Rgb2True*
initRgb2True ( JNIEnv* env, jclass clazz, Toolkit* Tlk )
{
//Visual *v = DefaultVisualOfScreen( DefaultScreenOfDisplay( Tlk->dsp));
unsigned int m;
int nRed, nGreen, nBlue;
int iRed, iGreen, iBlue;
int n;
Rgb2True *map = 0;
// !!! if ( (v->blue_mask == 0xff) && (v->green_mask == 0xff00) && (v->red_mask == 0xff0000) ){
if (1) { // !!! DEFAULT TRUE-COLOR MODE
/*
* This is our favourite case - a direct 8-8-8 native rgb. It could be handled as
* a 0,0 TrueColor conversion, but (esp. for image manipulations) we can save a lot
* of computation by a special TrueColor mode
*/
DBG( AWT_CLR, printf("AWT color mode: CM_TRUE_888\n"));
Tlk->colorMode = CM_TRUE_888;
}
else {
UNIMPLEMENTED((
/*
* There is either a rearrangement or a non-8 bit color component involved,
* get start index and length of each color component. Note that the Rgb2True
* struct is used to compute pixelvalues from Java rgbs, i.e. the mask and shift
* values are relative to the Java 8-8-8 RGB.
*/
map = (Rgb2True*) AWT_MALLOC( sizeof( Rgb2True));
for ( iBlue=0, m=v->blue_mask; (m & 1) == 0; iBlue++, m >>= 1);
for ( nBlue=0; m; nBlue++, m >>= 1 );
for ( iGreen=0, m=v->green_mask; (m & 1) == 0; iGreen++, m >>= 1);
for ( nGreen=0; m; nGreen++, m >>= 1 );
for ( iRed=0, m=v->red_mask; (m & 1) == 0; iRed++, m >>= 1);
for ( nRed=0; m; nRed++, m >>= 1 );
map->blueShift = 8 - (iBlue + nBlue);
if ( nBlue < 8 ){ /* color reduction */
n = 8 - nBlue;
map->blueMask = (0xff >> n) << n;
}
else { /* color expansion */
Rgb2Pseudo*
initRgb2Pseudo ( JNIEnv* env, jclass clazz, Toolkit* Tlk )
{
Colormap dcm;
int i, j, k;
XColor xclr;
Rgb2Pseudo *map;
dcm = DefaultColormapOfScreen( DefaultScreenOfDisplay( Tlk->dsp));
map = (Rgb2Pseudo*) AWT_MALLOC( sizeof(Rgb2Pseudo));
xclr.flags = DoRed | DoGreen | DoBlue;
for ( i=0; i<8; i++ ){
for ( j=0; j<8; j++ ) {
for ( k=0; k<8; k++ )
map->pix[i][j][k] = 0;
}
}
initColormap( env, Tlk, dcm, map);
Tlk->colorMode = CM_PSEUDO_256;
return map;
}
static Image*
readGif ( GifFileType *gf )
{
Image* firstImg = 0;
Image* img = 0;
int i, extCode, width, height, row, cmapSize;
int trans = -1, nFrames = 0, delay = 0;
GifRecordType rec;
GifByteType *ext;
ColorMapObject *cmap;
GifColorType *clrs;
GifPixelType *rowBuf = (GifPixelType*) AWT_MALLOC( gf->SWidth * sizeof( GifPixelType) );
do {
CHECK( DGifGetRecordType( gf, &rec));
switch ( rec ) {
case IMAGE_DESC_RECORD_TYPE:
CHECK( DGifGetImageDesc( gf));
width = gf->Image.Width;
height = gf->Image.Height;
cmap = (gf->Image.ColorMap) ? gf->Image.ColorMap : gf->SColorMap;
clrs = cmap->Colors;
cmapSize = cmap->ColorCount;
/*
* create our image objects and keep track of frames
*/
if ( !firstImg ) { /* this is the first (maybe only) frame */
firstImg = img = createImage( width, height);
}
else { /* this is a subsequent gif-movie frame, link it in */
img->next = createImage( width, height);
img = img->next;
}
/*
* The trans index might have been cached by a preceeding extension record. Now
* that we have the Image object, it's time to store it in img and to create the
* mask
*/
if ( trans != -1 ) {
img->trans = trans;
createXMaskImage( X, img);
trans = -1;
}
/*
* Some browsers seem to assume minimal values, and some animations
* seem to rely on this. But there's no safe guess, so we
* skip it completely
*/
/*
if ( delay == 0 )
delay = 1000;
else if ( delay < 100 )
delay = 100;
*/
img->latency = delay;
img->left = gf->Image.Left;
img->top = gf->Image.Top;
img->frame = nFrames;
nFrames++;
createXImage( X, img);
/*
* start reading in the image data
*/
if ( gf->Image.Interlace ) {
/* Need to perform 4 passes on the images: */
for ( i = 0; i < 4; i++ ) {
for (row = iOffset[i]; row < height; row += iJumps[i]) {
memset( rowBuf, gf->SBackGroundColor, width);
CHECK( DGifGetLine( gf, rowBuf, width));
writeRow( img, rowBuf, clrs, row);
}
}
}
else {
for ( row = 0; row < height; row++) {
memset( rowBuf, gf->SBackGroundColor, width);
CHECK( DGifGetLine(gf, rowBuf, width));
writeRow( img, rowBuf, clrs, row);
}
}
break;
case EXTENSION_RECORD_TYPE:
CHECK( DGifGetExtension( gf, &extCode, &ext));
if ( extCode == 0xf9 ) { /* graphics extension */
/*
* extension record with transparency spec are preceeding description records
* (which create new Images), so just cache the transp index, here
*/
if ( ext[1] & 1 ) { /* transparent index following */
trans = ext[4];
}
delay = ((ext[3] << 8) | ext[2]) * 10; /* delay in 1/100 secs */
}
else if ( extCode == 0xff ) { /* application extension block */
}
while ( ext != NULL ) {
CHECK( DGifGetExtensionNext( gf, &ext));
}
break;
case TERMINATE_RECORD_TYPE:
break;
default: /* Should be traps by DGifGetRecordType. */
break;
}
} while ( rec != TERMINATE_RECORD_TYPE );
if ( firstImg && (img != firstImg) ){
img->next = firstImg; /* link it together (as a ring) */
}
return firstImg;
}
