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      1 /*
      2  * Copyright (C) 2006, 2007, 2008 Apple Computer, Inc.  All rights reserved.
      3  * Copyright (C) 2008 Eric Seidel <eric (at) webkit.org>
      4  * Copyright (C) 2007-2008 Torch Mobile, Inc.
      5  * Copyright (C) 2013 Google, Inc. All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     17  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     20  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     21  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     22  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     23  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     24  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef Pattern_h
     30 #define Pattern_h
     31 
     32 #include "SkShader.h"
     33 #include "platform/PlatformExport.h"
     34 #include "platform/graphics/Image.h"
     35 #include "platform/transforms/AffineTransform.h"
     36 
     37 #include "wtf/PassRefPtr.h"
     38 #include "wtf/RefCounted.h"
     39 #include "wtf/RefPtr.h"
     40 
     41 namespace blink {
     42 
     43 class PLATFORM_EXPORT Pattern : public RefCounted<Pattern> {
     44 public:
     45     enum RepeatMode {
     46         RepeatModeX    = 1 << 0,
     47         RepeatModeY    = 1 << 1,
     48 
     49         RepeatModeNone = 0,
     50         RepeatModeXY   = RepeatModeX | RepeatModeY
     51     };
     52 
     53     static PassRefPtr<Pattern> createBitmapPattern(PassRefPtr<Image> tileImage,
     54         RepeatMode = RepeatModeXY);
     55     ~Pattern();
     56 
     57     SkShader* shader();
     58 
     59     void setPatternSpaceTransform(const AffineTransform& patternSpaceTransformation);
     60 
     61 private:
     62     Pattern(PassRefPtr<Image>, RepeatMode);
     63 
     64     RefPtr<NativeImageSkia> m_tileImage;
     65     RepeatMode m_repeatMode;
     66     AffineTransform m_patternSpaceTransformation;
     67     RefPtr<SkShader> m_pattern;
     68     int m_externalMemoryAllocated;
     69 };
     70 
     71 } // namespace blink
     72 
     73 #endif
     74