1 | /* GSK - The GTK Scene Kit |
2 | * |
3 | * Copyright 2017 Red Hat, Inc. |
4 | * |
5 | * This library is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU Lesser General Public |
7 | * License as published by the Free Software Foundation; either |
8 | * version 2 of the License, or (at your option) any later version. |
9 | * |
10 | * This library is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | * Lesser General Public License for more details. |
14 | * |
15 | * You should have received a copy of the GNU Lesser General Public |
16 | * License along with this library. If not, see <http://www.gnu.org/licenses/>. |
17 | */ |
18 | |
19 | #ifndef __GSK_PANGO_H__ |
20 | #define __GSK_PANGO_H__ |
21 | |
22 | #include <pango/pango.h> |
23 | #include "gtk/gtksnapshot.h" |
24 | |
25 | G_BEGIN_DECLS |
26 | |
27 | #define GSK_TYPE_PANGO_RENDERER (gsk_pango_renderer_get_type ()) |
28 | #define GSK_PANGO_RENDERER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GSK_TYPE_PANGO_RENDERER, GskPangoRenderer)) |
29 | #define GSK_IS_PANGO_RENDERER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GSK_TYPE_PANGO_RENDERER)) |
30 | #define GSK_PANGO_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GSK_TYPE_PANGO_RENDERER, GskPangoRendererClass)) |
31 | #define GSK_IS_PANGO_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GSK_TYPE_PANGO_RENDERER)) |
32 | #define GSK_PANGO_RENDERER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GSK_TYPE_PANGO_RENDERER, GskPangoRendererClass)) |
33 | |
34 | typedef struct _GskPangoRenderer GskPangoRenderer; |
35 | typedef struct _GskPangoRendererClass GskPangoRendererClass; |
36 | |
37 | typedef enum |
38 | { |
39 | GSK_PANGO_RENDERER_NORMAL, |
40 | GSK_PANGO_RENDERER_SELECTED, |
41 | GSK_PANGO_RENDERER_CURSOR |
42 | } GskPangoRendererState; |
43 | |
44 | typedef gboolean (*GskPangoShapeHandler) (PangoAttrShape *attr, |
45 | GdkSnapshot *snapshot, |
46 | double width, |
47 | double height); |
48 | |
49 | /* |
50 | * This is a PangoRenderer implementation that translates all the draw calls to |
51 | * gsk render nodes, using the GtkSnapshot helper class. Glyphs are translated |
52 | * to text nodes, other draw calls may fall back to cairo nodes. |
53 | */ |
54 | |
55 | struct _GskPangoRenderer |
56 | { |
57 | PangoRenderer parent_instance; |
58 | |
59 | GtkWidget *widget; |
60 | GtkSnapshot *snapshot; |
61 | const GdkRGBA *fg_color; |
62 | |
63 | /* Error underline color for this widget */ |
64 | GdkRGBA *error_color; |
65 | |
66 | GskPangoRendererState state; |
67 | |
68 | guint is_cached_renderer : 1; |
69 | |
70 | GskPangoShapeHandler shape_handler; |
71 | }; |
72 | |
73 | struct _GskPangoRendererClass |
74 | { |
75 | PangoRendererClass parent_class; |
76 | }; |
77 | |
78 | GType gsk_pango_renderer_get_type (void) G_GNUC_CONST; |
79 | void gsk_pango_renderer_set_state (GskPangoRenderer *crenderer, |
80 | GskPangoRendererState state); |
81 | void gsk_pango_renderer_set_shape_handler (GskPangoRenderer *crenderer, |
82 | GskPangoShapeHandler handler); |
83 | GskPangoRenderer *gsk_pango_renderer_acquire (void); |
84 | void gsk_pango_renderer_release (GskPangoRenderer *crenderer); |
85 | |
86 | G_END_DECLS |
87 | |
88 | #endif /* __GSK_PANGO_H__ */ |
89 | |