Adding upstream version 2.10.36.upstream/2.10.36

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

1 files changed, 260 insertions, 0 deletions

diff --git a/app/widgets/gimpviewrendererpalette.c b/app/widgets/gimpviewrendererpalette.c
new file mode 100644
index 0000000..6c99c60
--- /dev/null
+++ b/app/widgets/gimpviewrendererpalette.c
@@ -0,0 +1,260 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpviewrendererpalette.c
+ * Copyright (C) 2005 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 <string.h>
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpmath/gimpmath.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "widgets-types.h"
+
+#include "core/gimppalette.h"
+
+#include "gimpviewrendererpalette.h"
+
+
+#define COLUMNS 16
+
+
+static void   gimp_view_renderer_palette_finalize (GObject          *object);
+
+static void   gimp_view_renderer_palette_render   (GimpViewRenderer *renderer,
+                                                   GtkWidget        *widget);
+
+
+G_DEFINE_TYPE (GimpViewRendererPalette, gimp_view_renderer_palette,
+               GIMP_TYPE_VIEW_RENDERER)
+
+#define parent_class gimp_view_renderer_palette_parent_class
+
+
+static void
+gimp_view_renderer_palette_class_init (GimpViewRendererPaletteClass *klass)
+{
+  GObjectClass          *object_class   = G_OBJECT_CLASS (klass);
+  GimpViewRendererClass *renderer_class = GIMP_VIEW_RENDERER_CLASS (klass);
+
+  object_class->finalize = gimp_view_renderer_palette_finalize;
+
+  renderer_class->render = gimp_view_renderer_palette_render;
+}
+
+static void
+gimp_view_renderer_palette_init (GimpViewRendererPalette *renderer)
+{
+  renderer->cell_size = 4;
+  renderer->draw_grid = FALSE;
+  renderer->columns   = COLUMNS;
+}
+
+static void
+gimp_view_renderer_palette_finalize (GObject *object)
+{
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gimp_view_renderer_palette_render (GimpViewRenderer *renderer,
+                                   GtkWidget        *widget)
+{
+  GimpViewRendererPalette *renderpal = GIMP_VIEW_RENDERER_PALETTE (renderer);
+  GimpPalette             *palette;
+  GimpColorTransform      *transform;
+  guchar                  *row;
+  guchar                  *dest;
+  GList                   *list;
+  gdouble                  cell_width;
+  gint                     grid_width;
+  gint                     dest_stride;
+  gint                     y;
+
+  palette = GIMP_PALETTE (renderer->viewable);
+
+  if (gimp_palette_get_n_colors (palette) == 0)
+    return;
+
+  grid_width = renderpal->draw_grid ? 1 : 0;
+
+  if (renderpal->cell_size > 0)
+    {
+      gint n_columns = gimp_palette_get_columns (palette);
+
+      if (n_columns > 0)
+        cell_width = MAX ((gdouble) renderpal->cell_size,
+                          (gdouble) (renderer->width - grid_width) /
+                          (gdouble) n_columns);
+      else
+        cell_width = renderpal->cell_size;
+    }
+  else
+    {
+      gint n_columns = gimp_palette_get_columns (palette);
+
+      if (n_columns > 0)
+        cell_width = ((gdouble) (renderer->width - grid_width) /
+                      (gdouble) n_columns);
+      else
+        cell_width = (gdouble) (renderer->width - grid_width) / 16.0;
+    }
+
+  cell_width = MAX (4.0, cell_width);
+
+  renderpal->cell_width = cell_width;
+
+  renderpal->columns = (gdouble) (renderer->width - grid_width) / cell_width;
+
+  renderpal->rows = gimp_palette_get_n_colors (palette) / renderpal->columns;
+  if (gimp_palette_get_n_colors (palette) % renderpal->columns)
+    renderpal->rows += 1;
+
+  renderpal->cell_height = MAX (4, ((renderer->height - grid_width) /
+                                    renderpal->rows));
+
+  if (! renderpal->draw_grid)
+    renderpal->cell_height = MIN (renderpal->cell_height,
+                                  renderpal->cell_width);
+
+  list = gimp_palette_get_colors (palette);
+
+  if (! renderer->surface)
+    renderer->surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
+                                                    renderer->width,
+                                                    renderer->height);
+
+  cairo_surface_flush (renderer->surface);
+
+  row = g_new (guchar, renderer->width * 4);
+
+  dest        = cairo_image_surface_get_data (renderer->surface);
+  dest_stride = cairo_image_surface_get_stride (renderer->surface);
+
+  transform = gimp_view_renderer_get_color_transform (renderer, widget,
+                                                      babl_format ("cairo-RGB24"),
+                                                      babl_format ("cairo-RGB24"));
+
+  for (y = 0; y < renderer->height; y++)
+    {
+      if ((y % renderpal->cell_height) == 0)
+        {
+          guchar  r, g, b;
+          gint    x;
+          gint    n = 0;
+          guchar *d = row;
+
+          memset (row, renderpal->draw_grid ? 0 : 255, renderer->width * 4);
+
+          r = g = b = (renderpal->draw_grid ? 0 : 255);
+
+          for (x = 0; x < renderer->width; x++, d += 4)
+            {
+              if ((x % renderpal->cell_width) == 0)
+                {
+                  if (list && n < renderpal->columns &&
+                      renderer->width - x >= renderpal->cell_width)
+                    {
+                      GimpPaletteEntry *entry = list->data;
+
+                      list = g_list_next (list);
+                      n++;
+
+                      gimp_rgb_get_uchar (&entry->color, &r, &g, &b);
+                    }
+                  else
+                    {
+                      r = g = b = (renderpal->draw_grid ? 0 : 255);
+                    }
+                }
+
+              if (renderpal->draw_grid && (x % renderpal->cell_width) == 0)
+                {
+                  GIMP_CAIRO_RGB24_SET_PIXEL (d, 0, 0, 0);
+                }
+              else
+                {
+                  GIMP_CAIRO_RGB24_SET_PIXEL (d, r, g, b);
+                }
+            }
+        }
+
+      if (renderpal->draw_grid && (y % renderpal->cell_height) == 0)
+        {
+          memset (dest, 0, renderer->width * 4);
+        }
+      else
+        {
+          if (transform)
+            {
+              gimp_color_transform_process_pixels (transform,
+                                                   babl_format ("cairo-RGB24"),
+                                                   row,
+                                                   babl_format ("cairo-RGB24"),
+                                                   dest,
+                                                   renderer->width);
+            }
+          else
+            {
+              memcpy (dest, row, renderer->width * 4);
+            }
+        }
+
+      dest += dest_stride;
+    }
+
+  g_free (row);
+
+  cairo_surface_mark_dirty (renderer->surface);
+}
+
+
+/*  public functions  */
+
+void
+gimp_view_renderer_palette_set_cell_size (GimpViewRendererPalette *renderer,
+                                          gint                     cell_size)
+{
+  g_return_if_fail (GIMP_IS_VIEW_RENDERER_PALETTE (renderer));
+
+  if (cell_size != renderer->cell_size)
+    {
+      renderer->cell_size = cell_size;
+
+      gimp_view_renderer_invalidate (GIMP_VIEW_RENDERER (renderer));
+    }
+}
+
+void
+gimp_view_renderer_palette_set_draw_grid (GimpViewRendererPalette *renderer,
+                                          gboolean                 draw_grid)
+{
+  g_return_if_fail (GIMP_IS_VIEW_RENDERER_PALETTE (renderer));
+
+  if (draw_grid != renderer->draw_grid)
+    {
+      renderer->draw_grid = draw_grid ? TRUE : FALSE;
+
+      gimp_view_renderer_invalidate (GIMP_VIEW_RENDERER (renderer));
+    }
+}