gtk/gdk/x11/gdkpango-x11.c
2002-11-28 00:33:17 +00:00

90 lines
2.7 KiB
C

/* GDK - The GIMP Drawing Kit
* Copyright (C) 2000 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <stdlib.h>
#include "gdkx.h"
#include "gdkdisplay-x11.h"
#include "gdkpango.h"
#include <pango/pangox.h>
#ifdef HAVE_XFT
#include <pango/pangoxft.h>
#endif
/**
* gdk_pango_context_get_for_screen:
* @screen: the #GdkScreen for which the context is to be created.
*
* Creates a #PangoContext for @screen.
*
* The context must be freed when you're finished with it.
*
* When using GTK+, normally you should use gtk_widget_get_pango_context()
* instead of this function, to get the appropriate context for
* the widget you intend to render text onto.
*
* Return value: a new #PangoContext for @screen
*
* Since: 2.2
**/
PangoContext *
gdk_pango_context_get_for_screen (GdkScreen *screen)
{
PangoContext *context;
GdkDisplayX11 *display_x11;
g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
if (screen->closed)
return NULL;
display_x11 = GDK_DISPLAY_X11 (GDK_SCREEN_DISPLAY (screen));
#ifdef HAVE_XFT
if (display_x11->use_xft == -1)
{
const char *val = g_getenv ("GDK_USE_XFT");
/* Version 2 of Xft supports rendering FreeType fonts via
* the core X protocol, so we default to it everywhere.
*
* For Xft1, we only enable Xft if the user explicitely
* specifies it, and we have the RENDER extension
*/
# ifdef HAVE_XFT2
display_x11->use_xft = !val || (atoi (val) != 0);
# else
display_x11->use_xft = val && (atoi (val) != 0) &&
_gdk_x11_have_render (GDK_SCREEN_DISPLAY (screen));
# endif /* HAVE_XFT2 */
}
if (display_x11->use_xft)
context = pango_xft_get_context (GDK_SCREEN_XDISPLAY (screen),
GDK_SCREEN_X11 (screen)->screen_num);
else
#endif /* HAVE_XFT */
context = pango_x_get_context (GDK_SCREEN_XDISPLAY (screen));
g_object_set_data (G_OBJECT (context), "gdk-pango-screen", screen);
return context;
}