rename filterTextFlags to disableLCD

include/core/SkDevice.h

 /*
  * Copyright 2010 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkDevice_DEFINED
 #define SkDevice_DEFINED
 
@@ skipping 13 matching lines @@
 class GrRenderTarget;
 
 class SK_API SkBaseDevice : public SkRefCnt {
 public:
     SK_DECLARE_INST_COUNT(SkBaseDevice)
 
     /**
      *  Construct a new device.
     */
     SkBaseDevice();
+    explicit SkBaseDevice(const SkDeviceProperties&);
     virtual ~SkBaseDevice();
 
-    SkBaseDevice* createCompatibleDevice(const SkImageInfo&);
-
     SkMetaData& getMetaData();
 
     /**
      *  Return ImageInfo for this device. If the canvas is not backed by pixels
      *  (cpu or gpu), then the info's ColorType will be kUnknown_SkColorType.
      */
     virtual SkImageInfo imageInfo() const;
 
     /**
      *  Return the bounds of the device in the coordinate space of the root
@@ skipping 63 matching lines @@
      * possibly from SkCanvas' dtor.
      */
     virtual void onDetachFromCanvas() {
         SkASSERT(fAttachedToCanvas);
         this->unlockPixels();
 #ifdef SK_DEBUG
         fAttachedToCanvas = false;
 #endif
     };
 
+    bool shouldDisableLCD(const SkPaint&) const;
+
 protected:
     enum Usage {
        kGeneral_Usage,
        kSaveLayer_Usage,  // <! internal use only
        kImageFilter_Usage // <! internal use only
     };
 
     struct TextFlags {
         uint32_t    fFlags;     // SkPaint::getFlags()
     };
 
-    /**
-     *  Device may filter the text flags for drawing text here. If it wants to
-     *  make a change to the specified values, it should write them into the
-     *  textflags parameter (output) and return true. If the paint is fine as
-     *  is, then ignore the textflags parameter and return false.
-     */
-    virtual bool filterTextFlags(const SkPaint& paint, TextFlags*) { return false; }
+    virtual bool onShouldDisableLCD(const SkPaint&) const { return false; }
 
     /**
      *
      *  DEPRECATED: This will be removed in a future change. Device subclasses
      *  should use the matrix and clip from the SkDraw passed to draw functions.
      *
      *  Called with the correct matrix and clip before this device is drawn
      *  to using those settings. If your subclass overrides this, be sure to
      *  call through to the base class as well.
      *
@@ skipping 182 matching lines @@
      *  of 'picture'. If optimization data is available (due to an earlier
      *  'optimize' call) this entry point should make use of it and return true
      *  if all rendering has been done. If false is returned, SkCanvas will
      *  perform its own rendering pass. It is acceptable for the backend
      *  to perform some device-specific warm up tasks and then let SkCanvas
      *  perform the main rendering loop (by return false from here).
      */
     virtual bool EXPERIMENTAL_drawPicture(SkCanvas*, const SkPicture*, const SkMatrix*,
                                           const SkPaint*);
 
-    void setPixelGeometry(SkPixelGeometry geo);
+    struct CreateInfo {
+        static SkPixelGeometry AdjustGeometry(const SkImageInfo&, Usage, SkPixelGeometry geo);
 
-    struct CreateInfo {
-        CreateInfo(const SkImageInfo& info, Usage usage) : fInfo(info), fUsage(usage) {}
+        // The construct may change the pixel geometry based on usage as needed.
+        CreateInfo(const SkImageInfo& info, Usage usage, SkPixelGeometry geo)
+            : fInfo(info)
+            , fUsage(usage)
+            , fPixelGeometry(AdjustGeometry(info, usage, geo))
+        {}
 
-        SkImageInfo fInfo;
-        Usage       fUsage;
+        const SkImageInfo     fInfo;
+        const Usage           fUsage;
+        const SkPixelGeometry fPixelGeometry;
     };
+
     virtual SkBaseDevice* onCreateCompatibleDevice(const CreateInfo& cinfo) {
         return NULL;
     }
 
+    virtual void initForRootLayer(SkPixelGeometry geo);
+
 private:
     friend class SkCanvas;
     friend struct DeviceCM; //for setMatrixClip
     friend class SkDraw;
     friend class SkDrawIter;
     friend class SkDeviceFilteredPaint;
     friend class SkDeviceImageFilterProxy;
     friend class SkDeferredDevice;    // for newSurface
 
     friend class SkSurface_Raster;
 
     // used to change the backend's pixels (and possibly config/rowbytes)
     // but cannot change the width/height, so there should be no change to
     // any clip information.
     // TODO: move to SkBitmapDevice
     virtual void replaceBitmapBackendForRasterSurface(const SkBitmap&) {}
 
     virtual bool forceConservativeRasterClip() const { return false; }
 
     // just called by SkCanvas when built as a layer
     void setOrigin(int x, int y) { fOrigin.set(x, y); }
-    // just called by SkCanvas for saveLayer
-    SkBaseDevice* createCompatibleDeviceForSaveLayer(const SkImageInfo&);
-    // just called by SkCanvas for imagefilter
-    SkBaseDevice* createCompatibleDeviceForImageFilter(const SkImageInfo&);
 
     /** Causes any deferred drawing to the device to be completed.
      */
     virtual void flush() {}
 
     virtual SkImageFilter::Cache* getImageFilterCache() { return NULL; }
 
     SkIPoint    fOrigin;
     SkMetaData* fMetaData;
     SkDeviceProperties* fLeakyProperties;   // will always exist.
 
 #ifdef SK_DEBUG
     bool        fAttachedToCanvas;
 #endif
 
     typedef SkRefCnt INHERITED;
 };
 
 #endif