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gimp/app/core/gimplayerstack.c

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app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
2017-05-09 04:02:37 +08:00
/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis
*
* gimplayerstack.c
* Copyright (C) 2017 Ell
*
* 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
Change the license URL from http://www.gnu.org/licenses/ to https://
2018-07-12 05:27:07 +08:00
* along with this program. If not, see <https://www.gnu.org/licenses/>.
app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
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*/
#include "config.h"
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gegl.h>
#include "core-types.h"
#include "gimplayer.h"
#include "gimplayerstack.h"
/* local function prototypes */
static void gimp_layer_stack_constructed (GObject *object);
static void gimp_layer_stack_add (GimpContainer *container,
GimpObject *object);
static void gimp_layer_stack_remove (GimpContainer *container,
GimpObject *object);
static void gimp_layer_stack_reorder (GimpContainer *container,
GimpObject *object,
gint new_index);
app: add GimpFilter::active property; move ::visible to GimpItem Add an "active" property to GimpFilter, which replaces its "visible" property. The new property assumes the lower-level role "visible" had -- controlling whether the filter has any effect as part of its parent filter-stack. Add a "visible" property to GimpItem, separate from the "active" property, which assumes the higher-level role "visible" had -- controlling whether the item is considered "visible", as per the GUI. By default, the item's "visible" property is bound to the filter's "active" property, so that changes in visibility directly affect the filter's "activeness"; this binding can be controlled using the new gimp_item_bind_visible_to_active() function. This distinction is currently necessary for floating selections. Floating selection layers must not be active in their parent stack, regardless of their visibility, in particular, so that their mode node doesn't hide the entire backdrop when their composite mode excludes the backdrop (i.e., when it's dst-atop or src-in). Instead, their visibility should affect the activeness of the floating-selection filter of the drawable they're attached to. This is handled by the next commit.
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static void gimp_layer_stack_layer_active (GimpLayer *layer,
app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
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GimpLayerStack *stack);
static void gimp_layer_stack_layer_excludes_backdrop (GimpLayer *layer,
GimpLayerStack *stack);
static void gimp_layer_stack_update_backdrop (GimpLayerStack *stack,
GimpLayer *layer,
app: add GimpFilter::active property; move ::visible to GimpItem Add an "active" property to GimpFilter, which replaces its "visible" property. The new property assumes the lower-level role "visible" had -- controlling whether the filter has any effect as part of its parent filter-stack. Add a "visible" property to GimpItem, separate from the "active" property, which assumes the higher-level role "visible" had -- controlling whether the item is considered "visible", as per the GUI. By default, the item's "visible" property is bound to the filter's "active" property, so that changes in visibility directly affect the filter's "activeness"; this binding can be controlled using the new gimp_item_bind_visible_to_active() function. This distinction is currently necessary for floating selections. Floating selection layers must not be active in their parent stack, regardless of their visibility, in particular, so that their mode node doesn't hide the entire backdrop when their composite mode excludes the backdrop (i.e., when it's dst-atop or src-in). Instead, their visibility should affect the activeness of the floating-selection filter of the drawable they're attached to. This is handled by the next commit.
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gboolean ignore_active,
app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
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gboolean ignore_excludes_backdrop);
static void gimp_layer_stack_update_range (GimpLayerStack *stack,
gint first,
gint last);
G_DEFINE_TYPE (GimpLayerStack, gimp_layer_stack, GIMP_TYPE_DRAWABLE_STACK)
#define parent_class gimp_layer_stack_parent_class
static void
gimp_layer_stack_class_init (GimpLayerStackClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpContainerClass *container_class = GIMP_CONTAINER_CLASS (klass);
object_class->constructed = gimp_layer_stack_constructed;
container_class->add = gimp_layer_stack_add;
container_class->remove = gimp_layer_stack_remove;
container_class->reorder = gimp_layer_stack_reorder;
}
static void
gimp_layer_stack_init (GimpLayerStack *stack)
{
}
static void
gimp_layer_stack_constructed (GObject *object)
{
GimpContainer *container = GIMP_CONTAINER (object);
G_OBJECT_CLASS (parent_class)->constructed (object);
app: replace all g_assert() by the newly added gimp_assert() which is just a #define to g_assert for now, but can now easily be turned into something that does some nicer debugging using our new stack trace infrastructure. This commit also reverts all constructed() functions to use assert again.
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gimp_assert (g_type_is_a (gimp_container_get_children_type (container),
GIMP_TYPE_LAYER));
app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
2017-05-09 04:02:37 +08:00
app: add GimpFilter::active property; move ::visible to GimpItem Add an "active" property to GimpFilter, which replaces its "visible" property. The new property assumes the lower-level role "visible" had -- controlling whether the filter has any effect as part of its parent filter-stack. Add a "visible" property to GimpItem, separate from the "active" property, which assumes the higher-level role "visible" had -- controlling whether the item is considered "visible", as per the GUI. By default, the item's "visible" property is bound to the filter's "active" property, so that changes in visibility directly affect the filter's "activeness"; this binding can be controlled using the new gimp_item_bind_visible_to_active() function. This distinction is currently necessary for floating selections. Floating selection layers must not be active in their parent stack, regardless of their visibility, in particular, so that their mode node doesn't hide the entire backdrop when their composite mode excludes the backdrop (i.e., when it's dst-atop or src-in). Instead, their visibility should affect the activeness of the floating-selection filter of the drawable they're attached to. This is handled by the next commit.
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gimp_container_add_handler (container, "active-changed",
G_CALLBACK (gimp_layer_stack_layer_active),
app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
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container);
gimp_container_add_handler (container, "excludes-backdrop-changed",
G_CALLBACK (gimp_layer_stack_layer_excludes_backdrop),
container);
}
static void
gimp_layer_stack_add (GimpContainer *container,
GimpObject *object)
{
GimpLayerStack *stack = GIMP_LAYER_STACK (container);
GIMP_CONTAINER_CLASS (parent_class)->add (container, object);
gimp_layer_stack_update_backdrop (stack, GIMP_LAYER (object), FALSE, FALSE);
}
static void
gimp_layer_stack_remove (GimpContainer *container,
GimpObject *object)
{
GimpLayerStack *stack = GIMP_LAYER_STACK (container);
app: update layer backdrop only after removing from stack When a layer is removed from a layer stack, and its backdrop needs invalidating, emit the UPDATE signals for the backdrop only after the layer has been removed from the container.
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gboolean update_backdrop;
gint index;
app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
2017-05-09 04:02:37 +08:00
app: add GimpFilter::active property; move ::visible to GimpItem Add an "active" property to GimpFilter, which replaces its "visible" property. The new property assumes the lower-level role "visible" had -- controlling whether the filter has any effect as part of its parent filter-stack. Add a "visible" property to GimpItem, separate from the "active" property, which assumes the higher-level role "visible" had -- controlling whether the item is considered "visible", as per the GUI. By default, the item's "visible" property is bound to the filter's "active" property, so that changes in visibility directly affect the filter's "activeness"; this binding can be controlled using the new gimp_item_bind_visible_to_active() function. This distinction is currently necessary for floating selections. Floating selection layers must not be active in their parent stack, regardless of their visibility, in particular, so that their mode node doesn't hide the entire backdrop when their composite mode excludes the backdrop (i.e., when it's dst-atop or src-in). Instead, their visibility should affect the activeness of the floating-selection filter of the drawable they're attached to. This is handled by the next commit.
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update_backdrop = gimp_filter_get_active (GIMP_FILTER (object)) &&
app: update layer backdrop only after removing from stack When a layer is removed from a layer stack, and its backdrop needs invalidating, emit the UPDATE signals for the backdrop only after the layer has been removed from the container.
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gimp_layer_get_excludes_backdrop (GIMP_LAYER (object));
if (update_backdrop)
index = gimp_container_get_child_index (container, object);
app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
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GIMP_CONTAINER_CLASS (parent_class)->remove (container, object);
app: update layer backdrop only after removing from stack When a layer is removed from a layer stack, and its backdrop needs invalidating, emit the UPDATE signals for the backdrop only after the layer has been removed from the container.
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if (update_backdrop)
gimp_layer_stack_update_range (stack, index, -1);
app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
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}
static void
gimp_layer_stack_reorder (GimpContainer *container,
GimpObject *object,
gint new_index)
{
GimpLayerStack *stack = GIMP_LAYER_STACK (container);
app: update layer backdrop only after removing from stack When a layer is removed from a layer stack, and its backdrop needs invalidating, emit the UPDATE signals for the backdrop only after the layer has been removed from the container.
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gboolean update_backdrop;
app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
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gint index;
app: add GimpFilter::active property; move ::visible to GimpItem Add an "active" property to GimpFilter, which replaces its "visible" property. The new property assumes the lower-level role "visible" had -- controlling whether the filter has any effect as part of its parent filter-stack. Add a "visible" property to GimpItem, separate from the "active" property, which assumes the higher-level role "visible" had -- controlling whether the item is considered "visible", as per the GUI. By default, the item's "visible" property is bound to the filter's "active" property, so that changes in visibility directly affect the filter's "activeness"; this binding can be controlled using the new gimp_item_bind_visible_to_active() function. This distinction is currently necessary for floating selections. Floating selection layers must not be active in their parent stack, regardless of their visibility, in particular, so that their mode node doesn't hide the entire backdrop when their composite mode excludes the backdrop (i.e., when it's dst-atop or src-in). Instead, their visibility should affect the activeness of the floating-selection filter of the drawable they're attached to. This is handled by the next commit.
2017-12-06 02:46:50 +08:00
update_backdrop = gimp_filter_get_active (GIMP_FILTER (object)) &&
app: update layer backdrop only after removing from stack When a layer is removed from a layer stack, and its backdrop needs invalidating, emit the UPDATE signals for the backdrop only after the layer has been removed from the container.
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gimp_layer_get_excludes_backdrop (GIMP_LAYER (object));
app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
2017-05-09 04:02:37 +08:00
app: update layer backdrop only after removing from stack When a layer is removed from a layer stack, and its backdrop needs invalidating, emit the UPDATE signals for the backdrop only after the layer has been removed from the container.
2017-05-13 03:34:28 +08:00
if (update_backdrop)
app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
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index = gimp_container_get_child_index (container, object);
GIMP_CONTAINER_CLASS (parent_class)->reorder (container, object, new_index);
app: update layer backdrop only after removing from stack When a layer is removed from a layer stack, and its backdrop needs invalidating, emit the UPDATE signals for the backdrop only after the layer has been removed from the container.
2017-05-13 03:34:28 +08:00
if (update_backdrop)
app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
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gimp_layer_stack_update_range (stack, index, new_index);
}
/* public functions */
GimpContainer *
gimp_layer_stack_new (GType layer_type)
{
g_return_val_if_fail (g_type_is_a (layer_type, GIMP_TYPE_LAYER), NULL);
return g_object_new (GIMP_TYPE_LAYER_STACK,
"name", g_type_name (layer_type),
"children-type", layer_type,
"policy", GIMP_CONTAINER_POLICY_STRONG,
NULL);
}
/* private functions */
static void
app: add GimpFilter::active property; move ::visible to GimpItem Add an "active" property to GimpFilter, which replaces its "visible" property. The new property assumes the lower-level role "visible" had -- controlling whether the filter has any effect as part of its parent filter-stack. Add a "visible" property to GimpItem, separate from the "active" property, which assumes the higher-level role "visible" had -- controlling whether the item is considered "visible", as per the GUI. By default, the item's "visible" property is bound to the filter's "active" property, so that changes in visibility directly affect the filter's "activeness"; this binding can be controlled using the new gimp_item_bind_visible_to_active() function. This distinction is currently necessary for floating selections. Floating selection layers must not be active in their parent stack, regardless of their visibility, in particular, so that their mode node doesn't hide the entire backdrop when their composite mode excludes the backdrop (i.e., when it's dst-atop or src-in). Instead, their visibility should affect the activeness of the floating-selection filter of the drawable they're attached to. This is handled by the next commit.
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gimp_layer_stack_layer_active (GimpLayer *layer,
GimpLayerStack *stack)
app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
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{
gimp_layer_stack_update_backdrop (stack, layer, TRUE, FALSE);
}
static void
gimp_layer_stack_layer_excludes_backdrop (GimpLayer *layer,
GimpLayerStack *stack)
{
gimp_layer_stack_update_backdrop (stack, layer, FALSE, TRUE);
}
static void
gimp_layer_stack_update_backdrop (GimpLayerStack *stack,
GimpLayer *layer,
app: add GimpFilter::active property; move ::visible to GimpItem Add an "active" property to GimpFilter, which replaces its "visible" property. The new property assumes the lower-level role "visible" had -- controlling whether the filter has any effect as part of its parent filter-stack. Add a "visible" property to GimpItem, separate from the "active" property, which assumes the higher-level role "visible" had -- controlling whether the item is considered "visible", as per the GUI. By default, the item's "visible" property is bound to the filter's "active" property, so that changes in visibility directly affect the filter's "activeness"; this binding can be controlled using the new gimp_item_bind_visible_to_active() function. This distinction is currently necessary for floating selections. Floating selection layers must not be active in their parent stack, regardless of their visibility, in particular, so that their mode node doesn't hide the entire backdrop when their composite mode excludes the backdrop (i.e., when it's dst-atop or src-in). Instead, their visibility should affect the activeness of the floating-selection filter of the drawable they're attached to. This is handled by the next commit.
2017-12-06 02:46:50 +08:00
gboolean ignore_active,
app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
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gboolean ignore_excludes_backdrop)
{
app: add GimpFilter::active property; move ::visible to GimpItem Add an "active" property to GimpFilter, which replaces its "visible" property. The new property assumes the lower-level role "visible" had -- controlling whether the filter has any effect as part of its parent filter-stack. Add a "visible" property to GimpItem, separate from the "active" property, which assumes the higher-level role "visible" had -- controlling whether the item is considered "visible", as per the GUI. By default, the item's "visible" property is bound to the filter's "active" property, so that changes in visibility directly affect the filter's "activeness"; this binding can be controlled using the new gimp_item_bind_visible_to_active() function. This distinction is currently necessary for floating selections. Floating selection layers must not be active in their parent stack, regardless of their visibility, in particular, so that their mode node doesn't hide the entire backdrop when their composite mode excludes the backdrop (i.e., when it's dst-atop or src-in). Instead, their visibility should affect the activeness of the floating-selection filter of the drawable they're attached to. This is handled by the next commit.
2017-12-06 02:46:50 +08:00
if ((ignore_active || gimp_filter_get_active (GIMP_FILTER (layer))) &&
app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
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(ignore_excludes_backdrop || gimp_layer_get_excludes_backdrop (layer)))
{
gint index;
index = gimp_container_get_child_index (GIMP_CONTAINER (stack),
GIMP_OBJECT (layer));
app: don't invalidate layer when invalidating its backdrop Harmless, but unnecessary.
2017-05-13 03:51:36 +08:00
gimp_layer_stack_update_range (stack, index + 1, -1);
app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
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}
}
static void
gimp_layer_stack_update_range (GimpLayerStack *stack,
gint first,
gint last)
{
GList *iter;
app: all remaining g_assert() replaced by critical warning and return... ... in app/core. Continuing on my crusade against asserting and crashing GIMP.
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g_return_if_fail (first >= 0 && last >= -1);
app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
2017-05-09 04:02:37 +08:00
/* if the range is reversed, flip first and last; note that last == -1 is
* used to update all layers from first onward.
*/
if (last >= 0 && last < first)
{
gint temp = first;
first = last + 1;
last = temp + 1;
}
iter = gimp_item_stack_get_item_iter (GIMP_ITEM_STACK (stack));
for (iter = g_list_nth (iter, first);
iter && first != last;
iter = g_list_next (iter), first++)
{
GimpItem *item = iter->data;
app: add GimpFilter::active property; move ::visible to GimpItem Add an "active" property to GimpFilter, which replaces its "visible" property. The new property assumes the lower-level role "visible" had -- controlling whether the filter has any effect as part of its parent filter-stack. Add a "visible" property to GimpItem, separate from the "active" property, which assumes the higher-level role "visible" had -- controlling whether the item is considered "visible", as per the GUI. By default, the item's "visible" property is bound to the filter's "active" property, so that changes in visibility directly affect the filter's "activeness"; this binding can be controlled using the new gimp_item_bind_visible_to_active() function. This distinction is currently necessary for floating selections. Floating selection layers must not be active in their parent stack, regardless of their visibility, in particular, so that their mode node doesn't hide the entire backdrop when their composite mode excludes the backdrop (i.e., when it's dst-atop or src-in). Instead, their visibility should affect the activeness of the floating-selection filter of the drawable they're attached to. This is handled by the next commit.
2017-12-06 02:46:50 +08:00
if (gimp_filter_get_active (GIMP_FILTER (item)))
app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
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{
app: maintain drawable bounding box separately from its logical boundary Maintain the bounding box of drawables (i.e., the bounds of their actual rendered content) separately from their logical boundary (as shown in the UI). The bounding box is calculated through the new GimpDrawable::get_bounding_box() virtual function, which has a corresponding gimp_drawable_get_bounding_box() function; the default implementation simply returns the drawable's logical boundary. The bounding box is specified in drawable coordinates, i.e., it's not affected by the drawable's offset. The bounding box is recalculated through gimp_drawable_update_bounding_box(), which should be called whenever a change may affect the bounding box (for example, when setting a new buffer, as done implicitly by GimpDrawable's ::set_buffer() implementation, or when a drawable filter's properties change, as will be done by GimpDrawableFilter in a following commit). When the bounding box changes, the affected regions of the drawable are updated, and the GimpDrawable::bounding-box-changed signal is emitted. When gimp_drawable_update() is called with negative width/height values, the entire drawable's bounding box is updated, rather than only its logical boundary. Likewise, GimpDrawableStack and GimpLayerStack are adapted to use the bounding box, instead of the logical bounds, when updating the drawable's area.
2019-08-02 02:52:40 +08:00
GeglRectangle bounding_box;
app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
2017-05-09 04:02:37 +08:00
app: maintain drawable bounding box separately from its logical boundary Maintain the bounding box of drawables (i.e., the bounds of their actual rendered content) separately from their logical boundary (as shown in the UI). The bounding box is calculated through the new GimpDrawable::get_bounding_box() virtual function, which has a corresponding gimp_drawable_get_bounding_box() function; the default implementation simply returns the drawable's logical boundary. The bounding box is specified in drawable coordinates, i.e., it's not affected by the drawable's offset. The bounding box is recalculated through gimp_drawable_update_bounding_box(), which should be called whenever a change may affect the bounding box (for example, when setting a new buffer, as done implicitly by GimpDrawable's ::set_buffer() implementation, or when a drawable filter's properties change, as will be done by GimpDrawableFilter in a following commit). When the bounding box changes, the affected regions of the drawable are updated, and the GimpDrawable::bounding-box-changed signal is emitted. When gimp_drawable_update() is called with negative width/height values, the entire drawable's bounding box is updated, rather than only its logical boundary. Likewise, GimpDrawableStack and GimpLayerStack are adapted to use the bounding box, instead of the logical bounds, when updating the drawable's area.
2019-08-02 02:52:40 +08:00
bounding_box = gimp_drawable_get_bounding_box (GIMP_DRAWABLE (item));
bounding_box.x += gimp_item_get_offset_x (item);
bounding_box.y += gimp_item_get_offset_y (item);
app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
2017-05-09 04:02:37 +08:00
gimp_drawable_stack_update (GIMP_DRAWABLE_STACK (stack),
app: maintain drawable bounding box separately from its logical boundary Maintain the bounding box of drawables (i.e., the bounds of their actual rendered content) separately from their logical boundary (as shown in the UI). The bounding box is calculated through the new GimpDrawable::get_bounding_box() virtual function, which has a corresponding gimp_drawable_get_bounding_box() function; the default implementation simply returns the drawable's logical boundary. The bounding box is specified in drawable coordinates, i.e., it's not affected by the drawable's offset. The bounding box is recalculated through gimp_drawable_update_bounding_box(), which should be called whenever a change may affect the bounding box (for example, when setting a new buffer, as done implicitly by GimpDrawable's ::set_buffer() implementation, or when a drawable filter's properties change, as will be done by GimpDrawableFilter in a following commit). When the bounding box changes, the affected regions of the drawable are updated, and the GimpDrawable::bounding-box-changed signal is emitted. When gimp_drawable_update() is called with negative width/height values, the entire drawable's bounding box is updated, rather than only its logical boundary. Likewise, GimpDrawableStack and GimpLayerStack are adapted to use the bounding box, instead of the logical bounds, when updating the drawable's area.
2019-08-02 02:52:40 +08:00
bounding_box.x, bounding_box.y,
bounding_box.width, bounding_box.height);
app: add GimpLayerStack A subclass of GimpDrawableStack, for layer stacks. Invalidates the layers' backdrop as/when necessary, according to the value of their excludes_backdrop property. Make gimp_drawable_stack_update() protected, instead of private, so that we can use it in GimpLayerStack.
2017-05-09 04:02:37 +08:00
}
}
}