Adding upstream version 2.10.22.upstream/2.10.22upstream

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

1 files changed, 369 insertions, 0 deletions

diff --git a/app/display/gimpcanvasarc.c b/app/display/gimpcanvasarc.c
new file mode 100644
index 0000000..a4041b2
--- /dev/null
+++ b/app/display/gimpcanvasarc.c
@@ -0,0 +1,369 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpcanvasarc.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/gimp-cairo.h"
+
+#include "gimpcanvasarc.h"
+#include "gimpdisplayshell.h"
+
+
+enum
+{
+  PROP_0,
+  PROP_CENTER_X,
+  PROP_CENTER_Y,
+  PROP_RADIUS_X,
+  PROP_RADIUS_Y,
+  PROP_START_ANGLE,
+  PROP_SLICE_ANGLE,
+  PROP_FILLED
+};
+
+
+typedef struct _GimpCanvasArcPrivate GimpCanvasArcPrivate;
+
+struct _GimpCanvasArcPrivate
+{
+  gdouble  center_x;
+  gdouble  center_y;
+  gdouble  radius_x;
+  gdouble  radius_y;
+  gdouble  start_angle;
+  gdouble  slice_angle;
+  gboolean filled;
+};
+
+#define GET_PRIVATE(arc) \
+        ((GimpCanvasArcPrivate *) gimp_canvas_arc_get_instance_private ((GimpCanvasArc *) (arc)))
+
+
+/*  local function prototypes  */
+
+static void             gimp_canvas_arc_set_property (GObject        *object,
+                                                      guint           property_id,
+                                                      const GValue   *value,
+                                                      GParamSpec     *pspec);
+static void             gimp_canvas_arc_get_property (GObject        *object,
+                                                      guint           property_id,
+                                                      GValue         *value,
+                                                      GParamSpec     *pspec);
+static void             gimp_canvas_arc_draw         (GimpCanvasItem *item,
+                                                      cairo_t        *cr);
+static cairo_region_t * gimp_canvas_arc_get_extents  (GimpCanvasItem *item);
+
+
+G_DEFINE_TYPE_WITH_PRIVATE (GimpCanvasArc, gimp_canvas_arc,
+                            GIMP_TYPE_CANVAS_ITEM)
+
+#define parent_class gimp_canvas_arc_parent_class
+
+
+static void
+gimp_canvas_arc_class_init (GimpCanvasArcClass *klass)
+{
+  GObjectClass        *object_class = G_OBJECT_CLASS (klass);
+  GimpCanvasItemClass *item_class   = GIMP_CANVAS_ITEM_CLASS (klass);
+
+  object_class->set_property = gimp_canvas_arc_set_property;
+  object_class->get_property = gimp_canvas_arc_get_property;
+
+  item_class->draw           = gimp_canvas_arc_draw;
+  item_class->get_extents    = gimp_canvas_arc_get_extents;
+
+  g_object_class_install_property (object_class, PROP_CENTER_X,
+                                   g_param_spec_double ("center-x", NULL, NULL,
+                                                        -GIMP_MAX_IMAGE_SIZE,
+                                                        GIMP_MAX_IMAGE_SIZE, 0,
+                                                        GIMP_PARAM_READWRITE));
+
+  g_object_class_install_property (object_class, PROP_CENTER_Y,
+                                   g_param_spec_double ("center-y", NULL, NULL,
+                                                        -GIMP_MAX_IMAGE_SIZE,
+                                                        GIMP_MAX_IMAGE_SIZE, 0,
+                                                        GIMP_PARAM_READWRITE));
+
+  g_object_class_install_property (object_class, PROP_RADIUS_X,
+                                   g_param_spec_double ("radius-x", NULL, NULL,
+                                                        0, GIMP_MAX_IMAGE_SIZE, 0,
+                                                        GIMP_PARAM_READWRITE));
+
+  g_object_class_install_property (object_class, PROP_RADIUS_Y,
+                                   g_param_spec_double ("radius-y", NULL, NULL,
+                                                        0, GIMP_MAX_IMAGE_SIZE, 0,
+                                                        GIMP_PARAM_READWRITE));
+
+  g_object_class_install_property (object_class, PROP_START_ANGLE,
+                                   g_param_spec_double ("start-angle", NULL, NULL,
+                                                        -1000, 1000, 0,
+                                                        GIMP_PARAM_READWRITE));
+
+  g_object_class_install_property (object_class, PROP_SLICE_ANGLE,
+                                   g_param_spec_double ("slice-angle", NULL, NULL,
+                                                        -1000, 1000, 2 * G_PI,
+                                                        GIMP_PARAM_READWRITE));
+
+  g_object_class_install_property (object_class, PROP_FILLED,
+                                   g_param_spec_boolean ("filled", NULL, NULL,
+                                                         FALSE,
+                                                         GIMP_PARAM_READWRITE));
+}
+
+static void
+gimp_canvas_arc_init (GimpCanvasArc *arc)
+{
+}
+
+static void
+gimp_canvas_arc_set_property (GObject      *object,
+                              guint         property_id,
+                              const GValue *value,
+                              GParamSpec   *pspec)
+{
+  GimpCanvasArcPrivate *private = GET_PRIVATE (object);
+
+  switch (property_id)
+    {
+    case PROP_CENTER_X:
+      private->center_x = g_value_get_double (value);
+      break;
+    case PROP_CENTER_Y:
+      private->center_y = g_value_get_double (value);
+      break;
+    case PROP_RADIUS_X:
+      private->radius_x = g_value_get_double (value);
+      break;
+    case PROP_RADIUS_Y:
+      private->radius_y = g_value_get_double (value);
+      break;
+    case PROP_START_ANGLE:
+      private->start_angle = g_value_get_double (value);
+      break;
+    case PROP_SLICE_ANGLE:
+      private->slice_angle = g_value_get_double (value);
+      break;
+    case PROP_FILLED:
+      private->filled = g_value_get_boolean (value);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_canvas_arc_get_property (GObject    *object,
+                              guint       property_id,
+                              GValue     *value,
+                              GParamSpec *pspec)
+{
+  GimpCanvasArcPrivate *private = GET_PRIVATE (object);
+
+  switch (property_id)
+    {
+    case PROP_CENTER_X:
+      g_value_set_double (value, private->center_x);
+      break;
+    case PROP_CENTER_Y:
+      g_value_set_double (value, private->center_y);
+      break;
+    case PROP_RADIUS_X:
+      g_value_set_double (value, private->radius_x);
+      break;
+    case PROP_RADIUS_Y:
+      g_value_set_double (value, private->radius_y);
+      break;
+    case PROP_START_ANGLE:
+      g_value_set_double (value, private->start_angle);
+      break;
+    case PROP_SLICE_ANGLE:
+      g_value_set_double (value, private->slice_angle);
+      break;
+    case PROP_FILLED:
+      g_value_set_boolean (value, private->filled);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_canvas_arc_transform (GimpCanvasItem *item,
+                           gdouble        *center_x,
+                           gdouble        *center_y,
+                           gdouble        *radius_x,
+                           gdouble        *radius_y)
+{
+  GimpCanvasArcPrivate *private = GET_PRIVATE (item);
+  gdouble               x1, y1;
+  gdouble               x2, y2;
+
+  gimp_canvas_item_transform_xy_f (item,
+                                   private->center_x - private->radius_x,
+                                   private->center_y - private->radius_y,
+                                   &x1, &y1);
+  gimp_canvas_item_transform_xy_f (item,
+                                   private->center_x + private->radius_x,
+                                   private->center_y + private->radius_y,
+                                   &x2, &y2);
+
+  x1 = floor (x1);
+  y1 = floor (y1);
+  x2 = ceil (x2);
+  y2 = ceil (y2);
+
+  *center_x = (x1 + x2) / 2.0;
+  *center_y = (y1 + y2) / 2.0;
+
+  *radius_x = (x2 - x1) / 2.0;
+  *radius_y = (y2 - y1) / 2.0;
+
+  if (! private->filled)
+    {
+      *radius_x = MAX (*radius_x - 0.5, 0.0);
+      *radius_y = MAX (*radius_y - 0.5, 0.0);
+    }
+
+  /* avoid cairo_scale (cr, 0.0, 0.0) */
+  if (*radius_x == 0.0) *radius_x = 0.000001;
+  if (*radius_y == 0.0) *radius_y = 0.000001;
+}
+
+static void
+gimp_canvas_arc_draw (GimpCanvasItem *item,
+                      cairo_t        *cr)
+{
+  GimpCanvasArcPrivate *private = GET_PRIVATE (item);
+  gdouble               center_x, center_y;
+  gdouble               radius_x, radius_y;
+
+  gimp_canvas_arc_transform (item,
+                             &center_x, &center_y,
+                             &radius_x, &radius_y);
+
+  cairo_save (cr);
+  cairo_translate (cr, center_x, center_y);
+  cairo_scale (cr, radius_x, radius_y);
+  gimp_cairo_arc (cr, 0.0, 0.0, 1.0,
+                  private->start_angle, private->slice_angle);
+  cairo_restore (cr);
+
+  if (private->filled)
+    _gimp_canvas_item_fill (item, cr);
+  else
+    _gimp_canvas_item_stroke (item, cr);
+}
+
+static cairo_region_t *
+gimp_canvas_arc_get_extents (GimpCanvasItem *item)
+{
+  GimpCanvasArcPrivate  *private = GET_PRIVATE (item);
+  cairo_region_t        *region;
+  cairo_rectangle_int_t  rectangle;
+  gdouble                center_x, center_y;
+  gdouble                radius_x, radius_y;
+
+  gimp_canvas_arc_transform (item,
+                             &center_x, &center_y,
+                             &radius_x, &radius_y);
+
+  rectangle.x      = floor (center_x - radius_x - 1.5);
+  rectangle.y      = floor (center_y - radius_y - 1.5);
+  rectangle.width  = ceil (center_x + radius_x + 1.5) - rectangle.x;
+  rectangle.height = ceil (center_y + radius_y + 1.5) - rectangle.y;
+
+  region = cairo_region_create_rectangle (&rectangle);
+
+  if (! private->filled &&
+      rectangle.width > 64 * 1.43 &&
+      rectangle.height > 64 * 1.43)
+    {
+      radius_x *= 0.7;
+      radius_y *= 0.7;
+
+      rectangle.x      = ceil (center_x - radius_x + 1.5);
+      rectangle.y      = ceil (center_y - radius_y + 1.5);
+      rectangle.width  = floor (center_x + radius_x - 1.5) - rectangle.x;
+      rectangle.height = floor (center_y + radius_y - 1.5) - rectangle.y;
+
+      cairo_region_subtract_rectangle (region, &rectangle);
+    }
+
+  return region;
+}
+
+GimpCanvasItem *
+gimp_canvas_arc_new (GimpDisplayShell *shell,
+                     gdouble          center_x,
+                     gdouble          center_y,
+                     gdouble          radius_x,
+                     gdouble          radius_y,
+                     gdouble          start_angle,
+                     gdouble          slice_angle,
+                     gboolean         filled)
+{
+  g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), NULL);
+
+  return g_object_new (GIMP_TYPE_CANVAS_ARC,
+                       "shell",       shell,
+                       "center-x",    center_x,
+                       "center-y",    center_y,
+                       "radius-x",    radius_x,
+                       "radius-y",    radius_y,
+                       "start-angle", start_angle,
+                       "slice-angle", slice_angle,
+                       "filled",      filled,
+                       NULL);
+}
+
+void
+gimp_canvas_arc_set (GimpCanvasItem *arc,
+                     gdouble         center_x,
+                     gdouble         center_y,
+                     gdouble         radius_x,
+                     gdouble         radius_y,
+                     gdouble         start_angle,
+                     gdouble         slice_angle)
+{
+  g_return_if_fail (GIMP_IS_CANVAS_ARC (arc));
+
+  gimp_canvas_item_begin_change (arc);
+  g_object_set (arc,
+                "center-x",    center_x,
+                "center-y",    center_y,
+                "radius-x",    radius_x,
+                "radius-y",    radius_y,
+                "start-angle", start_angle,
+                "slice-angle", slice_angle,
+                NULL);
+  gimp_canvas_item_end_change (arc);
+}