Culling API

src/core/SkCanvas.cpp

 
 /*
  * Copyright 2008 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.
  */
 
 
 #include "SkCanvas.h"
@@ skipping 472 matching lines @@
 ////////////////////////////////////////////////////////////////////////////
 
 SkBaseDevice* SkCanvas::init(SkBaseDevice* device) {
     fBounder = NULL;
     fCachedLocalClipBounds.setEmpty();
     fCachedLocalClipBoundsDirty = true;
     fAllowSoftClip = true;
     fAllowSimplifyClip = false;
     fDeviceCMDirty = false;
     fSaveLayerCount = 0;
+    fCullCount = 0;
     fMetaData = NULL;
 
     fMCRec = (MCRec*)fMCStack.push_back();
     new (fMCRec) MCRec(NULL, 0);
 
     fMCRec->fLayer = SkNEW_ARGS(DeviceCM, (NULL, 0, 0, NULL, NULL));
     fMCRec->fTopLayer = fMCRec->fLayer;
     fMCRec->fNext = NULL;
 
     fSurfaceBase = NULL;
@@ skipping 482 matching lines @@
 bool SkAutoROCanvasPixels::asROBitmap(SkBitmap* bitmap) const {
     if (fAddr) {
         return bitmap->installPixels(fInfo, const_cast<void*>(fAddr), fRowBytes,
                                      NULL, NULL);
     } else {
         bitmap->reset();
         return false;
     }
 }
 
+void SkCanvas::onPushCull(const SkRect& cullRect) {
+    // do nothing. Subclasses may do something
+}
+
+void SkCanvas::onPopCull() {
+    // do nothing. Subclasses may do something
+}
+
 /////////////////////////////////////////////////////////////////////////////
 
 void SkCanvas::internalDrawBitmap(const SkBitmap& bitmap,
                                 const SkMatrix& matrix, const SkPaint* paint) {
     if (bitmap.drawsNothing()) {
         return;
     }
 
     SkLazyPaint lazy;
     if (NULL == paint) {
@@ skipping 1283 matching lines @@
     return *paint;
 }
 
 const SkRegion& SkCanvas::LayerIter::clip() const { return fImpl->getClip(); }
 int SkCanvas::LayerIter::x() const { return fImpl->getX(); }
 int SkCanvas::LayerIter::y() const { return fImpl->getY(); }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 SkCanvas::ClipVisitor::~ClipVisitor() { }