116 lines
3.5 KiB
C
116 lines
3.5 KiB
C
/* SPDX-FileCopyrightText: 2020 Jason Francis <jason@cycles.network>
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* SPDX-License-Identifier: GPL-3.0-or-later */
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#include "glviewport.h"
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typedef struct _WdGLViewportPrivate {
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GtkAdjustment *hadjustment;
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GtkAdjustment *vadjustment;
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guint hscroll_policy : 1;
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guint vscroll_policy : 1;
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} WdGLViewportPrivate;
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enum {
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PROP_0,
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PROP_HADJUSTMENT,
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PROP_VADJUSTMENT,
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PROP_HSCROLL_POLICY,
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PROP_VSCROLL_POLICY
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};
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static void wd_gl_viewport_set_property(
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GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
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static void wd_gl_viewport_get_property(
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GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
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G_DEFINE_TYPE_WITH_CODE(WdGLViewport, wd_gl_viewport, GTK_TYPE_GL_AREA,
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G_ADD_PRIVATE(WdGLViewport)
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G_IMPLEMENT_INTERFACE(GTK_TYPE_SCROLLABLE, NULL))
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static void wd_gl_viewport_class_init(WdGLViewportClass *class) {
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GObjectClass *gobject_class = G_OBJECT_CLASS(class);
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gobject_class->set_property = wd_gl_viewport_set_property;
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gobject_class->get_property = wd_gl_viewport_get_property;
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g_object_class_override_property(gobject_class, PROP_HADJUSTMENT, "hadjustment");
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g_object_class_override_property(gobject_class, PROP_VADJUSTMENT, "vadjustment");
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g_object_class_override_property(gobject_class, PROP_HSCROLL_POLICY, "hscroll-policy");
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g_object_class_override_property(gobject_class, PROP_VSCROLL_POLICY, "vscroll-policy");
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}
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static void viewport_set_adjustment(GtkAdjustment *adjustment,
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GtkAdjustment **store) {
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if (!adjustment) {
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adjustment = gtk_adjustment_new(0., 0., 0., 0., 0., 0.);
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}
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if (adjustment != *store) {
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if (*store != NULL) {
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g_object_unref(*store);
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}
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*store = adjustment;
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g_object_ref_sink(adjustment);
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}
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}
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static void wd_gl_viewport_set_property(
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GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) {
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WdGLViewport *viewport = WD_GL_VIEWPORT(object);
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WdGLViewportPrivate *priv = wd_gl_viewport_get_instance_private(viewport);
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switch (prop_id) {
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case PROP_HADJUSTMENT:
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viewport_set_adjustment(g_value_get_object(value), &priv->hadjustment);
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break;
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case PROP_VADJUSTMENT:
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viewport_set_adjustment(g_value_get_object(value), &priv->vadjustment);
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break;
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case PROP_HSCROLL_POLICY:
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if (priv->hscroll_policy != g_value_get_enum(value)) {
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priv->hscroll_policy = g_value_get_enum(value);
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g_object_notify_by_pspec(object, pspec);
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}
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break;
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case PROP_VSCROLL_POLICY:
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if (priv->vscroll_policy != g_value_get_enum(value)) {
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priv->vscroll_policy = g_value_get_enum(value);
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g_object_notify_by_pspec (object, pspec);
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}
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
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break;
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}
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}
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static void wd_gl_viewport_get_property(
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GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) {
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WdGLViewport *viewport = WD_GL_VIEWPORT(object);
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WdGLViewportPrivate *priv = wd_gl_viewport_get_instance_private(viewport);
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switch (prop_id) {
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case PROP_HADJUSTMENT:
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g_value_set_object(value, priv->hadjustment);
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break;
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case PROP_VADJUSTMENT:
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g_value_set_object(value, priv->vadjustment);
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break;
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case PROP_HSCROLL_POLICY:
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g_value_set_enum(value, priv->hscroll_policy);
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break;
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case PROP_VSCROLL_POLICY:
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g_value_set_enum(value, priv->vscroll_policy);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
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break;
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}
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}
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static void wd_gl_viewport_init(WdGLViewport *viewport) {
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}
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GtkWidget *wd_gl_viewport_new(void) {
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return gtk_widget_new(WD_TYPE_GL_VIEWPORT, NULL);
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}
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