Commit 07ac78ef authored by Ell's avatar Ell

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.
parent a0510022
......@@ -308,6 +308,8 @@ libappcore_a_sources = \
gimplayermaskundo.h \
gimplayerpropundo.c \
gimplayerpropundo.h \
gimplayerstack.c \
gimplayerstack.h \
gimplayerundo.c \
gimplayerundo.h \
gimplist.c \
......
......@@ -98,6 +98,7 @@ typedef struct _GimpDrawableStack GimpDrawableStack;
typedef struct _GimpFilteredContainer GimpFilteredContainer;
typedef struct _GimpFilterStack GimpFilterStack;
typedef struct _GimpItemStack GimpItemStack;
typedef struct _GimpLayerStack GimpLayerStack;
typedef struct _GimpTaggedContainer GimpTaggedContainer;
......
......@@ -49,11 +49,6 @@ static void gimp_drawable_stack_reorder (GimpContainer *container
GimpObject *object,
gint new_index);
static void gimp_drawable_stack_update (GimpDrawableStack *stack,
gint x,
gint y,
gint width,
gint height);
static void gimp_drawable_stack_drawable_update (GimpItem *item,
gint x,
gint y,
......@@ -173,19 +168,24 @@ gimp_drawable_stack_new (GType drawable_type)
}
/* private functions */
/* protected functions */
static void
void
gimp_drawable_stack_update (GimpDrawableStack *stack,
gint x,
gint y,
gint width,
gint height)
{
g_return_if_fail (GIMP_IS_DRAWABLE_STACK (stack));
g_signal_emit (stack, stack_signals[UPDATE], 0,
x, y, width, height);
}
/* private functions */
static void
gimp_drawable_stack_drawable_update (GimpItem *item,
gint x,
......
......@@ -51,7 +51,16 @@ struct _GimpDrawableStackClass
GType gimp_drawable_stack_get_type (void) G_GNUC_CONST;
GimpContainer * gimp_drawable_stack_new (GType drawable_type);
GimpContainer * gimp_drawable_stack_new (GType drawable_type);
/* protected */
void gimp_drawable_stack_update (GimpDrawableStack *stack,
gint x,
gint y,
gint width,
gint height);
#endif /* __GIMP_DRAWABLE_STACK_H__ */
......@@ -35,7 +35,7 @@
#include "gimpgrouplayer.h"
#include "gimpimage.h"
#include "gimpimage-undo-push.h"
#include "gimpdrawablestack.h"
#include "gimplayerstack.h"
#include "gimppickable.h"
#include "gimpprojectable.h"
#include "gimpprojection.h"
......@@ -261,7 +261,7 @@ gimp_group_layer_init (GimpGroupLayer *group)
{
GimpGroupLayerPrivate *private = GET_PRIVATE (group);
private->children = gimp_drawable_stack_new (GIMP_TYPE_LAYER);
private->children = gimp_layer_stack_new (GIMP_TYPE_LAYER);
private->expanded = TRUE;
g_signal_connect (private->children, "add",
......
......@@ -64,6 +64,7 @@
#include "gimplayer.h"
#include "gimplayer-floating-selection.h"
#include "gimplayermask.h"
#include "gimplayerstack.h"
#include "gimpmarshal.h"
#include "gimpparasitelist.h"
#include "gimppickable.h"
......@@ -728,7 +729,7 @@ gimp_image_init (GimpImage *image)
private->sample_points = NULL;
private->layers = gimp_item_tree_new (image,
GIMP_TYPE_DRAWABLE_STACK,
GIMP_TYPE_LAYER_STACK,
GIMP_TYPE_LAYER);
private->channels = gimp_item_tree_new (image,
GIMP_TYPE_DRAWABLE_STACK,
......
/* 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
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#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);
static void gimp_layer_stack_layer_visible (GimpLayer *layer,
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,
gboolean ignore_visible,
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);
g_assert (g_type_is_a (gimp_container_get_children_type (container),
GIMP_TYPE_LAYER));
gimp_container_add_handler (container, "visibility-changed",
G_CALLBACK (gimp_layer_stack_layer_visible),
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);
gimp_layer_stack_update_backdrop (stack, GIMP_LAYER (object), FALSE, FALSE);
GIMP_CONTAINER_CLASS (parent_class)->remove (container, object);
}
static void
gimp_layer_stack_reorder (GimpContainer *container,
GimpObject *object,
gint new_index)
{
GimpLayerStack *stack = GIMP_LAYER_STACK (container);
gboolean excludes_backdrop;
gint index;
excludes_backdrop = gimp_item_get_visible (GIMP_ITEM (object)) &&
gimp_layer_get_excludes_backdrop (GIMP_LAYER (object));
if (excludes_backdrop)
index = gimp_container_get_child_index (container, object);
GIMP_CONTAINER_CLASS (parent_class)->reorder (container, object, new_index);
if (excludes_backdrop)
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
gimp_layer_stack_layer_visible (GimpLayer *layer,
GimpLayerStack *stack)
{
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,
gboolean ignore_visible,
gboolean ignore_excludes_backdrop)
{
if ((ignore_visible || gimp_item_get_visible (GIMP_ITEM (layer))) &&
(ignore_excludes_backdrop || gimp_layer_get_excludes_backdrop (layer)))
{
gint index;
index = gimp_container_get_child_index (GIMP_CONTAINER (stack),
GIMP_OBJECT (layer));
gimp_layer_stack_update_range (stack, index, -1);
}
}
static void
gimp_layer_stack_update_range (GimpLayerStack *stack,
gint first,
gint last)
{
GList *iter;
g_assert (first >= 0 && last >= -1);
/* 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;
if (gimp_item_get_visible (item))
{
gint offset_x;
gint offset_y;
gimp_item_get_offset (item, &offset_x, &offset_y);
gimp_drawable_stack_update (GIMP_DRAWABLE_STACK (stack),
offset_x, offset_y,
gimp_item_get_width (item),
gimp_item_get_height (item));
}
}
}
/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis
*
* gimplayerstack.h
* 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
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __GIMP_LAYER_STACK_H__
#define __GIMP_LAYER_STACK_H__
#include "gimpdrawablestack.h"
#define GIMP_TYPE_LAYER_STACK (gimp_layer_stack_get_type ())
#define GIMP_LAYER_STACK(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_LAYER_STACK, GimpLayerStack))
#define GIMP_LAYER_STACK_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_LAYER_STACK, GimpLayerStackClass))
#define GIMP_IS_LAYER_STACK(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_LAYER_STACK))
#define GIMP_IS_LAYER_STACK_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_LAYER_STACK))
typedef struct _GimpLayerStackClass GimpLayerStackClass;
struct _GimpLayerStack
{
GimpDrawableStack parent_instance;
};
struct _GimpLayerStackClass
{
GimpDrawableStackClass parent_class;
};
GType gimp_layer_stack_get_type (void) G_GNUC_CONST;
GimpContainer * gimp_layer_stack_new (GType layer_type);
#endif /* __GIMP_LAYER_STACK_H__ */
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