a0ba714ad5
Change-Id: Idf0977befc8ed4fd9eb3b733db5e945457b2164c Reviewed-on: https://skia-review.googlesource.com/73701 Reviewed-by: Ben Wagner <bungeman@google.com> Commit-Queue: Brian Salomon <bsalomon@google.com>
64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
/*
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* Copyright 2017 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkAtlasTextTarget_DEFINED
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#define SkAtlasTextTarget_DEFINED
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#include <memory>
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#include "SkRefCnt.h"
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#include "SkScalar.h"
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class SkAtlasTextContext;
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class SkAtlasTextFont;
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struct SkPoint;
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/** Represents a client-created renderable surface and is used to draw text into the surface. */
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class SK_API SkAtlasTextTarget {
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public:
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virtual ~SkAtlasTextTarget();
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/**
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* Creates a text drawing target. ‘handle’ is used to identify this rendering surface when
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* draws are flushed to the SkAtlasTextContext's SkAtlasTextRenderer.
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*/
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static std::unique_ptr<SkAtlasTextTarget> Make(sk_sp<SkAtlasTextContext>, int width, int height,
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void* handle);
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/**
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* Enqueues a text draw in the target. The caller provides an array of glyphs and their
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* positions. The meaning of 'color' here is interpreted by the client's SkAtlasTextRenderer
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* when it actually renders the text.
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*/
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virtual void drawText(const SkGlyphID[], const SkPoint[], int glyphCnt, uint32_t color,
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const SkAtlasTextFont&) = 0;
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/** Issues all queued text draws to SkAtlasTextRenderer. */
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virtual void flush() = 0;
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int width() const { return fWidth; }
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int height() const { return fHeight; }
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void* handle() const { return fHandle; }
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SkAtlasTextContext* context() const { return fContext.get(); }
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protected:
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SkAtlasTextTarget(sk_sp<SkAtlasTextContext>, int width, int height, void* handle);
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void* const fHandle;
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const sk_sp<SkAtlasTextContext> fContext;
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const int fWidth;
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const int fHeight;
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private:
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SkAtlasTextTarget() = delete;
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SkAtlasTextTarget(const SkAtlasTextContext&) = delete;
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SkAtlasTextTarget& operator=(const SkAtlasTextContext&) = delete;
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};
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#endif
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