 TUPLE: gtk-clipboard handle ;
 
 C: <gtk-clipboard> gtk-clipboard
+
+PIXEL-FORMAT-ATTRIBUTE-TABLE: gl-config-attribs { $[ GDK_GL_USE_GL enum>number GDK_GL_RGBA enum>number ] } H{
+    { double-buffered { $[ GDK_GL_DOUBLEBUFFER enum>number ] } }
+    { stereo { $[ GDK_GL_STEREO enum>number ] } }
+    ! { offscreen { $[ GDK_GL_DRAWABLE_TYPE enum>number ] 2 } }
+    ! { fullscreen { $[ GDK_GL_DRAWABLE_TYPE enum>number ] 1 } }
+    ! { windowed { $[ GDK_GL_DRAWABLE_TYPE enum>number ] 1 } }
+    { color-bits { $[ GDK_GL_BUFFER_SIZE enum>number ] } }
+    { red-bits { $[ GDK_GL_RED_SIZE enum>number ] } }
+    { green-bits { $[ GDK_GL_GREEN_SIZE enum>number ] } }
+    { blue-bits { $[ GDK_GL_BLUE_SIZE enum>number ] } }
+    { alpha-bits { $[ GDK_GL_ALPHA_SIZE enum>number ] } }
+    { accum-red-bits { $[ GDK_GL_ACCUM_RED_SIZE enum>number ] } }
+    { accum-green-bits { $[ GDK_GL_ACCUM_GREEN_SIZE enum>number ] } }
+    { accum-blue-bits { $[ GDK_GL_ACCUM_BLUE_SIZE enum>number ] } }
+    { accum-alpha-bits { $[ GDK_GL_ACCUM_ALPHA_SIZE enum>number ] } }
+    { depth-bits { $[ GDK_GL_DEPTH_SIZE enum>number ] } }
+    { stencil-bits { $[ GDK_GL_STENCIL_SIZE enum>number ] } }
+    { aux-buffers { $[ GDK_GL_AUX_BUFFERS enum>number ] } }
+    { sample-buffers { $[ GDK_GL_SAMPLE_BUFFERS enum>number ] } }
+    { samples { $[ GDK_GL_SAMPLES enum>number ] } }
+}
+
+M: gtk-ui-backend (make-pixel-format)
+    nip >gl-config-attribs-int-array gdk_gl_config_new ;
+
+M: gtk-ui-backend (free-pixel-format)
+    handle>> g_object_unref ;
+
+M: gtk-ui-backend (pixel-format-attribute)
+    [ handle>> ] [ >gl-config-attribs ] bi*
+    { int } [ gdk_gl_config_get_attrib drop ] [ ]
+    with-out-parameters ;
 
 CONSTANT: events-mask
     {

! Copyright (C) 2010 Anton Gorenko.
! See http://factorcode.org/license.txt for BSD license.
USING: accessors alien.c-types alien.enums alien.strings arrays
ascii assocs classes.struct combinators.short-circuit
command-line destructors io.backend.unix.multiplexers
io.encodings.utf8 io.thread kernel libc literals locals math
math.bitwise namespaces sequences strings threads ui ui.backend
ui.clipboards ui.event-loop ui.gadgets ui.gadgets.private
ui.gadgets.worlds ui.gestures ui.private
glib.ffi gobject.ffi gtk.ffi gdk.ffi gdk.gl.ffi gtk.gl.ffi ;
IN: ui.backend.gtk


    win "delete-event" [ on-delete ]
    GtkWidget:delete-event connect-signal ;

CONSTANT: window-controls>decor-flags
    H{
        { close-button 0 }
