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gimp/app/core/gimpgrouplayer.c

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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 "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;
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;
gint reallocate_width;
gint reallocate_height;
};
#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 gint64 gimp_group_layer_estimate_memsize (GimpDrawable *drawable,
GimpComponentType component_type,
gint width,
gint height);
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 *src_profile,
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 void gimp_group_layer_mask_changed (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 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 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->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->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->mask_changed = gimp_group_layer_mask_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_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_size = (void (*) (GimpProjectable*, gint*, gint*)) gimp_viewable_get_size;
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->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, "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);
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);
if (private->reallocate_width != 0 &&
private->reallocate_height != 0)
{
*width = private->reallocate_width;
*height = private->reallocate_height;
return TRUE;
}
/* return the size only if there are children... */
if (gimp_item_stack_get_item_iter (GIMP_ITEM_STACK (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 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_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++;
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);
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);
}
/* 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,
gimp_image_get_layer_space (image));
case GIMP_GRAY:
return gimp_image_get_format (image, GIMP_GRAY, precision, TRUE,
gimp_image_get_layer_space (image));
}
g_return_val_if_reached (NULL);
}
static void
gimp_group_layer_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)
{
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);
}
/* Force allocation of a same-size projection, in case the group
* layer is empty
*/
private->reallocate_width = gimp_item_get_width (GIMP_ITEM (group));
private->reallocate_height = gimp_item_get_height (GIMP_ITEM (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,
gimp_item_get_offset_x (GIMP_ITEM (group)),
gimp_item_get_offset_y (GIMP_ITEM (group)),
TRUE);
/* reset, the actual format is right now */
private->convert_format = NULL;
private->reallocate_width = 0;
private->reallocate_height = 0;
}
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;
gimp_layer_get_effective_mode (layer, &mode, NULL, NULL, NULL);
pass_through = (mode == GIMP_LAYER_MODE_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;
gimp_group_layer_update_source_node (group);
gimp_group_layer_update_mode_node (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 void
gimp_group_layer_mask_changed (GimpLayer *layer)
{
g_warn_if_fail (GET_PRIVATE (layer)->suspend_mask == 0);
gimp_layer_update_effective_mode (layer);
if (GIMP_LAYER_CLASS (parent_class)->mask_changed)
GIMP_LAYER_CLASS (parent_class)->mask_changed (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 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)
{
if (first ||
(gimp_layer_get_opacity (layer) == GIMP_OPACITY_OPAQUE &&
! gimp_layer_get_mask (layer)) ||
*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 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 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));
gint old_x = gimp_item_get_offset_x (item);
gint old_y = gimp_item_get_offset_y (item);
gint old_width = gimp_item_get_width (item);
gint old_height = gimp_item_get_height (item);
gint x = 0;
gint y = 0;
gint width = 1;
gint height = 1;
gboolean first = TRUE;
gboolean size_changed;
gboolean resize_mask;
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;
gint child_width;
gint child_height;
if (! gimp_viewable_get_size (GIMP_VIEWABLE (child),
&child_width, &child_height))
{
/* ignore children without content (empty group layers);
* see bug 777017
*/
continue;
}
if (first)
{
x = gimp_item_get_offset_x (child);
y = gimp_item_get_offset_y (child);
width = child_width;
height = child_height;
first = FALSE;
}
else
{
gimp_rectangle_union (x, y, width, height,
gimp_item_get_offset_x (child),
gimp_item_get_offset_y (child),
child_width,
child_height,
&x, &y, &width, &height);
}
}
size_changed = (x != old_x ||
y != old_y ||
width != old_width ||
height != old_height);
resize_mask = mask && size_changed;
/* 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_x,
gimp_item_get_offset_y (mask) - old_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) -x,
"y", (gdouble) -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, x, y);
/* temporarily change the return values of gimp_viewable_get_size()
* so the projection allocates itself correctly
*/
private->reallocate_width = width;
private->reallocate_height = height;
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_x, old_y, old_width, old_height);
}
buffer = gimp_pickable_get_buffer (GIMP_PICKABLE (private->projection));
gimp_drawable_set_buffer_full (GIMP_DRAWABLE (group),
FALSE, NULL,
buffer,
x, y,
FALSE /* don't update the drawable, the
* flush() below will take care of
* that.
*/);
gimp_group_layer_flush (group);
/* reset, the actual size is correct now */
private->reallocate_width = 0;
private->reallocate_height = 0;
}
/* 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) - x,
gimp_item_get_offset_y (mask) - 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.x, bounds.y,
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)
{
/* 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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