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gimp/app/core/gimpimagemap.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 <gegl.h>
#include "core-types.h"
#include "base/pixel-region.h"
#include "base/tile-manager.h"
#include "base/tile.h"
#include "paint-funcs/paint-funcs.h"
#include "gimpdrawable.h"
#include "gimpimage.h"
#include "gimpimagemap.h"
#include "gimpmarshal.h"
#include "gimppickable.h"
#include "gimpviewable.h"
#ifdef __GNUC__
#warning FIXME: gegl_node_add_child() needs to be public
#endif
GeglNode * gegl_node_add_child (GeglNode *self,
GeglNode *child);
#ifdef __GNUC__
#warning FIXME: gegl_node_get_pad() or something similar needs to be public
#endif
gpointer gegl_node_get_pad (GeglNode *self,
const gchar *pad_name);
enum
{
FLUSH,
LAST_SIGNAL
};
struct _GimpImageMap
{
GimpObject parent_instance;
GimpDrawable *drawable;
gchar *undo_desc;
TileManager *undo_tiles;
gint undo_offset_x;
gint undo_offset_y;
GimpImageMapApplyFunc apply_func;
gpointer apply_data;
PixelRegion srcPR;
PixelRegion destPR;
PixelRegionIterator *PRI;
GeglNode *gegl;
GeglNode *input;
GeglNode *shift;
GeglNode *operation;
GeglNode *output;
GeglProcessor *processor;
guint idle_id;
};
static void gimp_image_map_pickable_iface_init (GimpPickableInterface *iface);
static void gimp_image_map_dispose (GObject *object);
static void gimp_image_map_finalize (GObject *object);
static GimpImage * gimp_image_map_get_image (GimpPickable *pickable);
static GimpImageType gimp_image_map_get_image_type (GimpPickable *pickable);
static gint gimp_image_map_get_bytes (GimpPickable *pickable);
static TileManager * gimp_image_map_get_tiles (GimpPickable *pickable);
static gboolean gimp_image_map_get_pixel_at (GimpPickable *pickable,
gint x,
gint y,
guchar *pixel);
static gboolean gimp_image_map_do (GimpImageMap *image_map);
static void gimp_image_map_data_written (GObject *operation,
const GeglRectangle *extent,
GimpImageMap *image_map);
G_DEFINE_TYPE_WITH_CODE (GimpImageMap, gimp_image_map, GIMP_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (GIMP_TYPE_PICKABLE,
gimp_image_map_pickable_iface_init))
#define parent_class gimp_image_map_parent_class
static guint image_map_signals[LAST_SIGNAL] = { 0 };
static void
gimp_image_map_class_init (GimpImageMapClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
image_map_signals[FLUSH] =
g_signal_new ("flush",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageMapClass, flush),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
object_class->dispose = gimp_image_map_dispose;
object_class->finalize = gimp_image_map_finalize;
}
static void
gimp_image_map_pickable_iface_init (GimpPickableInterface *iface)
{
iface->get_image = gimp_image_map_get_image;
iface->get_image_type = gimp_image_map_get_image_type;
iface->get_bytes = gimp_image_map_get_bytes;
iface->get_tiles = gimp_image_map_get_tiles;
iface->get_pixel_at = gimp_image_map_get_pixel_at;
}
static void
gimp_image_map_init (GimpImageMap *image_map)
{
image_map->drawable = NULL;
image_map->undo_desc = NULL;
image_map->undo_tiles = NULL;
image_map->undo_offset_x = 0;
image_map->undo_offset_y = 0;
image_map->apply_func = NULL;
image_map->apply_data = NULL;
image_map->PRI = NULL;
image_map->idle_id = 0;
}
static void
gimp_image_map_dispose (GObject *object)
{
GimpImageMap *image_map = GIMP_IMAGE_MAP (object);
if (image_map->drawable)
gimp_viewable_preview_thaw (GIMP_VIEWABLE (image_map->drawable));
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gimp_image_map_finalize (GObject *object)
{
GimpImageMap *image_map = GIMP_IMAGE_MAP (object);
if (image_map->undo_desc)
{
g_free (image_map->undo_desc);
image_map->undo_desc = NULL;
}
if (image_map->undo_tiles)
{
tile_manager_unref (image_map->undo_tiles);
image_map->undo_tiles = NULL;
}
if (image_map->idle_id)
{
g_source_remove (image_map->idle_id);
image_map->idle_id = 0;
if (image_map->processor)
{
g_object_unref (image_map->processor);
image_map->processor = NULL;
}
if (image_map->PRI)
{
pixel_regions_process_stop (image_map->PRI);
image_map->PRI = NULL;
}
}
if (image_map->gegl)
{
g_object_unref (image_map->gegl);
image_map->gegl = NULL;
image_map->input = NULL;
image_map->shift = NULL;
image_map->output = NULL;
}
if (image_map->operation)
{
g_object_unref (image_map->operation);
image_map->operation = NULL;
}
if (image_map->drawable)
{
g_object_unref (image_map->drawable);
image_map->drawable = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GimpImage *
gimp_image_map_get_image (GimpPickable *pickable)
{
GimpImageMap *image_map = GIMP_IMAGE_MAP (pickable);
return gimp_pickable_get_image (GIMP_PICKABLE (image_map->drawable));
}
static GimpImageType
gimp_image_map_get_image_type (GimpPickable *pickable)
{
GimpImageMap *image_map = GIMP_IMAGE_MAP (pickable);
return gimp_pickable_get_image_type (GIMP_PICKABLE (image_map->drawable));
}
static gint
gimp_image_map_get_bytes (GimpPickable *pickable)
{
GimpImageMap *image_map = GIMP_IMAGE_MAP (pickable);
return gimp_pickable_get_bytes (GIMP_PICKABLE (image_map->drawable));
}
static TileManager *
gimp_image_map_get_tiles (GimpPickable *pickable)
{
GimpImageMap *image_map = GIMP_IMAGE_MAP (pickable);
if (image_map->undo_tiles)
return image_map->undo_tiles;
else
return gimp_pickable_get_tiles (GIMP_PICKABLE (image_map->drawable));
}
static gboolean
gimp_image_map_get_pixel_at (GimpPickable *pickable,
gint x,
gint y,
guchar *pixel)
{
GimpImageMap *image_map = GIMP_IMAGE_MAP (pickable);
GimpItem *item = GIMP_ITEM (image_map->drawable);
if (x >= 0 && x < gimp_item_width (item) &&
y >= 0 && y < gimp_item_height (item))
{
/* Check if done damage to original image */
if (image_map->undo_tiles)
{
gint offset_x = image_map->undo_offset_x;
gint offset_y = image_map->undo_offset_y;
gint width = tile_manager_width (image_map->undo_tiles);
gint height = tile_manager_height (image_map->undo_tiles);
if (x >= offset_x && x < offset_x + width &&
y >= offset_y && y < offset_y + height)
{
read_pixel_data_1 (image_map->undo_tiles,
x - offset_x,
y - offset_y,
pixel);
return TRUE;
}
}
return gimp_pickable_get_pixel_at (GIMP_PICKABLE (image_map->drawable),
x, y, pixel);
}
else /* out of bounds error */
{
return FALSE;
}
}
GimpImageMap *
gimp_image_map_new (GimpDrawable *drawable,
const gchar *undo_desc,
GeglNode *operation,
GimpImageMapApplyFunc apply_func,
gpointer apply_data)
{
GimpImageMap *image_map;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), NULL);
g_return_val_if_fail (operation == NULL || GEGL_IS_NODE (operation), NULL);
g_return_val_if_fail (operation != NULL || apply_func != NULL, NULL);
image_map = g_object_new (GIMP_TYPE_IMAGE_MAP, NULL);
image_map->drawable = g_object_ref (drawable);
image_map->undo_desc = g_strdup (undo_desc);
if (operation)
image_map->operation = g_object_ref (operation);
image_map->apply_func = apply_func;
image_map->apply_data = apply_data;
gimp_viewable_preview_freeze (GIMP_VIEWABLE (drawable));
return image_map;
}
void
gimp_image_map_apply (GimpImageMap *image_map,
const GeglRectangle *visible)
{
GeglRectangle rect;
gint undo_offset_x;
gint undo_offset_y;
gint undo_width;
gint undo_height;
g_return_if_fail (GIMP_IS_IMAGE_MAP (image_map));
/* If we're still working, remove the timer */
if (image_map->idle_id)
{
g_source_remove (image_map->idle_id);
image_map->idle_id = 0;
if (image_map->processor)
{
g_object_unref (image_map->processor);
image_map->processor = NULL;
}
if (image_map->PRI)
{
pixel_regions_process_stop (image_map->PRI);
image_map->PRI = NULL;
}
}
/* Make sure the drawable is still valid */
if (! gimp_item_is_attached (GIMP_ITEM (image_map->drawable)))
return;
/* The application should occur only within selection bounds */
if (! gimp_drawable_mask_intersect (image_map->drawable,
&rect.x, &rect.y,
&rect.width, &rect.height))
return;
/* If undo tiles don't exist, or change size, (re)allocate */
if (image_map->undo_tiles)
{
undo_offset_x = image_map->undo_offset_x;
undo_offset_y = image_map->undo_offset_y;
undo_width = tile_manager_width (image_map->undo_tiles);
undo_height = tile_manager_height (image_map->undo_tiles);
}
else
{
undo_offset_x = 0;
undo_offset_y = 0;
undo_width = 0;
undo_height = 0;
}
if (! image_map->undo_tiles ||
undo_offset_x != rect.x ||
undo_offset_y != rect.y ||
undo_width != rect.width ||
undo_height != rect.height)
{
/* If either the extents changed or the tiles don't exist,
* allocate new
*/
if (! image_map->undo_tiles ||
undo_width != rect.width ||
undo_height != rect.height)
{
/* Destroy old tiles */
if (image_map->undo_tiles)
tile_manager_unref (image_map->undo_tiles);
/* Allocate new tiles */
image_map->undo_tiles =
tile_manager_new (rect.width, rect.height,
gimp_drawable_bytes (image_map->drawable));
}
/* Copy from the image to the new tiles */
pixel_region_init (&image_map->srcPR,
gimp_drawable_get_tiles (image_map->drawable),
rect.x, rect.y,
rect.width, rect.height,
FALSE);
pixel_region_init (&image_map->destPR,
image_map->undo_tiles,
0, 0,
rect.width, rect.height,
TRUE);
copy_region (&image_map->srcPR, &image_map->destPR);
/* Set the offsets */
image_map->undo_offset_x = rect.x;
image_map->undo_offset_y = rect.y;
}
if (image_map->operation)
{
if (! image_map->gegl)
{
image_map->gegl = gegl_node_new ();
image_map->input =
gegl_node_new_child (image_map->gegl,
"operation", "gimp-tilemanager-source",
NULL);
image_map->shift =
gegl_node_new_child (image_map->gegl,
"operation", "shift",
NULL);
gegl_node_add_child (image_map->gegl, image_map->operation);
image_map->output =
gegl_node_new_child (image_map->gegl,
"operation", "gimp-tilemanager-sink",
NULL);
{
GObject *sink_operation;
g_object_get (image_map->output,
"gegl-operation", &sink_operation,
NULL);
g_signal_connect (sink_operation, "data-written",
G_CALLBACK (gimp_image_map_data_written),
image_map);
g_object_unref (sink_operation);
}
if (gegl_node_get_pad (image_map->operation, "input") &&
gegl_node_get_pad (image_map->operation, "output"))
{
/* if there are input and output pads we probably have a
* filter OP, connect it on both ends.
*/
gegl_node_link_many (image_map->input,
image_map->shift,
image_map->operation,
image_map->output,
NULL);
}
else if (gegl_node_get_pad (image_map->operation, "output"))
{
/* if there is only an output pad we probably have a
* source OP, blend its result on top of the original
* pixels.
*/
GeglNode *over = gegl_node_new_child (image_map->gegl,
"operation", "over",
NULL);
gegl_node_link_many (image_map->input,
image_map->shift,
over,
image_map->output,
NULL);
gegl_node_connect_to (image_map->operation, "output",
over, "aux");
}
else
{
/* otherwise we just construct a silly nop pipleline
*/
gegl_node_link_many (image_map->input,
image_map->shift,
image_map->output,
NULL);
}
}
gegl_node_set (image_map->input,
"tile-manager", image_map->undo_tiles,
"linear", TRUE,
NULL);
gegl_node_set (image_map->shift,
"x", (gdouble) rect.x,
"y", (gdouble) rect.y,
NULL);
gegl_node_set (image_map->output,
"tile-manager", gimp_drawable_get_shadow_tiles (image_map->drawable),
"linear", TRUE,
NULL);
image_map->processor = gegl_node_new_processor (image_map->output,
&rect);
}
else
{
/* Configure the src from the drawable data */
pixel_region_init (&image_map->srcPR,
image_map->undo_tiles,
0, 0,
rect.width, rect.height,
FALSE);
/* Configure the dest as the shadow buffer */
pixel_region_init (&image_map->destPR,
gimp_drawable_get_shadow_tiles (image_map->drawable),
rect.x, rect.y,
rect.width, rect.height,
TRUE);
/* Apply the image transformation to the pixels */
image_map->PRI = pixel_regions_register (2,
&image_map->srcPR,
&image_map->destPR);
}
/* Start the intermittant work procedure */
image_map->idle_id = g_idle_add ((GSourceFunc) gimp_image_map_do, image_map);
}
void
gimp_image_map_commit (GimpImageMap *image_map)
{
gint x1, y1, x2, y2;
g_return_if_fail (GIMP_IS_IMAGE_MAP (image_map));
if (image_map->idle_id)
{
g_source_remove (image_map->idle_id);
image_map->idle_id = 0;
/* Finish the changes */
while (gimp_image_map_do (image_map));
}
/* Make sure the drawable is still valid */
if (! gimp_item_is_attached (GIMP_ITEM (image_map->drawable)))
return;
/* Register an undo step */
if (image_map->undo_tiles)
{
x1 = image_map->undo_offset_x;
y1 = image_map->undo_offset_y;
x2 = x1 + tile_manager_width (image_map->undo_tiles);
y2 = y1 + tile_manager_height (image_map->undo_tiles);
gimp_drawable_push_undo (image_map->drawable,
image_map->undo_desc,
x1, y1, x2, y2,
image_map->undo_tiles, FALSE);
tile_manager_unref (image_map->undo_tiles);
image_map->undo_tiles = NULL;
}
}
void
gimp_image_map_clear (GimpImageMap *image_map)
{
g_return_if_fail (GIMP_IS_IMAGE_MAP (image_map));
if (image_map->idle_id)
{
g_source_remove (image_map->idle_id);
image_map->idle_id = 0;
if (image_map->processor)
{
g_object_unref (image_map->processor);
image_map->processor = NULL;
}
if (image_map->PRI)
{
pixel_regions_process_stop (image_map->PRI);
image_map->PRI = NULL;
}
}
/* Make sure the drawable is still valid */
if (! gimp_item_is_attached (GIMP_ITEM (image_map->drawable)))
return;
/* restore the original image */
if (image_map->undo_tiles)
{
PixelRegion srcPR;
PixelRegion destPR;
gint x = image_map->undo_offset_x;
gint y = image_map->undo_offset_y;
gint width = tile_manager_width (image_map->undo_tiles);
gint height = tile_manager_height (image_map->undo_tiles);
/* Copy from the drawable to the tiles */
pixel_region_init (&srcPR, image_map->undo_tiles,
0, 0, width, height,
FALSE);
pixel_region_init (&destPR, gimp_drawable_get_tiles (image_map->drawable),
x, y, width, 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");
}
else
{
copy_region (&srcPR, &destPR);
gimp_drawable_update (image_map->drawable, x, y, width, height);
}
/* Free the undo_tiles tile manager */
tile_manager_unref (image_map->undo_tiles);
image_map->undo_tiles = NULL;
}
}
void
gimp_image_map_abort (GimpImageMap *image_map)
{
g_return_if_fail (GIMP_IS_IMAGE_MAP (image_map));
if (image_map->idle_id)
{
g_source_remove (image_map->idle_id);
image_map->idle_id = 0;
if (image_map->processor)
{
g_object_unref (image_map->processor);
image_map->processor = NULL;
}
if (image_map->PRI)
{
pixel_regions_process_stop (image_map->PRI);
image_map->PRI = NULL;
}
}
if (! gimp_item_is_attached (GIMP_ITEM (image_map->drawable)))
return;
gimp_image_map_clear (image_map);
}
/* private functions */
static gboolean
gimp_image_map_do (GimpImageMap *image_map)
{
GimpImage *image;
if (! gimp_item_is_attached (GIMP_ITEM (image_map->drawable)))
{
image_map->idle_id = 0;
if (image_map->processor)
{
g_object_unref (image_map->processor);
image_map->processor = NULL;
}
if (image_map->PRI)
{
pixel_regions_process_stop (image_map->PRI);
image_map->PRI = NULL;
}
return FALSE;
}
image = gimp_item_get_image (GIMP_ITEM (image_map->drawable));
if (image_map->gegl)
{
if (! gegl_processor_work (image_map->processor, NULL))
{
g_object_unref (image_map->processor);
image_map->processor = NULL;
image_map->idle_id = 0;
g_signal_emit (image_map, image_map_signals[FLUSH], 0);
return FALSE;
}
}
else
{
gint i;
/* Process up to 16 tiles in one go. This reduces the overhead
* caused by updating the display while the imagemap is being
* applied and gives us a tiny speedup.
*/
for (i = 0; i < 16; i++)
{
PixelRegion srcPR;
PixelRegion destPR;
gint x, y, w, h;
x = image_map->destPR.x;
y = image_map->destPR.y;
w = image_map->destPR.w;
h = image_map->destPR.h;
/* Reset to initial drawable conditions. */
pixel_region_init (&srcPR, image_map->undo_tiles,
x - image_map->undo_offset_x,
y - image_map->undo_offset_y,
w, h, FALSE);
pixel_region_init (&destPR,
gimp_drawable_get_tiles (image_map->drawable),
x, y, w, h, TRUE);
copy_region (&srcPR, &destPR);
image_map->apply_func (image_map->apply_data,
&image_map->srcPR,
&image_map->destPR);
pixel_region_init (&srcPR, image->shadow, x, y, w, h, FALSE);
gimp_drawable_apply_region (image_map->drawable, &srcPR,
FALSE, NULL,
GIMP_OPACITY_OPAQUE, GIMP_REPLACE_MODE,
NULL,
x, y);
gimp_drawable_update (image_map->drawable, x, y, w, h);
image_map->PRI = pixel_regions_process (image_map->PRI);
if (image_map->PRI == NULL)
{
image_map->idle_id = 0;
g_signal_emit (image_map, image_map_signals[FLUSH], 0);
return FALSE;
}
}
}
g_signal_emit (image_map, image_map_signals[FLUSH], 0);
return TRUE;
}
static void
gimp_image_map_data_written (GObject *operation,
const GeglRectangle *extent,
GimpImageMap *image_map)
{
GimpImage *image;
PixelRegion srcPR;
PixelRegion destPR;
#if 0
g_print ("%s: rect = { %d, %d, %d, %d }\n",
G_STRFUNC, extent->x, extent->y, extent->width, extent->height);
#endif
image = gimp_item_get_image (GIMP_ITEM (image_map->drawable));
/* Reset to initial drawable conditions. */
pixel_region_init (&srcPR, image_map->undo_tiles,
extent->x - image_map->undo_offset_x,
extent->y - image_map->undo_offset_y,
extent->width,
extent->height,
FALSE);
pixel_region_init (&destPR, gimp_drawable_get_tiles (image_map->drawable),
extent->x,
extent->y,
extent->width,
extent->height,
TRUE);
copy_region (&srcPR, &destPR);
/* Apply the result of the gegl graph. */
pixel_region_init (&srcPR, image->shadow,
extent->x,
extent->y,
extent->width,
extent->height,
FALSE);
gimp_drawable_apply_region (image_map->drawable, &srcPR,
FALSE, NULL,
GIMP_OPACITY_OPAQUE, GIMP_REPLACE_MODE,
NULL,
extent->x, extent->y);
gimp_drawable_update (image_map->drawable,
extent->x, extent->y,
extent->width, extent->height);
}
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