forked from AuroraMiddleware/gtk
GtkGLArea: Add INPUT_ONLY window so that we can get events
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5ea3a1028d
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@ -119,6 +119,7 @@
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typedef struct {
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GdkGLContext *context;
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GdkWindow *event_window;
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GError *error;
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gboolean have_buffers;
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@ -245,14 +246,29 @@ static void
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gtk_gl_area_realize (GtkWidget *widget)
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{
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GtkGLAreaPrivate *priv = gtk_gl_area_get_instance_private ((GtkGLArea *) widget);
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GdkWindow *window;
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GtkAllocation allocation;
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GdkWindowAttr attributes;
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gint attributes_mask;
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GTK_WIDGET_CLASS (gtk_gl_area_parent_class)->realize (widget);
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window = gtk_widget_get_window (widget);
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priv->context = gdk_window_create_gl_context (window,
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GDK_GL_PROFILE_DEFAULT,
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&priv->error);
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attributes.window_type = GDK_WINDOW_CHILD;
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attributes.x = allocation.x;
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attributes.y = allocation.y;
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attributes.width = allocation.width;
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attributes.height = allocation.height;
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attributes.wclass = GDK_INPUT_ONLY;
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attributes.event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
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attributes_mask = GDK_WA_X | GDK_WA_Y;
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priv->event_window = gdk_window_new (gtk_widget_get_parent_window (widget),
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&attributes, attributes_mask);
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gtk_widget_register_window (widget, priv->event_window);
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priv->context = gdk_window_create_gl_context (gtk_widget_get_window (widget),
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GDK_GL_PROFILE_DEFAULT,
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&priv->error);
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}
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/*
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@ -468,9 +484,40 @@ gtk_gl_area_unrealize (GtkWidget *widget)
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g_clear_error (&priv->error);
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if (priv->event_window != NULL)
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{
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gtk_widget_unregister_window (widget, priv->event_window);
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gdk_window_destroy (priv->event_window);
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priv->event_window = NULL;
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}
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GTK_WIDGET_CLASS (gtk_gl_area_parent_class)->unrealize (widget);
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}
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static void
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gtk_gl_area_map (GtkWidget *widget)
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{
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GtkGLArea *area = GTK_GL_AREA (widget);
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GtkGLAreaPrivate *priv = gtk_gl_area_get_instance_private (area);
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if (priv->event_window != NULL)
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gdk_window_show (priv->event_window);
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GTK_WIDGET_CLASS (gtk_gl_area_parent_class)->map (widget);
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}
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static void
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gtk_gl_area_unmap (GtkWidget *widget)
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{
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GtkGLArea *area = GTK_GL_AREA (widget);
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GtkGLAreaPrivate *priv = gtk_gl_area_get_instance_private (area);
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if (priv->event_window != NULL)
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gdk_window_hide (priv->event_window);
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GTK_WIDGET_CLASS (gtk_gl_area_parent_class)->unmap (widget);
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}
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static void
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gtk_gl_area_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation)
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@ -480,6 +527,14 @@ gtk_gl_area_size_allocate (GtkWidget *widget,
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GTK_WIDGET_CLASS (gtk_gl_area_parent_class)->size_allocate (widget, allocation);
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if (gtk_widget_get_realized (widget) &&
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priv->event_window != NULL)
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gdk_window_move_resize (priv->event_window,
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allocation->x,
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allocation->y,
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allocation->width,
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allocation->height);
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priv->needs_render = TRUE;
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gtk_gl_area_maybe_allocate_buffers (area);
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}
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@ -573,6 +628,8 @@ gtk_gl_area_class_init (GtkGLAreaClass *klass)
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widget_class->realize = gtk_gl_area_realize;
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widget_class->unrealize = gtk_gl_area_unrealize;
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widget_class->map = gtk_gl_area_map;
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widget_class->unmap = gtk_gl_area_unmap;
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widget_class->size_allocate = gtk_gl_area_size_allocate;
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widget_class->draw = gtk_gl_area_draw;
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