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/* GSK - The GTK Scene Kit
*
* Copyright 2017 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __GSK_PANGO_H__
#define __GSK_PANGO_H__
#include <pango/pango.h>
#include "gtk/gtksnapshot.h"
G_BEGIN_DECLS
#define GSK_TYPE_PANGO_RENDERER (gsk_pango_renderer_get_type ())
#define GSK_PANGO_RENDERER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GSK_TYPE_PANGO_RENDERER, GskPangoRenderer))
#define GSK_IS_PANGO_RENDERER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GSK_TYPE_PANGO_RENDERER))
#define GSK_PANGO_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GSK_TYPE_PANGO_RENDERER, GskPangoRendererClass))
#define GSK_IS_PANGO_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GSK_TYPE_PANGO_RENDERER))
#define GSK_PANGO_RENDERER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GSK_TYPE_PANGO_RENDERER, GskPangoRendererClass))
typedef struct _GskPangoRenderer GskPangoRenderer;
typedef struct _GskPangoRendererClass GskPangoRendererClass;
typedef enum
{
GSK_PANGO_RENDERER_NORMAL,
GSK_PANGO_RENDERER_SELECTED,
GSK_PANGO_RENDERER_CURSOR
} GskPangoRendererState;
typedef gboolean (*GskPangoShapeHandler) (PangoAttrShape *attr,
GdkSnapshot *snapshot,
double width,
double height);
/*
* This is a PangoRenderer implementation that translates all the draw calls to
* gsk render nodes, using the GtkSnapshot helper class. Glyphs are translated
* to text nodes, all other draw calls fall back to cairo nodes.
*/
struct _GskPangoRenderer
{
PangoRenderer parent_instance;
GtkWidget *widget;
GtkSnapshot *snapshot;
GdkRGBA fg_color;
graphene_rect_t bounds;
/* Error underline color for this widget */
GdkRGBA *error_color;
GskPangoRendererState state;
GskPangoShapeHandler shape_handler;
/* house-keeping options */
guint is_cached_renderer : 1;
};
struct _GskPangoRendererClass
{
PangoRendererClass parent_class;
};
GType gsk_pango_renderer_get_type (void) G_GNUC_CONST;
void gsk_pango_renderer_set_state (GskPangoRenderer *crenderer,
GskPangoRendererState state);
void gsk_pango_renderer_set_shape_handler (GskPangoRenderer *crenderer,
GskPangoShapeHandler handler);
GskPangoRenderer *gsk_pango_renderer_acquire (void);
void gsk_pango_renderer_release (GskPangoRenderer *crenderer);
G_END_DECLS
#endif /* __GSK_PANGO_H__ */
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