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 "platform/geometry/IntSize.h"
30#include "platform/graphics/Image.h"
31#include "wtf/RefPtr.h"
32
33namespace blink {
34
35class PLATFORM_EXPORT GeneratedImage : public Image {
36public:
37    virtual bool currentFrameHasSingleSecurityOrigin() const OVERRIDE { return true; }
38
39    virtual void setContainerSize(const IntSize& size) OVERRIDE { m_size = size; }
40    virtual bool usesContainerSize() const OVERRIDE { return true; }
41    virtual bool hasRelativeWidth() const OVERRIDE { return true; }
42    virtual bool hasRelativeHeight() const OVERRIDE { return true; }
43    virtual void computeIntrinsicDimensions(Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio) OVERRIDE;
44
45    virtual IntSize size() const OVERRIDE { return m_size; }
46
47    // Assume that generated content has no decoded data we need to worry about
48    virtual void destroyDecodedData(bool) OVERRIDE { }
49
50protected:
51    virtual void drawPattern(GraphicsContext*, const FloatRect&,
52        const FloatSize&, const FloatPoint&, CompositeOperator,
53        const FloatRect&, WebBlendMode, const IntSize& repeatSpacing) OVERRIDE = 0;
54
55    // FIXME: Implement this to be less conservative.
56    virtual bool currentFrameKnownToBeOpaque() OVERRIDE { return false; }
57
58    GeneratedImage() { }
59
60    IntSize m_size;
61};
62
63} // namespace blink
64
65#endif
66