boolean isAlphaComp = false;
int rule = 0;
float alpha = 0;
boolean isXORComp = false;
Color xorcolor = null;
CompositeContext cont = null;
if(comp instanceof AlphaComposite){
isAlphaComp = true;
AlphaComposite ac = (AlphaComposite) comp;
rule = ac.getRule();
alpha = ac.getAlpha();
}else if(comp instanceof XORComposite){
isXORComp = true;
XORComposite xcomp = (XORComposite) comp;
xorcolor = xcomp.getXORColor();
}else{
cont = comp.createContext(srcCM, dstCM, null);
}
for(int i = 1; i < clipRects[0]; i += 4){
int _sx = srcX;
int _sy = srcY;
int _dx = dstX;
int _dy = dstY;
int _w = width;
int _h = height;
int cx = clipRects[i]; // Clipping left top X
int cy = clipRects[i + 1]; // Clipping left top Y
int cx2 = clipRects[i + 2]; // Clipping right bottom X
int cy2 = clipRects[i + 3]; // Clipping right bottom Y
if(_dx > cx2 || _dy > cy2 || dstX2 < cx || dstY2 < cy) {
continue;
}
if(cx > _dx){
int shx = cx - _dx;
_w -= shx;
_dx = cx;
_sx += shx;
}
if(cy > _dy){
int shy = cy - _dy;
_h -= shy;
_dy = cy;
_sy += shy;
}
if(_dx + _w > cx2 + 1){
_w = cx2 - _dx + 1;
}
if(_dy + _h > cy2 + 1){
_h = cy2 - _dy + 1;
}
if(_sx > srcX2 || _sy > srcY2) {
continue;
}
if(isAlphaComp){
alphaCompose(_sx, _sy, srcCM, srcRast, _dx, _dy,
dstCM, dstRast, _w, _h, rule, alpha, bgcolor);
}else if(isXORComp){
xorCompose(_sx, _sy, srcCM, srcRast, _dx, _dy,
dstCM, dstRast, _w, _h, xorcolor);
}else{
Raster sr = srcRast.createChild(_sx, _sy, _w, _h, 0, 0, null);
WritableRaster dr = dstRast.createWritableChild(_dx, _dy,
_w, _h, 0, 0, null);
cont.compose(sr, dr, dr);
}
}
}