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<h1>FontLoader.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001
<a name="l00002"></a>00002 <span class="comment">//</span>
<a name="l00003"></a>00003 <span class="comment">// SFML - Simple and Fast Multimedia Library</span>
<a name="l00004"></a>00004 <span class="comment">// Copyright (C) 2007-2009 Laurent Gomila (laurent.gom@gmail.com)</span>
<a name="l00005"></a>00005 <span class="comment">//</span>
<a name="l00006"></a>00006 <span class="comment">// This software is provided 'as-is', without any express or implied warranty.</span>
<a name="l00007"></a>00007 <span class="comment">// In no event will the authors be held liable for any damages arising from the use of this software.</span>
<a name="l00008"></a>00008 <span class="comment">//</span>
<a name="l00009"></a>00009 <span class="comment">// Permission is granted to anyone to use this software for any purpose,</span>
<a name="l00010"></a>00010 <span class="comment">// including commercial applications, and to alter it and redistribute it freely,</span>
<a name="l00011"></a>00011 <span class="comment">// subject to the following restrictions:</span>
<a name="l00012"></a>00012 <span class="comment">//</span>
<a name="l00013"></a>00013 <span class="comment">// 1. The origin of this software must not be misrepresented;</span>
<a name="l00014"></a>00014 <span class="comment">// you must not claim that you wrote the original software.</span>
<a name="l00015"></a>00015 <span class="comment">// If you use this software in a product, an acknowledgment</span>
<a name="l00016"></a>00016 <span class="comment">// in the product documentation would be appreciated but is not required.</span>
<a name="l00017"></a>00017 <span class="comment">//</span>
<a name="l00018"></a>00018 <span class="comment">// 2. Altered source versions must be plainly marked as such,</span>
<a name="l00019"></a>00019 <span class="comment">// and must not be misrepresented as being the original software.</span>
<a name="l00020"></a>00020 <span class="comment">//</span>
<a name="l00021"></a>00021 <span class="comment">// 3. This notice may not be removed or altered from any source distribution.</span>
<a name="l00022"></a>00022 <span class="comment">//</span>
<a name="l00024"></a>00024 <span class="comment"></span>
<a name="l00026"></a>00026 <span class="comment">// Headers</span>
<a name="l00028"></a>00028 <span class="comment"></span><span class="preprocessor">#include <SFML/Graphics/FontLoader.hpp></span>
<a name="l00029"></a>00029 <span class="preprocessor">#include <SFML/Graphics/Color.hpp></span>
<a name="l00030"></a>00030 <span class="preprocessor">#include <SFML/Graphics/Font.hpp></span>
<a name="l00031"></a>00031 <span class="preprocessor">#include <SFML/Graphics/Image.hpp></span>
<a name="l00032"></a>00032 <span class="preprocessor">#include <SFML/Graphics/GraphicsContext.hpp></span>
<a name="l00033"></a>00033 <span class="preprocessor">#include FT_GLYPH_H</span>
<a name="l00034"></a>00034 <span class="preprocessor"></span><span class="preprocessor">#include <iostream></span>
<a name="l00035"></a>00035 <span class="preprocessor">#include <map></span>
<a name="l00036"></a>00036 <span class="preprocessor">#include <vector></span>
<a name="l00037"></a>00037 <span class="preprocessor">#include <math.h></span>
<a name="l00038"></a>00038
<a name="l00039"></a>00039
<a name="l00040"></a>00040 <span class="keyword">namespace</span>
<a name="l00041"></a>00041 {
<a name="l00043"></a>00043 <span class="comment">// Functor to sort glyphs by size</span>
<a name="l00045"></a>00045 <span class="comment"></span> <span class="keyword">struct </span>SizeCompare
<a name="l00046"></a>00046 {
<a name="l00047"></a>00047 <span class="keywordtype">bool</span> operator ()(FT_BitmapGlyph Glyph1, FT_BitmapGlyph Glyph2)<span class="keyword"> const</span>
<a name="l00048"></a>00048 <span class="keyword"> </span>{
<a name="l00049"></a>00049 <span class="keywordflow">return</span> Glyph2->bitmap.rows < Glyph1->bitmap.rows;
<a name="l00050"></a>00050 }
<a name="l00051"></a>00051 };
<a name="l00052"></a>00052 }
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <span class="keyword">namespace </span>sf
<a name="l00055"></a>00055 {
<a name="l00056"></a>00056 <span class="keyword">namespace </span>priv
<a name="l00057"></a>00057 {
<a name="l00061"></a>00061 FontLoader& FontLoader::GetInstance()
<a name="l00062"></a>00062 {
<a name="l00063"></a>00063 <span class="keyword">static</span> FontLoader Instance;
<a name="l00064"></a>00064
<a name="l00065"></a>00065 <span class="keywordflow">return</span> Instance;
<a name="l00066"></a>00066 }
<a name="l00067"></a>00067
<a name="l00068"></a>00068
<a name="l00072"></a>00072 FontLoader::FontLoader()
<a name="l00073"></a>00073 {
<a name="l00074"></a>00074 <span class="comment">// Initialize FreeType library</span>
<a name="l00075"></a>00075 FT_Error Error = FT_Init_FreeType(&myLibrary);
<a name="l00076"></a>00076 <span class="keywordflow">if</span> (Error)
<a name="l00077"></a>00077 {
<a name="l00078"></a>00078 std::cerr << <span class="stringliteral">"Failed to initialize FreeType library (error code : "</span> << Error << <span class="stringliteral">")"</span> << std::endl;
<a name="l00079"></a>00079 <span class="keywordflow">return</span>;
<a name="l00080"></a>00080 }
<a name="l00081"></a>00081 }
<a name="l00082"></a>00082
<a name="l00083"></a>00083
<a name="l00087"></a>00087 FontLoader::~FontLoader()
<a name="l00088"></a>00088 {
<a name="l00089"></a>00089 <span class="comment">// Shutdown FreeType library</span>
<a name="l00090"></a>00090 <span class="keywordflow">if</span> (myLibrary)
<a name="l00091"></a>00091 FT_Done_FreeType(myLibrary);
<a name="l00092"></a>00092 }
<a name="l00093"></a>00093
<a name="l00094"></a>00094
<a name="l00098"></a>00098 <span class="keywordtype">bool</span> FontLoader::LoadFontFromFile(<span class="keyword">const</span> std::string& Filename, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> CharSize, <span class="keyword">const</span> Unicode::UTF32String& Charset, Font& LoadedFont)
<a name="l00099"></a>00099 {
<a name="l00100"></a>00100 <span class="comment">// Check if Freetype is correctly initialized</span>
<a name="l00101"></a>00101 <span class="keywordflow">if</span> (!myLibrary)
<a name="l00102"></a>00102 {
<a name="l00103"></a>00103 std::cerr << <span class="stringliteral">"Failed to load font \""</span> << Filename << <span class="stringliteral">"\", FreeType has not been initialized"</span> << std::endl;
<a name="l00104"></a>00104 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00105"></a>00105 }
<a name="l00106"></a>00106
<a name="l00107"></a>00107 <span class="comment">// Create a new font face from the specified file</span>
<a name="l00108"></a>00108 FT_Face FontFace;
<a name="l00109"></a>00109 FT_Error Error = FT_New_Face(myLibrary, Filename.c_str(), 0, &FontFace);
<a name="l00110"></a>00110 <span class="keywordflow">if</span> (Error)
<a name="l00111"></a>00111 {
<a name="l00112"></a>00112 std::cerr << <span class="stringliteral">"Failed to load font \""</span> << Filename << <span class="stringliteral">"\" ("</span> << GetErrorDesc(Error) << <span class="stringliteral">")"</span> << std::endl;
<a name="l00113"></a>00113 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00114"></a>00114 }
<a name="l00115"></a>00115
<a name="l00116"></a>00116 <span class="comment">// Create the bitmap font</span>
<a name="l00117"></a>00117 Error = CreateBitmapFont(FontFace, CharSize, Charset, LoadedFont);
<a name="l00118"></a>00118 <span class="keywordflow">if</span> (Error)
<a name="l00119"></a>00119 std::cerr << <span class="stringliteral">"Failed to load font \""</span> << Filename << <span class="stringliteral">"\" ("</span> << GetErrorDesc(Error) << <span class="stringliteral">")"</span> << std::endl;
<a name="l00120"></a>00120
<a name="l00121"></a>00121 <span class="comment">// Delete the font</span>
<a name="l00122"></a>00122 FT_Done_Face(FontFace);
<a name="l00123"></a>00123
<a name="l00124"></a>00124 <span class="keywordflow">return</span> Error == 0;
<a name="l00125"></a>00125 }
<a name="l00126"></a>00126
<a name="l00127"></a>00127
<a name="l00131"></a>00131 <span class="keywordtype">bool</span> FontLoader::LoadFontFromMemory(<span class="keyword">const</span> <span class="keywordtype">char</span>* Data, std::size_t SizeInBytes, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> CharSize, <span class="keyword">const</span> Unicode::UTF32String& Charset, Font& LoadedFont)
<a name="l00132"></a>00132 {
<a name="l00133"></a>00133 <span class="comment">// Check if Freetype is correctly initialized</span>
<a name="l00134"></a>00134 <span class="keywordflow">if</span> (!myLibrary)
<a name="l00135"></a>00135 {
<a name="l00136"></a>00136 std::cerr << <span class="stringliteral">"Failed to load font from memory, FreeType has not been initialized"</span> << std::endl;
<a name="l00137"></a>00137 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00138"></a>00138 }
<a name="l00139"></a>00139
<a name="l00140"></a>00140 <span class="comment">// Create a new font face from the specified memory data</span>
<a name="l00141"></a>00141 FT_Face FontFace;
<a name="l00142"></a>00142 FT_Error Error = FT_New_Memory_Face(myLibrary, reinterpret_cast<const FT_Byte*>(Data), static_cast<FT_Long>(SizeInBytes), 0, &FontFace);
<a name="l00143"></a>00143 <span class="keywordflow">if</span> (Error)
<a name="l00144"></a>00144 {
<a name="l00145"></a>00145 std::cerr << <span class="stringliteral">"Failed to load font from memory ("</span> << GetErrorDesc(Error) << <span class="stringliteral">")"</span> << std::endl;
<a name="l00146"></a>00146 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00147"></a>00147 }
<a name="l00148"></a>00148
<a name="l00149"></a>00149 <span class="comment">// Create the bitmap font</span>
<a name="l00150"></a>00150 Error = CreateBitmapFont(FontFace, CharSize, Charset, LoadedFont);
<a name="l00151"></a>00151 <span class="keywordflow">if</span> (Error)
<a name="l00152"></a>00152 std::cerr << <span class="stringliteral">"Failed to load font from memory ("</span> << GetErrorDesc(Error) << <span class="stringliteral">")"</span> << std::endl;
<a name="l00153"></a>00153
<a name="l00154"></a>00154 <span class="comment">// Delete the font</span>
<a name="l00155"></a>00155 FT_Done_Face(FontFace);
<a name="l00156"></a>00156
<a name="l00157"></a>00157 <span class="keywordflow">return</span> Error == 0;
<a name="l00158"></a>00158 }
<a name="l00159"></a>00159
<a name="l00160"></a>00160
<a name="l00164"></a>00164 FT_Error FontLoader::CreateBitmapFont(FT_Face FontFace, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> CharSize, <span class="keyword">const</span> Unicode::UTF32String& Charset, Font& LoadedFont)
<a name="l00165"></a>00165 {
<a name="l00166"></a>00166 <span class="comment">// Make sure we have a valid context</span>
<a name="l00167"></a>00167 priv::GraphicsContext Ctx;
<a name="l00168"></a>00168
<a name="l00169"></a>00169 <span class="comment">// Let's find how many characters to put in each row to make them fit into a squared texture</span>
<a name="l00170"></a>00170 GLint MaxSize;
<a name="l00171"></a>00171 GLCheck(glGetIntegerv(GL_MAX_TEXTURE_SIZE, &MaxSize));
<a name="l00172"></a>00172 <span class="keywordtype">int</span> NbChars = <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(sqrt(static_cast<double>(Charset.length())) * 0.75);
<a name="l00173"></a>00173
<a name="l00174"></a>00174 <span class="comment">// Clamp the character size to make sure we won't create a texture too big</span>
<a name="l00175"></a>00175 <span class="keywordflow">if</span> (NbChars * CharSize >= static_cast<unsigned int>(MaxSize))
<a name="l00176"></a>00176 CharSize = MaxSize / NbChars;
<a name="l00177"></a>00177
<a name="l00178"></a>00178 <span class="comment">// Initialize the dimensions</span>
<a name="l00179"></a>00179 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="namespacesf_1_1Key.htm#d32ed01d3448273340bd25af5cdd9c811b48e9fd546b2afdcbb64ae95047be94" title="Left arrow.">Left</a> = 0;
<a name="l00180"></a>00180 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> Top = 0;
<a name="l00181"></a>00181 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> TexWidth = <a class="code" href="classsf_1_1Image.htm#b41056600a1a4848833cc8b5239a9488" title="Get a valid texture size according to hardware support.">Image::GetValidTextureSize</a>(CharSize * NbChars);
<a name="l00182"></a>00182 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> TexHeight = CharSize * NbChars;
<a name="l00183"></a>00183 std::vector<unsigned int> Tops(TexWidth, 0);
<a name="l00184"></a>00184
<a name="l00185"></a>00185 <span class="comment">// Create a pixel buffer for rendering every glyph</span>
<a name="l00186"></a>00186 std::vector<Uint8> GlyphsBuffer(TexWidth * TexHeight * 4);
<a name="l00187"></a>00187
<a name="l00188"></a>00188 <span class="comment">// Setup the font size</span>
<a name="l00189"></a>00189 FT_Error Error = FT_Set_Pixel_Sizes(FontFace, CharSize, CharSize);
<a name="l00190"></a>00190 <span class="keywordflow">if</span> (Error)
<a name="l00191"></a>00191 <span class="keywordflow">return</span> Error;
<a name="l00192"></a>00192
<a name="l00193"></a>00193 <span class="comment">// Select the unicode character map</span>
<a name="l00194"></a>00194 Error = FT_Select_Charmap(FontFace, FT_ENCODING_UNICODE);
<a name="l00195"></a>00195 <span class="keywordflow">if</span> (Error)
<a name="l00196"></a>00196 <span class="keywordflow">return</span> Error;
<a name="l00197"></a>00197
<a name="l00198"></a>00198 <span class="comment">// Render all glyphs and sort them by size to optimize texture space</span>
<a name="l00199"></a>00199 <span class="keyword">typedef</span> std::multimap<FT_BitmapGlyph, Uint32, SizeCompare> GlyphTable;
<a name="l00200"></a>00200 GlyphTable Glyphs;
<a name="l00201"></a>00201 <span class="keywordflow">for</span> (std::size_t i = 0; i < Charset.length(); ++i)
<a name="l00202"></a>00202 {
<a name="l00203"></a>00203 <span class="comment">// Load the glyph corresponding to the current character</span>
<a name="l00204"></a>00204 Error = FT_Load_Char(FontFace, Charset[i], FT_LOAD_TARGET_NORMAL);
<a name="l00205"></a>00205 <span class="keywordflow">if</span> (Error)
<a name="l00206"></a>00206 <span class="keywordflow">return</span> Error;
<a name="l00207"></a>00207
<a name="l00208"></a>00208 <span class="comment">// Convert the glyph to a bitmap (ie. rasterize it)</span>
<a name="l00209"></a>00209 FT_Glyph Glyph;
<a name="l00210"></a>00210 Error = FT_Get_Glyph(FontFace->glyph, &Glyph);
<a name="l00211"></a>00211 <span class="keywordflow">if</span> (Error)
<a name="l00212"></a>00212 <span class="keywordflow">return</span> Error;
<a name="l00213"></a>00213 FT_Glyph_To_Bitmap(&Glyph, FT_RENDER_MODE_NORMAL, 0, 1);
<a name="l00214"></a>00214 FT_BitmapGlyph BitmapGlyph = (FT_BitmapGlyph)Glyph;
<a name="l00215"></a>00215
<a name="l00216"></a>00216 <span class="comment">// Add it to the sorted table of glyphs</span>
<a name="l00217"></a>00217 Glyphs.insert(std::make_pair(BitmapGlyph, Charset[i]));
<a name="l00218"></a>00218 }
<a name="l00219"></a>00219
<a name="l00220"></a>00220 <span class="comment">// Copy the rendered glyphs into the texture</span>
<a name="l00221"></a>00221 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> MaxHeight = 0;
<a name="l00222"></a>00222 std::map<Uint32, IntRect> Coords;
<a name="l00223"></a>00223 <span class="keywordflow">for</span> (GlyphTable::const_iterator i = Glyphs.begin(); i != Glyphs.end(); ++i)
<a name="l00224"></a>00224 {
<a name="l00225"></a>00225 <span class="comment">// Get the bitmap of the current glyph</span>
<a name="l00226"></a>00226 Glyph& CurGlyph = LoadedFont.myGlyphs[i->second];
<a name="l00227"></a>00227 FT_BitmapGlyph BitmapGlyph = i->first;
<a name="l00228"></a>00228 FT_Bitmap& Bitmap = BitmapGlyph->bitmap;
<a name="l00229"></a>00229
<a name="l00230"></a>00230 <span class="comment">// Make sure we don't go over the texture width</span>
<a name="l00231"></a>00231 <span class="keywordflow">if</span> (Left + Bitmap.width + 1 >= TexWidth)
<a name="l00232"></a>00232 Left = 0;
<a name="l00233"></a>00233
<a name="l00234"></a>00234 <span class="comment">// Compute the top coordinate</span>
<a name="l00235"></a>00235 Top = Tops[Left];
<a name="l00236"></a>00236 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> x = 0; x < Bitmap.width + 1; ++x)
<a name="l00237"></a>00237 Top = std::max(Top, Tops[Left + x]);
<a name="l00238"></a>00238 Top++;
<a name="l00239"></a>00239
<a name="l00240"></a>00240 <span class="comment">// Make sure we don't go over the texture height -- resize it if we need more space</span>
<a name="l00241"></a>00241 <span class="keywordflow">if</span> (Top + Bitmap.rows + 1 >= TexHeight)
<a name="l00242"></a>00242 {
<a name="l00243"></a>00243 TexHeight *= 2;
<a name="l00244"></a>00244 GlyphsBuffer.resize(TexWidth * TexHeight * 4);
<a name="l00245"></a>00245 }
<a name="l00246"></a>00246
<a name="l00247"></a>00247 <span class="comment">// Store the character's position and size</span>
<a name="l00248"></a>00248 CurGlyph.Rectangle.Left = BitmapGlyph->left;
<a name="l00249"></a>00249 CurGlyph.Rectangle.Top = -BitmapGlyph->top;
<a name="l00250"></a>00250 CurGlyph.Rectangle.Right = CurGlyph.Rectangle.Left + Bitmap.width;
<a name="l00251"></a>00251 CurGlyph.Rectangle.Bottom = Bitmap.rows - BitmapGlyph->top;
<a name="l00252"></a>00252 CurGlyph.Advance = BitmapGlyph->root.advance.x >> 16;
<a name="l00253"></a>00253
<a name="l00254"></a>00254 <span class="comment">// Texture size may change, so let the texture coordinates be calculated later</span>
<a name="l00255"></a>00255 Coords[i->second] = IntRect(Left + 1, Top + 1, Left + Bitmap.width + 1, Top + Bitmap.rows + 1);
<a name="l00256"></a>00256
<a name="l00257"></a>00257 <span class="comment">// Draw the glyph into our bitmap font</span>
<a name="l00258"></a>00258 <span class="keyword">const</span> Uint8* Pixels = Bitmap.buffer;
<a name="l00259"></a>00259 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> y = 0; y < Bitmap.rows; ++y)
<a name="l00260"></a>00260 {
<a name="l00261"></a>00261 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> x = 0; x < Bitmap.width; ++x)
<a name="l00262"></a>00262 {
<a name="l00263"></a>00263 std::size_t Index = x + Left + 1 + (y + Top + 1) * TexWidth;
<a name="l00264"></a>00264 GlyphsBuffer[Index * 4 + 0] = 255;
<a name="l00265"></a>00265 GlyphsBuffer[Index * 4 + 1] = 255;
<a name="l00266"></a>00266 GlyphsBuffer[Index * 4 + 2] = 255;
<a name="l00267"></a>00267 GlyphsBuffer[Index * 4 + 3] = Pixels[x];
<a name="l00268"></a>00268 }
<a name="l00269"></a>00269 Pixels += Bitmap.pitch;
<a name="l00270"></a>00270 }
<a name="l00271"></a>00271
<a name="l00272"></a>00272 <span class="comment">// Update the rendering coordinates</span>
<a name="l00273"></a>00273 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> x = 0; x < Bitmap.width + 1; ++x)
<a name="l00274"></a>00274 Tops[Left + x] = Top + Bitmap.rows;
<a name="l00275"></a>00275 Left += Bitmap.width + 1;
<a name="l00276"></a>00276 if (Top + Bitmap.rows > MaxHeight)
<a name="l00277"></a>00277 MaxHeight = Top + Bitmap.rows;
<a name="l00278"></a>00278
<a name="l00279"></a>00279 <span class="comment">// Delete the glyph</span>
<a name="l00280"></a>00280 FT_Done_Glyph((FT_Glyph)BitmapGlyph);
<a name="l00281"></a>00281 }
<a name="l00282"></a>00282
<a name="l00283"></a>00283 <span class="comment">// Create the font's texture</span>
<a name="l00284"></a>00284 TexHeight = MaxHeight + 1;
<a name="l00285"></a>00285 GlyphsBuffer.resize(TexWidth * TexHeight * 4);
<a name="l00286"></a>00286 LoadedFont.myTexture.LoadFromPixels(TexWidth, TexHeight, &GlyphsBuffer[0]);
<a name="l00287"></a>00287
<a name="l00288"></a>00288 <span class="comment">// Now that the texture is created, we can precompute texture coordinates</span>
<a name="l00289"></a>00289 <span class="keywordflow">for</span> (std::size_t i = 0; i < Charset.size(); ++i)
<a name="l00290"></a>00290 {
<a name="l00291"></a>00291 Uint32 CurChar = Charset[i];
<a name="l00292"></a>00292 LoadedFont.myGlyphs[CurChar].TexCoords = LoadedFont.myTexture.GetTexCoords(Coords[CurChar]);
<a name="l00293"></a>00293 }
<a name="l00294"></a>00294
<a name="l00295"></a>00295 <span class="comment">// Update the character size (it may have been changed by the function)</span>
<a name="l00296"></a>00296 LoadedFont.myCharSize = CharSize;
<a name="l00297"></a>00297
<a name="l00298"></a>00298 <span class="keywordflow">return</span> 0;
<a name="l00299"></a>00299 }
<a name="l00300"></a>00300
<a name="l00301"></a>00301
<a name="l00305"></a>00305 std::string FontLoader::GetErrorDesc(FT_Error Error)
<a name="l00306"></a>00306 {
<a name="l00307"></a>00307 <span class="keywordflow">switch</span> (Error)
<a name="l00308"></a>00308 {
<a name="l00309"></a>00309 <span class="comment">// Generic errors</span>
<a name="l00310"></a>00310 <span class="keywordflow">case</span> FT_Err_Cannot_Open_Resource : <span class="keywordflow">return</span> <span class="stringliteral">"cannot open resource"</span>;
<a name="l00311"></a>00311 <span class="keywordflow">case</span> FT_Err_Unknown_File_Format : <span class="keywordflow">return</span> <span class="stringliteral">"unknown file format"</span>;
<a name="l00312"></a>00312 <span class="keywordflow">case</span> FT_Err_Invalid_File_Format : <span class="keywordflow">return</span> <span class="stringliteral">"broken file"</span>;
<a name="l00313"></a>00313 <span class="keywordflow">case</span> FT_Err_Invalid_Version : <span class="keywordflow">return</span> <span class="stringliteral">"invalid FreeType version"</span>;
<a name="l00314"></a>00314 <span class="keywordflow">case</span> FT_Err_Lower_Module_Version : <span class="keywordflow">return</span> <span class="stringliteral">"module version is too low"</span>;
<a name="l00315"></a>00315 <span class="keywordflow">case</span> FT_Err_Invalid_Argument : <span class="keywordflow">return</span> <span class="stringliteral">"invalid argument"</span>;
<a name="l00316"></a>00316 <span class="keywordflow">case</span> FT_Err_Unimplemented_Feature : <span class="keywordflow">return</span> <span class="stringliteral">"unimplemented feature"</span>;
<a name="l00317"></a>00317 <span class="keywordflow">case</span> FT_Err_Invalid_Table : <span class="keywordflow">return</span> <span class="stringliteral">"broken table"</span>;
<a name="l00318"></a>00318 <span class="keywordflow">case</span> FT_Err_Invalid_Offset : <span class="keywordflow">return</span> <span class="stringliteral">"broken offset within table"</span>;
<a name="l00319"></a>00319
<a name="l00320"></a>00320 <span class="comment">// Glyph / character errors</span>
<a name="l00321"></a>00321 <span class="keywordflow">case</span> FT_Err_Invalid_Glyph_Index : <span class="keywordflow">return</span> <span class="stringliteral">"invalid glyph index"</span>;
<a name="l00322"></a>00322 <span class="keywordflow">case</span> FT_Err_Invalid_Character_Code : <span class="keywordflow">return</span> <span class="stringliteral">"invalid character code"</span>;
<a name="l00323"></a>00323 <span class="keywordflow">case</span> FT_Err_Invalid_Glyph_Format : <span class="keywordflow">return</span> <span class="stringliteral">"unsupported glyph image format"</span>;
<a name="l00324"></a>00324 <span class="keywordflow">case</span> FT_Err_Cannot_Render_Glyph : <span class="keywordflow">return</span> <span class="stringliteral">"cannot render this glyph format"</span>;
<a name="l00325"></a>00325 <span class="keywordflow">case</span> FT_Err_Invalid_Outline : <span class="keywordflow">return</span> <span class="stringliteral">"invalid outline"</span>;
<a name="l00326"></a>00326 <span class="keywordflow">case</span> FT_Err_Invalid_Composite : <span class="keywordflow">return</span> <span class="stringliteral">"invalid composite glyph"</span>;
<a name="l00327"></a>00327 <span class="keywordflow">case</span> FT_Err_Too_Many_Hints : <span class="keywordflow">return</span> <span class="stringliteral">"too many hints"</span>;
<a name="l00328"></a>00328 <span class="keywordflow">case</span> FT_Err_Invalid_Pixel_Size : <span class="keywordflow">return</span> <span class="stringliteral">"invalid pixel size"</span>;
<a name="l00329"></a>00329
<a name="l00330"></a>00330 <span class="comment">// Handle errors</span>
<a name="l00331"></a>00331 <span class="keywordflow">case</span> FT_Err_Invalid_Handle : <span class="keywordflow">return</span> <span class="stringliteral">"invalid object handle"</span>;
<a name="l00332"></a>00332 <span class="keywordflow">case</span> FT_Err_Invalid_Library_Handle : <span class="keywordflow">return</span> <span class="stringliteral">"invalid library handle"</span>;
<a name="l00333"></a>00333 <span class="keywordflow">case</span> FT_Err_Invalid_Driver_Handle : <span class="keywordflow">return</span> <span class="stringliteral">"invalid module handle"</span>;
<a name="l00334"></a>00334 <span class="keywordflow">case</span> FT_Err_Invalid_Face_Handle : <span class="keywordflow">return</span> <span class="stringliteral">"invalid face handle"</span>;
<a name="l00335"></a>00335 <span class="keywordflow">case</span> FT_Err_Invalid_Size_Handle : <span class="keywordflow">return</span> <span class="stringliteral">"invalid size handle"</span>;
<a name="l00336"></a>00336 <span class="keywordflow">case</span> FT_Err_Invalid_Slot_Handle : <span class="keywordflow">return</span> <span class="stringliteral">"invalid glyph slot handle"</span>;
<a name="l00337"></a>00337 <span class="keywordflow">case</span> FT_Err_Invalid_CharMap_Handle : <span class="keywordflow">return</span> <span class="stringliteral">"invalid charmap handle"</span>;
<a name="l00338"></a>00338 <span class="keywordflow">case</span> FT_Err_Invalid_Cache_Handle : <span class="keywordflow">return</span> <span class="stringliteral">"invalid cache manager handle"</span>;
<a name="l00339"></a>00339 <span class="keywordflow">case</span> FT_Err_Invalid_Stream_Handle : <span class="keywordflow">return</span> <span class="stringliteral">"invalid stream handle"</span>;
<a name="l00340"></a>00340
<a name="l00341"></a>00341 <span class="comment">// Driver errors</span>
<a name="l00342"></a>00342 <span class="keywordflow">case</span> FT_Err_Too_Many_Drivers : <span class="keywordflow">return</span> <span class="stringliteral">"too many modules"</span>;
<a name="l00343"></a>00343 <span class="keywordflow">case</span> FT_Err_Too_Many_Extensions : <span class="keywordflow">return</span> <span class="stringliteral">"too many extensions"</span>;
<a name="l00344"></a>00344
<a name="l00345"></a>00345 <span class="comment">// Memory errors</span>
<a name="l00346"></a>00346 <span class="keywordflow">case</span> FT_Err_Out_Of_Memory : <span class="keywordflow">return</span> <span class="stringliteral">"out of memory"</span>;
<a name="l00347"></a>00347 <span class="keywordflow">case</span> FT_Err_Unlisted_Object : <span class="keywordflow">return</span> <span class="stringliteral">"unlisted object"</span>;
<a name="l00348"></a>00348
<a name="l00349"></a>00349 <span class="comment">// Stream errors</span>
<a name="l00350"></a>00350 <span class="keywordflow">case</span> FT_Err_Cannot_Open_Stream : <span class="keywordflow">return</span> <span class="stringliteral">"cannot open stream"</span>;
<a name="l00351"></a>00351 <span class="keywordflow">case</span> FT_Err_Invalid_Stream_Seek : <span class="keywordflow">return</span> <span class="stringliteral">"invalid stream seek"</span>;
<a name="l00352"></a>00352 <span class="keywordflow">case</span> FT_Err_Invalid_Stream_Skip : <span class="keywordflow">return</span> <span class="stringliteral">"invalid stream skip"</span>;
<a name="l00353"></a>00353 <span class="keywordflow">case</span> FT_Err_Invalid_Stream_Read : <span class="keywordflow">return</span> <span class="stringliteral">"invalid stream read"</span>;
<a name="l00354"></a>00354 <span class="keywordflow">case</span> FT_Err_Invalid_Stream_Operation : <span class="keywordflow">return</span> <span class="stringliteral">"invalid stream operation"</span>;
<a name="l00355"></a>00355 <span class="keywordflow">case</span> FT_Err_Invalid_Frame_Operation : <span class="keywordflow">return</span> <span class="stringliteral">"invalid frame operation"</span>;
<a name="l00356"></a>00356 <span class="keywordflow">case</span> FT_Err_Nested_Frame_Access : <span class="keywordflow">return</span> <span class="stringliteral">"nested frame access"</span>;
<a name="l00357"></a>00357 <span class="keywordflow">case</span> FT_Err_Invalid_Frame_Read : <span class="keywordflow">return</span> <span class="stringliteral">"invalid frame read"</span>;
<a name="l00358"></a>00358
<a name="l00359"></a>00359 <span class="comment">// Raster errors</span>
<a name="l00360"></a>00360 <span class="keywordflow">case</span> FT_Err_Raster_Uninitialized : <span class="keywordflow">return</span> <span class="stringliteral">"raster uninitialized"</span>;
<a name="l00361"></a>00361 <span class="keywordflow">case</span> FT_Err_Raster_Corrupted : <span class="keywordflow">return</span> <span class="stringliteral">"raster corrupted"</span>;
<a name="l00362"></a>00362 <span class="keywordflow">case</span> FT_Err_Raster_Overflow : <span class="keywordflow">return</span> <span class="stringliteral">"raster overflow"</span>;
<a name="l00363"></a>00363 <span class="keywordflow">case</span> FT_Err_Raster_Negative_Height : <span class="keywordflow">return</span> <span class="stringliteral">"negative height while rastering"</span>;
<a name="l00364"></a>00364
<a name="l00365"></a>00365 <span class="comment">// Cache errors</span>
<a name="l00366"></a>00366 <span class="keywordflow">case</span> FT_Err_Too_Many_Caches : <span class="keywordflow">return</span> <span class="stringliteral">"too many registered caches"</span>;
<a name="l00367"></a>00367
<a name="l00368"></a>00368 <span class="comment">// TrueType and SFNT errors</span>
<a name="l00369"></a>00369 <span class="keywordflow">case</span> FT_Err_Invalid_Opcode : <span class="keywordflow">return</span> <span class="stringliteral">"invalid opcode"</span>;
<a name="l00370"></a>00370 <span class="keywordflow">case</span> FT_Err_Too_Few_Arguments : <span class="keywordflow">return</span> <span class="stringliteral">"too few arguments"</span>;
<a name="l00371"></a>00371 <span class="keywordflow">case</span> FT_Err_Stack_Overflow : <span class="keywordflow">return</span> <span class="stringliteral">"stack overflow"</span>;
<a name="l00372"></a>00372 <span class="keywordflow">case</span> FT_Err_Code_Overflow : <span class="keywordflow">return</span> <span class="stringliteral">"code overflow"</span>;
<a name="l00373"></a>00373 <span class="keywordflow">case</span> FT_Err_Bad_Argument : <span class="keywordflow">return</span> <span class="stringliteral">"bad argument"</span>;
<a name="l00374"></a>00374 <span class="keywordflow">case</span> FT_Err_Divide_By_Zero : <span class="keywordflow">return</span> <span class="stringliteral">"division by zero"</span>;
<a name="l00375"></a>00375 <span class="keywordflow">case</span> FT_Err_Invalid_Reference : <span class="keywordflow">return</span> <span class="stringliteral">"invalid reference"</span>;
<a name="l00376"></a>00376 <span class="keywordflow">case</span> FT_Err_Debug_OpCode : <span class="keywordflow">return</span> <span class="stringliteral">"found debug opcode"</span>;
<a name="l00377"></a>00377 <span class="keywordflow">case</span> FT_Err_ENDF_In_Exec_Stream : <span class="keywordflow">return</span> <span class="stringliteral">"found ENDF opcode in execution stream"</span>;
<a name="l00378"></a>00378 <span class="keywordflow">case</span> FT_Err_Nested_DEFS : <span class="keywordflow">return</span> <span class="stringliteral">"nested DEFS"</span>;
<a name="l00379"></a>00379 <span class="keywordflow">case</span> FT_Err_Invalid_CodeRange : <span class="keywordflow">return</span> <span class="stringliteral">"invalid code range"</span>;
<a name="l00380"></a>00380 <span class="keywordflow">case</span> FT_Err_Execution_Too_Long : <span class="keywordflow">return</span> <span class="stringliteral">"execution context too long"</span>;
<a name="l00381"></a>00381 <span class="keywordflow">case</span> FT_Err_Too_Many_Function_Defs : <span class="keywordflow">return</span> <span class="stringliteral">"too many function definitions"</span>;
<a name="l00382"></a>00382 <span class="keywordflow">case</span> FT_Err_Too_Many_Instruction_Defs : <span class="keywordflow">return</span> <span class="stringliteral">"too many instruction definitions"</span>;
<a name="l00383"></a>00383 <span class="keywordflow">case</span> FT_Err_Table_Missing : <span class="keywordflow">return</span> <span class="stringliteral">"SFNT font table missing"</span>;
<a name="l00384"></a>00384 <span class="keywordflow">case</span> FT_Err_Horiz_Header_Missing : <span class="keywordflow">return</span> <span class="stringliteral">"horizontal header (hhea) table missing"</span>;
<a name="l00385"></a>00385 <span class="keywordflow">case</span> FT_Err_Locations_Missing : <span class="keywordflow">return</span> <span class="stringliteral">"locations (loca) table missing"</span>;
<a name="l00386"></a>00386 <span class="keywordflow">case</span> FT_Err_Name_Table_Missing : <span class="keywordflow">return</span> <span class="stringliteral">"name table missing"</span>;
<a name="l00387"></a>00387 <span class="keywordflow">case</span> FT_Err_CMap_Table_Missing : <span class="keywordflow">return</span> <span class="stringliteral">"character map (cmap) table missing"</span>;
<a name="l00388"></a>00388 <span class="keywordflow">case</span> FT_Err_Hmtx_Table_Missing : <span class="keywordflow">return</span> <span class="stringliteral">"horizontal metrics (hmtx) table missing"</span>;
<a name="l00389"></a>00389 <span class="keywordflow">case</span> FT_Err_Post_Table_Missing : <span class="keywordflow">return</span> <span class="stringliteral">"PostScript (post) table missing"</span>;
<a name="l00390"></a>00390 <span class="keywordflow">case</span> FT_Err_Invalid_Horiz_Metrics : <span class="keywordflow">return</span> <span class="stringliteral">"invalid horizontal metrics"</span>;
<a name="l00391"></a>00391 <span class="keywordflow">case</span> FT_Err_Invalid_CharMap_Format : <span class="keywordflow">return</span> <span class="stringliteral">"invalid character map (cmap) format"</span>;
<a name="l00392"></a>00392 <span class="keywordflow">case</span> FT_Err_Invalid_PPem : <span class="keywordflow">return</span> <span class="stringliteral">"invalid ppem value"</span>;
<a name="l00393"></a>00393 <span class="keywordflow">case</span> FT_Err_Invalid_Vert_Metrics : <span class="keywordflow">return</span> <span class="stringliteral">"invalid vertical metrics"</span>;
<a name="l00394"></a>00394 <span class="keywordflow">case</span> FT_Err_Could_Not_Find_Context : <span class="keywordflow">return</span> <span class="stringliteral">"could not find context"</span>;
<a name="l00395"></a>00395 <span class="keywordflow">case</span> FT_Err_Invalid_Post_Table_Format : <span class="keywordflow">return</span> <span class="stringliteral">"invalid PostScript (post) table format"</span>;
<a name="l00396"></a>00396 <span class="keywordflow">case</span> FT_Err_Invalid_Post_Table : <span class="keywordflow">return</span> <span class="stringliteral">"invalid PostScript (post) table"</span>;
<a name="l00397"></a>00397
<a name="l00398"></a>00398 <span class="comment">// CCF, CID and Type 1 errors</span>
<a name="l00399"></a>00399 <span class="keywordflow">case</span> FT_Err_Syntax_Error : <span class="keywordflow">return</span> <span class="stringliteral">"opcode syntax error"</span>;
<a name="l00400"></a>00400 <span class="keywordflow">case</span> FT_Err_Stack_Underflow : <span class="keywordflow">return</span> <span class="stringliteral">"argument stack underflow"</span>;
<a name="l00401"></a>00401 <span class="keywordflow">case</span> FT_Err_Ignore : <span class="keywordflow">return</span> <span class="stringliteral">"ignore"</span>;
<a name="l00402"></a>00402
<a name="l00403"></a>00403 <span class="comment">// BDF errors</span>
<a name="l00404"></a>00404 <span class="keywordflow">case</span> FT_Err_Missing_Startfont_Field : <span class="keywordflow">return</span> <span class="stringliteral">"`STARTFONT' field missing"</span>;
<a name="l00405"></a>00405 <span class="keywordflow">case</span> FT_Err_Missing_Font_Field : <span class="keywordflow">return</span> <span class="stringliteral">"`FONT' field missing"</span>;
<a name="l00406"></a>00406 <span class="keywordflow">case</span> FT_Err_Missing_Size_Field : <span class="keywordflow">return</span> <span class="stringliteral">"`SIZE' field missing"</span>;
<a name="l00407"></a>00407 <span class="keywordflow">case</span> FT_Err_Missing_Chars_Field : <span class="keywordflow">return</span> <span class="stringliteral">"`CHARS' field missing"</span>;
<a name="l00408"></a>00408 <span class="keywordflow">case</span> FT_Err_Missing_Startchar_Field : <span class="keywordflow">return</span> <span class="stringliteral">"`STARTCHAR' field missing"</span>;
<a name="l00409"></a>00409 <span class="keywordflow">case</span> FT_Err_Missing_Encoding_Field : <span class="keywordflow">return</span> <span class="stringliteral">"`ENCODING' field missing"</span>;
<a name="l00410"></a>00410 <span class="keywordflow">case</span> FT_Err_Missing_Bbx_Field : <span class="keywordflow">return</span> <span class="stringliteral">"`BBX' field missing"</span>;
<a name="l00411"></a>00411 }
<a name="l00412"></a>00412
<a name="l00413"></a>00413 <span class="keywordflow">return</span> <span class="stringliteral">"unknown error"</span>;
<a name="l00414"></a>00414 }
<a name="l00415"></a>00415
<a name="l00416"></a>00416 } <span class="comment">// namespace priv</span>
<a name="l00417"></a>00417
<a name="l00418"></a>00418 } <span class="comment">// namespace sf</span>
<a name="l00419"></a>00419
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