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51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GFX_TextRenderer_H
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#define GFX_TextRenderer_H
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#include "mozilla/gfx/2D.h"
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#include "nsISupportsImpl.h"
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#include <string>
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namespace mozilla {
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namespace layers {
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class Compositor;
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class TextRenderer
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{
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~TextRenderer();
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public:
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NS_INLINE_DECL_REFCOUNTING(TextRenderer)
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explicit TextRenderer(Compositor *aCompositor)
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: mCompositor(aCompositor), mMap({nullptr, 0})
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{
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}
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void RenderText(const std::string& aText, const gfx::IntPoint& aOrigin,
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const gfx::Matrix4x4& aTransform, uint32_t aTextSize,
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uint32_t aTargetPixelWidth);
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gfx::DataSourceSurface::MappedSurface& GetSurfaceMap() { return mMap; }
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private:
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// Note that this may still fail to set mGlyphBitmaps to a valid value
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// if the underlying CreateDataSourceSurface fails for some reason.
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void EnsureInitialized();
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RefPtr<Compositor> mCompositor;
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RefPtr<gfx::DataSourceSurface> mGlyphBitmaps;
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gfx::DataSourceSurface::MappedSurface mMap;
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};
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} // namespace layers
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} // namespace mozilla
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#endif
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