ParagraphPainterImpl.h

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// Copyright 2019 Google LLC.
#ifndef ParagraphPainterImpl_DEFINED
#define ParagraphPainterImpl_DEFINED
 
#include "include/core/SkCanvas.h"
#include "modules/skparagraph/include/ParagraphPainter.h"
 
namespace skia {
namespace textlayout {
 
class CanvasParagraphPainter : public ParagraphPainter {
public:
    CanvasParagraphPainter(SkCanvas* canvas);
 
    void drawTextBlob(const sk_sp<SkTextBlob>& blob, SkScalar x, SkScalar y, const SkPaintOrID& paint) override;
    void drawTextShadow(const sk_sp<SkTextBlob>& blob, SkScalar x, SkScalar y, SkColor color, SkScalar blurSigma) override;
    void drawRect(const SkRect& rect, const SkPaintOrID& paint) override;
    void drawFilledRect(const SkRect& rect, const DecorationStyle& decorStyle) override;
    void drawPath(const SkPath& path, const DecorationStyle& decorStyle) override;
    void drawLine(SkScalar x0, SkScalar y0, SkScalar x1, SkScalar y1, const DecorationStyle& decorStyle) override;
 
    void clipRect(const SkRect& rect) override;
    void translate(SkScalar dx, SkScalar dy) override;
 
    void save() override;
    void restore() override;
 
private:
    SkCanvas* fCanvas;
};
 
class ParagraphPainterAutoRestore {
public:
    ParagraphPainterAutoRestore(ParagraphPainter* painter)
        : fPainter(painter) {
        fPainter->save();
    }
 
    ~ParagraphPainterAutoRestore() {
        fPainter->restore();
    }
 
private:
    ParagraphPainter*   fPainter;
};
 
}  // namespace textlayout
}  // namespace skia
 
#endif  // ParagraphPainterImpl_DEFINED