66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// NoesisGUI - http://www.noesisengine.com
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// Copyright (c) 2013 Noesis Technologies S.L. All Rights Reserved.
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////////////////////////////////////////////////////////////////////////////////////////////////////
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#ifndef __GUI_FONTPROVIDER_H__
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#define __GUI_FONTPROVIDER_H__
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#include <NsCore/Noesis.h>
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#include <NsCore/BaseComponent.h>
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#include <NsCore/Ptr.h>
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#include <NsCore/String.h>
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#include <NsCore/Delegate.h>
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#include <NsGui/FontProperties.h>
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namespace Noesis
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{
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struct Uri;
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class Stream;
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struct FontSource
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{
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// Name of the font file (.ttf .otf .ttc)
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String filename;
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// Content of the font file
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Ptr<Stream> file;
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// The index of the face within the font file
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uint32_t faceIndex;
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// Base class for implementing providers of fonts
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////////////////////////////////////////////////////////////////////////////////////////////////////
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class FontProvider: public BaseComponent
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{
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public:
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/// Finds the font in the given URI that best matches the specified properties
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/// Returns null stream when there are not matches
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virtual FontSource MatchFont(const Uri& baseUri, const char* familyName, FontWeight& weight,
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FontStretch& stretch, FontStyle& style) = 0;
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/// Returns true if the requested font family exists in given URI
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virtual bool FamilyExists(const Uri& baseUri, const char* familyName) = 0;
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/// Delegate to notify changes to the font file content
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typedef Delegate<void (const Uri& baseUri, const char* familyName, FontWeight weight,
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FontStretch stretch, FontStyle style)> FontChangedDelegate;
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FontChangedDelegate& FontChanged() { return mFontChanged; }
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void RaiseFontChanged(const Uri& baseUri, const char* familyName, FontWeight weight,
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FontStretch stretch, FontStyle style) { mFontChanged(baseUri, familyName, weight, stretch,
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style); }
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private:
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FontChangedDelegate mFontChanged;
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};
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}
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#endif
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