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* 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 {
SkTestCanvas(SkCanvas* canvas);
void onDrawGlyphRunList(
const sktext::GlyphRunList& glyphRunList, const SkPaint& paint) override;
#endif // SkTestCanvas_DEFINED