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1ba2e11c91780ea99b51eb3dff4d4f9fb6f15cb9
gimp/app/core/gimpgrouplayer.c
Ell b495475ad9 Issue #4634 - Pass-through groups bounding-box is not properly updated ... 
... causing artifacts

In GimpGroupLayer, override GimpLayer::get_bounding_box() to return
the group's own calculated bounding box for pass-through groups,
instead of using the group graph's bounding box, as calculated by
the default implementation of GimpDrawable::get_bounding_box().
We don't currently update the group's bounding box in response to
all the events that may affect the graph's bounding box, which can
lead to artifacts, neither should we use the graph's bounding box
anyway, since it includes the backdrop's bounding box, as the
group's layers are composited against the background.

Note that we still use the graph's bounding box for non-pass-
through groups, since it takes attached filters into account,
which are applicable for normal groups, but not pass-through
groups.

Additionally, don't restrict the group's bounding when it has a
mask, since this is now handled by GimpLayer.

(cherry picked from commit aa9ae1c65c)
2020-02-21 22:57:41 +02:00

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* GimpGroupLayer
* Copyright (C) 2009 Michael Natterer <mitch@gimp.org>
*
* 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 <string.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gegl.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpmath/gimpmath.h"
#include "core-types.h"
#include "gegl/gimp-babl.h"
#include "gegl/gimp-gegl-loops.h"
#include "gimpdrawable-filters.h"
#include "gimpgrouplayer.h"
#include "gimpgrouplayerundo.h"
#include "gimpimage.h"
#include "gimpimage-undo.h"
#include "gimpimage-undo-push.h"
#include "gimplayerstack.h"
#include "gimpobjectqueue.h"
#include "gimppickable.h"
#include "gimpprogress.h"
#include "gimpprojectable.h"
#include "gimpprojection.h"
#include "gimp-intl.h"
typedef struct _GimpGroupLayerPrivate GimpGroupLayerPrivate;
struct _GimpGroupLayerPrivate
{
GimpContainer *children;
GimpProjection *projection;
GeglNode *source_node;
GeglNode *parent_source_node;
GeglNode *graph;
GeglNode *offset_node;
GeglRectangle bounding_box;
gint suspend_resize;
gint suspend_mask;
GeglBuffer *suspended_mask_buffer;
GeglRectangle suspended_mask_bounds;
gint direct_update;
gint transforming;
gboolean expanded;
gboolean pass_through;
/* hackish temp states to make the projection/tiles stuff work */
const Babl *convert_format;
gboolean reallocate_projection;
};
#define GET_PRIVATE(item) ((GimpGroupLayerPrivate *) gimp_group_layer_get_instance_private ((GimpGroupLayer *) (item)))
static void gimp_projectable_iface_init (GimpProjectableInterface *iface);
static void gimp_pickable_iface_init (GimpPickableInterface *iface);
static void gimp_group_layer_finalize (GObject *object);
static void gimp_group_layer_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_group_layer_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static gint64 gimp_group_layer_get_memsize (GimpObject *object,
gint64 *gui_size);
static void gimp_group_layer_ancestry_changed (GimpViewable *viewable);
static gboolean gimp_group_layer_get_size (GimpViewable *viewable,
gint *width,
gint *height);
static GimpContainer * gimp_group_layer_get_children (GimpViewable *viewable);
static gboolean gimp_group_layer_get_expanded (GimpViewable *viewable);
static void gimp_group_layer_set_expanded (GimpViewable *viewable,
gboolean expanded);
static gboolean gimp_group_layer_is_position_locked (GimpItem *item);
static GimpItem * gimp_group_layer_duplicate (GimpItem *item,
GType new_type);
static void gimp_group_layer_convert (GimpItem *item,
GimpImage *dest_image,
GType old_type);
static void gimp_group_layer_start_transform (GimpItem *item,
gboolean push_undo);
static void gimp_group_layer_end_transform (GimpItem *item,
gboolean push_undo);
static void gimp_group_layer_resize (GimpItem *item,
GimpContext *context,
GimpFillType fill_type,
gint new_width,
gint new_height,
gint offset_x,
gint offset_y);
static GimpTransformResize
gimp_group_layer_get_clip (GimpItem *item,
GimpTransformResize clip_result);
static gint64 gimp_group_layer_estimate_memsize (GimpDrawable *drawable,
GimpComponentType component_type,
gint width,
gint height);
static void gimp_group_layer_update_all (GimpDrawable *drawable);
static void gimp_group_layer_translate (GimpLayer *layer,
gint offset_x,
gint offset_y);
static void gimp_group_layer_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_group_layer_flip (GimpLayer *layer,
GimpContext *context,
GimpOrientationType flip_type,
gdouble axis,
gboolean clip_result);
static void gimp_group_layer_rotate (GimpLayer *layer,
GimpContext *context,
GimpRotationType rotate_type,
gdouble center_x,
gdouble center_y,
gboolean clip_result);
static void gimp_group_layer_transform (GimpLayer *layer,
GimpContext *context,
const GimpMatrix3 *matrix,
GimpTransformDirection direction,
GimpInterpolationType interpolation_type,
GimpTransformResize clip_result,
GimpProgress *progress);
static void gimp_group_layer_convert_type (GimpLayer *layer,
GimpImage *dest_image,
const Babl *new_format,
GimpColorProfile *dest_profile,
GeglDitherMethod layer_dither_type,
GeglDitherMethod mask_dither_type,
gboolean push_undo,
GimpProgress *progress);
static GeglNode * gimp_group_layer_get_source_node (GimpDrawable *drawable);
static void gimp_group_layer_opacity_changed (GimpLayer *layer);
static void gimp_group_layer_effective_mode_changed (GimpLayer *layer);
static void
gimp_group_layer_excludes_backdrop_changed (GimpLayer *layer);
static GeglRectangle
gimp_group_layer_get_bounding_box (GimpLayer *layer);
static void gimp_group_layer_get_effective_mode (GimpLayer *layer,
GimpLayerMode *mode,
GimpLayerColorSpace *blend_space,
GimpLayerColorSpace *composite_space,
GimpLayerCompositeMode *composite_mode);
static gboolean
gimp_group_layer_get_excludes_backdrop (GimpLayer *layer);
static const Babl * gimp_group_layer_get_format (GimpProjectable *projectable);
static GeglRectangle
gimp_group_layer_projectable_get_bounding_box (GimpProjectable *projectable);
static GeglNode * gimp_group_layer_get_graph (GimpProjectable *projectable);
static void gimp_group_layer_begin_render (GimpProjectable *projectable);
static void gimp_group_layer_end_render (GimpProjectable *projectable);
static void gimp_group_layer_pickable_flush (GimpPickable *pickable);
static gdouble gimp_group_layer_get_opacity_at (GimpPickable *pickable,
gint x,
gint y);
static void gimp_group_layer_child_add (GimpContainer *container,
GimpLayer *child,
GimpGroupLayer *group);
static void gimp_group_layer_child_remove (GimpContainer *container,
GimpLayer *child,
GimpGroupLayer *group);
static void gimp_group_layer_child_move (GimpLayer *child,
GParamSpec *pspec,
GimpGroupLayer *group);
static void gimp_group_layer_child_resize (GimpLayer *child,
GimpGroupLayer *group);
static void gimp_group_layer_child_active_changed (GimpLayer *child,
GimpGroupLayer *group);
static void
gimp_group_layer_child_effective_mode_changed (GimpLayer *child,
GimpGroupLayer *group);
static void
gimp_group_layer_child_excludes_backdrop_changed (GimpLayer *child,
GimpGroupLayer *group);
static void gimp_group_layer_flush (GimpGroupLayer *group);
static void gimp_group_layer_update (GimpGroupLayer *group);
static void gimp_group_layer_update_size (GimpGroupLayer *group);
static void gimp_group_layer_update_mask_size (GimpGroupLayer *group);
static void gimp_group_layer_update_source_node (GimpGroupLayer *group);
static void gimp_group_layer_update_mode_node (GimpGroupLayer *group);
static void gimp_group_layer_stack_update (GimpDrawableStack *stack,
gint x,
gint y,
gint width,
gint height,
GimpGroupLayer *group);
static void gimp_group_layer_proj_update (GimpProjection *proj,
gboolean now,
gint x,
gint y,
gint width,
gint height,
GimpGroupLayer *group);
G_DEFINE_TYPE_WITH_CODE (GimpGroupLayer, gimp_group_layer, GIMP_TYPE_LAYER,
G_ADD_PRIVATE (GimpGroupLayer)
G_IMPLEMENT_INTERFACE (GIMP_TYPE_PROJECTABLE,
gimp_projectable_iface_init)
G_IMPLEMENT_INTERFACE (GIMP_TYPE_PICKABLE,
gimp_pickable_iface_init))
#define parent_class gimp_group_layer_parent_class
/* disable pass-through groups strength-reduction to normal groups.
* see gimp_group_layer_get_effective_mode().
*/
static gboolean no_pass_through_strength_reduction = FALSE;
static void
gimp_group_layer_class_init (GimpGroupLayerClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpObjectClass *gimp_object_class = GIMP_OBJECT_CLASS (klass);
GimpViewableClass *viewable_class = GIMP_VIEWABLE_CLASS (klass);
GimpItemClass *item_class = GIMP_ITEM_CLASS (klass);
GimpDrawableClass *drawable_class = GIMP_DRAWABLE_CLASS (klass);
GimpLayerClass *layer_class = GIMP_LAYER_CLASS (klass);
object_class->set_property = gimp_group_layer_set_property;
object_class->get_property = gimp_group_layer_get_property;
object_class->finalize = gimp_group_layer_finalize;
gimp_object_class->get_memsize = gimp_group_layer_get_memsize;
viewable_class->default_icon_name = "gimp-group-layer";
viewable_class->ancestry_changed = gimp_group_layer_ancestry_changed;
viewable_class->get_size = gimp_group_layer_get_size;
viewable_class->get_children = gimp_group_layer_get_children;
viewable_class->set_expanded = gimp_group_layer_set_expanded;
viewable_class->get_expanded = gimp_group_layer_get_expanded;
item_class->is_position_locked = gimp_group_layer_is_position_locked;
item_class->duplicate = gimp_group_layer_duplicate;
item_class->convert = gimp_group_layer_convert;
item_class->start_transform = gimp_group_layer_start_transform;
item_class->end_transform = gimp_group_layer_end_transform;
item_class->resize = gimp_group_layer_resize;
item_class->get_clip = gimp_group_layer_get_clip;
item_class->default_name = _("Layer Group");
item_class->rename_desc = C_("undo-type", "Rename Layer Group");
item_class->translate_desc = C_("undo-type", "Move Layer Group");
item_class->scale_desc = C_("undo-type", "Scale Layer Group");
item_class->resize_desc = C_("undo-type", "Resize Layer Group");
item_class->flip_desc = C_("undo-type", "Flip Layer Group");
item_class->rotate_desc = C_("undo-type", "Rotate Layer Group");
item_class->transform_desc = C_("undo-type", "Transform Layer Group");
drawable_class->estimate_memsize = gimp_group_layer_estimate_memsize;
drawable_class->update_all = gimp_group_layer_update_all;
drawable_class->get_source_node = gimp_group_layer_get_source_node;
layer_class->opacity_changed = gimp_group_layer_opacity_changed;
layer_class->effective_mode_changed = gimp_group_layer_effective_mode_changed;
layer_class->excludes_backdrop_changed = gimp_group_layer_excludes_backdrop_changed;
layer_class->translate = gimp_group_layer_translate;
layer_class->scale = gimp_group_layer_scale;
layer_class->flip = gimp_group_layer_flip;
layer_class->rotate = gimp_group_layer_rotate;
layer_class->transform = gimp_group_layer_transform;
layer_class->convert_type = gimp_group_layer_convert_type;
layer_class->get_bounding_box = gimp_group_layer_get_bounding_box;
layer_class->get_effective_mode = gimp_group_layer_get_effective_mode;
layer_class->get_excludes_backdrop = gimp_group_layer_get_excludes_backdrop;
if (g_getenv ("GIMP_NO_PASS_THROUGH_STRENGTH_REDUCTION"))
no_pass_through_strength_reduction = TRUE;
}
static void
gimp_projectable_iface_init (GimpProjectableInterface *iface)
{
iface->get_image = (GimpImage * (*) (GimpProjectable *)) gimp_item_get_image;
iface->get_format = gimp_group_layer_get_format;
iface->get_offset = (void (*) (GimpProjectable*, gint*, gint*)) gimp_item_get_offset;
iface->get_bounding_box = gimp_group_layer_projectable_get_bounding_box;
iface->get_graph = gimp_group_layer_get_graph;
iface->begin_render = gimp_group_layer_begin_render;
iface->end_render = gimp_group_layer_end_render;
iface->invalidate_preview = (void (*) (GimpProjectable*)) gimp_viewable_invalidate_preview;
}
static void
gimp_pickable_iface_init (GimpPickableInterface *iface)
{
iface->flush = gimp_group_layer_pickable_flush;
iface->get_opacity_at = gimp_group_layer_get_opacity_at;
}
static void
gimp_group_layer_init (GimpGroupLayer *group)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (group);
private->children = gimp_layer_stack_new (GIMP_TYPE_LAYER);
private->expanded = TRUE;
g_signal_connect (private->children, "add",
G_CALLBACK (gimp_group_layer_child_add),
group);
g_signal_connect (private->children, "remove",
G_CALLBACK (gimp_group_layer_child_remove),
group);
gimp_container_add_handler (private->children, "notify::offset-x",
G_CALLBACK (gimp_group_layer_child_move),
group);
gimp_container_add_handler (private->children, "notify::offset-y",
G_CALLBACK (gimp_group_layer_child_move),
group);
gimp_container_add_handler (private->children, "size-changed",
G_CALLBACK (gimp_group_layer_child_resize),
group);
gimp_container_add_handler (private->children, "bounding-box-changed",
G_CALLBACK (gimp_group_layer_child_resize),
group);
gimp_container_add_handler (private->children, "active-changed",
G_CALLBACK (gimp_group_layer_child_active_changed),
group);
gimp_container_add_handler (private->children, "effective-mode-changed",
G_CALLBACK (gimp_group_layer_child_effective_mode_changed),
group);
gimp_container_add_handler (private->children, "excludes-backdrop-changed",
G_CALLBACK (gimp_group_layer_child_excludes_backdrop_changed),
group);
g_signal_connect (private->children, "update",
G_CALLBACK (gimp_group_layer_stack_update),
group);
private->projection = gimp_projection_new (GIMP_PROJECTABLE (group));
gimp_projection_set_priority (private->projection, 1);
g_signal_connect (private->projection, "update",
G_CALLBACK (gimp_group_layer_proj_update),
group);
}
static void
gimp_group_layer_finalize (GObject *object)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (object);
if (private->children)
{
g_signal_handlers_disconnect_by_func (private->children,
gimp_group_layer_child_add,
object);
g_signal_handlers_disconnect_by_func (private->children,
gimp_group_layer_child_remove,
object);
g_signal_handlers_disconnect_by_func (private->children,
gimp_group_layer_stack_update,
object);
/* this is particularly important to avoid reallocating the projection
* in response to a "bounding-box-changed" signal, which can be emitted
* during layer destruction. see issue #4584.
*/
gimp_container_remove_handlers_by_data (private->children, object);
g_clear_object (&private->children);
}
g_clear_object (&private->projection);
g_clear_object (&private->source_node);
g_clear_object (&private->graph);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_group_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_group_layer_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
switch (property_id)
{
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static gint64
gimp_group_layer_get_memsize (GimpObject *object,
gint64 *gui_size)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (object);
gint64 memsize = 0;
memsize += gimp_object_get_memsize (GIMP_OBJECT (private->children), gui_size);
memsize += gimp_object_get_memsize (GIMP_OBJECT (private->projection), gui_size);
return memsize + GIMP_OBJECT_CLASS (parent_class)->get_memsize (object,
gui_size);
}
static void
gimp_group_layer_ancestry_changed (GimpViewable *viewable)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (viewable);
gimp_projection_set_priority (private->projection,
gimp_viewable_get_depth (viewable) + 1);
GIMP_VIEWABLE_CLASS (parent_class)->ancestry_changed (viewable);
}
static gboolean
gimp_group_layer_get_size (GimpViewable *viewable,
gint *width,
gint *height)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (viewable);
/* return the size only if there are children ... */
if (! gimp_container_is_empty (private->children))
{
return GIMP_VIEWABLE_CLASS (parent_class)->get_size (viewable,
width, height);
}
/* ... otherwise, return "no content" */
return FALSE;
}
static GimpContainer *
gimp_group_layer_get_children (GimpViewable *viewable)
{
return GET_PRIVATE (viewable)->children;
}
static gboolean
gimp_group_layer_get_expanded (GimpViewable *viewable)
{
GimpGroupLayer *group = GIMP_GROUP_LAYER (viewable);
return GET_PRIVATE (group)->expanded;
}
static void
gimp_group_layer_set_expanded (GimpViewable *viewable,
gboolean expanded)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (viewable);
if (private->expanded != expanded)
{
private->expanded = expanded;
gimp_viewable_expanded_changed (viewable);
}
}
static gboolean
gimp_group_layer_is_position_locked (GimpItem *item)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (item);
GList *list;
for (list = gimp_item_stack_get_item_iter (GIMP_ITEM_STACK (private->children));
list;
list = g_list_next (list))
{
GimpItem *child = list->data;
if (gimp_item_is_position_locked (child))
return TRUE;
}
return GIMP_ITEM_CLASS (parent_class)->is_position_locked (item);
}
static GimpItem *
gimp_group_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_GROUP_LAYER (new_item))
{
GimpGroupLayerPrivate *private = GET_PRIVATE (item);
GimpGroupLayer *new_group = GIMP_GROUP_LAYER (new_item);
GimpGroupLayerPrivate *new_private = GET_PRIVATE (new_item);
gint position = 0;
GList *list;
gimp_group_layer_suspend_resize (new_group, FALSE);
for (list = gimp_item_stack_get_item_iter (GIMP_ITEM_STACK (private->children));
list;
list = g_list_next (list))
{
GimpItem *child = list->data;
GimpItem *new_child;
GimpLayerMask *mask;
new_child = gimp_item_duplicate (child, G_TYPE_FROM_INSTANCE (child));
gimp_object_set_name (GIMP_OBJECT (new_child),
gimp_object_get_name (child));
mask = gimp_layer_get_mask (GIMP_LAYER (child));
if (mask)
{
GimpLayerMask *new_mask;
new_mask = gimp_layer_get_mask (GIMP_LAYER (new_child));
gimp_object_set_name (GIMP_OBJECT (new_mask),
gimp_object_get_name (mask));
}
gimp_viewable_set_parent (GIMP_VIEWABLE (new_child),
GIMP_VIEWABLE (new_group));
gimp_container_insert (new_private->children,
GIMP_OBJECT (new_child),
position++);
}
/* force the projection to reallocate itself */
GET_PRIVATE (new_group)->reallocate_projection = TRUE;
gimp_group_layer_resume_resize (new_group, FALSE);
}
return new_item;
}
static void
gimp_group_layer_convert (GimpItem *item,
GimpImage *dest_image,
GType old_type)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (item);
GList *list;
for (list = gimp_item_stack_get_item_iter (GIMP_ITEM_STACK (private->children));
list;
list = g_list_next (list))
{
GimpItem *child = list->data;
GIMP_ITEM_GET_CLASS (child)->convert (child, dest_image,
G_TYPE_FROM_INSTANCE (child));
}
GIMP_ITEM_CLASS (parent_class)->convert (item, dest_image, old_type);
}
static void
gimp_group_layer_start_transform (GimpItem *item,
gboolean push_undo)
{
_gimp_group_layer_start_transform (GIMP_GROUP_LAYER (item), push_undo);
if (GIMP_ITEM_CLASS (parent_class)->start_transform)
GIMP_ITEM_CLASS (parent_class)->start_transform (item, push_undo);
}
static void
gimp_group_layer_end_transform (GimpItem *item,
gboolean push_undo)
{
if (GIMP_ITEM_CLASS (parent_class)->end_transform)
GIMP_ITEM_CLASS (parent_class)->end_transform (item, push_undo);
_gimp_group_layer_end_transform (GIMP_GROUP_LAYER (item), push_undo);
}
static void
gimp_group_layer_resize (GimpItem *item,
GimpContext *context,
GimpFillType fill_type,
gint new_width,
gint new_height,
gint offset_x,
gint offset_y)
{
GimpGroupLayer *group = GIMP_GROUP_LAYER (item);
GimpGroupLayerPrivate *private = GET_PRIVATE (item);
GList *list;
gint x, y;
/* we implement GimpItem::resize(), instead of GimpLayer::resize(), so that
* GimpLayer doesn't resize the mask. note that gimp_item_resize() calls
* gimp_item_{start,end}_move(), and not gimp_item_{start,end}_transform(),
* so that mask resizing is handled by gimp_group_layer_update_size().
*/
x = gimp_item_get_offset_x (item) - offset_x;
y = gimp_item_get_offset_y (item) - offset_y;
gimp_group_layer_suspend_resize (group, TRUE);
list = gimp_item_stack_get_item_iter (GIMP_ITEM_STACK (private->children));
while (list)
{
GimpItem *child = list->data;
gint child_width;
gint child_height;
gint child_x;
gint child_y;
list = g_list_next (list);
if (gimp_rectangle_intersect (x,
y,
new_width,
new_height,
gimp_item_get_offset_x (child),
gimp_item_get_offset_y (child),
gimp_item_get_width (child),
gimp_item_get_height (child),
&child_x,
&child_y,
&child_width,
&child_height))
{
gint child_offset_x = gimp_item_get_offset_x (child) - child_x;
gint child_offset_y = gimp_item_get_offset_y (child) - child_y;
gimp_item_resize (child, context, fill_type,
child_width, child_height,
child_offset_x, child_offset_y);
}
else if (gimp_item_is_attached (item))
{
gimp_image_remove_layer (gimp_item_get_image (item),
GIMP_LAYER (child),
TRUE, NULL);
}
else
{
gimp_container_remove (private->children, GIMP_OBJECT (child));
}
}
gimp_group_layer_resume_resize (group, TRUE);
}
static GimpTransformResize
gimp_group_layer_get_clip (GimpItem *item,
GimpTransformResize clip_result)
{
/* TODO: add clipping support, by clipping all sublayers as a unit, instead
* of individually.
*/
return GIMP_TRANSFORM_RESIZE_ADJUST;
}
static gint64
gimp_group_layer_estimate_memsize (GimpDrawable *drawable,
GimpComponentType component_type,
gint width,
gint height)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (drawable);
GList *list;
GimpImageBaseType base_type;
gint64 memsize = 0;
for (list = gimp_item_stack_get_item_iter (GIMP_ITEM_STACK (private->children));
list;
list = g_list_next (list))
{
GimpDrawable *child = list->data;
gint child_width;
gint child_height;
child_width = (gimp_item_get_width (GIMP_ITEM (child)) *
width /
gimp_item_get_width (GIMP_ITEM (drawable)));
child_height = (gimp_item_get_height (GIMP_ITEM (child)) *
height /
gimp_item_get_height (GIMP_ITEM (drawable)));
memsize += gimp_drawable_estimate_memsize (child,
component_type,
child_width,
child_height);
}
base_type = gimp_drawable_get_base_type (drawable);
memsize += gimp_projection_estimate_memsize (base_type, component_type,
width, height);
return memsize +
GIMP_DRAWABLE_CLASS (parent_class)->estimate_memsize (drawable,
component_type,
width, height);
}
static void
gimp_group_layer_update_all (GimpDrawable *drawable)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (drawable);
GList *list;
/* redirect stack updates to the drawable, rather than to the projection */
private->direct_update++;
for (list = gimp_item_stack_get_item_iter (GIMP_ITEM_STACK (private->children));
list;
list = g_list_next (list))
{
GimpFilter *child = list->data;
if (gimp_filter_get_active (child))
gimp_drawable_update_all (GIMP_DRAWABLE (child));
}
/* redirect stack updates back to the projection */
private->direct_update--;
}
static void
gimp_group_layer_translate (GimpLayer *layer,
gint offset_x,
gint offset_y)
{
GimpGroupLayer *group = GIMP_GROUP_LAYER (layer);
GimpGroupLayerPrivate *private = GET_PRIVATE (layer);
gint x, y;
GList *list;
/* don't use gimp_group_layer_suspend_resize(), but rather increment
* private->suspend_resize directly, since we're translating the group layer
* here, rather than relying on gimp_group_layer_update_size() to do it.
*/
private->suspend_resize++;
/* redirect stack updates to the drawable, rather than to the projection */
private->direct_update++;
/* translate the child layers *before* updating the group's offset, so that,
* if this is a nested group, the parent's bounds still reflect the original
* layer positions. This prevents the original area of the child layers,
* which is updated as part of their translation, from being clipped to the
* post-translation parent bounds (see issue #3484). The new area of the
* child layers, which is likewise updated as part of translation, *may* get
* clipped to the old parent bounds, but the corresponding region will be
* updated anyway when the parent is resized, once we update the group's
* offset.
*/
for (list = gimp_item_stack_get_item_iter (GIMP_ITEM_STACK (private->children));
list;
list = g_list_next (list))
{
GimpItem *child = list->data;
/* don't push an undo here because undo will call us again */
gimp_item_translate (child, offset_x, offset_y, FALSE);
}
gimp_item_get_offset (GIMP_ITEM (group), &x, &y);
x += offset_x;
y += offset_y;
/* update the offset node */
if (private->offset_node)
gegl_node_set (private->offset_node,
"x", (gdouble) -x,
"y", (gdouble) -y,
NULL);
/* invalidate the selection boundary because of a layer modification */
gimp_drawable_invalidate_boundary (GIMP_DRAWABLE (layer));
/* update the group layer offset */
gimp_item_set_offset (GIMP_ITEM (group), x, y);
/* redirect stack updates back to the projection */
private->direct_update--;
/* don't use gimp_group_layer_resume_resize(), but rather decrement
* private->suspend_resize directly, so that gimp_group_layer_update_size()
* isn't called.
*/
private->suspend_resize--;
}
static void
gimp_group_layer_scale (GimpLayer *layer,
gint new_width,
gint new_height,
gint new_offset_x,
gint new_offset_y,
GimpInterpolationType interpolation_type,
GimpProgress *progress)
{
GimpGroupLayer *group = GIMP_GROUP_LAYER (layer);
GimpGroupLayerPrivate *private = GET_PRIVATE (layer);
GimpItem *item = GIMP_ITEM (layer);
GimpObjectQueue *queue = NULL;
GList *list;
gdouble width_factor;
gdouble height_factor;
gint old_offset_x;
gint old_offset_y;
width_factor = (gdouble) new_width / (gdouble) gimp_item_get_width (item);
height_factor = (gdouble) new_height / (gdouble) gimp_item_get_height (item);
old_offset_x = gimp_item_get_offset_x (item);
old_offset_y = gimp_item_get_offset_y (item);
if (progress)
{
queue = gimp_object_queue_new (progress);
progress = GIMP_PROGRESS (queue);
gimp_object_queue_push_container (queue, private->children);
}
gimp_group_layer_suspend_resize (group, TRUE);
list = gimp_item_stack_get_item_iter (GIMP_ITEM_STACK (private->children));
while (list)
{
GimpItem *child = list->data;
list = g_list_next (list);
if (queue)
gimp_object_queue_pop (queue);
if (! gimp_item_scale_by_factors_with_origin (child,
width_factor, height_factor,
old_offset_x, old_offset_y,
new_offset_x, new_offset_y,
interpolation_type,
progress))
{
/* new width or height are 0; remove item */
if (gimp_item_is_attached (item))
{
gimp_image_remove_layer (gimp_item_get_image (item),
GIMP_LAYER (child),
TRUE, NULL);
}
else
{
gimp_container_remove (private->children, GIMP_OBJECT (child));
}
}
}
gimp_group_layer_resume_resize (group, TRUE);
g_clear_object (&queue);
}
static void
gimp_group_layer_flip (GimpLayer *layer,
GimpContext *context,
GimpOrientationType flip_type,
gdouble axis,
gboolean clip_result)
{
GimpGroupLayer *group = GIMP_GROUP_LAYER (layer);
GimpGroupLayerPrivate *private = GET_PRIVATE (layer);
GList *list;
gimp_group_layer_suspend_resize (group, TRUE);
for (list = gimp_item_stack_get_item_iter (GIMP_ITEM_STACK (private->children));
list;
list = g_list_next (list))
{
GimpItem *child = list->data;
gimp_item_flip (child, context,
flip_type, axis, clip_result);
}
gimp_group_layer_resume_resize (group, TRUE);
}
static void
gimp_group_layer_rotate (GimpLayer *layer,
GimpContext *context,
GimpRotationType rotate_type,
gdouble center_x,
gdouble center_y,
gboolean clip_result)
{
GimpGroupLayer *group = GIMP_GROUP_LAYER (layer);
GimpGroupLayerPrivate *private = GET_PRIVATE (layer);
GList *list;
gimp_group_layer_suspend_resize (group, TRUE);
for (list = gimp_item_stack_get_item_iter (GIMP_ITEM_STACK (private->children));
list;
list = g_list_next (list))
{
GimpItem *child = list->data;
gimp_item_rotate (child, context,
rotate_type, center_x, center_y, clip_result);
}
gimp_group_layer_resume_resize (group, TRUE);
}
static void
gimp_group_layer_transform (GimpLayer *layer,
GimpContext *context,
const GimpMatrix3 *matrix,
GimpTransformDirection direction,
GimpInterpolationType interpolation_type,
GimpTransformResize clip_result,
GimpProgress *progress)
{
GimpGroupLayer *group = GIMP_GROUP_LAYER (layer);
GimpGroupLayerPrivate *private = GET_PRIVATE (layer);
GimpObjectQueue *queue = NULL;
GList *list;
if (progress)
{
queue = gimp_object_queue_new (progress);
progress = GIMP_PROGRESS (queue);
gimp_object_queue_push_container (queue, private->children);
}
gimp_group_layer_suspend_resize (group, TRUE);
for (list = gimp_item_stack_get_item_iter (GIMP_ITEM_STACK (private->children));
list;
list = g_list_next (list))
{
GimpItem *child = list->data;
if (queue)
gimp_object_queue_pop (queue);
gimp_item_transform (child, context,
matrix, direction,
interpolation_type,
clip_result, progress);
}
gimp_group_layer_resume_resize (group, TRUE);
g_clear_object (&queue);
}
static const Babl *
get_projection_format (GimpProjectable *projectable,
GimpImageBaseType base_type,
GimpPrecision precision)
{
GimpImage *image = gimp_item_get_image (GIMP_ITEM (projectable));
switch (base_type)
{
case GIMP_RGB:
case GIMP_INDEXED:
return gimp_image_get_format (image, GIMP_RGB, precision, TRUE);
case GIMP_GRAY:
return gimp_image_get_format (image, GIMP_GRAY, precision, TRUE);
}
g_return_val_if_reached (NULL);
}
static void
gimp_group_layer_convert_type (GimpLayer *layer,
GimpImage *dest_image,
const Babl *new_format,
GimpColorProfile *dest_profile,
GeglDitherMethod layer_dither_type,
GeglDitherMethod mask_dither_type,
gboolean push_undo,
GimpProgress *progress)
{
GimpGroupLayer *group = GIMP_GROUP_LAYER (layer);
GimpGroupLayerPrivate *private = GET_PRIVATE (layer);
GeglBuffer *buffer;
if (push_undo)
{
GimpImage *image = gimp_item_get_image (GIMP_ITEM (group));
gimp_image_undo_push_group_layer_convert (image, NULL, group);
}
/* Need to temporarily set the projectable's format to the new
* values so the projection will create its tiles with the right
* depth
*/
private->convert_format =
get_projection_format (GIMP_PROJECTABLE (group),
gimp_babl_format_get_base_type (new_format),
gimp_babl_format_get_precision (new_format));
gimp_projectable_structure_changed (GIMP_PROJECTABLE (group));
gimp_group_layer_flush (group);
buffer = gimp_pickable_get_buffer (GIMP_PICKABLE (private->projection));
gimp_drawable_set_buffer_full (GIMP_DRAWABLE (group),
FALSE, NULL,
buffer, NULL,
TRUE);
/* reset, the actual format is right now */
private->convert_format = NULL;
}
static GeglNode *
gimp_group_layer_get_source_node (GimpDrawable *drawable)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (drawable);
GeglNode *input;
g_warn_if_fail (private->source_node == NULL);
private->source_node = gegl_node_new ();
input = gegl_node_get_input_proxy (private->source_node, "input");
private->parent_source_node =
GIMP_DRAWABLE_CLASS (parent_class)->get_source_node (drawable);
gegl_node_add_child (private->source_node, private->parent_source_node);
g_object_unref (private->parent_source_node);
if (gegl_node_has_pad (private->parent_source_node, "input"))
{
gegl_node_connect_to (input, "output",
private->parent_source_node, "input");
}
/* make sure we have a graph */
(void) gimp_group_layer_get_graph (GIMP_PROJECTABLE (drawable));
gegl_node_add_child (private->source_node, private->graph);
gimp_group_layer_update_source_node (GIMP_GROUP_LAYER (drawable));
return g_object_ref (private->source_node);
}
static void
gimp_group_layer_opacity_changed (GimpLayer *layer)
{
gimp_layer_update_effective_mode (layer);
if (GIMP_LAYER_CLASS (parent_class)->opacity_changed)
GIMP_LAYER_CLASS (parent_class)->opacity_changed (layer);
}
static void
gimp_group_layer_effective_mode_changed (GimpLayer *layer)
{
GimpGroupLayer *group = GIMP_GROUP_LAYER (layer);
GimpGroupLayerPrivate *private = GET_PRIVATE (layer);
GimpLayerMode mode;
gboolean pass_through;
gboolean update_bounding_box = FALSE;
gimp_layer_get_effective_mode (layer, &mode, NULL, NULL, NULL);
pass_through = (mode == GIMP_LAYER_MODE_PASS_THROUGH);
if (pass_through != private->pass_through)
{
if (private->pass_through && ! pass_through)
{
/* when switching from pass-through mode to a non-pass-through mode,
* flush the pickable in order to make sure the projection's buffer
* gets properly invalidated synchronously, so that it can be used
* as a source for the rest of the composition.
*/
gimp_pickable_flush (GIMP_PICKABLE (private->projection));
}
private->pass_through = pass_through;
update_bounding_box = TRUE;
}
gimp_group_layer_update_source_node (group);
gimp_group_layer_update_mode_node (group);
if (update_bounding_box)
gimp_drawable_update_bounding_box (GIMP_DRAWABLE (group));
if (GIMP_LAYER_CLASS (parent_class)->effective_mode_changed)
GIMP_LAYER_CLASS (parent_class)->effective_mode_changed (layer);
}
static void
gimp_group_layer_excludes_backdrop_changed (GimpLayer *layer)
{
GimpGroupLayer *group = GIMP_GROUP_LAYER (layer);
gimp_group_layer_update_source_node (group);
gimp_group_layer_update_mode_node (group);
if (GIMP_LAYER_CLASS (parent_class)->excludes_backdrop_changed)
GIMP_LAYER_CLASS (parent_class)->excludes_backdrop_changed (layer);
}
static GeglRectangle
gimp_group_layer_get_bounding_box (GimpLayer *layer)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (layer);
/* for pass-through groups, use the group's calculated bounding box, instead
* of the source-node's bounding box, since we don't update the bounding box
* on all events that may affect the latter, and since it includes the
* bounding box of the backdrop. this means we can't attach filters that may
* affect the bounding box to a pass-through group (since their effect weon't
* be reflected by the group's bounding box), but attaching filters to pass-
* through groups makes little sense anyway.
*/
if (private->pass_through)
return private->bounding_box;
else
return GIMP_LAYER_CLASS (parent_class)->get_bounding_box (layer);
}
static void
gimp_group_layer_get_effective_mode (GimpLayer *layer,
GimpLayerMode *mode,
GimpLayerColorSpace *blend_space,
GimpLayerColorSpace *composite_space,
GimpLayerCompositeMode *composite_mode)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (layer);
/* try to strength-reduce pass-through groups to normal groups, which are
* cheaper.
*/
if (gimp_layer_get_mode (layer) == GIMP_LAYER_MODE_PASS_THROUGH &&
! no_pass_through_strength_reduction)
{
/* we perform the strength-reduction if:
*
* - the group has no active children;
*
* or,
*
* - the group has a single active child; or,
*
* - the effective mode of all the active children is normal, their
* effective composite mode is UNION, and their effective blend and
* composite spaces are equal;
*
* - and,
*
* - the group's opacity is 100%, and it has no mask (or the mask
* isn't applied); or,
*
* - the group's composite space equals the active children's
* composite space.
*/
GList *list;
gboolean reduce = TRUE;
gboolean first = TRUE;
*mode = GIMP_LAYER_MODE_NORMAL;
*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);
for (list = gimp_item_stack_get_item_iter (GIMP_ITEM_STACK (private->children));
list;
list = g_list_next (list))
{
GimpLayer *child = list->data;
if (! gimp_filter_get_active (GIMP_FILTER (child)))
continue;
if (first)
{
gimp_layer_get_effective_mode (child,
mode,
blend_space,
composite_space,
composite_mode);
if (*mode == GIMP_LAYER_MODE_NORMAL_LEGACY)
*mode = GIMP_LAYER_MODE_NORMAL;
first = FALSE;
}
else
{
GimpLayerMode other_mode;
GimpLayerColorSpace other_blend_space;
GimpLayerColorSpace other_composite_space;
GimpLayerCompositeMode other_composite_mode;
if (*mode != GIMP_LAYER_MODE_NORMAL ||
*composite_mode != GIMP_LAYER_COMPOSITE_UNION)
{
reduce = FALSE;
break;
}
gimp_layer_get_effective_mode (child,
&other_mode,
&other_blend_space,
&other_composite_space,
&other_composite_mode);
if (other_mode == GIMP_LAYER_MODE_NORMAL_LEGACY)
other_mode = GIMP_LAYER_MODE_NORMAL;
if (other_mode != *mode ||
other_blend_space != *blend_space ||
other_composite_space != *composite_space ||
other_composite_mode != *composite_mode)
{
reduce = FALSE;
break;
}
}
}
if (reduce)
{
gboolean has_mask;
has_mask = gimp_layer_get_mask (layer) &&
gimp_layer_get_apply_mask (layer);
if (first ||
(gimp_layer_get_opacity (layer) == GIMP_OPACITY_OPAQUE &&
! has_mask) ||
*composite_space == gimp_layer_get_real_composite_space (layer))
{
/* strength reduction succeeded! */
return;
}
}
}
/* strength-reduction failed. chain up. */
GIMP_LAYER_CLASS (parent_class)->get_effective_mode (layer,
mode,
blend_space,
composite_space,
composite_mode);
}
static gboolean
gimp_group_layer_get_excludes_backdrop (GimpLayer *layer)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (layer);
if (private->pass_through)
{
GList *list;
for (list = gimp_item_stack_get_item_iter (GIMP_ITEM_STACK (private->children));
list;
list = g_list_next (list))
{
GimpFilter *child = list->data;
if (gimp_filter_get_active (child) &&
gimp_layer_get_excludes_backdrop (GIMP_LAYER (child)))
return TRUE;
}
return FALSE;
}
else
return GIMP_LAYER_CLASS (parent_class)->get_excludes_backdrop (layer);
}
static const Babl *
gimp_group_layer_get_format (GimpProjectable *projectable)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (projectable);
GimpImageBaseType base_type;
GimpPrecision precision;
if (private->convert_format)
return private->convert_format;
base_type = gimp_drawable_get_base_type (GIMP_DRAWABLE (projectable));
precision = gimp_drawable_get_precision (GIMP_DRAWABLE (projectable));
return get_projection_format (projectable, base_type, precision);
}
static GeglRectangle
gimp_group_layer_projectable_get_bounding_box (GimpProjectable *projectable)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (projectable);
return private->bounding_box;
}
static GeglNode *
gimp_group_layer_get_graph (GimpProjectable *projectable)
{
GimpGroupLayer *group = GIMP_GROUP_LAYER (projectable);
GimpGroupLayerPrivate *private = GET_PRIVATE (projectable);
GeglNode *input;
GeglNode *layers_node;
GeglNode *output;
gint off_x;
gint off_y;
if (private->graph)
return private->graph;
private->graph = gegl_node_new ();
input = gegl_node_get_input_proxy (private->graph, "input");
layers_node =
gimp_filter_stack_get_graph (GIMP_FILTER_STACK (private->children));
gegl_node_add_child (private->graph, layers_node);
gegl_node_connect_to (input, "output",
layers_node, "input");
gimp_item_get_offset (GIMP_ITEM (group), &off_x, &off_y);
private->offset_node = gegl_node_new_child (private->graph,
"operation", "gegl:translate",
"x", (gdouble) -off_x,
"y", (gdouble) -off_y,
NULL);
gegl_node_connect_to (layers_node, "output",
private->offset_node, "input");
output = gegl_node_get_output_proxy (private->graph, "output");
gegl_node_connect_to (private->offset_node, "output",
output, "input");
return private->graph;
}
static void
gimp_group_layer_begin_render (GimpProjectable *projectable)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (projectable);
if (private->source_node == NULL)
return;
if (private->pass_through)
gegl_node_disconnect (private->graph, "input");
}
static void
gimp_group_layer_end_render (GimpProjectable *projectable)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (projectable);
if (private->source_node == NULL)
return;
if (private->pass_through)
{
GeglNode *input;
input = gegl_node_get_input_proxy (private->source_node, "input");
gegl_node_connect_to (input, "output",
private->graph, "input");
}
}
static void
gimp_group_layer_pickable_flush (GimpPickable *pickable)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (pickable);
gimp_pickable_flush (GIMP_PICKABLE (private->projection));
}
static gdouble
gimp_group_layer_get_opacity_at (GimpPickable *pickable,
gint x,
gint y)
{
/* Only consider child layers as having content */
return GIMP_OPACITY_TRANSPARENT;
}
/* public functions */
GimpLayer *
gimp_group_layer_new (GimpImage *image)
{
GimpGroupLayer *group;
const Babl *format;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
format = gimp_image_get_layer_format (image, TRUE);
group = GIMP_GROUP_LAYER (gimp_drawable_new (GIMP_TYPE_GROUP_LAYER,
image, NULL,
0, 0, 1, 1,
format));
gimp_layer_set_mode (GIMP_LAYER (group),
gimp_image_get_default_new_layer_mode (image),
FALSE);
return GIMP_LAYER (group);
}
GimpProjection *
gimp_group_layer_get_projection (GimpGroupLayer *group)
{
g_return_val_if_fail (GIMP_IS_GROUP_LAYER (group), NULL);
return GET_PRIVATE (group)->projection;
}
void
gimp_group_layer_suspend_resize (GimpGroupLayer *group,
gboolean push_undo)
{
GimpItem *item;
g_return_if_fail (GIMP_IS_GROUP_LAYER (group));
item = GIMP_ITEM (group);
if (! gimp_item_is_attached (item))
push_undo = FALSE;
if (push_undo)
gimp_image_undo_push_group_layer_suspend_resize (gimp_item_get_image (item),
NULL, group);
GET_PRIVATE (group)->suspend_resize++;
}
void
gimp_group_layer_resume_resize (GimpGroupLayer *group,
gboolean push_undo)
{
GimpGroupLayerPrivate *private;
GimpItem *item;
GimpItem *mask = NULL;
GeglBuffer *mask_buffer;
GeglRectangle mask_bounds;
GimpUndo *undo;
g_return_if_fail (GIMP_IS_GROUP_LAYER (group));
private = GET_PRIVATE (group);
g_return_if_fail (private->suspend_resize > 0);
item = GIMP_ITEM (group);
if (! gimp_item_is_attached (item))
push_undo = FALSE;
if (push_undo)
{
undo =
gimp_image_undo_push_group_layer_resume_resize (gimp_item_get_image (item),
NULL, group);
/* if there were any {suspend,resume}_mask() calls during the time the
* group's size was suspended, the resume_mask() calls will not have seen
* any changes to the mask, and will therefore won't restore the mask
* during undo. if the group's bounding box did change while resize was
* suspended, and if there are no other {suspend,resume}_mask() blocks
* that will see the resized mask, we have to restore the mask during the
* resume_resize() undo.
*
* we ref the mask buffer here, and compare it to the mask buffer after
* updating the size.
*/
if (private->suspend_resize == 1 && private->suspend_mask == 0)
{
mask = GIMP_ITEM (gimp_layer_get_mask (GIMP_LAYER (group)));
if (mask)
{
mask_buffer =
g_object_ref (gimp_drawable_get_buffer (GIMP_DRAWABLE (mask)));
mask_bounds.x = gimp_item_get_offset_x (mask);
mask_bounds.y = gimp_item_get_offset_y (mask);
mask_bounds.width = gimp_item_get_width (mask);
mask_bounds.height = gimp_item_get_height (mask);
}
}
}
private->suspend_resize--;
if (private->suspend_resize == 0)
{
gimp_group_layer_update_size (group);
if (mask)
{
/* if the mask changed, make sure it's restored during undo, as per
* the comment above.
*/
if (gimp_drawable_get_buffer (GIMP_DRAWABLE (mask)) != mask_buffer)
{
g_return_if_fail (undo != NULL);
GIMP_GROUP_LAYER_UNDO (undo)->mask_buffer = mask_buffer;
GIMP_GROUP_LAYER_UNDO (undo)->mask_bounds = mask_bounds;
}
else
{
g_object_unref (mask_buffer);
}
}
}
}
void
gimp_group_layer_suspend_mask (GimpGroupLayer *group,
gboolean push_undo)
{
GimpGroupLayerPrivate *private;
GimpItem *item;
g_return_if_fail (GIMP_IS_GROUP_LAYER (group));
private = GET_PRIVATE (group);
item = GIMP_ITEM (group);
/* avoid pushing an undo step if this is a nested suspend_mask() call, since
* the value of 'push_undo' in nested calls should be the same as that passed
* to the outermost call, and only pushing an undo step for the outermost
* call in this case is enough. we can't support cases where the values of
* 'push_undo' in nested calls are different in a meaningful way, and
* avoiding undo steps for nested calls prevents us from storing multiple
* references to the suspend mask buffer on the undo stack. while storing
* multiple references to the buffer doesn't waste any memory (since all the
* references are to the same buffer), it does cause the undo stack memory-
* usage estimation to overshoot, potentially resulting in undo steps being
* dropped unnecessarily.
*/
if (! gimp_item_is_attached (item) || private->suspend_mask > 0)
push_undo = FALSE;
if (push_undo)
gimp_image_undo_push_group_layer_suspend_mask (gimp_item_get_image (item),
NULL, group);
if (private->suspend_mask == 0)
{
if (gimp_layer_get_mask (GIMP_LAYER (group)))
{
GimpItem *mask = GIMP_ITEM (gimp_layer_get_mask (GIMP_LAYER (group)));
private->suspended_mask_buffer =
g_object_ref (gimp_drawable_get_buffer (GIMP_DRAWABLE (mask)));
private->suspended_mask_bounds.x = gimp_item_get_offset_x (mask);
private->suspended_mask_bounds.y = gimp_item_get_offset_y (mask);
private->suspended_mask_bounds.width = gimp_item_get_width (mask);
private->suspended_mask_bounds.height = gimp_item_get_height (mask);
}
else
{
private->suspended_mask_buffer = NULL;
}
}
private->suspend_mask++;
}
void
gimp_group_layer_resume_mask (GimpGroupLayer *group,
gboolean push_undo)
{
GimpGroupLayerPrivate *private;
GimpItem *item;
g_return_if_fail (GIMP_IS_GROUP_LAYER (group));
private = GET_PRIVATE (group);
g_return_if_fail (private->suspend_mask > 0);
item = GIMP_ITEM (group);
/* avoid pushing an undo step if this is a nested resume_mask() call. see
* the comment in gimp_group_layer_suspend_mask().
*/
if (! gimp_item_is_attached (item) || private->suspend_mask > 1)
push_undo = FALSE;
if (push_undo)
gimp_image_undo_push_group_layer_resume_mask (gimp_item_get_image (item),
NULL, group);
private->suspend_mask--;
if (private->suspend_mask == 0)
g_clear_object (&private->suspended_mask_buffer);
}
/* protected functions */
void
_gimp_group_layer_set_suspended_mask (GimpGroupLayer *group,
GeglBuffer *buffer,
const GeglRectangle *bounds)
{
GimpGroupLayerPrivate *private;
g_return_if_fail (GIMP_IS_GROUP_LAYER (group));
g_return_if_fail (buffer != NULL);
g_return_if_fail (bounds != NULL);
private = GET_PRIVATE (group);
g_return_if_fail (private->suspend_mask > 0);
g_object_ref (buffer);
g_clear_object (&private->suspended_mask_buffer);
private->suspended_mask_buffer = buffer;
private->suspended_mask_bounds = *bounds;
}
GeglBuffer *
_gimp_group_layer_get_suspended_mask (GimpGroupLayer *group,
GeglRectangle *bounds)
{
GimpGroupLayerPrivate *private;
GimpLayerMask *mask;
g_return_val_if_fail (GIMP_IS_GROUP_LAYER (group), NULL);
g_return_val_if_fail (bounds != NULL, NULL);
private = GET_PRIVATE (group);
mask = gimp_layer_get_mask (GIMP_LAYER (group));
g_return_val_if_fail (private->suspend_mask > 0, NULL);
if (mask &&
gimp_drawable_get_buffer (GIMP_DRAWABLE (mask)) !=
private->suspended_mask_buffer)
{
*bounds = private->suspended_mask_bounds;
return private->suspended_mask_buffer;
}
return NULL;
}
void
_gimp_group_layer_start_transform (GimpGroupLayer *group,
gboolean push_undo)
{
GimpGroupLayerPrivate *private;
GimpItem *item;
g_return_if_fail (GIMP_IS_GROUP_LAYER (group));
private = GET_PRIVATE (group);
item = GIMP_ITEM (group);
g_return_if_fail (private->suspend_mask == 0);
if (! gimp_item_is_attached (item))
push_undo = FALSE;
if (push_undo)
gimp_image_undo_push_group_layer_start_transform (gimp_item_get_image (item),
NULL, group);
private->transforming++;
}
void
_gimp_group_layer_end_transform (GimpGroupLayer *group,
gboolean push_undo)
{
GimpGroupLayerPrivate *private;
GimpItem *item;
g_return_if_fail (GIMP_IS_GROUP_LAYER (group));
private = GET_PRIVATE (group);
item = GIMP_ITEM (group);
g_return_if_fail (private->suspend_mask == 0);
g_return_if_fail (private->transforming > 0);
if (! gimp_item_is_attached (item))
push_undo = FALSE;
if (push_undo)
gimp_image_undo_push_group_layer_end_transform (gimp_item_get_image (item),
NULL, group);
private->transforming--;
if (private->transforming == 0)
gimp_group_layer_update_mask_size (GIMP_GROUP_LAYER (item));
}
/* private functions */
static void
gimp_group_layer_child_add (GimpContainer *container,
GimpLayer *child,
GimpGroupLayer *group)
{
gimp_group_layer_update (group);
if (gimp_filter_get_active (GIMP_FILTER (child)))
{
gimp_layer_update_effective_mode (GIMP_LAYER (group));
if (gimp_layer_get_excludes_backdrop (child))
gimp_layer_update_excludes_backdrop (GIMP_LAYER (group));
}
}
static void
gimp_group_layer_child_remove (GimpContainer *container,
GimpLayer *child,
GimpGroupLayer *group)
{
gimp_group_layer_update (group);
if (gimp_filter_get_active (GIMP_FILTER (child)))
{
gimp_layer_update_effective_mode (GIMP_LAYER (group));
if (gimp_layer_get_excludes_backdrop (child))
gimp_layer_update_excludes_backdrop (GIMP_LAYER (group));
}
}
static void
gimp_group_layer_child_move (GimpLayer *child,
GParamSpec *pspec,
GimpGroupLayer *group)
{
gimp_group_layer_update (group);
}
static void
gimp_group_layer_child_resize (GimpLayer *child,
GimpGroupLayer *group)
{
gimp_group_layer_update (group);
}
static void
gimp_group_layer_child_active_changed (GimpLayer *child,
GimpGroupLayer *group)
{
gimp_layer_update_effective_mode (GIMP_LAYER (group));
if (gimp_layer_get_excludes_backdrop (child))
gimp_layer_update_excludes_backdrop (GIMP_LAYER (group));
}
static void
gimp_group_layer_child_effective_mode_changed (GimpLayer *child,
GimpGroupLayer *group)
{
if (gimp_filter_get_active (GIMP_FILTER (child)))
gimp_layer_update_effective_mode (GIMP_LAYER (group));
}
static void
gimp_group_layer_child_excludes_backdrop_changed (GimpLayer *child,
GimpGroupLayer *group)
{
if (gimp_filter_get_active (GIMP_FILTER (child)))
gimp_layer_update_excludes_backdrop (GIMP_LAYER (group));
}
static void
gimp_group_layer_flush (GimpGroupLayer *group)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (group);
if (private->pass_through)
{
/* flush the projectable, not the pickable, because the source
* node of pass-through groups doesn't use the projection's
* buffer, hence there's no need to invalidate it synchronously.
*/
gimp_projectable_flush (GIMP_PROJECTABLE (group), TRUE);
}
else
{
/* make sure we have a buffer, and stop any idle rendering, which is
* initiated when a new buffer is allocated. the call to
* gimp_pickable_flush() below causes any pending idle rendering to
* finish synchronously, so this needs to happen before.
*/
gimp_pickable_get_buffer (GIMP_PICKABLE (private->projection));
gimp_projection_stop_rendering (private->projection);
/* flush the pickable not the projectable because flushing the
* pickable will finish all invalidation on the projection so it
* can be used as source (note that it will still be constructed
* when the actual read happens, so this it not a performance
* problem)
*/
gimp_pickable_flush (GIMP_PICKABLE (private->projection));
}
}
static void
gimp_group_layer_update (GimpGroupLayer *group)
{
if (GET_PRIVATE (group)->suspend_resize == 0)
{
gimp_group_layer_update_size (group);
}
}
static void
gimp_group_layer_update_size (GimpGroupLayer *group)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (group);
GimpItem *item = GIMP_ITEM (group);
GimpLayer *layer = GIMP_LAYER (group);
GimpItem *mask = GIMP_ITEM (gimp_layer_get_mask (layer));
GeglRectangle old_bounds;
GeglRectangle bounds;
GeglRectangle old_bounding_box;
GeglRectangle bounding_box;
gboolean first = TRUE;
gboolean size_changed;
gboolean resize_mask;
GList *list;
old_bounds.x = gimp_item_get_offset_x (item);
old_bounds.y = gimp_item_get_offset_y (item);
old_bounds.width = gimp_item_get_width (item);
old_bounds.height = gimp_item_get_height (item);
bounds.x = 0;
bounds.y = 0;
bounds.width = 1;
bounds.height = 1;
old_bounding_box = private->bounding_box;
bounding_box = bounds;
for (list = gimp_item_stack_get_item_iter (GIMP_ITEM_STACK (private->children));
list;
list = g_list_next (list))
{
GimpItem *child = list->data;
GeglRectangle child_bounds;
GeglRectangle child_bounding_box;
if (! gimp_viewable_get_size (GIMP_VIEWABLE (child),
&child_bounds.width, &child_bounds.height))
{
/* ignore children without content (empty group layers);
* see bug 777017
*/
continue;
}
gimp_item_get_offset (child, &child_bounds.x, &child_bounds.y);
child_bounding_box =
gimp_drawable_get_bounding_box (GIMP_DRAWABLE (child));
child_bounding_box.x += child_bounds.x;
child_bounding_box.y += child_bounds.y;
if (first)
{
bounds = child_bounds;
bounding_box = child_bounding_box;
first = FALSE;
}
else
{
gegl_rectangle_bounding_box (&bounds,
&bounds, &child_bounds);
gegl_rectangle_bounding_box (&bounding_box,
&bounding_box, &child_bounding_box);
}
}
bounding_box.x -= bounds.x;
bounding_box.y -= bounds.y;
size_changed = ! (gegl_rectangle_equal (&bounds, &old_bounds) &&
gegl_rectangle_equal (&bounding_box, &old_bounding_box));
resize_mask = mask && ! gegl_rectangle_equal (&bounds, &old_bounds);
/* if we show the mask, invalidate the old mask area */
if (resize_mask && gimp_layer_get_show_mask (layer))
{
gimp_drawable_update (GIMP_DRAWABLE (group),
gimp_item_get_offset_x (mask) - old_bounds.x,
gimp_item_get_offset_y (mask) - old_bounds.y,
gimp_item_get_width (mask),
gimp_item_get_height (mask));
}
if (private->reallocate_projection || size_changed)
{
GeglBuffer *buffer;
/* if the graph is already constructed, set the offset node's
* coordinates first, so the graph is in the right state when
* the projection is reallocated, see bug #730550.
*/
if (private->offset_node)
gegl_node_set (private->offset_node,
"x", (gdouble) -bounds.x,
"y", (gdouble) -bounds.y,
NULL);
/* update our offset *before* calling gimp_pickable_get_buffer(), so
* that if our graph isn't constructed yet, the offset node picks
* up the right coordinates in gimp_group_layer_get_graph().
*/
gimp_item_set_offset (item, bounds.x, bounds.y);
/* update the bounding box before updating the projection, so that it
* picks up the right size.
*/
private->bounding_box = bounding_box;
if (private->reallocate_projection)
{
private->reallocate_projection = FALSE;
gimp_projectable_structure_changed (GIMP_PROJECTABLE (group));
}
else
{
/* when there's no need to reallocate the projection, we call
* gimp_projectable_bounds_changed(), rather than structure_chaned(),
* so that the projection simply copies the old content over to the
* new buffer with an offset, rather than re-renders the graph.
*/
gimp_projectable_bounds_changed (GIMP_PROJECTABLE (group),
old_bounds.x, old_bounds.y);
}
buffer = gimp_pickable_get_buffer (GIMP_PICKABLE (private->projection));
gimp_drawable_set_buffer_full (GIMP_DRAWABLE (group),
FALSE, NULL,
buffer, &bounds,
FALSE /* don't update the drawable, the
* flush() below will take care of
* that.
*/);
gimp_group_layer_flush (group);
}
/* resize the mask if not transforming (in which case, GimpLayer takes care
* of the mask)
*/
if (resize_mask && ! private->transforming)
gimp_group_layer_update_mask_size (group);
/* if we show the mask, invalidate the new mask area */
if (resize_mask && gimp_layer_get_show_mask (layer))
{
gimp_drawable_update (GIMP_DRAWABLE (group),
gimp_item_get_offset_x (mask) - bounds.x,
gimp_item_get_offset_y (mask) - bounds.y,
gimp_item_get_width (mask),
gimp_item_get_height (mask));
}
}
static void
gimp_group_layer_update_mask_size (GimpGroupLayer *group)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (group);
GimpItem *item = GIMP_ITEM (group);
GimpItem *mask;
GeglBuffer *buffer;
GeglBuffer *mask_buffer;
GeglRectangle bounds;
GeglRectangle mask_bounds;
GeglRectangle copy_bounds;
gboolean intersect;
mask = GIMP_ITEM (gimp_layer_get_mask (GIMP_LAYER (group)));
if (! mask)
return;
bounds.x = gimp_item_get_offset_x (item);
bounds.y = gimp_item_get_offset_y (item);
bounds.width = gimp_item_get_width (item);
bounds.height = gimp_item_get_height (item);
mask_bounds.x = gimp_item_get_offset_x (mask);
mask_bounds.y = gimp_item_get_offset_y (mask);
mask_bounds.width = gimp_item_get_width (mask);
mask_bounds.height = gimp_item_get_height (mask);
if (gegl_rectangle_equal (&bounds, &mask_bounds))
return;
buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0, bounds.width, bounds.height),
gimp_drawable_get_format (GIMP_DRAWABLE (mask)));
if (private->suspended_mask_buffer)
{
/* copy the suspended mask into the new mask */
mask_buffer = private->suspended_mask_buffer;
mask_bounds = private->suspended_mask_bounds;
}
else
{
/* copy the old mask into the new mask */
mask_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (mask));
}
intersect = gimp_rectangle_intersect (bounds.x,
bounds.y,
bounds.width,
bounds.height,
mask_bounds.x,
mask_bounds.y,
mask_bounds.width,
mask_bounds.height,
&copy_bounds.x,
&copy_bounds.y,
&copy_bounds.width,
&copy_bounds.height);
if (intersect)
{
gimp_gegl_buffer_copy (mask_buffer,
GEGL_RECTANGLE (copy_bounds.x - mask_bounds.x,
copy_bounds.y - mask_bounds.y,
copy_bounds.width,
copy_bounds.height),
GEGL_ABYSS_NONE,
buffer,
GEGL_RECTANGLE (copy_bounds.x - bounds.x,
copy_bounds.y - bounds.y,
copy_bounds.width,
copy_bounds.height));
}
gimp_drawable_set_buffer_full (GIMP_DRAWABLE (mask),
FALSE, NULL,
buffer, &bounds,
TRUE);
g_object_unref (buffer);
}
static void
gimp_group_layer_update_source_node (GimpGroupLayer *group)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (group);
GeglNode *input;
GeglNode *output;
if (private->source_node == NULL)
return;
input = gegl_node_get_input_proxy (private->source_node, "input");
output = gegl_node_get_output_proxy (private->source_node, "output");
if (private->pass_through)
{
gegl_node_connect_to (input, "output",
private->graph, "input");
gegl_node_connect_to (private->graph, "output",
output, "input");
}
else
{
gegl_node_disconnect (private->graph, "input");
gegl_node_connect_to (private->parent_source_node, "output",
output, "input");
}
}
static void
gimp_group_layer_update_mode_node (GimpGroupLayer *group)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (group);
GeglNode *node;
GeglNode *input;
GeglNode *mode_node;
node = gimp_filter_get_node (GIMP_FILTER (group));
input = gegl_node_get_input_proxy (node, "input");
mode_node = gimp_drawable_get_mode_node (GIMP_DRAWABLE (group));
if (private->pass_through &&
gimp_layer_get_excludes_backdrop (GIMP_LAYER (group)))
{
gegl_node_disconnect (mode_node, "input");
}
else
{
gegl_node_connect_to (input, "output",
mode_node, "input");
}
}
static void
gimp_group_layer_stack_update (GimpDrawableStack *stack,
gint x,
gint y,
gint width,
gint height,
GimpGroupLayer *group)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (group);
#if 0
g_printerr ("%s (%s) %d, %d (%d, %d)\n",
G_STRFUNC, gimp_object_get_name (group),
x, y, width, height);
#endif
if (! private->direct_update)
{
/* the layer stack's update signal speaks in image coordinates,
* pass to the projection as-is.
*/
gimp_projectable_invalidate (GIMP_PROJECTABLE (group),
x, y, width, height);
gimp_group_layer_flush (group);
}
if (private->direct_update || private->pass_through)
{
/* the layer stack's update signal speaks in image coordinates,
* transform to layer coordinates when emitting our own update signal.
*/
gimp_drawable_update (GIMP_DRAWABLE (group),
x - gimp_item_get_offset_x (GIMP_ITEM (group)),
y - gimp_item_get_offset_y (GIMP_ITEM (group)),
width, height);
}
}
static void
gimp_group_layer_proj_update (GimpProjection *proj,
gboolean now,
gint x,
gint y,
gint width,
gint height,
GimpGroupLayer *group)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (group);
#if 0
g_printerr ("%s (%s) %d, %d (%d, %d)\n",
G_STRFUNC, gimp_object_get_name (group),
x, y, width, height);
#endif
if (! private->pass_through)
{
/* TODO: groups can currently have a gegl:transform op attached as a filter
* when using a transform tool, in which case the updated region needs
* undergo the same transformation. more generally, when a drawable has
* filters they may influence the area affected by drawable updates.
*
* this needs to be addressed much more generally at some point, but for now
* we just resort to updating the entire group when it has a filter (i.e.,
* when it's being used with a transform tool). we restrict this to groups,
* and don't do this more generally in gimp_drawable_update(), because this
* negatively impacts the performance of the warp tool, which does perform
* accurate drawable updates while using a filter.
*/
if (gimp_drawable_has_filters (GIMP_DRAWABLE (group)))
{
width = -1;
height = -1;
}
/* the projection speaks in image coordinates, transform to layer
* coordinates when emitting our own update signal.
*/
gimp_drawable_update (GIMP_DRAWABLE (group),
x - gimp_item_get_offset_x (GIMP_ITEM (group)),
y - gimp_item_get_offset_y (GIMP_ITEM (group)),
width, height);
}
}
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