Added a virtual to SkBounder, called by text, that passes

the glyph's ID as well as its bounds. Made the universal
doIRect() non-abstract so that a child class can override
either the general flavor or the text flavor.



git-svn-id: http://skia.googlecode.com/svn/trunk@468 2bbb7eff-a529-9590-31e7-b0007b416f81

include/core/SkBounder.h

@@ -38,7 +38,7 @@ public:
        Returns the result from onIRect.
     */
     bool doIRect(const SkIRect&);
-
+    bool doIRect(const SkIRect& , uint16_t glyphID);
 protected:
     /** Override in your subclass. This is called with the device bounds of an
         object (text, geometry, image) just before it is drawn. If your method
@@ -46,7 +46,16 @@ protected:
         returns true, drawing continues. The bounds your method receives have already
         been transformed in to device coordinates, and clipped to the current clip.
     */
-    virtual bool onIRect(const SkIRect&) = 0;
+    virtual bool onIRect(const SkIRect&) {
+        return false;
+    }
+
+    /** Optionally, override in your subclass to receive the glyph ID when
+        text drawing supplies the device bounds of the object.
+    */
+    virtual bool onIRect(const SkIRect& r, uint16_t glyphID) {
+        return onIRect(r);
+    }
 
     /** Called after each shape has been drawn. The default implementation does
         nothing, but your override could use this notification to signal itself

src/core/SkDraw.cpp

@@ -1366,7 +1366,7 @@ static void D1G_Bounder(const SkDraw1Glyph& state,
             }
 		}
 		
-		if (state.fBounder->doIRect(cr)) {
+		if (state.fBounder->doIRect(cr, glyph.getGlyphID())) {
 			mask.fRowBytes = glyph.rowBytes();
 			mask.fFormat = static_cast<SkMask::Format>(glyph.fMaskFormat);
 			mask.fImage = (uint8_t*)aa;
@@ -2244,6 +2244,11 @@ bool SkBounder::doIRect(const SkIRect& r) {
     return rr.intersect(fClip->getBounds(), r) && this->onIRect(rr);
 }
 
+bool SkBounder::doIRect(const SkIRect& r, uint16_t glyphID) {
+    SkIRect    rr;
+    return rr.intersect(fClip->getBounds(), r) && this->onIRect(rr, glyphID);
+}
+
 bool SkBounder::doHairline(const SkPoint& pt0, const SkPoint& pt1,
                            const SkPaint& paint) {
     SkIRect     r;