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Accept fl_draw_image(buf, X,Y,W,H,D,L) with negative D and/or L arguments on the Mac OS platform.

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git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11251 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Manolo Gouy 2016-02-29 17:35:49 +00:00
parent 9f91e336a1
commit 6d34c647ca
1 changed files with 21 additions and 56 deletions
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77
src/drivers/Quartz/Fl_Quartz_Graphics_Driver_image.cxx
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@ -53,91 +53,56 @@ static void innards(const uchar *buf, int X, int Y, int W, int H,
int delta, int linedelta, int mono,
Fl_Draw_Image_Cb cb, void* userdata, CGContextRef gc)
{
if (!linedelta) linedelta = W*delta;
if (!linedelta) linedelta = W*abs(delta);
const void *array = buf;
uchar *tmpBuf = 0;
if (cb || Fl_Surface_Device::surface() != Fl_Display_Device::display_device()) {
tmpBuf = new uchar[ H*W*delta ];
tmpBuf = new uchar[ H*W*abs(delta) ];
if (cb) {
for (int i=0; i<H; i++) {
cb(userdata, 0, i, W, tmpBuf+i*W*delta);
cb(userdata, 0, i, W, tmpBuf+i*W*abs(delta));
}
} else {
uchar *p = tmpBuf;
for (int i=0; i<H; i++) {
memcpy(p, buf+i*linedelta, W*delta);
p += W*delta;
memcpy(p, buf+i*abs(linedelta), W*abs(delta));
p += W*abs(delta);
}
}
array = (void*)tmpBuf;
linedelta = W*delta;
linedelta = W*abs(delta);
}
// create an image context
CGColorSpaceRef lut = 0;
if (delta<=2)
if (abs(delta)<=2)
lut = CGColorSpaceCreateDeviceGray();
else
lut = CGColorSpaceCreateDeviceRGB();
// a release callback is necessary when the gc is a print context because the image data
// must be kept until the page is closed. Thus tmpBuf can't be deleted here. It's too early.
CGDataProviderRef src = CGDataProviderCreateWithData( 0L, array, linedelta*H,
CGDataProviderRef src = CGDataProviderCreateWithData( 0L, array, abs(linedelta)*H,
tmpBuf ? dataReleaseCB : NULL
);
CGImageRef img = CGImageCreate( W, H, 8, 8*delta, linedelta,
lut, delta&1?kCGImageAlphaNone:kCGImageAlphaLast,
CGImageRef img = CGImageCreate( W, H, 8, 8*abs(delta), abs(linedelta),
lut, abs(delta)&1?kCGImageAlphaNone:kCGImageAlphaLast,
src, 0L, false, kCGRenderingIntentDefault);
// draw the image into the destination context
if (img) {
((Fl_Quartz_Graphics_Driver*)fl_graphics_driver)->draw_CGImage(img, X,Y,W,H, 0,0,W,H);
// release all allocated resources
CGImageRelease(img);
}
CGColorSpaceRelease(lut);
CGDataProviderRelease(src);
if (img) return; // else fall through to slow mode
// following the very save (and very slow) way to write the image into the give port
CGContextSetShouldAntialias(gc, false);
if ( cb )
{
uchar *tmpBuf = new uchar[ W*4 ];
for ( int i=0; i<H; i++ )
{
uchar *src = tmpBuf;
cb( userdata, 0, i, W, tmpBuf );
for ( int j=0; j<W; j++ )
{
if ( mono )
{ fl_color( src[0], src[0], src[0] ); }
else
{ fl_color( src[0], src[1], src[2] ); }
CGContextMoveToPoint(gc, X+j, Y+i);
CGContextAddLineToPoint(gc, X+j, Y+i);
CGContextStrokePath(gc);
src+=delta;
}
// draw the image into the destination context
if (img) {
CGContextTranslateCTM(gc, X, Y);
if (linedelta < 0) {
CGContextTranslateCTM(gc, 0, H-1);
CGContextScaleCTM(gc, 1, -1);
}
delete[] tmpBuf;
}
else
{
for ( int i=0; i<H; i++ )
{
const uchar *src = buf+i*linedelta;
for ( int j=0; j<W; j++ )
{
if ( mono )
fl_color( src[0], src[0], src[0] );
else
fl_color( src[0], src[1], src[2] );
CGContextMoveToPoint(gc, X+j, Y+i);
CGContextAddLineToPoint(gc, X+j, Y+i);
CGContextStrokePath(gc);
src += delta;
}
if (delta < 0) {
CGContextTranslateCTM(gc, W-1, 0);
CGContextScaleCTM(gc, -1, 1);
}
((Fl_Quartz_Graphics_Driver*)fl_graphics_driver)->draw_CGImage(img, 0,0,W,H, 0,0,W,H);
CGImageRelease(img);
}
CGContextSetShouldAntialias(gc, true);
}
void Fl_Quartz_Graphics_Driver::draw_image(const uchar* buf, int x, int y, int w, int h, int d, int l){