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gimp/app/core/gimpdrawable.c

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/* The GIMP -- an 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 "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-funcs.h"
#include "gimp.h"
#include "gimp-utils.h"
#include "gimpchannel.h"
#include "gimpcontext.h"
#include "gimpdrawable-combine.h"
#include "gimpdrawable-preview.h"
#include "gimpdrawable-transform.h"
#include "gimpimage.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_class_init (GimpDrawableClass *klass);
static void gimp_drawable_init (GimpDrawable *drawable);
static void gimp_drawable_pickable_iface_init (GimpPickableInterface *pickable_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,
gboolean add_alpha);
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,
gboolean supersample,
gint recursion_level,
gboolean clip_result,
GimpProgress *progress);
static guchar * gimp_drawable_get_color_at (GimpPickable *pickable,
gint x,
gint y);
static void gimp_drawable_real_update (GimpDrawable *drawable,
gint x,
gint y,
gint width,
gint height);
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);
/* private variables */
static guint gimp_drawable_signals[LAST_SIGNAL] = { 0 };
static GimpItemClass *parent_class = NULL;
GType
gimp_drawable_get_type (void)
{
static GType drawable_type = 0;
if (! drawable_type)
{
static const GTypeInfo drawable_info =
{
sizeof (GimpDrawableClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_drawable_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpDrawable),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_drawable_init,
};
static const GInterfaceInfo pickable_iface_info =
{
(GInterfaceInitFunc) gimp_drawable_pickable_iface_init,
NULL, /* iface_finalize */
NULL /* iface_data */
};
drawable_type = g_type_register_static (GIMP_TYPE_ITEM,
"GimpDrawable",
&drawable_info, 0);
g_type_add_interface_static (drawable_type, GIMP_TYPE_PICKABLE,
&pickable_iface_info);
}
return drawable_type;
}
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);
parent_class = g_type_class_peek_parent (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->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->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;
}
static void
gimp_drawable_pickable_iface_init (GimpPickableInterface *pickable_iface)
{
pickable_iface->get_image = gimp_item_get_image;
pickable_iface->get_image_type = gimp_drawable_type;
pickable_iface->get_tiles = gimp_drawable_data;
pickable_iface->get_color_at = gimp_drawable_get_color_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;
if (drawable->tiles)
memsize += tile_manager_get_memsize (drawable->tiles, FALSE);
if (drawable->preview_cache)
*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 = item->width;
*height = item->height;
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,
gboolean add_alpha)
{
GimpDrawable *drawable;
GimpItem *new_item;
GimpDrawable *new_drawable;
GimpImageType new_image_type;
PixelRegion srcPR;
PixelRegion destPR;
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,
add_alpha);
if (! GIMP_IS_DRAWABLE (new_item))
return new_item;
drawable = GIMP_DRAWABLE (item);
new_drawable = GIMP_DRAWABLE (new_item);
if (add_alpha)
new_image_type = gimp_drawable_type_with_alpha (drawable);
else
new_image_type = gimp_drawable_type (drawable);
gimp_drawable_configure (new_drawable,
gimp_item_get_image (GIMP_ITEM (drawable)),
item->offset_x,
item->offset_y,
item->width,
item->height,
new_image_type,
GIMP_OBJECT (new_drawable)->name);
pixel_region_init (&srcPR, drawable->tiles,
0, 0,
item->width,
item->height,
FALSE);
pixel_region_init (&destPR, new_drawable->tiles,
0, 0,
new_item->width,
new_item->height,
TRUE);
if (new_image_type == drawable->type)
copy_region (&srcPR, &destPR);
else
add_alpha_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 *gimage = gimp_item_get_image (item);
if (gimp_drawable_has_floating_sel (drawable))
floating_sel_relax (gimp_image_floating_sel (gimage), 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 (gimage), 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);
PixelRegion srcPR, destPR;
TileManager *new_tiles;
new_tiles = tile_manager_new (new_width, new_height, drawable->bytes);
pixel_region_init (&srcPR, drawable->tiles,
0, 0, item->width, item->height,
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 == item->width &&
new_height == item->height &&
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,
item->width, item->height,
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), drawable,
context, bg);
color_region (&destPR, bg);
}
/* Determine whether anything needs to be copied */
if (copy_width && copy_height)
{
pixel_region_init (&srcPR, drawable->tiles,
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 (drawable->tiles, &old_off_x, &old_off_y);
tile_manager_set_offsets (drawable->tiles, off_x, off_y);
tiles = gimp_drawable_transform_tiles_flip (drawable, context,
drawable->tiles,
flip_type, axis,
clip_result);
tile_manager_set_offsets (drawable->tiles, 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 (drawable->tiles, &old_off_x, &old_off_y);
tile_manager_set_offsets (drawable->tiles, off_x, off_y);
tiles = gimp_drawable_transform_tiles_rotate (drawable, context,
drawable->tiles,
rotate_type, center_x, center_y,
clip_result);
tile_manager_set_offsets (drawable->tiles, 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,
gboolean supersample,
gint recursion_level,
gboolean 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 (drawable->tiles, &old_off_x, &old_off_y);
tile_manager_set_offsets (drawable->tiles, off_x, off_y);
tiles = gimp_drawable_transform_tiles_affine (drawable, context,
drawable->tiles,
matrix, direction,
interpolation_type,
supersample, recursion_level,
clip_result,
progress);
tile_manager_set_offsets (drawable->tiles, old_off_x, old_off_y);
if (tiles)
{
gimp_drawable_transform_paste (drawable, tiles, FALSE);
tile_manager_unref (tiles);
}
}
static guchar *
gimp_drawable_get_color_at (GimpPickable *pickable,
gint x,
gint y)
{
GimpDrawable *drawable = GIMP_DRAWABLE (pickable);
GimpImage *gimage = gimp_item_get_image (GIMP_ITEM (drawable));
Tile *tile;
guchar *src;
guchar *dest;
/* do not make this a g_return_if_fail() */
if (x < 0 || x >= GIMP_ITEM (drawable)->width ||
y < 0 || y >= GIMP_ITEM (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 (gimage, gimp_drawable_type (drawable), src, dest);
if (gimp_drawable_is_indexed (drawable))
dest[4] = src[0];
else
dest[4] = 0;
tile_release (tile, FALSE);
return dest;
}
static void
gimp_drawable_real_update (GimpDrawable *drawable,
gint x,
gint y,
gint width,
gint height)
{
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (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)
{
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 (item->width != tile_manager_width (tiles) ||
item->height != 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_data (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_data (drawable), j, i, TRUE, FALSE /* TRUE */);
tile_manager_map_tile (tiles,
j, i, dest_tile);
tile_manager_map_tile (gimp_drawable_data (drawable),
j, i, src_tile);
#if 0
swap_pixels (tile_data_pointer (src_tile, 0, 0),
tile_data_pointer (dest_tile, 0, 0),
tile_size (src_tile));
#endif
tile_release (dest_tile, FALSE /* TRUE */);
tile_release (src_tile, FALSE /* TRUE */);
}
}
}
}
else
{
PixelRegion PR1, PR2;
pixel_region_init (&PR1, tiles,
0, 0, width, height, TRUE);
pixel_region_init (&PR2, gimp_drawable_data (drawable),
x, y, width, height, TRUE);
swap_region (&PR1, &PR2);
}
gimp_drawable_update (drawable, x, y, width, height);
}
/* public functions */
void
gimp_drawable_configure (GimpDrawable *drawable,
GimpImage *gimage,
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 (gimage));
g_return_if_fail (width > 0 && height > 0);
gimp_item_configure (GIMP_ITEM (drawable), gimage,
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);
}
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 *gimage;
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);
gimage = gimp_item_get_image (item);
if (! gimp_item_is_attached (GIMP_ITEM (drawable)))
push_undo = FALSE;
if (item->width != tile_manager_width (tiles) ||
item->height != tile_manager_height (tiles) ||
item->offset_x != offset_x ||
item->offset_y != offset_y)
{
gimp_drawable_update (drawable, 0, 0, item->width, item->height);
}
if (gimp_drawable_has_floating_sel (drawable))
floating_sel_relax (gimp_image_floating_sel (gimage), 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 (gimage), FALSE);
gimp_drawable_update (drawable, 0, 0, item->width, item->height);
}
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_shadow (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_shadow (gimp_item_get_image (item),
item->width, item->height,
drawable->bytes);
}
void
gimp_drawable_merge_shadow (GimpDrawable *drawable,
gboolean push_undo,
const gchar *undo_desc)
{
GimpImage *gimage;
gint x, y, width, height;
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)));
gimage = gimp_item_get_image (GIMP_ITEM (drawable));
g_return_if_fail (gimage->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, gimage->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 *gimage;
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);
gimage = gimp_item_get_image (item);
drawable_type = gimp_drawable_type (drawable);
pixel_region_init (&destPR, gimp_drawable_data (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 (gimage, drawable, 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 (gimage, drawable,
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 *gimage;
GimpChannel *selection;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
g_return_val_if_fail (x1 != NULL, FALSE);
g_return_val_if_fail (y1 != NULL, FALSE);
g_return_val_if_fail (x2 != NULL, FALSE);
g_return_val_if_fail (y2 != NULL, FALSE);
item = GIMP_ITEM (drawable);
*x1 = 0;
*y1 = 0;
*x2 = gimp_item_width (item);
*y2 = gimp_item_height (item);
g_return_val_if_fail (gimp_item_is_attached (item), FALSE);
gimage = gimp_item_get_image (item);
selection = gimp_image_get_mask (gimage);
if (GIMP_DRAWABLE (selection) != drawable &&
gimp_channel_bounds (selection, x1, y1, x2, y2))
{
gint off_x, off_y;
gimp_item_offsets (item, &off_x, &off_y);
*x1 = CLAMP (*x1 - off_x, 0, gimp_item_width (item));
*y1 = CLAMP (*y1 - off_y, 0, gimp_item_height (item));
*x2 = CLAMP (*x2 - off_x, 0, gimp_item_width (item));
*y2 = CLAMP (*y2 - off_y, 0, gimp_item_height (item));
return TRUE;
}
*x1 = 0;
*y1 = 0;
*x2 = gimp_item_width (item);
*y2 = gimp_item_height (item);
return FALSE;
}
gboolean
gimp_drawable_mask_intersect (GimpDrawable *drawable,
gint *x,
gint *y,
gint *width,
gint *height)
{
GimpItem *item;
GimpImage *gimage;
GimpChannel *selection;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
g_return_val_if_fail (x != NULL, FALSE);
g_return_val_if_fail (y != NULL, FALSE);
g_return_val_if_fail (width != NULL, FALSE);
g_return_val_if_fail (height != NULL, FALSE);
item = GIMP_ITEM (drawable);
*x = 0;
*y = 0;
*width = gimp_item_width (item);
*height = gimp_item_height (item);
g_return_val_if_fail (gimp_item_is_attached (item), FALSE);
gimage = gimp_item_get_image (item);
selection = gimp_image_get_mask (gimage);
if (GIMP_DRAWABLE (selection) != drawable &&
gimp_channel_bounds (selection, x, y, width, height))
{
gint off_x, off_y;
gimp_item_offsets (item, &off_x, &off_y);
return gimp_rectangle_intersect (*x - off_x, *y - off_y,
*width - *x, *height - *y,
0, 0,
gimp_item_width (item),
gimp_item_height (item),
x, y,
width, height);
}
*x = 0;
*y = 0;
*width = gimp_item_width (item);
*height = gimp_item_height (item);
return TRUE;
}
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 *gimage;
GimpLayer *floating_sel;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
gimage = gimp_item_get_image (GIMP_ITEM (drawable));
floating_sel = gimp_image_floating_sel (gimage);
return (floating_sel && floating_sel->fs.drawable == drawable);
}
TileManager *
gimp_drawable_data (const GimpDrawable *drawable)
{
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
return drawable->tiles;
}
guchar *
gimp_drawable_cmap (const GimpDrawable *drawable)
{
GimpImage *gimage;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
gimage = gimp_item_get_image (GIMP_ITEM (drawable));
if (gimage)
return gimage->cmap;
return NULL;
}
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