1/*
2 * Copyright (C) 2008, 2013 Apple 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 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 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 "FloatSize.h"
30#include "Image.h"
31
32#include <wtf/RefPtr.h>
33
34namespace WebCore {
35
36class GeneratedImage : public Image {
37public:
38    virtual bool hasSingleSecurityOrigin() const override { return true; }
39
40    virtual void setContainerSize(const FloatSize& size) override { m_size = size; }
41    virtual bool usesContainerSize() const override { return true; }
42    virtual bool hasRelativeWidth() const override { return true; }
43    virtual bool hasRelativeHeight() const override { return true; }
44    virtual void computeIntrinsicDimensions(Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio) override;
45
46    virtual FloatSize size() const override { return m_size; }
47
48    // Assume that generated content has no decoded data we need to worry about
49    virtual void destroyDecodedData(bool /*destroyAll*/ = true) override { }
50
51protected:
52    virtual void draw(GraphicsContext*, const FloatRect& dstRect, const FloatRect& srcRect, ColorSpace styleColorSpace, CompositeOperator, BlendMode, ImageOrientationDescription) override = 0;
53    virtual void drawPattern(GraphicsContext*, const FloatRect& srcRect, const AffineTransform& patternTransform,
54        const FloatPoint& phase, ColorSpace styleColorSpace, CompositeOperator, const FloatRect& destRect, BlendMode) override = 0;
55
56    // FIXME: Implement this to be less conservative.
57    virtual bool currentFrameKnownToBeOpaque() override { return false; }
58
59    GeneratedImage() { }
60
61private:
62    FloatSize m_size;
63};
64
65}
66
67#endif
68