OZ++ Class: OpenGLRasterFont |
/****************************************************************************** * * Copyright (c) 2015 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer. * * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * * OpenGLRasterFont.h * *****************************************************************************/ // Please see: http://www-f9.ijs.si/~matevz/docs/007-2392-003/sgi_html/ch03.html #pragma once #include <oz++/opengl/OpenGLObject.h> #include <oz++/opengl/OpenGLLists.h> #include <oz++/Exception.h> namespace OZ { class OpenGLRasterFont :public OpenGLObject { private: OpenGLLists* lists; public: OpenGLRasterFont(Display* display, const char* fontName) :OpenGLObject(display), lists(NULL) { XFontStruct* fontStruct = XLoadQueryFont(display, fontName); if (fontStruct == NULL) { throw IException("Failed to XLoadQueryFont %s", fontName); } Font fid = fontStruct->fid; unsigned int first = fontStruct -> min_char_or_byte2; unsigned int last = fontStruct -> max_char_or_byte2; lists = new OpenGLLists(last+1); GLuint base = lists -> getBase(); glXUseXFont(fid, first, last-first+1, base+first); } ~OpenGLRasterFont() { delete lists; } void draw(int x, int y, const char* string) { if (string) { glRasterPos2i(x, y); lists -> call(strlen(string), GL_UNSIGNED_BYTE, (void*)string); } } //2015/06/20 This really works for a wide char string? void draw(int x, int y, const wchar_t* string) { if (string) { glRasterPos2i(x, y); lists -> call(wcslen(string), GL_4_BYTES, (void*)string); } } }; }