mirror of https://github.com/GNOME/gimp.git
378 lines
11 KiB
C
378 lines
11 KiB
C
/* 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 "appenv.h"
|
|
#include "drawable.h"
|
|
#include "gdisplay.h"
|
|
#include "gimage.h"
|
|
#include "gimage_mask.h"
|
|
#include "image_map.h"
|
|
#include "tile_manager.h"
|
|
|
|
#include "tile_manager_pvt.h"
|
|
|
|
|
|
#define WAITING 0
|
|
#define WORKING 1
|
|
|
|
#define WORK_DELAY 1
|
|
|
|
/* Local structures */
|
|
typedef struct _ImageMap
|
|
{
|
|
GDisplay *gdisp;
|
|
GimpDrawable *drawable;
|
|
TileManager *undo_tiles;
|
|
ImageMapApplyFunc apply_func;
|
|
gpointer user_data;
|
|
PixelRegion srcPR, destPR;
|
|
void *pr;
|
|
gint state;
|
|
gint idle;
|
|
} _ImageMap;
|
|
|
|
|
|
/**************************/
|
|
/* Function definitions */
|
|
|
|
static gint
|
|
image_map_do (gpointer data)
|
|
{
|
|
_ImageMap *_image_map;
|
|
GImage *gimage;
|
|
PixelRegion shadowPR;
|
|
int x, y, w, h;
|
|
|
|
_image_map = (_ImageMap *) data;
|
|
|
|
if (! (gimage = drawable_gimage ( (_image_map->drawable))))
|
|
{
|
|
_image_map->state = WAITING;
|
|
return FALSE;
|
|
}
|
|
|
|
/* Process the pixel regions and apply the image mapping */
|
|
(* _image_map->apply_func) (&_image_map->srcPR, &_image_map->destPR, _image_map->user_data);
|
|
|
|
x = _image_map->destPR.x;
|
|
y = _image_map->destPR.y;
|
|
w = _image_map->destPR.w;
|
|
h = _image_map->destPR.h;
|
|
|
|
/* apply the results */
|
|
pixel_region_init (&shadowPR, gimage->shadow, x, y, w, h, FALSE);
|
|
gimage_apply_image (gimage, _image_map->drawable, &shadowPR,
|
|
FALSE, OPAQUE_OPACITY, REPLACE_MODE, NULL, x, y);
|
|
|
|
/* display the results */
|
|
if (_image_map->gdisp)
|
|
{
|
|
drawable_update ( (_image_map->drawable), x, y, w, h);
|
|
gdisplay_flush_now (_image_map->gdisp);
|
|
}
|
|
|
|
_image_map->pr = pixel_regions_process (_image_map->pr);
|
|
|
|
if (_image_map->pr == NULL)
|
|
{
|
|
_image_map->state = WAITING;
|
|
gdisplays_flush ();
|
|
return FALSE;
|
|
}
|
|
else
|
|
return TRUE;
|
|
}
|
|
|
|
ImageMap
|
|
image_map_create (void *gdisp_ptr,
|
|
GimpDrawable *drawable)
|
|
{
|
|
_ImageMap *_image_map;
|
|
|
|
_image_map = g_new (_ImageMap, 1);
|
|
_image_map->gdisp = (GDisplay *) gdisp_ptr;
|
|
_image_map->drawable = drawable;
|
|
_image_map->undo_tiles = NULL;
|
|
_image_map->state = WAITING;
|
|
|
|
/* Interactive tools based on image_map disable the undo stack */
|
|
/* to avert any unintented undo interaction through the UI */
|
|
|
|
gimp_image_undo_freeze(_image_map->gdisp->gimage);
|
|
gdisplay_set_menu_sensitivity (_image_map->gdisp);
|
|
return (ImageMap) _image_map;
|
|
}
|
|
|
|
void
|
|
image_map_apply (ImageMap image_map,
|
|
ImageMapApplyFunc apply_func,
|
|
void *user_data)
|
|
{
|
|
_ImageMap *_image_map;
|
|
gint x1, y1, x2, y2;
|
|
|
|
_image_map = (_ImageMap *) image_map;
|
|
_image_map->apply_func = apply_func;
|
|
_image_map->user_data = user_data;
|
|
|
|
/* If we're still working, remove the timer */
|
|
if (_image_map->state == WORKING)
|
|
{
|
|
gtk_idle_remove (_image_map->idle);
|
|
pixel_regions_process_stop (_image_map->pr);
|
|
_image_map->pr = NULL;
|
|
}
|
|
|
|
/* Make sure the drawable is still valid */
|
|
if (! drawable_gimage ( (_image_map->drawable)))
|
|
return;
|
|
|
|
/* The application should occur only within selection bounds */
|
|
drawable_mask_bounds ( (_image_map->drawable), &x1, &y1, &x2, &y2);
|
|
|
|
/* If undo tiles don't exist, or change size, (re)allocate */
|
|
if (!_image_map->undo_tiles ||
|
|
_image_map->undo_tiles->x != x1 ||
|
|
_image_map->undo_tiles->y != y1 ||
|
|
_image_map->undo_tiles->width != (x2 - x1) ||
|
|
_image_map->undo_tiles->height != (y2 - y1))
|
|
{
|
|
/* If either the extents changed or the tiles don't exist, allocate new */
|
|
if (!_image_map->undo_tiles ||
|
|
_image_map->undo_tiles->width != (x2 - x1) ||
|
|
_image_map->undo_tiles->height != (y2 - y1))
|
|
{
|
|
/* Destroy old tiles--If they exist */
|
|
if (_image_map->undo_tiles != NULL)
|
|
tile_manager_destroy (_image_map->undo_tiles);
|
|
|
|
/* Allocate new tiles */
|
|
_image_map->undo_tiles = tile_manager_new ((x2 - x1), (y2 - y1),
|
|
drawable_bytes ( (_image_map->drawable)));
|
|
}
|
|
|
|
/* Copy from the image to the new tiles */
|
|
pixel_region_init (&_image_map->srcPR, drawable_data ( (_image_map->drawable)),
|
|
x1, y1, (x2 - x1), (y2 - y1), FALSE);
|
|
pixel_region_init (&_image_map->destPR, _image_map->undo_tiles,
|
|
0, 0, (x2 - x1), (y2 - y1), TRUE);
|
|
|
|
copy_region (&_image_map->srcPR, &_image_map->destPR);
|
|
|
|
/* Set the offsets */
|
|
_image_map->undo_tiles->x = x1;
|
|
_image_map->undo_tiles->y = y1;
|
|
}
|
|
else /* _image_map->undo_tiles exist AND drawable dimensions have not changed... */
|
|
{
|
|
/* Reset to initial drawable conditions. */
|
|
/* Copy from the backup undo tiles to the drawable */
|
|
pixel_region_init (&_image_map->srcPR, _image_map->undo_tiles, 0, 0,
|
|
_image_map->undo_tiles->width,
|
|
_image_map->undo_tiles->height,
|
|
FALSE);
|
|
pixel_region_init (&_image_map->destPR, drawable_data ( (_image_map->drawable)),
|
|
_image_map->undo_tiles->x, _image_map->undo_tiles->y,
|
|
_image_map->undo_tiles->width,
|
|
_image_map->undo_tiles->height,
|
|
TRUE);
|
|
|
|
copy_region (&_image_map->srcPR, &_image_map->destPR);
|
|
}
|
|
|
|
/* Configure the src from the drawable data */
|
|
pixel_region_init (&_image_map->srcPR, _image_map->undo_tiles,
|
|
0, 0, (x2 - x1), (y2 - y1), FALSE);
|
|
|
|
/* Configure the dest as the shadow buffer */
|
|
pixel_region_init (&_image_map->destPR, drawable_shadow ( (_image_map->drawable)),
|
|
x1, y1, (x2 - x1), (y2 - y1), TRUE);
|
|
|
|
/* Apply the image transformation to the pixels */
|
|
_image_map->pr = pixel_regions_register (2, &_image_map->srcPR, &_image_map->destPR);
|
|
|
|
/* Start the intermittant work procedure */
|
|
_image_map->state = WORKING;
|
|
_image_map->idle = gtk_idle_add (image_map_do, image_map);
|
|
}
|
|
|
|
void
|
|
image_map_commit (ImageMap image_map)
|
|
{
|
|
_ImageMap *_image_map;
|
|
gint x1, y1, x2, y2;
|
|
|
|
_image_map = (_ImageMap *) image_map;
|
|
|
|
if (_image_map->state == WORKING)
|
|
{
|
|
gtk_idle_remove (_image_map->idle);
|
|
|
|
/* Finish the changes */
|
|
while (image_map_do (image_map)) ;
|
|
}
|
|
|
|
/* Make sure the drawable is still valid */
|
|
if (! drawable_gimage ( (_image_map->drawable)))
|
|
return;
|
|
|
|
/* Interactive phase ends: we can commit an undo frame now */
|
|
gimp_image_undo_thaw(_image_map->gdisp->gimage);
|
|
|
|
/* Register an undo step */
|
|
if (_image_map->undo_tiles)
|
|
{
|
|
x1 = _image_map->undo_tiles->x;
|
|
y1 = _image_map->undo_tiles->y;
|
|
x2 = _image_map->undo_tiles->x + _image_map->undo_tiles->width;
|
|
y2 = _image_map->undo_tiles->y + _image_map->undo_tiles->height;
|
|
drawable_apply_image ( (_image_map->drawable), x1, y1, x2, y2, _image_map->undo_tiles, FALSE);
|
|
}
|
|
|
|
gdisplay_set_menu_sensitivity (_image_map->gdisp);
|
|
g_free (_image_map);
|
|
}
|
|
|
|
void
|
|
image_map_clear (ImageMap image_map)
|
|
{
|
|
_ImageMap *_image_map;
|
|
PixelRegion srcPR, destPR;
|
|
|
|
_image_map = (_ImageMap *) image_map;
|
|
|
|
if (_image_map->state == WORKING)
|
|
{
|
|
gtk_idle_remove (_image_map->idle);
|
|
pixel_regions_process_stop (_image_map->pr);
|
|
_image_map->pr = NULL;
|
|
}
|
|
|
|
_image_map->state = WAITING;
|
|
/* Make sure the drawable is still valid */
|
|
if (! drawable_gimage ( (_image_map->drawable)))
|
|
return;
|
|
|
|
/* restore the original image */
|
|
if (_image_map->undo_tiles)
|
|
{
|
|
/* Copy from the drawable to the tiles */
|
|
pixel_region_init (&srcPR, _image_map->undo_tiles, 0, 0,
|
|
_image_map->undo_tiles->width,
|
|
_image_map->undo_tiles->height,
|
|
FALSE);
|
|
pixel_region_init (&destPR, drawable_data ( (_image_map->drawable)),
|
|
_image_map->undo_tiles->x, _image_map->undo_tiles->y,
|
|
_image_map->undo_tiles->width,
|
|
_image_map->undo_tiles->height,
|
|
TRUE);
|
|
|
|
/* if the user has changed the image depth get out quickly */
|
|
if (destPR.bytes != srcPR.bytes)
|
|
{
|
|
g_message ("image depth change, unable to restore original image");
|
|
tile_manager_destroy (_image_map->undo_tiles);
|
|
gimp_image_undo_thaw(_image_map->gdisp->gimage);
|
|
gdisplay_set_menu_sensitivity (_image_map->gdisp);
|
|
g_free (_image_map);
|
|
return;
|
|
}
|
|
|
|
copy_region (&srcPR, &destPR);
|
|
|
|
/* Update the area */
|
|
drawable_update ( (_image_map->drawable),
|
|
_image_map->undo_tiles->x, _image_map->undo_tiles->y,
|
|
_image_map->undo_tiles->width,
|
|
_image_map->undo_tiles->height);
|
|
|
|
/* Free the undo_tiles tile manager */
|
|
tile_manager_destroy (_image_map->undo_tiles);
|
|
_image_map->undo_tiles = NULL;
|
|
}
|
|
}
|
|
|
|
void
|
|
image_map_abort (ImageMap image_map)
|
|
{
|
|
_ImageMap *_image_map = (_ImageMap *) image_map;
|
|
|
|
image_map_clear(image_map);
|
|
gimp_image_undo_thaw(_image_map->gdisp->gimage);
|
|
gdisplay_set_menu_sensitivity (_image_map->gdisp);
|
|
g_free (image_map);
|
|
}
|
|
|
|
unsigned char *
|
|
image_map_get_color_at (ImageMap image_map,
|
|
gint x,
|
|
gint y)
|
|
{
|
|
Tile *tile;
|
|
unsigned char *src;
|
|
unsigned char *dest;
|
|
_ImageMap *_image_map;
|
|
|
|
if(!image_map)
|
|
return NULL;
|
|
|
|
_image_map = (_ImageMap *) image_map;
|
|
|
|
if (x >= 0 && x < gimp_drawable_width (_image_map->drawable) &&
|
|
y >= 0 && y < gimp_drawable_height (_image_map->drawable))
|
|
{
|
|
/* Check if done damage to original image */
|
|
if (!_image_map->undo_tiles)
|
|
return (gimp_drawable_get_color_at (_image_map->drawable, x, y));
|
|
|
|
if (!image_map ||
|
|
(!gimp_drawable_gimage(_image_map->drawable) &&
|
|
gimp_drawable_is_indexed(_image_map->drawable)) ||
|
|
x < 0 || y < 0 ||
|
|
x >= _image_map->undo_tiles->width ||
|
|
y >= _image_map->undo_tiles->height)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
dest = g_new(unsigned char, 5);
|
|
|
|
tile = tile_manager_get_tile (_image_map->undo_tiles, x, y,
|
|
TRUE, FALSE);
|
|
|
|
src = tile_data_pointer (tile, x % TILE_WIDTH, y % TILE_HEIGHT);
|
|
|
|
gimp_image_get_color (gimp_drawable_gimage(_image_map->drawable),
|
|
gimp_drawable_type (_image_map->drawable), dest, src);
|
|
|
|
if(TYPE_HAS_ALPHA(gimp_drawable_type (_image_map->drawable)))
|
|
dest[3] = src[gimp_drawable_bytes (_image_map->drawable) - 1];
|
|
else
|
|
dest[3] = 255;
|
|
if (gimp_drawable_is_indexed(_image_map->drawable))
|
|
dest[4] = src[0];
|
|
else
|
|
dest[4] = 0;
|
|
tile_release (tile, FALSE);
|
|
return dest;
|
|
}
|
|
else /* out of bounds error */
|
|
{
|
|
return NULL;
|
|
}
|
|
}
|