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      1 /*
      2  * Copyright 2011, 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 InspectorCanvas_h
     27 #define InspectorCanvas_h
     28 
     29 #include "SkBounder.h"
     30 #include "SkCanvas.h"
     31 
     32 namespace WebCore {
     33 
     34 class InspectorBounder : public SkBounder {
     35     virtual bool onIRect(const SkIRect& rect)
     36     {
     37         return false;
     38     }
     39 };
     40 
     41 class InspectorCanvas : public SkCanvas {
     42 public:
     43     InspectorCanvas(SkBounder* bounder, SkPicture* picture, SkBitmap& bitmap)
     44         : SkCanvas(bitmap)
     45         , m_picture(picture)
     46         , m_hasText(false)
     47         , m_hasContent(false)
     48     {
     49         setBounder(bounder);
     50     }
     51 
     52     bool hasText() {return m_hasText;}
     53     bool hasContent() {return m_hasContent;}
     54 
     55     virtual bool clipPath(const SkPath&, SkRegion::Op) {
     56         return true;
     57     }
     58 
     59     virtual void commonDrawBitmap(const SkBitmap& bitmap,
     60                                   const SkIRect* rect,
     61                                   const SkMatrix&,
     62                                   const SkPaint&);
     63     virtual void drawBitmapRectToRect(const SkBitmap& bitmap,
     64                                       const SkRect* src,
     65                                       const SkRect& dst,
     66                                       const SkPaint* paint);
     67 
     68     virtual void drawPaint(const SkPaint& paint);
     69     virtual void drawPath(const SkPath&, const SkPaint& paint);
     70     virtual void drawPoints(PointMode, size_t,
     71                             const SkPoint [], const SkPaint& paint);
     72 
     73     virtual void drawRect(const SkRect& , const SkPaint& paint);
     74     virtual void drawSprite(const SkBitmap& , int , int ,
     75                             const SkPaint* paint = NULL);
     76 
     77     virtual void drawText(const void*, size_t byteLength, SkScalar,
     78                           SkScalar, const SkPaint& paint);
     79     virtual void drawPosText(const void* , size_t byteLength,
     80                              const SkPoint [], const SkPaint& paint);
     81     virtual void drawPosTextH(const void*, size_t byteLength,
     82                               const SkScalar [], SkScalar,
     83                               const SkPaint& paint);
     84     virtual void drawTextOnPath(const void*, size_t byteLength,
     85                                 const SkPath&, const SkMatrix*,
     86                                 const SkPaint& paint);
     87 
     88 private:
     89 
     90     // vector instructions exist, must repaint at any scale
     91     void setHasText();
     92 
     93     // painting is required
     94     void setHasContent();
     95 
     96     // rect covering entire content, don't need to use a texture if nothing else
     97     // is painted
     98     void setIsBackground(const SkPaint& paint);
     99 
    100     SkPicture* m_picture;
    101     bool m_hasText;
    102     bool m_hasContent;
    103 };
    104 
    105 } // namespace WebCore
    106 
    107 #endif // InspectorCanvas_h
    108