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gimp/app/core/gimplayer.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 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 <stdlib.h>
#include <string.h>
#include <cairo.h>
#include <gegl.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpcolor/gimpcolor.h"
#include "libgimpconfig/gimpconfig.h"
#include "libgimpmath/gimpmath.h"
#include "core-types.h"
#include "operations/layer-modes/gimp-layer-modes.h"
#include "gegl/gimp-babl.h"
#include "gegl/gimp-gegl-apply-operation.h"
#include "gegl/gimp-gegl-loops.h"
#include "gegl/gimp-gegl-nodes.h"
#include "gimpboundary.h"
#include "gimpchannel-select.h"
#include "gimpcontext.h"
#include "gimpcontainer.h"
#include "gimpdrawable-floating-selection.h"
#include "gimperror.h"
#include "gimpgrouplayer.h"
#include "gimpimage-undo-push.h"
#include "gimpimage-undo.h"
#include "gimpimage.h"
#include "gimpimage-color-profile.h"
#include "gimplayer-floating-selection.h"
#include "gimplayer.h"
#include "gimplayermask.h"
#include "gimpmarshal.h"
#include "gimpobjectqueue.h"
#include "gimppickable.h"
#include "gimpprogress.h"
#include "gimp-intl.h"
enum
{
OPACITY_CHANGED,
MODE_CHANGED,
BLEND_SPACE_CHANGED,
COMPOSITE_SPACE_CHANGED,
COMPOSITE_MODE_CHANGED,
EFFECTIVE_MODE_CHANGED,
EXCLUDES_BACKDROP_CHANGED,
LOCK_ALPHA_CHANGED,
MASK_CHANGED,
APPLY_MASK_CHANGED,
EDIT_MASK_CHANGED,
SHOW_MASK_CHANGED,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_OPACITY,
PROP_MODE,
PROP_BLEND_SPACE,
PROP_COMPOSITE_SPACE,
PROP_COMPOSITE_MODE,
PROP_EXCLUDES_BACKDROP,
PROP_LOCK_ALPHA,
PROP_MASK,
PROP_FLOATING_SELECTION
};
static void gimp_color_managed_iface_init (GimpColorManagedInterface *iface);
static void gimp_pickable_iface_init (GimpPickableInterface *iface);
static void gimp_layer_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_layer_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gimp_layer_dispose (GObject *object);
static void gimp_layer_finalize (GObject *object);
static void gimp_layer_notify (GObject *object,
GParamSpec *pspec);
static void gimp_layer_name_changed (GimpObject *object);
static gint64 gimp_layer_get_memsize (GimpObject *object,
gint64 *gui_size);
static void gimp_layer_invalidate_preview (GimpViewable *viewable);
static gchar * gimp_layer_get_description (GimpViewable *viewable,
gchar **tooltip);
static GeglNode * gimp_layer_get_node (GimpFilter *filter);
static void gimp_layer_removed (GimpItem *item);
static void gimp_layer_unset_removed (GimpItem *item);
static gboolean gimp_layer_is_attached (GimpItem *item);
static GimpItemTree * gimp_layer_get_tree (GimpItem *item);
static GimpItem * gimp_layer_duplicate (GimpItem *item,
GType new_type);
static void gimp_layer_convert (GimpItem *item,
GimpImage *dest_image,
GType old_type);
static gboolean gimp_layer_rename (GimpItem *item,
const gchar *new_name,
const gchar *undo_desc,
GError **error);
static void gimp_layer_start_move (GimpItem *item,
gboolean push_undo);
static void gimp_layer_end_move (GimpItem *item,
gboolean push_undo);
static void gimp_layer_translate (GimpItem *item,
gdouble offset_x,
gdouble offset_y,
gboolean push_undo);
static void gimp_layer_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_layer_resize (GimpItem *item,
GimpContext *context,
GimpFillType fill_type,
gint new_width,
gint new_height,
gint offset_x,
gint offset_y);
static void gimp_layer_flip (GimpItem *item,
GimpContext *context,
GimpOrientationType flip_type,
gdouble axis,
gboolean clip_result);
static void gimp_layer_rotate (GimpItem *item,
GimpContext *context,
GimpRotationType rotate_type,
gdouble center_x,
gdouble center_y,
gboolean clip_result);
static void gimp_layer_transform (GimpItem *item,
GimpContext *context,
const GimpMatrix3 *matrix,
GimpTransformDirection direction,
GimpInterpolationType interpolation_type,
GimpTransformResize clip_result,
GimpProgress *progress);
static void gimp_layer_to_selection (GimpItem *item,
GimpChannelOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y);
static void gimp_layer_alpha_changed (GimpDrawable *drawable);
static gint64 gimp_layer_estimate_memsize (GimpDrawable *drawable,
GimpComponentType component_type,
gint width,
gint height);
static void gimp_layer_convert_type (GimpDrawable *drawable,
GimpImage *dest_image,
const Babl *new_format,
GimpColorProfile *src_profile,
GimpColorProfile *dest_profile,
GeglDitherMethod layer_dither_type,
GeglDitherMethod mask_dither_type,
gboolean push_undo,
GimpProgress *progress);
static void gimp_layer_invalidate_boundary (GimpDrawable *drawable);
static void gimp_layer_get_active_components (GimpDrawable *drawable,
gboolean *active);
static GimpComponentMask
gimp_layer_get_active_mask (GimpDrawable *drawable);
static void gimp_layer_set_buffer (GimpDrawable *drawable,
gboolean push_undo,
const gchar *undo_desc,
GeglBuffer *buffer,
gint offset_x,
gint offset_y);
static GimpColorProfile *
gimp_layer_get_color_profile (GimpColorManaged *managed);
static gdouble gimp_layer_get_opacity_at (GimpPickable *pickable,
gint x,
gint y);
static void gimp_layer_pixel_to_srgb (GimpPickable *pickable,
const Babl *format,
gpointer pixel,
GimpRGB *color);
static void gimp_layer_srgb_to_pixel (GimpPickable *pickable,
const GimpRGB *color,
const Babl *format,
gpointer pixel);
static void gimp_layer_real_translate (GimpLayer *layer,
gint offset_x,
gint offset_y);
static void gimp_layer_real_scale (GimpLayer *layer,
gint new_width,
gint new_height,
gint new_offset_x,
gint new_offset_y,
GimpInterpolationType interp_type,
GimpProgress *progress);
static void gimp_layer_real_resize (GimpLayer *layer,
GimpContext *context,
GimpFillType fill_type,
gint new_width,
gint new_height,
gint offset_x,
gint offset_y);
static void gimp_layer_real_flip (GimpLayer *layer,
GimpContext *context,
GimpOrientationType flip_type,
gdouble axis,
gboolean clip_result);
static void gimp_layer_real_rotate (GimpLayer *layer,
GimpContext *context,
GimpRotationType rotate_type,
gdouble center_x,
gdouble center_y,
gboolean clip_result);
static void gimp_layer_real_transform (GimpLayer *layer,
GimpContext *context,
const GimpMatrix3 *matrix,
GimpTransformDirection direction,
GimpInterpolationType interpolation_type,
GimpTransformResize clip_result,
GimpProgress *progress);
static void gimp_layer_real_convert_type (GimpLayer *layer,
GimpImage *dest_image,
const Babl *new_format,
GimpColorProfile *src_profile,
GimpColorProfile *dest_profile,
GeglDitherMethod layer_dither_type,
GeglDitherMethod mask_dither_type,
gboolean push_undo,
GimpProgress *progress);
static void gimp_layer_real_get_effective_mode (GimpLayer *layer,
GimpLayerMode *mode,
GimpLayerColorSpace *blend_space,
GimpLayerColorSpace *composite_space,
GimpLayerCompositeMode *composite_mode);
static gboolean
gimp_layer_real_get_excludes_backdrop (GimpLayer *layer);
static void gimp_layer_layer_mask_update (GimpDrawable *layer_mask,
gint x,
gint y,
gint width,
gint height,
GimpLayer *layer);
G_DEFINE_TYPE_WITH_CODE (GimpLayer, gimp_layer, GIMP_TYPE_DRAWABLE,
G_IMPLEMENT_INTERFACE (GIMP_TYPE_COLOR_MANAGED,
gimp_color_managed_iface_init)
G_IMPLEMENT_INTERFACE (GIMP_TYPE_PICKABLE,
gimp_pickable_iface_init))
#define parent_class gimp_layer_parent_class
static guint layer_signals[LAST_SIGNAL] = { 0 };
static void
gimp_layer_class_init (GimpLayerClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpObjectClass *gimp_object_class = GIMP_OBJECT_CLASS (klass);
GimpViewableClass *viewable_class = GIMP_VIEWABLE_CLASS (klass);
GimpFilterClass *filter_class = GIMP_FILTER_CLASS (klass);
GimpItemClass *item_class = GIMP_ITEM_CLASS (klass);
GimpDrawableClass *drawable_class = GIMP_DRAWABLE_CLASS (klass);
layer_signals[OPACITY_CHANGED] =
g_signal_new ("opacity-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpLayerClass, opacity_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
layer_signals[MODE_CHANGED] =
g_signal_new ("mode-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpLayerClass, mode_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
layer_signals[BLEND_SPACE_CHANGED] =
g_signal_new ("blend-space-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpLayerClass, blend_space_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
layer_signals[COMPOSITE_SPACE_CHANGED] =
g_signal_new ("composite-space-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpLayerClass, composite_space_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
layer_signals[COMPOSITE_MODE_CHANGED] =
g_signal_new ("composite-mode-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpLayerClass, composite_mode_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
layer_signals[EFFECTIVE_MODE_CHANGED] =
g_signal_new ("effective-mode-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpLayerClass, effective_mode_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
layer_signals[EXCLUDES_BACKDROP_CHANGED] =
g_signal_new ("excludes-backdrop-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpLayerClass, excludes_backdrop_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
layer_signals[LOCK_ALPHA_CHANGED] =
g_signal_new ("lock-alpha-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpLayerClass, lock_alpha_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
layer_signals[MASK_CHANGED] =
g_signal_new ("mask-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpLayerClass, mask_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
layer_signals[APPLY_MASK_CHANGED] =
g_signal_new ("apply-mask-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpLayerClass, apply_mask_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
layer_signals[EDIT_MASK_CHANGED] =
g_signal_new ("edit-mask-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpLayerClass, edit_mask_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
layer_signals[SHOW_MASK_CHANGED] =
g_signal_new ("show-mask-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpLayerClass, show_mask_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
object_class->set_property = gimp_layer_set_property;
object_class->get_property = gimp_layer_get_property;
object_class->dispose = gimp_layer_dispose;
object_class->finalize = gimp_layer_finalize;
object_class->notify = gimp_layer_notify;
gimp_object_class->name_changed = gimp_layer_name_changed;
gimp_object_class->get_memsize = gimp_layer_get_memsize;
viewable_class->default_icon_name = "gimp-layer";
viewable_class->invalidate_preview = gimp_layer_invalidate_preview;
viewable_class->get_description = gimp_layer_get_description;
filter_class->get_node = gimp_layer_get_node;
item_class->removed = gimp_layer_removed;
item_class->unset_removed = gimp_layer_unset_removed;
item_class->is_attached = gimp_layer_is_attached;
item_class->get_tree = gimp_layer_get_tree;
item_class->duplicate = gimp_layer_duplicate;
item_class->convert = gimp_layer_convert;
item_class->rename = gimp_layer_rename;
item_class->start_move = gimp_layer_start_move;
item_class->end_move = gimp_layer_end_move;
item_class->translate = gimp_layer_translate;
item_class->scale = gimp_layer_scale;
item_class->resize = gimp_layer_resize;
item_class->flip = gimp_layer_flip;
item_class->rotate = gimp_layer_rotate;
item_class->transform = gimp_layer_transform;
item_class->to_selection = gimp_layer_to_selection;
item_class->default_name = _("Layer");
item_class->rename_desc = C_("undo-type", "Rename Layer");
item_class->translate_desc = C_("undo-type", "Move Layer");
item_class->scale_desc = C_("undo-type", "Scale Layer");
item_class->resize_desc = C_("undo-type", "Resize Layer");
item_class->flip_desc = C_("undo-type", "Flip Layer");
item_class->rotate_desc = C_("undo-type", "Rotate Layer");
item_class->transform_desc = C_("undo-type", "Transform Layer");
item_class->to_selection_desc = C_("undo-type", "Alpha to Selection");
item_class->reorder_desc = C_("undo-type", "Reorder Layer");
item_class->raise_desc = C_("undo-type", "Raise Layer");
item_class->raise_to_top_desc = C_("undo-type", "Raise Layer to Top");
item_class->lower_desc = C_("undo-type", "Lower Layer");
item_class->lower_to_bottom_desc = C_("undo-type", "Lower Layer to Bottom");
item_class->raise_failed = _("Layer cannot be raised higher.");
item_class->lower_failed = _("Layer cannot be lowered more.");
drawable_class->alpha_changed = gimp_layer_alpha_changed;
drawable_class->estimate_memsize = gimp_layer_estimate_memsize;
drawable_class->convert_type = gimp_layer_convert_type;
drawable_class->invalidate_boundary = gimp_layer_invalidate_boundary;
drawable_class->get_active_components = gimp_layer_get_active_components;
drawable_class->get_active_mask = gimp_layer_get_active_mask;
drawable_class->set_buffer = gimp_layer_set_buffer;
klass->opacity_changed = NULL;
klass->mode_changed = NULL;
klass->blend_space_changed = NULL;
klass->composite_space_changed = NULL;
klass->composite_mode_changed = NULL;
klass->excludes_backdrop_changed = NULL;
klass->lock_alpha_changed = NULL;
klass->mask_changed = NULL;
klass->apply_mask_changed = NULL;
klass->edit_mask_changed = NULL;
klass->show_mask_changed = NULL;
klass->translate = gimp_layer_real_translate;
klass->scale = gimp_layer_real_scale;
klass->resize = gimp_layer_real_resize;
klass->flip = gimp_layer_real_flip;
klass->rotate = gimp_layer_real_rotate;
klass->transform = gimp_layer_real_transform;
klass->convert_type = gimp_layer_real_convert_type;
klass->get_effective_mode = gimp_layer_real_get_effective_mode;
klass->get_excludes_backdrop = gimp_layer_real_get_excludes_backdrop;
g_object_class_install_property (object_class, PROP_OPACITY,
g_param_spec_double ("opacity", NULL, NULL,
GIMP_OPACITY_TRANSPARENT,
GIMP_OPACITY_OPAQUE,
GIMP_OPACITY_OPAQUE,
GIMP_PARAM_READABLE));
g_object_class_install_property (object_class, PROP_MODE,
g_param_spec_enum ("mode", NULL, NULL,
GIMP_TYPE_LAYER_MODE,
GIMP_LAYER_MODE_NORMAL,
GIMP_PARAM_READABLE));
g_object_class_install_property (object_class, PROP_BLEND_SPACE,
g_param_spec_enum ("blend-space",
NULL, NULL,
GIMP_TYPE_LAYER_COLOR_SPACE,
GIMP_LAYER_COLOR_SPACE_AUTO,
GIMP_PARAM_READABLE));
g_object_class_install_property (object_class, PROP_COMPOSITE_SPACE,
g_param_spec_enum ("composite-space",
NULL, NULL,
GIMP_TYPE_LAYER_COLOR_SPACE,
GIMP_LAYER_COLOR_SPACE_AUTO,
GIMP_PARAM_READABLE));
g_object_class_install_property (object_class, PROP_COMPOSITE_MODE,
g_param_spec_enum ("composite-mode",
NULL, NULL,
GIMP_TYPE_LAYER_COMPOSITE_MODE,
GIMP_LAYER_COMPOSITE_AUTO,
GIMP_PARAM_READABLE));
g_object_class_install_property (object_class, PROP_EXCLUDES_BACKDROP,
g_param_spec_boolean ("excludes-backdrop",
NULL, NULL,
FALSE,
GIMP_PARAM_READABLE));
g_object_class_install_property (object_class, PROP_LOCK_ALPHA,
g_param_spec_boolean ("lock-alpha",
NULL, NULL,
FALSE,
GIMP_PARAM_READABLE));
g_object_class_install_property (object_class, PROP_MASK,
g_param_spec_object ("mask",
NULL, NULL,
GIMP_TYPE_LAYER_MASK,
GIMP_PARAM_READABLE));
g_object_class_install_property (object_class, PROP_FLOATING_SELECTION,
g_param_spec_boolean ("floating-selection",
NULL, NULL,
FALSE,
GIMP_PARAM_READABLE));
}
static void
gimp_layer_init (GimpLayer *layer)
{
layer->opacity = GIMP_OPACITY_OPAQUE;
layer->mode = GIMP_LAYER_MODE_NORMAL;
layer->blend_space = GIMP_LAYER_COLOR_SPACE_AUTO;
layer->composite_space = GIMP_LAYER_COLOR_SPACE_AUTO;
layer->composite_mode = GIMP_LAYER_COMPOSITE_AUTO;
layer->effective_mode = layer->mode;
layer->effective_blend_space = gimp_layer_get_real_blend_space (layer);
layer->effective_composite_space = gimp_layer_get_real_composite_space (layer);
layer->effective_composite_mode = gimp_layer_get_real_composite_mode (layer);
layer->excludes_backdrop = FALSE;
layer->lock_alpha = FALSE;
layer->mask = NULL;
layer->apply_mask = TRUE;
layer->edit_mask = TRUE;
layer->show_mask = FALSE;
/* floating selection */
layer->fs.drawable = NULL;
layer->fs.boundary_known = FALSE;
layer->fs.segs = NULL;
layer->fs.num_segs = 0;
}
static void
gimp_color_managed_iface_init (GimpColorManagedInterface *iface)
{
iface->get_color_profile = gimp_layer_get_color_profile;
}
static void
gimp_pickable_iface_init (GimpPickableInterface *iface)
{
iface->get_opacity_at = gimp_layer_get_opacity_at;
iface->pixel_to_srgb = gimp_layer_pixel_to_srgb;
iface->srgb_to_pixel = gimp_layer_srgb_to_pixel;
}
static void
gimp_layer_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
switch (property_id)
{
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_layer_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpLayer *layer = GIMP_LAYER (object);
switch (property_id)
{
case PROP_OPACITY:
g_value_set_double (value, gimp_layer_get_opacity (layer));
break;
case PROP_MODE:
g_value_set_enum (value, gimp_layer_get_mode (layer));
break;
case PROP_BLEND_SPACE:
g_value_set_enum (value, gimp_layer_get_blend_space (layer));
break;
case PROP_COMPOSITE_SPACE:
g_value_set_enum (value, gimp_layer_get_composite_space (layer));
break;
case PROP_COMPOSITE_MODE:
g_value_set_enum (value, gimp_layer_get_composite_mode (layer));
break;
case PROP_EXCLUDES_BACKDROP:
g_value_set_boolean (value, gimp_layer_get_excludes_backdrop (layer));
break;
case PROP_LOCK_ALPHA:
g_value_set_boolean (value, gimp_layer_get_lock_alpha (layer));
break;
case PROP_MASK:
g_value_set_object (value, gimp_layer_get_mask (layer));
break;
case PROP_FLOATING_SELECTION:
g_value_set_boolean (value, gimp_layer_is_floating_sel (layer));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_layer_dispose (GObject *object)
{
GimpLayer *layer = GIMP_LAYER (object);
if (layer->mask)
g_signal_handlers_disconnect_by_func (layer->mask,
gimp_layer_layer_mask_update,
layer);
if (gimp_layer_is_floating_sel (layer))
{
GimpDrawable *fs_drawable = gimp_layer_get_floating_sel_drawable (layer);
/* only detach if this is actually the drawable's fs because the
* layer might be on the undo stack and not attached to anything
*/
if (gimp_drawable_get_floating_sel (fs_drawable) == layer)
gimp_drawable_detach_floating_sel (fs_drawable);
gimp_layer_set_floating_sel_drawable (layer, NULL);
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gimp_layer_finalize (GObject *object)
{
GimpLayer *layer = GIMP_LAYER (object);
g_clear_object (&layer->mask);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_layer_update_mode_node (GimpLayer *layer)
{
GeglNode *mode_node;
GimpLayerMode visible_mode;
GimpLayerColorSpace visible_blend_space;
GimpLayerColorSpace visible_composite_space;
GimpLayerCompositeMode visible_composite_mode;
mode_node = gimp_drawable_get_mode_node (GIMP_DRAWABLE (layer));
if (layer->mask && layer->show_mask)
{
visible_mode = GIMP_LAYER_MODE_NORMAL;
visible_blend_space = GIMP_LAYER_COLOR_SPACE_AUTO;
visible_composite_space = GIMP_LAYER_COLOR_SPACE_AUTO;
visible_composite_mode = GIMP_LAYER_COMPOSITE_AUTO;
/* This makes sure that masks of LEGACY-mode layers are
* composited in PERCEPTUAL space, and non-LEGACY layers in
* LINEAR space, or whatever composite space was chosen in the
* layer attributes dialog
*/
visible_composite_space = gimp_layer_get_real_composite_space (layer);
}
else
{
visible_mode = layer->effective_mode;
visible_blend_space = layer->effective_blend_space;
visible_composite_space = layer->effective_composite_space;
visible_composite_mode = layer->effective_composite_mode;
}
gimp_gegl_mode_node_set_mode (mode_node,
visible_mode,
visible_blend_space,
visible_composite_space,
visible_composite_mode);
gimp_gegl_mode_node_set_opacity (mode_node, layer->opacity);
}
static void
gimp_layer_notify (GObject *object,
GParamSpec *pspec)
{
if (! strcmp (pspec->name, "is-last-node") &&
gimp_filter_peek_node (GIMP_FILTER (object)))
{
gimp_layer_update_mode_node (GIMP_LAYER (object));
gimp_drawable_update (GIMP_DRAWABLE (object), 0, 0, -1, -1);
}
}
static void
gimp_layer_name_changed (GimpObject *object)
{
GimpLayer *layer = GIMP_LAYER (object);
if (GIMP_OBJECT_CLASS (parent_class)->name_changed)
GIMP_OBJECT_CLASS (parent_class)->name_changed (object);
if (layer->mask)
{
gchar *mask_name = g_strdup_printf (_("%s mask"),
gimp_object_get_name (object));
gimp_object_take_name (GIMP_OBJECT (layer->mask), mask_name);
}
}
static gint64
gimp_layer_get_memsize (GimpObject *object,
gint64 *gui_size)
{
GimpLayer *layer = GIMP_LAYER (object);
gint64 memsize = 0;
memsize += gimp_object_get_memsize (GIMP_OBJECT (layer->mask), gui_size);
*gui_size += layer->fs.num_segs * sizeof (GimpBoundSeg);
return memsize + GIMP_OBJECT_CLASS (parent_class)->get_memsize (object,
gui_size);
}
static void
gimp_layer_invalidate_preview (GimpViewable *viewable)
{
GimpLayer *layer = GIMP_LAYER (viewable);
GIMP_VIEWABLE_CLASS (parent_class)->invalidate_preview (viewable);
if (gimp_layer_is_floating_sel (layer))
floating_sel_invalidate (layer);
}
static gchar *
gimp_layer_get_description (GimpViewable *viewable,
gchar **tooltip)
{
if (gimp_layer_is_floating_sel (GIMP_LAYER (viewable)))
{
return g_strdup_printf (_("Floating Selection\n(%s)"),
gimp_object_get_name (viewable));
}
return GIMP_VIEWABLE_CLASS (parent_class)->get_description (viewable,
tooltip);
}
static GeglNode *
gimp_layer_get_node (GimpFilter *filter)
{
GimpDrawable *drawable = GIMP_DRAWABLE (filter);
GimpLayer *layer = GIMP_LAYER (filter);
GeglNode *node;
GeglNode *input;
GeglNode *source;
GeglNode *mode_node;
gboolean source_node_hijacked = FALSE;
node = GIMP_FILTER_CLASS (parent_class)->get_node (filter);
input = gegl_node_get_input_proxy (node, "input");
source = gimp_drawable_get_source_node (drawable);
/* if the source node already has a parent, we are a floating
* selection and the source node has been hijacked by the fs'
* drawable
*/
if (gegl_node_get_parent (source))
source_node_hijacked = TRUE;
if (! source_node_hijacked)
gegl_node_add_child (node, source);
gegl_node_connect_to (input, "output",
source, "input");
g_warn_if_fail (layer->layer_offset_node == NULL);
g_warn_if_fail (layer->mask_offset_node == NULL);
/* the mode node connects it all, and has aux and aux2 inputs for
* the layer and its mask
*/
mode_node = gimp_drawable_get_mode_node (drawable);
gimp_layer_update_mode_node (layer);
/* the layer's offset node */
layer->layer_offset_node = gegl_node_new_child (node,
"operation", "gegl:translate",
NULL);
gimp_item_add_offset_node (GIMP_ITEM (layer), layer->layer_offset_node);
/* the layer mask's offset node */
layer->mask_offset_node = gegl_node_new_child (node,
"operation", "gegl:translate",
NULL);
gimp_item_add_offset_node (GIMP_ITEM (layer), layer->mask_offset_node);
if (! source_node_hijacked)
{
gegl_node_connect_to (source, "output",
layer->layer_offset_node, "input");
}
if (! (layer->mask && gimp_layer_get_show_mask (layer)))
{
gegl_node_connect_to (layer->layer_offset_node, "output",
mode_node, "aux");
}
if (layer->mask)
{
GeglNode *mask;
mask = gimp_drawable_get_source_node (GIMP_DRAWABLE (layer->mask));
gegl_node_connect_to (mask, "output",
layer->mask_offset_node, "input");
if (gimp_layer_get_show_mask (layer))
{
gegl_node_connect_to (layer->mask_offset_node, "output",
mode_node, "aux");
}
else if (gimp_layer_get_apply_mask (layer))
{
gegl_node_connect_to (layer->mask_offset_node, "output",
mode_node, "aux2");
}
}
return node;
}
static void
gimp_layer_removed (GimpItem *item)
{
GimpLayer *layer = GIMP_LAYER (item);
if (layer->mask)
gimp_item_removed (GIMP_ITEM (layer->mask));
if (GIMP_ITEM_CLASS (parent_class)->removed)
GIMP_ITEM_CLASS (parent_class)->removed (item);
}
static void
gimp_layer_unset_removed (GimpItem *item)
{
GimpLayer *layer = GIMP_LAYER (item);
if (layer->mask)
gimp_item_unset_removed (GIMP_ITEM (layer->mask));
if (GIMP_ITEM_CLASS (parent_class)->unset_removed)
GIMP_ITEM_CLASS (parent_class)->unset_removed (item);
}
static gboolean
gimp_layer_is_attached (GimpItem *item)
{
GimpImage *image = gimp_item_get_image (item);
return (GIMP_IS_IMAGE (image) &&
gimp_container_have (gimp_image_get_layers (image),
GIMP_OBJECT (item)));
}
static GimpItemTree *
gimp_layer_get_tree (GimpItem *item)
{
if (gimp_item_is_attached (item))
{
GimpImage *image = gimp_item_get_image (item);
return gimp_image_get_layer_tree (image);
}
return NULL;
}
static GimpItem *
gimp_layer_duplicate (GimpItem *item,
GType new_type)
{
GimpItem *new_item;
g_return_val_if_fail (g_type_is_a (new_type, GIMP_TYPE_DRAWABLE), NULL);
new_item = GIMP_ITEM_CLASS (parent_class)->duplicate (item, new_type);
if (GIMP_IS_LAYER (new_item))
{
GimpLayer *layer = GIMP_LAYER (item);
GimpLayer *new_layer = GIMP_LAYER (new_item);
gimp_layer_set_mode (new_layer,
gimp_layer_get_mode (layer), FALSE);
gimp_layer_set_blend_space (new_layer,
gimp_layer_get_blend_space (layer), FALSE);
gimp_layer_set_composite_space (new_layer,
gimp_layer_get_composite_space (layer), FALSE);
gimp_layer_set_composite_mode (new_layer,
gimp_layer_get_composite_mode (layer), FALSE);
gimp_layer_set_opacity (new_layer,
gimp_layer_get_opacity (layer), FALSE);
if (gimp_layer_can_lock_alpha (new_layer))
gimp_layer_set_lock_alpha (new_layer,
gimp_layer_get_lock_alpha (layer), FALSE);
/* duplicate the layer mask if necessary */
if (layer->mask)
{
GimpItem *mask;
mask = gimp_item_duplicate (GIMP_ITEM (layer->mask),
G_TYPE_FROM_INSTANCE (layer->mask));
gimp_layer_add_mask (new_layer, GIMP_LAYER_MASK (mask), FALSE, NULL);
new_layer->apply_mask = layer->apply_mask;
new_layer->edit_mask = layer->edit_mask;
new_layer->show_mask = layer->show_mask;
}
}
return new_item;
}
static void
gimp_layer_convert (GimpItem *item,
GimpImage *dest_image,
GType old_type)
{
GimpLayer *layer = GIMP_LAYER (item);
GimpDrawable *drawable = GIMP_DRAWABLE (item);
GimpImageBaseType old_base_type;
GimpImageBaseType new_base_type;
GimpPrecision old_precision;
GimpPrecision new_precision;
GimpColorProfile *src_profile = NULL;
GimpColorProfile *dest_profile = NULL;
old_base_type = gimp_drawable_get_base_type (drawable);
new_base_type = gimp_image_get_base_type (dest_image);
old_precision = gimp_drawable_get_precision (drawable);
new_precision = gimp_image_get_precision (dest_image);
if (g_type_is_a (old_type, GIMP_TYPE_LAYER))
{
src_profile =
gimp_color_managed_get_color_profile (GIMP_COLOR_MANAGED (item));
dest_profile =
gimp_color_managed_get_color_profile (GIMP_COLOR_MANAGED (dest_image));
if (gimp_color_profile_is_equal (dest_profile, src_profile))
{
src_profile = NULL;
dest_profile = NULL;
}
}
if (old_base_type != new_base_type ||
old_precision != new_precision ||
dest_profile)
{
gimp_drawable_convert_type (drawable, dest_image,
new_base_type,
new_precision,
gimp_drawable_has_alpha (drawable),
src_profile,
dest_profile,
GEGL_DITHER_NONE, GEGL_DITHER_NONE,
FALSE, NULL);
}
if (layer->mask)
gimp_item_set_image (GIMP_ITEM (layer->mask), dest_image);
GIMP_ITEM_CLASS (parent_class)->convert (item, dest_image, old_type);
}
static gboolean
gimp_layer_rename (GimpItem *item,
const gchar *new_name,
const gchar *undo_desc,
GError **error)
{
GimpLayer *layer = GIMP_LAYER (item);
GimpImage *image = gimp_item_get_image (item);
gboolean attached;
gboolean floating_sel;
attached = gimp_item_is_attached (item);
floating_sel = gimp_layer_is_floating_sel (layer);
if (floating_sel)
{
if (GIMP_IS_CHANNEL (gimp_layer_get_floating_sel_drawable (layer)))
{
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
_("Cannot create a new layer from the floating "
"selection because it belongs to a layer mask "
"or channel."));
return FALSE;
}
if (attached)
{
gimp_image_undo_group_start (image,
GIMP_UNDO_GROUP_ITEM_PROPERTIES,
undo_desc);
floating_sel_to_layer (layer, NULL);
}
}
GIMP_ITEM_CLASS (parent_class)->rename (item, new_name, undo_desc, error);
if (attached && floating_sel)
gimp_image_undo_group_end (image);
return TRUE;
}
static void
gimp_layer_start_move (GimpItem *item,
gboolean push_undo)
{
GimpLayer *layer = GIMP_LAYER (item);
GimpLayer *ancestor = layer;
GSList *ancestors = NULL;
/* suspend mask cropping for all of the layer's ancestors */
while ((ancestor = gimp_layer_get_parent (ancestor)))
{
gimp_group_layer_suspend_mask (GIMP_GROUP_LAYER (ancestor), push_undo);
ancestors = g_slist_prepend (ancestors, g_object_ref (ancestor));
}
/* we keep the ancestor list around, so that we can resume mask cropping for
* the same set of groups in gimp_layer_end_move(). note that
* gimp_image_remove_layer() calls start_move() before removing the layer,
* while it's still part of the layer tree, and end_move() afterwards, when
* it's no longer part of the layer tree, and hence we can't use get_parent()
* in end_move() to get the same set of ancestors.
*/
layer->move_stack = g_slist_prepend (layer->move_stack, ancestors);
if (GIMP_ITEM_CLASS (parent_class)->start_move)
GIMP_ITEM_CLASS (parent_class)->start_move (item, push_undo);
}
static void
gimp_layer_end_move (GimpItem *item,
gboolean push_undo)
{
GimpLayer *layer = GIMP_LAYER (item);
GSList *ancestors;
GSList *iter;
g_return_if_fail (layer->move_stack != NULL);
if (GIMP_ITEM_CLASS (parent_class)->end_move)
GIMP_ITEM_CLASS (parent_class)->end_move (item, push_undo);
ancestors = layer->move_stack->data;
layer->move_stack = g_slist_remove (layer->move_stack, ancestors);
/* resume mask cropping for all of the layer's ancestors */
for (iter = ancestors; iter; iter = g_slist_next (iter))
{
GimpGroupLayer *ancestor = iter->data;
gimp_group_layer_resume_mask (ancestor, push_undo);
g_object_unref (ancestor);
}
g_slist_free (ancestors);
}
static void
gimp_layer_translate (GimpItem *item,
gdouble offset_x,
gdouble offset_y,
gboolean push_undo)
{
GimpLayer *layer = GIMP_LAYER (item);
if (push_undo)
gimp_image_undo_push_item_displace (gimp_item_get_image (item), NULL, item);
GIMP_LAYER_GET_CLASS (layer)->translate (layer,
SIGNED_ROUND (offset_x),
SIGNED_ROUND (offset_y));
if (layer->mask)
{
gint off_x, off_y;
gimp_item_get_offset (item, &off_x, &off_y);
gimp_item_set_offset (GIMP_ITEM (layer->mask), off_x, off_y);
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (layer->mask));
}
}
static void
gimp_layer_scale (GimpItem *item,
gint new_width,
gint new_height,
gint new_offset_x,
gint new_offset_y,
GimpInterpolationType interpolation_type,
GimpProgress *progress)
{
GimpLayer *layer = GIMP_LAYER (item);
GimpObjectQueue *queue = NULL;
if (progress && layer->mask)
{
GimpLayerMask *mask;
queue = gimp_object_queue_new (progress);
progress = GIMP_PROGRESS (queue);
/* temporarily set layer->mask to NULL, so that its size won't be counted
* when pushing the layer to the queue.
*/
mask = layer->mask;
layer->mask = NULL;
gimp_object_queue_push (queue, layer);
gimp_object_queue_push (queue, mask);
layer->mask = mask;
}
if (queue)
gimp_object_queue_pop (queue);
GIMP_LAYER_GET_CLASS (layer)->scale (layer, new_width, new_height,
new_offset_x, new_offset_y,
interpolation_type, progress);
if (layer->mask)
{
if (queue)
gimp_object_queue_pop (queue);
gimp_item_scale (GIMP_ITEM (layer->mask),
new_width, new_height,
new_offset_x, new_offset_y,
interpolation_type, progress);
}
g_clear_object (&queue);
}
static void
gimp_layer_resize (GimpItem *item,
GimpContext *context,
GimpFillType fill_type,
gint new_width,
gint new_height,
gint offset_x,
gint offset_y)
{
GimpLayer *layer = GIMP_LAYER (item);
GIMP_LAYER_GET_CLASS (layer)->resize (layer, context, fill_type,
new_width, new_height,
offset_x, offset_y);
if (layer->mask)
gimp_item_resize (GIMP_ITEM (layer->mask), context, GIMP_FILL_TRANSPARENT,
new_width, new_height, offset_x, offset_y);
}
static void
gimp_layer_flip (GimpItem *item,
GimpContext *context,
GimpOrientationType flip_type,
gdouble axis,
gboolean clip_result)
{
GimpLayer *layer = GIMP_LAYER (item);
GIMP_LAYER_GET_CLASS (layer)->flip (layer, context, flip_type, axis,
clip_result);
if (layer->mask)
gimp_item_flip (GIMP_ITEM (layer->mask), context,
flip_type, axis, clip_result);
}
static void
gimp_layer_rotate (GimpItem *item,
GimpContext *context,
GimpRotationType rotate_type,
gdouble center_x,
gdouble center_y,
gboolean clip_result)
{
GimpLayer *layer = GIMP_LAYER (item);
GIMP_LAYER_GET_CLASS (layer)->rotate (layer, context,
rotate_type, center_x, center_y,
clip_result);
if (layer->mask)
gimp_item_rotate (GIMP_ITEM (layer->mask), context,
rotate_type, center_x, center_y, clip_result);
}
static void
gimp_layer_transform (GimpItem *item,
GimpContext *context,
const GimpMatrix3 *matrix,
GimpTransformDirection direction,
GimpInterpolationType interpolation_type,
GimpTransformResize clip_result,
GimpProgress *progress)
{
GimpLayer *layer = GIMP_LAYER (item);
GimpObjectQueue *queue = NULL;
if (progress && layer->mask)
{
GimpLayerMask *mask;
queue = gimp_object_queue_new (progress);
progress = GIMP_PROGRESS (queue);
/* temporarily set layer->mask to NULL, so that its size won't be counted
* when pushing the layer to the queue.
*/
mask = layer->mask;
layer->mask = NULL;
gimp_object_queue_push (queue, layer);
gimp_object_queue_push (queue, mask);
layer->mask = mask;
}
if (queue)
gimp_object_queue_pop (queue);
GIMP_LAYER_GET_CLASS (layer)->transform (layer, context, matrix, direction,
interpolation_type,
clip_result,
progress);
if (layer->mask)
{
if (queue)
gimp_object_queue_pop (queue);
gimp_item_transform (GIMP_ITEM (layer->mask), context,
matrix, direction,
interpolation_type,
clip_result, progress);
}
g_clear_object (&queue);
}
static void
gimp_layer_to_selection (GimpItem *item,
GimpChannelOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y)
{
GimpLayer *layer = GIMP_LAYER (item);
GimpImage *image = gimp_item_get_image (item);
gimp_channel_select_alpha (gimp_image_get_mask (image),
GIMP_DRAWABLE (layer),
op,
feather, feather_radius_x, feather_radius_y);
}
static void
gimp_layer_alpha_changed (GimpDrawable *drawable)
{
if (GIMP_DRAWABLE_CLASS (parent_class)->alpha_changed)
GIMP_DRAWABLE_CLASS (parent_class)->alpha_changed (drawable);
/* When we add/remove alpha, whatever cached color transforms in
* view renderers need to be recreated because they cache the wrong
* lcms formats. See bug 478528.
*/
gimp_color_managed_profile_changed (GIMP_COLOR_MANAGED (drawable));
}
static gint64
gimp_layer_estimate_memsize (GimpDrawable *drawable,
GimpComponentType component_type,
gint width,
gint height)
{
GimpLayer *layer = GIMP_LAYER (drawable);
gint64 memsize = 0;
if (layer->mask)
memsize += gimp_drawable_estimate_memsize (GIMP_DRAWABLE (layer->mask),
component_type,
width, height);
return memsize +
GIMP_DRAWABLE_CLASS (parent_class)->estimate_memsize (drawable,
component_type,
width, height);
}
static void
gimp_layer_convert_type (GimpDrawable *drawable,
GimpImage *dest_image,
const Babl *new_format,
GimpColorProfile *src_profile,
GimpColorProfile *dest_profile,
GeglDitherMethod layer_dither_type,
GeglDitherMethod mask_dither_type,
gboolean push_undo,
GimpProgress *progress)
{
GimpLayer *layer = GIMP_LAYER (drawable);
GimpObjectQueue *queue = NULL;
const Babl *dest_space;
const Babl *space_format;
gboolean convert_mask;
convert_mask = layer->mask &&
gimp_babl_format_get_precision (new_format) !=
gimp_drawable_get_precision (GIMP_DRAWABLE (layer->mask));
if (progress && convert_mask)
{
GimpLayerMask *mask;
queue = gimp_object_queue_new (progress);
progress = GIMP_PROGRESS (queue);
/* temporarily set layer->mask to NULL, so that its size won't be counted
* when pushing the layer to the queue.
*/
mask = layer->mask;
layer->mask = NULL;
gimp_object_queue_push (queue, layer);
gimp_object_queue_push (queue, mask);
layer->mask = mask;
}
if (queue)
gimp_object_queue_pop (queue);
/* when called with a dest_profile, always use the space from that
* profile, we can't use gimp_image_get_layer_space() during an
* image type or precision conversion
*/
if (dest_profile)
{
dest_space =
gimp_color_profile_get_space (dest_profile,
GIMP_COLOR_RENDERING_INTENT_RELATIVE_COLORIMETRIC,
NULL);
}
else
{
dest_space = gimp_image_get_layer_space (dest_image);
}
space_format = babl_format_with_space ((const gchar *) new_format,
dest_space);
GIMP_LAYER_GET_CLASS (layer)->convert_type (layer, dest_image, space_format,
src_profile, dest_profile,
layer_dither_type,
mask_dither_type, push_undo,
progress);
if (convert_mask)
{
if (queue)
gimp_object_queue_pop (queue);
gimp_drawable_convert_type (GIMP_DRAWABLE (layer->mask), dest_image,
GIMP_GRAY,
gimp_babl_format_get_precision (new_format),
gimp_drawable_has_alpha (GIMP_DRAWABLE (layer->mask)),
NULL, NULL,
layer_dither_type, mask_dither_type,
push_undo, progress);
}
g_clear_object (&queue);
}
static void
gimp_layer_invalidate_boundary (GimpDrawable *drawable)
{
GimpLayer *layer = GIMP_LAYER (drawable);
GimpImage *image;
GimpChannel *mask;
if (! (image = gimp_item_get_image (GIMP_ITEM (layer))))
return;
/* Turn the current selection off */
gimp_image_selection_invalidate (image);
/* get the selection mask channel */
mask = gimp_image_get_mask (image);
/* Only bother with the bounds if there is a selection */
if (! gimp_channel_is_empty (mask))
{
mask->bounds_known = FALSE;
mask->boundary_known = FALSE;
}
if (gimp_layer_is_floating_sel (layer))
floating_sel_invalidate (layer);
}
static void
gimp_layer_get_active_components (GimpDrawable *drawable,
gboolean *active)
{
GimpLayer *layer = GIMP_LAYER (drawable);
GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
const Babl *format = gimp_drawable_get_format (drawable);
/* first copy the image active channels */
gimp_image_get_active_array (image, active);
if (gimp_drawable_has_alpha (drawable) && layer->lock_alpha)
active[babl_format_get_n_components (format) - 1] = FALSE;
}
static GimpComponentMask
gimp_layer_get_active_mask (GimpDrawable *drawable)
{
GimpLayer *layer = GIMP_LAYER (drawable);
GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
GimpComponentMask mask = gimp_image_get_active_mask (image);
if (gimp_drawable_has_alpha (drawable) && layer->lock_alpha)
mask &= ~GIMP_COMPONENT_MASK_ALPHA;
return mask;
}
static void
gimp_layer_set_buffer (GimpDrawable *drawable,
gboolean push_undo,
const gchar *undo_desc,
GeglBuffer *buffer,
gint offset_x,
gint offset_y)
{
GeglBuffer *old_buffer = gimp_drawable_get_buffer (drawable);
gint old_trc = -1;
if (old_buffer)
old_trc = gimp_drawable_get_trc (drawable);
GIMP_DRAWABLE_CLASS (parent_class)->set_buffer (drawable,
push_undo, undo_desc,
buffer,
offset_x, offset_y);
if (gimp_filter_peek_node (GIMP_FILTER (drawable)))
{
if (gimp_drawable_get_trc (drawable) != old_trc)
gimp_layer_update_mode_node (GIMP_LAYER (drawable));
}
}
static GimpColorProfile *
gimp_layer_get_color_profile (GimpColorManaged *managed)
{
GimpImage *image = gimp_item_get_image (GIMP_ITEM (managed));
return gimp_color_managed_get_color_profile (GIMP_COLOR_MANAGED (image));
}
static gdouble
gimp_layer_get_opacity_at (GimpPickable *pickable,
gint x,
gint y)
{
GimpLayer *layer = GIMP_LAYER (pickable);
gdouble value = GIMP_OPACITY_TRANSPARENT;
if (x >= 0 && x < gimp_item_get_width (GIMP_ITEM (layer)) &&
y >= 0 && y < gimp_item_get_height (GIMP_ITEM (layer)) &&
gimp_item_is_visible (GIMP_ITEM (layer)))
{
if (! gimp_drawable_has_alpha (GIMP_DRAWABLE (layer)))
{
value = GIMP_OPACITY_OPAQUE;
}
else
{
gegl_buffer_sample (gimp_drawable_get_buffer (GIMP_DRAWABLE (layer)),
x, y, NULL, &value, babl_format ("A double"),
GEGL_SAMPLER_NEAREST, GEGL_ABYSS_NONE);
}
if (gimp_layer_get_mask (layer) &&
gimp_layer_get_apply_mask (layer))
{
gdouble mask_value;
mask_value = gimp_pickable_get_opacity_at (GIMP_PICKABLE (layer->mask),
x, y);
value *= mask_value;
}
}
return value;
}
static void
gimp_layer_pixel_to_srgb (GimpPickable *pickable,
const Babl *format,
gpointer pixel,
GimpRGB *color)
{
GimpImage *image = gimp_item_get_image (GIMP_ITEM (pickable));
gimp_pickable_pixel_to_srgb (GIMP_PICKABLE (image), format, pixel, color);
}
static void
gimp_layer_srgb_to_pixel (GimpPickable *pickable,
const GimpRGB *color,
const Babl *format,
gpointer pixel)
{
GimpImage *image = gimp_item_get_image (GIMP_ITEM (pickable));
gimp_pickable_srgb_to_pixel (GIMP_PICKABLE (image), color, format, pixel);
}
static void
gimp_layer_real_translate (GimpLayer *layer,
gint offset_x,
gint offset_y)
{
/* update the old region */
gimp_drawable_update (GIMP_DRAWABLE (layer), 0, 0, -1, -1);
/* invalidate the selection boundary because of a layer modification */
gimp_drawable_invalidate_boundary (GIMP_DRAWABLE (layer));
GIMP_ITEM_CLASS (parent_class)->translate (GIMP_ITEM (layer),
offset_x, offset_y,
FALSE);
/* update the new region */
gimp_drawable_update (GIMP_DRAWABLE (layer), 0, 0, -1, -1);
}
static void
gimp_layer_real_scale (GimpLayer *layer,
gint new_width,
gint new_height,
gint new_offset_x,
gint new_offset_y,
GimpInterpolationType interpolation_type,
GimpProgress *progress)
{
GIMP_ITEM_CLASS (parent_class)->scale (GIMP_ITEM (layer),
new_width, new_height,
new_offset_x, new_offset_y,
interpolation_type, progress);
}
static void
gimp_layer_real_resize (GimpLayer *layer,
GimpContext *context,
GimpFillType fill_type,
gint new_width,
gint new_height,
gint offset_x,
gint offset_y)
{
if (fill_type == GIMP_FILL_TRANSPARENT &&
! gimp_drawable_has_alpha (GIMP_DRAWABLE (layer)))
{
fill_type = GIMP_FILL_BACKGROUND;
}
GIMP_ITEM_CLASS (parent_class)->resize (GIMP_ITEM (layer),
context, fill_type,
new_width, new_height,
offset_x, offset_y);
}
static void
gimp_layer_real_flip (GimpLayer *layer,
GimpContext *context,
GimpOrientationType flip_type,
gdouble axis,
gboolean clip_result)
{
GIMP_ITEM_CLASS (parent_class)->flip (GIMP_ITEM (layer),
context, flip_type, axis, clip_result);
}
static void
gimp_layer_real_rotate (GimpLayer *layer,
GimpContext *context,
GimpRotationType rotate_type,
gdouble center_x,
gdouble center_y,
gboolean clip_result)
{
GIMP_ITEM_CLASS (parent_class)->rotate (GIMP_ITEM (layer),
context, rotate_type,
center_x, center_y,
clip_result);
}
static void
gimp_layer_real_transform (GimpLayer *layer,
GimpContext *context,
const GimpMatrix3 *matrix,
GimpTransformDirection direction,
GimpInterpolationType interpolation_type,
GimpTransformResize clip_result,
GimpProgress *progress)
{
GIMP_ITEM_CLASS (parent_class)->transform (GIMP_ITEM (layer),
context, matrix, direction,
interpolation_type,
clip_result,
progress);
}
static void
gimp_layer_real_convert_type (GimpLayer *layer,
GimpImage *dest_image,
const Babl *new_format,
GimpColorProfile *src_profile,
GimpColorProfile *dest_profile,
GeglDitherMethod layer_dither_type,
GeglDitherMethod mask_dither_type,
gboolean push_undo,
GimpProgress *progress)
{
GimpDrawable *drawable = GIMP_DRAWABLE (layer);
GeglBuffer *src_buffer;
GeglBuffer *dest_buffer;
if (layer_dither_type == GEGL_DITHER_NONE)
{
src_buffer = g_object_ref (gimp_drawable_get_buffer (drawable));
}
else
{
gint bits;
src_buffer =
gegl_buffer_new (GEGL_RECTANGLE (0, 0,
gimp_item_get_width (GIMP_ITEM (layer)),
gimp_item_get_height (GIMP_ITEM (layer))),
gimp_drawable_get_format (drawable));
bits = (babl_format_get_bytes_per_pixel (new_format) * 8 /
babl_format_get_n_components (new_format));
gimp_gegl_apply_dither (gimp_drawable_get_buffer (drawable),
NULL, NULL,
src_buffer, 1 << bits, layer_dither_type);
}
dest_buffer =
gegl_buffer_new (GEGL_RECTANGLE (0, 0,
gimp_item_get_width (GIMP_ITEM (layer)),
gimp_item_get_height (GIMP_ITEM (layer))),
new_format);
if (dest_profile)
{
if (! src_profile)
src_profile =
gimp_color_managed_get_color_profile (GIMP_COLOR_MANAGED (layer));
gimp_gegl_convert_color_profile (src_buffer, NULL, src_profile,
dest_buffer, NULL, dest_profile,
GIMP_COLOR_RENDERING_INTENT_PERCEPTUAL,
TRUE, progress);
}
else
{
gimp_gegl_buffer_copy (src_buffer, NULL, GEGL_ABYSS_NONE,
dest_buffer, NULL);
}
gimp_drawable_set_buffer (drawable, push_undo, NULL, dest_buffer);
g_object_unref (src_buffer);
g_object_unref (dest_buffer);
}
static void
gimp_layer_real_get_effective_mode (GimpLayer *layer,
GimpLayerMode *mode,
GimpLayerColorSpace *blend_space,
GimpLayerColorSpace *composite_space,
GimpLayerCompositeMode *composite_mode)
{
*mode = gimp_layer_get_mode (layer);
*blend_space = gimp_layer_get_real_blend_space (layer);
*composite_space = gimp_layer_get_real_composite_space (layer);
*composite_mode = gimp_layer_get_real_composite_mode (layer);
}
static gboolean
gimp_layer_real_get_excludes_backdrop (GimpLayer *layer)
{
GimpLayerCompositeRegion included_region;
included_region = gimp_layer_mode_get_included_region (layer->mode,
layer->effective_composite_mode);
return ! (included_region & GIMP_LAYER_COMPOSITE_REGION_DESTINATION);
}
static void
gimp_layer_layer_mask_update (GimpDrawable *drawable,
gint x,
gint y,
gint width,
gint height,
GimpLayer *layer)
{
if (gimp_layer_get_apply_mask (layer) ||
gimp_layer_get_show_mask (layer))
{
gimp_drawable_update (GIMP_DRAWABLE (layer),
x, y, width, height);
}
}
/* public functions */
void
gimp_layer_fix_format_space (GimpLayer *layer,
gboolean copy_buffer,
gboolean push_undo)
{
GimpDrawable *drawable;
const Babl *format;
g_return_if_fail (GIMP_IS_LAYER (layer));
g_return_if_fail (push_undo == FALSE || copy_buffer == TRUE);
drawable = GIMP_DRAWABLE (layer);
format = gimp_image_get_layer_format (gimp_item_get_image (GIMP_ITEM (layer)),
gimp_drawable_has_alpha (drawable));
if (format != gimp_drawable_get_format (drawable))
{
gimp_drawable_set_format (drawable, format, copy_buffer, push_undo);
}
}
GimpLayer *
gimp_layer_get_parent (GimpLayer *layer)
{
g_return_val_if_fail (GIMP_IS_LAYER (layer), NULL);
return GIMP_LAYER (gimp_viewable_get_parent (GIMP_VIEWABLE (layer)));
}
GimpLayerMask *
gimp_layer_get_mask (GimpLayer *layer)
{
g_return_val_if_fail (GIMP_IS_LAYER (layer), NULL);
return layer->mask;
}
GimpLayerMask *
gimp_layer_add_mask (GimpLayer *layer,
GimpLayerMask *mask,
gboolean push_undo,
GError **error)
{
GimpImage *image;
g_return_val_if_fail (GIMP_IS_LAYER (layer), NULL);
g_return_val_if_fail (GIMP_IS_LAYER_MASK (mask), NULL);
g_return_val_if_fail (gimp_item_get_image (GIMP_ITEM (layer)) ==
gimp_item_get_image (GIMP_ITEM (mask)), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
if (! gimp_item_is_attached (GIMP_ITEM (layer)))
push_undo = FALSE;
image = gimp_item_get_image (GIMP_ITEM (layer));
if (layer->mask)
{
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
_("Unable to add a layer mask since "
"the layer already has one."));
return NULL;
}
if ((gimp_item_get_width (GIMP_ITEM (layer)) !=
gimp_item_get_width (GIMP_ITEM (mask))) ||
(gimp_item_get_height (GIMP_ITEM (layer)) !=
gimp_item_get_height (GIMP_ITEM (mask))))
{
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
_("Cannot add layer mask of different "
"dimensions than specified layer."));
return NULL;
}
if (push_undo)
gimp_image_undo_push_layer_mask_add (image, C_("undo-type", "Add Layer Mask"),
layer, mask);
layer->mask = g_object_ref_sink (mask);
layer->apply_mask = TRUE;
layer->edit_mask = TRUE;
layer->show_mask = FALSE;
gimp_layer_mask_set_layer (mask, layer);
if (gimp_filter_peek_node (GIMP_FILTER (layer)))
{
GeglNode *mode_node;
GeglNode *mask;
mode_node = gimp_drawable_get_mode_node (GIMP_DRAWABLE (layer));
mask = gimp_drawable_get_source_node (GIMP_DRAWABLE (layer->mask));
gegl_node_connect_to (mask, "output",
layer->mask_offset_node, "input");
if (layer->show_mask)
{
gegl_node_connect_to (layer->mask_offset_node, "output",
mode_node, "aux");
}
else
{
gegl_node_connect_to (layer->mask_offset_node, "output",
mode_node, "aux2");
}
gimp_layer_update_mode_node (layer);
}
if (gimp_layer_get_apply_mask (layer) ||
gimp_layer_get_show_mask (layer))
{
gimp_drawable_update (GIMP_DRAWABLE (layer), 0, 0, -1, -1);
}
g_signal_connect (mask, "update",
G_CALLBACK (gimp_layer_layer_mask_update),
layer);
g_signal_emit (layer, layer_signals[MASK_CHANGED], 0);
g_object_notify (G_OBJECT (layer), "mask");
/* if the mask came from the undo stack, reset its "removed" state */
if (gimp_item_is_removed (GIMP_ITEM (mask)))
gimp_item_unset_removed (GIMP_ITEM (mask));
return layer->mask;
}
GimpLayerMask *
gimp_layer_create_mask (GimpLayer *layer,
GimpAddMaskType add_mask_type,
GimpChannel *channel)
{
GimpDrawable *drawable;
GimpItem *item;
GimpLayerMask *mask;
GimpImage *image;
gchar *mask_name;
GimpRGB black = { 0.0, 0.0, 0.0, GIMP_OPACITY_OPAQUE };
g_return_val_if_fail (GIMP_IS_LAYER (layer), NULL);
g_return_val_if_fail (add_mask_type != GIMP_ADD_MASK_CHANNEL ||
GIMP_IS_CHANNEL (channel), NULL);
drawable = GIMP_DRAWABLE (layer);
item = GIMP_ITEM (layer);
image = gimp_item_get_image (item);
mask_name = g_strdup_printf (_("%s mask"),
gimp_object_get_name (layer));
mask = gimp_layer_mask_new (image,
gimp_item_get_width (item),
gimp_item_get_height (item),
mask_name, &black);
g_free (mask_name);
switch (add_mask_type)
{
case GIMP_ADD_MASK_WHITE:
gimp_channel_all (GIMP_CHANNEL (mask), FALSE);
break;
case GIMP_ADD_MASK_BLACK:
gimp_channel_clear (GIMP_CHANNEL (mask), NULL, FALSE);
break;
case GIMP_ADD_MASK_ALPHA:
case GIMP_ADD_MASK_ALPHA_TRANSFER:
if (gimp_drawable_has_alpha (drawable))
{
GeglBuffer *dest_buffer;
const Babl *component_format;
dest_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (mask));
component_format =
gimp_image_get_component_format (image, GIMP_CHANNEL_ALPHA);
gegl_buffer_set_format (dest_buffer, component_format);
gimp_gegl_buffer_copy (gimp_drawable_get_buffer (drawable), NULL,
GEGL_ABYSS_NONE,
dest_buffer, NULL);
gegl_buffer_set_format (dest_buffer, NULL);
if (add_mask_type == GIMP_ADD_MASK_ALPHA_TRANSFER)
{
gimp_drawable_push_undo (drawable,
C_("undo-type", "Transfer Alpha to Mask"),
NULL,
0, 0,
gimp_item_get_width (item),
gimp_item_get_height (item));
gimp_gegl_apply_set_alpha (gimp_drawable_get_buffer (drawable),
NULL, NULL,
gimp_drawable_get_buffer (drawable),
1.0);
}
}
break;
case GIMP_ADD_MASK_SELECTION:
case GIMP_ADD_MASK_CHANNEL:
{
gboolean channel_empty;
gint offset_x, offset_y;
gint copy_x, copy_y;
gint copy_width, copy_height;
if (add_mask_type == GIMP_ADD_MASK_SELECTION)
channel = GIMP_CHANNEL (gimp_image_get_mask (image));
channel_empty = gimp_channel_is_empty (channel);
gimp_item_get_offset (item, &offset_x, &offset_y);
gimp_rectangle_intersect (0, 0,
gimp_image_get_width (image),
gimp_image_get_height (image),
offset_x, offset_y,
gimp_item_get_width (item),
gimp_item_get_height (item),
&copy_x, &copy_y,
&copy_width, &copy_height);
if (copy_width < gimp_item_get_width (item) ||
copy_height < gimp_item_get_height (item) ||
channel_empty)
gimp_channel_clear (GIMP_CHANNEL (mask), NULL, FALSE);
if ((copy_width || copy_height) && ! channel_empty)
{
GeglBuffer *src;
GeglBuffer *dest;
const Babl *format;
src = gimp_drawable_get_buffer (GIMP_DRAWABLE (channel));
dest = gimp_drawable_get_buffer (GIMP_DRAWABLE (mask));
format = gegl_buffer_get_format (src);
/* make sure no gamma conversion happens */
gegl_buffer_set_format (dest, format);
gimp_gegl_buffer_copy (src,
GEGL_RECTANGLE (copy_x, copy_y,
copy_width, copy_height),
GEGL_ABYSS_NONE,
dest,
GEGL_RECTANGLE (copy_x - offset_x,
copy_y - offset_y,
0, 0));
gegl_buffer_set_format (dest, NULL);
GIMP_CHANNEL (mask)->bounds_known = FALSE;
}
}
break;
case GIMP_ADD_MASK_COPY:
{
GeglBuffer *src_buffer;
GeglBuffer *dest_buffer;
if (! gimp_drawable_is_gray (drawable))
{
const Babl *copy_format =
gimp_image_get_format (image, GIMP_GRAY,
gimp_drawable_get_precision (drawable),
gimp_drawable_has_alpha (drawable),
NULL);
src_buffer =
gegl_buffer_new (GEGL_RECTANGLE (0, 0,
gimp_item_get_width (item),
gimp_item_get_height (item)),
copy_format);
gimp_gegl_buffer_copy (gimp_drawable_get_buffer (drawable), NULL,
GEGL_ABYSS_NONE,
src_buffer, NULL);
}
else
{
src_buffer = gimp_drawable_get_buffer (drawable);
g_object_ref (src_buffer);
}
dest_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (mask));
if (gimp_drawable_has_alpha (drawable))
{
GimpRGB background;
gimp_rgba_set (&background, 0.0, 0.0, 0.0, 0.0);
gimp_gegl_apply_flatten (src_buffer, NULL, NULL,
dest_buffer, &background, NULL,
GIMP_LAYER_COLOR_SPACE_RGB_LINEAR);
}
else
{
gimp_gegl_buffer_copy (src_buffer, NULL, GEGL_ABYSS_NONE,
dest_buffer, NULL);
}
g_object_unref (src_buffer);
}
GIMP_CHANNEL (mask)->bounds_known = FALSE;
break;
}
return mask;
}
void
gimp_layer_apply_mask (GimpLayer *layer,
GimpMaskApplyMode mode,
gboolean push_undo)
{
GimpItem *item;
GimpImage *image;
GimpLayerMask *mask;
gboolean view_changed = FALSE;
g_return_if_fail (GIMP_IS_LAYER (layer));
mask = gimp_layer_get_mask (layer);
if (! mask)
return;
/* APPLY can not be done to group layers */
g_return_if_fail (! gimp_viewable_get_children (GIMP_VIEWABLE (layer)) ||
mode == GIMP_MASK_DISCARD);
/* APPLY can only be done to layers with an alpha channel */
g_return_if_fail (gimp_drawable_has_alpha (GIMP_DRAWABLE (layer)) ||
mode == GIMP_MASK_DISCARD || push_undo == TRUE);
item = GIMP_ITEM (layer);
image = gimp_item_get_image (item);
if (! image)
return;
if (push_undo)
{
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_LAYER_APPLY_MASK,
(mode == GIMP_MASK_APPLY) ?
C_("undo-type", "Apply Layer Mask") :
C_("undo-type", "Delete Layer Mask"));
gimp_image_undo_push_layer_mask_show (image, NULL, layer);
gimp_image_undo_push_layer_mask_apply (image, NULL, layer);
gimp_image_undo_push_layer_mask_remove (image, NULL, layer, mask);
if (mode == GIMP_MASK_APPLY &&
! gimp_drawable_has_alpha (GIMP_DRAWABLE (layer)))
{
gimp_layer_add_alpha (layer);
}
}
/* check if applying the mask changes the projection */
if (gimp_layer_get_show_mask (layer) ||
(mode == GIMP_MASK_APPLY && ! gimp_layer_get_apply_mask (layer)) ||
(mode == GIMP_MASK_DISCARD && gimp_layer_get_apply_mask (layer)))
{
view_changed = TRUE;
}
if (mode == GIMP_MASK_APPLY)
{
GeglBuffer *mask_buffer;
GeglBuffer *dest_buffer;
if (push_undo)
gimp_drawable_push_undo (GIMP_DRAWABLE (layer), NULL,
NULL,
0, 0,
gimp_item_get_width (item),
gimp_item_get_height (item));
/* Combine the current layer's alpha channel and the mask */
mask_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (mask));
dest_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (layer));
gimp_gegl_apply_opacity (gimp_drawable_get_buffer (GIMP_DRAWABLE (layer)),
NULL, NULL, dest_buffer,
mask_buffer, 0, 0, 1.0);
}
g_signal_handlers_disconnect_by_func (mask,
gimp_layer_layer_mask_update,
layer);
gimp_item_removed (GIMP_ITEM (mask));
g_object_unref (mask);
layer->mask = NULL;
if (push_undo)
gimp_image_undo_group_end (image);
if (gimp_filter_peek_node (GIMP_FILTER (layer)))
{
GeglNode *mode_node;
mode_node = gimp_drawable_get_mode_node (GIMP_DRAWABLE (layer));
if (layer->show_mask)
{
gegl_node_connect_to (layer->layer_offset_node, "output",
mode_node, "aux");
}
else
{
gegl_node_disconnect (mode_node, "aux2");
}
gimp_layer_update_mode_node (layer);
}
/* If applying actually changed the view */
if (view_changed)
{
gimp_drawable_update (GIMP_DRAWABLE (layer), 0, 0, -1, -1);
}
else
{
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (layer));
}
g_signal_emit (layer, layer_signals[MASK_CHANGED], 0);
g_object_notify (G_OBJECT (layer), "mask");
}
void
gimp_layer_set_apply_mask (GimpLayer *layer,
gboolean apply,
gboolean push_undo)
{
g_return_if_fail (GIMP_IS_LAYER (layer));
g_return_if_fail (layer->mask != NULL);
if (layer->apply_mask != apply)
{
GimpImage *image = gimp_item_get_image (GIMP_ITEM (layer));
if (push_undo && gimp_item_is_attached (GIMP_ITEM (layer)))
gimp_image_undo_push_layer_mask_apply (image,
apply ?
C_("undo-type", "Enable Layer Mask") :
C_("undo-type", "Disable Layer Mask"),
layer);
layer->apply_mask = apply ? TRUE : FALSE;
if (gimp_filter_peek_node (GIMP_FILTER (layer)) &&
! gimp_layer_get_show_mask (layer))
{
GeglNode *mode_node;
mode_node = gimp_drawable_get_mode_node (GIMP_DRAWABLE (layer));
if (layer->apply_mask)
{
gegl_node_connect_to (layer->mask_offset_node, "output",
mode_node, "aux2");
}
else
{
gegl_node_disconnect (mode_node, "aux2");
}
}
gimp_drawable_update (GIMP_DRAWABLE (layer), 0, 0, -1, -1);
g_signal_emit (layer, layer_signals[APPLY_MASK_CHANGED], 0);
}
}
gboolean
gimp_layer_get_apply_mask (GimpLayer *layer)
{
g_return_val_if_fail (GIMP_IS_LAYER (layer), FALSE);
g_return_val_if_fail (layer->mask, FALSE);
return layer->apply_mask;
}
void
gimp_layer_set_edit_mask (GimpLayer *layer,
gboolean edit)
{
g_return_if_fail (GIMP_IS_LAYER (layer));
g_return_if_fail (layer->mask != NULL);
if (layer->edit_mask != edit)
{
layer->edit_mask = edit ? TRUE : FALSE;
g_signal_emit (layer, layer_signals[EDIT_MASK_CHANGED], 0);
}
}
gboolean
gimp_layer_get_edit_mask (GimpLayer *layer)
{
g_return_val_if_fail (GIMP_IS_LAYER (layer), FALSE);
g_return_val_if_fail (layer->mask, FALSE);
return layer->edit_mask;
}
void
gimp_layer_set_show_mask (GimpLayer *layer,
gboolean show,
gboolean push_undo)
{
g_return_if_fail (GIMP_IS_LAYER (layer));
g_return_if_fail (layer->mask != NULL);
if (layer->show_mask != show)
{
GimpImage *image = gimp_item_get_image (GIMP_ITEM (layer));
if (push_undo)
gimp_image_undo_push_layer_mask_show (image,
C_("undo-type", "Show Layer Mask"),
layer);
layer->show_mask = show ? TRUE : FALSE;
if (gimp_filter_peek_node (GIMP_FILTER (layer)))
{
GeglNode *mode_node;
mode_node = gimp_drawable_get_mode_node (GIMP_DRAWABLE (layer));
if (layer->show_mask)
{
gegl_node_disconnect (mode_node, "aux2");
gegl_node_connect_to (layer->mask_offset_node, "output",
mode_node, "aux");
}
else
{
gegl_node_connect_to (layer->layer_offset_node, "output",
mode_node, "aux");
if (gimp_layer_get_apply_mask (layer))
{
gegl_node_connect_to (layer->mask_offset_node, "output",
mode_node, "aux2");
}
}
gimp_layer_update_mode_node (layer);
}
gimp_drawable_update (GIMP_DRAWABLE (layer), 0, 0, -1, -1);
g_signal_emit (layer, layer_signals[SHOW_MASK_CHANGED], 0);
}
}
gboolean
gimp_layer_get_show_mask (GimpLayer *layer)
{
g_return_val_if_fail (GIMP_IS_LAYER (layer), FALSE);
g_return_val_if_fail (layer->mask, FALSE);
return layer->show_mask;
}
void
gimp_layer_add_alpha (GimpLayer *layer)
{
GimpItem *item;
GimpDrawable *drawable;
GeglBuffer *new_buffer;
g_return_if_fail (GIMP_IS_LAYER (layer));
if (gimp_drawable_has_alpha (GIMP_DRAWABLE (layer)))
return;
item = GIMP_ITEM (layer);
drawable = GIMP_DRAWABLE (layer);
new_buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
gimp_item_get_width (item),
gimp_item_get_height (item)),
gimp_drawable_get_format_with_alpha (drawable));
gimp_gegl_buffer_copy (
gimp_drawable_get_buffer (drawable), NULL, GEGL_ABYSS_NONE,
new_buffer, NULL);
gimp_drawable_set_buffer (GIMP_DRAWABLE (layer),
gimp_item_is_attached (GIMP_ITEM (layer)),
C_("undo-type", "Add Alpha Channel"),
new_buffer);
g_object_unref (new_buffer);
}
void
gimp_layer_remove_alpha (GimpLayer *layer,
GimpContext *context)
{
GeglBuffer *new_buffer;
GimpRGB background;
g_return_if_fail (GIMP_IS_LAYER (layer));
g_return_if_fail (GIMP_IS_CONTEXT (context));
if (! gimp_drawable_has_alpha (GIMP_DRAWABLE (layer)))
return;
new_buffer =
gegl_buffer_new (GEGL_RECTANGLE (0, 0,
gimp_item_get_width (GIMP_ITEM (layer)),
gimp_item_get_height (GIMP_ITEM (layer))),
gimp_drawable_get_format_without_alpha (GIMP_DRAWABLE (layer)));
gimp_context_get_background (context, &background);
gimp_pickable_srgb_to_image_color (GIMP_PICKABLE (layer),
&background, &background);
gimp_gegl_apply_flatten (gimp_drawable_get_buffer (GIMP_DRAWABLE (layer)),
NULL, NULL,
new_buffer, &background,
gimp_drawable_get_space (GIMP_DRAWABLE (layer)),
gimp_layer_get_real_composite_space (layer));
gimp_drawable_set_buffer (GIMP_DRAWABLE (layer),
gimp_item_is_attached (GIMP_ITEM (layer)),
C_("undo-type", "Remove Alpha Channel"),
new_buffer);
g_object_unref (new_buffer);
}
void
gimp_layer_resize_to_image (GimpLayer *layer,
GimpContext *context,
GimpFillType fill_type)
{
GimpImage *image;
gint offset_x;
gint offset_y;
g_return_if_fail (GIMP_IS_LAYER (layer));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (layer)));
g_return_if_fail (GIMP_IS_CONTEXT (context));
image = gimp_item_get_image (GIMP_ITEM (layer));
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_ITEM_RESIZE,
C_("undo-type", "Layer to Image Size"));
gimp_item_get_offset (GIMP_ITEM (layer), &offset_x, &offset_y);
gimp_item_resize (GIMP_ITEM (layer), context, fill_type,
gimp_image_get_width (image),
gimp_image_get_height (image),
offset_x, offset_y);
gimp_image_undo_group_end (image);
}
/**********************/
/* access functions */
/**********************/
GimpDrawable *
gimp_layer_get_floating_sel_drawable (GimpLayer *layer)
{
g_return_val_if_fail (GIMP_IS_LAYER (layer), NULL);
return layer->fs.drawable;
}
void
gimp_layer_set_floating_sel_drawable (GimpLayer *layer,
GimpDrawable *drawable)
{
g_return_if_fail (GIMP_IS_LAYER (layer));
g_return_if_fail (drawable == NULL || GIMP_IS_DRAWABLE (drawable));
if (g_set_object (&layer->fs.drawable, drawable))
{
if (layer->fs.segs)
{
g_free (layer->fs.segs);
layer->fs.segs = NULL;
layer->fs.num_segs = 0;
}
g_object_notify (G_OBJECT (layer), "floating-selection");
}
}
gboolean
gimp_layer_is_floating_sel (GimpLayer *layer)
{
g_return_val_if_fail (GIMP_IS_LAYER (layer), FALSE);
return (gimp_layer_get_floating_sel_drawable (layer) != NULL);
}
void
gimp_layer_set_opacity (GimpLayer *layer,
gdouble opacity,
gboolean push_undo)
{
g_return_if_fail (GIMP_IS_LAYER (layer));
opacity = CLAMP (opacity, GIMP_OPACITY_TRANSPARENT, GIMP_OPACITY_OPAQUE);
if (layer->opacity != opacity)
{
if (push_undo && gimp_item_is_attached (GIMP_ITEM (layer)))
{
GimpImage *image = gimp_item_get_image (GIMP_ITEM (layer));
gimp_image_undo_push_layer_opacity (image, NULL, layer);
}
layer->opacity = opacity;
g_signal_emit (layer, layer_signals[OPACITY_CHANGED], 0);
g_object_notify (G_OBJECT (layer), "opacity");
if (gimp_filter_peek_node (GIMP_FILTER (layer)))
gimp_layer_update_mode_node (layer);
gimp_drawable_update (GIMP_DRAWABLE (layer), 0, 0, -1, -1);
}
}
gdouble
gimp_layer_get_opacity (GimpLayer *layer)
{
g_return_val_if_fail (GIMP_IS_LAYER (layer), GIMP_OPACITY_OPAQUE);
return layer->opacity;
}
void
gimp_layer_set_mode (GimpLayer *layer,
GimpLayerMode mode,
gboolean push_undo)
{
g_return_if_fail (GIMP_IS_LAYER (layer));
if (gimp_viewable_get_children (GIMP_VIEWABLE (layer)) == NULL)
{
g_return_if_fail (gimp_layer_mode_get_context (mode) &
GIMP_LAYER_MODE_CONTEXT_LAYER);
}
else
{
g_return_if_fail (gimp_layer_mode_get_context (mode) &
GIMP_LAYER_MODE_CONTEXT_GROUP);
}
if (layer->mode != mode)
{
if (gimp_item_is_attached (GIMP_ITEM (layer)))
{
GimpImage *image = gimp_item_get_image (GIMP_ITEM (layer));
gimp_image_unset_default_new_layer_mode (image);
if (push_undo)
gimp_image_undo_push_layer_mode (image, NULL, layer);
}
g_object_freeze_notify (G_OBJECT (layer));
layer->mode = mode;
g_signal_emit (layer, layer_signals[MODE_CHANGED], 0);
g_object_notify (G_OBJECT (layer), "mode");
/* when changing modes, we always switch to AUTO blend and
* composite in order to avoid confusion
*/
if (layer->blend_space != GIMP_LAYER_COLOR_SPACE_AUTO)
{
layer->blend_space = GIMP_LAYER_COLOR_SPACE_AUTO;
g_signal_emit (layer, layer_signals[BLEND_SPACE_CHANGED], 0);
g_object_notify (G_OBJECT (layer), "blend-space");
}
if (layer->composite_space != GIMP_LAYER_COLOR_SPACE_AUTO)
{
layer->composite_space = GIMP_LAYER_COLOR_SPACE_AUTO;
g_signal_emit (layer, layer_signals[COMPOSITE_SPACE_CHANGED], 0);
g_object_notify (G_OBJECT (layer), "composite-space");
}
if (layer->composite_mode != GIMP_LAYER_COMPOSITE_AUTO)
{
layer->composite_mode = GIMP_LAYER_COMPOSITE_AUTO;
g_signal_emit (layer, layer_signals[COMPOSITE_MODE_CHANGED], 0);
g_object_notify (G_OBJECT (layer), "composite-mode");
}
g_object_thaw_notify (G_OBJECT (layer));
gimp_layer_update_effective_mode (layer);
gimp_layer_update_excludes_backdrop (layer);
}
}
GimpLayerMode
gimp_layer_get_mode (GimpLayer *layer)
{
g_return_val_if_fail (GIMP_IS_LAYER (layer), GIMP_LAYER_MODE_NORMAL);
return layer->mode;
}
void
gimp_layer_set_blend_space (GimpLayer *layer,
GimpLayerColorSpace blend_space,
gboolean push_undo)
{
g_return_if_fail (GIMP_IS_LAYER (layer));
if (! gimp_layer_mode_is_blend_space_mutable (layer->mode))
return;
if (layer->blend_space != blend_space)
{
if (push_undo && gimp_item_is_attached (GIMP_ITEM (layer)))
{
GimpImage *image = gimp_item_get_image (GIMP_ITEM (layer));
gimp_image_undo_push_layer_mode (image, NULL, layer);
}
layer->blend_space = blend_space;
g_signal_emit (layer, layer_signals[BLEND_SPACE_CHANGED], 0);
g_object_notify (G_OBJECT (layer), "blend-space");
gimp_layer_update_effective_mode (layer);
}
}
GimpLayerColorSpace
gimp_layer_get_blend_space (GimpLayer *layer)
{
g_return_val_if_fail (GIMP_IS_LAYER (layer), GIMP_LAYER_COLOR_SPACE_AUTO);
return layer->blend_space;
}
GimpLayerColorSpace
gimp_layer_get_real_blend_space (GimpLayer *layer)
{
g_return_val_if_fail (GIMP_IS_LAYER (layer), GIMP_LAYER_COLOR_SPACE_RGB_LINEAR);
if (layer->blend_space == GIMP_LAYER_COLOR_SPACE_AUTO)
return gimp_layer_mode_get_blend_space (layer->mode);
else
return layer->blend_space;
}
void
gimp_layer_set_composite_space (GimpLayer *layer,
GimpLayerColorSpace composite_space,
gboolean push_undo)
{
g_return_if_fail (GIMP_IS_LAYER (layer));
if (! gimp_layer_mode_is_composite_space_mutable (layer->mode))
return;
if (layer->composite_space != composite_space)
{
if (push_undo && gimp_item_is_attached (GIMP_ITEM (layer)))
{
GimpImage *image = gimp_item_get_image (GIMP_ITEM (layer));
gimp_image_undo_push_layer_mode (image, NULL, layer);
}
layer->composite_space = composite_space;
g_signal_emit (layer, layer_signals[COMPOSITE_SPACE_CHANGED], 0);
g_object_notify (G_OBJECT (layer), "composite-space");
gimp_layer_update_effective_mode (layer);
}
}
GimpLayerColorSpace
gimp_layer_get_composite_space (GimpLayer *layer)
{
g_return_val_if_fail (GIMP_IS_LAYER (layer), GIMP_LAYER_COLOR_SPACE_AUTO);
return layer->composite_space;
}
GimpLayerColorSpace
gimp_layer_get_real_composite_space (GimpLayer *layer)
{
g_return_val_if_fail (GIMP_IS_LAYER (layer), GIMP_LAYER_COLOR_SPACE_RGB_LINEAR);
if (layer->composite_space == GIMP_LAYER_COLOR_SPACE_AUTO)
return gimp_layer_mode_get_composite_space (layer->mode);
else
return layer->composite_space;
}
void
gimp_layer_set_composite_mode (GimpLayer *layer,
GimpLayerCompositeMode composite_mode,
gboolean push_undo)
{
g_return_if_fail (GIMP_IS_LAYER (layer));
if (! gimp_layer_mode_is_composite_mode_mutable (layer->mode))
return;
if (layer->composite_mode != composite_mode)
{
if (push_undo && gimp_item_is_attached (GIMP_ITEM (layer)))
{
GimpImage *image = gimp_item_get_image (GIMP_ITEM (layer));
gimp_image_undo_push_layer_mode (image, NULL, layer);
}
layer->composite_mode = composite_mode;
g_signal_emit (layer, layer_signals[COMPOSITE_MODE_CHANGED], 0);
g_object_notify (G_OBJECT (layer), "composite-mode");
gimp_layer_update_effective_mode (layer);
gimp_layer_update_excludes_backdrop (layer);
}
}
GimpLayerCompositeMode
gimp_layer_get_composite_mode (GimpLayer *layer)
{
g_return_val_if_fail (GIMP_IS_LAYER (layer), GIMP_LAYER_COMPOSITE_AUTO);
return layer->composite_mode;
}
GimpLayerCompositeMode
gimp_layer_get_real_composite_mode (GimpLayer *layer)
{
g_return_val_if_fail (GIMP_IS_LAYER (layer), GIMP_LAYER_COMPOSITE_UNION);
if (layer->composite_mode == GIMP_LAYER_COMPOSITE_AUTO)
return gimp_layer_mode_get_composite_mode (layer->mode);
else
return layer->composite_mode;
}
void
gimp_layer_get_effective_mode (GimpLayer *layer,
GimpLayerMode *mode,
GimpLayerColorSpace *blend_space,
GimpLayerColorSpace *composite_space,
GimpLayerCompositeMode *composite_mode)
{
g_return_if_fail (GIMP_IS_LAYER (layer));
if (mode) *mode = layer->effective_mode;
if (blend_space) *blend_space = layer->effective_blend_space;
if (composite_space) *composite_space = layer->effective_composite_space;
if (composite_mode) *composite_mode = layer->effective_composite_mode;
}
gboolean
gimp_layer_get_excludes_backdrop (GimpLayer *layer)
{
g_return_val_if_fail (GIMP_IS_LAYER (layer), FALSE);
return layer->excludes_backdrop;
}
void
gimp_layer_set_lock_alpha (GimpLayer *layer,
gboolean lock_alpha,
gboolean push_undo)
{
g_return_if_fail (GIMP_IS_LAYER (layer));
g_return_if_fail (gimp_layer_can_lock_alpha (layer));
lock_alpha = lock_alpha ? TRUE : FALSE;
if (layer->lock_alpha != lock_alpha)
{
if (push_undo && gimp_item_is_attached (GIMP_ITEM (layer)))
{
GimpImage *image = gimp_item_get_image (GIMP_ITEM (layer));
gimp_image_undo_push_layer_lock_alpha (image, NULL, layer);
}
layer->lock_alpha = lock_alpha;
g_signal_emit (layer, layer_signals[LOCK_ALPHA_CHANGED], 0);
g_object_notify (G_OBJECT (layer), "lock-alpha");
}
}
gboolean
gimp_layer_get_lock_alpha (GimpLayer *layer)
{
g_return_val_if_fail (GIMP_IS_LAYER (layer), FALSE);
return layer->lock_alpha;
}
gboolean
gimp_layer_can_lock_alpha (GimpLayer *layer)
{
g_return_val_if_fail (GIMP_IS_LAYER (layer), FALSE);
if (gimp_viewable_get_children (GIMP_VIEWABLE (layer)))
return FALSE;
return TRUE;
}
/* protected functions */
void
gimp_layer_update_effective_mode (GimpLayer *layer)
{
GimpLayerMode mode;
GimpLayerColorSpace blend_space;
GimpLayerColorSpace composite_space;
GimpLayerCompositeMode composite_mode;
g_return_if_fail (GIMP_IS_LAYER (layer));
GIMP_LAYER_GET_CLASS (layer)->get_effective_mode (layer,
&mode,
&blend_space,
&composite_space,
&composite_mode);
if (mode != layer->effective_mode ||
blend_space != layer->effective_blend_space ||
composite_space != layer->effective_composite_space ||
composite_mode != layer->effective_composite_mode)
{
layer->effective_mode = mode;
layer->effective_blend_space = blend_space;
layer->effective_composite_space = composite_space;
layer->effective_composite_mode = composite_mode;
g_signal_emit (layer, layer_signals[EFFECTIVE_MODE_CHANGED], 0);
if (gimp_filter_peek_node (GIMP_FILTER (layer)))
gimp_layer_update_mode_node (layer);
gimp_drawable_update (GIMP_DRAWABLE (layer), 0, 0, -1, -1);
}
}
void
gimp_layer_update_excludes_backdrop (GimpLayer *layer)
{
gboolean excludes_backdrop;
g_return_if_fail (GIMP_IS_LAYER (layer));
excludes_backdrop =
GIMP_LAYER_GET_CLASS (layer)->get_excludes_backdrop (layer);
if (excludes_backdrop != layer->excludes_backdrop)
{
layer->excludes_backdrop = excludes_backdrop;
g_signal_emit (layer, layer_signals[EXCLUDES_BACKDROP_CHANGED], 0);
g_object_notify (G_OBJECT (layer), "excludes-backdrop");
}
}
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