@ -1,28 +1,38 @@
/*
* Creates an GdkPixbuf from a Drawable
/* GdkPixbuf library - convert X drawable information to RGB
*
* Authors :
* Cody Russell < bratsche @ dfw . net >
* Michael Zucchi < zucchi @ zedzone . mmc . com . au >
* Copyright ( C ) 1999 Michael Zucchi
*
* This is licensed software , see the file COPYING for
* details .
* Authors : Michael Zucchi < zucchi @ zedzone . mmc . com . au >
* Cody Russell < bratsche @ dfw . net >
*
* 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 . , 59 Temple Place - Suite 330 ,
* Boston , MA 02111 - 1307 , USA .
*/
# include <config.h>
# include <stdio.h>
# include <string.h>
# include <glib.h>
# include <gmodule.h>
# include "gdk-pixbuf.h"
# include "gdk-pixbuf-drawable.h"
# if (G_BYTE_ORDER == G_LITTLE_ENDIAN)
# define LITTLE
# endif
# define d(x)
static unsigned long mask_table [ ] = {
0x00000000 , 0x00000001 , 0x00000003 , 0x00000007 ,
0x0000000f , 0x0000001f , 0x0000003f , 0x0000007f ,
@ -35,11 +45,14 @@ static unsigned long mask_table[] = {
0xffffffff
} ;
/*
convert 1 bits - pixel data
no alpha
*/
static void rgb1 ( GdkImage * image , art_u8 * pixels , int rowstride )
static void
rgb1 ( GdkImage * image , art_u8 * pixels , int rowstride )
{
int xx , yy ;
int width , height ;
@ -48,7 +61,7 @@ static void rgb1(GdkImage *image, art_u8 *pixels, int rowstride)
register unsigned char data ;
unsigned char * o ;
unsigned char * srow = image - > mem , * orow = pixels ;
GdkColormap * colormap ;
GdkColormap * colormap ;
d ( printf ( " 1 bits/pixel \n " ) ) ;
@ -58,15 +71,15 @@ static void rgb1(GdkImage *image, art_u8 *pixels, int rowstride)
width = image - > width ;
height = image - > height ;
bpl = image - > bpl ;
colormap = gdk_rgb_get_cmap ( ) ;
for ( yy = 0 ; yy < height ; yy + + ) {
s = srow ;
o = orow ;
for ( xx = 0 ; xx < width ; xx + + ) {
data = srow [ xx > > 3 ] > > ( 7 - ( xx & 7 ) ) & 1 ;
data = srow [ xx > > 3 ] > > ( 7 - ( xx & 7 ) ) & 1 ;
* o + + = colormap - > colors [ data ] . red ;
* o + + = colormap - > colors [ data ] . green ;
* o + + = colormap - > colors [ data ] . blue ;
@ -80,7 +93,8 @@ static void rgb1(GdkImage *image, art_u8 *pixels, int rowstride)
convert 1 bits / pixel data
with alpha
*/
static void rgb1a ( GdkImage * image , art_u8 * pixels , int rowstride )
static void
rgb1a ( GdkImage * image , art_u8 * pixels , int rowstride )
{
int xx , yy ;
int width , height ;
@ -90,7 +104,7 @@ static void rgb1a(GdkImage *image, art_u8 *pixels, int rowstride)
unsigned char * o ;
unsigned char * srow = image - > mem , * orow = pixels ;
unsigned long remap [ 2 ] ;
GdkColormap * colormap ;
GdkColormap * colormap ;
d ( printf ( " 1 bits/pixel \n " ) ) ;
@ -100,29 +114,29 @@ static void rgb1a(GdkImage *image, art_u8 *pixels, int rowstride)
width = image - > width ;
height = image - > height ;
bpl = image - > bpl ;
colormap = gdk_rgb_get_cmap ( ) ;
for ( xx = 0 ; xx < 2 ; xx + + ) {
for ( xx = 0 ; xx < 2 ; xx + + ) {
# ifdef LITTLE
remap [ xx ] = 0xff000000
| colormap - > colors [ xx ] . blue < < 16
| colormap - > colors [ xx ] . green < < 8
| 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 ] . red < < 8 ;
| colormap - > colors [ xx ] . red < < 24
| colormap - > colors [ xx ] . green < < 16
| colormap - > colors [ xx ] . red < < 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 ;
data = srow [ xx > > 3 ] > > ( 7 - ( xx & 7 ) ) & 1 ;
* o + + = remap [ data ] ;
}
srow + = bpl ;
@ -134,7 +148,8 @@ static void rgb1a(GdkImage *image, art_u8 *pixels, int rowstride)
convert 8 bits / pixel data
no alpha
*/
static void rgb8 ( GdkImage * image , art_u8 * pixels , int rowstride )
static void
rgb8 ( GdkImage * image , art_u8 * pixels , int rowstride )
{
int xx , yy ;
int width , height ;
@ -144,18 +159,18 @@ static void rgb8(GdkImage *image, art_u8 *pixels, int rowstride)
unsigned char * srow = image - > mem , * orow = pixels ;
register unsigned char * s ;
register unsigned char * o ;
GdkColormap * colormap ;
GdkColormap * colormap ;
width = image - > width ;
height = image - > height ;
bpl = image - > bpl ;
d ( printf ( " 8 bit, no alpha output \n " ) ) ;
d ( printf ( " 8 bit, no alpha output \n " ) ) ;
colormap = gdk_rgb_get_cmap ( ) ;
mask = mask_table [ image - > depth ] ;
for ( yy = 0 ; yy < height ; yy + + ) {
for ( yy = 0 ; yy < height ; yy + + ) {
s = srow ;
o = orow ;
for ( xx = 0 ; xx < width ; xx + + ) {
@ -173,7 +188,8 @@ static void rgb8(GdkImage *image, art_u8 *pixels, int rowstride)
convert 8 bits / pixel data
with alpha
*/
static void rgb8a ( GdkImage * image , art_u8 * pixels , int rowstride )
static void
rgb8a ( GdkImage * image , art_u8 * pixels , int rowstride )
{
int xx , yy ;
int width , height ;
@ -181,37 +197,37 @@ static void rgb8a(GdkImage *image, art_u8 *pixels, int rowstride)
unsigned long mask ;
register unsigned long data ;
GdkColormap * colormap ;
unsigned long remap [ 256 ] ;
unsigned long remap [ 256 ] ;
register unsigned char * s ; /* read 2 pixels at once */
register unsigned long * o ;
unsigned char * srow = image - > mem , * orow = pixels ;
width = image - > width ;
height = image - > height ;
bpl = image - > bpl ;
d ( printf ( " 8 bit, with alpha output \n " ) ) ;
d ( printf ( " 8 bit, with alpha output \n " ) ) ;
colormap = gdk_rgb_get_cmap ( ) ;
mask = mask_table [ image - > depth ] ;
for ( xx = 0 ; xx < colormap - > size ; xx + + ) {
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 ] . 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 ] . red < < 8 ;
| colormap - > colors [ xx ] . red < < 24
| colormap - > colors [ xx ] . green < < 16
| colormap - > colors [ xx ] . red < < 8 ;
# endif
}
for ( yy = 0 ; yy < height ; yy + + ) {
for ( yy = 0 ; yy < height ; yy + + ) {
s = srow ;
o = ( unsigned long * ) orow ;
o = ( unsigned long * ) orow ;
for ( xx = 0 ; xx < width ; xx + + ) {
data = * s + + & mask ;
* o + + = remap [ data ] ;
@ -226,12 +242,13 @@ static void rgb8a(GdkImage *image, art_u8 *pixels, int rowstride)
no alpha
data in lsb format
*/
static void rgb565lsb ( GdkImage * image , art_u8 * pixels , int rowstride )
static void
rgb565lsb ( GdkImage * image , art_u8 * pixels , int rowstride )
{
int xx , yy ;
int width , height ;
int bpl ;
# ifdef LITTLE
register unsigned long * s ; /* read 2 pixels at once */
# else
@ -239,18 +256,18 @@ static void rgb565lsb(GdkImage *image, art_u8 *pixels, int rowstride)
# endif
register unsigned short * o ;
unsigned char * srow = image - > mem , * orow = pixels ;
width = image - > width ;
height = image - > height ;
bpl = image - > bpl ;
for ( yy = 0 ; yy < height ; yy + + ) {
for ( yy = 0 ; yy < height ; yy + + ) {
# ifdef LITTLE
s = ( unsigned long * ) srow ;
s = ( unsigned long * ) srow ;
# else
s = ( unsigned char * ) srow ;
s = ( unsigned char * ) srow ;
# endif
o = ( unsigned short * ) orow ;
o = ( unsigned short * ) orow ;
for ( xx = 1 ; xx < width ; xx + = 2 ) {
register unsigned long data ;
# ifdef LITTLE
@ -260,8 +277,8 @@ static void rgb565lsb(GdkImage *image, art_u8 *pixels, int rowstride)
* o + + = ( ( data & 0x7e00000 ) > > 19 ) | ( data & 0x1f0000 ) > > 5 ;
# else
/* swap endianness first */
data = s [ 0 ] | s [ 1 ] < < 8 | s [ 2 ] < < 16 | s [ 3 ] < < 24 ;
s + = 4 ;
data = s [ 0 ] | s [ 1 ] < < 8 | s [ 2 ] < < 16 | s [ 3 ] < < 24 ;
s + = 4 ;
* o + + = ( data & 0xf800 ) | ( data & 0x7e0 ) > > 3 ;
* o + + = ( data & 0x1f ) < < 11 | ( data & 0xf8000000 ) > > 24 ;
* o + + = ( ( data & 0x7e00000 ) > > 11 ) | ( data & 0x1f0000 ) > > 13 ;
@ -290,12 +307,13 @@ static void rgb565lsb(GdkImage *image, art_u8 *pixels, int rowstride)
no alpha
data in msb format
*/
static void rgb565msb ( GdkImage * image , art_u8 * pixels , int rowstride )
static void
rgb565msb ( GdkImage * image , art_u8 * pixels , int rowstride )
{
int xx , yy ;
int width , height ;
int bpl ;
# ifdef LITTLE
register unsigned char * s ; /* need to swap data order */
# else
@ -303,24 +321,24 @@ static void rgb565msb(GdkImage *image, art_u8 *pixels, int rowstride)
# endif
register unsigned short * o ;
unsigned char * srow = image - > mem , * orow = pixels ;
width = image - > width ;
height = image - > height ;
bpl = image - > bpl ;
for ( yy = 0 ; yy < height ; yy + + ) {
for ( yy = 0 ; yy < height ; yy + + ) {
# ifdef LITTLE
s = srow ;
# else
s = ( unsigned long * ) srow ;
s = ( unsigned long * ) srow ;
# endif
o = ( unsigned short * ) orow ;
o = ( unsigned short * ) orow ;
for ( xx = 1 ; xx < width ; xx + = 2 ) {
register unsigned long data ;
# ifdef LITTLE
/* swap endianness first */
data = s [ 0 ] | s [ 1 ] < < 8 | s [ 2 ] < < 16 | s [ 3 ] < < 24 ;
s + = 4 ;
data = s [ 0 ] | s [ 1 ] < < 8 | s [ 2 ] < < 16 | s [ 3 ] < < 24 ;
s + = 4 ;
* o + + = ( data & 0xf800 ) > > 8 | ( data & 0x7e0 ) < < 5 ;
* o + + = ( data & 0x1f ) < < 3 | ( data & 0xf8000000 ) > > 16 ;
* o + + = ( ( data & 0x7e00000 ) > > 19 ) | ( data & 0x1f0000 ) > > 5 ;
@ -354,7 +372,8 @@ static void rgb565msb(GdkImage *image, art_u8 *pixels, int rowstride)
with alpha
data in lsb format
*/
static void rgb565alsb ( GdkImage * image , art_u8 * pixels , int rowstride )
static void
rgb565alsb ( GdkImage * image , art_u8 * pixels , int rowstride )
{
int xx , yy ;
int width , height ;
@ -366,32 +385,32 @@ static void rgb565alsb(GdkImage *image, art_u8 *pixels, int rowstride)
register unsigned char * s ;
# endif
register unsigned long * o ;
unsigned char * srow = image - > mem , * orow = pixels ;
width = image - > width ;
height = image - > height ;
bpl = image - > bpl ;
for ( yy = 0 ; yy < height ; yy + + ) {
for ( yy = 0 ; yy < height ; yy + + ) {
# ifdef LITTLE
s = ( unsigned short * ) srow ;
s = ( unsigned short * ) srow ;
# else
s = ( unsigned char * ) srow ;
s = ( unsigned char * ) srow ;
# endif
o = ( unsigned long * ) orow ;
o = ( unsigned long * ) orow ;
for ( xx = 0 ; xx < width ; xx + + ) {
register unsigned long data ;
/* rrrrrggg gggbbbbb -> rrrrr000 gggggg00 bbbbb000 aaaaaaaa */
/* little endian: aaaaaaaa bbbbb000 gggggg00 rrrrr000 */
# ifdef LITTLE
data = * s + + ;
* o + + = ( data & 0xf800 ) > > 8 | ( data & 0x7e0 ) < < 5
* o + + = ( data & 0xf800 ) > > 8 | ( data & 0x7e0 ) < < 5
| ( data & 0x1f ) < < 19 | 0xff000000 ;
# else
/* swap endianness first */
data = s [ 0 ] | s [ 1 ] < < 8 ;
s + = 2 ;
data = s [ 0 ] | s [ 1 ] < < 8 ;
s + = 2 ;
* o + + = ( data & 0xf800 ) < < 16 | ( data & 0x7e0 ) < < 13
| ( data & 0x1f ) < < 11 | 0xff ;
# endif
@ -406,7 +425,8 @@ static void rgb565alsb(GdkImage *image, art_u8 *pixels, int rowstride)
with alpha
data in msb format
*/
static void rgb565amsb ( GdkImage * image , art_u8 * pixels , int rowstride )
static void
rgb565amsb ( GdkImage * image , art_u8 * pixels , int rowstride )
{
int xx , yy ;
int width , height ;
@ -418,25 +438,25 @@ static void rgb565amsb(GdkImage *image, art_u8 *pixels, int rowstride)
register unsigned short * s ; /* read 1 pixels at once */
# endif
register unsigned long * o ;
unsigned char * srow = image - > mem , * orow = pixels ;
width = image - > width ;
height = image - > height ;
bpl = image - > bpl ;
for ( yy = 0 ; yy < height ; yy + + ) {
for ( yy = 0 ; yy < height ; yy + + ) {
s = srow ;
o = ( unsigned long * ) orow ;
o = ( unsigned long * ) orow ;
for ( xx = 0 ; xx < width ; xx + + ) {
register unsigned long data ;
/* rrrrrggg gggbbbbb -> rrrrr000 gggggg00 bbbbb000 aaaaaaaa */
/* little endian: aaaaaaaa bbbbb000 gggggg00 rrrrr000 */
# ifdef LITTLE
/* swap endianness first */
data = s [ 0 ] | s [ 1 ] < < 8 ;
s + = 2 ;
* o + + = ( data & 0xf800 ) > > 8 | ( data & 0x7e0 ) < < 5
data = s [ 0 ] | s [ 1 ] < < 8 ;
s + = 2 ;
* o + + = ( data & 0xf800 ) > > 8 | ( data & 0x7e0 ) < < 5
| ( data & 0x1f ) < < 19 | 0xff000000 ;
# else
data = * s + + ;
@ -454,12 +474,13 @@ static void rgb565amsb(GdkImage *image, art_u8 *pixels, int rowstride)
no alpha
data in lsb format
*/
static void rgb555lsb ( GdkImage * image , art_u8 * pixels , int rowstride )
static void
rgb555lsb ( GdkImage * image , art_u8 * pixels , int rowstride )
{
int xx , yy ;
int width , height ;
int bpl ;
# ifdef LITTLE
register unsigned long * s ; /* read 2 pixels at once */
# else
@ -467,18 +488,18 @@ static void rgb555lsb(GdkImage *image, art_u8 *pixels, int rowstride)
# endif
register unsigned short * o ;
unsigned char * srow = image - > mem , * orow = pixels ;
width = image - > width ;
height = image - > height ;
bpl = image - > bpl ;
for ( yy = 0 ; yy < height ; yy + + ) {
for ( yy = 0 ; yy < height ; yy + + ) {
# ifdef LITTLE
s = ( unsigned long * ) srow ;
s = ( unsigned long * ) srow ;
# else
s = srow ;
# endif
o = ( unsigned short * ) orow ;
o = ( unsigned short * ) orow ;
for ( xx = 1 ; xx < width ; xx + = 2 ) {
register unsigned long data ;
# ifdef LITTLE
@ -488,8 +509,8 @@ static void rgb555lsb(GdkImage *image, art_u8 *pixels, int rowstride)
* o + + = ( ( data & 0x3e00000 ) > > 18 ) | ( data & 0x1f0000 ) > > 5 ;
# else
/* swap endianness first */
data = s [ 0 ] | s [ 1 ] < < 8 | s [ 2 ] < < 16 | s [ 3 ] < < 24 ;
s + = 4 ;
data = s [ 0 ] | s [ 1 ] < < 8 | s [ 2 ] < < 16 | s [ 3 ] < < 24 ;
s + = 4 ;
* o + + = ( data & 0x7c00 ) < < 1 | ( data & 0x3e0 ) > > 2 ;
* o + + = ( data & 0x1f ) < < 11 | ( data & 0x7c000000 ) > > 23 ;
* o + + = ( ( data & 0x3e00000 ) > > 10 ) | ( data & 0x1f0000 ) > > 13 ;
@ -518,12 +539,13 @@ static void rgb555lsb(GdkImage *image, art_u8 *pixels, int rowstride)
no alpha
data in msb format
*/
static void rgb555msb ( GdkImage * image , art_u8 * pixels , int rowstride )
static void
rgb555msb ( GdkImage * image , art_u8 * pixels , int rowstride )
{
int xx , yy ;
int width , height ;
int bpl ;
# ifdef LITTLE
register unsigned char * s ; /* read 2 pixels at once */
# else
@ -531,20 +553,20 @@ static void rgb555msb(GdkImage *image, art_u8 *pixels, int rowstride)
# endif
register unsigned short * o ;
unsigned char * srow = image - > mem , * orow = pixels ;
width = image - > width ;
height = image - > height ;
bpl = image - > bpl ;
for ( yy = 0 ; yy < height ; yy + + ) {
for ( yy = 0 ; yy < height ; yy + + ) {
s = srow ;
o = ( unsigned short * ) orow ;
o = ( unsigned short * ) orow ;
for ( xx = 1 ; xx < width ; xx + = 2 ) {
register unsigned long data ;
# ifdef LITTLE
/* swap endianness first */
data = s [ 0 ] | s [ 1 ] < < 8 | s [ 2 ] < < 16 | s [ 3 ] < < 24 ;
s + = 4 ;
data = s [ 0 ] | s [ 1 ] < < 8 | s [ 2 ] < < 16 | s [ 3 ] < < 24 ;
s + = 4 ;
* o + + = ( data & 0x7c00 ) > > 7 | ( data & 0x3e0 ) < < 6 ;
* o + + = ( data & 0x1f ) < < 3 | ( data & 0x7c000000 ) > > 15 ;
* o + + = ( ( data & 0x3e00000 ) > > 18 ) | ( data & 0x1f0000 ) > > 5 ;
@ -578,7 +600,8 @@ static void rgb555msb(GdkImage *image, art_u8 *pixels, int rowstride)
with alpha
data in lsb format
*/
static void rgb555alsb ( GdkImage * image , art_u8 * pixels , int rowstride )
static void
rgb555alsb ( GdkImage * image , art_u8 * pixels , int rowstride )
{
int xx , yy ;
int width , height ;
@ -590,32 +613,32 @@ static void rgb555alsb(GdkImage *image, art_u8 *pixels, int rowstride)
register unsigned char * s ;
# endif
register unsigned long * o ;
unsigned char * srow = image - > mem , * orow = pixels ;
width = image - > width ;
height = image - > height ;
bpl = image - > bpl ;
for ( yy = 0 ; yy < height ; yy + + ) {
for ( yy = 0 ; yy < height ; yy + + ) {
# ifdef LITTLE
s = ( unsigned short * ) srow ;
s = ( unsigned short * ) srow ;
# else
s = srow ;
# endif
o = ( unsigned long * ) orow ;
o = ( unsigned long * ) orow ;
for ( xx = 0 ; xx < width ; xx + + ) {
register unsigned long data ;
/* rrrrrggg gggbbbbb -> rrrrr000 gggggg00 bbbbb000 aaaaaaaa */
/* little endian: aaaaaaaa bbbbb000 gggggg00 rrrrr000 */
# ifdef LITTLE
data = * s + + ;
* o + + = ( data & 0x7c00 ) > > 7 | ( data & 0x3e0 ) < < 6
* o + + = ( data & 0x7c00 ) > > 7 | ( data & 0x3e0 ) < < 6
| ( data & 0x1f ) < < 19 | 0xff000000 ;
# else
/* swap endianness first */
data = s [ 0 ] | s [ 1 ] < < 8 ;
s + = 2 ;
data = s [ 0 ] | s [ 1 ] < < 8 ;
s + = 2 ;
* o + + = ( data & 0x7c00 ) < < 17 | ( data & 0x3e0 ) < < 14
| ( data & 0x1f ) < < 11 | 0xff ;
# endif
@ -630,7 +653,8 @@ static void rgb555alsb(GdkImage *image, art_u8 *pixels, int rowstride)
with alpha
data in msb format
*/
static void rgb555amsb ( GdkImage * image , art_u8 * pixels , int rowstride )
static void
rgb555amsb ( GdkImage * image , art_u8 * pixels , int rowstride )
{
int xx , yy ;
int width , height ;
@ -642,28 +666,28 @@ static void rgb555amsb(GdkImage *image, art_u8 *pixels, int rowstride)
register unsigned char * s ;
# endif
register unsigned long * o ;
unsigned char * srow = image - > mem , * orow = pixels ;
width = image - > width ;
height = image - > height ;
bpl = image - > bpl ;
for ( yy = 0 ; yy < height ; yy + + ) {
for ( yy = 0 ; yy < height ; yy + + ) {
# ifdef LITTLE
s = ( unsigned short * ) srow ;
s = ( unsigned short * ) srow ;
# else
s = srow ;
# endif
o = ( unsigned long * ) orow ;
o = ( unsigned long * ) orow ;
for ( xx = 0 ; xx < width ; xx + + ) {
register unsigned long data ;
/* rrrrrggg gggbbbbb -> rrrrr000 gggggg00 bbbbb000 aaaaaaaa */
/* little endian: aaaaaaaa bbbbb000 gggggg00 rrrrr000 */
# ifdef LITTLE
/* swap endianness first */
data = s [ 0 ] | s [ 1 ] < < 8 ;
s + = 2 ;
data = s [ 0 ] | s [ 1 ] < < 8 ;
s + = 2 ;
* o + + = ( data & 0x7c00 ) > > 7 | ( data & 0x3e0 ) < < 6
| ( data & 0x1f ) < < 19 | 0xff000000 ;
# else
@ -678,7 +702,8 @@ static void rgb555amsb(GdkImage *image, art_u8 *pixels, int rowstride)
}
static void rgb888alsb ( GdkImage * image , art_u8 * pixels , int rowstride )
static void
rgb888alsb ( GdkImage * image , art_u8 * pixels , int rowstride )
{
int xx , yy ;
int width , height ;
@ -691,9 +716,9 @@ static void rgb888alsb(GdkImage *image, art_u8 *pixels, int rowstride)
width = image - > width ;
height = image - > height ;
bpl = image - > bpl ;
d ( printf ( " 32 bits/pixel with alpha \n " ) ) ;
d ( printf ( " 32 bits/pixel with alpha \n " ) ) ;
/* lsb data */
for ( yy = 0 ; yy < height ; yy + + ) {
s = srow ;
@ -710,7 +735,8 @@ static void rgb888alsb(GdkImage *image, art_u8 *pixels, int rowstride)
}
}
static void rgb888lsb ( GdkImage * image , art_u8 * pixels , int rowstride )
static void
rgb888lsb ( GdkImage * image , art_u8 * pixels , int rowstride )
{
int xx , yy ;
int width , height ;
@ -723,7 +749,7 @@ static void rgb888lsb(GdkImage *image, art_u8 *pixels, int rowstride)
height = image - > height ;
bpl = image - > bpl ;
d ( printf ( " 32 bit, lsb, no alpha \n " ) ) ;
d ( printf ( " 32 bit, lsb, no alpha \n " ) ) ;
for ( yy = 0 ; yy < height ; yy + + ) {
s = srow ;
@ -739,7 +765,8 @@ static void rgb888lsb(GdkImage *image, art_u8 *pixels, int rowstride)
}
}
static void rgb888amsb ( GdkImage * image , art_u8 * pixels , int rowstride )
static void
rgb888amsb ( GdkImage * image , art_u8 * pixels , int rowstride )
{
int xx , yy ;
int width , height ;
@ -754,7 +781,7 @@ static void rgb888amsb(GdkImage *image, art_u8 *pixels, int rowstride)
unsigned char * o ;
# endif
d ( printf ( " 32 bit, msb, with alpha \n " ) ) ;
d ( printf ( " 32 bit, msb, with alpha \n " ) ) ;
width = image - > width ;
height = image - > height ;
@ -763,8 +790,8 @@ static void rgb888amsb(GdkImage *image, art_u8 *pixels, int rowstride)
/* msb data */
for ( yy = 0 ; yy < height ; yy + + ) {
# ifdef LITTLE
s = ( unsigned long * ) srow ;
o = ( unsigned long * ) orow ;
s = ( unsigned long * ) srow ;
o = ( unsigned long * ) orow ;
# else
s = srow ;
o = orow ;
@ -777,7 +804,7 @@ static void rgb888amsb(GdkImage *image, art_u8 *pixels, int rowstride)
* o + + = 0xff ;
s + = 4 ;
# else
* o + + = ( * s < < 8 ) | 0xff ; /* untested */
* o + + = ( * s < < 8 ) | 0xff ; /* untested */
s + + ;
# endif
}
@ -786,7 +813,8 @@ static void rgb888amsb(GdkImage *image, art_u8 *pixels, int rowstride)
}
}
static void rgb888msb ( GdkImage * image , art_u8 * pixels , int rowstride )
static void
rgb888msb ( GdkImage * image , art_u8 * pixels , int rowstride )
{
int xx , yy ;
int width , height ;
@ -796,7 +824,7 @@ static void rgb888msb(GdkImage *image, art_u8 *pixels, int rowstride)
unsigned char * s ;
unsigned char * o ;
d ( printf ( " 32 bit, msb, no alpha \n " ) ) ;
d ( printf ( " 32 bit, msb, no alpha \n " ) ) ;
width = image - > width ;
height = image - > height ;
@ -816,7 +844,7 @@ static void rgb888msb(GdkImage *image, art_u8 *pixels, int rowstride)
}
}
typedef void ( * cfunc ) ( GdkImage * image , art_u8 * pixels , int rowstride ) ;
typedef void ( * cfunc ) ( GdkImage * image , art_u8 * pixels , int rowstride ) ;
static cfunc convert_map [ ] = {
rgb1 , rgb1 , rgb1a , rgb1a ,
@ -829,22 +857,37 @@ static cfunc convert_map[] = {
/*
perform actual conversion
*/
static void rgbconvert ( GdkImage * image , art_u8 * pixels , int rowstride , int alpha )
static void
rgbconvert ( GdkImage * image , art_u8 * pixels , int rowstride , int alpha )
{
int index = ( image - > byte_order = = GDK_MSB_FIRST )
| ( alpha ! = 0 ) < < 1 ;
int index = ( image - > byte_order = = GDK_MSB_FIRST ) | ( alpha ! = 0 ) < < 1 ;
int bank = 0 ;
switch ( image - > depth ) {
case 1 : bank = 0 ; break ;
case 8 : bank = 1 ; break ;
case 15 : bank = 2 ; break ;
case 16 : bank = 3 ; break ;
case 1 :
bank = 0 ;
break ;
case 8 :
bank = 1 ;
break ;
case 15 :
bank = 2 ;
break ;
case 16 :
bank = 3 ;
break ;
case 24 :
case 32 : bank = 4 ; break ;
case 32 :
bank = 4 ;
break ;
}
index | = bank < < 2 ;
convert_map [ index ] ( image , pixels , rowstride ) ;
index | = bank < < 2 ;
( * convert_map [ index ] ) ( image , pixels , rowstride ) ;
}
static GdkPixbuf *
@ -860,15 +903,15 @@ gdk_pixbuf_from_drawable_core (GdkPixmap * window, gint x, gint y, gint width,
gint screen_width , screen_height ;
gint window_width , window_height , window_x , window_y ;
int bpl ;
g_return_val_if_fail ( window ! = NULL , NULL ) ;
/* always returns image in ZPixmap format ... */
image = gdk_image_get ( window , x , y , width , height ) ;
fatness = with_alpha ? 4 : 3 ;
rowstride = width * fatness ;
buff = art_alloc ( rowstride * height ) ;
pixels = buff ;
@ -878,38 +921,153 @@ gdk_pixbuf_from_drawable_core (GdkPixmap * window, gint x, gint y, gint width,
printf ( " byte order = %d \n " , image - > byte_order ) ;
printf ( " bytes/line = %d \n " , image - > bpl ) ;
# endif
bpl = image - > bpl ;
rgbconvert ( image , pixels , rowstride , with_alpha ) ;
rgbconvert ( image , pixels , rowstride , with_alpha ) ;
gdk_image_destroy ( image ) ;
if ( with_alpha )
art_pixbuf = art_pixbuf_new_rgba ( buff , width , height , rowstride ) ;
else
art_pixbuf = art_pixbuf_new_rgb ( buff , width , height , rowstride ) ;
return gdk_pixbuf_new_from_art_pixbuf ( art_pixbuf ) ;
}
/* Public functions */
GdkPixbuf *
gdk_pixbuf_rgb_from_drawable ( GdkWindow * window , gint x , gint y , gint width ,
gint height )
{
return gdk_pixbuf_from_drawable_core ( window , x , y , width , height , 0 ) ;
}
GdkPixbuf *
gdk_pixbuf_rgba_from_drawable ( GdkWindow * window , gint x , gint y , gint width ,
gint height )
{
return gdk_pixbuf_from_drawable_core ( window , x , y , width , height , 1 ) ;
}
/* Exported functions */
/*
* Local variables :
* c - basic - offset : 8
* End :
*/
/**
* gdk_pixbuf_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 .
* @ 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 .
* */
GdkPixbuf *
gdk_pixbuf_get_from_drawable ( GdkPixbuf * dest ,
GdkDrawable * src , GdkColormap * cmap ,
int src_x , int src_y ,
int dest_x , int dest_y ,
int width , int height )
{
GdkWindowType window_type ;
gint src_width , src_height ;
ArtPixBuf * apb ;
/* General sanity checks */
g_return_val_if_fail ( src ! = NULL , NULL ) ;
window_type = gdk_window_get_type ( src ) ;
if ( window_type = = GDK_WINDOW_PIXMAP )
g_return_val_if_fail ( cmap ! = NULL , NULL ) ;
else
/* FIXME: this is not perfect, since is_viewable() only tests
* recursively up the Gdk parent window tree , but stops at
* foreign windows or Gdk toplevels . I . e . if a window manager
* unmapped one of its own windows , this won ' t work .
*/
g_return_val_if_fail ( gdk_window_is_viewable ( src ) , NULL ) ;
if ( ! dest )
g_return_val_if_fail ( dest_x = = 0 & & dest_y = = 0 , NULL ) ;
else {
apb = dest - > art_pixbuf ;
g_return_val_if_fail ( apb - > format = = ART_PIX_RGB , NULL ) ;
g_return_val_if_fail ( apb - > n_channels = = 3 | | apb - > n_channels = = 4 , NULL ) ;
g_return_val_if_fail ( apb - > bits_per_sample = = 8 , NULL ) ;
}
/* Coordinate sanity checks */
gdk_window_get_size ( src , & src_width , & src_height ) ;
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 < = apb - > width , NULL ) ;
g_return_val_if_fail ( dest_y + height < = apb - > height , NULL ) ;
}
if ( window_type ! = GDK_WINDOW_PIXMAP ) {
int ret ;
gint src_xorigin , src_yorigin ;
int screen_width , screen_height ;
int screen_srcx , screen_srcy ;
ret = gdk_window_get_origin ( src , & src_xorigin , & src_yorigin ) ;
g_return_val_if_fail ( ret ! = FALSE , NULL ) ;
screen_width = gdk_screen_width ( ) ;
screen_height = gdk_screen_height ( ) ;
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 ) ;
}
/* Create the pixbuf if needed */
if ( ! dest ) {
dest = gdk_pixbuf_new ( ART_PIX_RGB , FALSE , 8 , width , height ) ;
if ( ! dest )
return NULL ;
apb = dest - > art_pixbuf ;
}
/* Get the colormap if needed */
if ( window_type ! = GDK_WINDOW_PIXMAP )
cmap = gdk_window_get_colormap ( src ) ;
/* FIXME: fill in the body here */
return dest ;
}
Federico Mena Quintero
Arturo Espinosa