forked from AuroraMiddleware/gtk
90 lines
3.3 KiB
C
90 lines
3.3 KiB
C
/* GSK - The GTK Scene Kit
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*
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* Copyright 2017 Red Hat, Inc.
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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_PANGO_H__
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#define __GSK_PANGO_H__
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#include <pango/pango.h>
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#include "gtk/gtksnapshot.h"
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G_BEGIN_DECLS
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#define GSK_TYPE_PANGO_RENDERER (gsk_pango_renderer_get_type ())
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#define GSK_PANGO_RENDERER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GSK_TYPE_PANGO_RENDERER, GskPangoRenderer))
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#define GSK_IS_PANGO_RENDERER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GSK_TYPE_PANGO_RENDERER))
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#define GSK_PANGO_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GSK_TYPE_PANGO_RENDERER, GskPangoRendererClass))
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#define GSK_IS_PANGO_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GSK_TYPE_PANGO_RENDERER))
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#define GSK_PANGO_RENDERER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GSK_TYPE_PANGO_RENDERER, GskPangoRendererClass))
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typedef struct _GskPangoRenderer GskPangoRenderer;
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typedef struct _GskPangoRendererClass GskPangoRendererClass;
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typedef enum
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{
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GSK_PANGO_RENDERER_NORMAL,
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GSK_PANGO_RENDERER_SELECTED,
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GSK_PANGO_RENDERER_CURSOR
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} GskPangoRendererState;
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typedef gboolean (*GskPangoShapeHandler) (PangoAttrShape *attr,
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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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* This is a PangoRenderer implementation that translates all the draw calls to
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* gsk render nodes, using the GtkSnapshot helper class. Glyphs are translated
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* to text nodes, all other draw calls fall back to cairo nodes.
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*/
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struct _GskPangoRenderer
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{
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PangoRenderer parent_instance;
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GtkWidget *widget;
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GtkSnapshot *snapshot;
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GdkRGBA fg_color;
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graphene_rect_t bounds;
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/* Error underline color for this widget */
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GdkRGBA *error_color;
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GskPangoRendererState state;
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GskPangoShapeHandler shape_handler;
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/* house-keeping options */
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guint is_cached_renderer : 1;
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};
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struct _GskPangoRendererClass
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{
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PangoRendererClass parent_class;
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};
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GType gsk_pango_renderer_get_type (void) G_GNUC_CONST;
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void gsk_pango_renderer_set_state (GskPangoRenderer *crenderer,
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GskPangoRendererState state);
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void gsk_pango_renderer_set_shape_handler (GskPangoRenderer *crenderer,
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GskPangoShapeHandler handler);
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GskPangoRenderer *gsk_pango_renderer_acquire (void);
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void gsk_pango_renderer_release (GskPangoRenderer *crenderer);
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G_END_DECLS
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#endif /* __GSK_PANGO_H__ */
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