85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
#pragma once
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#include <cgv/base/base.h>
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#include <vector>
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#include <string>
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#include "lib_begin.h"
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#ifdef WIN32
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#pragma warning(disable:4275)
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#pragma warning(disable:4231)
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#endif
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namespace cgv {
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namespace media {
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/// namespace for font support
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namespace font {
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/// declaration of supported attributes of font faces
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enum FontFaceAttributes
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{
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FFA_REGULAR = 0,
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FFA_BOLD = 1,
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FFA_ITALIC = 2,
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FFA_BOLD_ITALIC = 3
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};
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/// interface class for different faces of a font, which can be constructed from a font
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class CGV_API font_face : public base::base
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{
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protected:
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/// store the actual attributes of the font face
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int ffa;
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public:
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/// construct from attributes that are declared in the enum FontFaceAttributes
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font_face(int _ffa);
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/// returns "font_face"
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std::string get_type_name() const;
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/// return the attributes
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virtual int get_attributes() const;
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/// enumerate the supported sizes
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virtual void enumerate_sizes(std::vector<int>& supported_sizes) const = 0;
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/// return the width of a text printed in the given size, which is measured in pixels
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virtual float measure_text_width(const std::string& text, float font_size) const = 0;
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};
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/// always use this ref counted pointer to store font faces
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typedef data::ref_ptr<const font_face> font_face_ptr;
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/// interface class for fonts. Construct font with the find_font function
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class CGV_API font : public base::base
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{
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public:
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/// returns "font"
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std::string get_type_name() const;
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/// return the name of the font
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virtual const char* get_name() const = 0;
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/// check whether the given font includes a face that include the possibly or-ed together selection of font face attributes
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virtual bool supports_font_face(int ffa) const = 0;
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/// return a pointer to a font face
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virtual font_face_ptr get_font_face(int ffa) const = 0;
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/// enumerate the supported font sizes
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virtual void enumerate_sizes(std::vector<int>& supported_sizes) const = 0;
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};
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/// always use this ref counted pointer to store fonts
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typedef data::ref_ptr<const font> font_ptr;
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/// find an installed font by name
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extern CGV_API font_ptr find_font(const std::string& font_name);
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/// enumerate the names of all installed fonts
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extern CGV_API void enumerate_font_names(std::vector<const char*>& font_names);
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#if _MSC_VER >= 1400
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CGV_TEMPLATE template class CGV_API data::ref_ptr<font>;
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CGV_TEMPLATE template class CGV_API data::ref_ptr<font_face>;
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#endif
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}
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}
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}
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#include <cgv/config/lib_end.h>
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