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GtkGLArea: Add INPUT_ONLY window so that we can get events

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This commit is contained in:
Alexander Larsson 2014-10-30 18:51:40 +01:00
parent 5ea3a1028d
commit b519b642bd
1 changed files with 62 additions and 5 deletions
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67
gtk/gtkglarea.c
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@ -119,6 +119,7 @@
typedef struct { typedef struct {
GdkGLContext *context; GdkGLContext *context;
GdkWindow *event_window;
GError *error; GError *error;
gboolean have_buffers; gboolean have_buffers;
@ -245,14 +246,29 @@ static void
gtk_gl_area_realize (GtkWidget *widget) gtk_gl_area_realize (GtkWidget *widget)
{ {
GtkGLAreaPrivate *priv = gtk_gl_area_get_instance_private ((GtkGLArea *) widget); GtkGLAreaPrivate *priv = gtk_gl_area_get_instance_private ((GtkGLArea *) widget);
GdkWindow *window; GtkAllocation allocation;
GdkWindowAttr attributes;
gint attributes_mask;
GTK_WIDGET_CLASS (gtk_gl_area_parent_class)->realize (widget); GTK_WIDGET_CLASS (gtk_gl_area_parent_class)->realize (widget);
window = gtk_widget_get_window (widget); attributes.window_type = GDK_WINDOW_CHILD;
priv->context = gdk_window_create_gl_context (window, attributes.x = allocation.x;
GDK_GL_PROFILE_DEFAULT, attributes.y = allocation.y;
&priv->error); attributes.width = allocation.width;
attributes.height = allocation.height;
attributes.wclass = GDK_INPUT_ONLY;
attributes.event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y;
priv->event_window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gtk_widget_register_window (widget, priv->event_window);
priv->context = gdk_window_create_gl_context (gtk_widget_get_window (widget),
GDK_GL_PROFILE_DEFAULT,
&priv->error);
} }
/* /*
@ -468,9 +484,40 @@ gtk_gl_area_unrealize (GtkWidget *widget)
g_clear_error (&priv->error); g_clear_error (&priv->error);
if (priv->event_window != NULL)
{
gtk_widget_unregister_window (widget, priv->event_window);
gdk_window_destroy (priv->event_window);
priv->event_window = NULL;
}
GTK_WIDGET_CLASS (gtk_gl_area_parent_class)->unrealize (widget); GTK_WIDGET_CLASS (gtk_gl_area_parent_class)->unrealize (widget);
} }
static void
gtk_gl_area_map (GtkWidget *widget)
{
GtkGLArea *area = GTK_GL_AREA (widget);
GtkGLAreaPrivate *priv = gtk_gl_area_get_instance_private (area);
if (priv->event_window != NULL)
gdk_window_show (priv->event_window);
GTK_WIDGET_CLASS (gtk_gl_area_parent_class)->map (widget);
}
static void
gtk_gl_area_unmap (GtkWidget *widget)
{
GtkGLArea *area = GTK_GL_AREA (widget);
GtkGLAreaPrivate *priv = gtk_gl_area_get_instance_private (area);
if (priv->event_window != NULL)
gdk_window_hide (priv->event_window);
GTK_WIDGET_CLASS (gtk_gl_area_parent_class)->unmap (widget);
}
static void static void
gtk_gl_area_size_allocate (GtkWidget *widget, gtk_gl_area_size_allocate (GtkWidget *widget,
GtkAllocation *allocation) GtkAllocation *allocation)
@ -480,6 +527,14 @@ gtk_gl_area_size_allocate (GtkWidget *widget,
GTK_WIDGET_CLASS (gtk_gl_area_parent_class)->size_allocate (widget, allocation); GTK_WIDGET_CLASS (gtk_gl_area_parent_class)->size_allocate (widget, allocation);
if (gtk_widget_get_realized (widget) &&
priv->event_window != NULL)
gdk_window_move_resize (priv->event_window,
allocation->x,
allocation->y,
allocation->width,
allocation->height);
priv->needs_render = TRUE; priv->needs_render = TRUE;
gtk_gl_area_maybe_allocate_buffers (area); gtk_gl_area_maybe_allocate_buffers (area);
} }
@ -573,6 +628,8 @@ gtk_gl_area_class_init (GtkGLAreaClass *klass)
widget_class->realize = gtk_gl_area_realize; widget_class->realize = gtk_gl_area_realize;
widget_class->unrealize = gtk_gl_area_unrealize; widget_class->unrealize = gtk_gl_area_unrealize;
widget_class->map = gtk_gl_area_map;
widget_class->unmap = gtk_gl_area_unmap;
widget_class->size_allocate = gtk_gl_area_size_allocate; widget_class->size_allocate = gtk_gl_area_size_allocate;
widget_class->draw = gtk_gl_area_draw; widget_class->draw = gtk_gl_area_draw;