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Diffstat (limited to 'contrib/gdk-pixbuf-xlib/gdk-pixbuf-xlib-drawable.c')
-rw-r--r--contrib/gdk-pixbuf-xlib/gdk-pixbuf-xlib-drawable.c1336
1 files changed, 0 insertions, 1336 deletions
diff --git a/contrib/gdk-pixbuf-xlib/gdk-pixbuf-xlib-drawable.c b/contrib/gdk-pixbuf-xlib/gdk-pixbuf-xlib-drawable.c
deleted file mode 100644
index 422fdc866..000000000
--- a/contrib/gdk-pixbuf-xlib/gdk-pixbuf-xlib-drawable.c
+++ /dev/null
@@ -1,1336 +0,0 @@
-/* -*- 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, see <http://www.gnu.org/licenses/>.
- */
-
-/* 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>
-
-/**
- * SECTION:gdk-pixbuf-xlib-from-drawables
- * @Short_description: Getting parts of an X drawable's image data into a pixbuf.
- * @Title: X Drawables to Pixbufs
- *
- * The functions in this section allow you to take the image data
- * from an X drawable and dump it into a #GdkPixbuf. This can be
- * used for screenshots and other special effects. Note that these
- * operations can be expensive, since the image data has to be
- * transferred from the X server to the client program and converted.
- *
- *
- * These functions are analogous to those for the GDK version of
- * &gdk-pixbuf;.
- */
-
-#if (G_BYTE_ORDER == G_LITTLE_ENDIAN)
-#define LITTLE
-#endif
-#define d(x)
-
-
-
-static const guint32 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;
-};
-
-static xlib_colormap *
-xlib_get_colormap (Colormap id, Visual *visual)
-{
- int i;
- xlib_colormap *xc = g_new (xlib_colormap, 1);
-
- xc->size = visual->map_entries;
- xc->colors = g_new (XColor, xc->size);
- xc->visual = visual;
- xc->colormap = id;
-
- for (i = 0; i < xc->size; i++) {
- xc->colors[i].pixel = i;
- xc->colors[i].flags = DoRed | DoGreen | DoBlue;
- }
-
- XQueryColors (gdk_pixbuf_dpy, xc->colormap, xc->colors, xc->size);
-
- return xc;
-}
-
-static void
-xlib_colormap_free (xlib_colormap *xc)
-{
- g_free (xc->colors);
- g_free (xc);
-}
-
-/* from gdkvisual.c */
-static void
-visual_decompose_mask (gulong mask,
- gint *shift,
- gint *prec)
-{
- *shift = 0;
- *prec = 0;
-
- while (!(mask & 0x1)) {
- (*shift)++;
- mask >>= 1;
- }
-
- while (mask & 0x1) {
- (*prec)++;
- mask >>= 1;
- }
-}
-
-static gboolean x_error;
-
-static int
-handle_x_error (Display *dpy, XErrorEvent *ev)
-{
- x_error = TRUE;
- return 0;
-}
-
-static gboolean
-drawable_is_pixmap (Drawable d)
-{
- /* copied from Imlib */
-
- XErrorHandler errh;
- XWindowAttributes wa;
- gboolean is_pixmap;
-
- errh = XSetErrorHandler (handle_x_error);
- x_error = FALSE;
- 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, guchar *pixels, int rowstride, xlib_colormap *colormap)
-{
- int xx, yy;
- int width, height;
- int bpl;
- register guint8 data;
- guint8 *o;
- guint8 *srow = (guint8 *)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++) {
- 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, guchar *pixels, int rowstride, xlib_colormap *colormap)
-{
- int xx, yy;
- int width, height;
- int bpl;
- register guint8 data;
- guint8 *o;
- guint8 *srow = (guint8 *)image->data, *orow = pixels;
- guint32 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++) {
- 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, guchar *pixels, int rowstride, xlib_colormap *colormap)
-{
- int xx, yy;
- int width, height;
- int bpl;
- guint32 mask;
- register guint32 data;
- guint8 *srow = (guint8 *)image->data, *orow = pixels;
- register guint8 *s;
- register guint8 *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, guchar *pixels, int rowstride, xlib_colormap *colormap)
-{
- int xx, yy;
- int width, height;
- int bpl;
- guint32 mask;
- register guint32 data;
- guint32 remap[256];
- register guint8 *s; /* read 2 pixels at once */
- register guint32 *o;
- guint8 *srow = (guint8 *)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 = (guint32 *) 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, guchar *pixels, int rowstride, xlib_colormap *colormap)
-{
- int xx, yy;
- int width, height;
- int bpl;
-
-#ifdef LITTLE
- register guint32 *s; /* read 2 pixels at once */
-#else
- register guint8 *s; /* read 2 pixels at once */
-#endif
- register guint16 *o;
- guint8 *srow = (guint8 *)image->data, *orow = pixels;
-
- width = image->width;
- height = image->height;
- bpl = image->bytes_per_line;
-
- for (yy = 0; yy < height; yy++) {
-#ifdef LITTLE
- s = (guint32 *) srow;
-#else
- s = srow;
-#endif
- o = (guint16 *) orow;
- for (xx = 1; xx < width; xx += 2) {
- register guint32 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[1] | s[0] << 8 | s[3] << 16 | s[2] << 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 guint16 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, guchar *pixels, int rowstride, xlib_colormap *colormap)
-{
- int xx, yy;
- int width, height;
- int bpl;
-
-#ifdef LITTLE
- register guint8 *s; /* need to swap data order */
-#else
- register guint32 *s; /* read 2 pixels at once */
-#endif
- register guint16 *o;
- guint8 *srow = (guint8 *)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 = (guint32 *) srow;
-#endif
- o = (guint16 *) orow;
- for (xx = 1; xx < width; xx += 2) {
- register guint32 data;
-#ifdef LITTLE
- /* swap endianness first */
- data = s[1] | s[0] << 8 | s[3] << 16 | s[2] << 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 guint16 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, guchar *pixels, int rowstride, xlib_colormap *colormap)
-{
- int xx, yy;
- int width, height;
- int bpl;
-
-#ifdef LITTLE
- register guint16 *s; /* read 1 pixels at once */
-#else
- register guint8 *s;
-#endif
- register guint32 *o;
-
- guint8 *srow = (guint8 *)image->data, *orow = pixels;
-
- width = image->width;
- height = image->height;
- bpl = image->bytes_per_line;
-
- for (yy = 0; yy < height; yy++) {
-#ifdef LITTLE
- s = (guint16 *) srow;
-#else
- s = (guint8 *) srow;
-#endif
- o = (guint32 *) orow;
- for (xx = 0; xx < width; xx ++) {
- register guint32 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, guchar *pixels, int rowstride, xlib_colormap *colormap)
-{
- int xx, yy;
- int width, height;
- int bpl;
-
-#ifdef LITTLE
- register guint8 *s;
-#else
- register guint16 *s; /* read 1 pixels at once */
-#endif
- register guint32 *o;
-
- guint8 *srow = (guint8 *)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 = (guint16 *) srow;
-#endif
- o = (guint32 *) orow;
- for (xx = 0; xx < width; xx ++) {
- register guint32 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, guchar *pixels, int rowstride, xlib_colormap *colormap)
-{
- int xx, yy;
- int width, height;
- int bpl;
-
-#ifdef LITTLE
- register guint32 *s; /* read 2 pixels at once */
-#else
- register guint8 *s; /* read 2 pixels at once */
-#endif
- register guint16 *o;
- guint8 *srow = (guint8 *)image->data, *orow = pixels;
-
- width = image->width;
- height = image->height;
- bpl = image->bytes_per_line;
-
- for (yy = 0; yy < height; yy++) {
-#ifdef LITTLE
- s = (guint32 *) srow;
-#else
- s = srow;
-#endif
- o = (guint16 *) orow;
- for (xx = 1; xx < width; xx += 2) {
- register guint32 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[1] | s[0] << 8 | s[3] << 16 | s[2] << 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 guint16 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, guchar *pixels, int rowstride, xlib_colormap *colormap)
-{
- int xx, yy;
- int width, height;
- int bpl;
-
-#ifdef LITTLE
- register guint8 *s; /* read 2 pixels at once */
-#else
- register guint32 *s; /* read 2 pixels at once */
-#endif
- register guint16 *o;
- guint8 *srow = (guint8 *)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 = (guint32 *) srow;
-#endif
- o = (guint16 *) orow;
- for (xx = 1; xx < width; xx += 2) {
- register guint32 data;
-#ifdef LITTLE
- /* swap endianness first */
- data = s[1] | s[0] << 8 | s[3] << 16 | s[2] << 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 guint16 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, guchar *pixels, int rowstride, xlib_colormap *colormap)
-{
- int xx, yy;
- int width, height;
- int bpl;
-
-#ifdef LITTLE
- register guint16 *s; /* read 1 pixels at once */
-#else
- register guint8 *s;
-#endif
- register guint32 *o;
-
- guint8 *srow = (guint8 *)image->data, *orow = pixels;
-
- width = image->width;
- height = image->height;
- bpl = image->bytes_per_line;
-
- for (yy = 0; yy < height; yy++) {
-#ifdef LITTLE
- s = (guint16 *) srow;
-#else
- s = srow;
-#endif
- o = (guint32 *) orow;
- for (xx = 0; xx < width; xx++) {
- register guint32 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, guchar *pixels, int rowstride, xlib_colormap *colormap)
-{
- int xx, yy;
- int width, height;
- int bpl;
-
-#ifdef LITTLE
- register guint16 *s; /* read 1 pixels at once */
-#else
- register guint8 *s;
-#endif
- register guint32 *o;
-
- guint8 *srow = (guint8 *)image->data, *orow = pixels;
-
- width = image->width;
- height = image->height;
- bpl = image->bytes_per_line;
-
- for (yy = 0; yy < height; yy++) {
-#ifdef LITTLE
- s = (guint16 *) srow;
-#else
- s = srow;
-#endif
- o = (guint32 *) orow;
- for (xx = 0; xx < width; xx++) {
- register guint32 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, guchar *pixels, int rowstride, xlib_colormap *colormap)
-{
- int xx, yy;
- int width, height;
- int bpl;
-
- guint8 *s; /* for byte order swapping */
- guint8 *o;
- guint8 *srow = (guint8 *)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, guchar *pixels, int rowstride, xlib_colormap *colormap)
-{
- int xx, yy;
- int width, height;
- int bpl;
-
- guint8 *srow = (guint8 *)image->data, *orow = pixels;
- guint8 *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, guchar *pixels, int rowstride, xlib_colormap *colormap)
-{
- int xx, yy;
- int width, height;
- int bpl;
-
- guint8 *srow = (guint8 *)image->data, *orow = pixels;
- guint8 *s; /* for byte order swapping */
- guint8 *o;
-
- 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++) {
- s = srow;
- o = orow;
- for (xx = 0; xx < width; xx++) {
- *o++ = s[1];
- *o++ = s[2];
- *o++ = s[3];
- *o++ = 0xff;
- s += 4;
- }
- srow += bpl;
- orow += rowstride;
- }
-}
-
-static void
-rgb888msb (XImage *image, guchar *pixels, int rowstride, xlib_colormap *colormap)
-{
- int xx, yy;
- int width, height;
- int bpl;
-
- guint8 *srow = (guint8 *)image->data, *orow = pixels;
- guint8 *s;
- guint8 *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, guchar *pixels, int rowstride, xlib_colormap *cmap, int alpha)
-{
- int xx, yy;
- int width, height;
- int bpl;
- guint8 *srow = (guint8 *)image->data, *orow = pixels;
- guint8 *o;
- guint32 pixel;
- Visual *v;
- guint8 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++) {
- 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, guchar *pixels, int rowstride, xlib_colormap *cmap);
-
-static const 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, guchar *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 gboolean
-xlib_window_is_viewable (Window w)
-{
- XWindowAttributes wa;
-
- while (w != 0) {
- Window parent, root, *children;
- guint nchildren;
-
- XGetWindowAttributes (gdk_pixbuf_dpy, w, &wa);
- if (wa.map_state != IsViewable)
- return FALSE;
-
- if (!XQueryTree (gdk_pixbuf_dpy, w, &root,
- &parent, &children, &nchildren))
- return FALSE;
-
- if (nchildren > 0)
- XFree (children);
-
- if ((parent == root) || (w == root))
- return TRUE;
-
- w = parent;
- }
-
- return FALSE;
-}
-
-static gint
-xlib_window_get_origin (Window w, gint *x, gint *y)
-{
- Window child;
- return XTranslateCoordinates (gdk_pixbuf_dpy, w,
- RootWindow (gdk_pixbuf_dpy,
- gdk_pixbuf_screen),
- 0, 0, x, y, &child);
-}
-
-/* Exported functions */
-
-/**
- * gdk_pixbuf_xlib_get_from_drawable:
- * @dest: Destination pixbuf, or NULL if a new pixbuf should be created.
- * @src: Source drawable.
- * @cmap: A colormap if @src is a pixmap. If it is a window, this argument will
- * be ignored.
- * @visual: A visual if @src is a pixmap. If it is a window, this argument will
- * be ignored.
- * @src_x: Source X coordinate within drawable.
- * @src_y: Source Y coordinate within drawable.
- * @dest_x: Destination X coordinate in pixbuf, or 0 if @dest is NULL.
- * @dest_y: Destination Y coordinate in pixbuf, or 0 if @dest is NULL.
- * @width: Width in pixels of region to get.
- * @height: Height in pixels of region to get.
- *
- * Transfers image data from a Gdk drawable and converts it to an RGB(A)
- * representation inside a GdkPixbuf.
- *
- * If the drawable @src is a pixmap, then a suitable colormap must be specified,
- * since pixmaps are just blocks of pixel data without an associated colormap.
- * If the drawable is a window, the @cmap argument will be ignored and the
- * window's own colormap will be used instead.
- *
- * If the specified destination pixbuf @dest is #NULL, then this function will
- * create an RGB pixbuf with 8 bits per channel and no alpha, with the same size
- * specified by the @width and @height arguments. In this case, the @dest_x and
- * @dest_y arguments must be specified as 0, otherwise the function will return
- * #NULL. If the specified destination pixbuf is not NULL and it contains alpha
- * information, then the filled pixels will be set to full opacity.
- *
- * If the specified drawable is a pixmap, then the requested source rectangle
- * must be completely contained within the pixmap, otherwise the function will
- * return #NULL.
- *
- * If the specified drawable is a window, then it must be viewable, i.e. all of
- * its ancestors up to the root window must be mapped. Also, the specified
- * source rectangle must be completely contained within the window and within
- * the screen. If regions of the window are obscured by noninferior windows, the
- * contents of those regions are undefined. The contents of regions obscured by
- * inferior windows of a different depth than that of the source window will also
- * be undefined.
- *
- * Return value: The same pixbuf as @dest if it was non-NULL, or a newly-created
- * pixbuf with a reference count of 1 if no destination pixbuf was specified; in
- * the latter case, NULL will be returned if not enough memory could be
- * allocated for the pixbuf to be created.
- **/
-GdkPixbuf *
-gdk_pixbuf_xlib_get_from_drawable (GdkPixbuf *dest,
- Drawable src,
- Colormap cmap, Visual *visual,
- int src_x, int src_y,
- int dest_x, int dest_y,
- int width, int height)
-{
- guint src_width, src_height;
- XImage *image;
- int rowstride, bpp, alpha;
- XWindowAttributes wa;
- xlib_colormap *x_cmap;
- gboolean is_pixmap;
-
- /* General sanity checks */
-
- g_return_val_if_fail (src != 0, NULL);
-
- is_pixmap = drawable_is_pixmap (src);
-
- if (is_pixmap) {
- g_return_val_if_fail (cmap != 0, NULL);
- g_return_val_if_fail (visual != NULL, NULL);
- }
- else
- g_return_val_if_fail (xlib_window_is_viewable (src), NULL);
-
- if (!dest)
- g_return_val_if_fail (dest_x == 0 && dest_y == 0, NULL);
- else {
- g_return_val_if_fail (gdk_pixbuf_get_colorspace (dest) == GDK_COLORSPACE_RGB, NULL);
- g_return_val_if_fail (gdk_pixbuf_get_n_channels (dest) == 3
- || gdk_pixbuf_get_n_channels (dest) == 4, NULL);
- g_return_val_if_fail (gdk_pixbuf_get_bits_per_sample (dest) == 8, NULL);
- }
-
- /* Coordinate sanity checks */
-
- if (!is_pixmap) {
- XGetWindowAttributes (gdk_pixbuf_dpy, src, &wa);
- src_width = wa.width;
- src_height = wa.height;
- } else {
- Window root;
- int tx, ty;
- guint bwidth, depth;
- XGetGeometry (gdk_pixbuf_dpy, src, &root, &tx, &ty,
- &src_width, &src_height, &bwidth, &depth);
- }
-
- g_return_val_if_fail (src_x >= 0 && src_y >= 0, NULL);
- g_return_val_if_fail (src_x + width <= src_width
- && src_y + height <= src_height, NULL);
-
- if (dest) {
- g_return_val_if_fail (dest_x >= 0 && dest_y >= 0, NULL);
- g_return_val_if_fail (dest_x + width <= gdk_pixbuf_get_width (dest), NULL);
- g_return_val_if_fail (dest_y + height <= gdk_pixbuf_get_height (dest), NULL);
- }
-
- if (!is_pixmap) {
- int ret;
- int src_xorigin, src_yorigin;
- int screen_width, screen_height;
- int screen_srcx, screen_srcy;
-
- ret = xlib_window_get_origin (src, &src_xorigin, &src_yorigin);
- g_return_val_if_fail (ret != FALSE, NULL);
-
- screen_width = DisplayWidth (gdk_pixbuf_dpy, gdk_pixbuf_screen);
- screen_height = DisplayHeight (gdk_pixbuf_dpy, gdk_pixbuf_screen);
-
- screen_srcx = src_xorigin + src_x;
- screen_srcy = src_yorigin + src_y;
-
- g_return_val_if_fail (screen_srcx >= 0 && screen_srcy >= 0, NULL);
- g_return_val_if_fail (screen_srcx + width <= screen_width, NULL);
- g_return_val_if_fail (screen_srcy + height <= screen_height, NULL);
- }
-
- /* Get Image in ZPixmap format (packed bits). */
- image = XGetImage (gdk_pixbuf_dpy, src, src_x, src_y,
- width, height, AllPlanes, ZPixmap);
- g_return_val_if_fail (image != NULL, NULL);
-
- /* Create the pixbuf if needed */
- if (!dest) {
- dest = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
- FALSE, 8, width, height);
- if (!dest) {
- XDestroyImage (image);
- return NULL;
- }
- }
-
- /* Get the colormap if needed */
- if (!is_pixmap)
- {
- cmap = wa.colormap;
- visual = wa.visual;
- }
-
- x_cmap = xlib_get_colormap (cmap, visual);
-
- alpha = gdk_pixbuf_get_has_alpha (dest);
- rowstride = gdk_pixbuf_get_rowstride (dest);
- bpp = alpha ? 4 : 3;
-
- /* we offset into the image data based on the position we are retrieving from */
- rgbconvert (image, gdk_pixbuf_get_pixels (dest) +
- (dest_y * rowstride) + (dest_x * bpp),
- rowstride,
- alpha,
- x_cmap);
-
- xlib_colormap_free (x_cmap);
- XDestroyImage (image);
-
- return dest;
-}
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