Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegraphics@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 1137 insertions, 0 deletions

diff --git a/ksvg/impl/libs/xrgbrender/gdk-pixbuf-xlib-drawable.c b/ksvg/impl/libs/xrgbrender/gdk-pixbuf-xlib-drawable.c
new file mode 100644
index 00000000..01f60976
--- /dev/null
+++ b/ksvg/impl/libs/xrgbrender/gdk-pixbuf-xlib-drawable.c
@@ -0,0 +1,1137 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/* GdkPixbuf library - convert X drawable information to RGB
+ *
+ * Copyright (C) 1999 Michael Zucchi
+ *
+ * Authors: Michael Zucchi <zucchi@zedzone.mmc.com.au>
+ *          Cody Russell <bratsche@dfw.net>
+ * 	    Federico Mena-Quintero <federico@gimp.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+/* Ported to Xlib by John Harper <john@dcs.warwick.ac.uk> */
+
+
+#include <config.h>
+#include <stdio.h>
+#include <string.h>
+#include "gdk-pixbuf-xlib-private.h"
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+
+#if (X_BYTE_ORDER == X_LITTLE_ENDIAN)
+#define LITTLE
+#endif
+#define d(x)
+
+
+
+static unsigned int mask_table[] = {
+	0x00000000, 0x00000001, 0x00000003, 0x00000007,
+	0x0000000f, 0x0000001f, 0x0000003f, 0x0000007f,
+	0x000000ff, 0x000001ff, 0x000003ff, 0x000007ff,
+	0x00000fff, 0x00001fff, 0x00003fff, 0x00007fff,
+	0x0000ffff, 0x0001ffff, 0x0003ffff, 0x0007ffff,
+	0x000fffff, 0x001fffff, 0x003fffff, 0x007fffff,
+	0x00ffffff, 0x01ffffff, 0x03ffffff, 0x07ffffff,
+	0x0fffffff, 0x1fffffff, 0x3fffffff, 0x7fffffff,
+	0xffffffff
+};
+
+
+/* color handling */
+
+typedef struct xlib_colormap_struct xlib_colormap;
+struct xlib_colormap_struct {
+	int size;
+	XColor *colors;
+	Visual *visual;
+	Colormap colormap;
+};
+
+
+/* from gdkvisual.c */
+static void
+visual_decompose_mask (unsigned long  mask,
+		       int   *shift,
+		       int   *prec)
+{
+	*shift = 0;
+	*prec = 0;
+
+	while (!(mask & 0x1)) {
+		(*shift)++;
+		mask >>= 1;
+	}
+
+	while (mask & 0x1) {
+		(*prec)++;
+		mask >>= 1;
+	}
+}
+
+static int x_error;
+
+static int
+handle_x_error (Display *dpy, XErrorEvent *ev)
+{
+	x_error = 1;
+	return 0;
+}
+
+static int
+drawable_is_pixmap (Drawable d)
+{
+	/* copied from Imlib */
+
+	XErrorHandler errh;
+	XWindowAttributes wa;
+	int is_pixmap;
+
+	errh = XSetErrorHandler (handle_x_error);
+	x_error = 0;
+	XGetWindowAttributes (gdk_pixbuf_dpy, d, &wa);
+	XSync (gdk_pixbuf_dpy, False);
+	is_pixmap = x_error;
+	XSetErrorHandler (errh);
+
+	return is_pixmap;
+}
+
+
+
+/*
+  convert 1 bits-pixel data
+  no alpha
+*/
+static void
+rgb1 (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap)
+{
+	int xx, yy;
+	int width, height;
+	int bpl;
+	unsigned char *s;
+	register unsigned char data;
+	unsigned char *o;
+	unsigned char *srow = image->data, *orow = pixels;
+
+	d (printf ("1 bits/pixel\n"));
+
+	/* convert upto 8 pixels/time */
+	/* its probably not worth trying to make this run very fast, who uses
+	   1 bit displays anymore? */
+	width = image->width;
+	height = image->height;
+	bpl = image->bytes_per_line;
+
+	for (yy = 0; yy < height; yy++) {
+		s = srow;
+		o = orow;
+
+		for (xx = 0; xx < width; xx ++) {
+			data = srow[xx >> 3] >> (7 - (xx & 7)) & 1;
+			*o++ = colormap->colors[data].red;
+			*o++ = colormap->colors[data].green;
+			*o++ = colormap->colors[data].blue;
+		}
+		srow += bpl;
+		orow += rowstride;
+	}
+}
+
+/*
+  convert 1 bits/pixel data
+  with alpha
+*/
+static void
+rgb1a (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap)
+{
+	int xx, yy;
+	int width, height;
+	int bpl;
+	unsigned char *s;
+	register unsigned char data;
+	unsigned char *o;
+	unsigned char *srow = image->data, *orow = pixels;
+	unsigned int remap[2];
+
+	d (printf ("1 bits/pixel\n"));
+
+	/* convert upto 8 pixels/time */
+	/* its probably not worth trying to make this run very fast, who uses
+	   1 bit displays anymore? */
+	width = image->width;
+	height = image->height;
+	bpl = image->bytes_per_line;
+
+	for (xx = 0; xx < 2; xx++) {
+#ifdef LITTLE
+		remap[xx] = 0xff000000
+			| colormap->colors[xx].blue << 16
+			| colormap->colors[xx].green << 8
+			| colormap->colors[xx].red;
+#else
+		remap[xx] = 0xff
+			| colormap->colors[xx].red << 24
+			| colormap->colors[xx].green << 16
+			| colormap->colors[xx].blue << 8;
+#endif
+	}
+
+	for (yy = 0; yy < height; yy++) {
+		s = srow;
+		o = orow;
+
+		for (xx = 0; xx < width; xx ++) {
+			data = srow[xx >> 3] >> (7 - (xx & 7)) & 1;
+			*o++ = remap[data];
+		}
+		srow += bpl;
+		orow += rowstride;
+	}
+}
+
+/*
+  convert 8 bits/pixel data
+  no alpha
+*/
+static void
+rgb8 (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap)
+{
+	int xx, yy;
+	int width, height;
+	int bpl;
+	unsigned int mask;
+	register unsigned int data;
+	unsigned char *srow = image->data, *orow = pixels;
+	register unsigned char *s;
+	register unsigned char *o;
+
+	width = image->width;
+	height = image->height;
+	bpl = image->bytes_per_line;
+
+	d (printf ("8 bit, no alpha output\n"));
+
+	mask = mask_table[image->depth];
+
+	for (yy = 0; yy < height; yy++) {
+		s = srow;
+		o = orow;
+		for (xx = 0; xx < width; xx++) {
+			data = *s++ & mask;
+			*o++ = colormap->colors[data].red;
+			*o++ = colormap->colors[data].green;
+			*o++ = colormap->colors[data].blue;
+		}
+		srow += bpl;
+		orow += rowstride;
+	}
+}
+
+/*
+  convert 8 bits/pixel data
+  with alpha
+*/
+static void
+rgb8a (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap)
+{
+	int xx, yy;
+	int width, height;
+	int bpl;
+	unsigned int mask;
+	register unsigned int data;
+	unsigned int remap[256];
+	register unsigned char *s;	/* read 2 pixels at once */
+	register unsigned int *o;
+	unsigned char *srow = image->data, *orow = pixels;
+
+	width = image->width;
+	height = image->height;
+	bpl = image->bytes_per_line;
+
+	d (printf ("8 bit, with alpha output\n"));
+
+	mask = mask_table[image->depth];
+
+	for (xx = 0; xx < colormap->size; xx++) {
+#ifdef LITTLE
+		remap[xx] = 0xff000000
+			| colormap->colors[xx].blue << 16
+			| colormap->colors[xx].green << 8
+			| colormap->colors[xx].red;
+#else
+		remap[xx] = 0xff
+			| colormap->colors[xx].red << 24
+			| colormap->colors[xx].green << 16
+			| colormap->colors[xx].blue << 8;
+#endif
+	}
+
+	for (yy = 0; yy < height; yy++) {
+		s = srow;
+		o = (unsigned int *) orow;
+		for (xx = 0; xx < width; xx ++) {
+			data = *s++ & mask;
+			*o++ = remap[data];
+		}
+		srow += bpl;
+		orow += rowstride;
+	}
+}
+
+/*
+  convert 16 bits/pixel data
+  no alpha
+  data in lsb format
+*/
+static void
+rgb565lsb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap)
+{
+	int xx, yy;
+	int width, height;
+	int bpl;
+
+#ifdef LITTLE
+	register unsigned int *s;	/* read 2 pixels at once */
+#else
+	register unsigned char *s;	/* read 2 pixels at once */
+#endif
+	register unsigned short *o;
+	unsigned char *srow = image->data, *orow = pixels;
+
+	width = image->width;
+	height = image->height;
+	bpl = image->bytes_per_line;
+
+	for (yy = 0; yy < height; yy++) {
+#ifdef LITTLE
+		s = (unsigned int *) srow;
+#else
+		s = srow;
+#endif
+		o = (unsigned short *) orow;
+		for (xx = 1; xx < width; xx += 2) {
+			register unsigned int data;
+#ifdef LITTLE
+			data = *s++;
+			*o++ = (data & 0xf800) >> 8 | (data & 0xe000) >> 13
+				| (data & 0x7e0) << 5 | (data & 0x600) >> 1;
+			*o++ = (data & 0x1f) << 3 | (data & 0x1c) >> 2
+				| (data & 0xf8000000) >> 16 | (data & 0xe0000000) >> 21;
+			*o++ = (data & 0x7e00000) >> 19 | (data & 0x6000000) >> 25
+				| (data & 0x1f0000) >> 5 | (data & 0x1c0000) >> 10;
+#else
+			/* swap endianness first */
+			data = s[0] | s[1] << 8 | s[2] << 16 | s[3] << 24;
+			s += 4;
+			*o++ = (data & 0xf800) | (data & 0xe000) >> 5
+				| (data & 0x7e0) >> 3 | (data & 0x600) >> 9;
+			*o++ = (data & 0x1f) << 11 | (data & 0x1c) << 6
+				| (data & 0xf8000000) >> 24 | (data & 0xe0000000) >> 29;
+			*o++ = (data & 0x7e00000) >> 11 | (data & 0x6000000) >> 17
+				| (data & 0x1f0000) >> 13 | (data & 0x1c0000) >> 18;
+#endif
+		}
+		/* check for last remaining pixel */
+		if (width & 1) {
+			register unsigned short data;
+#ifdef LITTLE
+			data = *((short *) s);
+#else
+			data = *((short *) s);
+			data = ((data >> 8) & 0xff) | ((data & 0xff) << 8);
+#endif
+			((char *) o)[0] = ((data >> 8) & 0xf8) | ((data >> 13) & 0x7);
+			((char *) o)[1] = ((data >> 3) & 0xfc) | ((data >> 9) & 0x3);
+			((char *) o)[2] = ((data << 3) & 0xf8) | ((data >> 2) & 0x7);
+		}
+		srow += bpl;
+		orow += rowstride;
+	}
+}
+
+/*
+  convert 16 bits/pixel data
+  no alpha
+  data in msb format
+*/
+static void
+rgb565msb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap)
+{
+	int xx, yy;
+	int width, height;
+	int bpl;
+
+#ifdef LITTLE
+	register unsigned char *s;	/* need to swap data order */
+#else
+	register unsigned int *s;	/* read 2 pixels at once */
+#endif
+	register unsigned short *o;
+	unsigned char *srow = image->data, *orow = pixels;
+
+	width = image->width;
+	height = image->height;
+	bpl = image->bytes_per_line;
+
+	for (yy = 0; yy < height; yy++) {
+#ifdef LITTLE
+		s = srow;
+#else
+		s = (unsigned int *) srow;
+#endif
+		o = (unsigned short *) orow;
+		for (xx = 1; xx < width; xx += 2) {
+			register unsigned int data;
+#ifdef LITTLE
+			/* swap endianness first */
+			data = s[0] | s[1] << 8 | s[2] << 16 | s[3] << 24;
+			s += 4;
+			*o++ = (data & 0xf800) >> 8 | (data & 0xe000) >> 13
+				| (data & 0x7e0) << 5 | (data & 0x600) >> 1;
+			*o++ = (data & 0x1f) << 3 | (data & 0x1c) >> 2
+				| (data & 0xf8000000) >> 16 | (data & 0xe0000000) >> 21;
+			*o++ = (data & 0x7e00000) >> 19 | (data & 0x6000000) >> 25
+				| (data & 0x1f0000) >> 5 | (data & 0x1c0000) >> 10;
+#else
+			data = *s++;
+			*o++ = (data & 0xf800) | (data & 0xe000) >> 5
+				| (data & 0x7e0) >> 3 | (data & 0x600) >> 9;
+			*o++ = (data & 0x1f) << 11 | (data & 0x1c) << 6
+				| (data & 0xf8000000) >> 24 | (data & 0xe0000000) >> 29;
+			*o++ = (data & 0x7e00000) >> 11 | (data & 0x6000000) >> 17
+				| (data & 0x1f0000) >> 13 | (data & 0x1c0000) >> 18;
+#endif
+		}
+		/* check for last remaining pixel */
+		if (width & 1) {
+			register unsigned short data;
+#ifdef LITTLE
+			data = *((short *) s);
+			data = ((data >> 8) & 0xff) | ((data & 0xff) << 8);
+#else
+			data = *((short *) s);
+#endif
+			((char *) o)[0] = ((data >> 8) & 0xf8) | ((data >> 13) & 0x7);
+			((char *) o)[1] = ((data >> 3) & 0xfc) | ((data >> 9) & 0x3);
+			((char *) o)[2] = ((data << 3) & 0xf8) | ((data >> 2) & 0x7);
+		}
+		srow += bpl;
+		orow += rowstride;
+	}
+}
+
+/*
+  convert 16 bits/pixel data
+  with alpha
+  data in lsb format
+*/
+static void
+rgb565alsb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap)
+{
+	int xx, yy;
+	int width, height;
+	int bpl;
+
+#ifdef LITTLE
+	register unsigned short *s;	/* read 1 pixels at once */
+#else
+	register unsigned char *s;
+#endif
+	register unsigned int *o;
+
+	unsigned char *srow = image->data, *orow = pixels;
+
+	width = image->width;
+	height = image->height;
+	bpl = image->bytes_per_line;
+
+	for (yy = 0; yy < height; yy++) {
+#ifdef LITTLE
+		s = (unsigned short *) srow;
+#else
+		s = (unsigned char *) srow;
+#endif
+		o = (unsigned int *) orow;
+		for (xx = 0; xx < width; xx ++) {
+			register unsigned int data;
+			/*  rrrrrggg gggbbbbb -> rrrrrRRR ggggggGG bbbbbBBB aaaaaaaa */
+			/*  little endian: aaaaaaaa bbbbbBBB ggggggGG rrrrrRRR */
+#ifdef LITTLE
+			data = *s++;
+			*o++ = (data & 0xf800) >> 8 | (data & 0xe000) >> 13
+				| (data & 0x7e0) << 5 | (data & 0x600) >> 1
+				| (data & 0x1f) << 19 | (data & 0x1c) << 14
+				| 0xff000000;
+#else
+			/* swap endianness first */
+			data = s[0] | s[1] << 8;
+			s += 2;
+			*o++ = (data & 0xf800) << 16 | (data & 0xe000) << 11
+				| (data & 0x7e0) << 13 | (data & 0x600) << 7
+				| (data & 0x1f) << 11 | (data & 0x1c) << 6
+				| 0xff;
+#endif
+		}
+		srow += bpl;
+		orow += rowstride;
+	}
+}
+
+/*
+  convert 16 bits/pixel data
+  with alpha
+  data in msb format
+*/
+static void
+rgb565amsb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap)
+{
+	int xx, yy;
+	int width, height;
+	int bpl;
+
+#ifdef LITTLE
+	register unsigned char *s;
+#else
+	register unsigned short *s;	/* read 1 pixels at once */
+#endif
+	register unsigned int *o;
+
+	unsigned char *srow = image->data, *orow = pixels;
+
+	width = image->width;
+	height = image->height;
+	bpl = image->bytes_per_line;
+
+	for (yy = 0; yy < height; yy++) {
+		s = srow;
+		o = (unsigned int *) orow;
+		for (xx = 0; xx < width; xx ++) {
+			register unsigned int data;
+			/*  rrrrrggg gggbbbbb -> rrrrrRRR gggggg00 bbbbbBBB aaaaaaaa */
+			/*  little endian: aaaaaaaa bbbbbBBB gggggg00 rrrrrRRR */
+#ifdef LITTLE
+			/* swap endianness first */
+			data = s[0] | s[1] << 8;
+			s += 2;
+			*o++ = (data & 0xf800) >> 8 | (data & 0xe000) >> 13
+				| (data & 0x7e0) << 5 | (data & 0x600) >> 1
+				| (data & 0x1f) << 19 | (data & 0x1c) << 14
+				| 0xff000000;
+#else
+			data = *s++;
+			*o++ = (data & 0xf800) << 16 | (data & 0xe000) << 11
+				| (data & 0x7e0) << 13 | (data & 0x600) << 7
+				| (data & 0x1f) << 11 | (data & 0x1c) << 6
+				| 0xff;
+#endif
+		}
+		srow += bpl;
+		orow += rowstride;
+	}
+}
+
+/*
+  convert 15 bits/pixel data
+  no alpha
+  data in lsb format
+*/
+static void
+rgb555lsb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap)
+{
+	int xx, yy;
+	int width, height;
+	int bpl;
+
+#ifdef LITTLE
+	register unsigned int *s;	/* read 2 pixels at once */
+#else
+	register unsigned char *s;	/* read 2 pixels at once */
+#endif
+	register unsigned short *o;
+	unsigned char *srow = image->data, *orow = pixels;
+
+	width = image->width;
+	height = image->height;
+	bpl = image->bytes_per_line;
+
+	for (yy = 0; yy < height; yy++) {
+#ifdef LITTLE
+		s = (unsigned int *) srow;
+#else
+		s = srow;
+#endif
+		o = (unsigned short *) orow;
+		for (xx = 1; xx < width; xx += 2) {
+			register unsigned int data;
+#ifdef LITTLE
+			data = *s++;
+			*o++ = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12
+				| (data & 0x3e0) << 6 | (data & 0x380) << 1;
+			*o++ = (data & 0x1f) << 3 | (data & 0x1c) >> 2
+				| (data & 0x7c000000) >> 15 | (data & 0x70000000) >> 20;
+			*o++ = (data & 0x3e00000) >> 18 | (data & 0x3800000) >> 23
+				| (data & 0x1f0000) >> 5 | (data & 0x1c0000) >> 10;
+#else
+			/* swap endianness first */
+			data = s[0] | s[1] << 8 | s[2] << 16 | s[3] << 24;
+			s += 4;
+			*o++ = (data & 0x7c00) << 1 | (data & 0x7000) >> 4
+				| (data & 0x3e0) >> 2 | (data & 0x380) >> 7;
+			*o++ = (data & 0x1f) << 11 | (data & 0x1c) << 6
+				| (data & 0x7c000000) >> 23 | (data & 0x70000000) >> 28;
+			*o++ = (data & 0x3e00000) >> 10 | (data & 0x3800000) >> 15
+				| (data & 0x1f0000) >> 13 | (data & 0x1c0000) >> 18;
+#endif
+		}
+		/* check for last remaining pixel */
+		if (width & 1) {
+			register unsigned short data;
+#ifdef LITTLE
+			data = *((short *) s);
+#else
+			data = *((short *) s);
+			data = ((data >> 8) & 0xff) | ((data & 0xff) << 8);
+#endif
+			((char *) o)[0] = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12;
+			((char *) o)[1] = (data & 0x3e0) >> 2 | (data & 0x380) >> 7;
+			((char *) o)[2] = (data & 0x1f) << 3 | (data & 0x1c) >> 2;
+		}
+		srow += bpl;
+		orow += rowstride;
+	}
+}
+
+/*
+  convert 15 bits/pixel data
+  no alpha
+  data in msb format
+*/
+static void
+rgb555msb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap)
+{
+	int xx, yy;
+	int width, height;
+	int bpl;
+
+#ifdef LITTLE
+	register unsigned char *s;	/* read 2 pixels at once */
+#else
+	register unsigned int *s;	/* read 2 pixels at once */
+#endif
+	register unsigned short *o;
+	unsigned char *srow = image->data, *orow = pixels;
+
+	width = image->width;
+	height = image->height;
+	bpl = image->bytes_per_line;
+
+	for (yy = 0; yy < height; yy++) {
+		s = srow;
+		o = (unsigned short *) orow;
+		for (xx = 1; xx < width; xx += 2) {
+			register unsigned int data;
+#ifdef LITTLE
+			/* swap endianness first */
+			data = s[0] | s[1] << 8 | s[2] << 16 | s[3] << 24;
+			s += 4;
+			*o++ = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12
+				| (data & 0x3e0) << 6 | (data & 0x380) << 1;
+			*o++ = (data & 0x1f) << 3 | (data & 0x1c) >> 2
+				| (data & 0x7c000000) >> 15 | (data & 0x70000000) >> 20;
+			*o++ = (data & 0x3e00000) >> 18 | (data & 0x3800000) >> 23
+				| (data & 0x1f0000) >> 5 | (data & 0x1c0000) >> 10;
+#else
+			data = *s++;
+			*o++ = (data & 0x7c00) << 1 | (data & 0x7000) >> 4
+				| (data & 0x3e0) >> 2 | (data & 0x380) >> 7;
+			*o++ = (data & 0x1f) << 11 | (data & 0x1c) << 6
+				| (data & 0x7c000000) >> 23 | (data & 0x70000000) >> 28;
+			*o++ = (data & 0x3e00000) >> 10 | (data & 0x3800000) >> 15
+				| (data & 0x1f0000) >> 13 | (data & 0x1c0000) >> 18;
+#endif
+		}
+		/* check for last remaining pixel */
+		if (width & 1) {
+			register unsigned short data;
+#ifdef LITTLE
+			data = *((short *) s);
+			data = ((data >> 8) & 0xff) | ((data & 0xff) << 8);
+#else
+			data = *((short *) s);
+#endif
+			((char *) o)[0] = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12;
+			((char *) o)[1] = (data & 0x3e0) >> 2 | (data & 0x380) >> 7;
+			((char *) o)[2] = (data & 0x1f) << 3 | (data & 0x1c) >> 2;
+		}
+		srow += bpl;
+		orow += rowstride;
+	}
+}
+
+/*
+  convert 15 bits/pixel data
+  with alpha
+  data in lsb format
+*/
+static void
+rgb555alsb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap)
+{
+	int xx, yy;
+	int width, height;
+	int bpl;
+
+#ifdef LITTLE
+	register unsigned short *s;	/* read 1 pixels at once */
+#else
+	register unsigned char *s;
+#endif
+	register unsigned int *o;
+
+	unsigned char *srow = image->data, *orow = pixels;
+
+	width = image->width;
+	height = image->height;
+	bpl = image->bytes_per_line;
+
+	for (yy = 0; yy < height; yy++) {
+#ifdef LITTLE
+		s = (unsigned short *) srow;
+#else
+		s = srow;
+#endif
+		o = (unsigned int *) orow;
+		for (xx = 0; xx < width; xx++) {
+			register unsigned int data;
+			/*  rrrrrggg gggbbbbb -> rrrrrRRR gggggGGG bbbbbBBB aaaaaaaa */
+			/*  little endian: aaaaaaaa bbbbbBBB gggggGGG rrrrrRRR */
+#ifdef LITTLE
+			data = *s++;
+			*o++ = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12
+				| (data & 0x3e0) << 6 | (data & 0x380) << 1
+				| (data & 0x1f) << 19 | (data & 0x1c) << 14
+				| 0xff000000;
+#else
+			/* swap endianness first */
+			data = s[0] | s[1] << 8;
+			s += 2;
+			*o++ = (data & 0x7c00) << 17 | (data & 0x7000) << 12
+				| (data & 0x3e0) << 14 | (data & 0x380) << 9
+				| (data & 0x1f) << 11 | (data & 0x1c) << 6
+				| 0xff;
+#endif
+		}
+		srow += bpl;
+		orow += rowstride;
+	}
+}
+
+/*
+  convert 15 bits/pixel data
+  with alpha
+  data in msb format
+*/
+static void
+rgb555amsb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap)
+{
+	int xx, yy;
+	int width, height;
+	int bpl;
+
+#ifdef LITTLE
+	register unsigned short *s;	/* read 1 pixels at once */
+#else
+	register unsigned char *s;
+#endif
+	register unsigned int *o;
+
+	unsigned char *srow = image->data, *orow = pixels;
+
+	width = image->width;
+	height = image->height;
+	bpl = image->bytes_per_line;
+
+	for (yy = 0; yy < height; yy++) {
+#ifdef LITTLE
+		s = (unsigned short *) srow;
+#else
+		s = srow;
+#endif
+		o = (unsigned int *) orow;
+		for (xx = 0; xx < width; xx++) {
+			register unsigned int data;
+			/*  rrrrrggg gggbbbbb -> rrrrrRRR gggggGGG bbbbbBBB aaaaaaaa */
+			/*  little endian: aaaaaaaa bbbbbBBB gggggGGG rrrrrRRR */
+#ifdef LITTLE
+			/* swap endianness first */
+			data = s[0] | s[1] << 8;
+			s += 2;
+			*o++ = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12
+				| (data & 0x3e0) << 6 | (data & 0x380) << 1
+				| (data & 0x1f) << 19 | (data & 0x1c) << 14
+				| 0xff000000;
+#else
+			data = *s++;
+			*o++ = (data & 0x7c00) << 17 | (data & 0x7000) << 12
+				| (data & 0x3e0) << 14 | (data & 0x380) << 9
+				| (data & 0x1f) << 11 | (data & 0x1c) << 6
+				| 0xff;
+#endif
+		}
+		srow += bpl;
+		orow += rowstride;
+	}
+}
+
+
+static void
+rgb888alsb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap)
+{
+	int xx, yy;
+	int width, height;
+	int bpl;
+
+	unsigned char *s;	/* for byte order swapping */
+	unsigned char *o;
+	unsigned char *srow = image->data, *orow = pixels;
+
+	width = image->width;
+	height = image->height;
+	bpl = image->bytes_per_line;
+
+	d (printf ("32 bits/pixel with alpha\n"));
+
+	/* lsb data */
+	for (yy = 0; yy < height; yy++) {
+		s = srow;
+		o = orow;
+		for (xx = 0; xx < width; xx++) {
+			*o++ = s[2];
+			*o++ = s[1];
+			*o++ = s[0];
+			*o++ = 0xff;
+			s += 4;
+		}
+		srow += bpl;
+		orow += rowstride;
+	}
+}
+
+static void
+rgb888lsb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap)
+{
+	int xx, yy;
+	int width, height;
+	int bpl;
+
+	unsigned char *srow = image->data, *orow = pixels;
+	unsigned char *o, *s;
+
+	width = image->width;
+	height = image->height;
+	bpl = image->bytes_per_line;
+
+	d (printf ("32 bit, lsb, no alpha\n"));
+
+	for (yy = 0; yy < height; yy++) {
+		s = srow;
+		o = orow;
+		for (xx = 0; xx < width; xx++) {
+			*o++ = s[2];
+			*o++ = s[1];
+			*o++ = s[0];
+			s += 4;
+		}
+		srow += bpl;
+		orow += rowstride;
+	}
+}
+
+static void
+rgb888amsb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap)
+{
+	int xx, yy;
+	int width, height;
+	int bpl;
+
+	unsigned char *srow = image->data, *orow = pixels;
+#ifdef LITTLE
+	unsigned int *o;
+	unsigned int *s;
+#else
+	unsigned char *s;	/* for byte order swapping */
+	unsigned char *o;
+#endif
+
+	d (printf ("32 bit, msb, with alpha\n"));
+
+	width = image->width;
+	height = image->height;
+	bpl = image->bytes_per_line;
+
+	/* msb data */
+	for (yy = 0; yy < height; yy++) {
+#ifdef LITTLE
+		s = (unsigned int *) srow;
+		o = (unsigned int *) orow;
+#else
+		s = srow;
+		o = orow;
+#endif
+		for (xx = 0; xx < width; xx++) {
+#ifdef LITTLE
+			*o++ = s[1];
+			*o++ = s[2];
+			*o++ = s[3];
+			*o++ = 0xff;
+			s += 4;
+#else
+			*o++ = (*s << 8) | 0xff; /* untested */
+			s++;
+#endif
+		}
+		srow += bpl;
+		orow += rowstride;
+	}
+}
+
+static void
+rgb888msb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap)
+{
+	int xx, yy;
+	int width, height;
+	int bpl;
+
+	unsigned char *srow = image->data, *orow = pixels;
+	unsigned char *s;
+	unsigned char *o;
+
+	d (printf ("32 bit, msb, no alpha\n"));
+
+	width = image->width;
+	height = image->height;
+	bpl = image->bytes_per_line;
+
+	for (yy = 0; yy < height; yy++) {
+		s = srow;
+		o = orow;
+		for (xx = 0; xx < width; xx++) {
+			*o++ = s[1];
+			*o++ = s[2];
+			*o++ = s[3];
+			s += 4;
+		}
+		srow += bpl;
+		orow += rowstride;
+	}
+}
+
+/*
+  This should work correctly with any display/any endianness, but will probably
+  run quite slow
+*/
+static void
+convert_real_slow (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *cmap, int alpha)
+{
+	int xx, yy;
+	int width, height;
+	int bpl;
+	unsigned char *srow = image->data, *orow = pixels;
+	unsigned char *s;
+	unsigned char *o;
+	unsigned int pixel;
+	Visual *v;
+	unsigned char component;
+	int i;
+	int red_shift, red_prec, green_shift, green_prec, blue_shift, blue_prec;
+
+	width = image->width;
+	height = image->height;
+	bpl = image->bytes_per_line;
+	v = cmap->visual;
+
+	visual_decompose_mask (v->red_mask, &red_shift, &red_prec);
+	visual_decompose_mask (v->green_mask, &green_shift, &green_prec);
+	visual_decompose_mask (v->blue_mask, &blue_shift, &blue_prec);
+
+	d(printf("rgb  mask/shift/prec = %x:%x:%x %d:%d:%d  %d:%d:%d\n",
+		 v->red_mask, v->green_mask, v->blue_mask,
+		 red_shift, green_shift, blue_shift,
+		 red_prec, green_prec, blue_prec));
+
+	for (yy = 0; yy < height; yy++) {
+		s = srow;
+		o = orow;
+		for (xx = 0; xx < width; xx++) {
+			pixel = XGetPixel (image, xx, yy);
+			switch (v->class) {
+				/* I assume this is right for static & greyscale's too? */
+			case StaticGray:
+			case GrayScale:
+			case StaticColor:
+			case PseudoColor:
+				*o++ = cmap->colors[pixel].red;
+				*o++ = cmap->colors[pixel].green;
+				*o++ = cmap->colors[pixel].blue;
+				break;
+			case TrueColor:
+				/* This is odd because it must sometimes shift left (otherwise
+				   I'd just shift >> (*_shift - 8 + *_prec + <0-7>). This logic
+				   should work for all bit sizes/shifts/etc. */
+				component = 0;
+				for (i = 24; i < 32; i += red_prec)
+					component |= ((pixel & v->red_mask) << (32 - red_shift - red_prec)) >> i;
+				*o++ = component;
+				component = 0;
+				for (i = 24; i < 32; i += green_prec)
+					component |= ((pixel & v->green_mask) << (32 - green_shift - green_prec)) >> i;
+				*o++ = component;
+				component = 0;
+				for (i = 24; i < 32; i += blue_prec)
+					component |= ((pixel & v->blue_mask) << (32 - blue_shift - blue_prec)) >> i;
+				*o++ = component;
+				break;
+			case DirectColor:
+				*o++ = cmap->colors[((pixel & v->red_mask) << (32 - red_shift - red_prec)) >> 24].red;
+				*o++ = cmap->colors[((pixel & v->green_mask) << (32 - green_shift - green_prec)) >> 24].green;
+				*o++ = cmap->colors[((pixel & v->blue_mask) << (32 - blue_shift - blue_prec)) >> 24].blue;
+				break;
+			}
+			if (alpha)
+				*o++ = 0xff;
+		}
+		srow += bpl;
+		orow += rowstride;
+	}
+}
+
+typedef void (* cfunc) (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *cmap);
+
+static cfunc convert_map[] = {
+	rgb1,rgb1,rgb1a,rgb1a,
+	rgb8,rgb8,rgb8a,rgb8a,
+	rgb555lsb,rgb555msb,rgb555alsb,rgb555amsb,
+	rgb565lsb,rgb565msb,rgb565alsb,rgb565amsb,
+	rgb888lsb,rgb888msb,rgb888alsb,rgb888amsb
+};
+
+/*
+  perform actual conversion
+
+  If we can, try and use the optimised code versions, but as a default
+  fallback, and always for direct colour, use the generic/slow but complete
+  conversion function.
+*/
+static void
+rgbconvert (XImage *image, unsigned char *pixels, int rowstride, int alpha, xlib_colormap *cmap)
+{
+	int index = (image->byte_order == MSBFirst) | (alpha != 0) << 1;
+	int bank=5;		/* default fallback converter */
+	Visual *v = cmap->visual;
+
+	d(printf("masks = %x:%x:%x\n", v->red_mask, v->green_mask, v->blue_mask));
+	d(printf("image depth = %d, bpp = %d\n", image->depth, image->bits_per_pixel));
+
+	switch (v->class) {
+				/* I assume this is right for static & greyscale's too? */
+	case StaticGray:
+	case GrayScale:
+	case StaticColor:
+	case PseudoColor:
+		switch (image->bits_per_pixel) {
+		case 1:
+			bank = 0;
+			break;
+		case 8:
+			bank = 1;
+			break;
+		}
+		break;
+	case TrueColor:
+		switch (image->depth) {
+		case 15:
+			if (v->red_mask == 0x7c00 && v->green_mask == 0x3e0 && v->blue_mask == 0x1f
+			    && image->bits_per_pixel == 16)
+				bank = 2;
+			break;
+		case 16:
+			if (v->red_mask == 0xf800 && v->green_mask == 0x7e0 && v->blue_mask == 0x1f
+			    && image->bits_per_pixel == 16)
+				bank = 3;
+			break;
+		case 24:
+		case 32:
+			if (v->red_mask == 0xff0000 && v->green_mask == 0xff00 && v->blue_mask == 0xff
+			    && image->bits_per_pixel == 32)
+				bank = 4;
+			break;
+		}
+		break;
+	case DirectColor:
+		/* always use the slow version */
+		break;
+	}
+
+	d(printf("converting using conversion function in bank %d\n", bank));
+
+	if (bank==5) {
+		convert_real_slow(image, pixels, rowstride, cmap, alpha);
+	} else {
+		index |= bank << 2;
+		(* convert_map[index]) (image, pixels, rowstride, cmap);
+	}
+}
+
+static int
+xlib_window_is_viewable (Window w)
+{
+	XWindowAttributes wa;
+
+	while (w != 0) {
+		Window parent, root, *children;
+		int nchildren;
+
+		XGetWindowAttributes (gdk_pixbuf_dpy, w, &wa);
+		if (wa.map_state != IsViewable)
+			return 0;
+
+		if (!XQueryTree (gdk_pixbuf_dpy, w, &root,
+				 &parent, &children, &nchildren))
+			return 0;
+
+		if (nchildren > 0)
+			XFree (children);
+
+		if (parent == root)
+			return 1;
+
+		w = parent;
+	}
+
+	return 0;
+}
+
+static int
+xlib_window_get_origin (Window w, int *x, int *y)
+{
+	Window child;
+	return XTranslateCoordinates (gdk_pixbuf_dpy, w,
+				      RootWindow (gdk_pixbuf_dpy,
+						  gdk_pixbuf_screen),
+				      0, 0, x, y, &child);
+}