std::unique_ptr<BackingStoreBackendCairo> BackingStore::createBackend()
{
#if PLATFORM(GTK) && PLATFORM(X11)
const auto& sharedDisplay = PlatformDisplay::sharedDisplay();
if (is<PlatformDisplayX11>(sharedDisplay)) {
GdkVisual* visual = gtk_widget_get_visual(m_webPageProxy.viewWidget());
GdkScreen* screen = gdk_visual_get_screen(visual);
ASSERT(downcast<PlatformDisplayX11>(sharedDisplay).native() == GDK_SCREEN_XDISPLAY(screen));
return std::make_unique<BackingStoreBackendCairoX11>(downcast<PlatformDisplayX11>(sharedDisplay).native(), GDK_WINDOW_XID(gdk_screen_get_root_window(screen)),
GDK_VISUAL_XVISUAL(visual), gdk_visual_get_depth(visual), m_size, m_deviceScaleFactor);
}
#endif
IntSize scaledSize = m_size;
scaledSize.scale(m_deviceScaleFactor);
#if PLATFORM(GTK)
RefPtr<cairo_surface_t> surface = adoptRef(gdk_window_create_similar_surface(gtk_widget_get_window(m_webPageProxy.viewWidget()),
CAIRO_CONTENT_COLOR_ALPHA, scaledSize.width(), scaledSize.height()));
#else
RefPtr<cairo_surface_t> surface = adoptRef(cairo_image_surface_create(CAIRO_FORMAT_ARGB32, scaledSize.width(), scaledSize.height()));
#endif
cairoSurfaceSetDeviceScale(surface.get(), m_deviceScaleFactor, m_deviceScaleFactor);
return std::make_unique<BackingStoreBackendCairoImpl>(surface.get(), m_size);
}
/* private at present... */
gboolean
_gdk_x11_gl_overlay_get_info (GdkVisual *visual,
GdkGLOverlayInfo *overlay_info)
{
__SOVPropArray *sov_props;
VisualID xvisualid;
int i;
GDK_GL_NOTE_FUNC_PRIVATE ();
g_return_val_if_fail (GDK_IS_VISUAL (visual), FALSE);
g_return_val_if_fail (overlay_info != NULL, FALSE);
/* Get SOV properties. */
#ifdef GDKGLEXT_MULTIHEAD_SUPPORT
sov_props = gdk_gl_overlay_get_sov_props (gdk_visual_get_screen (visual));
#else /* GDKGLEXT_MULTIHEAD_SUPPORT */
sov_props = gdk_gl_overlay_get_sov_props (NULL);
#endif /* GDKGLEXT_MULTIHEAD_SUPPORT */
/* Look up SOV property for the visual. */
xvisualid = GDK_VISUAL_XVISUAL (visual)->visualid;
for (i = 0; i < sov_props->num; i++)
{
if ((VisualID) (sov_props->prop[i].overlay_visual) == xvisualid)
{
overlay_info->visual = visual;
overlay_info->transparent_type = sov_props->prop[i].transparent_type;
overlay_info->value = sov_props->prop[i].value;
overlay_info->layer = sov_props->prop[i].layer;
GDK_GL_NOTE (MISC, g_message (" -- overlay visual"));
GDK_GL_NOTE (MISC, g_print ("transparent_type = %d\n",
overlay_info->transparent_type));
GDK_GL_NOTE (MISC, g_print ("value = %u\n",
overlay_info->value));
GDK_GL_NOTE (MISC, g_print ("layer = %d\n",
overlay_info->layer));
return TRUE;
}
}
/* meaningless */
overlay_info->visual = visual;
overlay_info->transparent_type = GDK_GL_OVERLAY_TRANSPARENT_NONE;
overlay_info->value = 0;
overlay_info->layer = 0;
GDK_GL_NOTE (MISC, g_message (" -- not overlay visual"));
return FALSE;
}
WidgetBackingStoreGtkX11::WidgetBackingStoreGtkX11(GtkWidget* widget, const IntSize& size)
: WidgetBackingStore(size)
{
GdkVisual* visual = gtk_widget_get_visual(widget);
GdkScreen* screen = gdk_visual_get_screen(visual);
m_display = GDK_SCREEN_XDISPLAY(screen);
m_pixmap = XCreatePixmap(m_display, GDK_WINDOW_XID(gdk_screen_get_root_window(screen)),
size.width(), size.height(), gdk_visual_get_depth(visual));
m_gc = XCreateGC(m_display, m_pixmap, 0, 0);
m_surface = adoptRef(cairo_xlib_surface_create(m_display, m_pixmap,
GDK_VISUAL_XVISUAL(visual), size.width(), size.height()));
}
static VALUE
rg_screen(VALUE self)
{
return GOBJ2RVAL(gdk_visual_get_screen(_SELF(self)));
}
