GP<GBitmap>
JB2Image::get_bitmap(int subsample, int align) const
{
if (width==0 || height==0)
G_THROW( ERR_MSG("JB2Image.cant_create") );
int swidth = (width + subsample - 1) / subsample;
int sheight = (height + subsample - 1) / subsample;
int border = ((swidth + align - 1) & ~(align - 1)) - swidth;
GP<GBitmap> bm = GBitmap::create(sheight, swidth, border);
bm->set_grays(1+subsample*subsample);
for (int blitno = 0; blitno < get_blit_count(); blitno++)
{
const JB2Blit *pblit = get_blit(blitno);
const JB2Shape &pshape = get_shape(pblit->shapeno);
if (pshape.bits)
bm->blit(pshape.bits, pblit->left, pblit->bottom, subsample);
}
return bm;
}
GP<GBitmap>
JB2Image::get_bitmap(const GRect &rect, int subsample, int align, int dispy) const
{
if (width==0 || height==0)
G_THROW( ERR_MSG("JB2Image.cant_create") );
int rxmin = rect.xmin * subsample;
int rymin = rect.ymin * subsample;
int swidth = rect.width();
int sheight = rect.height();
int border = ((swidth + align - 1) & ~(align - 1)) - swidth;
GP<GBitmap> bm = GBitmap::create(sheight, swidth, border);
bm->set_grays(1+subsample*subsample);
for (int blitno = 0; blitno < get_blit_count(); blitno++)
{
const JB2Blit *pblit = get_blit(blitno);
const JB2Shape &pshape = get_shape(pblit->shapeno);
if (pshape.bits)
bm->blit(pshape.bits, pblit->left-rxmin, pblit->bottom-rymin+dispy, subsample);
}
return bm;
}
