diff options
Diffstat (limited to 'vcl/qa')
| -rw-r--r-- | vcl/qa/cppunit/BackendTest.cxx | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/vcl/qa/cppunit/BackendTest.cxx b/vcl/qa/cppunit/BackendTest.cxx index 0e3d9c54dd08..ba82e9d2ba9d 100644 --- a/vcl/qa/cppunit/BackendTest.cxx +++ b/vcl/qa/cppunit/BackendTest.cxx @@ -14,6 +14,7 @@ #include <tools/stream.hxx> #include <vcl/graphicfilter.hxx> #include <basegfx/matrix/b2dhommatrix.hxx> +#include <bitmapwriteaccess.hxx> #include <test/outputdevice.hxx> @@ -582,6 +583,56 @@ public: } } + // Test SalGraphics::blendBitmap() and blendAlphaBitmap() calls. + void testDrawBlendExtended() + { + // Create virtual device with alpha. + ScopedVclPtr<VirtualDevice> device + = VclPtr<VirtualDevice>::Create(DeviceFormat::DEFAULT, DeviceFormat::DEFAULT); + device->SetOutputSizePixel(Size(10, 10)); + device->SetBackground(Wallpaper(COL_WHITE)); + device->Erase(); + Bitmap bitmap(Size(5, 5), 24); + bitmap.Erase(COL_BLUE); + // No alpha, this will actually call SalGraphics::DrawBitmap(), but still check + // the alpha of the device is handled correctly. + device->DrawBitmapEx(Point(2, 2), BitmapEx(bitmap)); + exportDevice("/tmp/blend_extended_01.png", device); + CPPUNIT_ASSERT_EQUAL(COL_BLUE, device->GetPixel(Point(2, 2))); + CPPUNIT_ASSERT_EQUAL(COL_BLUE, device->GetPixel(Point(6, 6))); + // Check pixels outside of the bitmap aren't affected. + CPPUNIT_ASSERT_EQUAL(COL_WHITE, device->GetPixel(Point(1, 1))); + CPPUNIT_ASSERT_EQUAL(COL_WHITE, device->GetPixel(Point(7, 7))); + + device->Erase(); + AlphaMask alpha(Size(5, 5)); + alpha.Erase(0); // opaque + device->DrawBitmapEx(Point(2, 2), BitmapEx(bitmap, alpha)); + exportDevice("/tmp/blend_extended_02.png", device); + CPPUNIT_ASSERT_EQUAL(COL_BLUE, device->GetPixel(Point(2, 2))); + CPPUNIT_ASSERT_EQUAL(COL_BLUE, device->GetPixel(Point(6, 6))); + + device->Erase(); + alpha.Erase(255); // transparent + device->DrawBitmapEx(Point(2, 2), BitmapEx(bitmap, alpha)); + exportDevice("/tmp/blend_extended_03.png", device); + CPPUNIT_ASSERT_EQUAL(COL_WHITE, device->GetPixel(Point(2, 2))); + CPPUNIT_ASSERT_EQUAL(COL_WHITE, device->GetPixel(Point(6, 6))); + + // Skia optimizes bitmaps that have just been Erase()-ed, so explicitly + // set some pixels in the alpha to avoid this and have an actual bitmap + // as the alpha mask. + device->Erase(); + alpha.Erase(255); // transparent + BitmapWriteAccess* alphaWrite = alpha.AcquireAlphaWriteAccess(); + alphaWrite->SetPixelIndex(0, 0, 0); // opaque + alpha.ReleaseAccess(alphaWrite); + device->DrawBitmapEx(Point(2, 2), BitmapEx(bitmap, alpha)); + exportDevice("/tmp/blend_extended_04.png", device); + CPPUNIT_ASSERT_EQUAL(COL_BLUE, device->GetPixel(Point(2, 2))); + CPPUNIT_ASSERT_EQUAL(COL_WHITE, device->GetPixel(Point(6, 6))); + } + void testTdf124848() { ScopedVclPtr<VirtualDevice> device = VclPtr<VirtualDevice>::Create(DeviceFormat::DEFAULT); @@ -693,6 +744,8 @@ public: CPPUNIT_TEST(testErase); + CPPUNIT_TEST(testDrawBlendExtended); + CPPUNIT_TEST(testTdf124848); CPPUNIT_TEST(testTdf136171); |