1 /* SPDX-FileCopyrightText: 2020 Jason Francis <jason@cycles.network>
2 * SPDX-License-Identifier: GPL-3.0-or-later */
3
4 #include "glviewport.h"
5
6 typedef struct _WdGLViewportPrivate {
7 GtkAdjustment *hadjustment;
8 GtkAdjustment *vadjustment;
9 guint hscroll_policy : 1;
10 guint vscroll_policy : 1;
11 } WdGLViewportPrivate;
12
13 enum {
14 PROP_0,
15 PROP_HADJUSTMENT,
16 PROP_VADJUSTMENT,
17 PROP_HSCROLL_POLICY,
18 PROP_VSCROLL_POLICY
19 };
20
21 static void wd_gl_viewport_set_property(
22 GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
23 static void wd_gl_viewport_get_property(
24 GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
25
G_DEFINE_TYPE_WITH_CODE(WdGLViewport,wd_gl_viewport,GTK_TYPE_GL_AREA,G_ADD_PRIVATE (WdGLViewport)G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE,NULL))26 G_DEFINE_TYPE_WITH_CODE(WdGLViewport, wd_gl_viewport, GTK_TYPE_GL_AREA,
27 G_ADD_PRIVATE(WdGLViewport)
28 G_IMPLEMENT_INTERFACE(GTK_TYPE_SCROLLABLE, NULL))
29
30 static void wd_gl_viewport_class_init(WdGLViewportClass *class) {
31 GObjectClass *gobject_class = G_OBJECT_CLASS(class);
32
33 gobject_class->set_property = wd_gl_viewport_set_property;
34 gobject_class->get_property = wd_gl_viewport_get_property;
35
36 g_object_class_override_property(gobject_class, PROP_HADJUSTMENT, "hadjustment");
37 g_object_class_override_property(gobject_class, PROP_VADJUSTMENT, "vadjustment");
38 g_object_class_override_property(gobject_class, PROP_HSCROLL_POLICY, "hscroll-policy");
39 g_object_class_override_property(gobject_class, PROP_VSCROLL_POLICY, "vscroll-policy");
40 }
41
viewport_set_adjustment(GtkAdjustment * adjustment,GtkAdjustment ** store)42 static void viewport_set_adjustment(GtkAdjustment *adjustment,
43 GtkAdjustment **store) {
44 if (!adjustment) {
45 adjustment = gtk_adjustment_new(0., 0., 0., 0., 0., 0.);
46 }
47 if (adjustment != *store) {
48 if (*store != NULL) {
49 g_object_unref(*store);
50 }
51 *store = adjustment;
52 g_object_ref_sink(adjustment);
53 }
54 }
55
wd_gl_viewport_set_property(GObject * object,guint prop_id,const GValue * value,GParamSpec * pspec)56 static void wd_gl_viewport_set_property(
57 GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) {
58 WdGLViewport *viewport = WD_GL_VIEWPORT(object);
59 WdGLViewportPrivate *priv = wd_gl_viewport_get_instance_private(viewport);
60
61 switch (prop_id) {
62 case PROP_HADJUSTMENT:
63 viewport_set_adjustment(g_value_get_object(value), &priv->hadjustment);
64 break;
65 case PROP_VADJUSTMENT:
66 viewport_set_adjustment(g_value_get_object(value), &priv->vadjustment);
67 break;
68 case PROP_HSCROLL_POLICY:
69 if (priv->hscroll_policy != g_value_get_enum(value)) {
70 priv->hscroll_policy = g_value_get_enum(value);
71 g_object_notify_by_pspec(object, pspec);
72 }
73 break;
74 case PROP_VSCROLL_POLICY:
75 if (priv->vscroll_policy != g_value_get_enum(value)) {
76 priv->vscroll_policy = g_value_get_enum(value);
77 g_object_notify_by_pspec (object, pspec);
78 }
79 break;
80 default:
81 G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
82 break;
83 }
84 }
85
wd_gl_viewport_get_property(GObject * object,guint prop_id,GValue * value,GParamSpec * pspec)86 static void wd_gl_viewport_get_property(
87 GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) {
88 WdGLViewport *viewport = WD_GL_VIEWPORT(object);
89 WdGLViewportPrivate *priv = wd_gl_viewport_get_instance_private(viewport);
90
91 switch (prop_id) {
92 case PROP_HADJUSTMENT:
93 g_value_set_object(value, priv->hadjustment);
94 break;
95 case PROP_VADJUSTMENT:
96 g_value_set_object(value, priv->vadjustment);
97 break;
98 case PROP_HSCROLL_POLICY:
99 g_value_set_enum(value, priv->hscroll_policy);
100 break;
101 case PROP_VSCROLL_POLICY:
102 g_value_set_enum(value, priv->vscroll_policy);
103 break;
104 default:
105 G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
106 break;
107 }
108 }
109
wd_gl_viewport_init(WdGLViewport * viewport)110 static void wd_gl_viewport_init(WdGLViewport *viewport) {
111 }
112
wd_gl_viewport_new(void)113 GtkWidget *wd_gl_viewport_new(void) {
114 return gtk_widget_new(WD_TYPE_GL_VIEWPORT, NULL);
115 }
116