allow pictures to have a full bounds

src/core/SkPictureRecorder.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkData.h"
 #include "SkLayerInfo.h"
 #include "SkPictureRecorder.h"
 #include "SkRecord.h"
 #include "SkRecordDraw.h"
 #include "SkRecorder.h"
 #include "SkRecordOpts.h"
 #include "SkTypes.h"
 
 SkPictureRecorder::SkPictureRecorder() {}
 
 SkPictureRecorder::~SkPictureRecorder() {}
 
-SkCanvas* SkPictureRecorder::beginRecording(SkScalar width, SkScalar height,
+SkCanvas* SkPictureRecorder::beginRecording(const SkRect& cullRect,
                                             SkBBHFactory* bbhFactory /* = NULL */,
                                             uint32_t recordFlags /* = 0 */) {
+    fCullRect = cullRect;
     fFlags = recordFlags;
-    fCullWidth = width;
-    fCullHeight = height;
 
     if (bbhFactory) {
-        fBBH.reset((*bbhFactory)(width, height));
+        fBBH.reset((*bbhFactory)(cullRect));
         SkASSERT(fBBH.get());
     }
 
     fRecord.reset(SkNEW(SkRecord));
-    fRecorder.reset(SkNEW_ARGS(SkRecorder, (fRecord.get(), width, height)));
+    fRecorder.reset(SkNEW_ARGS(SkRecorder, (fRecord.get(), cullRect)));
     return this->getRecordingCanvas();
 }
 
 SkCanvas* SkPictureRecorder::getRecordingCanvas() {
     return fRecorder.get();
 }
 
 SkPicture* SkPictureRecorder::endRecording() {
     // TODO: delay as much of this work until just before first playback?
     SkRecordOptimize(fRecord);
 
     SkAutoTUnref<SkLayerInfo> saveLayerData;
 
     if (fBBH && (fFlags & kComputeSaveLayerInfo_RecordFlag)) {
         SkPicture::AccelData::Key key = SkLayerInfo::ComputeKey();
 
         saveLayerData.reset(SkNEW_ARGS(SkLayerInfo, (key)));
     }
 
     if (fBBH.get()) {
-        SkRect cullRect = SkRect::MakeWH(fCullWidth, fCullHeight);
-
         if (saveLayerData) {
-            SkRecordComputeLayers(cullRect, *fRecord, fBBH.get(), saveLayerData);
+            SkRecordComputeLayers(fCullRect, *fRecord, fBBH.get(), saveLayerData);
         } else {
-            SkRecordFillBounds(cullRect, *fRecord, fBBH.get());
+            SkRecordFillBounds(fCullRect, *fRecord, fBBH.get());
         }
     }
 
     // TODO: we should remember these from our caller
     SkBBHFactory* factory = NULL;
     uint32_t recordFlags = 0;
     SkAutoDataUnref drawablePicts(fRecorder->newDrawableSnapshot(factory, recordFlags));
-    SkPicture* pict = SkNEW_ARGS(SkPicture, (fCullWidth, fCullHeight, fRecord.detach(),
+    SkPicture* pict = SkNEW_ARGS(SkPicture, (fCullRect, fRecord.detach(),
                                              drawablePicts, fBBH.get()));
 
     if (saveLayerData) {
         pict->EXPERIMENTAL_addAccelData(saveLayerData);
     }
 
     return pict;
 }
 
 void SkPictureRecorder::partialReplay(SkCanvas* canvas) const {
     if (NULL == canvas) {
         return;
     }
 
     int drawableCount = 0;
     SkRecordDraw(*fRecord, canvas, NULL, drawableCount, NULL/*bbh*/, NULL/*callback*/);
 }