1/*
2 * Copyright (c) 2006,2007,2008, Google Inc. All rights reserved.
3 *
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5 * modification, are permitted provided that the following conditions are
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7 *
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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
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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,
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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
41class SkCanvas;
42class SkRegion;
43
44namespace WebCore {
45
46SkXfermode::Mode WebCoreCompositeToSkiaComposite(CompositeOperator);
47
48// move this guy into SkColor.h
49SkColor SkPMColorToColor(SkPMColor);
50
51// This should be an operator on Color
52Color SkPMColorToWebCoreColor(SkPMColor);
53
54// Skia has problems when passed infinite, etc floats, filter them to 0.
55inline SkScalar WebCoreFloatToSkScalar(float f)
56{
57    return SkFloatToScalar(isfinite(f) ? f : 0);
58}
59
60inline 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.
70void ClipRectToCanvas(const SkCanvas&, const SkRect& srcRect, SkRect* destRect);
71
72// Determine if a given WebKit point is contained in a path
73bool 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.
78GraphicsContext* scratchContext();
79
80}  // namespace WebCore
81
82#endif  // SkiaUtils_h
83