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      1 /*
      2  * Copyright 2006, The Android Open Source Project
      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  *  * Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  *  * 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 THE COPYRIGHT HOLDERS ``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 THE COPYRIGHT OWNER 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 SkBitmapRef_DEFINED
     27 #define SkBitmapRef_DEFINED
     28 
     29 #include "SkRefCnt.h"
     30 #include "SkBitmap.h"
     31 
     32 class SkBitmapRef : public SkRefCnt {
     33 public:
     34     SkBitmapRef() : fOrigWidth(0), fOrigHeight(0), fAccessed(false) {}
     35     explicit SkBitmapRef(const SkBitmap& src)
     36         : fBitmap(src),
     37           fOrigWidth(src.width()),
     38           fOrigHeight(src.height()),
     39           fAccessed(false) {}
     40 
     41     const SkBitmap& bitmap() const { return fBitmap; }
     42     SkBitmap& bitmap() { return fBitmap; }
     43 
     44     int origWidth() const { return fOrigWidth; }
     45     int origHeight() const { return fOrigHeight; }
     46 
     47     void setOrigSize(int width, int height) {
     48         fOrigWidth = width;
     49         fOrigHeight = height;
     50     }
     51     // return true if this is not the first access
     52     // mark it true so all subsequent calls return true
     53     bool accessed() { bool result = fAccessed;
     54         fAccessed = true; return result; }
     55 
     56 private:
     57     SkBitmap fBitmap;
     58     int      fOrigWidth, fOrigHeight;
     59     bool     fAccessed;
     60 };
     61 
     62 #endif
     63