1 /* 2 * Copyright (c) 2006,2007,2008, Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 // All of the functions in this file should move to new homes and this file should be deleted. 32 33 #ifndef SkiaUtils_h 34 #define SkiaUtils_h 35 36 #include "SkMatrix.h" 37 #include "SkPath.h" 38 #include "SkXfermode.h" 39 #include "platform/PlatformExport.h" 40 #include "platform/geometry/FloatRect.h" 41 #include "platform/graphics/Color.h" 42 #include "platform/graphics/GraphicsTypes.h" 43 #include "platform/transforms/AffineTransform.h" 44 #include "wtf/MathExtras.h" 45 #include "wtf/PassRefPtr.h" 46 47 class SkCanvas; 48 class SkRegion; 49 50 namespace WebCore { 51 52 class GraphicsContext; 53 54 PassRefPtr<SkXfermode> WebCoreCompositeToSkiaComposite(CompositeOperator, blink::WebBlendMode = blink::WebBlendModeNormal); 55 56 // move this guy into SkColor.h 57 SkColor SkPMColorToColor(SkPMColor); 58 59 // Skia has problems when passed infinite, etc floats, filter them to 0. 60 inline SkScalar WebCoreFloatToSkScalar(float f) 61 { 62 return SkFloatToScalar(std::isfinite(f) ? f : 0); 63 } 64 65 inline SkScalar WebCoreDoubleToSkScalar(double d) 66 { 67 return SkDoubleToScalar(std::isfinite(d) ? d : 0); 68 } 69 70 inline SkRect WebCoreFloatRectToSKRect(const FloatRect& rect) 71 { 72 return SkRect::MakeLTRB(SkFloatToScalar(rect.x()), SkFloatToScalar(rect.y()), 73 SkFloatToScalar(rect.maxX()), SkFloatToScalar(rect.maxY())); 74 } 75 76 inline bool WebCoreFloatNearlyEqual(float a, float b) 77 { 78 return SkScalarNearlyEqual(WebCoreFloatToSkScalar(a), WebCoreFloatToSkScalar(b)); 79 } 80 81 // Computes the smallest rectangle that, which when drawn to the given canvas, 82 // will cover the same area as the source rectangle. It will clip to the canvas' 83 // clip, doing the necessary coordinate transforms. 84 // 85 // srcRect and destRect can be the same. 86 void ClipRectToCanvas(const GraphicsContext*, const SkRect& srcRect, SkRect* destRect); 87 88 // Determine if a given WebKit point is contained in a path 89 bool PLATFORM_EXPORT SkPathContainsPoint(const SkPath&, const FloatPoint&, SkPath::FillType); 90 91 SkMatrix PLATFORM_EXPORT affineTransformToSkMatrix(const AffineTransform&); 92 93 } // namespace WebCore 94 95 #endif // SkiaUtils_h 96
