forked from AuroraMiddleware/gtk
cf1526cca6
Most of the time, the GtkSnapshot objects we create while snapshotting widgets don't end up containing all that many nodes or states in their respective node or state stack. This undermines the amortized allocation behavior of the G(Ptr)Array we use for the stacks. So instead, use the (until now unused) parent_snapshot GtkSnapshot* passed to gtk_widget_create_render_node and reuse its node and state stack. We do not avoid allocating a new GtkSnapshot object, but we do avoid allocating a ton of G(Ptr)Array objects and we also avoid realloc'ing their storage.
109 lines
3.3 KiB
C
109 lines
3.3 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2016 Benjamin Otte <otte@gnome.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __GTK_SNAPSHOT_PRIVATE_H__
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#define __GTK_SNAPSHOT_PRIVATE_H__
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#include "gtksnapshot.h"
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G_BEGIN_DECLS
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typedef struct _GtkSnapshotState GtkSnapshotState;
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typedef GskRenderNode * (* GtkSnapshotCollectFunc) (GtkSnapshot *snapshot,
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GtkSnapshotState *state,
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GskRenderNode **nodes,
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guint n_nodes);
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struct _GtkSnapshotState {
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guint start_node_index;
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guint n_nodes;
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int translate_x;
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int translate_y;
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GtkSnapshotCollectFunc collect_func;
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union {
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struct {
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graphene_matrix_t transform;
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} transform;
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struct {
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double opacity;
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} opacity;
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struct {
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double radius;
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} blur;
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struct {
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graphene_matrix_t matrix;
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graphene_vec4_t offset;
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} color_matrix;
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struct {
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graphene_rect_t bounds;
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graphene_rect_t child_bounds;
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} repeat;
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struct {
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graphene_rect_t bounds;
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} clip;
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struct {
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GskRoundedRect bounds;
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} rounded_clip;
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struct {
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gsize n_shadows;
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GskShadow *shadows;
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GskShadow a_shadow; /* Used if n_shadows == 1 */
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} shadow;
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struct {
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GskBlendMode blend_mode;
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GskRenderNode *bottom_node;
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} blend;
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struct {
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double progress;
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GskRenderNode *start_node;
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} cross_fade;
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struct {
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char *message;
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} debug;
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} data;
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};
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/* This is a nasty little hack. We typedef GtkSnapshot to the fake object GdkSnapshot
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* so that we don't need to typecast between them.
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* After all, the GdkSnapshot only exist so poor language bindings don't trip. Hardcore
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* C code can just blatantly ignore such layering violations with a typedef.
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*/
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struct _GdkSnapshot {
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GObject parent_instance; /* it's really GdkSnapshot, but don't tell anyone! */
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GArray *state_stack;
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GPtrArray *nodes;
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guint from_parent : 1;
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};
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struct _GtkSnapshotClass {
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GObjectClass parent_class; /* it's really GdkSnapshotClass, but don't tell anyone! */
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};
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void gtk_snapshot_append_node_internal (GtkSnapshot *snapshot,
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GskRenderNode *node);
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GtkSnapshot * gtk_snapshot_new_with_parent (GtkSnapshot *parent_snapshot);
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G_END_DECLS
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#endif /* __GTK_SNAPSHOT_PRIVATE_H__ */
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