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| author | Bo Xu <bo_xu@foxitsoftware.com> | 2014-11-10 13:34:05 -0800 |
|---|---|---|
| committer | Bo Xu <bo_xu@foxitsoftware.com> | 2014-11-10 13:34:05 -0800 |
| commit | 6cb31035547d30b7d1bec6375a4d2c86e6aa17cf (patch) | |
| tree | c25962df2587125958472bd7222ed9bb794804e3 /core/src | |
| parent | 09a22a6cd9758e630202d1730aaa8fd7898c91cb (diff) | |
| download | pdfium-6cb31035547d30b7d1bec6375a4d2c86e6aa17cf.tar.xz | |
Fix a bug when performing StretchDIBits on bit mask
BUG=401988
R=vitalybuka@chromium.org
Review URL: https://codereview.chromium.org/618073003
Diffstat (limited to 'core/src')
| -rw-r--r-- | core/src/fxge/win32/fx_win32_device.cpp | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/core/src/fxge/win32/fx_win32_device.cpp b/core/src/fxge/win32/fx_win32_device.cpp index eee4fd8285..d82102462a 100644 --- a/core/src/fxge/win32/fx_win32_device.cpp +++ b/core/src/fxge/win32/fx_win32_device.cpp @@ -570,8 +570,32 @@ FX_BOOL CGdiDeviceDriver::GDI_StretchBitMask(const CFX_DIBitmap* pBitmap1, int d } bmi.bmiColors[0] = 0xffffff; bmi.bmiColors[1] = 0; - ::StretchDIBits(m_hDC, dest_left, dest_top, dest_width, dest_height, - 0, 0, width, height, pBitmap->GetBuffer(), (BITMAPINFO*)&bmi, DIB_RGB_COLORS, SRCAND); + + HBRUSH hPattern = CreateSolidBrush(bitmap_color & 0xffffff);
+ HBRUSH hOld = (HBRUSH)SelectObject(m_hDC, hPattern);
+
+
+ // In PDF, when image mask is 1, use device bitmap; when mask is 0, use brush bitmap.
+ // A complete list of the boolen operations is as follows:
+
+ /* P(bitmap_color) S(ImageMask) D(DeviceBitmap) Result
+ * 0 0 0 0
+ * 0 0 1 0
+ * 0 1 0 0
+ * 0 1 1 1
+ * 1 0 0 1
+ * 1 0 1 1
+ * 1 1 0 0
+ * 1 1 1 1
+ */
+ // The boolen codes is B8. Based on http://msdn.microsoft.com/en-us/library/aa932106.aspx, the ROP3 code is 0xB8074A
+
+ ::StretchDIBits(m_hDC, dest_left, dest_top, dest_width, dest_height,
+ 0, 0, width, height, pBitmap->GetBuffer(), (BITMAPINFO*)&bmi, DIB_RGB_COLORS, 0xB8074A);
+
+ SelectObject(m_hDC, hOld);
+ DeleteObject(hPattern); + return TRUE; } BOOL CGdiDeviceDriver::GetClipBox(FX_RECT* pRect) |