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LibGfx: Fix partial loading of tall and interlaced PNG files

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The function stopped copying data from a subimage when the _y_ value
exceeded the image _width_ value, resulting in an incomplete image.
This commit is contained in:
Karol Kosek 2023-06-06 18:39:50 +02:00 • committed by Andreas Kling
parent b8c847a3cd
commit 970a3ef4d8
1 changed files with 1 additions and 1 deletions
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2
Userland/Libraries/LibGfx/ImageFormats/PNGLoader.cpp
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@ -850,7 +850,7 @@ static ErrorOr<void> decode_adam7_pass(PNGLoadingContext& context, Streamer& str
// Copy the subimage data into the main image according to the pass pattern
for (int y = 0, dy = adam7_starty[pass]; y < subimage_context.height && dy < context.height; ++y, dy += adam7_stepy[pass]) {
for (int x = 0, dx = adam7_startx[pass]; x < subimage_context.width && dy < context.width; ++x, dx += adam7_stepx[pass]) {
for (int x = 0, dx = adam7_startx[pass]; x < subimage_context.width && dx < context.width; ++x, dx += adam7_stepx[pass]) {
context.bitmap->set_pixel(dx, dy, subimage_context.bitmap->get_pixel(x, y));
}
}