text_metrics.h

/*
* Copyright 2013 Jeremie Roy. All rights reserved.
* License: https://github.com/bkaradzic/bgfx/blob/master/LICENSE
*/
 
#ifndef VCL_BGFX_TEXT_FONT_TEXT_METRICS_H
#define VCL_BGFX_TEXT_FONT_TEXT_METRICS_H
 
#include "font_manager.h"
 
namespace bgfx {
 
class TextMetrics
{
public:
    TextMetrics(FontManager* _fontManager);
 
    void appendText(FontHandle _fontHandle, const char* _string);
 
    void appendText(FontHandle _fontHandle, const wchar_t* _string);
 
    float getWidth() const { return m_width; }
 
    float getHeight() const { return m_height; }
 
    void clearText();
 
private:
    FontManager* m_fontManager;
    float m_width;
    float m_height;
    float m_x;
    float m_lineHeight;
    float m_lineGap;
};
 
class TextLineMetrics
{
public:
    TextLineMetrics(const FontInfo& _fontInfo);
 
    float getLineHeight() const { return m_lineHeight; }
 
    uint32_t getLineCount(const bx::StringView& _string) const;
 
    void getSubText(const bx::StringView& _str, uint32_t _firstLine, uint32_t _lastLine, const char*& _begin, const char*& _end);
 
private:
    float m_lineHeight;
};
 
} // namespace bgfx
 
#endif // VCL_BGFX_TEXT_FONT_TEXT_METRICS_H