dallasgroot/Gimp
dallasgroot/Gimp
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
Gimp/app/core/gimpselection.c
Michael Natterer e09e563a70 Initial space invasion commit in GIMP 
All babl formats now have a space equivalent to a color profile,
determining the format's primaries and TRCs. This commit makes GIMP
aware of this.

libgimp:

- enum GimpPrecision: rename GAMMA values to NON_LINEAR and keep GAMMA
  as deprecated aliases, add PERCEPTUAL values so we now have LINEAR,
  NON_LINEAR and PERCPTUAL for each encoding, matching the babl
  encoding variants RGB, R'G'B' and R~G~B~.

- gimp_color_transform_can_gegl_copy() now returns TRUE if both
  profiles can return a babl space, increasing the amount of fast babl
  color conversions significantly.

- TODO: no solution yet for getting libgimp drawable proxy buffers in
  the right format with space.

plug-ins:

- follow the GimpPrecision change.

- TODO: everything else unchanged and partly broken or sub-optimal,
  like setting a new image's color profile too late.

app:

- add enum GimpTRCType { LINEAR, NON_LINEAR, PERCEPTUAL } as
  replacement for all "linear" booleans.

- change gimp-babl functions to take babl spaces and GimpTRCType
  parameters and support all sorts of new perceptual ~ formats.

- a lot of places changed in the early days of goat invasion didn't
  take advantage of gimp-babl utility functions and constructed
  formats manually. They all needed revisiting and many now use much
  simpler code calling gimp-babl API.

- change gimp_babl_format_get_color_profile() to really extract a
  newly allocated color profile from the format, and add
  gimp_babl_get_builtin_color_profile() which does the same as
  gimp_babl_format_get_color_profile() did before. Visited all callers
  to decide whether they are looking for the format's actual profile,
  or for one of the builtin profiles, simplifying code that only needs
  builtin profiles.

- drawables have a new get_space_api(), get_linear() is now get_trc().

- images now have a "layer space" and an API to get it,
  gimp_image_get_layer_format() returns formats in that space.

- an image's layer space is created from the image's color profile,
  change gimpimage-color-profile to deal with that correctly

- change many babl_format() calls to babl_format_with_space() and take
  the space from passed formats or drawables

- add function gimp_layer_fix_format_space() which replaces the
  layer's buffer with one that has the image's layer format, but
  doesn't change pixel values

- use gimp_layer_fix_format_space() to make sure layers loaded from
  XCF and created by plug-ins have the right space when added to the
  image, because it's impossible to always assign the right space upon
  layer creation

- "assign color profile" and "discard color profile" now require use
  of gimp_layer_fix_format_space() too because the profile is now
  embedded in all formats via the space.  Add
  gimp_image_assign_color_profile() which does all that and call it
  instead of a simple gimp_image_set_color_profile(), also from the
  PDB set-color-profile functions, which are essentially "assign" and
  "discard" calls.

- generally, make sure a new image's color profile is set before
  adding layers to it, gimp_image_set_color_profile() is more than
  before considered know-what-you-are-doing API.

- take special precaution in all places that call
  gimp_drawable_convert_type(), we now must pass a new_profile from
  all callers that convert layers within the same image (such as
  image_convert_type, image_convert_precision), because the layer's
  new space can't be determined from the image's layer format during
  the call.

- change all "linear" properties to "trc", in all config objects like
  for levels and curves, in the histogram, in the widgets. This results
  in some GUI that now has three choices instead of two.
  TODO: we might want to reduce that back to two later.

- keep "linear" boolean properties around as compat if needed for file
  pasring, but always convert the parsed parsed boolean to
  GimpTRCType.

- TODO: the image's "enable color management" switch is currently
  broken, will fix that in another commit.
2018-07-21 16:42:57 +02:00

862 lines
34 KiB
C
Raw Blame History

/* 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 3 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, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <cairo.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gegl.h>
#include "libgimpcolor/gimpcolor.h"
#include "core-types.h"
#include "gegl/gimp-babl.h"
#include "gegl/gimp-gegl-apply-operation.h"
#include "gegl/gimp-gegl-loops.h"
#include "gimp.h"
#include "gimpcontext.h"
#include "gimpdrawable-edit.h"
#include "gimpdrawable-private.h"
#include "gimperror.h"
#include "gimpimage.h"
#include "gimpimage-undo.h"
#include "gimpimage-undo-push.h"
#include "gimplayer.h"
#include "gimplayer-new.h"
#include "gimplayermask.h"
#include "gimplayer-floating-selection.h"
#include "gimppickable.h"
#include "gimpselection.h"
#include "gimp-intl.h"
static gboolean gimp_selection_is_attached (GimpItem *item);
static GimpItemTree * gimp_selection_get_tree (GimpItem *item);
static void gimp_selection_translate (GimpItem *item,
gdouble offset_x,
gdouble offset_y,
gboolean push_undo);
static void gimp_selection_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_selection_resize (GimpItem *item,
GimpContext *context,
GimpFillType fill_type,
gint new_width,
gint new_height,
gint offset_x,
gint offset_y);
static void gimp_selection_flip (GimpItem *item,
GimpContext *context,
GimpOrientationType flip_type,
gdouble axis,
gboolean clip_result);
static void gimp_selection_rotate (GimpItem *item,
GimpContext *context,
GimpRotationType rotation_type,
gdouble center_x,
gdouble center_y,
gboolean clip_result);
static gboolean gimp_selection_fill (GimpItem *item,
GimpDrawable *drawable,
GimpFillOptions *fill_options,
gboolean push_undo,
GimpProgress *progress,
GError **error);
static gboolean gimp_selection_stroke (GimpItem *item,
GimpDrawable *drawable,
GimpStrokeOptions *stroke_options,
gboolean push_undo,
GimpProgress *progress,
GError **error);
static void gimp_selection_convert_type (GimpDrawable *drawable,
GimpImage *dest_image,
const Babl *new_format,
GimpColorProfile *dest_profile,
GeglDitherMethod layer_dither_type,
GeglDitherMethod mask_dither_type,
gboolean push_undo,
GimpProgress *progress);
static void gimp_selection_invalidate_boundary (GimpDrawable *drawable);
static gboolean gimp_selection_boundary (GimpChannel *channel,
const GimpBoundSeg **segs_in,
const GimpBoundSeg **segs_out,
gint *num_segs_in,
gint *num_segs_out,
gint x1,
gint y1,
gint x2,
gint y2);
static gboolean gimp_selection_is_empty (GimpChannel *channel);
static void gimp_selection_feather (GimpChannel *channel,
gdouble radius_x,
gdouble radius_y,
gboolean push_undo);
static void gimp_selection_sharpen (GimpChannel *channel,
gboolean push_undo);
static void gimp_selection_clear (GimpChannel *channel,
const gchar *undo_desc,
gboolean push_undo);
static void gimp_selection_all (GimpChannel *channel,
gboolean push_undo);
static void gimp_selection_invert (GimpChannel *channel,
gboolean push_undo);
static void gimp_selection_border (GimpChannel *channel,
gint radius_x,
gint radius_y,
GimpChannelBorderStyle style,
gboolean edge_lock,
gboolean push_undo);
static void gimp_selection_grow (GimpChannel *channel,
gint radius_x,
gint radius_y,
gboolean push_undo);
static void gimp_selection_shrink (GimpChannel *channel,
gint radius_x,
gint radius_y,
gboolean edge_lock,
gboolean push_undo);
static void gimp_selection_flood (GimpChannel *channel,
gboolean push_undo);
G_DEFINE_TYPE (GimpSelection, gimp_selection, GIMP_TYPE_CHANNEL)
#define parent_class gimp_selection_parent_class
static void
gimp_selection_class_init (GimpSelectionClass *klass)
{
GimpViewableClass *viewable_class = GIMP_VIEWABLE_CLASS (klass);
GimpItemClass *item_class = GIMP_ITEM_CLASS (klass);
GimpDrawableClass *drawable_class = GIMP_DRAWABLE_CLASS (klass);
GimpChannelClass *channel_class = GIMP_CHANNEL_CLASS (klass);
viewable_class->default_icon_name = "gimp-selection";
item_class->is_attached = gimp_selection_is_attached;
item_class->get_tree = gimp_selection_get_tree;
item_class->translate = gimp_selection_translate;
item_class->scale = gimp_selection_scale;
item_class->resize = gimp_selection_resize;
item_class->flip = gimp_selection_flip;
item_class->rotate = gimp_selection_rotate;
item_class->fill = gimp_selection_fill;
item_class->stroke = gimp_selection_stroke;
item_class->default_name = _("Selection Mask");
item_class->translate_desc = C_("undo-type", "Move Selection");
item_class->fill_desc = C_("undo-type", "Fill Selection");
item_class->stroke_desc = C_("undo-type", "Stroke Selection");
drawable_class->convert_type = gimp_selection_convert_type;
drawable_class->invalidate_boundary = gimp_selection_invalidate_boundary;
channel_class->boundary = gimp_selection_boundary;
channel_class->is_empty = gimp_selection_is_empty;
channel_class->feather = gimp_selection_feather;
channel_class->sharpen = gimp_selection_sharpen;
channel_class->clear = gimp_selection_clear;
channel_class->all = gimp_selection_all;
channel_class->invert = gimp_selection_invert;
channel_class->border = gimp_selection_border;
channel_class->grow = gimp_selection_grow;
channel_class->shrink = gimp_selection_shrink;
channel_class->flood = gimp_selection_flood;
channel_class->feather_desc = C_("undo-type", "Feather Selection");
channel_class->sharpen_desc = C_("undo-type", "Sharpen Selection");
channel_class->clear_desc = C_("undo-type", "Select None");
channel_class->all_desc = C_("undo-type", "Select All");
channel_class->invert_desc = C_("undo-type", "Invert Selection");
channel_class->border_desc = C_("undo-type", "Border Selection");
channel_class->grow_desc = C_("undo-type", "Grow Selection");
channel_class->shrink_desc = C_("undo-type", "Shrink Selection");
channel_class->flood_desc = C_("undo-type", "Remove Holes");
}
static void
gimp_selection_init (GimpSelection *selection)
{
}
static gboolean
gimp_selection_is_attached (GimpItem *item)
{
return (GIMP_IS_IMAGE (gimp_item_get_image (item)) &&
gimp_image_get_mask (gimp_item_get_image (item)) ==
GIMP_CHANNEL (item));
}
static GimpItemTree *
gimp_selection_get_tree (GimpItem *item)
{
return NULL;
}
static void
gimp_selection_translate (GimpItem *item,
gdouble offset_x,
gdouble offset_y,
gboolean push_undo)
{
GIMP_ITEM_CLASS (parent_class)->translate (item, offset_x, offset_y,
push_undo);
}
static void
gimp_selection_scale (GimpItem *item,
gint new_width,
gint new_height,
gint new_offset_x,
gint new_offset_y,
GimpInterpolationType interp_type,
GimpProgress *progress)
{
GIMP_ITEM_CLASS (parent_class)->scale (item, new_width, new_height,
new_offset_x, new_offset_y,
interp_type, progress);
gimp_item_set_offset (item, 0, 0);
}
static void
gimp_selection_resize (GimpItem *item,
GimpContext *context,
GimpFillType fill_type,
gint new_width,
gint new_height,
gint offset_x,
gint offset_y)
{
GIMP_ITEM_CLASS (parent_class)->resize (item, context, GIMP_FILL_TRANSPARENT,
new_width, new_height,
offset_x, offset_y);
gimp_item_set_offset (item, 0, 0);
}
static void
gimp_selection_flip (GimpItem *item,
GimpContext *context,
GimpOrientationType flip_type,
gdouble axis,
gboolean clip_result)
{
GIMP_ITEM_CLASS (parent_class)->flip (item, context, flip_type, axis, TRUE);
}
static void
gimp_selection_rotate (GimpItem *item,
GimpContext *context,
GimpRotationType rotation_type,
gdouble center_x,
gdouble center_y,
gboolean clip_result)
{
GIMP_ITEM_CLASS (parent_class)->rotate (item, context, rotation_type,
center_x, center_y,
clip_result);
}
static gboolean
gimp_selection_fill (GimpItem *item,
GimpDrawable *drawable,
GimpFillOptions *fill_options,
gboolean push_undo,
GimpProgress *progress,
GError **error)
{
GimpSelection *selection = GIMP_SELECTION (item);
const GimpBoundSeg *dummy_in;
const GimpBoundSeg *dummy_out;
gint num_dummy_in;
gint num_dummy_out;
gboolean retval;
if (! gimp_channel_boundary (GIMP_CHANNEL (selection),
&dummy_in, &dummy_out,
&num_dummy_in, &num_dummy_out,
0, 0, 0, 0))
{
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
_("There is no selection to fill."));
return FALSE;
}
gimp_selection_suspend (selection);
retval = GIMP_ITEM_CLASS (parent_class)->fill (item, drawable,
fill_options,
push_undo, progress, error);
gimp_selection_resume (selection);
return retval;
}
static gboolean
gimp_selection_stroke (GimpItem *item,
GimpDrawable *drawable,
GimpStrokeOptions *stroke_options,
gboolean push_undo,
GimpProgress *progress,
GError **error)
{
GimpSelection *selection = GIMP_SELECTION (item);
const GimpBoundSeg *dummy_in;
const GimpBoundSeg *dummy_out;
gint num_dummy_in;
gint num_dummy_out;
gboolean retval;
if (! gimp_channel_boundary (GIMP_CHANNEL (selection),
&dummy_in, &dummy_out,
&num_dummy_in, &num_dummy_out,
0, 0, 0, 0))
{
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
_("There is no selection to stroke."));
return FALSE;
}
gimp_selection_suspend (selection);
retval = GIMP_ITEM_CLASS (parent_class)->stroke (item, drawable,
stroke_options,
push_undo, progress, error);
gimp_selection_resume (selection);
return retval;
}
static void
gimp_selection_convert_type (GimpDrawable *drawable,
GimpImage *dest_image,
const Babl *new_format,
GimpColorProfile *dest_profile,
GeglDitherMethod layer_dither_type,
GeglDitherMethod mask_dither_type,
gboolean push_undo,
GimpProgress *progress)
{
new_format =
gimp_babl_mask_format (gimp_babl_format_get_precision (new_format));
GIMP_DRAWABLE_CLASS (parent_class)->convert_type (drawable, dest_image,
new_format,
dest_profile,
layer_dither_type,
mask_dither_type,
push_undo,
progress);
}
static void
gimp_selection_invalidate_boundary (GimpDrawable *drawable)
{
GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
GimpLayer *layer;
/* Turn the current selection off */
gimp_image_selection_invalidate (image);
GIMP_DRAWABLE_CLASS (parent_class)->invalidate_boundary (drawable);
/* If there is a floating selection, update it's area...
* we need to do this since this selection mask can act as an additional
* mask in the composition of the floating selection
*/
layer = gimp_image_get_active_layer (image);
if (layer && gimp_layer_is_floating_sel (layer))
{
gimp_drawable_update (GIMP_DRAWABLE (layer), 0, 0, -1, -1);
}
#if 0
/* invalidate the preview */
drawable->private->preview_valid = FALSE;
#endif
}
static gboolean
gimp_selection_boundary (GimpChannel *channel,
const GimpBoundSeg **segs_in,
const GimpBoundSeg **segs_out,
gint *num_segs_in,
gint *num_segs_out,
gint unused1,
gint unused2,
gint unused3,
gint unused4)
{
GimpImage *image = gimp_item_get_image (GIMP_ITEM (channel));
GimpDrawable *drawable;
GimpLayer *layer;
if ((layer = gimp_image_get_floating_selection (image)))
{
/* If there is a floating selection, then
* we need to do some slightly different boundaries.
* Instead of inside and outside boundaries being defined
* by the extents of the layer, the inside boundary (the one
* that actually marches and is black/white) is the boundary of
* the floating selection. The outside boundary (doesn't move,
* is black/gray) is defined as the normal selection mask
*/
/* Find the selection mask boundary */
GIMP_CHANNEL_CLASS (parent_class)->boundary (channel,
segs_in, segs_out,
num_segs_in, num_segs_out,
0, 0, 0, 0);
/* Find the floating selection boundary */
*segs_in = floating_sel_boundary (layer, num_segs_in);
return TRUE;
}
else if ((drawable = gimp_image_get_active_drawable (image)) &&
GIMP_IS_CHANNEL (drawable))
{
/* Otherwise, return the boundary...if a channel is active */
return GIMP_CHANNEL_CLASS (parent_class)->boundary (channel,
segs_in, segs_out,
num_segs_in,
num_segs_out,
0, 0,
gimp_image_get_width (image),
gimp_image_get_height (image));
}
else if ((layer = gimp_image_get_active_layer (image)))
{
/* If a layer is active, we return multiple boundaries based
* on the extents
*/
gint x1, y1;
gint x2, y2;
gint offset_x;
gint offset_y;
gimp_item_get_offset (GIMP_ITEM (layer), &offset_x, &offset_y);
x1 = CLAMP (offset_x, 0, gimp_image_get_width (image));
y1 = CLAMP (offset_y, 0, gimp_image_get_height (image));
x2 = CLAMP (offset_x + gimp_item_get_width (GIMP_ITEM (layer)),
0, gimp_image_get_width (image));
y2 = CLAMP (offset_y + gimp_item_get_height (GIMP_ITEM (layer)),
0, gimp_image_get_height (image));
return GIMP_CHANNEL_CLASS (parent_class)->boundary (channel,
segs_in, segs_out,
num_segs_in,
num_segs_out,
x1, y1, x2, y2);
}
*segs_in = NULL;
*segs_out = NULL;
*num_segs_in = 0;
*num_segs_out = 0;
return FALSE;
}
static gboolean
gimp_selection_is_empty (GimpChannel *channel)
{
GimpSelection *selection = GIMP_SELECTION (channel);
/* in order to allow stroking of selections, we need to pretend here
* that the selection mask is empty so that it doesn't mask the paint
* during the stroke operation.
*/
if (selection->suspend_count > 0)
return TRUE;
return GIMP_CHANNEL_CLASS (parent_class)->is_empty (channel);
}
static void
gimp_selection_feather (GimpChannel *channel,
gdouble radius_x,
gdouble radius_y,
gboolean push_undo)
{
GIMP_CHANNEL_CLASS (parent_class)->feather (channel, radius_x, radius_y,
push_undo);
}
static void
gimp_selection_sharpen (GimpChannel *channel,
gboolean push_undo)
{
GIMP_CHANNEL_CLASS (parent_class)->sharpen (channel, push_undo);
}
static void
gimp_selection_clear (GimpChannel *channel,
const gchar *undo_desc,
gboolean push_undo)
{
GIMP_CHANNEL_CLASS (parent_class)->clear (channel, undo_desc, push_undo);
}
static void
gimp_selection_all (GimpChannel *channel,
gboolean push_undo)
{
GIMP_CHANNEL_CLASS (parent_class)->all (channel, push_undo);
}
static void
gimp_selection_invert (GimpChannel *channel,
gboolean push_undo)
{
GIMP_CHANNEL_CLASS (parent_class)->invert (channel, push_undo);
}
static void
gimp_selection_border (GimpChannel *channel,
gint radius_x,
gint radius_y,
GimpChannelBorderStyle style,
gboolean edge_lock,
gboolean push_undo)
{
GIMP_CHANNEL_CLASS (parent_class)->border (channel,
radius_x, radius_y,
style, edge_lock,
push_undo);
}
static void
gimp_selection_grow (GimpChannel *channel,
gint radius_x,
gint radius_y,
gboolean push_undo)
{
GIMP_CHANNEL_CLASS (parent_class)->grow (channel,
radius_x, radius_y,
push_undo);
}
static void
gimp_selection_shrink (GimpChannel *channel,
gint radius_x,
gint radius_y,
gboolean edge_lock,
gboolean push_undo)
{
GIMP_CHANNEL_CLASS (parent_class)->shrink (channel,
radius_x, radius_y, edge_lock,
push_undo);
}
static void
gimp_selection_flood (GimpChannel *channel,
gboolean push_undo)
{
GIMP_CHANNEL_CLASS (parent_class)->flood (channel, push_undo);
}
/* public functions */
GimpChannel *
gimp_selection_new (GimpImage *image,
gint width,
gint height)
{
GimpRGB black = { 0.0, 0.0, 0.0, 0.5 };
GimpChannel *channel;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (width > 0 && height > 0, NULL);
channel = GIMP_CHANNEL (gimp_drawable_new (GIMP_TYPE_SELECTION,
image, NULL,
0, 0, width, height,
gimp_image_get_mask_format (image)));
gimp_channel_set_color (channel, &black, FALSE);
gimp_channel_set_show_masked (channel, TRUE);
channel->x2 = width;
channel->y2 = height;
return channel;
}
gint
gimp_selection_suspend (GimpSelection *selection)
{
g_return_val_if_fail (GIMP_IS_SELECTION (selection), 0);
selection->suspend_count++;
return selection->suspend_count;
}
gint
gimp_selection_resume (GimpSelection *selection)
{
g_return_val_if_fail (GIMP_IS_SELECTION (selection), 0);
g_return_val_if_fail (selection->suspend_count > 0, 0);
selection->suspend_count--;
return selection->suspend_count;
}
GeglBuffer *
gimp_selection_extract (GimpSelection *selection,
GimpPickable *pickable,
GimpContext *context,
gboolean cut_image,
gboolean keep_indexed,
gboolean add_alpha,
gint *offset_x,
gint *offset_y,
GError **error)
{
GimpImage *image;
GeglBuffer *src_buffer;
GeglBuffer *dest_buffer;
const Babl *src_format;
const Babl *dest_format;
gint x1, y1, x2, y2;
gboolean non_empty;
gint off_x, off_y;
g_return_val_if_fail (GIMP_IS_SELECTION (selection), NULL);
g_return_val_if_fail (GIMP_IS_PICKABLE (pickable), NULL);
if (GIMP_IS_ITEM (pickable))
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (pickable)), NULL);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
image = gimp_pickable_get_image (pickable);
/* If there are no bounds, then just extract the entire image
* This may not be the correct behavior, but after getting rid
* of floating selections, it's still tempting to "cut" or "copy"
* a small layer and expect it to work, even though there is no
* actual selection mask
*/
if (GIMP_IS_DRAWABLE (pickable))
{
non_empty = gimp_item_mask_bounds (GIMP_ITEM (pickable),
&x1, &y1, &x2, &y2);
gimp_item_get_offset (GIMP_ITEM (pickable), &off_x, &off_y);
}
else
{
non_empty = gimp_item_bounds (GIMP_ITEM (selection),
&x1, &y1, &x2, &y2);
x2 += x1;
y2 += y1;
off_x = 0;
off_y = 0;
/* can't cut from non-drawables, fall back to copy */
cut_image = FALSE;
}
if (non_empty && ((x1 == x2) || (y1 == y2)))
{
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
_("Unable to cut or copy because the "
"selected region is empty."));
return NULL;
}
/* If there is a selection, we must add alpha because the selection
* could have any shape.
*/
if (non_empty)
add_alpha = TRUE;
src_format = gimp_pickable_get_format (pickable);
/* How many bytes in the temp buffer? */
if (babl_format_is_palette (src_format) && ! keep_indexed)
{
dest_format = gimp_image_get_format (image, GIMP_RGB,
gimp_image_get_precision (image),
add_alpha ||
babl_format_has_alpha (src_format),
babl_format_get_space (src_format));
}
else
{
if (add_alpha)
dest_format = gimp_pickable_get_format_with_alpha (pickable);
else
dest_format = src_format;
}
gimp_pickable_flush (pickable);
src_buffer = gimp_pickable_get_buffer (pickable);
/* Allocate the temp buffer */
dest_buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0, x2 - x1, y2 - y1),
dest_format);
/* First, copy the pixels, possibly doing INDEXED->RGB and adding alpha */
gimp_gegl_buffer_copy (src_buffer, GEGL_RECTANGLE (x1, y1, x2 - x1, y2 - y1),
GEGL_ABYSS_NONE,
dest_buffer, GEGL_RECTANGLE (0, 0, 0, 0));
if (non_empty)
{
/* If there is a selection, mask the dest_buffer with it */
GeglBuffer *mask_buffer;
mask_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (selection));
gimp_gegl_apply_opacity (dest_buffer, NULL, NULL, dest_buffer,
mask_buffer,
- (off_x + x1),
- (off_y + y1),
1.0);
if (cut_image)
{
gimp_drawable_edit_clear (GIMP_DRAWABLE (pickable), context);
}
}
else if (cut_image)
{
/* If we're cutting without selection, remove either the layer
* (or floating selection), the layer mask, or the channel
*/
if (GIMP_IS_LAYER (pickable))
{
gimp_image_remove_layer (image, GIMP_LAYER (pickable),
TRUE, NULL);
}
else if (GIMP_IS_LAYER_MASK (pickable))
{
gimp_layer_apply_mask (gimp_layer_mask_get_layer (GIMP_LAYER_MASK (pickable)),
GIMP_MASK_DISCARD, TRUE);
}
else if (GIMP_IS_CHANNEL (pickable))
{
gimp_image_remove_channel (image, GIMP_CHANNEL (pickable),
TRUE, NULL);
}
}
*offset_x = x1 + off_x;
*offset_y = y1 + off_y;
return dest_buffer;
}
GimpLayer *
gimp_selection_float (GimpSelection *selection,
GimpDrawable *drawable,
GimpContext *context,
gboolean cut_image,
gint off_x,
gint off_y,
GError **error)
{
GimpImage *image;
GimpLayer *layer;
GeglBuffer *buffer;
GimpColorProfile *profile;
gint x1, y1;
gint x2, y2;
g_return_val_if_fail (GIMP_IS_SELECTION (selection), 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);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
image = gimp_item_get_image (GIMP_ITEM (selection));
/* Make sure there is a region to float... */
if (! gimp_item_mask_bounds (GIMP_ITEM (drawable), &x1, &y1, &x2, &y2) ||
(x1 == x2 || y1 == y2))
{
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
_("Cannot float selection because the selected "
"region is empty."));
return NULL;
}
/* Start an undo group */
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_FS_FLOAT,
C_("undo-type", "Float Selection"));
/* Cut or copy the selected region */
buffer = gimp_selection_extract (selection, GIMP_PICKABLE (drawable), context,
cut_image, FALSE, TRUE,
&x1, &y1, NULL);
profile = gimp_color_managed_get_color_profile (GIMP_COLOR_MANAGED (drawable));
/* Clear the selection */
gimp_channel_clear (GIMP_CHANNEL (selection), NULL, TRUE);
/* Create a new layer from the buffer, using the drawable's type
* because it may be different from the image's type if we cut from
* a channel or layer mask
*/
layer = gimp_layer_new_from_gegl_buffer (buffer, image,
gimp_drawable_get_format_with_alpha (drawable),
_("Floated Layer"),
GIMP_OPACITY_OPAQUE,
gimp_image_get_default_new_layer_mode (image),
profile);
/* Set the offsets */
gimp_item_set_offset (GIMP_ITEM (layer), x1 + off_x, y1 + off_y);
/* Free the temp buffer */
g_object_unref (buffer);
/* Add the floating layer to the image */
floating_sel_attach (layer, drawable);
/* End an undo group */
gimp_image_undo_group_end (image);
/* invalidate the image's boundary variables */
GIMP_CHANNEL (selection)->boundary_known = FALSE;
return layer;
}
Reference in a new issue View git blame Copy permalink