| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkRecordDraw_DEFINED |
| #define SkRecordDraw_DEFINED |
| |
| #include "SkRecord.h" |
| #include "SkCanvas.h" |
| #include "SkDrawPictureCallback.h" |
| |
| // Draw an SkRecord into an SkCanvas. A convenience wrapper around SkRecords::Draw. |
| void SkRecordDraw(const SkRecord&, SkCanvas*, SkDrawPictureCallback* = NULL); |
| |
| namespace SkRecords { |
| |
| // This is an SkRecord visitor that will draw that SkRecord to an SkCanvas. |
| class Draw : SkNoncopyable { |
| public: |
| explicit Draw(SkCanvas* canvas) |
| : fInitialCTM(canvas->getTotalMatrix()), fCanvas(canvas), fIndex(0) {} |
| |
| unsigned index() const { return fIndex; } |
| void next() { ++fIndex; } |
| |
| template <typename T> void operator()(const T& r) { |
| if (!this->skip(r)) { |
| this->draw(r); |
| } |
| } |
| |
| private: |
| // No base case, so we'll be compile-time checked that we implement all possibilities. |
| template <typename T> void draw(const T&); |
| |
| // skip() should return true if we can skip this command, false if not. |
| // It may update fIndex directly to skip more than just this one command. |
| |
| // Mostly we just blindly call fCanvas and let it handle quick rejects itself. |
| template <typename T> bool skip(const T&) { return false; } |
| |
| // We add our own quick rejects for commands added by optimizations. |
| bool skip(const PairedPushCull&); |
| bool skip(const BoundedDrawPosTextH&); |
| |
| const SkMatrix fInitialCTM; |
| SkCanvas* fCanvas; |
| unsigned fIndex; |
| }; |
| |
| } // namespace SkRecords |
| |
| #endif//SkRecordDraw_DEFINED |