forked from AuroraMiddleware/gtk
47ea3a9452
1. Pass clip rectangles to gtk_snapshot_push_state() that point into the state array. 2. g_array_set_size(len+1) the state array 3. Make that function realloc() the state array. 4. The clip rectangle now points into invalid memory 5. Use the clip array This patch fixes things by moving step 5 to before step 2.
1919 lines
58 KiB
C
1919 lines
58 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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#include "config.h"
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#include "gtksnapshot.h"
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#include "gtksnapshotprivate.h"
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#include "gtkcssrgbavalueprivate.h"
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#include "gtkcssshadowsvalueprivate.h"
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#include "gtkrenderbackgroundprivate.h"
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#include "gtkrenderborderprivate.h"
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#include "gtkrendericonprivate.h"
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#include "gtkrendernodepaintableprivate.h"
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#include "gtkstylecontextprivate.h"
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#include "gsk/gskrendernodeprivate.h"
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#include "gtk/gskpango.h"
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/**
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* SECTION:gtksnapshot
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* @Short_description: Auxiliary object for snapshots
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* @Title: GtkSnapshot
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*
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* GtkSnapshot is an auxiliary object that assists in creating #GskRenderNodes
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* in the #GtkWidget::snapshot vfunc. It functions in a similar way to
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* a cairo context, and maintains a stack of render nodes and their associated
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* transformations.
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*
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* The node at the top of the stack is the the one that gtk_snapshot_append()
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* operates on. Use the gtk_snapshot_push() and gtk_snapshot_pop() functions to
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* change the current node.
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*
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* The typical way to obtain a #GtkSnapshot object is as an argument to
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* the #GtkWidget::snapshot vfunc. If you need to create your own GtkSnapshot,
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* use gtk_snapshot_new().
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*/
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G_DEFINE_TYPE (GtkSnapshot, gtk_snapshot, GDK_TYPE_SNAPSHOT)
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static void
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gtk_snapshot_dispose (GObject *object)
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{
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GtkSnapshot *snapshot = GTK_SNAPSHOT (object);
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if (snapshot->state_stack)
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gsk_render_node_unref (gtk_snapshot_to_node (snapshot));
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g_assert (snapshot->state_stack == NULL);
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g_assert (snapshot->nodes == NULL);
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G_OBJECT_CLASS (gtk_snapshot_parent_class)->dispose (object);
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}
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static void
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gtk_snapshot_class_init (GtkSnapshotClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->dispose = gtk_snapshot_dispose;
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}
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static void
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gtk_snapshot_init (GtkSnapshot *self)
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{
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}
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static GskRenderNode *
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gtk_snapshot_collect_default (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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const char *name)
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{
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GskRenderNode *node;
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if (n_nodes == 0)
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{
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node = NULL;
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}
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else if (n_nodes == 1)
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{
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node = gsk_render_node_ref (nodes[0]);
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}
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else
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{
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node = gsk_container_node_new (nodes, n_nodes);
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if (name)
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gsk_render_node_set_name (node, name);
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}
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return node;
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}
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static GtkSnapshotState *
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gtk_snapshot_push_state (GtkSnapshot *snapshot,
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char *name,
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const graphene_rect_t *clip,
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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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{
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GtkSnapshotState state = { 0, };
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state.name = name;
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if (clip)
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{
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state.clip = *clip;
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state.has_clip = TRUE;
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}
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state.translate_x = translate_x;
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state.translate_y = translate_y;
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state.collect_func = collect_func;
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state.start_node_index = snapshot->nodes->len;
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state.n_nodes = 0;
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g_array_append_val (snapshot->state_stack, state);
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return &g_array_index (snapshot->state_stack, GtkSnapshotState, snapshot->state_stack->len - 1);
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}
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static GtkSnapshotState *
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gtk_snapshot_get_current_state (const GtkSnapshot *snapshot)
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{
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g_assert (snapshot->state_stack->len > 0);
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return &g_array_index (snapshot->state_stack, GtkSnapshotState, snapshot->state_stack->len - 1);
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}
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static GtkSnapshotState *
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gtk_snapshot_get_previous_state (const GtkSnapshot *snapshot)
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{
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g_assert (snapshot->state_stack->len > 1);
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return &g_array_index (snapshot->state_stack, GtkSnapshotState, snapshot->state_stack->len - 2);
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}
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static void
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gtk_snapshot_state_clear (GtkSnapshotState *state)
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{
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g_clear_pointer (&state->name, g_free);
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}
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static GtkSnapshot *
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gtk_snapshot_new_internal (gboolean record_names,
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const graphene_rect_t *clip,
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char *name)
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{
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GtkSnapshot *snapshot;
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snapshot = g_object_new (GTK_TYPE_SNAPSHOT, NULL);
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snapshot->record_names = record_names;
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snapshot->state_stack = g_array_new (FALSE, TRUE, sizeof (GtkSnapshotState));
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g_array_set_clear_func (snapshot->state_stack, (GDestroyNotify)gtk_snapshot_state_clear);
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snapshot->nodes = g_ptr_array_new_with_free_func ((GDestroyNotify)gsk_render_node_unref);
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gtk_snapshot_push_state (snapshot,
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name,
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clip,
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0, 0,
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gtk_snapshot_collect_default);
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return snapshot;
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}
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/**
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* gtk_snapshot_new:
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* @record_names: whether to keep node names (for debugging purposes)
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* @name: a printf-style format string to create the node name
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* @...: arguments for @name
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*
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* Creates a new #GtkSnapshot.
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*
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* Returns: a newly-allocated #GtkSnapshot
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*/
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GtkSnapshot *
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gtk_snapshot_new (gboolean record_names,
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const char *name,
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...)
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{
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char *str;
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if (name && record_names)
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{
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va_list args;
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va_start (args, name);
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str = g_strdup_vprintf (name, args);
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va_end (args);
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}
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else
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str = NULL;
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return gtk_snapshot_new_internal (record_names,
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NULL,
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str);
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}
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GtkSnapshot *
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gtk_snapshot_new_child (GtkSnapshot *parent,
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const char *name,
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...)
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{
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GtkSnapshotState *parent_state;
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GtkSnapshot *snapshot;
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graphene_rect_t c, *clip;
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char *str;
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if (name && parent->record_names)
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{
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va_list args;
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va_start (args, name);
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str = g_strdup_vprintf (name, args);
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va_end (args);
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}
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else
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str = NULL;
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parent_state = gtk_snapshot_get_current_state (parent);
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if (parent_state->has_clip)
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{
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graphene_rect_offset_r (&parent_state->clip,
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- parent_state->translate_x,
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- parent_state->translate_y,
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&c);
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clip = &c;
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}
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else
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clip = NULL;
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snapshot = gtk_snapshot_new_internal (parent->record_names,
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clip,
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str);
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return snapshot;
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}
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/**
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* gtk_snapshot_free_to_node: (skip)
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* @snapshot: (transfer full): a #GtkSnapshot
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*
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* Returns the node that was constructed by @snapshot
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* and frees @snapshot.
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*
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* Returns: (transfer full): a newly-created #GskRenderNode
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*/
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GskRenderNode *
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gtk_snapshot_free_to_node (GtkSnapshot *snapshot)
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{
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GskRenderNode *result;
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result = gtk_snapshot_to_node (snapshot);
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g_object_unref (snapshot);
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return result;
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}
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/**
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* gtk_snapshot_free_to_paintable: (skip)
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* @snapshot: (transfer full): a #GtkSnapshot
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* @size: (allow-none): The size of the resulting paintable
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* or %NULL to use the bounds of the snapshot
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*
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* Returns a paintable for the node that was
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* constructed by @snapshot and frees @snapshot.
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*
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* Returns: (transfer full): a newly-created #GdkPaintable
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*/
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GdkPaintable *
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gtk_snapshot_free_to_paintable (GtkSnapshot *snapshot,
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const graphene_size_t *size)
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{
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GdkPaintable *result;
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result = gtk_snapshot_to_paintable (snapshot, size);
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g_object_unref (snapshot);
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return result;
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}
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/**
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* gtk_snapshot_push:
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* @snapshot: a #GtkSnapshot
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* @keep_coordinates: If %TRUE, the current offset and clip will be kept.
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* Otherwise, the clip will be unset and the offset will be reset to
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* (0, 0).
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* @name: (transfer none): a printf() style format string for the name for the new node
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* @...: arguments to insert into the format string
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*
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* Creates a new render node, appends it to the current render
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* node of @snapshot, and makes it the new current render node.
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*/
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void
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gtk_snapshot_push (GtkSnapshot *snapshot,
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gboolean keep_coordinates,
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const char *name,
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...)
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{
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char *str;
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if (name && snapshot->record_names)
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{
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va_list args;
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va_start (args, name);
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str = g_strdup_vprintf (name, args);
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va_end (args);
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}
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else
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str = NULL;
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if (keep_coordinates)
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{
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GtkSnapshotState *state = gtk_snapshot_get_current_state (snapshot);
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gtk_snapshot_push_state (snapshot,
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g_strdup (str),
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state->has_clip ? &state->clip : NULL,
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state->translate_x,
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state->translate_y,
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gtk_snapshot_collect_default);
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}
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else
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{
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gtk_snapshot_push_state (snapshot,
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g_strdup (str),
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NULL, 0, 0,
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gtk_snapshot_collect_default);
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}
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}
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static GskRenderNode *
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gtk_snapshot_collect_transform (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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const char *name)
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{
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GskRenderNode *node, *transform_node;
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node = gtk_snapshot_collect_default (snapshot, state, nodes, n_nodes, name);
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if (node == NULL)
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return NULL;
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transform_node = gsk_transform_node_new (node, &state->data.transform.transform);
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if (name)
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gsk_render_node_set_name (transform_node, name);
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gsk_render_node_unref (node);
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return transform_node;
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}
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void
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gtk_snapshot_push_transform (GtkSnapshot *snapshot,
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const graphene_matrix_t *transform,
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const char *name,
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...)
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{
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GtkSnapshotState *previous_state;
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GtkSnapshotState *state;
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graphene_matrix_t offset;
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char *str;
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if (name && snapshot->record_names)
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{
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va_list args;
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va_start (args, name);
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str = g_strdup_vprintf (name, args);
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va_end (args);
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}
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else
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str = NULL;
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state = gtk_snapshot_push_state (snapshot,
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str,
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NULL,
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0, 0,
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gtk_snapshot_collect_transform);
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previous_state = gtk_snapshot_get_previous_state (snapshot);
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graphene_matrix_init_translate (&offset,
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&GRAPHENE_POINT3D_INIT(
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previous_state->translate_x,
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previous_state->translate_y,
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0
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));
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graphene_matrix_multiply (transform, &offset, &state->data.transform.transform);
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}
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static GskRenderNode *
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gtk_snapshot_collect_offset (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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const char *name)
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{
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GskRenderNode *node, *offset_node;
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GtkSnapshotState *previous_state;
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node = gtk_snapshot_collect_default (snapshot, state, nodes, n_nodes, name);
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if (node == NULL)
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return NULL;
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previous_state = gtk_snapshot_get_previous_state (snapshot);
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if (previous_state->translate_x == 0.0 &&
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previous_state->translate_y == 0.0)
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return node;
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offset_node = gsk_offset_node_new (node,
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previous_state->translate_x,
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previous_state->translate_y);
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if (name)
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gsk_render_node_set_name (offset_node, name);
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gsk_render_node_unref (node);
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return offset_node;
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}
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static void
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gtk_snapshot_push_offset (GtkSnapshot *snapshot)
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{
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GtkSnapshotState *state = gtk_snapshot_get_current_state (snapshot);
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char *str;
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graphene_rect_t clip;
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if (snapshot->record_names)
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{
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str = g_strdup_printf ("Offset<%d,%d>", state->translate_x, state->translate_y);
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}
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else
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str = NULL;
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if (state->has_clip)
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graphene_rect_offset_r (&state->clip,
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- state->translate_x,
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- state->translate_y,
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&clip);
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state = gtk_snapshot_push_state (snapshot,
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str,
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state->has_clip ? &clip : NULL,
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0, 0,
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gtk_snapshot_collect_offset);
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}
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static GskRenderNode *
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gtk_snapshot_collect_opacity (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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const char *name)
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{
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GskRenderNode *node, *opacity_node;
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node = gtk_snapshot_collect_default (snapshot, state, nodes, n_nodes, name);
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if (node == NULL)
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return NULL;
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if (state->data.opacity.opacity == 1.0)
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{
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opacity_node = node;
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}
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else if (state->data.opacity.opacity == 0.0)
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{
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gsk_render_node_unref (node);
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opacity_node = NULL;
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}
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else
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{
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opacity_node = gsk_opacity_node_new (node, state->data.opacity.opacity);
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if (name)
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gsk_render_node_set_name (opacity_node, name);
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gsk_render_node_unref (node);
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}
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return opacity_node;
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}
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|
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void
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gtk_snapshot_push_opacity (GtkSnapshot *snapshot,
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double opacity,
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const char *name,
|
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...)
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{
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GtkSnapshotState *current_state = gtk_snapshot_get_current_state (snapshot);
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GtkSnapshotState *state;
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char *str;
|
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if (name && snapshot->record_names)
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{
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va_list args;
|
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va_start (args, name);
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str = g_strdup_vprintf (name, args);
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va_end (args);
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}
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else
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str = NULL;
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state = gtk_snapshot_push_state (snapshot,
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str,
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current_state->has_clip ? ¤t_state->clip : NULL,
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current_state->translate_x,
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current_state->translate_y,
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gtk_snapshot_collect_opacity);
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state->data.opacity.opacity = CLAMP (opacity, 0.0, 1.0);
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}
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static GskRenderNode *
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gtk_snapshot_collect_blur (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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const char *name)
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{
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GskRenderNode *node, *blur_node;
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double radius;
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node = gtk_snapshot_collect_default (snapshot, state, nodes, n_nodes, name);
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if (node == NULL)
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return NULL;
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radius = state->data.blur.radius;
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if (radius == 0.0)
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return node;
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blur_node = gsk_blur_node_new (node, radius);
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if (name)
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gsk_render_node_set_name (blur_node, name);
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gsk_render_node_unref (node);
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|
|
|
return blur_node;
|
|
}
|
|
|
|
void
|
|
gtk_snapshot_push_blur (GtkSnapshot *snapshot,
|
|
double radius,
|
|
const char *name,
|
|
...)
|
|
{
|
|
const GtkSnapshotState *current_state = gtk_snapshot_get_current_state (snapshot);
|
|
GtkSnapshotState *state;
|
|
char *str;
|
|
|
|
if (name && snapshot->record_names)
|
|
{
|
|
va_list args;
|
|
|
|
va_start (args, name);
|
|
str = g_strdup_vprintf (name, args);
|
|
va_end (args);
|
|
}
|
|
else
|
|
str = NULL;
|
|
|
|
state = gtk_snapshot_push_state (snapshot,
|
|
str,
|
|
current_state->has_clip ? ¤t_state->clip : NULL,
|
|
current_state->translate_x,
|
|
current_state->translate_y,
|
|
gtk_snapshot_collect_blur);
|
|
state->data.blur.radius = radius;
|
|
current_state = state;
|
|
}
|
|
|
|
static GskRenderNode *
|
|
gtk_snapshot_collect_color_matrix (GtkSnapshot *snapshot,
|
|
GtkSnapshotState *state,
|
|
GskRenderNode **nodes,
|
|
guint n_nodes,
|
|
const char *name)
|
|
{
|
|
GskRenderNode *node, *color_matrix_node;
|
|
|
|
node = gtk_snapshot_collect_default (snapshot, state, nodes, n_nodes, name);
|
|
if (node == NULL)
|
|
return NULL;
|
|
|
|
if (gsk_render_node_get_node_type (node) == GSK_COLOR_MATRIX_NODE)
|
|
{
|
|
GskRenderNode *child = gsk_render_node_ref (gsk_color_matrix_node_get_child (node));
|
|
const graphene_matrix_t *mat1 = gsk_color_matrix_node_peek_color_matrix (node);
|
|
graphene_matrix_t mat2;
|
|
graphene_vec4_t offset2;
|
|
|
|
/* color matrix node: color = mat * p + offset; for a pixel p.
|
|
* color = mat1 * (mat2 * p + offset2) + offset1;
|
|
* = mat1 * mat2 * p + offset2 * mat1 + offset1
|
|
* = (mat1 * mat2) * p + (offset2 * mat1 + offset1)
|
|
* Which this code does.
|
|
* mat1 and offset1 come from @child.
|
|
*/
|
|
|
|
mat2 = state->data.color_matrix.matrix;
|
|
offset2 = state->data.color_matrix.offset;
|
|
graphene_matrix_transform_vec4 (mat1, &offset2, &offset2);
|
|
graphene_vec4_add (&offset2, gsk_color_matrix_node_peek_color_offset (node), &offset2);
|
|
|
|
graphene_matrix_multiply (mat1, &mat2, &mat2);
|
|
|
|
gsk_render_node_unref (node);
|
|
node = NULL;
|
|
color_matrix_node = gsk_color_matrix_node_new (child, &mat2, &offset2);
|
|
|
|
gsk_render_node_unref (child);
|
|
}
|
|
else
|
|
{
|
|
color_matrix_node = gsk_color_matrix_node_new (node,
|
|
&state->data.color_matrix.matrix,
|
|
&state->data.color_matrix.offset);
|
|
gsk_render_node_unref (node);
|
|
}
|
|
|
|
if (name)
|
|
gsk_render_node_set_name (color_matrix_node, name);
|
|
|
|
return color_matrix_node;
|
|
}
|
|
|
|
void
|
|
gtk_snapshot_push_color_matrix (GtkSnapshot *snapshot,
|
|
const graphene_matrix_t *color_matrix,
|
|
const graphene_vec4_t *color_offset,
|
|
const char *name,
|
|
...)
|
|
{
|
|
const GtkSnapshotState *current_state = gtk_snapshot_get_current_state (snapshot);
|
|
GtkSnapshotState *state;
|
|
char *str;
|
|
|
|
if (name && snapshot->record_names)
|
|
{
|
|
va_list args;
|
|
|
|
va_start (args, name);
|
|
str = g_strdup_vprintf (name, args);
|
|
va_end (args);
|
|
}
|
|
else
|
|
str = NULL;
|
|
|
|
state = gtk_snapshot_push_state (snapshot,
|
|
str,
|
|
current_state->has_clip ? ¤t_state->clip : NULL,
|
|
current_state->translate_x,
|
|
current_state->translate_y,
|
|
gtk_snapshot_collect_color_matrix);
|
|
|
|
graphene_matrix_init_from_matrix (&state->data.color_matrix.matrix, color_matrix);
|
|
graphene_vec4_init_from_vec4 (&state->data.color_matrix.offset, color_offset);
|
|
current_state = state;
|
|
}
|
|
|
|
static void
|
|
rectangle_init_from_graphene (cairo_rectangle_int_t *cairo,
|
|
const graphene_rect_t *graphene)
|
|
{
|
|
cairo->x = floorf (graphene->origin.x);
|
|
cairo->y = floorf (graphene->origin.y);
|
|
cairo->width = ceilf (graphene->origin.x + graphene->size.width) - cairo->x;
|
|
cairo->height = ceilf (graphene->origin.y + graphene->size.height) - cairo->y;
|
|
}
|
|
|
|
static GskRenderNode *
|
|
gtk_snapshot_collect_repeat (GtkSnapshot *snapshot,
|
|
GtkSnapshotState *state,
|
|
GskRenderNode **nodes,
|
|
guint n_nodes,
|
|
const char *name)
|
|
{
|
|
GskRenderNode *node, *repeat_node;
|
|
graphene_rect_t *bounds = &state->data.repeat.bounds;
|
|
graphene_rect_t *child_bounds = &state->data.repeat.child_bounds;
|
|
|
|
node = gtk_snapshot_collect_default (snapshot, state, nodes, n_nodes, name);
|
|
if (node == NULL)
|
|
return NULL;
|
|
|
|
repeat_node = gsk_repeat_node_new (bounds,
|
|
node,
|
|
child_bounds->size.width > 0 ? child_bounds : NULL);
|
|
if (name)
|
|
gsk_render_node_set_name (repeat_node, name);
|
|
|
|
gsk_render_node_unref (node);
|
|
|
|
return repeat_node;
|
|
}
|
|
|
|
void
|
|
gtk_snapshot_push_repeat (GtkSnapshot *snapshot,
|
|
const graphene_rect_t *bounds,
|
|
const graphene_rect_t *child_bounds,
|
|
const char *name,
|
|
...)
|
|
{
|
|
const GtkSnapshotState *current_state = gtk_snapshot_get_current_state (snapshot);
|
|
GtkSnapshotState *state;
|
|
graphene_rect_t real_child_bounds = { { 0 } };
|
|
char *str;
|
|
|
|
if (name && snapshot->record_names)
|
|
{
|
|
va_list args;
|
|
|
|
va_start (args, name);
|
|
str = g_strdup_vprintf (name, args);
|
|
va_end (args);
|
|
}
|
|
else
|
|
str = NULL;
|
|
|
|
if (child_bounds)
|
|
graphene_rect_offset_r (child_bounds, current_state->translate_x, current_state->translate_y, &real_child_bounds);
|
|
|
|
state = gtk_snapshot_push_state (snapshot,
|
|
str,
|
|
&real_child_bounds,
|
|
current_state->translate_x,
|
|
current_state->translate_y,
|
|
gtk_snapshot_collect_repeat);
|
|
|
|
current_state = gtk_snapshot_get_previous_state (snapshot);
|
|
|
|
graphene_rect_offset_r (bounds, current_state->translate_x, current_state->translate_y, &state->data.repeat.bounds);
|
|
state->data.repeat.child_bounds = real_child_bounds;
|
|
|
|
current_state = state;
|
|
}
|
|
|
|
static GskRenderNode *
|
|
gtk_snapshot_collect_clip (GtkSnapshot *snapshot,
|
|
GtkSnapshotState *state,
|
|
GskRenderNode **nodes,
|
|
guint n_nodes,
|
|
const char *name)
|
|
{
|
|
GskRenderNode *node, *clip_node;
|
|
|
|
node = gtk_snapshot_collect_default (snapshot, state, nodes, n_nodes, name);
|
|
if (node == NULL)
|
|
return NULL;
|
|
|
|
/* Check if the child node will even be clipped */
|
|
if (graphene_rect_contains_rect (&state->data.clip.bounds, &node->bounds))
|
|
return node;
|
|
|
|
if (state->data.clip.bounds.size.width == 0 ||
|
|
state->data.clip.bounds.size.height == 0)
|
|
return NULL;
|
|
|
|
clip_node = gsk_clip_node_new (node, &state->data.clip.bounds);
|
|
if (name)
|
|
gsk_render_node_set_name (clip_node, name);
|
|
|
|
gsk_render_node_unref (node);
|
|
|
|
return clip_node;
|
|
}
|
|
|
|
void
|
|
gtk_snapshot_push_clip (GtkSnapshot *snapshot,
|
|
const graphene_rect_t *bounds,
|
|
const char *name,
|
|
...)
|
|
{
|
|
const GtkSnapshotState *current_state = gtk_snapshot_get_current_state (snapshot);
|
|
GtkSnapshotState *state;
|
|
graphene_rect_t clip, real_bounds;
|
|
cairo_rectangle_int_t rect;
|
|
char *str;
|
|
|
|
graphene_rect_offset_r (bounds, current_state->translate_x, current_state->translate_y, &real_bounds);
|
|
|
|
if (name && snapshot->record_names)
|
|
{
|
|
va_list args;
|
|
|
|
va_start (args, name);
|
|
str = g_strdup_vprintf (name, args);
|
|
va_end (args);
|
|
}
|
|
else
|
|
str = NULL;
|
|
|
|
rectangle_init_from_graphene (&rect, &real_bounds);
|
|
if (current_state->has_clip)
|
|
graphene_rect_intersection (¤t_state->clip, &real_bounds, &clip);
|
|
else
|
|
clip = real_bounds;
|
|
|
|
state = gtk_snapshot_push_state (snapshot,
|
|
str,
|
|
&clip,
|
|
current_state->translate_x,
|
|
current_state->translate_y,
|
|
gtk_snapshot_collect_clip);
|
|
|
|
state->data.clip.bounds = real_bounds;
|
|
}
|
|
|
|
static GskRenderNode *
|
|
gtk_snapshot_collect_rounded_clip (GtkSnapshot *snapshot,
|
|
GtkSnapshotState *state,
|
|
GskRenderNode **nodes,
|
|
guint n_nodes,
|
|
const char *name)
|
|
{
|
|
GskRenderNode *node, *clip_node;
|
|
|
|
node = gtk_snapshot_collect_default (snapshot, state, nodes, n_nodes, name);
|
|
if (node == NULL)
|
|
return NULL;
|
|
|
|
/* If the given radius is 0 in all corners, we can just create a normal clip node */
|
|
if (gsk_rounded_rect_is_rectilinear (&state->data.rounded_clip.bounds))
|
|
{
|
|
/* ... and do the same optimization */
|
|
if (graphene_rect_contains_rect (&state->data.rounded_clip.bounds.bounds, &node->bounds))
|
|
return node;
|
|
|
|
clip_node = gsk_clip_node_new (node, &state->data.rounded_clip.bounds.bounds);
|
|
}
|
|
else
|
|
{
|
|
if (gsk_rounded_rect_contains_rect (&state->data.rounded_clip.bounds, &node->bounds))
|
|
return node;
|
|
|
|
clip_node = gsk_rounded_clip_node_new (node, &state->data.rounded_clip.bounds);
|
|
}
|
|
|
|
if (clip_node->bounds.size.width == 0 ||
|
|
clip_node->bounds.size.height == 0)
|
|
{
|
|
gsk_render_node_unref (node);
|
|
gsk_render_node_unref (clip_node);
|
|
return NULL;
|
|
}
|
|
|
|
if (name)
|
|
gsk_render_node_set_name (clip_node, name);
|
|
|
|
gsk_render_node_unref (node);
|
|
|
|
return clip_node;
|
|
}
|
|
|
|
void
|
|
gtk_snapshot_push_rounded_clip (GtkSnapshot *snapshot,
|
|
const GskRoundedRect *bounds,
|
|
const char *name,
|
|
...)
|
|
{
|
|
const GtkSnapshotState *current_state = gtk_snapshot_get_current_state (snapshot);
|
|
GtkSnapshotState *state;
|
|
GskRoundedRect real_bounds;
|
|
graphene_rect_t clip;
|
|
char *str;
|
|
|
|
gsk_rounded_rect_init_copy (&real_bounds, bounds);
|
|
gsk_rounded_rect_offset (&real_bounds, current_state->translate_x, current_state->translate_y);
|
|
|
|
if (name && snapshot->record_names)
|
|
{
|
|
va_list args;
|
|
|
|
va_start (args, name);
|
|
str = g_strdup_vprintf (name, args);
|
|
va_end (args);
|
|
}
|
|
else
|
|
str = NULL;
|
|
|
|
if (current_state->has_clip)
|
|
graphene_rect_intersection (¤t_state->clip, &real_bounds.bounds, &clip);
|
|
else
|
|
clip = real_bounds.bounds;
|
|
|
|
state = gtk_snapshot_push_state (snapshot,
|
|
str,
|
|
&clip,
|
|
current_state->translate_x,
|
|
current_state->translate_y,
|
|
gtk_snapshot_collect_rounded_clip);
|
|
|
|
|
|
state->data.rounded_clip.bounds = real_bounds;
|
|
}
|
|
|
|
static GskRenderNode *
|
|
gtk_snapshot_collect_shadow (GtkSnapshot *snapshot,
|
|
GtkSnapshotState *state,
|
|
GskRenderNode **nodes,
|
|
guint n_nodes,
|
|
const char *name)
|
|
{
|
|
GskRenderNode *node, *shadow_node;
|
|
|
|
node = gtk_snapshot_collect_default (snapshot, state, nodes, n_nodes, name);
|
|
if (node == NULL)
|
|
return NULL;
|
|
|
|
shadow_node = gsk_shadow_node_new (node,
|
|
state->data.shadow.shadows != NULL ?
|
|
state->data.shadow.shadows :
|
|
&state->data.shadow.a_shadow,
|
|
state->data.shadow.n_shadows);
|
|
if (name)
|
|
gsk_render_node_set_name (shadow_node, name);
|
|
|
|
gsk_render_node_unref (node);
|
|
g_free (state->data.shadow.shadows);
|
|
|
|
return shadow_node;
|
|
}
|
|
|
|
void
|
|
gtk_snapshot_push_shadow (GtkSnapshot *snapshot,
|
|
const GskShadow *shadow,
|
|
gsize n_shadows,
|
|
const char *name,
|
|
...)
|
|
{
|
|
const GtkSnapshotState *current_state = gtk_snapshot_get_current_state (snapshot);
|
|
GtkSnapshotState *state;
|
|
char *str;
|
|
|
|
if (name && snapshot->record_names)
|
|
{
|
|
va_list args;
|
|
|
|
va_start (args, name);
|
|
str = g_strdup_vprintf (name, args);
|
|
va_end (args);
|
|
}
|
|
else
|
|
str = NULL;
|
|
|
|
state = gtk_snapshot_push_state (snapshot,
|
|
str,
|
|
current_state->has_clip ? ¤t_state->clip : NULL,
|
|
current_state->translate_x,
|
|
current_state->translate_y,
|
|
gtk_snapshot_collect_shadow);
|
|
|
|
state->data.shadow.n_shadows = n_shadows;
|
|
if (n_shadows == 1)
|
|
{
|
|
state->data.shadow.shadows = NULL;
|
|
memcpy (&state->data.shadow.a_shadow, shadow, sizeof (GskShadow));
|
|
}
|
|
else
|
|
{
|
|
state->data.shadow.shadows = g_malloc (sizeof (GskShadow) * n_shadows);
|
|
memcpy (state->data.shadow.shadows, shadow, sizeof (GskShadow) * n_shadows);
|
|
}
|
|
|
|
}
|
|
|
|
static GskRenderNode *
|
|
gtk_snapshot_collect_blend_top (GtkSnapshot *snapshot,
|
|
GtkSnapshotState *state,
|
|
GskRenderNode **nodes,
|
|
guint n_nodes,
|
|
const char *name)
|
|
{
|
|
GskRenderNode *bottom_node, *top_node, *blend_node;
|
|
GdkRGBA transparent = { 0, 0, 0, 0 };
|
|
|
|
top_node = gtk_snapshot_collect_default (snapshot, state, nodes, n_nodes, name);
|
|
bottom_node = state->data.blend.bottom_node;
|
|
|
|
g_assert (top_node != NULL || bottom_node != NULL);
|
|
|
|
/* XXX: Is this necessary? Do we need a NULL node? */
|
|
if (top_node == NULL)
|
|
top_node = gsk_color_node_new (&transparent, &bottom_node->bounds);
|
|
if (bottom_node == NULL)
|
|
bottom_node = gsk_color_node_new (&transparent, &top_node->bounds);
|
|
|
|
blend_node = gsk_blend_node_new (bottom_node, top_node, state->data.blend.blend_mode);
|
|
gsk_render_node_set_name (blend_node, name);
|
|
|
|
gsk_render_node_unref (top_node);
|
|
gsk_render_node_unref (bottom_node);
|
|
|
|
return blend_node;
|
|
}
|
|
|
|
static GskRenderNode *
|
|
gtk_snapshot_collect_blend_bottom (GtkSnapshot *snapshot,
|
|
GtkSnapshotState *state,
|
|
GskRenderNode **nodes,
|
|
guint n_nodes,
|
|
const char *name)
|
|
{
|
|
GtkSnapshotState *prev_state = gtk_snapshot_get_previous_state (snapshot);
|
|
|
|
g_assert (prev_state->collect_func == gtk_snapshot_collect_blend_top);
|
|
|
|
prev_state->data.blend.bottom_node = gtk_snapshot_collect_default (snapshot, state, nodes, n_nodes, name);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* gtk_snapshot_push_blend:
|
|
* @snapshot: a #GtkSnapshot
|
|
* @blend_mode: blend mode to use
|
|
* @name: printf format string for name of the pushed node
|
|
* @...: printf-style arguments for the @name string
|
|
*
|
|
* Blends together 2 images with the given blend mode.
|
|
*
|
|
* Until the first call to gtk_snapshot_pop(), the bottom image for the
|
|
* blend operation will be recorded. After that call, the top image to
|
|
* be blended will be recorded until the second call to gtk_snapshot_pop().
|
|
*
|
|
* Calling this function requires 2 subsequent calls to gtk_snapshot_pop().
|
|
**/
|
|
void
|
|
gtk_snapshot_push_blend (GtkSnapshot *snapshot,
|
|
GskBlendMode blend_mode,
|
|
const char *name,
|
|
...)
|
|
{
|
|
GtkSnapshotState *current_state = gtk_snapshot_get_current_state (snapshot);
|
|
GtkSnapshotState *top_state;
|
|
char *str;
|
|
|
|
if (name && snapshot->record_names)
|
|
{
|
|
va_list args;
|
|
|
|
va_start (args, name);
|
|
str = g_strdup_vprintf (name, args);
|
|
va_end (args);
|
|
}
|
|
else
|
|
str = NULL;
|
|
|
|
top_state = gtk_snapshot_push_state (snapshot,
|
|
str,
|
|
current_state->has_clip ? ¤t_state->clip : NULL,
|
|
current_state->translate_x,
|
|
current_state->translate_y,
|
|
gtk_snapshot_collect_blend_top);
|
|
top_state->data.blend.blend_mode = blend_mode;
|
|
|
|
gtk_snapshot_push_state (snapshot,
|
|
g_strdup (str),
|
|
top_state->has_clip ? &top_state->clip : NULL,
|
|
top_state->translate_x,
|
|
top_state->translate_y,
|
|
gtk_snapshot_collect_blend_bottom);
|
|
}
|
|
|
|
static GskRenderNode *
|
|
gtk_snapshot_collect_cross_fade_end (GtkSnapshot *snapshot,
|
|
GtkSnapshotState *state,
|
|
GskRenderNode **nodes,
|
|
guint n_nodes,
|
|
const char *name)
|
|
{
|
|
GskRenderNode *start_node, *end_node, *node;
|
|
|
|
end_node = gtk_snapshot_collect_default (snapshot, state, nodes, n_nodes, name);
|
|
start_node = state->data.cross_fade.start_node;
|
|
|
|
if (state->data.cross_fade.progress <= 0.0)
|
|
{
|
|
node = start_node;
|
|
|
|
if (end_node)
|
|
gsk_render_node_unref (end_node);
|
|
}
|
|
else if (state->data.cross_fade.progress >= 1.0)
|
|
{
|
|
node = end_node;
|
|
|
|
if (start_node)
|
|
gsk_render_node_unref (start_node);
|
|
}
|
|
else if (start_node && end_node)
|
|
{
|
|
node = gsk_cross_fade_node_new (start_node, end_node, state->data.cross_fade.progress);
|
|
gsk_render_node_set_name (node, name);
|
|
|
|
gsk_render_node_unref (start_node);
|
|
gsk_render_node_unref (end_node);
|
|
}
|
|
else if (start_node)
|
|
{
|
|
node = gsk_opacity_node_new (start_node, 1.0 - state->data.cross_fade.progress);
|
|
gsk_render_node_set_name (node, name);
|
|
|
|
gsk_render_node_unref (start_node);
|
|
}
|
|
else if (end_node)
|
|
{
|
|
node = gsk_opacity_node_new (end_node, state->data.cross_fade.progress);
|
|
gsk_render_node_set_name (node, name);
|
|
|
|
gsk_render_node_unref (end_node);
|
|
}
|
|
else
|
|
{
|
|
node = NULL;
|
|
}
|
|
|
|
return node;
|
|
}
|
|
|
|
static GskRenderNode *
|
|
gtk_snapshot_collect_cross_fade_start (GtkSnapshot *snapshot,
|
|
GtkSnapshotState *state,
|
|
GskRenderNode **nodes,
|
|
guint n_nodes,
|
|
const char *name)
|
|
{
|
|
GtkSnapshotState *prev_state = gtk_snapshot_get_previous_state (snapshot);
|
|
|
|
g_assert (prev_state->collect_func == gtk_snapshot_collect_cross_fade_end);
|
|
|
|
prev_state->data.cross_fade.start_node = gtk_snapshot_collect_default (snapshot, state, nodes, n_nodes, name);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* gtk_snapshot_push_cross_fade:
|
|
* @snapshot: a #GtkSnapshot
|
|
* @progress: progress between 0.0 and 1.0
|
|
* @name: printf format string for name of the pushed node
|
|
* @...: printf-style arguments for the @name string
|
|
*
|
|
* Snapshots a cross-fade operation between two images with the
|
|
* given @progress.
|
|
*
|
|
* Until the first call to gtk_snapshot_pop(), the start image
|
|
* will be snapshot. After that call, the end image will be recorded
|
|
* until the second call to gtk_snapshot_pop().
|
|
*
|
|
* Calling this function requires 2 calls to gtk_snapshot_pop().
|
|
**/
|
|
void
|
|
gtk_snapshot_push_cross_fade (GtkSnapshot *snapshot,
|
|
double progress,
|
|
const char *name,
|
|
...)
|
|
{
|
|
const GtkSnapshotState *current_state = gtk_snapshot_get_current_state (snapshot);
|
|
GtkSnapshotState *end_state;
|
|
char *str;
|
|
|
|
if (name && snapshot->record_names)
|
|
{
|
|
va_list args;
|
|
|
|
va_start (args, name);
|
|
str = g_strdup_vprintf (name, args);
|
|
va_end (args);
|
|
}
|
|
else
|
|
str = NULL;
|
|
|
|
end_state = gtk_snapshot_push_state (snapshot,
|
|
str,
|
|
current_state->has_clip ? ¤t_state->clip : NULL,
|
|
current_state->translate_x,
|
|
current_state->translate_y,
|
|
gtk_snapshot_collect_cross_fade_end);
|
|
end_state->data.cross_fade.progress = progress;
|
|
|
|
gtk_snapshot_push_state (snapshot,
|
|
g_strdup (str),
|
|
end_state->has_clip ? &end_state->clip : NULL,
|
|
end_state->translate_x,
|
|
end_state->translate_y,
|
|
gtk_snapshot_collect_cross_fade_start);
|
|
}
|
|
|
|
static GskRenderNode *
|
|
gtk_snapshot_pop_internal (GtkSnapshot *snapshot)
|
|
{
|
|
GtkSnapshotState *state;
|
|
guint state_index;
|
|
GskRenderNode *node;
|
|
|
|
if (snapshot->state_stack->len == 0)
|
|
{
|
|
g_warning ("Too many gtk_snapshot_pop() calls.");
|
|
return NULL;
|
|
}
|
|
|
|
state = gtk_snapshot_get_current_state (snapshot);
|
|
state_index = snapshot->state_stack->len - 1;
|
|
|
|
node = state->collect_func (snapshot,
|
|
state,
|
|
(GskRenderNode **) snapshot->nodes->pdata + state->start_node_index,
|
|
state->n_nodes,
|
|
state->name);
|
|
|
|
/* The collect func may not modify the state stack... */
|
|
g_assert (state_index == snapshot->state_stack->len - 1);
|
|
|
|
/* Remove all the state's nodes from the list of nodes */
|
|
g_assert (state->start_node_index + state->n_nodes == snapshot->nodes->len);
|
|
g_ptr_array_remove_range (snapshot->nodes,
|
|
snapshot->nodes->len - state->n_nodes,
|
|
state->n_nodes);
|
|
|
|
g_array_remove_index (snapshot->state_stack, state_index);
|
|
|
|
return node;
|
|
}
|
|
|
|
/**
|
|
* gtk_snapshot_to_node:
|
|
* @snapshot: a #GtkSnapshot
|
|
*
|
|
* Returns the render node that was constructed
|
|
* by @snapshot. After calling this function, it
|
|
* is no longer possible to add more nodes to
|
|
* @snapshot. The only function that should be
|
|
* called after this is gtk_snapshot_unref().
|
|
*
|
|
* Returns: the constructed #GskRenderNode
|
|
*/
|
|
GskRenderNode *
|
|
gtk_snapshot_to_node (GtkSnapshot *snapshot)
|
|
{
|
|
GskRenderNode *result;
|
|
|
|
/* We should have exactly our initial state */
|
|
if (snapshot->state_stack->len > 1)
|
|
{
|
|
gint i;
|
|
|
|
g_warning ("Too many gtk_snapshot_push() calls. Still there:");
|
|
for (i = snapshot->state_stack->len - 1; i >= 0; i --)
|
|
{
|
|
const GtkSnapshotState *s = &g_array_index (snapshot->state_stack, GtkSnapshotState, i);
|
|
|
|
g_warning ("%s", s->name);
|
|
}
|
|
}
|
|
|
|
result = gtk_snapshot_pop_internal (snapshot);
|
|
|
|
g_array_free (snapshot->state_stack, TRUE);
|
|
snapshot->state_stack = NULL;
|
|
|
|
g_ptr_array_free (snapshot->nodes, TRUE);
|
|
snapshot->nodes = NULL;
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* gtk_snapshot_to_paintable:
|
|
* @snapshot: a #GtkSnapshot
|
|
* @size: (allow-none): The size of the resulting paintable
|
|
* or %NULL to use the bounds of the snapshot
|
|
*
|
|
* Returns a paintable encapsulating the render node
|
|
* that was constructed by @snapshot. After calling
|
|
* this function, it is no longer possible to add more
|
|
* nodes to @snapshot. The only function that should be
|
|
* called after this is gtk_snapshot_unref().
|
|
*
|
|
* Returns: (transfer full): a new #GdkPaintable
|
|
*/
|
|
GdkPaintable *
|
|
gtk_snapshot_to_paintable (GtkSnapshot *snapshot,
|
|
const graphene_size_t *size)
|
|
{
|
|
GskRenderNode *node;
|
|
GdkPaintable *paintable;
|
|
graphene_rect_t bounds;
|
|
|
|
node = gtk_snapshot_to_node (snapshot);
|
|
gsk_render_node_get_bounds (node, &bounds);
|
|
bounds.origin.x = 0;
|
|
bounds.origin.y = 0;
|
|
paintable = gtk_render_node_paintable_new (node, &bounds);
|
|
gsk_render_node_unref (node);
|
|
|
|
return paintable;
|
|
}
|
|
|
|
/**
|
|
* gtk_snapshot_pop:
|
|
* @snapshot: a #GtkSnapshot
|
|
*
|
|
* Removes the top element from the stack of render nodes,
|
|
* and appends it to the node underneath it.
|
|
*/
|
|
void
|
|
gtk_snapshot_pop (GtkSnapshot *snapshot)
|
|
{
|
|
GskRenderNode *node;
|
|
|
|
node = gtk_snapshot_pop_internal (snapshot);
|
|
if (node)
|
|
{
|
|
gtk_snapshot_append_node_internal (snapshot, node);
|
|
gsk_render_node_unref (node);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_snapshot_get_record_names:
|
|
* @snapshot: a #GtkSnapshot
|
|
*
|
|
* Obtains whether the snapshot is recording names
|
|
* for debugging.
|
|
*
|
|
* Returns: whether the snapshot records names
|
|
*/
|
|
gboolean
|
|
gtk_snapshot_get_record_names (GtkSnapshot *snapshot)
|
|
{
|
|
return snapshot->record_names;
|
|
}
|
|
|
|
/**
|
|
* gtk_snapshot_offset:
|
|
* @snapshot: a $GtkSnapshot
|
|
* @x: horizontal translation
|
|
* @y: vertical translation
|
|
*
|
|
* Appends a translation by (@x, @y) to the current transformation.
|
|
*/
|
|
void
|
|
gtk_snapshot_offset (GtkSnapshot *snapshot,
|
|
int x,
|
|
int y)
|
|
{
|
|
GtkSnapshotState *current_state = gtk_snapshot_get_current_state (snapshot);
|
|
|
|
current_state->translate_x += x;
|
|
current_state->translate_y += y;
|
|
}
|
|
|
|
/**
|
|
* gtk_snapshot_get_offset:
|
|
* @snapshot: a #GtkSnapshot
|
|
* @x: (out) (optional): return location for x offset
|
|
* @y: (out) (optional): return location for y offset
|
|
*
|
|
* Queries the offset managed by @snapshot. This offset is the
|
|
* accumulated sum of calls to gtk_snapshot_offset().
|
|
*
|
|
* Use this offset to determine how to offset nodes that you
|
|
* manually add to the snapshot using
|
|
* gtk_snapshot_append().
|
|
*
|
|
* Note that other functions that add nodes for you, such as
|
|
* gtk_snapshot_append_cairo() will add this offset for
|
|
* you.
|
|
**/
|
|
void
|
|
gtk_snapshot_get_offset (GtkSnapshot *snapshot,
|
|
int *x,
|
|
int *y)
|
|
{
|
|
const GtkSnapshotState *current_state = gtk_snapshot_get_current_state (snapshot);
|
|
|
|
if (x)
|
|
*x = current_state->translate_x;
|
|
|
|
if (y)
|
|
*y = current_state->translate_y;
|
|
}
|
|
|
|
void
|
|
gtk_snapshot_append_node_internal (GtkSnapshot *snapshot,
|
|
GskRenderNode *node)
|
|
{
|
|
GtkSnapshotState *current_state;
|
|
|
|
current_state = gtk_snapshot_get_current_state (snapshot);
|
|
|
|
if (current_state)
|
|
{
|
|
g_ptr_array_add (snapshot->nodes, gsk_render_node_ref (node));
|
|
current_state->n_nodes ++;
|
|
}
|
|
else
|
|
{
|
|
g_critical ("Tried appending a node to an already finished snapshot.");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_snapshot_append_node:
|
|
* @snapshot: a #GtkSnapshot
|
|
* @node: a #GskRenderNode
|
|
*
|
|
* Appends @node to the current render node of @snapshot,
|
|
* without changing the current node. If @snapshot does
|
|
* not have a current node yet, @node will become the
|
|
* initial node.
|
|
*/
|
|
void
|
|
gtk_snapshot_append_node (GtkSnapshot *snapshot,
|
|
GskRenderNode *node)
|
|
{
|
|
g_return_if_fail (snapshot != NULL);
|
|
g_return_if_fail (GSK_IS_RENDER_NODE (node));
|
|
|
|
gtk_snapshot_push_offset (snapshot);
|
|
gtk_snapshot_append_node_internal (snapshot, node);
|
|
gtk_snapshot_pop (snapshot);
|
|
}
|
|
|
|
/**
|
|
* gtk_snapshot_append_cairo:
|
|
* @snapshot: a #GtkSnapshot
|
|
* @bounds: the bounds for the new node
|
|
* @name: (transfer none): a printf() style format string for the name for the new node
|
|
* @...: arguments to insert into the format string
|
|
*
|
|
* Creates a new render node and appends it to the current render
|
|
* node of @snapshot, without changing the current node.
|
|
*
|
|
* Returns: a cairo_t suitable for drawing the contents of the newly
|
|
* created render node
|
|
*/
|
|
cairo_t *
|
|
gtk_snapshot_append_cairo (GtkSnapshot *snapshot,
|
|
const graphene_rect_t *bounds,
|
|
const char *name,
|
|
...)
|
|
{
|
|
const GtkSnapshotState *current_state = gtk_snapshot_get_current_state (snapshot);
|
|
GskRenderNode *node;
|
|
graphene_rect_t real_bounds;
|
|
cairo_t *cr;
|
|
|
|
g_return_val_if_fail (snapshot != NULL, NULL);
|
|
g_return_val_if_fail (bounds != NULL, NULL);
|
|
|
|
graphene_rect_offset_r (bounds, current_state->translate_x, current_state->translate_y, &real_bounds);
|
|
|
|
if (current_state->has_clip)
|
|
graphene_rect_intersection (¤t_state->clip, &real_bounds, &real_bounds);
|
|
|
|
node = gsk_cairo_node_new (&real_bounds);
|
|
|
|
if (name && snapshot->record_names)
|
|
{
|
|
va_list args;
|
|
char *str;
|
|
|
|
va_start (args, name);
|
|
str = g_strdup_vprintf (name, args);
|
|
va_end (args);
|
|
|
|
gsk_render_node_set_name (node, str);
|
|
|
|
g_free (str);
|
|
}
|
|
|
|
gtk_snapshot_append_node_internal (snapshot, node);
|
|
gsk_render_node_unref (node);
|
|
|
|
cr = gsk_cairo_node_get_draw_context (node);
|
|
|
|
cairo_translate (cr, current_state->translate_x, current_state->translate_y);
|
|
|
|
return cr;
|
|
}
|
|
|
|
/**
|
|
* gtk_snapshot_append_texture:
|
|
* @snapshot: a #GtkSnapshot
|
|
* @texture: the #GdkTexture to render
|
|
* @bounds: the bounds for the new node
|
|
* @name: (transfer none): a printf() style format string for the name for the new node
|
|
* @...: arguments to insert into the format string
|
|
*
|
|
* Creates a new render node drawing the @texture into the given @bounds and appends it
|
|
* to the current render node of @snapshot.
|
|
**/
|
|
void
|
|
gtk_snapshot_append_texture (GtkSnapshot *snapshot,
|
|
GdkTexture *texture,
|
|
const graphene_rect_t *bounds,
|
|
const char *name,
|
|
...)
|
|
{
|
|
GtkSnapshotState *current_state = gtk_snapshot_get_current_state (snapshot);
|
|
GskRenderNode *node;
|
|
graphene_rect_t real_bounds;
|
|
|
|
g_return_if_fail (snapshot != NULL);
|
|
g_return_if_fail (GDK_IS_TEXTURE (texture));
|
|
g_return_if_fail (bounds != NULL);
|
|
|
|
graphene_rect_offset_r (bounds, current_state->translate_x, current_state->translate_y, &real_bounds);
|
|
node = gsk_texture_node_new (texture, &real_bounds);
|
|
|
|
if (name && snapshot->record_names)
|
|
{
|
|
va_list args;
|
|
char *str;
|
|
|
|
va_start (args, name);
|
|
str = g_strdup_vprintf (name, args);
|
|
va_end (args);
|
|
|
|
gsk_render_node_set_name (node, str);
|
|
|
|
g_free (str);
|
|
}
|
|
|
|
gtk_snapshot_append_node_internal (snapshot, node);
|
|
gsk_render_node_unref (node);
|
|
}
|
|
|
|
/**
|
|
* gtk_snapshot_append_color:
|
|
* @snapshot: a #GtkSnapshot
|
|
* @color: the #GdkRGBA to draw
|
|
* @bounds: the bounds for the new node
|
|
* @name: (transfer none): a printf() style format string for the name for the new node
|
|
* @...: arguments to insert into the format string
|
|
*
|
|
* Creates a new render node drawing the @color into the given @bounds and appends it
|
|
* to the current render node of @snapshot.
|
|
*
|
|
* You should try to avoid calling this function if @color is transparent.
|
|
**/
|
|
void
|
|
gtk_snapshot_append_color (GtkSnapshot *snapshot,
|
|
const GdkRGBA *color,
|
|
const graphene_rect_t *bounds,
|
|
const char *name,
|
|
...)
|
|
{
|
|
const GtkSnapshotState *current_state = gtk_snapshot_get_current_state (snapshot);
|
|
GskRenderNode *node;
|
|
graphene_rect_t real_bounds;
|
|
|
|
g_return_if_fail (snapshot != NULL);
|
|
g_return_if_fail (color != NULL);
|
|
g_return_if_fail (bounds != NULL);
|
|
|
|
|
|
graphene_rect_offset_r (bounds, current_state->translate_x, current_state->translate_y, &real_bounds);
|
|
|
|
/* Color nodes are trivially "clippable" so we do it now */
|
|
if (current_state->has_clip)
|
|
graphene_rect_intersection (¤t_state->clip, &real_bounds, &real_bounds);
|
|
|
|
node = gsk_color_node_new (color, &real_bounds);
|
|
|
|
if (name && snapshot->record_names)
|
|
{
|
|
va_list args;
|
|
char *str;
|
|
|
|
va_start (args, name);
|
|
str = g_strdup_vprintf (name, args);
|
|
va_end (args);
|
|
|
|
gsk_render_node_set_name (node, str);
|
|
|
|
g_free (str);
|
|
}
|
|
|
|
gtk_snapshot_append_node_internal (snapshot, node);
|
|
gsk_render_node_unref (node);
|
|
}
|
|
|
|
gboolean
|
|
gtk_snapshot_get_clip (GtkSnapshot *snapshot,
|
|
graphene_rect_t *out_clip)
|
|
{
|
|
const GtkSnapshotState *current_state = gtk_snapshot_get_current_state (snapshot);
|
|
|
|
if (!current_state->has_clip)
|
|
return FALSE;
|
|
|
|
graphene_rect_offset_r (¤t_state->clip,
|
|
- current_state->translate_x,
|
|
- current_state->translate_y,
|
|
out_clip);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* gtk_snapshot_clips_rect:
|
|
* @snapshot: a #GtkSnapshot
|
|
* @bounds: a rectangle
|
|
*
|
|
* Tests whether the rectangle is entirely outside the clip region of @snapshot.
|
|
*
|
|
* Returns: %TRUE if @bounds is entirely outside the clip region
|
|
*/
|
|
gboolean
|
|
gtk_snapshot_clips_rect (GtkSnapshot *snapshot,
|
|
const graphene_rect_t *bounds)
|
|
{
|
|
const GtkSnapshotState *current_state = gtk_snapshot_get_current_state (snapshot);
|
|
graphene_rect_t offset_rect;
|
|
|
|
if (!current_state->has_clip)
|
|
return FALSE;
|
|
|
|
graphene_rect_offset_r (bounds,
|
|
current_state->translate_x,
|
|
current_state->translate_y,
|
|
&offset_rect);
|
|
|
|
return !graphene_rect_intersection (&offset_rect, ¤t_state->clip, NULL);
|
|
}
|
|
|
|
/**
|
|
* gtk_snapshot_render_background:
|
|
* @snapshot: a #GtkSnapshot
|
|
* @context: the #GtkStyleContext to use
|
|
* @x: X origin of the rectangle
|
|
* @y: Y origin of the rectangle
|
|
* @width: rectangle width
|
|
* @height: rectangle height
|
|
*
|
|
* Creates a render node for the CSS background according to @context,
|
|
* and appends it to the current node of @snapshot, without changing
|
|
* the current node.
|
|
*/
|
|
void
|
|
gtk_snapshot_render_background (GtkSnapshot *snapshot,
|
|
GtkStyleContext *context,
|
|
gdouble x,
|
|
gdouble y,
|
|
gdouble width,
|
|
gdouble height)
|
|
{
|
|
g_return_if_fail (snapshot != NULL);
|
|
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
|
|
|
|
gtk_snapshot_offset (snapshot, x, y);
|
|
gtk_css_style_snapshot_background (gtk_style_context_lookup_style (context),
|
|
snapshot,
|
|
width, height);
|
|
gtk_snapshot_offset (snapshot, -x, -y);
|
|
}
|
|
|
|
/**
|
|
* gtk_snapshot_render_frame:
|
|
* @snapshot: a #GtkSnapshot
|
|
* @context: the #GtkStyleContext to use
|
|
* @x: X origin of the rectangle
|
|
* @y: Y origin of the rectangle
|
|
* @width: rectangle width
|
|
* @height: rectangle height
|
|
*
|
|
* Creates a render node for the CSS border according to @context,
|
|
* and appends it to the current node of @snapshot, without changing
|
|
* the current node.
|
|
*/
|
|
void
|
|
gtk_snapshot_render_frame (GtkSnapshot *snapshot,
|
|
GtkStyleContext *context,
|
|
gdouble x,
|
|
gdouble y,
|
|
gdouble width,
|
|
gdouble height)
|
|
{
|
|
g_return_if_fail (snapshot != NULL);
|
|
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
|
|
|
|
gtk_snapshot_offset (snapshot, x, y);
|
|
gtk_css_style_snapshot_border (gtk_style_context_lookup_style (context),
|
|
snapshot,
|
|
width, height);
|
|
gtk_snapshot_offset (snapshot, -x, -y);
|
|
}
|
|
|
|
/**
|
|
* gtk_snapshot_render_focus:
|
|
* @snapshot: a #GtkSnapshot
|
|
* @context: the #GtkStyleContext to use
|
|
* @x: X origin of the rectangle
|
|
* @y: Y origin of the rectangle
|
|
* @width: rectangle width
|
|
* @height: rectangle height
|
|
*
|
|
* Creates a render node for the focus outline according to @context,
|
|
* and appends it to the current node of @snapshot, without changing
|
|
* the current node.
|
|
*/
|
|
void
|
|
gtk_snapshot_render_focus (GtkSnapshot *snapshot,
|
|
GtkStyleContext *context,
|
|
gdouble x,
|
|
gdouble y,
|
|
gdouble width,
|
|
gdouble height)
|
|
{
|
|
g_return_if_fail (snapshot != NULL);
|
|
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
|
|
|
|
gtk_snapshot_offset (snapshot, x, y);
|
|
gtk_css_style_snapshot_outline (gtk_style_context_lookup_style (context),
|
|
snapshot,
|
|
width, height);
|
|
gtk_snapshot_offset (snapshot, -x, -y);
|
|
}
|
|
|
|
/**
|
|
* gtk_snapshot_render_layout:
|
|
* @snapshot: a #GtkSnapshot
|
|
* @context: the #GtkStyleContext to use
|
|
* @x: X origin of the rectangle
|
|
* @y: Y origin of the rectangle
|
|
* @layout: the #PangoLayout to render
|
|
*
|
|
* Creates a render node for rendering @layout according to the style
|
|
* information in @context, and appends it to the current node of @snapshot,
|
|
* without changing the current node.
|
|
*/
|
|
void
|
|
gtk_snapshot_render_layout (GtkSnapshot *snapshot,
|
|
GtkStyleContext *context,
|
|
gdouble x,
|
|
gdouble y,
|
|
PangoLayout *layout)
|
|
{
|
|
const GdkRGBA *fg_color;
|
|
GtkCssValue *shadows_value;
|
|
gboolean has_shadow;
|
|
|
|
g_return_if_fail (snapshot != NULL);
|
|
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
|
|
g_return_if_fail (PANGO_IS_LAYOUT (layout));
|
|
|
|
gtk_snapshot_offset (snapshot, x, y);
|
|
|
|
fg_color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_COLOR));
|
|
|
|
shadows_value = _gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_TEXT_SHADOW);
|
|
has_shadow = gtk_css_shadows_value_push_snapshot (shadows_value, snapshot);
|
|
|
|
gtk_snapshot_append_layout (snapshot, layout, fg_color, "RenderLayout");
|
|
|
|
if (has_shadow)
|
|
gtk_snapshot_pop (snapshot);
|
|
|
|
gtk_snapshot_offset (snapshot, -x, -y);
|
|
}
|
|
|
|
/*
|
|
* gtk_snapshot_append_linear_gradient:
|
|
* @snapshot: a #GtkSnapshot
|
|
* @bounds: the rectangle to render the linear gradient into
|
|
* @start: the point at which the linear gradient will begin
|
|
* @end: the point at which the linear gradient will finish
|
|
* @stops: (array length=n_stops): a pointer to an array of #GskColorStop defining the gradient
|
|
* @n_stops: the number of elements in @color_stops
|
|
*
|
|
* Appends a linear gradient node with the given stops to @snapshot.
|
|
*/
|
|
void
|
|
gtk_snapshot_append_linear_gradient (GtkSnapshot *snapshot,
|
|
const graphene_rect_t *bounds,
|
|
const graphene_point_t *start_point,
|
|
const graphene_point_t *end_point,
|
|
const GskColorStop *stops,
|
|
gsize n_stops,
|
|
const char *name,
|
|
...)
|
|
{
|
|
const GtkSnapshotState *current_state = gtk_snapshot_get_current_state (snapshot);
|
|
GskRenderNode *node;
|
|
graphene_rect_t real_bounds;
|
|
graphene_point_t real_start_point;
|
|
graphene_point_t real_end_point;
|
|
|
|
g_return_if_fail (snapshot != NULL);
|
|
g_return_if_fail (start_point != NULL);
|
|
g_return_if_fail (end_point != NULL);
|
|
g_return_if_fail (stops != NULL);
|
|
g_return_if_fail (n_stops > 1);
|
|
|
|
graphene_rect_offset_r (bounds, current_state->translate_x, current_state->translate_y, &real_bounds);
|
|
real_start_point.x = start_point->x + current_state->translate_x;
|
|
real_start_point.y = start_point->y + current_state->translate_y;
|
|
real_end_point.x = end_point->x + current_state->translate_x;
|
|
real_end_point.y = end_point->y + current_state->translate_y;
|
|
|
|
/* Linear gradients can be trivially clipped if we don't change the start/end points. */
|
|
if (current_state->has_clip)
|
|
graphene_rect_intersection (¤t_state->clip, &real_bounds, &real_bounds);
|
|
|
|
node = gsk_linear_gradient_node_new (&real_bounds,
|
|
&real_start_point,
|
|
&real_end_point,
|
|
stops,
|
|
n_stops);
|
|
|
|
if (name && snapshot->record_names)
|
|
{
|
|
va_list args;
|
|
char *str;
|
|
|
|
va_start (args, name);
|
|
str = g_strdup_vprintf (name, args);
|
|
va_end (args);
|
|
|
|
gsk_render_node_set_name (node, str);
|
|
|
|
g_free (str);
|
|
}
|
|
|
|
gtk_snapshot_append_node_internal (snapshot, node);
|
|
gsk_render_node_unref (node);
|
|
}
|
|
|
|
/*
|
|
* gtk_snapshot_append_repeating_linear_gradient:
|
|
* @snapshot: a #GtkSnapshot
|
|
* @bounds: the rectangle to render the linear gradient into
|
|
* @start: the point at which the linear gradient will begin
|
|
* @end: the point at which the linear gradient will finish
|
|
* @stops: (array length=n_stops): a pointer to an array of #GskColorStop defining the gradient
|
|
* @n_stops: the number of elements in @color_stops
|
|
*
|
|
* Appends a repeating linear gradient node with the given stops to @snapshot.
|
|
*/
|
|
void
|
|
gtk_snapshot_append_repeating_linear_gradient (GtkSnapshot *snapshot,
|
|
const graphene_rect_t *bounds,
|
|
const graphene_point_t *start_point,
|
|
const graphene_point_t *end_point,
|
|
const GskColorStop *stops,
|
|
gsize n_stops,
|
|
const char *name,
|
|
...)
|
|
{
|
|
const GtkSnapshotState *current_state = gtk_snapshot_get_current_state (snapshot);
|
|
GskRenderNode *node;
|
|
graphene_rect_t real_bounds;
|
|
graphene_point_t real_start_point;
|
|
graphene_point_t real_end_point;
|
|
|
|
g_return_if_fail (snapshot != NULL);
|
|
g_return_if_fail (start_point != NULL);
|
|
g_return_if_fail (end_point != NULL);
|
|
g_return_if_fail (stops != NULL);
|
|
g_return_if_fail (n_stops > 1);
|
|
|
|
graphene_rect_offset_r (bounds, current_state->translate_x, current_state->translate_y, &real_bounds);
|
|
real_start_point.x = start_point->x + current_state->translate_x;
|
|
real_start_point.y = start_point->y + current_state->translate_y;
|
|
real_end_point.x = end_point->x + current_state->translate_x;
|
|
real_end_point.y = end_point->y + current_state->translate_y;
|
|
|
|
/* Repeating Linear gradients can be trivially clipped if we don't change the start/end points. */
|
|
if (current_state->has_clip)
|
|
graphene_rect_intersection (¤t_state->clip, &real_bounds, &real_bounds);
|
|
|
|
node = gsk_repeating_linear_gradient_node_new (&real_bounds,
|
|
&real_start_point,
|
|
&real_end_point,
|
|
stops,
|
|
n_stops);
|
|
|
|
if (name && snapshot->record_names)
|
|
{
|
|
va_list args;
|
|
char *str;
|
|
|
|
va_start (args, name);
|
|
str = g_strdup_vprintf (name, args);
|
|
va_end (args);
|
|
|
|
gsk_render_node_set_name (node, str);
|
|
|
|
g_free (str);
|
|
}
|
|
|
|
gtk_snapshot_append_node_internal (snapshot, node);
|
|
gsk_render_node_unref (node);
|
|
}
|