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| author | caryclark <caryclark@google.com> | 2016-04-04 12:48:22 -0700 |
|---|---|---|
| committer | Commit bot <commit-bot@chromium.org> | 2016-04-04 12:48:22 -0700 |
| commit | c220e59f36a1a5664fc795c801968083adda1722 (patch) | |
| tree | b0865f0cbf7701551585b5e2e8fa5944a1cd14e6 /core/fxge | |
| parent | f8a5ef3056619c1a8e7d1108ac3720c97ca8e67d (diff) | |
| download | pdfium-c220e59f36a1a5664fc795c801968083adda1722.tar.xz | |
flip sense of alpha masks
One bit bitmaps may be black and white or may be alpha masks.
Treat alpha masks as transparent/opaque instead of black/white.
R=dsinclair@chromium.org
Review URL: https://codereview.chromium.org/1858613003
Diffstat (limited to 'core/fxge')
| -rw-r--r-- | core/fxge/skia/fx_skia_device.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/core/fxge/skia/fx_skia_device.cpp b/core/fxge/skia/fx_skia_device.cpp index e61dda68d4..86d71d485b 100644 --- a/core/fxge/skia/fx_skia_device.cpp +++ b/core/fxge/skia/fx_skia_device.cpp @@ -629,6 +629,8 @@ FX_BOOL CFX_SkiaDeviceDriver::StartDIBits(const CFX_DIBSource* pSource, int rowBytes = pSource->GetPitch(); switch (pSource->GetBPP()) { case 1: { + uint8_t zero = pSource->IsAlphaMask() ? 0xFF : 0x00; + uint8_t one = zero ^ 0xFF; dst8Storage.reset(FX_Alloc2D(uint8_t, width, height)); uint8_t* dst8Pixels = dst8Storage.get(); for (int y = 0; y < height; ++y) { @@ -636,7 +638,7 @@ FX_BOOL CFX_SkiaDeviceDriver::StartDIBits(const CFX_DIBSource* pSource, static_cast<const uint8_t*>(buffer) + y * rowBytes; uint8_t* dstRow = dst8Pixels + y * width; for (int x = 0; x < width; ++x) - dstRow[x] = srcRow[x >> 3] & (1 << (~x & 0x07)) ? 0xFF : 0x00; + dstRow[x] = srcRow[x >> 3] & (1 << (~x & 0x07)) ? one : zero; } buffer = dst8Storage.get(); rowBytes = width; |