| /* |
| * Copyright 2022 Google LLC |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| // SkTestCanvas is a simple way to make a testing canvas which is allowed to use private |
| // facilities of SkCanvas without having to add a friend to SkCanvas.h. |
| // |
| // You create a Key (a simple empty struct) to make a template specialization class. You need to |
| // make a key for each of the different Canvases you need. The implementations of the canvases |
| // are in SkCanvas.cpp, which allows the use of helper classes. |
| |
| #ifndef SkTestCanvas_DEFINED |
| #define SkTestCanvas_DEFINED |
| |
| #include "include/core/SkSize.h" |
| #include "include/utils/SkNWayCanvas.h" |
| #include "src/core/SkDevice.h" |
| #include "src/text/GlyphRun.h" |
| |
| // You can only make template specializations of SkTestCanvas. |
| template <typename Key> class SkTestCanvas; |
| |
| // A test canvas to test using slug rendering instead of text blob rendering. |
| struct SkSlugTestKey {}; |
| template <> |
| class SkTestCanvas<SkSlugTestKey> : public SkCanvas { |
| public: |
| SkTestCanvas(SkCanvas* canvas); |
| void onDrawGlyphRunList( |
| const sktext::GlyphRunList& glyphRunList, const SkPaint& paint) override; |
| }; |
| |
| #endif // SkTestCanvas_DEFINED |