1/*
2 * Copyright (C) 2004, 2005, 2006, 2013 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 PDFDocumentImage_h
27#define PDFDocumentImage_h
28
29#include "AffineTransform.h"
30#include "FloatRect.h"
31#include "GraphicsTypes.h"
32#include "Image.h"
33
34#if USE(CG)
35
36#if PLATFORM(MAC) && !PLATFORM(IOS)
37#define WTF_USE_PDFKIT_FOR_PDFDOCUMENTIMAGE 1
38#endif
39
40typedef struct CGPDFDocument *CGPDFDocumentRef;
41OBJC_CLASS PDFDocument;
42
43namespace WebCore {
44
45class GraphicsContext;
46class ImageBuffer;
47
48class PDFDocumentImage FINAL : public Image {
49public:
50    static PassRefPtr<PDFDocumentImage> create(ImageObserver* observer)
51    {
52        return adoptRef(new PDFDocumentImage(observer));
53    }
54
55private:
56    PDFDocumentImage(ImageObserver*);
57    virtual ~PDFDocumentImage();
58
59    virtual bool isPDFDocumentImage() const OVERRIDE { return true; }
60
61    virtual String filenameExtension() const OVERRIDE;
62
63    virtual bool hasSingleSecurityOrigin() const OVERRIDE { return true; }
64
65    virtual bool dataChanged(bool allDataReceived) OVERRIDE;
66
67    virtual void destroyDecodedData(bool /*destroyAll*/ = true) OVERRIDE;
68    virtual unsigned decodedSize() const OVERRIDE;
69
70    virtual void computeIntrinsicDimensions(Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio) OVERRIDE;
71    virtual IntSize size() const OVERRIDE;
72
73    virtual void draw(GraphicsContext*, const FloatRect& dstRect, const FloatRect& srcRect, ColorSpace styleColorSpace, CompositeOperator, BlendMode) OVERRIDE;
74
75    // FIXME: Implement this to be less conservative.
76    virtual bool currentFrameKnownToBeOpaque() OVERRIDE { return false; }
77
78    void createPDFDocument();
79    void computeBoundsForCurrentPage();
80    unsigned pageCount() const;
81    void drawPDFPage(GraphicsContext*);
82
83    void updateCachedImageIfNeeded(GraphicsContext*, const FloatRect& dstRect, const FloatRect& srcRect);
84    bool cacheParametersMatch(GraphicsContext*, const FloatRect& dstRect, const FloatRect& srcRect) const;
85
86#if USE(PDFKIT_FOR_PDFDOCUMENTIMAGE)
87    RetainPtr<PDFDocument> m_document;
88#else
89    RetainPtr<CGPDFDocumentRef> m_document;
90#endif
91
92    OwnPtr<ImageBuffer> m_cachedImageBuffer;
93    AffineTransform m_cachedTransform;
94    FloatSize m_cachedDestinationSize;
95    FloatRect m_cachedSourceRect;
96    size_t m_cachedBytes;
97
98    FloatRect m_mediaBox;
99    FloatRect m_cropBox;
100    int m_rotationDegrees; // Can only be 0, 90, 180, or 270 degrees.
101    bool m_hasPage;
102};
103
104}
105
106#endif // USE(CG)
107
108#endif // PDFDocumentImage_h
109