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d12c9702a4
Thu Jan 3 22:18:15 2002 Owen Taylor <otaylor@redhat.com>
* gdk/x11/gdkdrawable-x11.c gdk/x11/gdkprivate-x11.h
(_gdk_x11_have_render): Private function to tell if we have RENDER
extension.
* gdk/x11/gdkgc-x11.c (_gdk_x11_gc_get_fg_picture): Return
None if we don't have RENDER extension.
* gdk/x11/gdkpango-x11.c (gdk_pango_context_get): Don't
use Xft unless we have render extension.
* gdk/x11/gdkdrawable-x11.c (gdk_x11_drawable_get_picture):
Handle missing render extension.
* gdk/gdkdraw.c gdk/gdkdrawable.h gdk/gdkpixmap.c gdk/gdkwindow.c
gdk/gdkinternals.h: Add a private copy_to_image() virtual function
to the GdkDrawable vtable that extends get_image() to allow
copying onto existing images. Make the default implementation of
get_image() use this so that backends don't have to implement
both. Add private wrapper _gdk_drawable_copy_to_image().
* gdk/x11/gdkimage-x11.c gdk/x11/gdkprivate-x11.c
gdk/x11/gdkdrawable-x11.c (_gdk_x11_copy_to_image): Implement
copy_to_image() semantics, speed up by using ShmPixmaps and
XCopyArea when possible, XFlush() after ungrabbing the server,
generally redo the logic once again.
* gdk/gdkinternals.h gdk/x11/gdkimage-x11.c
_gdk_windowing_bits_per_depth(): Function to convert from depth to
bits-per-pixel. (We assume only one bpp per depth - X requires
this.)
* gdk/gdkinternals.h gdk/gdkrgb.c gdk/gdkimage.c: Move the GdkRGB
scratch image code into a generic _gdk_image_get_scratch() chunk
of code that we can use other places we need scratch images.
* gdk/gdkimage.c gdk/x11/gdkimage.c gdk/gdkinternals.h:
Add _gdk_image_new_for_depth() as the backend
to _gdk_image_new() to allowing creating images with
a depth and no visual.
* gdk/gdkpixbuf-drawable.c: Fix so that getting
parts of images not at 0,0 actually works.
* gdk/gdkdrawable.h gdk/gdkinternals.h gdk/gdkdraw.c
gdk/gdkwindow.c gdk/gdkpixmap.c gdk/gdkpixbuf-render.c:
- Add a new GdkDrawableClass vfunc _draw_pixbuf, and
_gdk_draw_pixbuf() [ will be made public later ], to allow
backends to accelerate drawing pixbufs.
- Move the implementation of gdk_pixbuf_render_to_drawable_alpha()
to be the default implementation.
- Update docs for gdk_pixbuf_render_to_drawable_alpha().
- Optimize the default implementation by using
_gdk_image_copy_to_pixmap() and scratch shared images, and
special casing the compositing.
* gdk/x11/gdkdrawable-x11.c: Accelerate _gdk_draw_pixbuf()
with alpha using the RENDER extension.
* gdk/gdkpixbuf-drawable.c (gdk_pixbuf_get_from_drawable):
Optimize by _gdk_image_copy_to_pixmap() and scratch images.
* tests/testrgb.c: Add test for speed of alpha composition,
reduce the number of iterations since alpha composition
can be a bit slow.
* gdk/x11/gdkimage-x11.c gdk/gdkprivate-x11.h (_gdk_x11_image_get_shm_pixmap):
Private function to get a ShmPixmap for an image, if possible.
61 lines
1.8 KiB
C
61 lines
1.8 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 2000 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <config.h>
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#include <stdlib.h>
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#include "gdkprivate-x11.h"
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#include "gdkpango.h"
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#include <pango/pangox.h>
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#ifdef HAVE_XFT
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#include <pango/pangoxft.h>
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#endif
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/**
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* gdk_pango_context_get:
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*
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* Creates a #PangoContext for the default GDK display.
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*
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* The context must be freed when you're finished with it.
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*
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* When using GTK+, normally you should use gtk_widget_get_pango_context()
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* instead of this function, to get the appropriate context for
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* the widget you intend to render text onto.
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*
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* Return value: a new #PangoContext for the default display
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**/
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PangoContext *
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gdk_pango_context_get (void)
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{
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#ifdef HAVE_XFT
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static gint use_xft = -1;
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if (use_xft == -1)
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{
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const char *val = g_getenv ("GDK_USE_XFT");
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use_xft = val && (atoi (val) != 0) && _gdk_x11_have_render ();
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}
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if (use_xft)
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return pango_xft_get_context (GDK_DISPLAY (), DefaultScreen (GDK_DISPLAY ()));
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else
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#endif /* HAVE_XFT */
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return pango_x_get_context (GDK_DISPLAY ());
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}
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