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      1 /*
      2  * Copyright 2008, 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 PictureSet_h
     27 #define PictureSet_h
     28 
     29 #define PICTURE_SET_DUMP 0
     30 #define PICTURE_SET_DEBUG 0
     31 #define PICTURE_SET_VALIDATE 0
     32 
     33 #if PICTURE_SET_DEBUG
     34 #define DBG_SET_LOG(message) LOGD("%s %s", __FUNCTION__, message)
     35 #define DBG_SET_LOGD(format, ...) LOGD("%s " format, __FUNCTION__, __VA_ARGS__)
     36 #define DEBUG_SET_UI_LOGD(...) LOGD(__VA_ARGS__)
     37 #else
     38 #define DBG_SET_LOG(message) ((void)0)
     39 #define DBG_SET_LOGD(format, ...) ((void)0)
     40 #define DEBUG_SET_UI_LOGD(...) ((void)0)
     41 #endif
     42 
     43 #include "jni.h"
     44 #include "SkRegion.h"
     45 #include <wtf/Vector.h>
     46 #include <wtf/HashMap.h>
     47 
     48 // #define FAST_PICTURESET // use a hierarchy of pictures
     49 
     50 class SkCanvas;
     51 class SkPicture;
     52 class SkIRect;
     53 
     54 namespace android {
     55 
     56 #ifdef FAST_PICTURESET
     57     struct BucketPicture {
     58         SkPicture* mPicture;
     59         SkIRect mArea;
     60         SkIRect mRealArea;
     61         bool mBase;
     62     };
     63 
     64     typedef std::pair<int, int> BucketPosition;
     65     typedef WTF::Vector<BucketPicture> Bucket;
     66     typedef WTF::HashMap<BucketPosition , Bucket* > BucketMap;
     67 #endif
     68 
     69     class PictureSet {
     70     public:
     71         PictureSet();
     72         PictureSet(const PictureSet& src) { set(src); }
     73         PictureSet(SkPicture* picture);
     74         virtual ~PictureSet();
     75 
     76 #ifdef FAST_PICTURESET
     77         void displayBucket(Bucket* bucket);
     78         void displayBuckets();
     79         WTF::Vector<Bucket*>* bucketsToUpdate() { return &mUpdatedBuckets; }
     80         Bucket* getBucket(int x, int y);
     81         void addToBucket(Bucket* bucket, int dx, int dy, SkIRect& rect);
     82         void gatherBucketsForArea(WTF::Vector<Bucket*>& list, const SkIRect& rect);
     83         void splitAdd(const SkIRect& rect);
     84 #endif
     85 
     86         void add(const SkRegion& area, SkPicture* picture,
     87             uint32_t elapsed, bool split);
     88 
     89         // Update mWidth/mHeight, and adds any additional inval region
     90         void setDimensions(int width, int height, SkRegion* inval = 0);
     91         void clear();
     92         bool draw(SkCanvas* );
     93         static PictureSet* GetNativePictureSet(JNIEnv* env, jobject jpic);
     94         int height() const { return mHeight; }
     95         bool isEmpty() const; // returns true if empty or only trivial content
     96         void set(const PictureSet& );
     97 
     98 #ifdef FAST_PICTURESET
     99 #else
    100         void add(const SkRegion& area, SkPicture* picture,
    101             uint32_t elapsed, bool split, bool empty);
    102         const SkIRect& bounds(size_t i) const {
    103             return mPictures[i].mArea.getBounds(); }
    104         bool reuseSubdivided(const SkRegion& );
    105         void setPicture(size_t i, SkPicture* p);
    106         void setDrawTimes(const PictureSet& );
    107         size_t size() const { return mPictures.size(); }
    108         void split(PictureSet* result) const;
    109         bool upToDate(size_t i) const { return mPictures[i].mPicture != NULL; }
    110 #endif
    111         int width() const { return mWidth; }
    112         void dump(const char* label) const;
    113         bool validate(const char* label) const;
    114     private:
    115         bool emptyPicture(SkPicture* ) const; // true if no text, images, paths
    116 
    117 #ifdef FAST_PICTURESET
    118         BucketMap mBuckets;
    119         WTF::Vector<Bucket*> mUpdatedBuckets;
    120         int mBucketSizeX;
    121         int mBucketSizeY;
    122         int mBucketCountX;
    123         int mBucketCountY;
    124 #else
    125         struct Pictures {
    126             SkRegion mArea;
    127             SkPicture* mPicture;
    128             SkIRect mUnsplit;
    129             uint32_t mElapsed;
    130             bool mSplit : 8;
    131             bool mWroteElapsed : 8;
    132             bool mBase : 8; // true if nothing is drawn underneath this
    133             bool mEmpty : 8; // true if the picture only draws white
    134         };
    135         void add(const Pictures* temp);
    136         WTF::Vector<Pictures> mPictures;
    137 #endif
    138         float mBaseArea;
    139         float mAdditionalArea;
    140         int mHeight;
    141         int mWidth;
    142     };
    143 }
    144 
    145 #endif
    146