Adding upstream version 2.10.22.upstream/2.10.22upstream

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

1 files changed, 263 insertions, 0 deletions

diff --git a/app/display/gimpcanvasbufferpreview.c b/app/display/gimpcanvasbufferpreview.c
new file mode 100644
index 0000000..858bab6
--- /dev/null
+++ b/app/display/gimpcanvasbufferpreview.c
@@ -0,0 +1,263 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpcanvasbufferpreview.c
+ * Copyright (C) 2013 Marek Dvoroznak <dvoromar@gmail.com>
+ *
+ * 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 <cairo/cairo.h>
+
+#include "libgimpbase/gimpbase.h"
+#include "libgimpmath/gimpmath.h"
+
+#include "display/display-types.h"
+
+#include "core/gimpimage.h"
+
+#include "gimpcanvas.h"
+#include "gimpcanvasbufferpreview.h"
+#include "gimpdisplayshell.h"
+#include "gimpdisplayshell-scroll.h"
+
+
+enum
+{
+  PROP_0,
+  PROP_BUFFER
+};
+
+
+typedef struct _GimpCanvasBufferPreviewPrivate GimpCanvasBufferPreviewPrivate;
+
+struct _GimpCanvasBufferPreviewPrivate
+{
+  GeglBuffer *buffer;
+};
+
+
+#define GET_PRIVATE(transform_preview) \
+        ((GimpCanvasBufferPreviewPrivate *) gimp_canvas_buffer_preview_get_instance_private ((GimpCanvasBufferPreview *) (transform_preview)))
+
+
+/*  local function prototypes  */
+
+static void             gimp_canvas_buffer_preview_dispose        (GObject               *object);
+static void             gimp_canvas_buffer_preview_set_property   (GObject               *object,
+                                                                   guint                  property_id,
+                                                                   const GValue          *value,
+                                                                   GParamSpec            *pspec);
+static void             gimp_canvas_buffer_preview_get_property   (GObject               *object,
+                                                                   guint                  property_id,
+                                                                   GValue                *value,
+                                                                   GParamSpec            *pspec);
+
+static void             gimp_canvas_buffer_preview_draw           (GimpCanvasItem        *item,
+                                                                   cairo_t               *cr);
+static cairo_region_t * gimp_canvas_buffer_preview_get_extents    (GimpCanvasItem        *item);
+static void             gimp_canvas_buffer_preview_compute_bounds (GimpCanvasItem        *item,
+                                                                   cairo_rectangle_int_t *bounds);
+
+
+G_DEFINE_TYPE_WITH_PRIVATE (GimpCanvasBufferPreview, gimp_canvas_buffer_preview,
+                            GIMP_TYPE_CANVAS_ITEM)
+
+#define parent_class gimp_canvas_buffer_preview_parent_class
+
+
+static void
+gimp_canvas_buffer_preview_class_init (GimpCanvasBufferPreviewClass *klass)
+{
+  GObjectClass        *object_class = G_OBJECT_CLASS (klass);
+  GimpCanvasItemClass *item_class   = GIMP_CANVAS_ITEM_CLASS (klass);
+
+  object_class->dispose      = gimp_canvas_buffer_preview_dispose;
+  object_class->set_property = gimp_canvas_buffer_preview_set_property;
+  object_class->get_property = gimp_canvas_buffer_preview_get_property;
+
+  item_class->draw           = gimp_canvas_buffer_preview_draw;
+  item_class->get_extents    = gimp_canvas_buffer_preview_get_extents;
+
+  g_object_class_install_property (object_class, PROP_BUFFER,
+                                   g_param_spec_object ("buffer",
+                                                        NULL, NULL,
+                                                        GEGL_TYPE_BUFFER,
+                                                        GIMP_PARAM_READWRITE));
+}
+
+static void
+gimp_canvas_buffer_preview_init (GimpCanvasBufferPreview *transform_preview)
+{
+}
+
+static void
+gimp_canvas_buffer_preview_dispose (GObject *object)
+{
+  GimpCanvasBufferPreviewPrivate *private = GET_PRIVATE (object);
+
+  g_clear_object (&private->buffer);
+
+  G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gimp_canvas_buffer_preview_set_property (GObject      *object,
+                                         guint         property_id,
+                                         const GValue *value,
+                                         GParamSpec   *pspec)
+{
+  GimpCanvasBufferPreviewPrivate *private = GET_PRIVATE (object);
+
+  switch (property_id)
+    {
+    case PROP_BUFFER:
+      g_set_object (&private->buffer, g_value_get_object (value));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_canvas_buffer_preview_get_property (GObject    *object,
+                                         guint       property_id,
+                                         GValue     *value,
+                                         GParamSpec *pspec)
+{
+  GimpCanvasBufferPreviewPrivate *private = GET_PRIVATE (object);
+
+  switch (property_id)
+    {
+    case PROP_BUFFER:
+      g_value_set_object (value, private->buffer);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_canvas_buffer_preview_draw (GimpCanvasItem *item,
+                                 cairo_t        *cr)
+{
+  GimpDisplayShell      *shell  = gimp_canvas_item_get_shell (item);
+  GeglBuffer            *buffer = GET_PRIVATE (item)->buffer;
+  cairo_surface_t       *area;
+  guchar                *data;
+  cairo_rectangle_int_t  rectangle;
+
+  g_return_if_fail (GEGL_IS_BUFFER (buffer));
+
+  gimp_canvas_buffer_preview_compute_bounds (item, &rectangle);
+
+  area = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
+                                     rectangle.width,
+                                     rectangle.height);
+
+  data = cairo_image_surface_get_data (area);
+  gegl_buffer_get (buffer,
+                   GEGL_RECTANGLE (rectangle.x + shell->offset_x,
+                                   rectangle.y + shell->offset_y,
+                                   rectangle.width,
+                                   rectangle.height),
+                   shell->scale_x,
+                   babl_format ("cairo-ARGB32"),
+                   data,
+                   cairo_image_surface_get_stride (area),
+                   GEGL_ABYSS_NONE);
+
+  cairo_surface_flush (area);
+  cairo_surface_mark_dirty (area);
+
+  cairo_set_source_surface (cr, area, rectangle.x, rectangle.y);
+  cairo_rectangle (cr,
+                   rectangle.x, rectangle.y,
+                   rectangle.width, rectangle.height);
+  cairo_fill (cr);
+
+  cairo_surface_destroy (area);
+}
+
+static void
+gimp_canvas_buffer_preview_compute_bounds (GimpCanvasItem        *item,
+                                           cairo_rectangle_int_t *bounds)
+{
+  GimpDisplayShell *shell  = gimp_canvas_item_get_shell (item);
+  GeglBuffer       *buffer = GET_PRIVATE (item)->buffer;
+  GeglRectangle     extent;
+  gdouble           x1, y1;
+  gdouble           x2, y2;
+
+  g_return_if_fail (GEGL_IS_BUFFER (buffer));
+
+  extent = *gegl_buffer_get_extent (buffer);
+
+  gimp_canvas_item_transform_xy_f (item,
+                                   extent.x,
+                                   extent.y,
+                                   &x1, &y1);
+  gimp_canvas_item_transform_xy_f (item,
+                                   extent.x + extent.width,
+                                   extent.y + extent.height,
+                                   &x2, &y2);
+
+  extent.x      = floor (x1);
+  extent.y      = floor (y1);
+  extent.width  = ceil  (x2) - extent.x;
+  extent.height = ceil  (y2) - extent.y;
+
+  gegl_rectangle_intersect (&extent,
+                            &extent,
+                            GEGL_RECTANGLE (0,
+                                            0,
+                                            shell->disp_width,
+                                            shell->disp_height));
+
+  bounds->x      = extent.x;
+  bounds->y      = extent.y;
+  bounds->width  = extent.width;
+  bounds->height = extent.height;
+}
+
+static cairo_region_t *
+gimp_canvas_buffer_preview_get_extents (GimpCanvasItem *item)
+{
+  cairo_rectangle_int_t rectangle;
+
+  gimp_canvas_buffer_preview_compute_bounds (item, &rectangle);
+
+  return cairo_region_create_rectangle (&rectangle);
+}
+
+GimpCanvasItem *
+gimp_canvas_buffer_preview_new (GimpDisplayShell  *shell,
+                                GeglBuffer        *buffer)
+{
+  g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), NULL);
+  g_return_val_if_fail (GEGL_IS_BUFFER (buffer), NULL);
+
+  return g_object_new (GIMP_TYPE_CANVAS_BUFFER_PREVIEW,
+                       "shell",       shell,
+                       "buffer",      buffer,
+                       NULL);
+}