forked from AuroraMiddleware/gtk
149 lines
4.4 KiB
C
149 lines
4.4 KiB
C
/*
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* Copyright © 2018 Benjamin Otte
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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 2.1 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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* Authors: Benjamin Otte <otte@gnome.org>
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*/
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#include "config.h"
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#include "gtkrendernodepaintableprivate.h"
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#include "gtksnapshot.h"
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struct _GtkRenderNodePaintable
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{
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GObject parent_instance;
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GskRenderNode *node;
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graphene_rect_t bounds;
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};
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struct _GtkRenderNodePaintableClass
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{
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GObjectClass parent_class;
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};
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static void
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gtk_render_node_paintable_paintable_snapshot (GdkPaintable *paintable,
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GdkSnapshot *snapshot,
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double width,
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double height)
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{
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GtkRenderNodePaintable *self = GTK_RENDER_NODE_PAINTABLE (paintable);
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gboolean needs_transform;
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needs_transform = self->bounds.size.width != width ||
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self->bounds.size.height != height;
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if (needs_transform)
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{
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graphene_matrix_t transform;
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graphene_matrix_init_scale (&transform,
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width / (self->bounds.size.width),
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height / (self->bounds.size.height),
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1.0);
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gtk_snapshot_push_transform (snapshot,
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&transform);
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}
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gtk_snapshot_push_clip (snapshot, &self->bounds);
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gtk_snapshot_offset (snapshot, -self->bounds.origin.x, -self->bounds.origin.y);
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gtk_snapshot_append_node (snapshot, self->node);
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gtk_snapshot_offset (snapshot, self->bounds.origin.x, self->bounds.origin.y);
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gtk_snapshot_pop (snapshot);
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if (needs_transform)
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gtk_snapshot_pop (snapshot);
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}
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static GdkPaintableFlags
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gtk_render_node_paintable_paintable_get_flags (GdkPaintable *paintable)
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{
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return GDK_PAINTABLE_STATIC_CONTENTS | GDK_PAINTABLE_STATIC_SIZE;
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}
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static int
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gtk_render_node_paintable_paintable_get_intrinsic_width (GdkPaintable *paintable)
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{
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GtkRenderNodePaintable *self = GTK_RENDER_NODE_PAINTABLE (paintable);
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return self->bounds.size.width;
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}
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static int
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gtk_render_node_paintable_paintable_get_intrinsic_height (GdkPaintable *paintable)
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{
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GtkRenderNodePaintable *self = GTK_RENDER_NODE_PAINTABLE (paintable);
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return self->bounds.size.height;
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}
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static void
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gtk_render_node_paintable_paintable_init (GdkPaintableInterface *iface)
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{
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iface->snapshot = gtk_render_node_paintable_paintable_snapshot;
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iface->get_flags = gtk_render_node_paintable_paintable_get_flags;
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iface->get_intrinsic_width = gtk_render_node_paintable_paintable_get_intrinsic_width;
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iface->get_intrinsic_height = gtk_render_node_paintable_paintable_get_intrinsic_height;
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}
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G_DEFINE_TYPE_EXTENDED (GtkRenderNodePaintable, gtk_render_node_paintable, G_TYPE_OBJECT, 0,
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G_IMPLEMENT_INTERFACE (GDK_TYPE_PAINTABLE,
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gtk_render_node_paintable_paintable_init))
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static void
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gtk_render_node_paintable_dispose (GObject *object)
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{
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GtkRenderNodePaintable *self = GTK_RENDER_NODE_PAINTABLE (object);
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g_clear_pointer (&self->node, gsk_render_node_unref);
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G_OBJECT_CLASS (gtk_render_node_paintable_parent_class)->dispose (object);
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}
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static void
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gtk_render_node_paintable_class_init (GtkRenderNodePaintableClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->dispose = gtk_render_node_paintable_dispose;
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}
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static void
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gtk_render_node_paintable_init (GtkRenderNodePaintable *self)
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{
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}
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GdkPaintable *
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gtk_render_node_paintable_new (GskRenderNode *node,
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const graphene_rect_t *bounds)
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{
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GtkRenderNodePaintable *self;
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g_return_val_if_fail (GSK_IS_RENDER_NODE (node), NULL);
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g_return_val_if_fail (bounds != NULL, NULL);
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self = g_object_new (GTK_TYPE_RENDER_NODE_PAINTABLE, NULL);
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self->node = gsk_render_node_ref (node);
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self->bounds = *bounds;
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return GDK_PAINTABLE (self);
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}
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