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Image::BitmapData: Update getters to allow for negative lineStride

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reuk 2025-05-15 19:22:06 +01:00
parent fb4159c436
commit 9f4aef4053
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1 changed files with 8 additions and 2 deletions
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10
modules/juce_graphics/images/juce_Image.h
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@ -343,13 +343,19 @@ public:
The coordinate you provide here isn't checked, so it's the caller's responsibility to make
sure it's not out-of-range.
*/
inline uint8* getLinePointer (int y) const noexcept { return data + (size_t) y * (size_t) lineStride; }
inline uint8* getLinePointer (int y) const noexcept
{
return data + (ptrdiff_t) y * (ptrdiff_t) lineStride;
}
/** Returns a pointer to a pixel in the image.
The coordinates you give here are not checked, so it's the caller's responsibility to make sure they're
not out-of-range.
*/
inline uint8* getPixelPointer (int x, int y) const noexcept { return data + (size_t) y * (size_t) lineStride + (size_t) x * (size_t) pixelStride; }
inline uint8* getPixelPointer (int x, int y) const noexcept
{
return data + (ptrdiff_t) y * (ptrdiff_t) lineStride + (ptrdiff_t) x * (ptrdiff_t) pixelStride;
}
/** Returns the colour of a given pixel.
For performance reasons, this won't do any bounds-checking on the coordinates, so it's the caller's