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gimp/app/core/gimp-edit.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/temp-buf.h"
#include "base/tile-manager.h"
#include "base/tile-manager-crop.h"
#include "paint-funcs/paint-funcs.h"
#include "gimp.h"
#include "gimp-edit.h"
#include "gimp-utils.h"
#include "gimpbuffer.h"
#include "gimpchannel.h"
#include "gimpcontext.h"
#include "gimpimage.h"
#include "gimpimage-undo.h"
#include "gimplayer.h"
#include "gimplayer-floating-sel.h"
#include "gimplist.h"
#include "gimppattern.h"
#include "gimpprojection.h"
#include "gimpselection.h"
#include "gimp-intl.h"
/* local function protypes */
static const GimpBuffer * gimp_edit_extract (GimpImage *gimage,
GimpDrawable *drawable,
GimpContext *context,
gboolean cut_pixels);
static const GimpBuffer * gimp_edit_set_buffer (Gimp *gimp,
TileManager *tiles,
gboolean mask_empty);
static gboolean gimp_edit_fill_internal (GimpImage *gimage,
GimpDrawable *drawable,
GimpContext *context,
GimpFillType fill_type,
const gchar *undo_desc);
/* public functions */
const GimpBuffer *
gimp_edit_cut (GimpImage *gimage,
GimpDrawable *drawable,
GimpContext *context)
{
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), NULL);
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 (GIMP_IS_CONTEXT (context), NULL);
return gimp_edit_extract (gimage, drawable, context, TRUE);
}
const GimpBuffer *
gimp_edit_copy (GimpImage *gimage,
GimpDrawable *drawable,
GimpContext *context)
{
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), NULL);
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 (GIMP_IS_CONTEXT (context), NULL);
return gimp_edit_extract (gimage, drawable, context, FALSE);
}
const GimpBuffer *
gimp_edit_copy_visible (GimpImage *gimage,
GimpContext *context)
{
PixelRegion srcPR, destPR;
TileManager *tiles;
gboolean non_empty;
gint x1, y1, x2, y2;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), NULL);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
non_empty = gimp_channel_bounds (gimp_image_get_mask (gimage),
&x1, &y1, &x2, &y2);
if ((x1 == x2) || (y1 == y2))
{
g_message (_("Unable to cut or copy because the "
"selected region is empty."));
return NULL;
}
tiles = tile_manager_new (x2 - x1, y2 - y1,
gimp_projection_get_bytes (gimage->projection));
tile_manager_set_offsets (tiles, x1, y1);
pixel_region_init (&srcPR, gimp_projection_get_tiles (gimage->projection),
x1, y1,
x2 - x1, y2 - y1,
FALSE);
pixel_region_init (&destPR, tiles,
0, 0,
x2 - x1, y2 - y1,
TRUE);
/* use EEKy no-COW copying because sharing tiles with the projection
* is buggy as hell, probably because tile_invalidate() doesn't
* do what it should --mitch
*/
copy_region_nocow (&srcPR, &destPR);
return gimp_edit_set_buffer (gimage->gimp, tiles, ! non_empty);
}
GimpLayer *
gimp_edit_paste (GimpImage *gimage,
GimpDrawable *drawable,
GimpBuffer *paste,
gboolean paste_into,
gint viewport_x,
gint viewport_y,
gint viewport_width,
gint viewport_height)
{
GimpLayer *layer;
GimpImageType type;
gint center_x;
gint center_y;
gint offset_x;
gint offset_y;
gint width;
gint height;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), NULL);
g_return_val_if_fail (drawable == NULL || GIMP_IS_DRAWABLE (drawable), NULL);
g_return_val_if_fail (drawable == NULL ||
gimp_item_is_attached (GIMP_ITEM (drawable)), NULL);
g_return_val_if_fail (GIMP_IS_BUFFER (paste), NULL);
/* Make a new layer: if drawable == NULL,
* user is pasting into an empty image.
*/
if (drawable)
type = gimp_drawable_type_with_alpha (drawable);
else
type = gimp_image_base_type_with_alpha (gimage);
layer = gimp_layer_new_from_tiles (paste->tiles,
gimage,
type,
_("Pasted Layer"),
GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);
if (! layer)
return NULL;
if (drawable)
{
/* if pasting to a drawable */
gint off_x, off_y;
gint x1, y1, x2, y2;
gint paste_x, paste_y;
gint paste_width, paste_height;
gboolean have_mask;
gimp_item_offsets (GIMP_ITEM (drawable), &off_x, &off_y);
have_mask = gimp_drawable_mask_bounds (drawable, &x1, &y1, &x2, &y2);
if (! have_mask &&
viewport_width > 0 &&
viewport_height > 0 &&
gimp_rectangle_intersect (viewport_x, viewport_y,
viewport_width, viewport_height,
off_x, off_y,
x2 - x1, y2 - y1,
&paste_x, &paste_y,
&paste_width, &paste_height))
{
center_x = paste_x + paste_width / 2;
center_y = paste_y + paste_height / 2;
}
else
{
center_x = off_x + (x1 + x2) / 2;
center_y = off_y + (y1 + y2) / 2;
}
}
else if (viewport_width > 0 && viewport_height > 0)
{
/* if we got a viewport set the offsets to the center of the viewport */
center_x = viewport_x + viewport_width / 2;
center_y = viewport_y + viewport_height / 2;
}
else
{
/* otherwise the offsets to the center of the image */
center_x = gimage->width / 2;
center_y = gimage->height / 2;
}
width = gimp_item_width (GIMP_ITEM (layer));
height = gimp_item_height (GIMP_ITEM (layer));
offset_x = center_x - width / 2;
offset_y = center_y - height / 2;
/* Ensure that the pasted layer is always within the image, if it
* fits and aligned at top left if it doesn't. (See bug #142944).
*/
offset_x = MIN (offset_x, gimage->width - width);
offset_y = MIN (offset_y, gimage->height - height);
offset_x = MAX (offset_x, 0);
offset_y = MAX (offset_y, 0);
GIMP_ITEM (layer)->offset_x = offset_x;
GIMP_ITEM (layer)->offset_y = offset_y;
/* Start a group undo */
gimp_image_undo_group_start (gimage, GIMP_UNDO_GROUP_EDIT_PASTE,
_("Paste"));
/* 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_channel_is_empty (gimp_image_get_mask (gimage)) && ! paste_into)
gimp_channel_clear (gimp_image_get_mask (gimage), NULL, TRUE);
/* if there's a drawable, add a new floating selection */
if (drawable)
floating_sel_attach (layer, drawable);
else
gimp_image_add_layer (gimage, layer, 0);
/* end the group undo */
gimp_image_undo_group_end (gimage);
return layer;
}
GimpImage *
gimp_edit_paste_as_new (Gimp *gimp,
GimpImage *invoke,
GimpBuffer *paste)
{
GimpImage *gimage;
GimpLayer *layer;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (invoke == NULL || GIMP_IS_IMAGE (invoke), NULL);
g_return_val_if_fail (GIMP_IS_BUFFER (paste), NULL);
/* create a new image (always of type GIMP_RGB) */
gimage = gimp_create_image (gimp,
gimp_buffer_get_width (paste),
gimp_buffer_get_height (paste),
GIMP_RGB,
TRUE);
gimp_image_undo_disable (gimage);
if (invoke)
{
gimp_image_set_resolution (gimage,
invoke->xresolution, invoke->yresolution);
gimp_image_set_unit (gimage,
gimp_image_get_unit (invoke));
}
layer = gimp_layer_new_from_tiles (paste->tiles,
gimage,
gimp_image_base_type_with_alpha (gimage),
_("Pasted Layer"),
GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);
if (! layer)
{
g_object_unref (gimage);
return NULL;
}
gimp_image_add_layer (gimage, layer, 0);
gimp_image_undo_enable (gimage);
gimp_create_display (gimp, gimage, GIMP_UNIT_PIXEL, 1.0);
g_object_unref (gimage);
return gimage;
}
gboolean
gimp_edit_clear (GimpImage *gimage,
GimpDrawable *drawable,
GimpContext *context)
{
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), FALSE);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), FALSE);
return gimp_edit_fill_internal (gimage, drawable, context,
GIMP_TRANSPARENT_FILL,
_("Clear"));
}
gboolean
gimp_edit_fill (GimpImage *gimage,
GimpDrawable *drawable,
GimpContext *context,
GimpFillType fill_type)
{
const gchar *undo_desc;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), FALSE);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), FALSE);
switch (fill_type)
{
case GIMP_FOREGROUND_FILL:
undo_desc = _("Fill with FG Color");
break;
case GIMP_BACKGROUND_FILL:
undo_desc = _("Fill with BG Color");
break;
case GIMP_WHITE_FILL:
undo_desc = _("Fill with White");
break;
case GIMP_TRANSPARENT_FILL:
undo_desc = _("Fill with Transparency");
break;
case GIMP_PATTERN_FILL:
undo_desc = _("Fill with Pattern");
break;
case GIMP_NO_FILL:
return TRUE; /* nothing to do, but the fill succeded */
default:
g_warning ("%s: unknown fill type", G_STRFUNC);
fill_type = GIMP_BACKGROUND_FILL;
undo_desc = _("Fill with BG Color");
break;
}
return gimp_edit_fill_internal (gimage, drawable, context,
fill_type, undo_desc);
}
/* private functions */
const GimpBuffer *
gimp_edit_extract (GimpImage *gimage,
GimpDrawable *drawable,
GimpContext *context,
gboolean cut_pixels)
{
TileManager *tiles;
gboolean empty;
/* See if the gimage mask is empty */
empty = gimp_channel_is_empty (gimp_image_get_mask (gimage));
if (cut_pixels)
gimp_image_undo_group_start (gimage, GIMP_UNDO_GROUP_EDIT_CUT, _("Cut"));
/* Cut/copy the mask portion from the gimage */
tiles = gimp_selection_extract (gimp_image_get_mask (gimage),
drawable, context, cut_pixels, FALSE, TRUE);
if (cut_pixels)
gimp_image_undo_group_end (gimage);
return gimp_edit_set_buffer (gimage->gimp, tiles, empty);
}
static const GimpBuffer *
gimp_edit_set_buffer (Gimp *gimp,
TileManager *tiles,
gboolean mask_empty)
{
/* Only crop if the gimage mask wasn't empty */
if (tiles && ! mask_empty)
{
TileManager *crop = tile_manager_crop (tiles, 0);
if (crop != tiles)
{
tile_manager_unref (tiles);
tiles = crop;
}
}
if (tiles)
{
GimpBuffer *buffer = gimp_buffer_new (tiles, "Global Buffer", FALSE);
gimp_set_global_buffer (gimp, buffer);
g_object_unref (buffer);
return gimp->global_buffer;
}
return NULL;
}
static gboolean
gimp_edit_fill_internal (GimpImage *gimage,
GimpDrawable *drawable,
GimpContext *context,
GimpFillType fill_type,
const gchar *undo_desc)
{
TileManager *buf_tiles;
PixelRegion bufPR;
gint x, y, width, height;
gint tiles_bytes;
guchar col[MAX_CHANNELS];
TempBuf *pat_buf = NULL;
gboolean new_buf;
if (! gimp_drawable_mask_intersect (drawable, &x, &y, &width, &height))
return TRUE; /* nothing to do, but the fill succeded */
tiles_bytes = gimp_drawable_bytes (drawable);
switch (fill_type)
{
case GIMP_FOREGROUND_FILL:
gimp_image_get_foreground (gimage, drawable, context, col);
break;
case GIMP_BACKGROUND_FILL:
case GIMP_TRANSPARENT_FILL:
gimp_image_get_background (gimage, drawable, context, col);
break;
case GIMP_WHITE_FILL:
{
guchar tmp_col[MAX_CHANNELS];
tmp_col[RED_PIX] = 255;
tmp_col[GREEN_PIX] = 255;
tmp_col[BLUE_PIX] = 255;
gimp_image_transform_color (gimage, drawable, col, GIMP_RGB, tmp_col);
}
break;
case GIMP_PATTERN_FILL:
{
GimpPattern *pattern = gimp_context_get_pattern (context);
pat_buf = gimp_image_transform_temp_buf (gimage, drawable,
pattern->mask, &new_buf);
if (! gimp_drawable_has_alpha (drawable) &&
(pat_buf->bytes == 2 || pat_buf->bytes == 4))
tiles_bytes++;
}
break;
case GIMP_NO_FILL:
return TRUE; /* nothing to do, but the fill succeded */
}
buf_tiles = tile_manager_new (width, height, tiles_bytes);
pixel_region_init (&bufPR, buf_tiles, 0, 0, width, height, TRUE);
if (pat_buf)
{
pattern_region (&bufPR, NULL, pat_buf, 0, 0);
if (new_buf)
temp_buf_free (pat_buf);
}
else
{
if (gimp_drawable_has_alpha (drawable))
col[gimp_drawable_bytes (drawable) - 1] = OPAQUE_OPACITY;
color_region (&bufPR, col);
}
pixel_region_init (&bufPR, buf_tiles, 0, 0, width, height, FALSE);
gimp_drawable_apply_region (drawable, &bufPR,
TRUE, undo_desc,
GIMP_OPACITY_OPAQUE,
(fill_type == GIMP_TRANSPARENT_FILL) ?
GIMP_ERASE_MODE : GIMP_NORMAL_MODE,
NULL, x, y);
tile_manager_unref (buf_tiles);
gimp_drawable_update (drawable, x, y, width, height);
return TRUE;
}
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