diff options
| -rw-r--r-- | src/fl_read_image_mac.cxx | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/fl_read_image_mac.cxx b/src/fl_read_image_mac.cxx index 5493ff3ca..212aaca0c 100644 --- a/src/fl_read_image_mac.cxx +++ b/src/fl_read_image_mac.cxx @@ -49,13 +49,14 @@ fl_read_image(uchar *p, // I - Pixel buffer or NULL to allocate int sh = CGBitmapContextGetHeight(src); rowBytes = CGBitmapContextGetBytesPerRow(src); delta = CGBitmapContextGetBitsPerPixel(src)/8; - if( (sw - x > w) || (sh - y > h) ) return NULL; + if( (sw - x < w) || (sh - y < h) ) return NULL; } else { // reading from current window Fl_Window *window = Fl_Window::current(); while(window->window()) window = window->window(); base = MACbitmapFromRectOfWindow(window,x,y,w,h,&delta); rowBytes = delta*w; + x = y = 0; } // Allocate the image data array as needed... int d = alpha ? 4 : 3; @@ -65,8 +66,8 @@ fl_read_image(uchar *p, // I - Pixel buffer or NULL to allocate // Copy the image from the off-screen buffer to the memory buffer. int idx, idy; // Current X & Y in image uchar *pdst, *psrc; - for (idy = 0, pdst = p; idy < h; idy ++) { - for (idx = 0, psrc = base + idy * rowBytes; idx < w; idx ++, psrc += delta, pdst += d) { + for (idy = y, pdst = p; idy < h + y; idy ++) { + for (idx = 0, psrc = base + idy * rowBytes + x * delta; idx < w; idx ++, psrc += delta, pdst += d) { pdst[0] = psrc[0]; // R pdst[1] = psrc[1]; // G pdst[2] = psrc[2]; // B |