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/*
* Copyright 2021 Google LLC
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrSlug_DEFINED
#define GrSlug_DEFINED
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
class SkCanvas;
class SkPaint;
class SkTextBlob;
// You can use GrSlug to simulate drawTextBlob by defining the following at compile time.
// SK_EXPERIMENTAL_SIMULATE_DRAWGLYPHRUNLIST_WITH_SLUG
// For Skia, add this to your args.gn file.
// extra_cflags = ["-D", "SK_EXPERIMENTAL_SIMULATE_DRAWGLYPHRUNLIST_WITH_SLUG"]
// GrSlug encapsulates an SkTextBlob at a specific origin, using a specific paint. It can be
// manipulated using matrix and clip changes to the canvas. If the canvas is transformed, then
// the GrSlug will also transform with smaller glyphs using bi-linear interpolation to render. You
// can think of a GrSlug as making a rubber stamp out of a SkTextBlob.
class SK_API GrSlug : public SkRefCnt {
public:
~GrSlug() override;
// Return nullptr if the blob would not draw. This is not because of clipping, but because of
// some paint optimization. The GrSlug is captured as if drawn using drawTextBlob.
static sk_sp<GrSlug> ConvertBlob(
SkCanvas* canvas, const SkTextBlob& blob, SkPoint origin, const SkPaint& paint);
// Draw the GrSlug obeying the canvas's mapping and clipping.
void draw(SkCanvas* canvas);
virtual SkRect sourceBounds() const = 0;
virtual const SkPaint& paint() const = 0;
};
#endif // GrSlug_DEFINED
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