forked from AuroraMiddleware/gtk
dace0791a9
While porting GTK to GskRenderer we noticed that the current fallback code for widgets using Cairo to draw is not enough to cover all the possible cases. For instance, if a container widget still uses GtkWidget::draw to render its children, and at least one of them has been ported to using render nodes instead, the container won't know how to draw it. For this reason we want to provide to layers above GSK the ability to create a "fallback" renderer instance, created using a "parent" GskRenderer instance, but using a Cairo context as the rendering target instead of a GdkDrawingContext. GTK will use this inside the gtk_widget_draw() implementation, if a widget implements GtkWidgetClass.get_render_node().
58 lines
1.9 KiB
C
58 lines
1.9 KiB
C
/* GSK - The GTK Scene Kit
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*
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* Copyright 2016 Endless
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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 __GSK_RENDERER_PRIVATE_H__
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#define __GSK_RENDERER_PRIVATE_H__
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#include "gskrenderer.h"
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#include "gskprofilerprivate.h"
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G_BEGIN_DECLS
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#define GSK_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GSK_TYPE_RENDERER, GskRendererClass))
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#define GSK_IS_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GSK_TYPE_RENDERER))
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#define GSK_RENDERER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GSK_TYPE_RENDERER, GskRendererClass))
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struct _GskRenderer
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{
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GObject parent_instance;
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};
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struct _GskRendererClass
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{
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GObjectClass parent_class;
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gboolean (* realize) (GskRenderer *renderer);
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void (* unrealize) (GskRenderer *renderer);
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void (* render) (GskRenderer *renderer,
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GskRenderNode *root);
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};
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gboolean gsk_renderer_is_realized (GskRenderer *renderer);
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GskRenderNode * gsk_renderer_get_root_node (GskRenderer *renderer);
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GdkDrawingContext * gsk_renderer_get_drawing_context (GskRenderer *renderer);
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cairo_t * gsk_renderer_get_cairo_context (GskRenderer *renderer);
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GskProfiler * gsk_renderer_get_profiler (GskRenderer *renderer);
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G_END_DECLS
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#endif /* __GSK_RENDERER_PRIVATE_H__ */
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