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| 1 /* | |
| 2 * Copyright (C) 2010 Patrick Gansterer <paroga@paroga.com> | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * 1. Redistributions of source code must retain the above copyright | |
| 8 * notice, this list of conditions and the following disclaimer. | |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer in the | |
| 11 * documentation and/or other materials provided with the distribution. | |
| 12 * | |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY | |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
| 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
| 16 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY | |
| 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
| 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
| 20 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
| 22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 23 */ | |
| 24 | |
| 25 #ifndef GDIExtras_h | |
| 26 #define GDIExtras_h | |
| 27 | |
| 28 #include <windows.h> | |
| 29 | |
| 30 namespace WebCore { | |
| 31 | |
| 32 typedef BOOL (APIENTRY *AlphaBlendPointerType) (HDC hdcDest, int nXOriginDest, i
nt nYOriginDest, int nWidthDest, int nHeightDest, HDC hdcSrc, | |
| 33 int nXOriginSrc, int nYOriginSrc
, int nWidthSrc, int nHeightSrc, BLENDFUNCTION blendFunction); | |
| 34 | |
| 35 #if OS(WINCE) | |
| 36 AlphaBlendPointerType AlphaBlendPointer(); | |
| 37 #endif | |
| 38 | |
| 39 inline bool hasAlphaBlendSupport() | |
| 40 { | |
| 41 #if OS(WINCE) | |
| 42 return AlphaBlendPointer(); | |
| 43 #else | |
| 44 return true; | |
| 45 #endif | |
| 46 } | |
| 47 | |
| 48 inline bool alphaBlendIfSupported(HDC hdcDest, int nXOriginDest, int nYOriginDes
t, int nWidthDest, int nHeightDest, HDC hdcSrc, | |
| 49 int nXOriginSrc, int nYOriginSrc, int nWidthSr
c, int nHeightSrc, BLENDFUNCTION blendFunction) | |
| 50 { | |
| 51 #if OS(WINCE) | |
| 52 AlphaBlendPointerType alphaBlendPointer = AlphaBlendPointer(); | |
| 53 if (!alphaBlendPointer) | |
| 54 return false; | |
| 55 | |
| 56 alphaBlendPointer(hdcDest, nXOriginDest, nYOriginDest, nWidthDest, nHeightDe
st, hdcSrc, nXOriginSrc, nYOriginSrc, nWidthSrc, nHeightSrc, blendFunction); | |
| 57 #else | |
| 58 AlphaBlend(hdcDest, nXOriginDest, nYOriginDest, nWidthDest, nHeightDest, hdc
Src, nXOriginSrc, nYOriginSrc, nWidthSrc, nHeightSrc, blendFunction); | |
| 59 #endif | |
| 60 return true; | |
| 61 } | |
| 62 | |
| 63 } // namespace WebCore | |
| 64 | |
| 65 #endif // GDIExtras_h | |
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