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67 lines
2.1 KiB
C++
67 lines
2.1 KiB
C++
/*
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Copyright (C) 2013 Birunthan Mohanathas
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef RM_GFX_TEXTFORMATD2D_H_
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#define RM_GFX_TEXTFORMATD2D_H_
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#include "TextFormat.h"
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#include <string>
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#include <dwrite.h>
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namespace Gfx {
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// Provides a Direct2D/DirectWrite implementation of TextFormat for use with CanvasD2D.
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class TextFormatD2D : public TextFormat
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{
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public:
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TextFormatD2D();
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virtual ~TextFormatD2D();
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virtual bool IsInitialized() const override { return m_TextFormat != nullptr; }
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virtual void SetProperties(
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const WCHAR* fontFamily, int size, bool bold, bool italic,
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const FontCollection* fontCollection) override;
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virtual void SetTrimming(bool trim) override;
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virtual void SetHorizontalAlignment(HorizontalAlignment alignment) override;
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virtual void SetVerticalAlignment(VerticalAlignment alignment) override;
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private:
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friend class CanvasD2D;
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TextFormatD2D(const TextFormatD2D& other) {}
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void Dispose();
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// Creates a new DirectWrite text layout if |str| has changed since last call. Since creating
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// the layout is costly, it is more efficient to keep reusing the text layout until the text
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// changes.
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void CreateLayout(const WCHAR* str, UINT strLen, float maxW, float maxH);
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IDWriteTextFormat* m_TextFormat;
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IDWriteTextLayout* m_TextLayout;
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IDWriteInlineObject* m_InlineEllipsis;
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std::wstring m_LastString;
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};
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} // namespace Gfx
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#endif |