FIFE 2008.0
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00001 /*************************************************************************** 00002 * Copyright (C) 2005-2008 by the FIFE team * 00003 * http://www.fifengine.de * 00004 * This file is part of FIFE. * 00005 * * 00006 * FIFE is free software; you can redistribute it and/or * 00007 * modify it under the terms of the GNU Lesser General Public * 00008 * License as published by the Free Software Foundation; either * 00009 * version 2.1 of the License, or (at your option) any later version. * 00010 * * 00011 * This library is distributed in the hope that it will be useful, * 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * 00014 * Lesser General Public License for more details. * 00015 * * 00016 * You should have received a copy of the GNU Lesser General Public * 00017 * License along with this library; if not, write to the * 00018 * Free Software Foundation, Inc., * 00019 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * 00020 ***************************************************************************/ 00021 00022 // Standard C++ library includes 00023 #include <cassert> 00024 00025 // 3rd party library includes 00026 #include <SDL.h> 00027 00028 // FIFE includes 00029 // These includes are split up in two parts, separated by one empty line 00030 // First block: files included from the FIFE root src directory 00031 // Second block: files included from the same folder 00032 #include "util/base/exception.h" 00033 #include "util/structures/rect.h" 00034 #include "util/utf8/utf8.h" 00035 #include "video/image.h" 00036 #include "video/renderbackend.h" 00037 00038 #include "truetypefont.h" 00039 00040 namespace FIFE { 00041 00042 TrueTypeFont::TrueTypeFont(const std::string& filename, int size) 00043 : FIFE::FontBase() { 00044 mFilename = filename; 00045 mFont = NULL; 00046 00047 mFont = TTF_OpenFont(filename.c_str(), size); 00048 00049 if (mFont == NULL) { 00050 throw FIFE::CannotOpenFile(filename + " (" + TTF_GetError() + ")"); 00051 } 00052 mColor.r = mColor.g = mColor.b = mColor.unused = 255; 00053 } 00054 00055 TrueTypeFont::~TrueTypeFont() { 00056 TTF_CloseFont(mFont); 00057 } 00058 00059 int TrueTypeFont::getWidth(const std::string& text) const { 00060 int w, h; 00061 assert( utf8::is_valid(text.begin(), text.end()) ); 00062 TTF_SizeUTF8(mFont, text.c_str(), &w, &h); 00063 return w; 00064 } 00065 00066 int TrueTypeFont::getHeight() const { 00067 return TTF_FontHeight(mFont) + getRowSpacing(); 00068 } 00069 00070 SDL_Surface* TrueTypeFont::renderString(const std::string& text) { 00071 if( text.empty() ) { 00072 SDL_Surface *surface = SDL_CreateRGBSurface(SDL_SWSURFACE, 00073 1,getHeight(),32, 00074 RMASK, GMASK, BMASK ,AMASK); 00075 SDL_FillRect(surface,0,0x00000000); 00076 return surface; 00077 } 00078 00079 SDL_Surface* renderedText = 0; 00080 if (m_antiAlias) { 00081 renderedText = TTF_RenderUTF8_Blended(mFont, text.c_str(), mColor); 00082 } else { 00083 renderedText = TTF_RenderUTF8_Solid(mFont, text.c_str(), mColor); 00084 } 00085 // Workaround for a freetype bug, see here: 00086 // http://www.nabble.com/SDL_ttf-and-DPMSDisable-bug-is-back-or-still-there-to9578884.html 00087 if (renderedText == 0 && !m_antiAlias) { 00088 renderedText = TTF_RenderUTF8_Blended(mFont, text.c_str(), mColor); 00089 } 00090 // Still could not render? Something went horribly wrong! 00091 if (renderedText == 0) { 00092 throw FIFE::SDLException(TTF_GetError()); 00093 } 00094 return renderedText; 00095 } 00096 00097 void TrueTypeFont::setColor(Uint8 r, Uint8 g, Uint8 b, Uint8 a) { 00098 mColor.r = r; 00099 mColor.g = g; 00100 mColor.b = b; 00101 mColor.unused = a; 00102 } 00103 }