GeneratedImage.h revision 635860845790a19bf50bbc51ba8fb66a96dde068 
1/*
2 * Copyright (C) 2008 Apple Computer, 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
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 COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef GeneratedImage_h
27#define GeneratedImage_h
28
29#include "Image.h"
30
31#include "Generator.h"
32#include "IntSize.h"
33#include <wtf/RefPtr.h>
34
35namespace WebCore {
36
37class GeneratedImage : public Image {
38public:
39    static PassRefPtr<GeneratedImage> create(PassRefPtr<Generator> generator, const IntSize& size)
40    {
41        return adoptRef(new GeneratedImage(generator, size));
42    }
43    virtual ~GeneratedImage() {}
44
45    virtual bool hasSingleSecurityOrigin() const { return true; }
46
47    // These are only used for SVGGeneratedImage right now
48    virtual void setContainerSize(const IntSize& size) { m_size = size; }
49    virtual bool usesContainerSize() const { return true; }
50    virtual bool hasRelativeWidth() const { return true; }
51    virtual bool hasRelativeHeight() const { return true; }
52
53    virtual IntSize size() const { return m_size; }
54
55    // Assume that generated content has no decoded data we need to worry about
56    virtual void destroyDecodedData(bool /*destroyAll*/ = true) { }
57    virtual unsigned decodedSize() const { return 0; }
58
59protected:
60    virtual void draw(GraphicsContext*, const FloatRect& dstRect, const FloatRect& srcRect, CompositeOperator);
61    virtual void drawPattern(GraphicsContext*, const FloatRect& srcRect, const TransformationMatrix& patternTransform,
62                             const FloatPoint& phase, CompositeOperator, const FloatRect& destRect);
63
64    GeneratedImage(PassRefPtr<Generator> generator, const IntSize& size)
65        : m_generator(generator)
66        , m_size(size)
67    {
68    }
69
70    RefPtr<Generator> m_generator;
71    IntSize m_size;
72};
73
74}
75
76#endif
77