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 <wtf/MathExtras.h>
37 #include "GraphicsContext.h"
38 #include "SkPath.h"
39 #include "SkXfermode.h"
40
41 class SkCanvas;
42 class SkRegion;
43
44 namespace WebCore {
45
46 SkXfermode::Mode WebCoreCompositeToSkiaComposite(CompositeOperator);
47
48 // move this guy into SkColor.h
49 SkColor SkPMColorToColor(SkPMColor);
50
51 // This should be an operator on Color
52 Color SkPMColorToWebCoreColor(SkPMColor);
53
54 // Skia has problems when passed infinite, etc floats, filter them to 0.
WebCoreFloatToSkScalar(float f)55 inline SkScalar WebCoreFloatToSkScalar(float f)
56 {
57 return SkFloatToScalar(isfinite(f) ? f : 0);
58 }
59
WebCoreDoubleToSkScalar(double d)60 inline SkScalar WebCoreDoubleToSkScalar(double d)
61 {
62 return SkDoubleToScalar(isfinite(d) ? d : 0);
63 }
64
65 // Computes the smallest rectangle that, which when drawn to the given canvas,
66 // will cover the same area as the source rectangle. It will clip to the canvas'
67 // clip, doing the necessary coordinate transforms.
68 //
69 // srcRect and destRect can be the same.
70 void ClipRectToCanvas(const SkCanvas&, const SkRect& srcRect, SkRect* destRect);
71
72 // Determine if a given WebKit point is contained in a path
73 bool SkPathContainsPoint(SkPath*, const FloatPoint&, SkPath::FillType);
74
75 // Returns a statically allocated 1x1 GraphicsContext intended for temporary
76 // operations. Please save() the state and restore() it when you're done with
77 // the context.
78 GraphicsContext* scratchContext();
79
80 } // namespace WebCore
81
82 #endif // SkiaUtils_h
83