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gimp/app/core/gimpdrawable.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <glib-object.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpcolor/gimpcolor.h"
#include "core-types.h"
#include "base/pixel-region.h"
#include "base/temp-buf.h"
#include "base/tile.h"
#include "base/tile-manager.h"
#include "paint-funcs/paint-funcs.h"
#include "paint-funcs/scale-region.h"
#include "gimpchannel.h"
#include "gimpcontext.h"
#include "gimpdrawable-combine.h"
#include "gimpdrawable-preview.h"
#include "gimpdrawable-transform.h"
#include "gimpimage.h"
#include "gimpimage-colormap.h"
#include "gimpimage-undo-push.h"
#include "gimplayer.h"
#include "gimplayer-floating-sel.h"
#include "gimpmarshal.h"
#include "gimppattern.h"
#include "gimppickable.h"
#include "gimppreviewcache.h"
#include "gimpprogress.h"
#include "gimp-intl.h"
enum
{
UPDATE,
ALPHA_CHANGED,
LAST_SIGNAL
};
/* local function prototypes */
static void gimp_drawable_pickable_iface_init (GimpPickableInterface *iface);
static void gimp_drawable_finalize (GObject *object);
static gint64 gimp_drawable_get_memsize (GimpObject *object,
gint64 *gui_size);
static gboolean gimp_drawable_get_size (GimpViewable *viewable,
gint *width,
gint *height);
static void gimp_drawable_invalidate_preview (GimpViewable *viewable);
static GimpItem * gimp_drawable_duplicate (GimpItem *item,
GType new_type);
static void gimp_drawable_translate (GimpItem *item,
gint offset_x,
gint offset_y,
gboolean push_undo);
static void gimp_drawable_scale (GimpItem *item,
gint new_width,
gint new_height,
gint new_offset_x,
gint new_offset_y,
GimpInterpolationType interp_type,
GimpProgress *progress);
static void gimp_drawable_resize (GimpItem *item,
GimpContext *context,
gint new_width,
gint new_height,
gint offset_x,
gint offset_y);
static void gimp_drawable_flip (GimpItem *item,
GimpContext *context,
GimpOrientationType flip_type,
gdouble axis,
gboolean clip_result);
static void gimp_drawable_rotate (GimpItem *item,
GimpContext *context,
GimpRotationType rotate_type,
gdouble center_x,
gdouble center_y,
gboolean clip_result);
static void gimp_drawable_transform (GimpItem *item,
GimpContext *context,
const GimpMatrix3 *matrix,
GimpTransformDirection direction,
GimpInterpolationType interpolation_type,
gint recursion_level,
GimpTransformResize clip_result,
GimpProgress *progress);
static gboolean gimp_drawable_get_pixel_at (GimpPickable *pickable,
gint x,
gint y,
guchar *pixel);
static void gimp_drawable_real_update (GimpDrawable *drawable,
gint x,
gint y,
gint width,
gint height);
static gint64 gimp_drawable_real_estimate_memsize (const GimpDrawable *drawable,
gint width,
gint height);
static TileManager * gimp_drawable_real_get_tiles (GimpDrawable *drawable);
static void gimp_drawable_real_set_tiles (GimpDrawable *drawable,
gboolean push_undo,
const gchar *undo_desc,
TileManager *tiles,
GimpImageType type,
gint offset_x,
gint offset_y);
static void gimp_drawable_real_push_undo (GimpDrawable *drawable,
const gchar *undo_desc,
TileManager *tiles,
gboolean sparse,
gint x,
gint y,
gint width,
gint height);
static void gimp_drawable_real_swap_pixels (GimpDrawable *drawable,
TileManager *tiles,
gboolean sparse,
gint x,
gint y,
gint width,
gint height);
G_DEFINE_TYPE_WITH_CODE (GimpDrawable, gimp_drawable, GIMP_TYPE_ITEM,
G_IMPLEMENT_INTERFACE (GIMP_TYPE_PICKABLE,
gimp_drawable_pickable_iface_init))
#define parent_class gimp_drawable_parent_class
static guint gimp_drawable_signals[LAST_SIGNAL] = { 0 };
static void
gimp_drawable_class_init (GimpDrawableClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpObjectClass *gimp_object_class = GIMP_OBJECT_CLASS (klass);
GimpViewableClass *viewable_class = GIMP_VIEWABLE_CLASS (klass);
GimpItemClass *item_class = GIMP_ITEM_CLASS (klass);
gimp_drawable_signals[UPDATE] =
g_signal_new ("update",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpDrawableClass, update),
NULL, NULL,
gimp_marshal_VOID__INT_INT_INT_INT,
G_TYPE_NONE, 4,
G_TYPE_INT,
G_TYPE_INT,
G_TYPE_INT,
G_TYPE_INT);
gimp_drawable_signals[ALPHA_CHANGED] =
g_signal_new ("alpha-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpDrawableClass, alpha_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
object_class->finalize = gimp_drawable_finalize;
gimp_object_class->get_memsize = gimp_drawable_get_memsize;
viewable_class->get_size = gimp_drawable_get_size;
viewable_class->invalidate_preview = gimp_drawable_invalidate_preview;
viewable_class->get_preview = gimp_drawable_get_preview;
item_class->duplicate = gimp_drawable_duplicate;
item_class->translate = gimp_drawable_translate;
item_class->scale = gimp_drawable_scale;
item_class->resize = gimp_drawable_resize;
item_class->flip = gimp_drawable_flip;
item_class->rotate = gimp_drawable_rotate;
item_class->transform = gimp_drawable_transform;
klass->update = gimp_drawable_real_update;
klass->alpha_changed = NULL;
klass->estimate_memsize = gimp_drawable_real_estimate_memsize;
klass->invalidate_boundary = NULL;
klass->get_active_components = NULL;
klass->apply_region = gimp_drawable_real_apply_region;
klass->replace_region = gimp_drawable_real_replace_region;
klass->get_tiles = gimp_drawable_real_get_tiles;
klass->set_tiles = gimp_drawable_real_set_tiles;
klass->push_undo = gimp_drawable_real_push_undo;
klass->swap_pixels = gimp_drawable_real_swap_pixels;
}
static void
gimp_drawable_init (GimpDrawable *drawable)
{
drawable->tiles = NULL;
drawable->bytes = 0;
drawable->type = -1;
drawable->has_alpha = FALSE;
drawable->preview_cache = NULL;
drawable->preview_valid = FALSE;
}
/* sorry for the evil casts */
static void
gimp_drawable_pickable_iface_init (GimpPickableInterface *iface)
{
iface->get_image = (GimpImage * (*) (GimpPickable *pickable)) gimp_item_get_image;
iface->get_image_type = (GimpImageType (*) (GimpPickable *pickable)) gimp_drawable_type;
iface->get_bytes = (gint (*) (GimpPickable *pickable)) gimp_drawable_bytes;
iface->get_tiles = (TileManager * (*) (GimpPickable *pickable)) gimp_drawable_get_tiles;
iface->get_pixel_at = gimp_drawable_get_pixel_at;
}
static void
gimp_drawable_finalize (GObject *object)
{
GimpDrawable *drawable = GIMP_DRAWABLE (object);
if (drawable->tiles)
{
tile_manager_unref (drawable->tiles);
drawable->tiles = NULL;
}
if (drawable->preview_cache)
gimp_preview_cache_invalidate (&drawable->preview_cache);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gint64
gimp_drawable_get_memsize (GimpObject *object,
gint64 *gui_size)
{
GimpDrawable *drawable = GIMP_DRAWABLE (object);
gint64 memsize = 0;
memsize += tile_manager_get_memsize (gimp_drawable_get_tiles (drawable),
FALSE);
*gui_size += gimp_preview_cache_get_memsize (drawable->preview_cache);
return memsize + GIMP_OBJECT_CLASS (parent_class)->get_memsize (object,
gui_size);
}
static gboolean
gimp_drawable_get_size (GimpViewable *viewable,
gint *width,
gint *height)
{
GimpItem *item = GIMP_ITEM (viewable);
*width = gimp_item_width (item);
*height = gimp_item_height (item);
return TRUE;
}
static void
gimp_drawable_invalidate_preview (GimpViewable *viewable)
{
GimpDrawable *drawable = GIMP_DRAWABLE (viewable);
if (GIMP_VIEWABLE_CLASS (parent_class)->invalidate_preview)
GIMP_VIEWABLE_CLASS (parent_class)->invalidate_preview (viewable);
drawable->preview_valid = FALSE;
if (drawable->preview_cache)
gimp_preview_cache_invalidate (&drawable->preview_cache);
}
static GimpItem *
gimp_drawable_duplicate (GimpItem *item,
GType new_type)
{
GimpItem *new_item;
g_return_val_if_fail (g_type_is_a (new_type, GIMP_TYPE_DRAWABLE), NULL);
new_item = GIMP_ITEM_CLASS (parent_class)->duplicate (item, new_type);
if (GIMP_IS_DRAWABLE (new_item))
{
GimpDrawable *drawable = GIMP_DRAWABLE (item);
GimpDrawable *new_drawable = GIMP_DRAWABLE (new_item);
PixelRegion srcPR;
PixelRegion destPR;
gimp_drawable_configure (new_drawable,
gimp_item_get_image (item),
item->offset_x,
item->offset_y,
gimp_item_width (item),
gimp_item_height (item),
gimp_drawable_type (drawable),
GIMP_OBJECT (new_drawable)->name);
pixel_region_init (&srcPR, gimp_drawable_get_tiles (drawable),
0, 0,
gimp_item_width (item),
gimp_item_height (item),
FALSE);
pixel_region_init (&destPR, gimp_drawable_get_tiles (new_drawable),
0, 0,
gimp_item_width (new_item),
gimp_item_height (new_item),
TRUE);
copy_region (&srcPR, &destPR);
}
return new_item;
}
static void
gimp_drawable_translate (GimpItem *item,
gint offset_x,
gint offset_y,
gboolean push_undo)
{
GimpDrawable *drawable = GIMP_DRAWABLE (item);
GimpImage *image = gimp_item_get_image (item);
if (gimp_drawable_has_floating_sel (drawable))
floating_sel_relax (gimp_image_floating_sel (image), FALSE);
GIMP_ITEM_CLASS (parent_class)->translate (item, offset_x, offset_y,
push_undo);
if (gimp_drawable_has_floating_sel (drawable))
floating_sel_rigor (gimp_image_floating_sel (image), FALSE);
}
static void
gimp_drawable_scale (GimpItem *item,
gint new_width,
gint new_height,
gint new_offset_x,
gint new_offset_y,
GimpInterpolationType interpolation_type,
GimpProgress *progress)
{
GimpDrawable *drawable = GIMP_DRAWABLE (item);
TileManager *new_tiles;
PixelRegion srcPR, destPR;
new_tiles = tile_manager_new (new_width, new_height, drawable->bytes);
pixel_region_init (&srcPR, gimp_drawable_get_tiles (drawable),
0, 0,
gimp_item_width (item),
gimp_item_height (item),
FALSE);
pixel_region_init (&destPR, new_tiles,
0, 0,
new_width, new_height,
TRUE);
/* Scale the drawable -
* If the drawable is indexed, then we don't use pixel-value
* resampling because that doesn't necessarily make sense for indexed
* images.
*/
scale_region (&srcPR, &destPR,
gimp_drawable_is_indexed (drawable) ?
GIMP_INTERPOLATION_NONE : interpolation_type,
progress ? gimp_progress_update_and_flush : NULL,
progress);
gimp_drawable_set_tiles_full (drawable, gimp_item_is_attached (item), NULL,
new_tiles, gimp_drawable_type (drawable),
new_offset_x, new_offset_y);
tile_manager_unref (new_tiles);
}
static void
gimp_drawable_resize (GimpItem *item,
GimpContext *context,
gint new_width,
gint new_height,
gint offset_x,
gint offset_y)
{
GimpDrawable *drawable = GIMP_DRAWABLE (item);
PixelRegion srcPR, destPR;
TileManager *new_tiles;
gint new_offset_x;
gint new_offset_y;
gint copy_x, copy_y;
gint copy_width, copy_height;
/* if the size doesn't change, this is a nop */
if (new_width == gimp_item_width (item) &&
new_height == gimp_item_height (item) &&
offset_x == 0 &&
offset_y == 0)
return;
new_offset_x = item->offset_x - offset_x;
new_offset_y = item->offset_y - offset_y;
gimp_rectangle_intersect (item->offset_x, item->offset_y,
gimp_item_width (item),
gimp_item_height (item),
new_offset_x, new_offset_y,
new_width, new_height,
&copy_x, &copy_y,
&copy_width, &copy_height);
new_tiles = tile_manager_new (new_width, new_height, drawable->bytes);
/* Determine whether the new tiles need to be initially cleared */
if (copy_width != new_width ||
copy_height != new_height)
{
guchar bg[MAX_CHANNELS] = { 0, };
pixel_region_init (&destPR, new_tiles,
0, 0,
new_width, new_height,
TRUE);
if (! gimp_drawable_has_alpha (drawable) && ! GIMP_IS_CHANNEL (drawable))
gimp_image_get_background (gimp_item_get_image (item), context,
gimp_drawable_type (drawable), bg);
color_region (&destPR, bg);
}
/* Determine whether anything needs to be copied */
if (copy_width && copy_height)
{
pixel_region_init (&srcPR, gimp_drawable_get_tiles (drawable),
copy_x - item->offset_x, copy_y - item->offset_y,
copy_width, copy_height,
FALSE);
pixel_region_init (&destPR, new_tiles,
copy_x - new_offset_x, copy_y - new_offset_y,
copy_width, copy_height,
TRUE);
copy_region (&srcPR, &destPR);
}
gimp_drawable_set_tiles_full (drawable, gimp_item_is_attached (item), NULL,
new_tiles, gimp_drawable_type (drawable),
new_offset_x, new_offset_y);
tile_manager_unref (new_tiles);
}
static void
gimp_drawable_flip (GimpItem *item,
GimpContext *context,
GimpOrientationType flip_type,
gdouble axis,
gboolean clip_result)
{
GimpDrawable *drawable = GIMP_DRAWABLE (item);
TileManager *tiles;
gint off_x, off_y;
gint old_off_x, old_off_y;
gimp_item_offsets (item, &off_x, &off_y);
tile_manager_get_offsets (gimp_drawable_get_tiles (drawable),
&old_off_x, &old_off_y);
tile_manager_set_offsets (gimp_drawable_get_tiles (drawable),
off_x, off_y);
tiles = gimp_drawable_transform_tiles_flip (drawable, context,
gimp_drawable_get_tiles (drawable),
flip_type, axis,
clip_result);
tile_manager_set_offsets (gimp_drawable_get_tiles (drawable),
old_off_x, old_off_y);
if (tiles)
{
gimp_drawable_transform_paste (drawable, tiles, FALSE);
tile_manager_unref (tiles);
}
}
static void
gimp_drawable_rotate (GimpItem *item,
GimpContext *context,
GimpRotationType rotate_type,
gdouble center_x,
gdouble center_y,
gboolean clip_result)
{
GimpDrawable *drawable = GIMP_DRAWABLE (item);
TileManager *tiles;
gint off_x, off_y;
gint old_off_x, old_off_y;
gimp_item_offsets (item, &off_x, &off_y);
tile_manager_get_offsets (gimp_drawable_get_tiles (drawable),
&old_off_x, &old_off_y);
tile_manager_set_offsets (gimp_drawable_get_tiles (drawable),
off_x, off_y);
tiles = gimp_drawable_transform_tiles_rotate (drawable, context,
gimp_drawable_get_tiles (drawable),
rotate_type, center_x, center_y,
clip_result);
tile_manager_set_offsets (gimp_drawable_get_tiles (drawable),
old_off_x, old_off_y);
if (tiles)
{
gimp_drawable_transform_paste (drawable, tiles, FALSE);
tile_manager_unref (tiles);
}
}
static void
gimp_drawable_transform (GimpItem *item,
GimpContext *context,
const GimpMatrix3 *matrix,
GimpTransformDirection direction,
GimpInterpolationType interpolation_type,
gint recursion_level,
GimpTransformResize clip_result,
GimpProgress *progress)
{
GimpDrawable *drawable = GIMP_DRAWABLE (item);
TileManager *tiles;
gint off_x, off_y;
gint old_off_x, old_off_y;
gimp_item_offsets (item, &off_x, &off_y);
tile_manager_get_offsets (gimp_drawable_get_tiles (drawable),
&old_off_x, &old_off_y);
tile_manager_set_offsets (gimp_drawable_get_tiles (drawable),
off_x, off_y);
tiles = gimp_drawable_transform_tiles_affine (drawable, context,
gimp_drawable_get_tiles (drawable),
matrix, direction,
interpolation_type,
recursion_level,
clip_result,
progress);
tile_manager_set_offsets (gimp_drawable_get_tiles (drawable),
old_off_x, old_off_y);
if (tiles)
{
gimp_drawable_transform_paste (drawable, tiles, FALSE);
tile_manager_unref (tiles);
}
}
static gboolean
gimp_drawable_get_pixel_at (GimpPickable *pickable,
gint x,
gint y,
guchar *pixel)
{
GimpDrawable *drawable = GIMP_DRAWABLE (pickable);
/* do not make this a g_return_if_fail() */
if (x < 0 || x >= gimp_item_width (GIMP_ITEM (drawable)) ||
y < 0 || y >= gimp_item_height (GIMP_ITEM (drawable)))
return FALSE;
read_pixel_data_1 (gimp_drawable_get_tiles (drawable), x, y, pixel);
return TRUE;
}
static void
gimp_drawable_real_update (GimpDrawable *drawable,
gint x,
gint y,
gint width,
gint height)
{
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (drawable));
}
static gint64
gimp_drawable_real_estimate_memsize (const GimpDrawable *drawable,
gint width,
gint height)
{
return (gint64) gimp_drawable_bytes (drawable) * width * height;
}
static TileManager *
gimp_drawable_real_get_tiles (GimpDrawable *drawable)
{
return drawable->tiles;
}
static void
gimp_drawable_real_set_tiles (GimpDrawable *drawable,
gboolean push_undo,
const gchar *undo_desc,
TileManager *tiles,
GimpImageType type,
gint offset_x,
gint offset_y)
{
GimpItem *item;
gboolean old_has_alpha;
g_return_if_fail (tile_manager_bpp (tiles) == GIMP_IMAGE_TYPE_BYTES (type));
item = GIMP_ITEM (drawable);
old_has_alpha = gimp_drawable_has_alpha (drawable);
gimp_drawable_invalidate_boundary (drawable);
if (push_undo)
gimp_image_undo_push_drawable_mod (gimp_item_get_image (item), undo_desc,
drawable);
/* ref new before unrefing old, they might be the same */
tile_manager_ref (tiles);
if (drawable->tiles)
tile_manager_unref (drawable->tiles);
drawable->tiles = tiles;
drawable->type = type;
drawable->bytes = tile_manager_bpp (tiles);
drawable->has_alpha = GIMP_IMAGE_TYPE_HAS_ALPHA (type);
item->offset_x = offset_x;
item->offset_y = offset_y;
if (gimp_item_width (item) != tile_manager_width (tiles) ||
gimp_item_height (item) != tile_manager_height (tiles))
{
item->width = tile_manager_width (tiles);
item->height = tile_manager_height (tiles);
gimp_viewable_size_changed (GIMP_VIEWABLE (drawable));
}
if (old_has_alpha != gimp_drawable_has_alpha (drawable))
gimp_drawable_alpha_changed (drawable);
}
static void
gimp_drawable_real_push_undo (GimpDrawable *drawable,
const gchar *undo_desc,
TileManager *tiles,
gboolean sparse,
gint x,
gint y,
gint width,
gint height)
{
gboolean new_tiles = FALSE;
if (! tiles)
{
PixelRegion srcPR, destPR;
tiles = tile_manager_new (width, height, gimp_drawable_bytes (drawable));
pixel_region_init (&srcPR, gimp_drawable_get_tiles (drawable),
x, y, width, height, FALSE);
pixel_region_init (&destPR, tiles,
0, 0, width, height, TRUE);
copy_region (&srcPR, &destPR);
new_tiles = TRUE;
}
gimp_image_undo_push_drawable (gimp_item_get_image (GIMP_ITEM (drawable)),
undo_desc, drawable,
tiles, sparse,
x, y, width, height);
if (new_tiles)
tile_manager_unref (tiles);
}
static void
gimp_drawable_real_swap_pixels (GimpDrawable *drawable,
TileManager *tiles,
gboolean sparse,
gint x,
gint y,
gint width,
gint height)
{
if (sparse)
{
gint i, j;
for (i = y; i < (y + height); i += (TILE_HEIGHT - (i % TILE_HEIGHT)))
{
for (j = x; j < (x + width); j += (TILE_WIDTH - (j % TILE_WIDTH)))
{
Tile *src_tile;
Tile *dest_tile;
src_tile = tile_manager_get_tile (tiles, j, i, FALSE, FALSE);
if (tile_is_valid (src_tile))
{
/* swap tiles, not pixels! */
src_tile = tile_manager_get_tile (tiles,
j, i, TRUE, FALSE /*TRUE*/);
dest_tile = tile_manager_get_tile (gimp_drawable_get_tiles (drawable),
j, i, TRUE, FALSE /* TRUE */);
tile_manager_map_tile (tiles,
j, i, dest_tile);
tile_manager_map_tile (gimp_drawable_get_tiles (drawable),
j, i, src_tile);
tile_release (dest_tile, FALSE);
tile_release (src_tile, FALSE);
}
}
}
}
else
{
PixelRegion PR1, PR2;
pixel_region_init (&PR1, tiles,
0, 0, width, height, TRUE);
pixel_region_init (&PR2, gimp_drawable_get_tiles (drawable),
x, y, width, height, TRUE);
swap_region (&PR1, &PR2);
}
gimp_drawable_update (drawable, x, y, width, height);
}
/* public functions */
gint64
gimp_drawable_estimate_memsize (const GimpDrawable *drawable,
gint width,
gint height)
{
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), 0);
return GIMP_DRAWABLE_GET_CLASS (drawable)->estimate_memsize (drawable,
width, height);
}
void
gimp_drawable_configure (GimpDrawable *drawable,
GimpImage *image,
gint offset_x,
gint offset_y,
gint width,
gint height,
GimpImageType type,
const gchar *name)
{
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (width > 0 && height > 0);
gimp_item_configure (GIMP_ITEM (drawable), image,
offset_x, offset_y, width, height, name);
drawable->type = type;
drawable->bytes = GIMP_IMAGE_TYPE_BYTES (type);
drawable->has_alpha = GIMP_IMAGE_TYPE_HAS_ALPHA (type);
if (drawable->tiles)
tile_manager_unref (drawable->tiles);
drawable->tiles = tile_manager_new (width, height, drawable->bytes);
/* preview variables */
drawable->preview_cache = NULL;
drawable->preview_valid = FALSE;
}
void
gimp_drawable_update (GimpDrawable *drawable,
gint x,
gint y,
gint width,
gint height)
{
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_signal_emit (drawable, gimp_drawable_signals[UPDATE], 0,
x, y, width, height);
}
void
gimp_drawable_alpha_changed (GimpDrawable *drawable)
{
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_signal_emit (drawable, gimp_drawable_signals[ALPHA_CHANGED], 0);
}
void
gimp_drawable_invalidate_boundary (GimpDrawable *drawable)
{
GimpDrawableClass *drawable_class;
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
drawable_class = GIMP_DRAWABLE_GET_CLASS (drawable);
if (drawable_class->invalidate_boundary)
drawable_class->invalidate_boundary (drawable);
}
void
gimp_drawable_get_active_components (const GimpDrawable *drawable,
gboolean *active)
{
GimpDrawableClass *drawable_class;
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (active != NULL);
drawable_class = GIMP_DRAWABLE_GET_CLASS (drawable);
if (drawable_class->get_active_components)
drawable_class->get_active_components (drawable, active);
}
void
gimp_drawable_apply_region (GimpDrawable *drawable,
PixelRegion *src2PR,
gboolean push_undo,
const gchar *undo_desc,
gdouble opacity,
GimpLayerModeEffects mode,
TileManager *src1_tiles,
gint x,
gint y)
{
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)));
g_return_if_fail (src2PR != NULL);
GIMP_DRAWABLE_GET_CLASS (drawable)->apply_region (drawable, src2PR,
push_undo, undo_desc,
opacity, mode,
src1_tiles,
x, y);
}
void
gimp_drawable_replace_region (GimpDrawable *drawable,
PixelRegion *src2PR,
gboolean push_undo,
const gchar *undo_desc,
gdouble opacity,
PixelRegion *maskPR,
gint x,
gint y)
{
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)));
g_return_if_fail (src2PR != NULL);
g_return_if_fail (maskPR != NULL);
GIMP_DRAWABLE_GET_CLASS (drawable)->replace_region (drawable, src2PR,
push_undo, undo_desc,
opacity, maskPR,
x, y);
}
TileManager *
gimp_drawable_get_tiles (GimpDrawable *drawable)
{
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
return GIMP_DRAWABLE_GET_CLASS (drawable)->get_tiles (drawable);
}
void
gimp_drawable_set_tiles (GimpDrawable *drawable,
gboolean push_undo,
const gchar *undo_desc,
TileManager *tiles)
{
gint offset_x, offset_y;
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (tiles != NULL);
if (! gimp_item_is_attached (GIMP_ITEM (drawable)))
push_undo = FALSE;
gimp_item_offsets (GIMP_ITEM (drawable), &offset_x, &offset_y);
gimp_drawable_set_tiles_full (drawable, push_undo, undo_desc, tiles,
gimp_drawable_type (drawable),
offset_x, offset_y);
}
void
gimp_drawable_set_tiles_full (GimpDrawable *drawable,
gboolean push_undo,
const gchar *undo_desc,
TileManager *tiles,
GimpImageType type,
gint offset_x,
gint offset_y)
{
GimpItem *item;
GimpImage *image;
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (tiles != NULL);
g_return_if_fail (tile_manager_bpp (tiles) == GIMP_IMAGE_TYPE_BYTES (type));
item = GIMP_ITEM (drawable);
image = gimp_item_get_image (item);
if (! gimp_item_is_attached (GIMP_ITEM (drawable)))
push_undo = FALSE;
if (gimp_item_width (item) != tile_manager_width (tiles) ||
gimp_item_height (item) != tile_manager_height (tiles) ||
item->offset_x != offset_x ||
item->offset_y != offset_y)
{
gimp_drawable_update (drawable,
0, 0,
gimp_item_width (item),
gimp_item_height (item));
}
if (gimp_drawable_has_floating_sel (drawable))
floating_sel_relax (gimp_image_floating_sel (image), FALSE);
GIMP_DRAWABLE_GET_CLASS (drawable)->set_tiles (drawable,
push_undo, undo_desc,
tiles, type,
offset_x, offset_y);
if (gimp_drawable_has_floating_sel (drawable))
floating_sel_rigor (gimp_image_floating_sel (image), FALSE);
gimp_drawable_update (drawable,
0, 0,
gimp_item_width (item),
gimp_item_height (item));
}
void
gimp_drawable_swap_pixels (GimpDrawable *drawable,
TileManager *tiles,
gboolean sparse,
gint x,
gint y,
gint width,
gint height)
{
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (tiles != NULL);
GIMP_DRAWABLE_GET_CLASS (drawable)->swap_pixels (drawable, tiles, sparse,
x, y, width, height);
}
void
gimp_drawable_push_undo (GimpDrawable *drawable,
const gchar *undo_desc,
gint x1,
gint y1,
gint x2,
gint y2,
TileManager *tiles,
gboolean sparse)
{
GimpItem *item;
gint x, y;
gint width, height;
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (sparse == FALSE || tiles != NULL);
item = GIMP_ITEM (drawable);
g_return_if_fail (gimp_item_is_attached (item));
g_return_if_fail (sparse == FALSE ||
tile_manager_width (tiles) == gimp_item_width (item));
g_return_if_fail (sparse == FALSE ||
tile_manager_height (tiles) == gimp_item_height (item));
#if 0
g_printerr ("gimp_drawable_push_undo (%s, %d, %d, %d, %d)\n",
sparse ? "TRUE" : "FALSE", x1, y1, x2 - x1, y2 - y1);
#endif
if (! gimp_rectangle_intersect (x1, y1,
x2 - x1, y2 - y1,
0, 0,
gimp_item_width (item),
gimp_item_height (item),
&x, &y, &width, &height))
{
g_warning ("%s: tried to push empty region", G_STRFUNC);
return;
}
GIMP_DRAWABLE_GET_CLASS (drawable)->push_undo (drawable, undo_desc,
tiles, sparse,
x, y, width, height);
}
TileManager *
gimp_drawable_get_shadow_tiles (GimpDrawable *drawable)
{
GimpItem *item;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
item = GIMP_ITEM (drawable);
g_return_val_if_fail (gimp_item_is_attached (item), NULL);
return gimp_image_get_shadow_tiles (gimp_item_get_image (item),
gimp_item_width (item),
gimp_item_height (item),
drawable->bytes);
}
void
gimp_drawable_merge_shadow (GimpDrawable *drawable,
gboolean push_undo,
const gchar *undo_desc)
{
GimpImage *image;
gint x, y, width, height;
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)));
image = gimp_item_get_image (GIMP_ITEM (drawable));
g_return_if_fail (image->shadow != NULL);
/* A useful optimization here is to limit the update to the
* extents of the selection mask, as it cannot extend beyond
* them.
*/
if (gimp_drawable_mask_intersect (drawable, &x, &y, &width, &height))
{
PixelRegion shadowPR;
pixel_region_init (&shadowPR, image->shadow,
x, y, width, height, FALSE);
gimp_drawable_apply_region (drawable, &shadowPR,
push_undo, undo_desc,
GIMP_OPACITY_OPAQUE, GIMP_REPLACE_MODE,
NULL, x, y);
}
}
void
gimp_drawable_fill (GimpDrawable *drawable,
const GimpRGB *color,
const GimpPattern *pattern)
{
GimpItem *item;
GimpImage *image;
GimpImageType drawable_type;
PixelRegion destPR;
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (color != NULL || pattern != NULL);
g_return_if_fail (pattern == NULL || GIMP_IS_PATTERN (pattern));
item = GIMP_ITEM (drawable);
image = gimp_item_get_image (item);
drawable_type = gimp_drawable_type (drawable);
pixel_region_init (&destPR, gimp_drawable_get_tiles (drawable),
0, 0, gimp_item_width (item), gimp_item_height (item),
TRUE);
if (color)
{
guchar tmp[MAX_CHANNELS];
guchar c[MAX_CHANNELS];
gimp_rgba_get_uchar (color,
&tmp[RED_PIX],
&tmp[GREEN_PIX],
&tmp[BLUE_PIX],
&tmp[ALPHA_PIX]);
gimp_image_transform_color (image, drawable_type, c, GIMP_RGB, tmp);
if (GIMP_IMAGE_TYPE_HAS_ALPHA (drawable_type))
c[GIMP_IMAGE_TYPE_BYTES (drawable_type) - 1] = tmp[ALPHA_PIX];
else
c[GIMP_IMAGE_TYPE_BYTES (drawable_type)] = OPAQUE_OPACITY;
color_region (&destPR, c);
}
else
{
TempBuf *pat_buf;
gboolean new_buf;
pat_buf = gimp_image_transform_temp_buf (image, drawable_type,
pattern->mask, &new_buf);
pattern_region (&destPR, NULL, pat_buf, 0, 0);
if (new_buf)
temp_buf_free (pat_buf);
}
gimp_drawable_update (drawable,
0, 0,
gimp_item_width (item),
gimp_item_height (item));
}
void
gimp_drawable_fill_by_type (GimpDrawable *drawable,
GimpContext *context,
GimpFillType fill_type)
{
GimpRGB color;
GimpPattern *pattern = NULL;
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
switch (fill_type)
{
case GIMP_FOREGROUND_FILL:
gimp_context_get_foreground (context, &color);
break;
case GIMP_BACKGROUND_FILL:
gimp_context_get_background (context, &color);
break;
case GIMP_WHITE_FILL:
gimp_rgba_set (&color, 1.0, 1.0, 1.0, GIMP_OPACITY_OPAQUE);
break;
case GIMP_TRANSPARENT_FILL:
gimp_rgba_set (&color, 0.0, 0.0, 0.0, GIMP_OPACITY_TRANSPARENT);
break;
case GIMP_PATTERN_FILL:
pattern = gimp_context_get_pattern (context);
break;
case GIMP_NO_FILL:
return;
default:
g_warning ("%s: unknown fill type %d", G_STRFUNC, fill_type);
return;
}
gimp_drawable_fill (drawable, pattern ? NULL : &color, pattern);
}
gboolean
gimp_drawable_mask_bounds (GimpDrawable *drawable,
gint *x1,
gint *y1,
gint *x2,
gint *y2)
{
GimpItem *item;
GimpImage *image;
GimpChannel *selection;
gint tmp_x1, tmp_y1;
gint tmp_x2, tmp_y2;
gboolean retval;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
item = GIMP_ITEM (drawable);
g_return_val_if_fail (gimp_item_is_attached (item), FALSE);
image = gimp_item_get_image (item);
selection = gimp_image_get_mask (image);
if (GIMP_DRAWABLE (selection) != drawable &&
gimp_channel_bounds (selection, &tmp_x1, &tmp_y1, &tmp_x2, &tmp_y2))
{
gint off_x, off_y;
gimp_item_offsets (item, &off_x, &off_y);
tmp_x1 = CLAMP (tmp_x1 - off_x, 0, gimp_item_width (item));
tmp_y1 = CLAMP (tmp_y1 - off_y, 0, gimp_item_height (item));
tmp_x2 = CLAMP (tmp_x2 - off_x, 0, gimp_item_width (item));
tmp_y2 = CLAMP (tmp_y2 - off_y, 0, gimp_item_height (item));
retval = TRUE;
}
else
{
tmp_x1 = 0;
tmp_y1 = 0;
tmp_x2 = gimp_item_width (item);
tmp_y2 = gimp_item_height (item);
retval = FALSE;
}
if (x1) *x1 = tmp_x1;
if (y1) *y1 = tmp_y1;
if (x2) *x2 = tmp_x2;
if (y2) *y2 = tmp_y2;
return retval;;
}
gboolean
gimp_drawable_mask_intersect (GimpDrawable *drawable,
gint *x,
gint *y,
gint *width,
gint *height)
{
GimpItem *item;
GimpImage *image;
GimpChannel *selection;
gint tmp_x, tmp_y;
gint tmp_width, tmp_height;
gboolean retval;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
item = GIMP_ITEM (drawable);
g_return_val_if_fail (gimp_item_is_attached (item), FALSE);
image = gimp_item_get_image (item);
selection = gimp_image_get_mask (image);
if (GIMP_DRAWABLE (selection) != drawable &&
gimp_channel_bounds (selection, &tmp_x, &tmp_y, &tmp_width, &tmp_height))
{
gint off_x, off_y;
gimp_item_offsets (item, &off_x, &off_y);
retval = gimp_rectangle_intersect (tmp_x - off_x, tmp_y - off_y,
tmp_width - tmp_x, tmp_height - tmp_y,
0, 0,
gimp_item_width (item),
gimp_item_height (item),
&tmp_x, &tmp_y,
&tmp_width, &tmp_height);
}
else
{
tmp_x = 0;
tmp_y = 0;
tmp_width = gimp_item_width (item);
tmp_height = gimp_item_height (item);
retval = TRUE;
}
if (x) *x = tmp_x;
if (y) *y = tmp_y;
if (width) *width = tmp_width;
if (height) *height = tmp_height;
return retval;
}
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));
}
GimpImageType
gimp_drawable_type_without_alpha (const GimpDrawable *drawable)
{
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), -1);
return GIMP_IMAGE_TYPE_WITHOUT_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));
}
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_bytes_without_alpha (const GimpDrawable *drawable)
{
GimpImageType type;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), -1);
type = GIMP_IMAGE_TYPE_WITHOUT_ALPHA (gimp_drawable_type (drawable));
return GIMP_IMAGE_TYPE_BYTES (type);
}
gboolean
gimp_drawable_has_floating_sel (const GimpDrawable *drawable)
{
GimpImage *image;
GimpLayer *floating_sel;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
image = gimp_item_get_image (GIMP_ITEM (drawable));
floating_sel = gimp_image_floating_sel (image);
return (floating_sel && floating_sel->fs.drawable == drawable);
}
const guchar *
gimp_drawable_get_colormap (const GimpDrawable *drawable)
{
GimpImage *image;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
image = gimp_item_get_image (GIMP_ITEM (drawable));
return image ? gimp_image_get_colormap (image) : NULL;
}
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