884b3aa7a3
2003-03-17 Michael Natterer <mitch@gimp.org> Made drawable/layer properties (visibility, opacity etc.) undoable (fixes bug #73893). * app/core/core-enums.[ch]: added undo types/groups for visibility, mode, opacity, linked and preserve_trans. * app/core/Makefile.am * app/core/core-types.h * app/core/gimpitemundo.[ch]: new GimpUndo subclass which holds a ref'ed GimpItem pointer so (1) this doesn't need to be done by all undo steps related to an item and (2) the item the undo step is for can be determined from outside the undo system. * app/core/gimpimage-undo.[ch]: added gimp_image_undo_push_item() which returns a new GimpItemUndo. * app/core/gimpimage-undo-push.[ch]: use it for all item related undo steps. Removed lots of GimpItem, GimpLayer, GimpDrawable and GimpVectors pointers from the private undo structs. Added undo push functions for the new undo types added above. * app/core/gimpdrawable.[ch] (gimp_drawable_set_visible): added "gboolean push_undo" parameter. * app/core/gimplayer.[ch] (gimp_layer_set_opacity, _mode, _preserve_trans, _linked): added "gboolean push_undo" parameters. * app/core/gimpimage-mask.c * app/core/gimpimage-merge.c * app/core/gimplayer-floating-sel.c * app/tools/gimpmovetool.c * app/xcf/xcf-load.c * app/widgets/gimpdrawablelistitem.c * app/widgets/gimplayerlistitem.c * app/widgets/gimplayerlistview.c: changed accordingly. * tools/pdbgen/pdb/channel.pdb * tools/pdbgen/pdb/layer.pdb: ditto. Added '$undo' paramaters to the foo_accessors() functions. Removed $func from foo_accesors() because we don't manipulate items without using getters/setters any longer. * app/pdb/channel_cmds.c * app/pdb/layer_cmds.c: regenerated. * app/widgets/gimpcellrenderertoggle.[ch]: added "clicked" signal which carries an additional "GdkModifierType state" parameter as in GimpCellRendererViewable . * app/widgets/gimpcontainertreeview.c: emit "clicked" from the toggle renderer, not "toggled" so the callbacks get the modifier state. * app/widgets/gimpdrawabletreeview.c: resurrected the "exclusive visible by <shift>+click" feature as in 1.2. * app/widgets/gimplayertreeview.c: compress layer opacity undos by looking at the top of the undo stack and not pushing an undo if there already is a GIMP_UNDO_DRAWABLE_OPACITY for the active layer.
755 lines
19 KiB
C
755 lines
19 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <glib-object.h>
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#include "libgimpcolor/gimpcolor.h"
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#include "libgimpmath/gimpmath.h"
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#include "libgimpbase/gimpbase.h"
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#include "core-types.h"
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#include "base/pixel-region.h"
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#include "base/tile.h"
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#include "base/tile-manager.h"
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#include "paint-funcs/paint-funcs.h"
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#include "gimp.h"
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#include "gimpchannel.h"
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#include "gimpcontext.h"
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#include "gimpdrawable.h"
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#include "gimpdrawable-preview.h"
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#include "gimpimage.h"
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#include "gimpimage-mask.h"
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#include "gimpimage-undo-push.h"
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#include "gimplayer.h"
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#include "gimplist.h"
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#include "gimpmarshal.h"
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#include "gimpparasitelist.h"
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#include "gimppreviewcache.h"
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#include "libgimp/gimpintl.h"
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enum
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{
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VISIBILITY_CHANGED,
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LAST_SIGNAL
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};
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/* local function prototypes */
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static void gimp_drawable_class_init (GimpDrawableClass *klass);
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static void gimp_drawable_init (GimpDrawable *drawable);
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static void gimp_drawable_finalize (GObject *object);
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static gsize gimp_drawable_get_memsize (GimpObject *object);
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static void gimp_drawable_invalidate_preview (GimpViewable *viewable);
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static GimpItem * gimp_drawable_duplicate (GimpItem *item,
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GType new_type,
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gboolean add_alpha);
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/* private variables */
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static guint gimp_drawable_signals[LAST_SIGNAL] = { 0 };
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static GimpItemClass *parent_class = NULL;
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GType
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gimp_drawable_get_type (void)
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{
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static GType drawable_type = 0;
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if (! drawable_type)
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{
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static const GTypeInfo drawable_info =
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{
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sizeof (GimpDrawableClass),
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(GBaseInitFunc) NULL,
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(GBaseFinalizeFunc) NULL,
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(GClassInitFunc) gimp_drawable_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GimpDrawable),
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0, /* n_preallocs */
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(GInstanceInitFunc) gimp_drawable_init,
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};
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drawable_type = g_type_register_static (GIMP_TYPE_ITEM,
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"GimpDrawable",
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&drawable_info, 0);
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}
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return drawable_type;
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}
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static void
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gimp_drawable_class_init (GimpDrawableClass *klass)
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{
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GObjectClass *object_class;
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GimpObjectClass *gimp_object_class;
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GimpViewableClass *viewable_class;
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GimpItemClass *item_class;
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object_class = G_OBJECT_CLASS (klass);
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gimp_object_class = GIMP_OBJECT_CLASS (klass);
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viewable_class = GIMP_VIEWABLE_CLASS (klass);
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item_class = GIMP_ITEM_CLASS (klass);
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parent_class = g_type_class_peek_parent (klass);
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gimp_drawable_signals[VISIBILITY_CHANGED] =
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g_signal_new ("visibility_changed",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (GimpDrawableClass, visibility_changed),
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NULL, NULL,
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gimp_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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object_class->finalize = gimp_drawable_finalize;
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gimp_object_class->get_memsize = gimp_drawable_get_memsize;
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viewable_class->invalidate_preview = gimp_drawable_invalidate_preview;
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viewable_class->get_preview_size = gimp_drawable_get_preview_size;
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viewable_class->get_popup_size = gimp_drawable_get_popup_size;
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viewable_class->get_preview = gimp_drawable_get_preview;
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item_class->duplicate = gimp_drawable_duplicate;
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klass->visibility_changed = NULL;
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}
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static void
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gimp_drawable_init (GimpDrawable *drawable)
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{
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drawable->tiles = NULL;
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drawable->visible = FALSE;
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drawable->width = 0;
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drawable->height = 0;
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drawable->offset_x = 0;
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drawable->offset_y = 0;
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drawable->bytes = 0;
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drawable->type = -1;
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drawable->has_alpha = FALSE;
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drawable->preview_cache = NULL;
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drawable->preview_valid = FALSE;
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}
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static void
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gimp_drawable_finalize (GObject *object)
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{
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GimpDrawable *drawable;
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g_return_if_fail (GIMP_IS_DRAWABLE (object));
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drawable = GIMP_DRAWABLE (object);
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if (drawable->tiles)
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{
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tile_manager_destroy (drawable->tiles);
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drawable->tiles = NULL;
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}
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if (drawable->preview_cache)
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gimp_preview_cache_invalidate (&drawable->preview_cache);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static gsize
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gimp_drawable_get_memsize (GimpObject *object)
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{
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GimpDrawable *drawable;
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gsize memsize = 0;
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drawable = GIMP_DRAWABLE (object);
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if (drawable->tiles)
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memsize += tile_manager_get_memsize (drawable->tiles);
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if (drawable->preview_cache)
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memsize += gimp_preview_cache_get_memsize (drawable->preview_cache);
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return memsize + GIMP_OBJECT_CLASS (parent_class)->get_memsize (object);
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}
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static void
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gimp_drawable_invalidate_preview (GimpViewable *viewable)
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{
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GimpDrawable *drawable;
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GimpImage *gimage;
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if (GIMP_VIEWABLE_CLASS (parent_class)->invalidate_preview)
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GIMP_VIEWABLE_CLASS (parent_class)->invalidate_preview (viewable);
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drawable = GIMP_DRAWABLE (viewable);
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drawable->preview_valid = FALSE;
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if (drawable->preview_cache)
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gimp_preview_cache_invalidate (&drawable->preview_cache);
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gimage = gimp_item_get_image (GIMP_ITEM (drawable));
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if (gimage)
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gimp_viewable_invalidate_preview (GIMP_VIEWABLE (gimage));
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}
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static GimpItem *
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gimp_drawable_duplicate (GimpItem *item,
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GType new_type,
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gboolean add_alpha)
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{
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GimpDrawable *drawable;
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GimpItem *new_item;
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GimpDrawable *new_drawable;
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GimpImageType new_image_type;
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PixelRegion srcPR;
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PixelRegion destPR;
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g_return_val_if_fail (g_type_is_a (new_type, GIMP_TYPE_DRAWABLE), NULL);
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new_item = GIMP_ITEM_CLASS (parent_class)->duplicate (item, new_type,
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add_alpha);
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if (! GIMP_IS_DRAWABLE (new_item))
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return new_item;
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drawable = GIMP_DRAWABLE (item);
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new_drawable = GIMP_DRAWABLE (new_item);
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if (add_alpha)
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new_image_type = gimp_drawable_type_with_alpha (drawable);
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else
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new_image_type = gimp_drawable_type (drawable);
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gimp_drawable_configure (new_drawable,
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gimp_item_get_image (GIMP_ITEM (drawable)),
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drawable->offset_x,
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drawable->offset_y,
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gimp_drawable_width (drawable),
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gimp_drawable_height (drawable),
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new_image_type,
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GIMP_OBJECT (new_drawable)->name);
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new_drawable->visible = drawable->visible;
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pixel_region_init (&srcPR, drawable->tiles,
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0, 0,
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gimp_drawable_width (drawable),
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gimp_drawable_height (drawable),
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FALSE);
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pixel_region_init (&destPR, new_drawable->tiles,
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0, 0,
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gimp_drawable_width (new_drawable),
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gimp_drawable_height (new_drawable),
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TRUE);
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if (new_image_type == drawable->type)
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copy_region (&srcPR, &destPR);
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else
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add_alpha_region (&srcPR, &destPR);
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return new_item;
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}
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void
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gimp_drawable_configure (GimpDrawable *drawable,
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GimpImage *gimage,
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gint offset_x,
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gint offset_y,
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gint width,
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gint height,
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GimpImageType type,
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const gchar *name)
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{
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g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
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g_return_if_fail (GIMP_IS_IMAGE (gimage));
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/* if not already configured by gimp_item_copy() */
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if (! GIMP_ITEM (drawable)->ID)
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gimp_item_configure (GIMP_ITEM (drawable), gimage, name);
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drawable->width = width;
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drawable->height = height;
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drawable->type = type;
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drawable->bytes = GIMP_IMAGE_TYPE_BYTES (type);
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drawable->has_alpha = GIMP_IMAGE_TYPE_HAS_ALPHA (type);
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drawable->offset_x = offset_x;
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drawable->offset_y = offset_y;
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if (drawable->tiles)
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tile_manager_destroy (drawable->tiles);
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drawable->tiles = tile_manager_new (width, height,
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drawable->bytes);
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drawable->visible = TRUE;
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/* preview variables */
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drawable->preview_cache = NULL;
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drawable->preview_valid = FALSE;
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}
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void
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gimp_drawable_update (GimpDrawable *drawable,
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gint x,
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gint y,
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gint w,
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gint h)
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{
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GimpImage *gimage;
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gint offset_x;
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gint offset_y;
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g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
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gimage = gimp_item_get_image (GIMP_ITEM (drawable));
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g_return_if_fail (gimage != NULL);
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gimp_drawable_offsets (drawable, &offset_x, &offset_y);
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x += offset_x;
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y += offset_y;
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gimp_image_update (gimage, x, y, w, h);
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gimp_viewable_invalidate_preview (GIMP_VIEWABLE (drawable));
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}
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void
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gimp_drawable_push_undo (GimpDrawable *drawable,
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const gchar *undo_desc,
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gint x1,
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gint y1,
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gint x2,
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gint y2,
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TileManager *tiles,
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gboolean sparse)
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{
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g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
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if (! tiles)
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gimp_image_undo_push_image (gimp_item_get_image (GIMP_ITEM (drawable)),
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undo_desc,
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drawable,
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x1, y1, x2, y2);
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else
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gimp_image_undo_push_image_mod (gimp_item_get_image (GIMP_ITEM (drawable)),
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undo_desc,
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drawable,
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x1, y1, x2, y2,
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tiles, sparse);
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}
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void
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gimp_drawable_merge_shadow (GimpDrawable *drawable,
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gboolean push_undo,
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const gchar *undo_desc)
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{
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GimpImage *gimage;
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PixelRegion shadowPR;
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gint x1, y1, x2, y2;
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g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
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gimage = gimp_item_get_image (GIMP_ITEM (drawable));
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g_return_if_fail (GIMP_IS_IMAGE (gimage));
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g_return_if_fail (gimage->shadow != NULL);
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/* A useful optimization here is to limit the update to the
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* extents of the selection mask, as it cannot extend beyond
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* them.
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*/
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gimp_drawable_mask_bounds (drawable, &x1, &y1, &x2, &y2);
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pixel_region_init (&shadowPR, gimage->shadow, x1, y1,
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(x2 - x1), (y2 - y1), FALSE);
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gimp_image_apply_image (gimage, drawable, &shadowPR,
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push_undo, undo_desc,
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GIMP_OPACITY_OPAQUE, GIMP_REPLACE_MODE,
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NULL, x1, y1);
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}
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void
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gimp_drawable_fill (GimpDrawable *drawable,
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const GimpRGB *color)
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{
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GimpImage *gimage;
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PixelRegion destPR;
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guchar c[MAX_CHANNELS];
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guchar i;
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g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
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gimage = gimp_item_get_image (GIMP_ITEM (drawable));
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g_return_if_fail (gimage != NULL);
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switch (GIMP_IMAGE_TYPE_BASE_TYPE (gimp_drawable_type (drawable)))
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{
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case GIMP_RGB:
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gimp_rgba_get_uchar (color,
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&c[RED_PIX],
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&c[GREEN_PIX],
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&c[BLUE_PIX],
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&c[ALPHA_PIX]);
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if (gimp_drawable_type (drawable) != GIMP_RGBA_IMAGE)
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c[ALPHA_PIX] = 255;
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break;
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case GIMP_GRAY:
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gimp_rgba_get_uchar (color,
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&c[GRAY_PIX],
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NULL,
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NULL,
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&c[ALPHA_G_PIX]);
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if (gimp_drawable_type (drawable) != GIMP_GRAYA_IMAGE)
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c[ALPHA_G_PIX] = 255;
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break;
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case GIMP_INDEXED:
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gimp_rgb_get_uchar (color,
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&c[RED_PIX],
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&c[GREEN_PIX],
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&c[BLUE_PIX]);
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gimp_image_transform_color (gimage, drawable, c, &i, GIMP_RGB);
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c[INDEXED_PIX] = i;
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if (gimp_drawable_type (drawable) == GIMP_INDEXEDA_IMAGE)
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gimp_rgba_get_uchar (color,
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NULL,
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NULL,
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NULL,
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&c[ALPHA_I_PIX]);
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break;
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default:
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g_warning ("%s: Cannot fill unknown image type.",
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G_GNUC_PRETTY_FUNCTION);
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break;
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}
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pixel_region_init (&destPR,
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gimp_drawable_data (drawable),
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0, 0,
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gimp_drawable_width (drawable),
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gimp_drawable_height (drawable),
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TRUE);
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color_region (&destPR, c);
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gimp_drawable_update (drawable,
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0, 0,
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gimp_drawable_width (drawable),
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gimp_drawable_height (drawable));
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}
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void
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gimp_drawable_fill_by_type (GimpDrawable *drawable,
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GimpContext *context,
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GimpFillType fill_type)
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{
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GimpRGB color;
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g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
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color.a = GIMP_OPACITY_OPAQUE;
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switch (fill_type)
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{
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case GIMP_FOREGROUND_FILL:
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gimp_context_get_foreground (context, &color);
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break;
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case GIMP_BACKGROUND_FILL:
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gimp_context_get_background (context, &color);
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break;
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|
|
case GIMP_WHITE_FILL:
|
|
gimp_rgb_set (&color, 1.0, 1.0, 1.0);
|
|
break;
|
|
|
|
case GIMP_TRANSPARENT_FILL:
|
|
gimp_rgba_set (&color, 0.0, 0.0, 0.0, GIMP_OPACITY_TRANSPARENT);
|
|
break;
|
|
|
|
case GIMP_NO_FILL:
|
|
return;
|
|
|
|
default:
|
|
g_warning ("%s: unknown fill type %d", G_GNUC_PRETTY_FUNCTION, fill_type);
|
|
return;
|
|
}
|
|
|
|
gimp_drawable_fill (drawable, &color);
|
|
}
|
|
|
|
gboolean
|
|
gimp_drawable_mask_bounds (GimpDrawable *drawable,
|
|
gint *x1,
|
|
gint *y1,
|
|
gint *x2,
|
|
gint *y2)
|
|
{
|
|
GimpImage *gimage;
|
|
gint off_x, off_y;
|
|
|
|
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
|
|
|
|
gimage = gimp_item_get_image (GIMP_ITEM (drawable));
|
|
|
|
g_return_val_if_fail (gimage != NULL, FALSE);
|
|
|
|
if (gimp_image_mask_bounds (gimage, x1, y1, x2, y2))
|
|
{
|
|
gimp_drawable_offsets (drawable, &off_x, &off_y);
|
|
*x1 = CLAMP (*x1 - off_x, 0, gimp_drawable_width (drawable));
|
|
*y1 = CLAMP (*y1 - off_y, 0, gimp_drawable_height (drawable));
|
|
*x2 = CLAMP (*x2 - off_x, 0, gimp_drawable_width (drawable));
|
|
*y2 = CLAMP (*y2 - off_y, 0, gimp_drawable_height (drawable));
|
|
return TRUE;
|
|
}
|
|
else
|
|
{
|
|
*x2 = gimp_drawable_width (drawable);
|
|
*y2 = gimp_drawable_height (drawable);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
gimp_drawable_has_alpha (const GimpDrawable *drawable)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
|
|
|
|
return drawable->has_alpha;
|
|
}
|
|
|
|
GimpImageType
|
|
gimp_drawable_type (const GimpDrawable *drawable)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), -1);
|
|
|
|
return drawable->type;
|
|
}
|
|
|
|
GimpImageType
|
|
gimp_drawable_type_with_alpha (const GimpDrawable *drawable)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), -1);
|
|
|
|
return GIMP_IMAGE_TYPE_WITH_ALPHA (gimp_drawable_type (drawable));
|
|
}
|
|
|
|
gboolean
|
|
gimp_drawable_is_rgb (const GimpDrawable *drawable)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
|
|
|
|
return GIMP_IMAGE_TYPE_IS_RGB (gimp_drawable_type (drawable));
|
|
}
|
|
|
|
gboolean
|
|
gimp_drawable_is_gray (const GimpDrawable *drawable)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
|
|
|
|
return GIMP_IMAGE_TYPE_IS_GRAY (gimp_drawable_type (drawable));
|
|
}
|
|
|
|
gboolean
|
|
gimp_drawable_is_indexed (const GimpDrawable *drawable)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
|
|
|
|
return GIMP_IMAGE_TYPE_IS_INDEXED (gimp_drawable_type (drawable));
|
|
}
|
|
|
|
TileManager *
|
|
gimp_drawable_data (const GimpDrawable *drawable)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
|
|
|
|
return drawable->tiles;
|
|
}
|
|
|
|
TileManager *
|
|
gimp_drawable_shadow (GimpDrawable *drawable)
|
|
{
|
|
GimpImage *gimage;
|
|
|
|
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
|
|
|
|
if (! (gimage = gimp_item_get_image (GIMP_ITEM (drawable))))
|
|
return NULL;
|
|
|
|
return gimp_image_shadow (gimage, drawable->width, drawable->height,
|
|
drawable->bytes);
|
|
}
|
|
|
|
gint
|
|
gimp_drawable_bytes (const GimpDrawable *drawable)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), -1);
|
|
|
|
return drawable->bytes;
|
|
}
|
|
|
|
gint
|
|
gimp_drawable_bytes_with_alpha (const GimpDrawable *drawable)
|
|
{
|
|
GimpImageType type;
|
|
|
|
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), -1);
|
|
|
|
type = GIMP_IMAGE_TYPE_WITH_ALPHA (gimp_drawable_type (drawable));
|
|
|
|
return GIMP_IMAGE_TYPE_BYTES (type);
|
|
}
|
|
|
|
gint
|
|
gimp_drawable_width (const GimpDrawable *drawable)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), -1);
|
|
|
|
return drawable->width;
|
|
}
|
|
|
|
gint
|
|
gimp_drawable_height (const GimpDrawable *drawable)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), -1);
|
|
|
|
return drawable->height;
|
|
}
|
|
|
|
gboolean
|
|
gimp_drawable_get_visible (const GimpDrawable *drawable)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
|
|
|
|
return drawable->visible;
|
|
}
|
|
|
|
void
|
|
gimp_drawable_set_visible (GimpDrawable *drawable,
|
|
gboolean visible,
|
|
gboolean push_undo)
|
|
{
|
|
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
|
|
|
|
if (drawable->visible != visible)
|
|
{
|
|
if (push_undo)
|
|
{
|
|
GimpImage *gimage = gimp_item_get_image (GIMP_ITEM (drawable));
|
|
|
|
if (gimage)
|
|
gimp_image_undo_push_drawable_visibility (gimage, NULL, drawable);
|
|
}
|
|
|
|
drawable->visible = visible ? TRUE : FALSE;
|
|
|
|
g_signal_emit (drawable, gimp_drawable_signals[VISIBILITY_CHANGED], 0);
|
|
|
|
gimp_drawable_update (drawable,
|
|
0, 0,
|
|
drawable->width,
|
|
drawable->height);
|
|
}
|
|
}
|
|
|
|
void
|
|
gimp_drawable_offsets (const GimpDrawable *drawable,
|
|
gint *off_x,
|
|
gint *off_y)
|
|
{
|
|
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
|
|
|
|
*off_x = drawable->offset_x;
|
|
*off_y = drawable->offset_y;
|
|
}
|
|
|
|
guchar *
|
|
gimp_drawable_cmap (const GimpDrawable *drawable)
|
|
{
|
|
GimpImage *gimage;
|
|
|
|
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
|
|
|
|
if (! (gimage = gimp_item_get_image (GIMP_ITEM (drawable))))
|
|
return NULL;
|
|
|
|
return gimage->cmap;
|
|
}
|
|
|
|
guchar *
|
|
gimp_drawable_get_color_at (GimpDrawable *drawable,
|
|
gint x,
|
|
gint y)
|
|
{
|
|
Tile *tile;
|
|
guchar *src;
|
|
guchar *dest;
|
|
|
|
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
|
|
g_return_val_if_fail (gimp_item_get_image (GIMP_ITEM (drawable)) ||
|
|
! gimp_drawable_is_indexed (drawable), NULL);
|
|
|
|
/* do not make this a g_return_if_fail() */
|
|
if ( !(x >= 0 && x < drawable->width && y >= 0 && y < drawable->height))
|
|
return NULL;
|
|
|
|
dest = g_new (guchar, 5);
|
|
|
|
tile = tile_manager_get_tile (gimp_drawable_data (drawable), x, y,
|
|
TRUE, FALSE);
|
|
src = tile_data_pointer (tile, x % TILE_WIDTH, y % TILE_HEIGHT);
|
|
|
|
gimp_image_get_color (gimp_item_get_image (GIMP_ITEM (drawable)),
|
|
gimp_drawable_type (drawable), dest, src);
|
|
|
|
if (GIMP_IMAGE_TYPE_HAS_ALPHA (gimp_drawable_type (drawable)))
|
|
dest[3] = src[gimp_drawable_bytes (drawable) - 1];
|
|
else
|
|
dest[3] = 255;
|
|
|
|
if (gimp_drawable_is_indexed (drawable))
|
|
dest[4] = src[0];
|
|
else
|
|
dest[4] = 0;
|
|
|
|
tile_release (tile, FALSE);
|
|
|
|
return dest;
|
|
}
|