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LibGfx: Add Bitmap::invert()

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Helper function to invert a bitmap in-place
This commit is contained in:
MacDue 2022-05-09 00:00:13 +01:00 • committed by Linus Groh
commit 48d3db3c3d
Notes: sideshowbarker 2024-07-17 10:39:11 +09:00
2 changed files with 10 additions and 0 deletions
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8
Userland/Libraries/LibGfx/Bitmap.cpp
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@ -469,6 +469,14 @@ ErrorOr<NonnullRefPtr<Bitmap>> Bitmap::to_bitmap_backed_by_anonymous_buffer() co
return bitmap; return bitmap;
} }
void Bitmap::invert()
{
for (auto y = 0; y < height(); y++) {
for (auto x = 0; x < width(); x++)
set_pixel(x, y, get_pixel(x, y).inverted());
}
}
Bitmap::~Bitmap() Bitmap::~Bitmap()
{ {
if (m_needs_munmap) { if (m_needs_munmap) {

2
Userland/Libraries/LibGfx/Bitmap.h
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@ -121,6 +121,8 @@ public:
[[nodiscard]] ShareableBitmap to_shareable_bitmap() const; [[nodiscard]] ShareableBitmap to_shareable_bitmap() const;
void invert();
~Bitmap(); ~Bitmap();
[[nodiscard]] u8* scanline_u8(int physical_y); [[nodiscard]] u8* scanline_u8(int physical_y);