMP_CANVAS_ITEM (progress));
+
+ cairo_region_union (new_region, old_region);
+ cairo_region_destroy (old_region);
+
+ _gimp_canvas_item_update (GIMP_CANVAS_ITEM (progress), new_region);
+
+ cairo_region_destroy (new_region);
+}
+
+static void
+gimp_canvas_progress_set_value (GimpProgress *progress,
+ gdouble percentage)
+{
+ GimpCanvasProgressPrivate *private = GET_PRIVATE (progress);
+
+ if (percentage != private->value)
+ {
+ guint64 time = g_get_monotonic_time ();
+
+ private->value = percentage;
+
+ if (time - private->last_update_time >= MIN_UPDATE_INTERVAL)
+ {
+ cairo_region_t *region;
+
+ private->last_update_time = time;
+
+ region = gimp_canvas_item_get_extents (GIMP_CANVAS_ITEM (progress));
+
+ _gimp_canvas_item_update (GIMP_CANVAS_ITEM (progress), region);
+
+ cairo_region_destroy (region);
+ }
+ }
+}
+
+static gdouble
+gimp_canvas_progress_get_value (GimpProgress *progress)
+{
+ GimpCanvasProgressPrivate *private = GET_PRIVATE (progress);
+
+ return private->value;
+}
+
+static void
+gimp_canvas_progress_pulse (GimpProgress *progress)
+{
+}
+
+static gboolean
+gimp_canvas_progress_message (GimpProgress *progress,
+ Gimp *gimp,
+ GimpMessageSeverity severity,
+ const gchar *domain,
+ const gchar *message)
+{
+ return FALSE;
+}
+
+GimpCanvasItem *
+gimp_canvas_progress_new (GimpDisplayShell *shell,
+ GimpHandleAnchor anchor,
+ gdouble x,
+ gdouble y)
+{
+ g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), NULL);
+
+ return g_object_new (GIMP_TYPE_CANVAS_PROGRESS,
+ "shell", shell,
+ "anchor", anchor,
+ "x", x,
+ "y", y,
+ NULL);
+}
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