Minor changes to GrFontCache system

src/gpu/GrAtlas.h

 
 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrAtlas_DEFINED
 #define GrAtlas_DEFINED
@@ skipping 15 matching lines @@
 // GrAtlas can request a new GrPlot via GrAtlasMgr::addToAtlas().
 //
 // If all GrPlots are allocated, the replacement strategy is up to the client. The drawToken is
 // available to ensure that all draw calls are finished for that particular GrPlot.
 // GrAtlasMgr::removeUnusedPlots() will free up any finished plots for a given GrAtlas.
 
 class GrPlot {
 public:
     SK_DECLARE_INTERNAL_LLIST_INTERFACE(GrPlot);
 
-    int getOffsetX() const { return fOffset.fX; }
-    int getOffsetY() const { return fOffset.fY; }
-
     GrTexture* texture() const { return fTexture; }
 
     bool addSubImage(int width, int height, const void*, GrIPoint16*);
 
     GrDrawTarget::DrawToken drawToken() const { return fDrawToken; }
     void setDrawToken(GrDrawTarget::DrawToken draw) { fDrawToken = draw; }
 
     void resetRects();
 
 private:
     GrPlot();
     ~GrPlot(); // does not try to delete the fNext field
+    void init(GrAtlasMgr* mgr, int offX, int offY, int width, int height, size_t bpp);
 
     // for recycling
     GrDrawTarget::DrawToken fDrawToken;
 
     GrTexture*              fTexture;
     GrRectanizer*           fRects;
     GrAtlasMgr*             fAtlasMgr;
-    GrIPoint16              fOffset;
+    GrIPoint16              fOffset;        // the offset of the plot in the backing texture
     size_t                  fBytesPerPixel;
 
     friend class GrAtlasMgr;
 };
 
 typedef SkTInternalLList<GrPlot> GrPlotList;
 
 class GrAtlasMgr {
 public:
-    GrAtlasMgr(GrGpu*, GrPixelConfig);
+    GrAtlasMgr(GrGpu*, GrPixelConfig, 
+               int backingTextureWidth, int backingTextureHeight,
+               int numPlotsX, int numPlotsY);
     ~GrAtlasMgr();
 
     // add subimage of width, height dimensions to atlas
     // returns the containing GrPlot and location relative to the backing texture
     GrPlot* addToAtlas(GrAtlas*, int width, int height, const void*, GrIPoint16*);
 
     // remove reference to this plot
     bool removePlot(GrAtlas* atlas, const GrPlot* plot);
 
     // get a plot that's not being used by the current draw
     // this allows us to overwrite this plot without flushing
     GrPlot* getUnusedPlot();
 
     GrTexture* getTexture() const {
         return fTexture;
     }
 
 private:
     void moveToHead(GrPlot* plot);
 
     GrGpu*        fGpu;
     GrPixelConfig fPixelConfig;
     GrTexture*    fTexture;
+    int           fBackingTextureWidth;
+    int           fBackingTextureHeight;
+    int           fNumPlotsX;
+    int           fNumPlotsY;
 
     // allocated array of GrPlots
     GrPlot*       fPlotArray;
     // LRU list of GrPlots
     GrPlotList    fPlotList;
 };
 
 class GrAtlas {
 public:
     GrAtlas() { }
     ~GrAtlas() { }
 
     bool isEmpty() { return 0 == fPlots.count(); }
 
 private:
     SkTDArray<GrPlot*> fPlots;
 
     friend class GrAtlasMgr;
 };
 
 #endif