Add SkCanvas::drawPosTextBounded.

src/core/SkBBoxRecord.cpp

 
 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBBoxRecord.h"
 
@@ skipping 158 matching lines @@
     // pad on left and right by half of max vertical glyph extents
     SkScalar pad = (metrics.fTop - metrics.fBottom) / 2;
     bbox.fLeft += pad;
     bbox.fRight -= pad;
 
     if (this->transformBounds(bbox, &paint)) {
         INHERITED::drawPosText(text, byteLength, pos, paint);
     }
 }
 
+void SkBBoxRecord::drawPosTextBounded(const void* text, size_t byteLength,
+                                      const SkPoint pos[], const SkRect& bbox,
+                                      const SkPaint& paint) {

[tomhudson, 2013/08/07 15:48:39]

Is it worth putting in an SkASSERT here that the bbox passed in matches the bbox
that would be computed by drawPosText?

+    if (this->transformBounds(bbox, &paint)) {
+        INHERITED::drawPosText(text, byteLength, pos, paint);
+    }
+}
+
 void SkBBoxRecord::drawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[],
                                 SkScalar constY, const SkPaint& paint) {
     SkRect bbox;
     size_t numChars = paint.countText(text, byteLength);
     if (numChars > 0) {
         bbox.fLeft  = xpos[0];
         bbox.fRight = xpos[numChars - 1];
         // if we had a guarantee that these will be monotonically increasing, this could be sped up
         for (size_t i = 1; i < numChars; ++i) {
             if (xpos[i] < bbox.fLeft) {
@@ skipping 86 matching lines @@
     }
 
     if (!outBounds.isEmpty() && !this->quickReject(outBounds)) {
         this->getTotalMatrix().mapRect(&outBounds);
         this->handleBBox(outBounds);
         return true;
     }
 
     return false;
 }