| |
| /* |
| * 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 "SkBBoxHierarchyRecord.h" |
| #include "SkPictureStateTree.h" |
| |
| SkBBoxHierarchyRecord::SkBBoxHierarchyRecord(const SkISize& size, |
| uint32_t recordFlags, |
| SkBBoxHierarchy* h) |
| : INHERITED(size, recordFlags) { |
| fStateTree = SkNEW(SkPictureStateTree); |
| fBoundingHierarchy = h; |
| fBoundingHierarchy->ref(); |
| fBoundingHierarchy->setClient(this); |
| } |
| |
| void SkBBoxHierarchyRecord::handleBBox(const SkRect& bounds) { |
| SkIRect r; |
| bounds.roundOut(&r); |
| SkPictureStateTree::Draw* draw = fStateTree->appendDraw(this->writeStream().bytesWritten()); |
| fBoundingHierarchy->insert(draw, r, true); |
| } |
| |
| void SkBBoxHierarchyRecord::willSave(SaveFlags flags) { |
| fStateTree->appendSave(); |
| this->INHERITED::willSave(flags); |
| } |
| |
| SkCanvas::SaveLayerStrategy SkBBoxHierarchyRecord::willSaveLayer(const SkRect* bounds, |
| const SkPaint* paint, |
| SaveFlags flags) { |
| // For now, assume all filters affect transparent black. |
| // FIXME: This could be made less conservative as an optimization. |
| bool paintAffectsTransparentBlack = NULL != paint && |
| ((NULL != paint->getImageFilter()) || |
| (NULL != paint->getColorFilter())); |
| SkRect drawBounds; |
| if (paintAffectsTransparentBlack) { |
| if (bounds) { |
| drawBounds = *bounds; |
| this->getTotalMatrix().mapRect(&drawBounds); |
| } else { |
| SkIRect deviceBounds; |
| this->getClipDeviceBounds(&deviceBounds); |
| drawBounds.set(deviceBounds); |
| } |
| } |
| fStateTree->appendSaveLayer(this->writeStream().bytesWritten()); |
| SkCanvas::SaveLayerStrategy strategy = this->INHERITED::willSaveLayer(bounds, paint, flags); |
| if (paintAffectsTransparentBlack) { |
| this->handleBBox(drawBounds); |
| this->addNoOp(); |
| } |
| return strategy; |
| } |
| |
| void SkBBoxHierarchyRecord::willRestore() { |
| fStateTree->appendRestore(); |
| this->INHERITED::willRestore(); |
| } |
| |
| void SkBBoxHierarchyRecord::didConcat(const SkMatrix& matrix) { |
| fStateTree->appendTransform(getTotalMatrix()); |
| INHERITED::didConcat(matrix); |
| } |
| |
| void SkBBoxHierarchyRecord::didSetMatrix(const SkMatrix& matrix) { |
| fStateTree->appendTransform(getTotalMatrix()); |
| INHERITED::didSetMatrix(matrix); |
| } |
| |
| void SkBBoxHierarchyRecord::onClipRect(const SkRect& rect, |
| SkRegion::Op op, |
| ClipEdgeStyle edgeStyle) { |
| fStateTree->appendClip(this->writeStream().bytesWritten()); |
| this->INHERITED::onClipRect(rect, op, edgeStyle); |
| } |
| |
| void SkBBoxHierarchyRecord::onClipRegion(const SkRegion& region, |
| SkRegion::Op op) { |
| fStateTree->appendClip(this->writeStream().bytesWritten()); |
| this->INHERITED::onClipRegion(region, op); |
| } |
| |
| void SkBBoxHierarchyRecord::onClipPath(const SkPath& path, |
| SkRegion::Op op, |
| ClipEdgeStyle edgeStyle) { |
| fStateTree->appendClip(this->writeStream().bytesWritten()); |
| this->INHERITED::onClipPath(path, op, edgeStyle); |
| } |
| |
| void SkBBoxHierarchyRecord::onClipRRect(const SkRRect& rrect, |
| SkRegion::Op op, |
| ClipEdgeStyle edgeStyle) { |
| fStateTree->appendClip(this->writeStream().bytesWritten()); |
| this->INHERITED::onClipRRect(rrect, op, edgeStyle); |
| } |
| |
| bool SkBBoxHierarchyRecord::shouldRewind(void* data) { |
| // SkBBoxHierarchy::rewindInserts is called by SkPicture after the |
| // SkPicture has rewound its command stream. To match that rewind in the |
| // BBH, we rewind all draws that reference commands that were recorded |
| // past the point to which the SkPicture has rewound, which is given by |
| // writeStream().bytesWritten(). |
| SkPictureStateTree::Draw* draw = static_cast<SkPictureStateTree::Draw*>(data); |
| return draw->fOffset >= writeStream().bytesWritten(); |
| } |