Adding upstream version 2.10.36.upstream/2.10.36

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

1 files changed, 384 insertions, 0 deletions

diff --git a/app/display/gimpcanvasboundary.c b/app/display/gimpcanvasboundary.c
new file mode 100644
index 0000000..a6cab9d
--- /dev/null
+++ b/app/display/gimpcanvasboundary.c
@@ -0,0 +1,384 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpcanvasboundary.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 "core/gimp-transform-utils.h"
+#include "core/gimpboundary.h"
+#include "core/gimpparamspecs.h"
+
+#include "gimpcanvasboundary.h"
+#include "gimpdisplayshell.h"
+
+
+enum
+{
+  PROP_0,
+  PROP_SEGS,
+  PROP_TRANSFORM,
+  PROP_OFFSET_X,
+  PROP_OFFSET_Y
+};
+
+
+typedef struct _GimpCanvasBoundaryPrivate GimpCanvasBoundaryPrivate;
+
+struct _GimpCanvasBoundaryPrivate
+{
+  GimpBoundSeg *segs;
+  gint          n_segs;
+  GimpMatrix3  *transform;
+  gdouble       offset_x;
+  gdouble       offset_y;
+};
+
+#define GET_PRIVATE(boundary) \
+        ((GimpCanvasBoundaryPrivate *) gimp_canvas_boundary_get_instance_private ((GimpCanvasBoundary *) (boundary)))
+
+
+/*  local function prototypes  */
+
+static void             gimp_canvas_boundary_finalize     (GObject        *object);
+static void             gimp_canvas_boundary_set_property (GObject        *object,
+                                                           guint           property_id,
+                                                           const GValue   *value,
+                                                           GParamSpec     *pspec);
+static void             gimp_canvas_boundary_get_property (GObject        *object,
+                                                           guint           property_id,
+                                                           GValue         *value,
+                                                           GParamSpec     *pspec);
+static void             gimp_canvas_boundary_draw         (GimpCanvasItem *item,
+                                                           cairo_t        *cr);
+static cairo_region_t * gimp_canvas_boundary_get_extents  (GimpCanvasItem *item);
+
+
+G_DEFINE_TYPE_WITH_PRIVATE (GimpCanvasBoundary, gimp_canvas_boundary,
+                            GIMP_TYPE_CANVAS_ITEM)
+
+#define parent_class gimp_canvas_boundary_parent_class
+
+
+static void
+gimp_canvas_boundary_class_init (GimpCanvasBoundaryClass *klass)
+{
+  GObjectClass        *object_class = G_OBJECT_CLASS (klass);
+  GimpCanvasItemClass *item_class   = GIMP_CANVAS_ITEM_CLASS (klass);
+
+  object_class->finalize     = gimp_canvas_boundary_finalize;
+  object_class->set_property = gimp_canvas_boundary_set_property;
+  object_class->get_property = gimp_canvas_boundary_get_property;
+
+  item_class->draw           = gimp_canvas_boundary_draw;
+  item_class->get_extents    = gimp_canvas_boundary_get_extents;
+
+  g_object_class_install_property (object_class, PROP_SEGS,
+                                   gimp_param_spec_array ("segs", NULL, NULL,
+                                                          GIMP_PARAM_READWRITE));
+
+  g_object_class_install_property (object_class, PROP_TRANSFORM,
+                                   g_param_spec_pointer ("transform", NULL, NULL,
+                                                         GIMP_PARAM_READWRITE));
+
+  g_object_class_install_property (object_class, PROP_OFFSET_X,
+                                   g_param_spec_double ("offset-x", NULL, NULL,
+                                                        -GIMP_MAX_IMAGE_SIZE,
+                                                        GIMP_MAX_IMAGE_SIZE, 0,
+                                                        GIMP_PARAM_READWRITE));
+
+  g_object_class_install_property (object_class, PROP_OFFSET_Y,
+                                   g_param_spec_double ("offset-y", NULL, NULL,
+                                                        -GIMP_MAX_IMAGE_SIZE,
+                                                        GIMP_MAX_IMAGE_SIZE, 0,
+                                                        GIMP_PARAM_READWRITE));
+}
+
+static void
+gimp_canvas_boundary_init (GimpCanvasBoundary *boundary)
+{
+  gimp_canvas_item_set_line_cap (GIMP_CANVAS_ITEM (boundary),
+                                 CAIRO_LINE_CAP_SQUARE);
+}
+
+static void
+gimp_canvas_boundary_finalize (GObject *object)
+{
+  GimpCanvasBoundaryPrivate *private = GET_PRIVATE (object);
+
+  g_clear_pointer (&private->segs, g_free);
+  private->n_segs = 0;
+
+  g_clear_pointer (&private->transform, g_free);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gimp_canvas_boundary_set_property (GObject      *object,
+                                   guint         property_id,
+                                   const GValue *value,
+                                   GParamSpec   *pspec)
+{
+  GimpCanvasBoundaryPrivate *private = GET_PRIVATE (object);
+
+  switch (property_id)
+    {
+    case PROP_SEGS:
+      break;
+
+    case PROP_TRANSFORM:
+      {
+        GimpMatrix3 *transform = g_value_get_pointer (value);
+        if (private->transform)
+          g_free (private->transform);
+        if (transform)
+          private->transform = g_memdup (transform, sizeof (GimpMatrix3));
+        else
+          private->transform = NULL;
+      }
+      break;
+
+    case PROP_OFFSET_X:
+      private->offset_x = g_value_get_double (value);
+      break;
+    case PROP_OFFSET_Y:
+      private->offset_y = g_value_get_double (value);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_canvas_boundary_get_property (GObject    *object,
+                                   guint       property_id,
+                                   GValue     *value,
+                                   GParamSpec *pspec)
+{
+  GimpCanvasBoundaryPrivate *private = GET_PRIVATE (object);
+
+  switch (property_id)
+    {
+    case PROP_SEGS:
+      break;
+
+    case PROP_TRANSFORM:
+      g_value_set_pointer (value, private->transform);
+      break;
+
+    case PROP_OFFSET_X:
+      g_value_set_double (value, private->offset_x);
+      break;
+    case PROP_OFFSET_Y:
+      g_value_set_double (value, private->offset_y);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_canvas_boundary_transform (GimpCanvasItem *item,
+                                GimpSegment    *segs,
+                                gint           *n_segs)
+{
+  GimpCanvasBoundaryPrivate *private = GET_PRIVATE (item);
+  gint                       i;
+
+  if (private->transform)
+    {
+      gint n = 0;
+
+      for (i = 0; i < private->n_segs; i++)
+        {
+          GimpVector2 vertices[2];
+          GimpVector2 t_vertices[2];
+          gint        n_t_vertices;
+
+          vertices[0] = (GimpVector2) { private->segs[i].x1, private->segs[i].y1 };
+          vertices[1] = (GimpVector2) { private->segs[i].x2, private->segs[i].y2 };
+
+          gimp_transform_polygon (private->transform, vertices, 2, FALSE,
+                                  t_vertices, &n_t_vertices);
+
+          if (n_t_vertices == 2)
+            {
+              gimp_canvas_item_transform_xy (item,
+                                             t_vertices[0].x + private->offset_x,
+                                             t_vertices[0].y + private->offset_y,
+                                             &segs[n].x1, &segs[n].y1);
+              gimp_canvas_item_transform_xy (item,
+                                             t_vertices[1].x + private->offset_x,
+                                             t_vertices[1].y + private->offset_y,
+                                             &segs[n].x2, &segs[n].y2);
+
+              n++;
+            }
+        }
+
+      *n_segs = n;
+    }
+  else
+    {
+      for (i = 0; i < private->n_segs; i++)
+        {
+          gimp_canvas_item_transform_xy (item,
+                                         private->segs[i].x1 + private->offset_x,
+                                         private->segs[i].y1 + private->offset_y,
+                                         &segs[i].x1,
+                                         &segs[i].y1);
+          gimp_canvas_item_transform_xy (item,
+                                         private->segs[i].x2 + private->offset_x,
+                                         private->segs[i].y2 + private->offset_y,
+                                         &segs[i].x2,
+                                         &segs[i].y2);
+
+          /*  If this segment is a closing segment && the segments lie inside
+           *  the region, OR if this is an opening segment and the segments
+           *  lie outside the region...
+           *  we need to transform it by one display pixel
+           */
+          if (! private->segs[i].open)
+            {
+              /*  If it is vertical  */
+              if (segs[i].x1 == segs[i].x2)
+                {
+                  segs[i].x1 -= 1;
+                  segs[i].x2 -= 1;
+                }
+              else
+                {
+                  segs[i].y1 -= 1;
+                  segs[i].y2 -= 1;
+                }
+            }
+        }
+
+      *n_segs = private->n_segs;
+    }
+}
+
+static void
+gimp_canvas_boundary_draw (GimpCanvasItem *item,
+                           cairo_t        *cr)
+{
+  GimpCanvasBoundaryPrivate *private = GET_PRIVATE (item);
+  GimpSegment               *segs;
+  gint                       n_segs;
+
+  segs = g_new0 (GimpSegment, private->n_segs);
+
+  gimp_canvas_boundary_transform (item, segs, &n_segs);
+
+  gimp_cairo_segments (cr, segs, n_segs);
+
+  _gimp_canvas_item_stroke (item, cr);
+
+  g_free (segs);
+}
+
+static cairo_region_t *
+gimp_canvas_boundary_get_extents (GimpCanvasItem *item)
+{
+  GimpCanvasBoundaryPrivate *private = GET_PRIVATE (item);
+  cairo_rectangle_int_t      rectangle;
+  GimpSegment               *segs;
+  gint                       n_segs;
+  gint                       x1, y1, x2, y2;
+  gint                       i;
+
+  segs = g_new0 (GimpSegment, private->n_segs);
+
+  gimp_canvas_boundary_transform (item, segs, &n_segs);
+
+  if (n_segs == 0)
+    {
+      g_free (segs);
+
+      return cairo_region_create ();
+    }
+
+  x1 = MIN (segs[0].x1, segs[0].x2);
+  y1 = MIN (segs[0].y1, segs[0].y2);
+  x2 = MAX (segs[0].x1, segs[0].x2);
+  y2 = MAX (segs[0].y1, segs[0].y2);
+
+  for (i = 1; i < n_segs; i++)
+    {
+      gint x3 = MIN (segs[i].x1, segs[i].x2);
+      gint y3 = MIN (segs[i].y1, segs[i].y2);
+      gint x4 = MAX (segs[i].x1, segs[i].x2);
+      gint y4 = MAX (segs[i].y1, segs[i].y2);
+
+      x1 = MIN (x1, x3);
+      y1 = MIN (y1, y3);
+      x2 = MAX (x2, x4);
+      y2 = MAX (y2, y4);
+    }
+
+  g_free (segs);
+
+  rectangle.x      = x1 - 2;
+  rectangle.y      = y1 - 2;
+  rectangle.width  = x2 - x1 + 4;
+  rectangle.height = y2 - y1 + 4;
+
+  return cairo_region_create_rectangle (&rectangle);
+}
+
+GimpCanvasItem *
+gimp_canvas_boundary_new (GimpDisplayShell   *shell,
+                          const GimpBoundSeg *segs,
+                          gint                n_segs,
+                          GimpMatrix3        *transform,
+                          gdouble             offset_x,
+                          gdouble             offset_y)
+{
+  GimpCanvasItem            *item;
+  GimpCanvasBoundaryPrivate *private;
+
+  g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), NULL);
+
+  item = g_object_new (GIMP_TYPE_CANVAS_BOUNDARY,
+                       "shell",     shell,
+                       "transform", transform,
+                       "offset-x",  offset_x,
+                       "offset-y",  offset_y,
+                       NULL);
+  private = GET_PRIVATE (item);
+
+  /* puke */
+  private->segs   = g_memdup (segs, n_segs * sizeof (GimpBoundSeg));
+  private->n_segs = n_segs;
+
+  return item;
+}