Source code

/*
 * OpenGLOutlineFont.h 
 * Copyright (c) 2015 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED. 
 */


// Note:

// The wglUseFontOutlines function works with TrueType fonts only.
// See https://msdn.microsoft.com/en-us/library/windows/desktop/dd374393(v=vs.85).aspx

#pragma once

#include <viz++/opengl/OpenGLFont.h>

namespace VIZ {

class OpenGLOutlineFont :public OpenGLFont {

private:
  GLYPHMETRICSFLOAT gmf[CHAR_COUNT];

public:
  OpenGLOutlineFont(ClientDC* dc, Font* font, FLOAT deviation = 0.0f, FLOAT extrusion = 0.1f)
  :OpenGLFont(font)
  {
    if (dc == NULL || font == NULL) {
      throw IException("Invalid argument");
    }

    HGDIOBJ prevFont = dc -> select(font);

    //See https://msdn.microsoft.com/en-us/library/windows/desktop/dd374393(v=vs.85).aspx

    BOOL rc = wglUseFontOutlines(dc -> get(), 0, getCharCount(),  getListsBase(),
        deviation, extrusion, WGL_FONT_POLYGONS, gmf);

    dc -> select(prevFont);
    if (rc == FALSE) {
      throw IException("Failed to wglUseFontOutlines: Error(%s)", errorString());
    }
  }
};
}