1 | /* |
2 | * Copyright © 2018 Benjamin Otte |
3 | * |
4 | * This library is free software; you can redistribute it and/or |
5 | * modify it under the terms of the GNU Lesser General Public |
6 | * License as published by the Free Software Foundation; either |
7 | * version 2.1 of the License, or (at your option) any later version. |
8 | * |
9 | * This library is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with this library. If not, see <http://www.gnu.org/licenses/>. |
16 | * |
17 | * Authors: Benjamin Otte <otte@gnome.org> |
18 | */ |
19 | |
20 | #include "config.h" |
21 | |
22 | #include "gtkrendernodepaintableprivate.h" |
23 | |
24 | #include "gtksnapshot.h" |
25 | |
26 | struct _GtkRenderNodePaintable |
27 | { |
28 | GObject parent_instance; |
29 | |
30 | GskRenderNode *node; |
31 | graphene_rect_t bounds; |
32 | }; |
33 | |
34 | struct _GtkRenderNodePaintableClass |
35 | { |
36 | GObjectClass parent_class; |
37 | }; |
38 | |
39 | static void |
40 | gtk_render_node_paintable_paintable_snapshot (GdkPaintable *paintable, |
41 | GdkSnapshot *snapshot, |
42 | double width, |
43 | double height) |
44 | { |
45 | GtkRenderNodePaintable *self = GTK_RENDER_NODE_PAINTABLE (ptr: paintable); |
46 | |
47 | if (self->bounds.size.width <= 0 || |
48 | self->bounds.size.height <= 0) |
49 | return; |
50 | |
51 | gtk_snapshot_save (snapshot); |
52 | |
53 | gtk_snapshot_scale (snapshot, |
54 | factor_x: width / (self->bounds.size.width), |
55 | factor_y: height / (self->bounds.size.height)); |
56 | gtk_snapshot_translate (snapshot, point: &GRAPHENE_POINT_INIT (-self->bounds.origin.x, -self->bounds.origin.y)); |
57 | |
58 | gtk_snapshot_push_clip (snapshot, bounds: &self->bounds); |
59 | |
60 | gtk_snapshot_append_node (snapshot, node: self->node); |
61 | //gtk_snapshot_append_color (snapshot, &(GdkRGBA) { 1, 0, 0, 1 }, &self->bounds); |
62 | |
63 | gtk_snapshot_pop (snapshot); |
64 | |
65 | gtk_snapshot_restore (snapshot); |
66 | } |
67 | |
68 | static GdkPaintableFlags |
69 | gtk_render_node_paintable_paintable_get_flags (GdkPaintable *paintable) |
70 | { |
71 | return GDK_PAINTABLE_STATIC_CONTENTS | GDK_PAINTABLE_STATIC_SIZE; |
72 | } |
73 | |
74 | static int |
75 | gtk_render_node_paintable_paintable_get_intrinsic_width (GdkPaintable *paintable) |
76 | { |
77 | GtkRenderNodePaintable *self = GTK_RENDER_NODE_PAINTABLE (ptr: paintable); |
78 | |
79 | return ceilf (x: self->bounds.size.width); |
80 | } |
81 | |
82 | static int |
83 | gtk_render_node_paintable_paintable_get_intrinsic_height (GdkPaintable *paintable) |
84 | { |
85 | GtkRenderNodePaintable *self = GTK_RENDER_NODE_PAINTABLE (ptr: paintable); |
86 | |
87 | return ceilf (x: self->bounds.size.height); |
88 | } |
89 | |
90 | static double |
91 | gtk_render_node_paintable_paintable_get_intrinsic_aspect_ratio (GdkPaintable *paintable) |
92 | { |
93 | GtkRenderNodePaintable *self = GTK_RENDER_NODE_PAINTABLE (ptr: paintable); |
94 | |
95 | if (self->bounds.size.height != 0) |
96 | return self->bounds.size.width / self->bounds.size.height; |
97 | |
98 | return 0; |
99 | } |
100 | |
101 | static void |
102 | gtk_render_node_paintable_paintable_init (GdkPaintableInterface *iface) |
103 | { |
104 | iface->snapshot = gtk_render_node_paintable_paintable_snapshot; |
105 | iface->get_flags = gtk_render_node_paintable_paintable_get_flags; |
106 | iface->get_intrinsic_width = gtk_render_node_paintable_paintable_get_intrinsic_width; |
107 | iface->get_intrinsic_height = gtk_render_node_paintable_paintable_get_intrinsic_height; |
108 | iface->get_intrinsic_aspect_ratio = gtk_render_node_paintable_paintable_get_intrinsic_aspect_ratio; |
109 | } |
110 | |
111 | G_DEFINE_TYPE_EXTENDED (GtkRenderNodePaintable, gtk_render_node_paintable, G_TYPE_OBJECT, 0, |
112 | G_IMPLEMENT_INTERFACE (GDK_TYPE_PAINTABLE, |
113 | gtk_render_node_paintable_paintable_init)) |
114 | |
115 | static void |
116 | gtk_render_node_paintable_dispose (GObject *object) |
117 | { |
118 | GtkRenderNodePaintable *self = GTK_RENDER_NODE_PAINTABLE (ptr: object); |
119 | |
120 | g_clear_pointer (&self->node, gsk_render_node_unref); |
121 | |
122 | G_OBJECT_CLASS (gtk_render_node_paintable_parent_class)->dispose (object); |
123 | } |
124 | |
125 | static void |
126 | gtk_render_node_paintable_class_init (GtkRenderNodePaintableClass *klass) |
127 | { |
128 | GObjectClass *gobject_class = G_OBJECT_CLASS (klass); |
129 | |
130 | gobject_class->dispose = gtk_render_node_paintable_dispose; |
131 | } |
132 | |
133 | static void |
134 | gtk_render_node_paintable_init (GtkRenderNodePaintable *self) |
135 | { |
136 | } |
137 | |
138 | GdkPaintable * |
139 | gtk_render_node_paintable_new (GskRenderNode *node, |
140 | const graphene_rect_t *bounds) |
141 | { |
142 | GtkRenderNodePaintable *self; |
143 | |
144 | g_return_val_if_fail (GSK_IS_RENDER_NODE (node), NULL); |
145 | g_return_val_if_fail (bounds != NULL, NULL); |
146 | |
147 | self = g_object_new (GTK_TYPE_RENDER_NODE_PAINTABLE, NULL); |
148 | |
149 | self->node = gsk_render_node_ref (node); |
150 | self->bounds = *bounds; |
151 | |
152 | return GDK_PAINTABLE (ptr: self); |
153 | } |
154 | |
155 | GskRenderNode * |
156 | gtk_render_node_paintable_get_render_node (GtkRenderNodePaintable *self) |
157 | { |
158 | g_return_val_if_fail (GTK_IS_RENDER_NODE_PAINTABLE (self), NULL); |
159 | |
160 | return self->node; |
161 | } |
162 | |