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gimp/app/core/gimpedit.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 <stdlib.h>
#include <glib-object.h>
#include "core-types.h"
#include "base/pixel-region.h"
#include "base/tile-manager.h"
#include "base/tile-manager-crop.h"
#include "paint-funcs/paint-funcs.h"
#include "gimp.h"
#include "gimpbuffer.h"
#include "gimpchannel.h"
#include "gimpcontext.h"
#include "gimpedit.h"
#include "gimpimage.h"
#include "gimpimage-mask.h"
#include "gimpimage-new.h"
#include "gimplayer.h"
#include "gimplist.h"
#include "floating_sel.h"
#include "undo.h"
#include "libgimp/gimpintl.h"
TileManager *
gimp_edit_cut (GimpImage *gimage,
GimpDrawable *drawable)
{
TileManager *cut;
TileManager *cropped_cut;
gboolean empty;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), NULL);
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
/* Start a group undo */
undo_push_group_start (gimage, EDIT_CUT_UNDO);
/* See if the gimage mask is empty */
empty = gimp_image_mask_is_empty (gimage);
/* Next, cut the mask portion from the gimage */
cut = gimp_image_mask_extract (gimage, drawable, TRUE, FALSE, TRUE);
if (cut)
gimp_image_new_set_have_current_cut_buffer (gimage->gimp);
/* Only crop if the gimage mask wasn't empty */
if (cut && ! empty)
{
cropped_cut = tile_manager_crop (cut, 0);
if (cropped_cut != cut)
{
tile_manager_destroy (cut);
cut = NULL;
}
}
else if (cut)
cropped_cut = cut;
else
cropped_cut = NULL;
/* end the group undo */
undo_push_group_end (gimage);
if (cropped_cut)
{
/* Free the old global edit buffer */
if (gimage->gimp->global_buffer)
tile_manager_destroy (gimage->gimp->global_buffer);
/* Set the global edit buffer */
gimage->gimp->global_buffer = cropped_cut;
}
return cropped_cut;
}
TileManager *
gimp_edit_copy (GimpImage *gimage,
GimpDrawable *drawable)
{
TileManager *copy;
TileManager *cropped_copy;
gboolean empty;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), NULL);
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
/* See if the gimage mask is empty */
empty = gimp_image_mask_is_empty (gimage);
/* First, copy the masked portion of the gimage */
copy = gimp_image_mask_extract (gimage, drawable, FALSE, FALSE, TRUE);
if (copy)
gimp_image_new_set_have_current_cut_buffer (gimage->gimp);
/* Only crop if the gimage mask wasn't empty */
if (copy && ! empty)
{
cropped_copy = tile_manager_crop (copy, 0);
if (cropped_copy != copy)
{
tile_manager_destroy (copy);
copy = NULL;
}
}
else if (copy)
cropped_copy = copy;
else
cropped_copy = NULL;
if (cropped_copy)
{
/* Free the old global edit buffer */
if (gimage->gimp->global_buffer)
tile_manager_destroy (gimage->gimp->global_buffer);
/* Set the global edit buffer */
gimage->gimp->global_buffer = cropped_copy;
}
return cropped_copy;
}
GimpLayer *
gimp_edit_paste (GimpImage *gimage,
GimpDrawable *drawable,
TileManager *paste,
gboolean paste_into)
{
GimpLayer *layer;
gint x1, y1, x2, y2;
gint cx, cy;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), NULL);
g_return_val_if_fail (! drawable || GIMP_IS_DRAWABLE (drawable), NULL);
/* Make a new layer: if drawable == NULL,
* user is pasting into an empty image.
*/
if (drawable != NULL)
layer = gimp_layer_new_from_tiles (gimage,
gimp_drawable_type_with_alpha (drawable),
paste,
_("Pasted Layer"),
OPAQUE_OPACITY, GIMP_NORMAL_MODE);
else
layer = gimp_layer_new_from_tiles (gimage,
gimp_image_base_type_with_alpha (gimage),
paste,
_("Pasted Layer"),
OPAQUE_OPACITY, GIMP_NORMAL_MODE);
if (! layer)
return NULL;
/* Start a group undo */
undo_push_group_start (gimage, EDIT_PASTE_UNDO);
/* Set the offsets to the center of the image */
if (drawable != NULL)
{
gimp_drawable_offsets (drawable, &cx, &cy);
gimp_drawable_mask_bounds (drawable, &x1, &y1, &x2, &y2);
cx += (x1 + x2) >> 1;
cy += (y1 + y2) >> 1;
}
else
{
cx = gimage->width >> 1;
cy = gimage->height >> 1;
}
GIMP_DRAWABLE (layer)->offset_x = cx - (GIMP_DRAWABLE (layer)->width >> 1);
GIMP_DRAWABLE (layer)->offset_y = cy - (GIMP_DRAWABLE (layer)->height >> 1);
/* If there is a selection mask clear it--
* this might not always be desired, but in general,
* it seems like the correct behavior.
*/
if (! gimp_image_mask_is_empty (gimage) && ! paste_into)
gimp_channel_clear (gimp_image_get_mask (gimage));
/* if there's a drawable, add a new floating selection */
if (drawable != NULL)
{
floating_sel_attach (layer, drawable);
}
else
{
gimp_drawable_set_gimage (GIMP_DRAWABLE (layer), gimage);
gimp_image_add_layer (gimage, layer, 0);
}
/* end the group undo */
undo_push_group_end (gimage);
return layer;
}
GimpImage *
gimp_edit_paste_as_new (Gimp *gimp,
GimpImage *invoke,
TileManager *paste)
{
GimpImage *gimage;
GimpLayer *layer;
/* create a new image (always of type RGB) */
gimage = gimp_create_image (gimp,
tile_manager_width (paste),
tile_manager_height (paste),
RGB,
TRUE);
gimp_image_undo_disable (gimage);
if (invoke)
{
gimp_image_set_resolution (gimage,
invoke->xresolution, invoke->yresolution);
gimp_image_set_unit (gimage, invoke->unit);
}
layer = gimp_layer_new_from_tiles (gimage,
gimp_image_base_type_with_alpha (gimage),
paste,
_("Pasted Layer"),
OPAQUE_OPACITY, GIMP_NORMAL_MODE);
if (layer)
{
/* add the new layer to the image */
gimp_drawable_set_gimage (GIMP_DRAWABLE (layer), gimage);
gimp_image_add_layer (gimage, layer, 0);
gimp_image_undo_enable (gimage);
gimp_create_display (gimp, gimage, 0x0101);
g_object_unref (G_OBJECT (gimage));
return gimage;
}
return NULL;
}
gboolean
gimp_edit_clear (GimpImage *gimage,
GimpDrawable *drawable)
{
TileManager *buf_tiles;
PixelRegion bufPR;
gint x1, y1, x2, y2;
guchar col[MAX_CHANNELS];
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
gimp_image_get_background (gimage, drawable, col);
if (gimp_drawable_has_alpha (drawable))
col [gimp_drawable_bytes (drawable) - 1] = OPAQUE_OPACITY;
gimp_drawable_mask_bounds (drawable, &x1, &y1, &x2, &y2);
if (!(x2 - x1) || !(y2 - y1))
return TRUE; /* nothing to do, but the clear succeded */
buf_tiles = tile_manager_new ((x2 - x1), (y2 - y1),
gimp_drawable_bytes (drawable));
pixel_region_init (&bufPR, buf_tiles, 0, 0, (x2 - x1), (y2 - y1), TRUE);
color_region (&bufPR, col);
pixel_region_init (&bufPR, buf_tiles, 0, 0, (x2 - x1), (y2 - y1), FALSE);
gimp_image_apply_image (gimage, drawable, &bufPR, TRUE, OPAQUE_OPACITY,
GIMP_ERASE_MODE, NULL, x1, y1);
/* update the image */
gimp_drawable_update (drawable,
x1, y1,
(x2 - x1), (y2 - y1));
/* free the temporary tiles */
tile_manager_destroy (buf_tiles);
return TRUE;
}
gboolean
gimp_edit_fill (GimpImage *gimage,
GimpDrawable *drawable,
GimpFillType fill_type)
{
TileManager *buf_tiles;
PixelRegion bufPR;
gint x1, y1, x2, y2;
guchar col[MAX_CHANNELS];
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
if (gimp_drawable_has_alpha (drawable))
col [gimp_drawable_bytes (drawable) - 1] = OPAQUE_OPACITY;
switch (fill_type)
{
case FOREGROUND_FILL:
gimp_image_get_foreground (gimage, drawable, col);
break;
case BACKGROUND_FILL:
gimp_image_get_background (gimage, drawable, col);
break;
case WHITE_FILL:
col[RED_PIX] = 255;
col[GREEN_PIX] = 255;
col[BLUE_PIX] = 255;
break;
case TRANSPARENT_FILL:
col[RED_PIX] = 0;
col[GREEN_PIX] = 0;
col[BLUE_PIX] = 0;
if (gimp_drawable_has_alpha (drawable))
col [gimp_drawable_bytes (drawable) - 1] = TRANSPARENT_OPACITY;
break;
case NO_FILL:
return TRUE; /* nothing to do, but the fill succeded */
default:
g_warning ("%s: unknown fill type", G_GNUC_PRETTY_FUNCTION);
gimp_image_get_background (gimage, drawable, col);
break;
}
gimp_drawable_mask_bounds (drawable, &x1, &y1, &x2, &y2);
if (!(x2 - x1) || !(y2 - y1))
return TRUE; /* nothing to do, but the fill succeded */
buf_tiles = tile_manager_new ((x2 - x1), (y2 - y1),
gimp_drawable_bytes (drawable));
pixel_region_init (&bufPR, buf_tiles, 0, 0, (x2 - x1), (y2 - y1), TRUE);
color_region (&bufPR, col);
pixel_region_init (&bufPR, buf_tiles, 0, 0, (x2 - x1), (y2 - y1), FALSE);
gimp_image_apply_image (gimage, drawable, &bufPR, TRUE, OPAQUE_OPACITY,
GIMP_NORMAL_MODE, NULL, x1, y1);
/* update the image */
gimp_drawable_update (drawable,
x1, y1,
(x2 - x1), (y2 - y1));
/* free the temporary tiles */
tile_manager_destroy (buf_tiles);
return TRUE;
}
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