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<h1>fontconv.c</h1> </div>
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<a href="fontconv_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* This code is (C) AllegroGL contributors, and double licensed under</span>
<a name="l00002"></a>00002 <span class="comment"> * the GPL and zlib licenses. See gpl.txt or zlib.txt for details.</span>
<a name="l00003"></a>00003 <span class="comment"> */</span>
<a name="l00013"></a>00013 <span class="preprocessor">#include <math.h></span>
<a name="l00014"></a>00014 <span class="preprocessor">#include <string.h></span>
<a name="l00015"></a>00015 <span class="preprocessor">#include <stdio.h></span>
<a name="l00016"></a>00016
<a name="l00017"></a>00017 <span class="preprocessor">#include <allegro.h></span>
<a name="l00018"></a>00018 <span class="preprocessor">#include <allegro/internal/aintern.h></span>
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <span class="preprocessor">#include "alleggl.h"</span>
<a name="l00021"></a>00021 <span class="preprocessor">#include "allglint.h"</span>
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="preprocessor">#ifdef ALLEGRO_MACOSX</span>
<a name="l00024"></a>00024 <span class="preprocessor"></span><span class="preprocessor">#include <OpenGL/glu.h></span>
<a name="l00025"></a>00025 <span class="preprocessor">#else</span>
<a name="l00026"></a>00026 <span class="preprocessor"></span><span class="preprocessor">#include <GL/glu.h></span>
<a name="l00027"></a>00027 <span class="preprocessor">#endif</span>
<a name="l00028"></a>00028 <span class="preprocessor"></span>
<a name="l00029"></a>00029 <span class="preprocessor">#if defined ALLEGRO_WITH_XWINDOWS && !defined ALLEGROGL_GENERIC_DRIVER</span>
<a name="l00030"></a>00030 <span class="preprocessor"></span><span class="preprocessor">#include <xalleg.h></span>
<a name="l00031"></a>00031 <span class="preprocessor">#include <GL/glx.h></span>
<a name="l00032"></a>00032 <span class="preprocessor">#endif</span>
<a name="l00033"></a>00033 <span class="preprocessor"></span>
<a name="l00034"></a>00034 <span class="preprocessor">#define PREFIX_I "agl-font INFO: "</span>
<a name="l00035"></a>00035 <span class="preprocessor"></span><span class="preprocessor">#define PREFIX_W "agl-font WARNING: "</span>
<a name="l00036"></a>00036 <span class="preprocessor"></span><span class="preprocessor">#define PREFIX_E "agl-font ERROR: "</span>
<a name="l00037"></a>00037 <span class="preprocessor"></span>
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="comment">/* Number of pixels between characters in a textured font.</span>
<a name="l00040"></a>00040 <span class="comment"> */</span>
<a name="l00041"></a>00041 <span class="preprocessor">#define FONT_CHARACTER_SPACING 2</span>
<a name="l00042"></a>00042 <span class="preprocessor"></span>
<a name="l00043"></a>00043 <span class="comment">/* Uncomment to have the font generator dump screenshots of the textures it</span>
<a name="l00044"></a>00044 <span class="comment"> * generates.</span>
<a name="l00045"></a>00045 <span class="comment"> */</span>
<a name="l00046"></a>00046 <span class="comment">/* #define SAVE_FONT_SCREENSHOT */</span>
<a name="l00047"></a>00047
<a name="l00048"></a>00048
<a name="l00049"></a>00049 <span class="keyword">static</span> <span class="keywordtype">int</span> agl_get_font_height(AL_CONST FONT *f);
<a name="l00050"></a>00050 <span class="keyword">static</span> <span class="keywordtype">int</span> agl_char_length(<span class="keyword">const</span> FONT *f, <span class="keywordtype">int</span> ch);
<a name="l00051"></a>00051 <span class="keyword">static</span> <span class="keywordtype">int</span> agl_text_length(<span class="keyword">const</span> FONT *f, <span class="keyword">const</span> <span class="keywordtype">char</span> *str);
<a name="l00052"></a>00052
<a name="l00053"></a>00053 <span class="keyword">static</span> <span class="keywordtype">int</span> agl_get_font_ranges(FONT *f);
<a name="l00054"></a>00054 <span class="keyword">static</span> <span class="keywordtype">int</span> agl_get_font_range_begin(FONT *f, <span class="keywordtype">int</span> range);
<a name="l00055"></a>00055 <span class="keyword">static</span> <span class="keywordtype">int</span> agl_get_font_range_end(FONT *f, <span class="keywordtype">int</span> range);
<a name="l00056"></a>00056 <span class="keyword">static</span> FONT *agl_extract_font_range(FONT *f, <span class="keywordtype">int</span> start, <span class="keywordtype">int</span> end);
<a name="l00057"></a>00057 <span class="keyword">static</span> FONT *agl_merge_fonts(FONT *f1, FONT *f2);
<a name="l00058"></a>00058
<a name="l00059"></a>00059 <span class="preprocessor">#if GET_ALLEGRO_VERSION() >= MAKE_VER(4, 2, 0)</span>
<a name="l00060"></a>00060 <span class="preprocessor"></span><span class="keyword">static</span> <span class="keywordtype">int</span> agl_transpose_font(FONT *f, <span class="keywordtype">int</span> drange);
<a name="l00061"></a>00061 <span class="preprocessor">#endif</span>
<a name="l00062"></a>00062 <span class="preprocessor"></span>
<a name="l00063"></a>00063
<a name="l00064"></a>00064 FONT_VTABLE _agl_font_vtable = {
<a name="l00065"></a>00065 agl_get_font_height,
<a name="l00066"></a>00066 agl_char_length,
<a name="l00067"></a>00067 agl_text_length,
<a name="l00068"></a>00068 NULL, <span class="comment">/* render_char */</span>
<a name="l00069"></a>00069 NULL, <span class="comment">/* render */</span>
<a name="l00070"></a>00070 <a class="code" href="group__Text.html#gabcbdd9810f7254cdb105f987ae1e557f" title="void allegro_gl_destroy_font(FONT *usefont)">allegro_gl_destroy_font</a>,
<a name="l00071"></a>00071 agl_get_font_ranges,
<a name="l00072"></a>00072 agl_get_font_range_begin,
<a name="l00073"></a>00073 agl_get_font_range_end,
<a name="l00074"></a>00074 agl_extract_font_range,
<a name="l00075"></a>00075 agl_merge_fonts,
<a name="l00076"></a>00076 <span class="preprocessor">#if GET_ALLEGRO_VERSION() >= MAKE_VER(4, 2, 0)</span>
<a name="l00077"></a>00077 <span class="preprocessor"></span> agl_transpose_font
<a name="l00078"></a>00078 <span class="preprocessor">#endif</span>
<a name="l00079"></a>00079 <span class="preprocessor"></span>};
<a name="l00080"></a>00080
<a name="l00081"></a>00081
<a name="l00082"></a>00082 FONT_VTABLE *font_vtable_agl = &_agl_font_vtable;
<a name="l00083"></a>00083
<a name="l00084"></a>00084 <span class="keyword">static</span> <span class="keywordtype">void</span> aglf_convert_allegro_font_to_bitmap(FONT_AGL_DATA *dest, FONT *f,
<a name="l00085"></a>00085 <span class="keywordtype">void</span> *src, <span class="keywordtype">int</span> *height);
<a name="l00086"></a>00086 <span class="keyword">static</span> <span class="keywordtype">void</span> aglf_convert_allegro_font_to_texture(FONT_AGL_DATA **dest, FONT *f,
<a name="l00087"></a>00087 <span class="keywordtype">void</span> *src, <span class="keywordtype">int</span> *height, <span class="keywordtype">float</span> scale, GLint format);
<a name="l00088"></a>00088 <span class="keyword">static</span> GLuint aglf_upload_texture(BITMAP *bmp, GLint format, <span class="keywordtype">int</span> has_alpha);
<a name="l00089"></a>00089 <span class="keyword">static</span> <span class="keywordtype">int</span> aglf_check_texture(BITMAP *bmp, GLint format, <span class="keywordtype">int</span> has_alpha);
<a name="l00090"></a>00090 <span class="keyword">static</span> BITMAP* look_for_texture(<span class="keywordtype">int</span> beg, <span class="keywordtype">int</span> end, AGL_GLYPH *glyphs,
<a name="l00091"></a>00091 <span class="keywordtype">int</span> max_w, <span class="keywordtype">int</span> max_h, <span class="keywordtype">int</span> total_area,
<a name="l00092"></a>00092 GLint format, <span class="keywordtype">int</span> has_alpha);
<a name="l00093"></a>00093
<a name="l00094"></a>00094
<a name="l00095"></a>00095
<a name="l00096"></a>00096 <span class="keyword">union </span>mixed_ptr {
<a name="l00097"></a>00097 FONT_MONO_DATA* mf;
<a name="l00098"></a>00098 FONT_COLOR_DATA* cf;
<a name="l00099"></a>00099 <span class="keywordtype">void</span> *ptr;
<a name="l00100"></a>00100 };
<a name="l00101"></a>00101
<a name="l00102"></a>00102
<a name="l00103"></a>00103 <span class="comment">/* Stores info about a texture size */</span>
<a name="l00104"></a>00104 <span class="keyword">typedef</span> <span class="keyword">struct </span>texture_size {
<a name="l00105"></a>00105 <span class="keywordtype">int</span> w, h;
<a name="l00106"></a>00106 } texture_size;
<a name="l00107"></a>00107
<a name="l00108"></a>00108
<a name="l00109"></a>00109
<a name="l00110"></a>00110 <span class="keyword">static</span> <span class="keywordtype">int</span> agl_get_font_height(AL_CONST FONT *f) {
<a name="l00111"></a>00111 <span class="keywordflow">return</span> f->height;
<a name="l00112"></a>00112 }
<a name="l00113"></a>00113
<a name="l00114"></a>00114
<a name="l00115"></a>00115 <span class="comment">/* iroundf:</span>
<a name="l00116"></a>00116 <span class="comment"> * Round float to nearest integer, away from zero.</span>
<a name="l00117"></a>00117 <span class="comment"> */</span>
<a name="l00118"></a>00118 <span class="keyword">static</span> <span class="keywordtype">int</span> iroundf(<span class="keywordtype">float</span> v) {
<a name="l00119"></a>00119 <span class="keywordtype">float</span> f = floor(v);
<a name="l00120"></a>00120 <span class="keywordtype">float</span> c = ceil(v);
<a name="l00121"></a>00121
<a name="l00122"></a>00122 <span class="keywordflow">if</span> (v >= 0) {
<a name="l00123"></a>00123 <span class="comment">/* distance to ceil smaller than distance to floor */</span>
<a name="l00124"></a>00124 <span class="keywordflow">if</span> ((c - v) < (v - f))
<a name="l00125"></a>00125 <span class="keywordflow">return</span> (<span class="keywordtype">int</span>)c;
<a name="l00126"></a>00126 <span class="keywordflow">else</span>
<a name="l00127"></a>00127 <span class="keywordflow">return</span> (<span class="keywordtype">int</span>)f;
<a name="l00128"></a>00128 }
<a name="l00129"></a>00129 <span class="keywordflow">else</span> {
<a name="l00130"></a>00130 <span class="comment">/* distance to ceil smaller than distance to floor */</span>
<a name="l00131"></a>00131 <span class="keywordflow">if</span> ((c - v) < (v - f))
<a name="l00132"></a>00132 <span class="keywordflow">return</span> (<span class="keywordtype">int</span>)f;
<a name="l00133"></a>00133 <span class="keywordflow">else</span>
<a name="l00134"></a>00134 <span class="keywordflow">return</span> (<span class="keywordtype">int</span>)c;
<a name="l00135"></a>00135 }
<a name="l00136"></a>00136 }
<a name="l00137"></a>00137
<a name="l00138"></a>00138
<a name="l00139"></a>00139
<a name="l00140"></a>00140 <span class="comment">/* agl_char_length_fractional:</span>
<a name="l00141"></a>00141 <span class="comment"> * Returns the width, in fractional pixels of the given character.</span>
<a name="l00142"></a>00142 <span class="comment"> */</span>
<a name="l00143"></a>00143 <span class="keyword">static</span> <span class="keywordtype">float</span> agl_char_length_fractional(<span class="keyword">const</span> FONT *f, <span class="keywordtype">int</span> ch) {
<a name="l00144"></a>00144 FONT_AGL_DATA *fad = f->data;
<a name="l00145"></a>00145
<a name="l00146"></a>00146 <span class="keywordflow">if</span> (fad->type == <a class="code" href="group__Text.html#ga92bf039bc7b06568273ee17f15cf6671" title="Indicates that you want fonts to be converted to a texture format.">AGL_FONT_TYPE_TEXTURED</a>) {
<a name="l00147"></a>00147 <span class="keywordflow">while</span> (fad) {
<a name="l00148"></a>00148 <span class="keywordflow">if</span> (ch >= fad->start && ch < fad->end) {
<a name="l00149"></a>00149 AGL_GLYPH *coords = &(fad->glyph_coords[ch - fad->start]);
<a name="l00150"></a>00150 <span class="keywordflow">return</span> (coords->offset_x + coords->w + coords->offset_w)
<a name="l00151"></a>00151 / fabs(fad->scale);
<a name="l00152"></a>00152 }
<a name="l00153"></a>00153
<a name="l00154"></a>00154 fad = fad->next;
<a name="l00155"></a>00155 }
<a name="l00156"></a>00156 }
<a name="l00157"></a>00157 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (fad->type == <a class="code" href="group__Text.html#ga7ed8fdc1b0065d2fe584b15d69108b1a" title="Indicates that you want fonts to be converted to a bitmap format.">AGL_FONT_TYPE_BITMAP</a>) {
<a name="l00158"></a>00158 <span class="keywordflow">while</span> (fad) {
<a name="l00159"></a>00159 <span class="keywordflow">if</span> (ch >= fad->start && ch < fad->end) {
<a name="l00160"></a>00160 FONT_GLYPH **gl = fad->data;
<a name="l00161"></a>00161 <span class="keywordflow">return</span> gl[ch - fad->start]->w;
<a name="l00162"></a>00162 }
<a name="l00163"></a>00163
<a name="l00164"></a>00164 fad = fad->next;
<a name="l00165"></a>00165 }
<a name="l00166"></a>00166 }
<a name="l00167"></a>00167
<a name="l00168"></a>00168 <span class="comment">/* if we don't find the character, then search for the missing</span>
<a name="l00169"></a>00169 <span class="comment"> * glyph, but don't get stuck in a loop. */</span>
<a name="l00170"></a>00170 <span class="keywordflow">if</span> (ch != allegro_404_char)
<a name="l00171"></a>00171 <span class="keywordflow">return</span> agl_char_length_fractional(f, allegro_404_char);
<a name="l00172"></a>00172
<a name="l00173"></a>00173 <span class="keywordflow">return</span> 0;
<a name="l00174"></a>00174 }
<a name="l00175"></a>00175
<a name="l00176"></a>00176
<a name="l00177"></a>00177
<a name="l00178"></a>00178 <span class="comment">/* agl_char_length:</span>
<a name="l00179"></a>00179 <span class="comment"> * font vtable entry</span>
<a name="l00180"></a>00180 <span class="comment"> * Returns the width, in pixels of the given character.</span>
<a name="l00181"></a>00181 <span class="comment"> */</span>
<a name="l00182"></a>00182 <span class="keyword">static</span> <span class="keywordtype">int</span> agl_char_length(<span class="keyword">const</span> FONT *f, <span class="keywordtype">int</span> ch) {
<a name="l00183"></a>00183 <span class="keywordflow">return</span> iroundf(agl_char_length_fractional(f, ch));
<a name="l00184"></a>00184 }
<a name="l00185"></a>00185
<a name="l00186"></a>00186
<a name="l00187"></a>00187
<a name="l00188"></a>00188 <span class="comment">/* agl_text_length:</span>
<a name="l00189"></a>00189 <span class="comment"> * font vtable entry</span>
<a name="l00190"></a>00190 <span class="comment"> * Returns the length, in pixels, of a string as rendered in a font.</span>
<a name="l00191"></a>00191 <span class="comment"> */</span>
<a name="l00192"></a>00192 <span class="keyword">static</span> <span class="keywordtype">int</span> agl_text_length(<span class="keyword">const</span> FONT *f, <span class="keyword">const</span> <span class="keywordtype">char</span> *str) {
<a name="l00193"></a>00193 <span class="keywordtype">int</span> ch = 0;
<a name="l00194"></a>00194 <span class="keywordtype">float</span> l = 0;
<a name="l00195"></a>00195 <span class="keyword">const</span> <span class="keywordtype">char</span> *p = str;
<a name="l00196"></a>00196 ASSERT(f);
<a name="l00197"></a>00197 ASSERT(str);
<a name="l00198"></a>00198
<a name="l00199"></a>00199 <span class="keywordflow">while</span> ( (ch = ugetxc(&p)) ) {
<a name="l00200"></a>00200 l += agl_char_length_fractional(f, ch);
<a name="l00201"></a>00201 }
<a name="l00202"></a>00202
<a name="l00203"></a>00203 <span class="keywordflow">return</span> iroundf(l);
<a name="l00204"></a>00204 }
<a name="l00205"></a>00205
<a name="l00206"></a>00206
<a name="l00207"></a>00207
<a name="l00208"></a>00208 <span class="comment">/* agl_get_font_ranges:</span>
<a name="l00209"></a>00209 <span class="comment"> * font vtable entry</span>
<a name="l00210"></a>00210 <span class="comment"> * Returns the number of character ranges in a font, or -1 if that information</span>
<a name="l00211"></a>00211 <span class="comment"> * is not available.</span>
<a name="l00212"></a>00212 <span class="comment"> */</span>
<a name="l00213"></a>00213 <span class="keyword">static</span> <span class="keywordtype">int</span> agl_get_font_ranges(FONT *f) {
<a name="l00214"></a>00214 FONT_AGL_DATA *fad;
<a name="l00215"></a>00215 <span class="keywordtype">int</span> ranges = 0;
<a name="l00216"></a>00216
<a name="l00217"></a>00217 <span class="keywordflow">if</span> (!f)
<a name="l00218"></a>00218 <span class="keywordflow">return</span> 0;
<a name="l00219"></a>00219
<a name="l00220"></a>00220 fad = (FONT_AGL_DATA*)(f->data);
<a name="l00221"></a>00221
<a name="l00222"></a>00222 <span class="keywordflow">while</span> (fad) {
<a name="l00223"></a>00223 FONT_AGL_DATA *next = fad->next;
<a name="l00224"></a>00224
<a name="l00225"></a>00225 ranges++;
<a name="l00226"></a>00226 <span class="keywordflow">if</span> (!next)
<a name="l00227"></a>00227 <span class="keywordflow">return</span> ranges;
<a name="l00228"></a>00228 fad = next;
<a name="l00229"></a>00229 }
<a name="l00230"></a>00230
<a name="l00231"></a>00231 <span class="keywordflow">return</span> -1;
<a name="l00232"></a>00232 }
<a name="l00233"></a>00233
<a name="l00234"></a>00234
<a name="l00235"></a>00235
<a name="l00236"></a>00236 <span class="comment">/* agl_get_font_range_begin:</span>
<a name="l00237"></a>00237 <span class="comment"> * font vtable entry</span>
<a name="l00238"></a>00238 <span class="comment"> * Get first character for font.</span>
<a name="l00239"></a>00239 <span class="comment"> */</span>
<a name="l00240"></a>00240 <span class="keyword">static</span> <span class="keywordtype">int</span> agl_get_font_range_begin(FONT *f, <span class="keywordtype">int</span> range) {
<a name="l00241"></a>00241 FONT_AGL_DATA *fad;
<a name="l00242"></a>00242 <span class="keywordtype">int</span> n = 0;
<a name="l00243"></a>00243
<a name="l00244"></a>00244 <span class="keywordflow">if</span> (!f || !f->data)
<a name="l00245"></a>00245 <span class="keywordflow">return</span> -1;
<a name="l00246"></a>00246
<a name="l00247"></a>00247 <span class="keywordflow">if</span> (range < 0)
<a name="l00248"></a>00248 range = 0;
<a name="l00249"></a>00249
<a name="l00250"></a>00250 fad = (FONT_AGL_DATA*)(f->data);
<a name="l00251"></a>00251 <span class="keywordflow">while</span> (fad && n <= range) {
<a name="l00252"></a>00252 FONT_AGL_DATA *next = fad->next;
<a name="l00253"></a>00253
<a name="l00254"></a>00254 <span class="keywordflow">if</span> (!next || range == n)
<a name="l00255"></a>00255 <span class="keywordflow">return</span> fad->start;
<a name="l00256"></a>00256 fad = next;
<a name="l00257"></a>00257 n++;
<a name="l00258"></a>00258 }
<a name="l00259"></a>00259
<a name="l00260"></a>00260 <span class="keywordflow">return</span> -1;
<a name="l00261"></a>00261 }
<a name="l00262"></a>00262
<a name="l00263"></a>00263
<a name="l00264"></a>00264
<a name="l00265"></a>00265 <span class="comment">/* agl_get_font_range_end:</span>
<a name="l00266"></a>00266 <span class="comment"> * font vtable entry</span>
<a name="l00267"></a>00267 <span class="comment"> * Get last character for font range.</span>
<a name="l00268"></a>00268 <span class="comment"> */</span>
<a name="l00269"></a>00269 <span class="keyword">static</span> <span class="keywordtype">int</span> agl_get_font_range_end(FONT *f, <span class="keywordtype">int</span> range) {
<a name="l00270"></a>00270 FONT_AGL_DATA* fad = 0;
<a name="l00271"></a>00271 <span class="keywordtype">int</span> n = 0;
<a name="l00272"></a>00272
<a name="l00273"></a>00273 <span class="keywordflow">if</span> (!f || !f->data)
<a name="l00274"></a>00274 <span class="keywordflow">return</span> -1;
<a name="l00275"></a>00275
<a name="l00276"></a>00276 fad = (FONT_AGL_DATA*)(f->data);
<a name="l00277"></a>00277
<a name="l00278"></a>00278 <span class="keywordflow">while</span> (fad && (n <= range || range == -1)) {
<a name="l00279"></a>00279 FONT_AGL_DATA *next = fad->next;
<a name="l00280"></a>00280 <span class="keywordflow">if</span> (!next || range == n)
<a name="l00281"></a>00281 <span class="keywordflow">return</span> fad->end - 1;
<a name="l00282"></a>00282 fad = next;
<a name="l00283"></a>00283 n++;
<a name="l00284"></a>00284 }
<a name="l00285"></a>00285
<a name="l00286"></a>00286 <span class="keywordflow">return</span> -1;
<a name="l00287"></a>00287 }
<a name="l00288"></a>00288
<a name="l00289"></a>00289
<a name="l00290"></a>00290
<a name="l00291"></a>00291 <span class="comment">/* Creates a call lists from given glyph coords. Returns list base.*/</span>
<a name="l00292"></a>00292 <span class="keyword">static</span> <span class="keywordtype">int</span> create_textured_font_call_lists(AGL_GLYPH *coords, <span class="keywordtype">int</span> max, BITMAP *bmp,
<a name="l00293"></a>00293 <span class="keywordtype">float</span> scale, <span class="keywordtype">int</span> *height) {
<a name="l00294"></a>00294 GLuint list;
<a name="l00295"></a>00295 <span class="keywordtype">int</span> i;
<a name="l00296"></a>00296
<a name="l00297"></a>00297 <span class="keywordtype">int</span> rev = scale < 0 ? 1 : 0;
<a name="l00298"></a>00298 scale = fabs(scale);
<a name="l00299"></a>00299
<a name="l00300"></a>00300 list = glGenLists(max);
<a name="l00301"></a>00301
<a name="l00302"></a>00302 <span class="keywordflow">for</span> (i = 0; i < max; i++) {
<a name="l00303"></a>00303 <span class="comment">/* Coords of glyph in texture (texture coords) */</span>
<a name="l00304"></a>00304 <span class="keywordtype">float</span> tx = (float)coords[i].x / bmp->w;
<a name="l00305"></a>00305 <span class="keywordtype">float</span> ty = 1.0 - (<span class="keywordtype">float</span>)coords[i].y / bmp->h;
<a name="l00306"></a>00306 <span class="comment">/* Size of glyph in texture (texture coords) */</span>
<a name="l00307"></a>00307 <span class="keywordtype">float</span> dtx = (float)(coords[i].w) / bmp->w;
<a name="l00308"></a>00308 <span class="keywordtype">float</span> dty = (float)(coords[i].h) / bmp->h;
<a name="l00309"></a>00309
<a name="l00310"></a>00310 <span class="comment">/* Offset to apply to glyph (output coords) */</span>
<a name="l00311"></a>00311 <span class="keywordtype">float</span> xoffs = (float)coords[i].offset_x / scale;
<a name="l00312"></a>00312 <span class="keywordtype">float</span> yoffs = (float)coords[i].offset_y / scale;
<a name="l00313"></a>00313 <span class="comment">/* Size of rendered glyph (output coords) */</span>
<a name="l00314"></a>00314 <span class="keywordtype">float</span> woffs = (float)coords[i].w / scale;
<a name="l00315"></a>00315 <span class="keywordtype">float</span> hoffs = (float)coords[i].h / scale;
<a name="l00316"></a>00316
<a name="l00317"></a>00317 <span class="comment">/* Size of overall screen character including dead space */</span>
<a name="l00318"></a>00318 <span class="keywordtype">float</span> sizew = (float)(coords[i].offset_x + coords[i].w
<a name="l00319"></a>00319 + coords[i].offset_w) / scale;
<a name="l00320"></a>00320 <span class="keywordtype">int</span> sizeh = iroundf((coords[i].offset_y + coords[i].h
<a name="l00321"></a>00321 + coords[i].offset_h) / scale);
<a name="l00322"></a>00322
<a name="l00323"></a>00323 <span class="keywordflow">if</span> ((*height) < sizeh)
<a name="l00324"></a>00324 *height = sizeh;
<a name="l00325"></a>00325
<a name="l00326"></a>00326 <span class="keywordflow">if</span> (rev) {
<a name="l00327"></a>00327 hoffs = -hoffs;
<a name="l00328"></a>00328 yoffs = -yoffs;
<a name="l00329"></a>00329 }
<a name="l00330"></a>00330
<a name="l00331"></a>00331 glNewList(list + i, GL_COMPILE);
<a name="l00332"></a>00332
<a name="l00333"></a>00333 glBegin(GL_QUADS);
<a name="l00334"></a>00334 glTexCoord2f(tx, ty);
<a name="l00335"></a>00335 glVertex2f(xoffs, -yoffs);
<a name="l00336"></a>00336
<a name="l00337"></a>00337 glTexCoord2f(tx + dtx, ty);
<a name="l00338"></a>00338 glVertex2f(xoffs + woffs, -yoffs);
<a name="l00339"></a>00339
<a name="l00340"></a>00340 glTexCoord2f(tx + dtx, ty - dty);
<a name="l00341"></a>00341 glVertex2f(xoffs + woffs, -yoffs - hoffs);
<a name="l00342"></a>00342
<a name="l00343"></a>00343 glTexCoord2f(tx, ty - dty);
<a name="l00344"></a>00344 glVertex2f(xoffs, -yoffs - hoffs);
<a name="l00345"></a>00345 glEnd();
<a name="l00346"></a>00346
<a name="l00347"></a>00347 glTranslatef(sizew, 0, 0);
<a name="l00348"></a>00348
<a name="l00349"></a>00349 glEndList();
<a name="l00350"></a>00350 }
<a name="l00351"></a>00351
<a name="l00352"></a>00352 <span class="keywordflow">return</span> list;
<a name="l00353"></a>00353 }
<a name="l00354"></a>00354
<a name="l00355"></a>00355
<a name="l00356"></a>00356
<a name="l00357"></a>00357 <span class="comment">/* copy_glyph_range:</span>
<a name="l00358"></a>00358 <span class="comment"> * Copies part of glyph range.</span>
<a name="l00359"></a>00359 <span class="comment"> */</span>
<a name="l00360"></a>00360 <span class="keyword">static</span> FONT_AGL_DATA* copy_glyph_range(FONT_AGL_DATA *fad, <span class="keywordtype">int</span> start, <span class="keywordtype">int</span> end,
<a name="l00361"></a>00361 <span class="keywordtype">int</span> *height) {
<a name="l00362"></a>00362 <span class="keywordtype">int</span> i, count, w = 0, h = 0;
<a name="l00363"></a>00363 AGL_GLYPH *coords;
<a name="l00364"></a>00364 BITMAP *bmp, *srcbmp;
<a name="l00365"></a>00365 FONT_AGL_DATA *newfad = NULL;
<a name="l00366"></a>00366
<a name="l00367"></a>00367 <span class="keywordflow">if</span> (fad->type != <a class="code" href="group__Text.html#ga92bf039bc7b06568273ee17f15cf6671" title="Indicates that you want fonts to be converted to a texture format.">AGL_FONT_TYPE_TEXTURED</a>)
<a name="l00368"></a>00368 <span class="keywordflow">return</span> NULL;
<a name="l00369"></a>00369
<a name="l00370"></a>00370 count = end - start;
<a name="l00371"></a>00371
<a name="l00372"></a>00372 coords = malloc(count * <span class="keyword">sizeof</span> (AGL_GLYPH));
<a name="l00373"></a>00373
<a name="l00374"></a>00374 <span class="comment">/* for now, just copy glyph coords of the range */</span>
<a name="l00375"></a>00375 <span class="keywordflow">for</span> (i = 0; i < count; i++) {
<a name="l00376"></a>00376 coords[i] = fad->glyph_coords[start - fad->start + i];
<a name="l00377"></a>00377 coords[i].glyph_num = i;
<a name="l00378"></a>00378 }
<a name="l00379"></a>00379
<a name="l00380"></a>00380 <span class="comment">/* calculate the width of the glyphs and find the max height */</span>
<a name="l00381"></a>00381 <span class="keywordflow">for</span> (i = 0; i < count; i++) {
<a name="l00382"></a>00382 <span class="keywordtype">int</span> hh = coords[i].h + coords[i].offset_y + coords[i].offset_h;
<a name="l00383"></a>00383 <span class="keywordflow">if</span> (h < hh)
<a name="l00384"></a>00384 h = hh;
<a name="l00385"></a>00385 w += coords[i].w + coords[i].offset_w + coords[i].offset_x;
<a name="l00386"></a>00386 }
<a name="l00387"></a>00387
<a name="l00388"></a>00388 srcbmp = (BITMAP*)fad->data;
<a name="l00389"></a>00389
<a name="l00390"></a>00390 <span class="comment">/* allocate a new bitmap to hold new glyphs */</span>
<a name="l00391"></a>00391 w = __allegro_gl_make_power_of_2(w);
<a name="l00392"></a>00392 h = __allegro_gl_make_power_of_2(h);
<a name="l00393"></a>00393 bmp = create_bitmap_ex(bitmap_color_depth(srcbmp), w, h);
<a name="l00394"></a>00394 <span class="keywordflow">if</span> (!bmp) {
<a name="l00395"></a>00395 TRACE(PREFIX_E <span class="stringliteral">"copy_glyph_range: Unable to create bitmap of size"</span>
<a name="l00396"></a>00396 <span class="stringliteral">"%ix%i pixels!\n"</span>, w, h);
<a name="l00397"></a>00397 free(coords);
<a name="l00398"></a>00398 <span class="keywordflow">return</span> NULL;
<a name="l00399"></a>00399 }
<a name="l00400"></a>00400
<a name="l00401"></a>00401 <span class="keywordflow">if</span> (__allegro_gl_get_num_channels(fad->format) == 4) {
<a name="l00402"></a>00402 clear_to_color(bmp, bitmap_mask_color(bmp));
<a name="l00403"></a>00403 }
<a name="l00404"></a>00404 <span class="keywordflow">else</span> {
<a name="l00405"></a>00405 clear_bitmap(bmp);
<a name="l00406"></a>00406 }
<a name="l00407"></a>00407
<a name="l00408"></a>00408 <span class="comment">/* blit every glyph from the range to the new bitmap */</span>
<a name="l00409"></a>00409 w = 0;
<a name="l00410"></a>00410 <span class="keywordflow">for</span> (i = 0; i < count; i++) {
<a name="l00411"></a>00411 <span class="keywordtype">int</span> ch = start - fad->start + i;
<a name="l00412"></a>00412 <span class="keywordtype">int</span> ww = coords[i].w + coords[i].offset_w + coords[i].offset_x;
<a name="l00413"></a>00413 blit(srcbmp, bmp, fad->glyph_coords[ch].x, 0, w, 0, ww, bmp->h);
<a name="l00414"></a>00414 <span class="comment">/* fix new glyphs coords while here */</span>
<a name="l00415"></a>00415 coords[i].x = w;
<a name="l00416"></a>00416 w += ww;
<a name="l00417"></a>00417 }
<a name="l00418"></a>00418
<a name="l00419"></a>00419 newfad = malloc(<span class="keyword">sizeof</span>(<span class="keyword">struct</span> FONT_AGL_DATA));
<a name="l00420"></a>00420
<a name="l00421"></a>00421 newfad->type = <a class="code" href="group__Text.html#ga92bf039bc7b06568273ee17f15cf6671" title="Indicates that you want fonts to be converted to a texture format.">AGL_FONT_TYPE_TEXTURED</a>;
<a name="l00422"></a>00422 newfad->is_free_chunk = 0;
<a name="l00423"></a>00423 newfad->scale = fad->scale;
<a name="l00424"></a>00424 newfad->format = fad->format;
<a name="l00425"></a>00425 newfad->has_alpha = fad->has_alpha;
<a name="l00426"></a>00426 newfad->start = start;
<a name="l00427"></a>00427 newfad->end = end;
<a name="l00428"></a>00428 newfad->data = bmp;
<a name="l00429"></a>00429 newfad->glyph_coords = coords;
<a name="l00430"></a>00430 newfad->next = NULL;
<a name="l00431"></a>00431 newfad->list_base = create_textured_font_call_lists(coords, count, bmp,
<a name="l00432"></a>00432 newfad->scale, height);
<a name="l00433"></a>00433 newfad->texture = aglf_upload_texture(bmp, newfad->format, newfad->has_alpha);
<a name="l00434"></a>00434
<a name="l00435"></a>00435 <span class="keywordflow">return</span> newfad;
<a name="l00436"></a>00436 }
<a name="l00437"></a>00437
<a name="l00438"></a>00438
<a name="l00439"></a>00439
<a name="l00440"></a>00440 <span class="comment">/* agl_extract_font_range:</span>
<a name="l00441"></a>00441 <span class="comment"> * font vtable entry</span>
<a name="l00442"></a>00442 <span class="comment"> * Extracts a glyph range from a given font and makes a new font of it.</span>
<a name="l00443"></a>00443 <span class="comment"> */</span>
<a name="l00444"></a>00444 <span class="keyword">static</span> FONT *agl_extract_font_range(FONT *f, <span class="keywordtype">int</span> start, <span class="keywordtype">int</span> end) {
<a name="l00445"></a>00445 FONT *retval = NULL;
<a name="l00446"></a>00446 FONT_AGL_DATA *fad, *next, *newfad = NULL;
<a name="l00447"></a>00447 <span class="keywordtype">int</span> count;
<a name="l00448"></a>00448
<a name="l00449"></a>00449 <span class="keywordflow">if</span> (!f)
<a name="l00450"></a>00450 <span class="keywordflow">return</span> NULL;
<a name="l00451"></a>00451
<a name="l00452"></a>00452 <span class="comment">/* check if range boundaries make sense */</span>
<a name="l00453"></a>00453 <span class="keywordflow">if</span> (start == -1 && end == -1) {
<a name="l00454"></a>00454 }
<a name="l00455"></a>00455 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (start == -1 && end > agl_get_font_range_begin(f, -1)) {
<a name="l00456"></a>00456 }
<a name="l00457"></a>00457 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (end == -1 && start <= agl_get_font_range_end(f, -1)) {
<a name="l00458"></a>00458 }
<a name="l00459"></a>00459 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (start <= end && start != -1 && end != -1) {
<a name="l00460"></a>00460 }
<a name="l00461"></a>00461 <span class="keywordflow">else</span>
<a name="l00462"></a>00462 <span class="keywordflow">return</span> NULL;
<a name="l00463"></a>00463
<a name="l00464"></a>00464 fad = (FONT_AGL_DATA*)f->data;
<a name="l00465"></a>00465
<a name="l00466"></a>00466 <span class="comment">/* only textured fonts are supported */</span>
<a name="l00467"></a>00467 if (fad->type != <a class="code" href="group__Text.html#ga92bf039bc7b06568273ee17f15cf6671" title="Indicates that you want fonts to be converted to a texture format.">AGL_FONT_TYPE_TEXTURED</a>)
<a name="l00468"></a>00468 <span class="keywordflow">return</span> NULL;
<a name="l00469"></a>00469
<a name="l00470"></a>00470 <span class="comment">/* anticipate invalid range values */</span>
<a name="l00471"></a>00471 start = MAX(start, agl_get_font_range_begin(f, -1));
<a name="l00472"></a>00472 <span class="keywordflow">if</span> (end > -1) {
<a name="l00473"></a>00473 end = MIN(end, agl_get_font_range_end(f, -1));
<a name="l00474"></a>00474 }
<a name="l00475"></a>00475 <span class="keywordflow">else</span> {
<a name="l00476"></a>00476 end = agl_get_font_range_end(f, -1);
<a name="l00477"></a>00477 }
<a name="l00478"></a>00478 end++;
<a name="l00479"></a>00479
<a name="l00480"></a>00480 retval = malloc(<span class="keyword">sizeof</span> (<span class="keyword">struct</span> FONT));
<a name="l00481"></a>00481 retval->height = 0;
<a name="l00482"></a>00482 retval->vtable = font_vtable_agl;
<a name="l00483"></a>00483
<a name="l00484"></a>00484 next = fad;
<a name="l00485"></a>00485 count = end - start;
<a name="l00486"></a>00486
<a name="l00487"></a>00487 <span class="keywordflow">while</span> (next) {
<a name="l00488"></a>00488 <span class="comment">/* find the range that is covered by the requested range</span>
<a name="l00489"></a>00489 <span class="comment"> * check if the requested and processed ranges at least overlap</span>
<a name="l00490"></a>00490 <span class="comment"> * or if the requested range wraps processed range.</span>
<a name="l00491"></a>00491 <span class="comment"> */</span>
<a name="l00492"></a>00492 <span class="keywordflow">if</span> ((start >= next->start && start < next->end)
<a name="l00493"></a>00493 || (end <= next->end && end > next->start)
<a name="l00494"></a>00494 || (start < next->start && end > next->end)) {
<a name="l00495"></a>00495 <span class="keywordtype">int</span> local_start, local_end;
<a name="l00496"></a>00496
<a name="l00497"></a>00497 <span class="comment">/* extract the overlapping range */</span>
<a name="l00498"></a>00498 local_start = MAX(next->start, start);
<a name="l00499"></a>00499 local_end = MIN(next->end, end);
<a name="l00500"></a>00500
<a name="l00501"></a>00501 <span class="keywordflow">if</span> (newfad) {
<a name="l00502"></a>00502 newfad->next = copy_glyph_range(next, local_start, local_end,
<a name="l00503"></a>00503 &(retval->height));
<a name="l00504"></a>00504 newfad = newfad->next;
<a name="l00505"></a>00505 newfad->is_free_chunk = TRUE;
<a name="l00506"></a>00506 }
<a name="l00507"></a>00507 <span class="keywordflow">else</span> {
<a name="l00508"></a>00508 newfad = copy_glyph_range(next, local_start, local_end,
<a name="l00509"></a>00509 &(retval->height));
<a name="l00510"></a>00510 retval->data = newfad;
<a name="l00511"></a>00511 }
<a name="l00512"></a>00512 }
<a name="l00513"></a>00513
<a name="l00514"></a>00514 next = next->next;
<a name="l00515"></a>00515 }
<a name="l00516"></a>00516
<a name="l00517"></a>00517 <span class="keywordflow">return</span> retval;
<a name="l00518"></a>00518 }
<a name="l00519"></a>00519
<a name="l00520"></a>00520
<a name="l00521"></a>00521
<a name="l00522"></a>00522 <span class="comment">/* agl_merge_fonts:</span>
<a name="l00523"></a>00523 <span class="comment"> * font vtable entry</span>
<a name="l00524"></a>00524 <span class="comment"> * Merges f2 with f1 and returns a new font.</span>
<a name="l00525"></a>00525 <span class="comment"> */</span>
<a name="l00526"></a>00526 <span class="keyword">static</span> FONT *agl_merge_fonts(FONT *f1, FONT *f2) {
<a name="l00527"></a>00527 FONT *retval;
<a name="l00528"></a>00528 FONT_AGL_DATA *fad1, *fad2, *fad = NULL;
<a name="l00529"></a>00529 <span class="keywordtype">int</span> phony = 0;
<a name="l00530"></a>00530
<a name="l00531"></a>00531 <span class="keywordflow">if</span> (!f1 || !f2)
<a name="l00532"></a>00532 <span class="keywordflow">return</span> NULL;
<a name="l00533"></a>00533
<a name="l00534"></a>00534 fad1 = (FONT_AGL_DATA*)f1->data;
<a name="l00535"></a>00535 fad2 = (FONT_AGL_DATA*)f2->data;
<a name="l00536"></a>00536
<a name="l00537"></a>00537 <span class="comment">/* fonts must be textured and of the same format */</span>
<a name="l00538"></a>00538 <span class="keywordflow">if</span> (fad1->type != <a class="code" href="group__Text.html#ga92bf039bc7b06568273ee17f15cf6671" title="Indicates that you want fonts to be converted to a texture format.">AGL_FONT_TYPE_TEXTURED</a> ||
<a name="l00539"></a>00539 fad2->type != <a class="code" href="group__Text.html#ga92bf039bc7b06568273ee17f15cf6671" title="Indicates that you want fonts to be converted to a texture format.">AGL_FONT_TYPE_TEXTURED</a>)
<a name="l00540"></a>00540 <span class="keywordflow">return</span> NULL;
<a name="l00541"></a>00541
<a name="l00542"></a>00542 <span class="keywordflow">if</span> (fad1->format != fad2->format)
<a name="l00543"></a>00543 <span class="keywordflow">return</span> NULL;
<a name="l00544"></a>00544
<a name="l00545"></a>00545 <span class="comment">/* alloc output font */</span>
<a name="l00546"></a>00546 retval = malloc(<span class="keyword">sizeof</span>(<span class="keyword">struct</span> FONT));
<a name="l00547"></a>00547 retval->vtable = font_vtable_agl;
<a name="l00548"></a>00548 retval->height = MAX(f1->height, f2->height);
<a name="l00549"></a>00549
<a name="l00550"></a>00550 <span class="keywordflow">while</span> (fad1 || fad2) {
<a name="l00551"></a>00551 <span class="keywordflow">if</span> (fad1 && (!fad2 || fad1->start < fad2->start)) {
<a name="l00552"></a>00552 <span class="keywordflow">if</span> (fad) {
<a name="l00553"></a>00553 fad->next = copy_glyph_range(fad1, fad1->start, fad1->end,
<a name="l00554"></a>00554 &phony);
<a name="l00555"></a>00555 fad = fad->next;
<a name="l00556"></a>00556 fad->is_free_chunk = TRUE;
<a name="l00557"></a>00557 }
<a name="l00558"></a>00558 <span class="keywordflow">else</span> {
<a name="l00559"></a>00559 fad = copy_glyph_range(fad1, fad1->start, fad1->end, &phony);
<a name="l00560"></a>00560 retval->data = fad;
<a name="l00561"></a>00561 }
<a name="l00562"></a>00562 fad1 = fad1->next;
<a name="l00563"></a>00563 }
<a name="l00564"></a>00564 <span class="keywordflow">else</span> {
<a name="l00565"></a>00565 <span class="keywordflow">if</span> (fad) {
<a name="l00566"></a>00566 fad->next = copy_glyph_range(fad2, fad2->start, fad2->end,
<a name="l00567"></a>00567 &phony);
<a name="l00568"></a>00568 fad = fad->next;
<a name="l00569"></a>00569 fad->is_free_chunk = TRUE;
<a name="l00570"></a>00570 }
<a name="l00571"></a>00571 <span class="keywordflow">else</span> {
<a name="l00572"></a>00572 fad = copy_glyph_range(fad2, fad2->start, fad2->end, &phony);
<a name="l00573"></a>00573 retval->data = fad;
<a name="l00574"></a>00574 }
<a name="l00575"></a>00575 fad2 = fad2->next;
<a name="l00576"></a>00576 }
<a name="l00577"></a>00577 }
<a name="l00578"></a>00578
<a name="l00579"></a>00579 <span class="keywordflow">return</span> retval;
<a name="l00580"></a>00580 }
<a name="l00581"></a>00581
<a name="l00582"></a>00582
<a name="l00583"></a>00583
<a name="l00584"></a>00584 <span class="preprocessor">#if GET_ALLEGRO_VERSION() >= MAKE_VER(4, 2, 0)</span>
<a name="l00585"></a>00585 <span class="preprocessor"></span><span class="comment">/* agl_transpose_font:</span>
<a name="l00586"></a>00586 <span class="comment"> * font vtable entry</span>
<a name="l00587"></a>00587 <span class="comment"> * Transposes characters in a font.</span>
<a name="l00588"></a>00588 <span class="comment"> */</span>
<a name="l00589"></a>00589 <span class="keyword">static</span> <span class="keywordtype">int</span> agl_transpose_font(FONT *f, <span class="keywordtype">int</span> drange) {
<a name="l00590"></a>00590 FONT_AGL_DATA* fad = 0;
<a name="l00591"></a>00591
<a name="l00592"></a>00592 <span class="keywordflow">if</span> (!f)
<a name="l00593"></a>00593 <span class="keywordflow">return</span> -1;
<a name="l00594"></a>00594
<a name="l00595"></a>00595 fad = (FONT_AGL_DATA*)(f->data);
<a name="l00596"></a>00596
<a name="l00597"></a>00597 <span class="keywordflow">while</span>(fad) {
<a name="l00598"></a>00598 FONT_AGL_DATA* next = fad->next;
<a name="l00599"></a>00599 fad->start += drange;
<a name="l00600"></a>00600 fad->end += drange;
<a name="l00601"></a>00601 fad = next;
<a name="l00602"></a>00602 }
<a name="l00603"></a>00603
<a name="l00604"></a>00604 <span class="keywordflow">return</span> 0;
<a name="l00605"></a>00605 }
<a name="l00606"></a>00606 <span class="preprocessor">#endif</span>
<a name="l00607"></a>00607 <span class="preprocessor"></span>
<a name="l00608"></a>00608
<a name="l00609"></a>00609
<a name="l00610"></a>00610 <span class="comment">/* allegro_gl_convert_allegro_font_ex(FONT *f, int type, float scale, GLint format) */</span>
<a name="l00623"></a><a class="code" href="group__Text.html#gad01388c5188ae09628284aa2425acae9">00623</a> FONT *<a class="code" href="group__Text.html#gad01388c5188ae09628284aa2425acae9" title="Equivalent to:">allegro_gl_convert_allegro_font</a>(FONT *f, <span class="keywordtype">int</span> type, <span class="keywordtype">float</span> scale) {
<a name="l00624"></a>00624 GLint format = <a class="code" href="group__texture.html#ga2392fe7a8dd6db65532160821804aa68" title="Returns the OpenGL internal texture format for this bitmap.">allegro_gl_get_texture_format</a>(NULL);
<a name="l00625"></a>00625 <span class="keywordflow">return</span> <a class="code" href="group__Text.html#ga4986ec80f1a3362e47f7669461fef414" title="Converts a regular Allegro FONT to the AGL format for 3D display.">allegro_gl_convert_allegro_font_ex</a>(f, type, scale, format);
<a name="l00626"></a>00626 }
<a name="l00627"></a>00627
<a name="l00628"></a>00628
<a name="l00629"></a>00629
<a name="l00630"></a>00630 <span class="comment">/* allegro_gl_convert_allegro_font_ex(FONT *f, int type, float scale, GLint format) */</span>
<a name="l00688"></a><a class="code" href="group__Text.html#ga4986ec80f1a3362e47f7669461fef414">00688</a> FONT *<a class="code" href="group__Text.html#ga4986ec80f1a3362e47f7669461fef414" title="Converts a regular Allegro FONT to the AGL format for 3D display.">allegro_gl_convert_allegro_font_ex</a>(FONT *f, <span class="keywordtype">int</span> type, <span class="keywordtype">float</span> scale,
<a name="l00689"></a>00689 GLint format) {
<a name="l00690"></a>00690 <span class="keywordtype">int</span> max = 0, height = 0;
<a name="l00691"></a>00691 <span class="keywordtype">int</span> i;
<a name="l00692"></a>00692 FONT *dest;
<a name="l00693"></a>00693 FONT_AGL_DATA *destdata;
<a name="l00694"></a>00694 <span class="keywordtype">int</span> has_alpha = 0;
<a name="l00695"></a>00695
<a name="l00696"></a>00696 <span class="keyword">union </span>{
<a name="l00697"></a>00697 FONT_MONO_DATA* mf;
<a name="l00698"></a>00698 FONT_COLOR_DATA* cf;
<a name="l00699"></a>00699 <span class="keywordtype">void</span> *ptr;
<a name="l00700"></a>00700 } dat;
<a name="l00701"></a>00701
<a name="l00702"></a>00702 <span class="keywordflow">if</span> (!__allegro_gl_valid_context) {
<a name="l00703"></a>00703 <span class="keywordflow">return</span> NULL;
<a name="l00704"></a>00704 }
<a name="l00705"></a>00705
<a name="l00706"></a>00706 <span class="keywordflow">if</span> (!f) {
<a name="l00707"></a>00707 TRACE(PREFIX_E <span class="stringliteral">"convert_allegro_font: Null source\n"</span>);
<a name="l00708"></a>00708 <span class="keywordflow">return</span> NULL;
<a name="l00709"></a>00709 }
<a name="l00710"></a>00710
<a name="l00711"></a>00711 <span class="comment">/* Make sure it's an Allegro font - we don't want any surprises */</span>
<a name="l00712"></a>00712 <span class="preprocessor">#if GET_ALLEGRO_VERSION() >= MAKE_VER(4, 2, 1)</span>
<a name="l00713"></a>00713 <span class="preprocessor"></span> <span class="keywordflow">if</span> (f->vtable != font_vtable_mono && f->vtable != font_vtable_color && f->vtable != font_vtable_trans) {
<a name="l00714"></a>00714 <span class="preprocessor">#else</span>
<a name="l00715"></a>00715 <span class="preprocessor"></span> <span class="keywordflow">if</span> (f->vtable != font_vtable_mono && f->vtable != font_vtable_color) {
<a name="l00716"></a>00716 <span class="preprocessor">#endif</span>
<a name="l00717"></a>00717 <span class="preprocessor"></span> TRACE(PREFIX_I <span class="stringliteral">"convert_allegro_font: Source font is not "</span>
<a name="l00718"></a>00718 <span class="stringliteral">"in Allegro format\n"</span>);
<a name="l00719"></a>00719 <span class="keywordflow">return</span> NULL;
<a name="l00720"></a>00720 }
<a name="l00721"></a>00721
<a name="l00722"></a>00722 <span class="comment">/* No vector fonts allowed as destination */</span>
<a name="l00723"></a>00723 <span class="keywordflow">if</span> (type == <a class="code" href="group__Text.html#gaba7b8c941356029687ff4b4340e8b841" title="Indicates that you want fonts to be converted to an outline format.">AGL_FONT_TYPE_OUTLINE</a>) {
<a name="l00724"></a>00724 <span class="comment">/* Can't convert bitmap to vector font */</span>
<a name="l00725"></a>00725 TRACE(PREFIX_I <span class="stringliteral">"convert_allegro_font: Unable to convert a "</span>
<a name="l00726"></a>00726 <span class="stringliteral">"pixmap font to a vector font.\n"</span>);
<a name="l00727"></a>00727 <span class="keywordflow">return</span> NULL;
<a name="l00728"></a>00728 }
<a name="l00729"></a>00729
<a name="l00730"></a>00730 <span class="comment">/* Make sure the scaling factor is appropreate */</span>
<a name="l00731"></a>00731 <span class="keywordflow">if</span> (fabs(scale) < 0.001) {
<a name="l00732"></a>00732 TRACE(PREFIX_W <span class="stringliteral">"convert_allegro_font: Scaling factor might be "</span>
<a name="l00733"></a>00733 <span class="stringliteral">"too small: %f\n"</span>, scale);
<a name="l00734"></a>00734 }
<a name="l00735"></a>00735
<a name="l00736"></a>00736 <span class="comment">/* Count number of ranges */</span>
<a name="l00737"></a>00737 max = get_font_ranges(f);
<a name="l00738"></a>00738
<a name="l00739"></a>00739 <span class="comment">/* There should really be an API for this */</span>
<a name="l00740"></a>00740 dest = (FONT*)malloc(<span class="keyword">sizeof</span>(FONT));
<a name="l00741"></a>00741 <span class="keywordflow">if</span> (!dest) {
<a name="l00742"></a>00742 TRACE(PREFIX_E <span class="stringliteral">"convert_allegro_font: Ran out of memory "</span>
<a name="l00743"></a>00743 <span class="stringliteral">"while allocating %i bytes\n"</span>, (<span class="keywordtype">int</span>)<span class="keyword">sizeof</span>(FONT));
<a name="l00744"></a>00744 <span class="keywordflow">return</span> NULL;
<a name="l00745"></a>00745 }
<a name="l00746"></a>00746 destdata = (FONT_AGL_DATA*)malloc(<span class="keyword">sizeof</span>(FONT_AGL_DATA) * max);
<a name="l00747"></a>00747 <span class="keywordflow">if</span> (!destdata) {
<a name="l00748"></a>00748 TRACE(PREFIX_E <span class="stringliteral">"convert_allegro_font: Ran out of memory "</span>
<a name="l00749"></a>00749 <span class="stringliteral">"while allocating %i bytes\n"</span>, (<span class="keywordtype">int</span>)<span class="keyword">sizeof</span>(FONT_AGL_DATA) * max);
<a name="l00750"></a>00750 <span class="keywordflow">return</span> NULL;
<a name="l00751"></a>00751 }
<a name="l00752"></a>00752 memset(destdata, 0, <span class="keyword">sizeof</span>(FONT_AGL_DATA) * max);
<a name="l00753"></a>00753
<a name="l00754"></a>00754 <span class="comment">/* Construct the linked list */</span>
<a name="l00755"></a>00755 <span class="keywordflow">for</span> (i = 0; i < max - 1; i++) {
<a name="l00756"></a>00756 destdata[i].next = &destdata[i + 1];
<a name="l00757"></a>00757 }
<a name="l00758"></a>00758 destdata[max - 1].next = NULL;
<a name="l00759"></a>00759
<a name="l00760"></a>00760 <span class="comment">/* Set up the font */</span>
<a name="l00761"></a>00761 dest->data = destdata;
<a name="l00762"></a>00762 dest->vtable = font_vtable_agl;
<a name="l00763"></a>00763 dest->height = 0;
<a name="l00764"></a>00764
<a name="l00765"></a>00765 destdata->type = type;
<a name="l00766"></a>00766
<a name="l00767"></a>00767 <span class="keywordflow">if</span> (type == <a class="code" href="group__Text.html#gad2ebae17d2548a5befb888f8618f2206" title="Indicates that you don&#39;t really care how a font will be converted.">AGL_FONT_TYPE_DONT_CARE</a>) {
<a name="l00768"></a>00768 destdata->type = <a class="code" href="group__Text.html#ga92bf039bc7b06568273ee17f15cf6671" title="Indicates that you want fonts to be converted to a texture format.">AGL_FONT_TYPE_TEXTURED</a>;
<a name="l00769"></a>00769 }
<a name="l00770"></a>00770
<a name="l00771"></a>00771 <span class="preprocessor">#if GET_ALLEGRO_VERSION() >= MAKE_VER(4, 2, 1)</span>
<a name="l00772"></a>00772 <span class="preprocessor"></span> has_alpha = (f->vtable == font_vtable_trans);
<a name="l00773"></a>00773 <span class="preprocessor">#endif</span>
<a name="l00774"></a>00774 <span class="preprocessor"></span>
<a name="l00775"></a>00775 <span class="comment">/* Convert each range */</span>
<a name="l00776"></a>00776 dat.ptr = f->data;
<a name="l00777"></a>00777
<a name="l00778"></a>00778 <span class="keywordflow">while</span> (dat.ptr) {
<a name="l00779"></a>00779
<a name="l00780"></a>00780 destdata->has_alpha = has_alpha;
<a name="l00781"></a>00781
<a name="l00782"></a>00782 <span class="keywordflow">if</span> (type == <a class="code" href="group__Text.html#ga7ed8fdc1b0065d2fe584b15d69108b1a" title="Indicates that you want fonts to be converted to a bitmap format.">AGL_FONT_TYPE_BITMAP</a>) {
<a name="l00783"></a>00783 aglf_convert_allegro_font_to_bitmap(destdata, f, dat.ptr, &height);
<a name="l00784"></a>00784 }
<a name="l00785"></a>00785 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (type == <a class="code" href="group__Text.html#ga92bf039bc7b06568273ee17f15cf6671" title="Indicates that you want fonts to be converted to a texture format.">AGL_FONT_TYPE_TEXTURED</a>) {
<a name="l00786"></a>00786 aglf_convert_allegro_font_to_texture(&destdata, f, dat.ptr, &height,
<a name="l00787"></a>00787 scale, format);
<a name="l00788"></a>00788 }
<a name="l00789"></a>00789
<a name="l00790"></a>00790 <span class="keywordflow">if</span> (height > dest->height) {
<a name="l00791"></a>00791 dest->height = height;
<a name="l00792"></a>00792 }
<a name="l00793"></a>00793
<a name="l00794"></a>00794 dat.ptr = (is_mono_font(f) ? (<span class="keywordtype">void</span>*)dat.mf->next : (<span class="keywordtype">void</span>*)dat.cf->next);
<a name="l00795"></a>00795
<a name="l00796"></a>00796 destdata = destdata->next;
<a name="l00797"></a>00797 }
<a name="l00798"></a>00798
<a name="l00799"></a>00799 <span class="keywordflow">return</span> dest;
<a name="l00800"></a>00800 }
<a name="l00801"></a>00801
<a name="l00802"></a>00802
<a name="l00803"></a>00803
<a name="l00804"></a>00804 <span class="comment">/* QSort helper for sorting glyphs according to width,</span>
<a name="l00805"></a>00805 <span class="comment"> * then height - largest first.</span>
<a name="l00806"></a>00806 <span class="comment"> */</span>
<a name="l00807"></a>00807 <span class="keyword">static</span> <span class="keywordtype">int</span> sort_glyphs(<span class="keyword">const</span> <span class="keywordtype">void</span> *c1, <span class="keyword">const</span> <span class="keywordtype">void</span> *c2) {
<a name="l00808"></a>00808 AGL_GLYPH *g1 = (AGL_GLYPH*)c1;
<a name="l00809"></a>00809 AGL_GLYPH *g2 = (AGL_GLYPH*)c2;
<a name="l00810"></a>00810
<a name="l00811"></a>00811 <span class="keywordflow">if</span> (g1->w < g2->w) {
<a name="l00812"></a>00812 <span class="keywordflow">return</span> 1;
<a name="l00813"></a>00813 }
<a name="l00814"></a>00814 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (g1->w == g2->w) {
<a name="l00815"></a>00815 <span class="keywordflow">return</span> -g1->h + g2->h;
<a name="l00816"></a>00816 }
<a name="l00817"></a>00817 <span class="keywordflow">else</span> {
<a name="l00818"></a>00818 <span class="keywordflow">return</span> -1;
<a name="l00819"></a>00819 }
<a name="l00820"></a>00820 }
<a name="l00821"></a>00821
<a name="l00822"></a>00822
<a name="l00823"></a>00823
<a name="l00824"></a>00824 <span class="comment">/* QSort helper for unsorting glyphs.</span>
<a name="l00825"></a>00825 <span class="comment"> */</span>
<a name="l00826"></a>00826 <span class="keyword">static</span> <span class="keywordtype">int</span> unsort_glyphs(<span class="keyword">const</span> <span class="keywordtype">void</span> *c1, <span class="keyword">const</span> <span class="keywordtype">void</span> *c2) {
<a name="l00827"></a>00827 AGL_GLYPH *g1 = (AGL_GLYPH*)c1;
<a name="l00828"></a>00828 AGL_GLYPH *g2 = (AGL_GLYPH*)c2;
<a name="l00829"></a>00829
<a name="l00830"></a>00830 <span class="keywordflow">return</span> g1->glyph_num - g2->glyph_num;
<a name="l00831"></a>00831 }
<a name="l00832"></a>00832
<a name="l00833"></a>00833
<a name="l00834"></a>00834
<a name="l00835"></a>00835 <span class="comment">/* QSort helper for sorting textures by area.</span>
<a name="l00836"></a>00836 <span class="comment"> */</span>
<a name="l00837"></a>00837 <span class="keyword">static</span> <span class="keywordtype">int</span> sort_textures(<span class="keyword">const</span> <span class="keywordtype">void</span> *c1, <span class="keyword">const</span> <span class="keywordtype">void</span> *c2) {
<a name="l00838"></a>00838 texture_size *t1 = (texture_size*)c1;
<a name="l00839"></a>00839 texture_size *t2 = (texture_size*)c2;
<a name="l00840"></a>00840
<a name="l00841"></a>00841 <span class="keywordflow">return</span> t1->w * t1->h - t2->w * t2->h;
<a name="l00842"></a>00842 }
<a name="l00843"></a>00843
<a name="l00844"></a>00844
<a name="l00845"></a>00845
<a name="l00846"></a>00846 <span class="preprocessor">#ifdef SAVE_FONT_SCREENSHOT</span>
<a name="l00847"></a>00847 <span class="preprocessor"></span><span class="keyword">static</span> <span class="keywordtype">void</span> save_shot(BITMAP *bmp) {
<a name="l00848"></a>00848
<a name="l00849"></a>00849 <span class="keywordtype">int</span> i;
<a name="l00850"></a>00850 <span class="keywordtype">char</span> name[128];
<a name="l00851"></a>00851
<a name="l00852"></a>00852 <span class="keywordflow">for</span> (i = 0; i < 1000; i++) {
<a name="l00853"></a>00853 <span class="comment">/* TGA, in case it is a truecolor font with alpha */</span>
<a name="l00854"></a>00854 sprintf(name, <span class="stringliteral">"fonttest_%02i.tga"</span>, i);
<a name="l00855"></a>00855 <span class="keywordflow">if</span> (!exists(name)) {
<a name="l00856"></a>00856 save_tga(name, bmp, NULL);
<a name="l00857"></a>00857 <span class="keywordflow">break</span>;
<a name="l00858"></a>00858 }
<a name="l00859"></a>00859 }
<a name="l00860"></a>00860 }
<a name="l00861"></a>00861 <span class="preprocessor">#endif</span>
<a name="l00862"></a>00862 <span class="preprocessor"></span>
<a name="l00863"></a>00863
<a name="l00864"></a>00864
<a name="l00865"></a>00865 <span class="comment">/* Helper function. This will try to place all the glyphs in the bitmap the</span>
<a name="l00866"></a>00866 <span class="comment"> * best way it can</span>
<a name="l00867"></a>00867 <span class="comment"> */</span>
<a name="l00868"></a>00868 <span class="keyword">static</span> <span class="keywordtype">int</span> aglf_sort_out_glyphs(BITMAP *bmp, AGL_GLYPH *glyphs, <span class="keyword">const</span> <span class="keywordtype">int</span> beg,
<a name="l00869"></a>00869 <span class="keyword">const</span> <span class="keywordtype">int</span> end) {
<a name="l00870"></a>00870
<a name="l00871"></a>00871 <span class="keywordtype">int</span> i, j;
<a name="l00872"></a>00872 <span class="keywordtype">int</span> last_line = 0;
<a name="l00873"></a>00873 <span class="keywordtype">int</span> last_x = 0;
<a name="l00874"></a>00874
<a name="l00875"></a>00875 <span class="comment">/* We now try to make all the glyphs fit on the bitmap */</span>
<a name="l00876"></a>00876 <span class="keywordflow">for</span> (i = 0; i < end - beg; i++) {
<a name="l00877"></a>00877 <span class="keywordtype">int</span> collide = FALSE;
<a name="l00878"></a>00878
<a name="l00879"></a>00879 <span class="comment">/* Place glyphs on last_line */</span>
<a name="l00880"></a>00880 glyphs[i].x = last_x;
<a name="l00881"></a>00881 glyphs[i].y = last_line;
<a name="l00882"></a>00882
<a name="l00883"></a>00883 <span class="comment">/* Check for collision */</span>
<a name="l00884"></a>00884
<a name="l00885"></a>00885 <span class="keywordflow">for</span> (j = 0; j < i; j++) {
<a name="l00886"></a>00886 <span class="keywordflow">if</span> ((glyphs[i].x >= glyphs[j].x + glyphs[j].w)
<a name="l00887"></a>00887 || (glyphs[i].y >= glyphs[j].y + glyphs[j].h)
<a name="l00888"></a>00888 || (glyphs[j].x >= glyphs[i].x + glyphs[i].w)
<a name="l00889"></a>00889 || (glyphs[j].y >= glyphs[i].y + glyphs[i].h)) {
<a name="l00890"></a>00890 <span class="keywordflow">continue</span>;
<a name="l00891"></a>00891 }
<a name="l00892"></a>00892 last_x = glyphs[j].x + glyphs[j].w;
<a name="l00893"></a>00893 glyphs[i].x = last_x;
<a name="l00894"></a>00894 j = 0;
<a name="l00895"></a>00895 }
<a name="l00896"></a>00896
<a name="l00897"></a>00897 <span class="keywordflow">if</span> ((last_x + glyphs[i].w > bmp->w)
<a name="l00898"></a>00898 || (last_line + glyphs[i].h > bmp->h)) {
<a name="l00899"></a>00899 collide = TRUE;
<a name="l00900"></a>00900 }
<a name="l00901"></a>00901
<a name="l00902"></a>00902 <span class="keywordflow">if</span> (collide) {
<a name="l00903"></a>00903 <span class="comment">/* If there was a collision, we need to find the sprite with</span>
<a name="l00904"></a>00904 <span class="comment"> * the smallest height that is still grater than last_line.</span>
<a name="l00905"></a>00905 <span class="comment"> * We also need to redo this glyph.</span>
<a name="l00906"></a>00906 <span class="comment"> */</span>
<a name="l00907"></a>00907 <span class="keywordtype">int</span> min_line = bmp->h + 1;
<a name="l00908"></a>00908 <span class="keywordtype">int</span> min_glyph = -1;
<a name="l00909"></a>00909
<a name="l00910"></a>00910 <span class="keywordflow">for</span> (j = 0; j < i; j++) {
<a name="l00911"></a>00911 <span class="keywordflow">if</span> ( glyphs[j].y + glyphs[j].h < min_line
<a name="l00912"></a>00912 && glyphs[j].y + glyphs[j].h
<a name="l00913"></a>00913 > last_line - FONT_CHARACTER_SPACING) {
<a name="l00914"></a>00914
<a name="l00915"></a>00915 min_line = glyphs[j].y + glyphs[j].h
<a name="l00916"></a>00916 + FONT_CHARACTER_SPACING;
<a name="l00917"></a>00917 min_glyph = j;
<a name="l00918"></a>00918 }
<a name="l00919"></a>00919 }
<a name="l00920"></a>00920 <span class="comment">/* If it can't possibly all fit, failure */</span>
<a name="l00921"></a>00921 <span class="keywordflow">if</span> (min_glyph == -1) {
<a name="l00922"></a>00922 TRACE(PREFIX_I <span class="stringliteral">"sort_out_glyphs: Unable to fit all glyphs into "</span>
<a name="l00923"></a>00923 <span class="stringliteral">"the texture.\n"</span>);
<a name="l00924"></a>00924 <span class="keywordflow">return</span> FALSE;
<a name="l00925"></a>00925 }
<a name="l00926"></a>00926 <span class="comment">/* Otherwise, start over at the top of that glyph */</span>
<a name="l00927"></a>00927 last_x = glyphs[min_glyph].x;
<a name="l00928"></a>00928 last_line = min_line;
<a name="l00929"></a>00929
<a name="l00930"></a>00930 <span class="comment">/* Redo this glyph */</span>
<a name="l00931"></a>00931 i--;
<a name="l00932"></a>00932 }
<a name="l00933"></a>00933 <span class="keywordflow">else</span> {
<a name="l00934"></a>00934 last_x += glyphs[i].w + FONT_CHARACTER_SPACING;
<a name="l00935"></a>00935 }
<a name="l00936"></a>00936 }
<a name="l00937"></a>00937
<a name="l00938"></a>00938 <span class="comment">/* All ok */</span>
<a name="l00939"></a>00939 <span class="keywordflow">return</span> TRUE;
<a name="l00940"></a>00940 }
<a name="l00941"></a>00941
<a name="l00942"></a>00942
<a name="l00943"></a>00943
<a name="l00944"></a>00944 <span class="keyword">static</span> <span class="keywordtype">int</span> split_font(FONT *f, <span class="keywordtype">void</span> *source, <span class="keywordtype">void</span> **dest1, <span class="keywordtype">void</span> **dest2) {
<a name="l00945"></a>00945
<a name="l00946"></a>00946 <span class="keyword">union </span>mixed_ptr range1, range2, src;
<a name="l00947"></a>00947 <span class="keywordtype">int</span> colored;
<a name="l00948"></a>00948 <span class="keywordtype">int</span> i;
<a name="l00949"></a>00949
<a name="l00950"></a>00950 (*dest1) = NULL;
<a name="l00951"></a>00951 (*dest2) = NULL;
<a name="l00952"></a>00952 src.ptr = source;
<a name="l00953"></a>00953
<a name="l00954"></a>00954 colored = (is_mono_font(f) ? FALSE : TRUE);
<a name="l00955"></a>00955
<a name="l00956"></a>00956 <span class="comment">/* Allocate the ranges that we need */</span>
<a name="l00957"></a>00957 range1.ptr = malloc(colored ? <span class="keyword">sizeof</span>(FONT_COLOR_DATA)
<a name="l00958"></a>00958 : <span class="keyword">sizeof</span>(FONT_MONO_DATA));
<a name="l00959"></a>00959 <span class="keywordflow">if</span> (!range1.ptr) {
<a name="l00960"></a>00960 TRACE(PREFIX_E <span class="stringliteral">"split_font() - Ran out of memory while "</span>
<a name="l00961"></a>00961 <span class="stringliteral">"trying ot allocate %i bytes.\n"</span>,
<a name="l00962"></a>00962 colored ? (<span class="keywordtype">int</span>)<span class="keyword">sizeof</span>(FONT_COLOR_DATA)
<a name="l00963"></a>00963 : (<span class="keywordtype">int</span>)<span class="keyword">sizeof</span>(FONT_MONO_DATA));
<a name="l00964"></a>00964 <span class="keywordflow">return</span> FALSE;
<a name="l00965"></a>00965 }
<a name="l00966"></a>00966
<a name="l00967"></a>00967 range2.ptr = malloc(colored ? <span class="keyword">sizeof</span>(FONT_COLOR_DATA)
<a name="l00968"></a>00968 : <span class="keyword">sizeof</span>(FONT_MONO_DATA));
<a name="l00969"></a>00969 <span class="keywordflow">if</span> (!range2.ptr) {
<a name="l00970"></a>00970 TRACE(PREFIX_E <span class="stringliteral">"split_font() - Ran out of memory while "</span>
<a name="l00971"></a>00971 <span class="stringliteral">"trying to allocate %i bytes.\n"</span>,
<a name="l00972"></a>00972 colored ? (<span class="keywordtype">int</span>)<span class="keyword">sizeof</span>(FONT_COLOR_DATA)
<a name="l00973"></a>00973 : (<span class="keywordtype">int</span>)<span class="keyword">sizeof</span>(FONT_MONO_DATA));
<a name="l00974"></a>00974 free(range1.ptr);
<a name="l00975"></a>00975 <span class="keywordflow">return</span> FALSE;
<a name="l00976"></a>00976 }
<a name="l00977"></a>00977
<a name="l00978"></a>00978 (*dest1) = range1.ptr;
<a name="l00979"></a>00979 (*dest2) = range2.ptr;
<a name="l00980"></a>00980
<a name="l00981"></a>00981 <span class="comment">/* Now we split up the range */</span>
<a name="l00982"></a>00982 <span class="keywordflow">if</span> (colored) {
<a name="l00983"></a>00983 <span class="comment">/* Half the range */</span>
<a name="l00984"></a>00984 <span class="keywordtype">int</span> mid = src.cf->begin + (src.cf->end - src.cf->begin) / 2;
<a name="l00985"></a>00985
<a name="l00986"></a>00986 range1.cf->begin = src.cf->begin;
<a name="l00987"></a>00987 range1.cf->end = mid;
<a name="l00988"></a>00988 range2.cf->begin = mid;
<a name="l00989"></a>00989 range2.cf->end = src.cf->end;
<a name="l00990"></a>00990
<a name="l00991"></a>00991 range1.cf->next = NULL;
<a name="l00992"></a>00992 range2.cf->next = NULL;
<a name="l00993"></a>00993
<a name="l00994"></a>00994 <span class="comment">/* Split up the bitmaps */</span>
<a name="l00995"></a>00995 range1.cf->bitmaps = malloc(<span class="keyword">sizeof</span>(BITMAP*)
<a name="l00996"></a>00996 * (range1.cf->end - range1.cf->begin));
<a name="l00997"></a>00997 <span class="keywordflow">if</span> (!range1.cf->bitmaps) {
<a name="l00998"></a>00998 TRACE(PREFIX_E <span class="stringliteral">"split_font() - Ran out of memory "</span>
<a name="l00999"></a>00999 <span class="stringliteral">"while trying to allocate %i bytes.\n"</span>,
<a name="l01000"></a>01000 (<span class="keywordtype">int</span>)<span class="keyword">sizeof</span>(BITMAP*) * (range1.cf->end - range1.cf->begin));
<a name="l01001"></a>01001 free(range1.ptr);
<a name="l01002"></a>01002 free(range2.ptr);
<a name="l01003"></a>01003 <span class="keywordflow">return</span> FALSE;
<a name="l01004"></a>01004 }
<a name="l01005"></a>01005
<a name="l01006"></a>01006 range2.cf->bitmaps = malloc(<span class="keyword">sizeof</span>(BITMAP*)
<a name="l01007"></a>01007 * (range2.cf->end - range2.cf->begin));
<a name="l01008"></a>01008 <span class="keywordflow">if</span> (!range2.cf->bitmaps) {
<a name="l01009"></a>01009 TRACE(PREFIX_E <span class="stringliteral">"split_font() - Ran out of memory "</span>
<a name="l01010"></a>01010 <span class="stringliteral">"while trying to allocate %i bytes.\n"</span>,
<a name="l01011"></a>01011 (<span class="keywordtype">int</span>)<span class="keyword">sizeof</span>(BITMAP*) * (range2.cf->end - range2.cf->begin));
<a name="l01012"></a>01012 free(range1.cf->bitmaps);
<a name="l01013"></a>01013 free(range1.ptr);
<a name="l01014"></a>01014 free(range2.ptr);
<a name="l01015"></a>01015 <span class="keywordflow">return</span> FALSE;
<a name="l01016"></a>01016 }
<a name="l01017"></a>01017
<a name="l01018"></a>01018
<a name="l01019"></a>01019 <span class="keywordflow">for</span> (i = 0; i < (range1.cf->end - range1.cf->begin); i++) {
<a name="l01020"></a>01020 range1.cf->bitmaps[i] = src.cf->bitmaps[i];
<a name="l01021"></a>01021 }
<a name="l01022"></a>01022 <span class="keywordflow">for</span> (i = 0; i < (range2.cf->end - range2.cf->begin); i++) {
<a name="l01023"></a>01023 range2.cf->bitmaps[i] =
<a name="l01024"></a>01024 src.cf->bitmaps[i + range2.cf->begin - range1.cf->begin];
<a name="l01025"></a>01025 }
<a name="l01026"></a>01026 }
<a name="l01027"></a>01027 <span class="keywordflow">else</span> {
<a name="l01028"></a>01028 <span class="comment">/* Half the range */</span>
<a name="l01029"></a>01029 <span class="keywordtype">int</span> mid = src.mf->begin + (src.mf->end - src.mf->begin) / 2;
<a name="l01030"></a>01030
<a name="l01031"></a>01031 range1.mf->begin = src.mf->begin;
<a name="l01032"></a>01032 range1.mf->end = mid;
<a name="l01033"></a>01033 range2.mf->begin = mid;
<a name="l01034"></a>01034 range2.mf->end = src.mf->end;
<a name="l01035"></a>01035
<a name="l01036"></a>01036 range1.mf->next = NULL;
<a name="l01037"></a>01037 range2.mf->next = NULL;
<a name="l01038"></a>01038
<a name="l01039"></a>01039 <span class="comment">/* Split up the bitmaps */</span>
<a name="l01040"></a>01040 range1.mf->glyphs = malloc(<span class="keyword">sizeof</span>(FONT_GLYPH*)
<a name="l01041"></a>01041 * (range1.mf->end - range1.mf->begin));
<a name="l01042"></a>01042 <span class="keywordflow">if</span> (!range1.mf->glyphs) {
<a name="l01043"></a>01043 TRACE(PREFIX_E <span class="stringliteral">"split_font() - Ran out of memory "</span>
<a name="l01044"></a>01044 <span class="stringliteral">"while trying to allocate %i bytes.\n"</span>,
<a name="l01045"></a>01045 (<span class="keywordtype">int</span>)<span class="keyword">sizeof</span>(FONT_GLYPH*) * (range1.mf->end - range1.mf->begin));
<a name="l01046"></a>01046 free(range1.ptr);
<a name="l01047"></a>01047 free(range2.ptr);
<a name="l01048"></a>01048 <span class="keywordflow">return</span> FALSE;
<a name="l01049"></a>01049 }
<a name="l01050"></a>01050
<a name="l01051"></a>01051 range2.mf->glyphs = malloc(<span class="keyword">sizeof</span>(FONT_GLYPH*)
<a name="l01052"></a>01052 * (range2.mf->end - range2.mf->begin));
<a name="l01053"></a>01053 <span class="keywordflow">if</span> (!range2.mf->glyphs) {
<a name="l01054"></a>01054 TRACE(PREFIX_E <span class="stringliteral">"split_font() - Ran out of memory "</span>
<a name="l01055"></a>01055 <span class="stringliteral">"while trying to allocate %i bytes.\n"</span>,
<a name="l01056"></a>01056 (<span class="keywordtype">int</span>)<span class="keyword">sizeof</span>(FONT_GLYPH*) * (range2.mf->end - range2.mf->begin));
<a name="l01057"></a>01057 free(range1.mf->glyphs);
<a name="l01058"></a>01058 free(range1.ptr);
<a name="l01059"></a>01059 free(range2.ptr);
<a name="l01060"></a>01060 <span class="keywordflow">return</span> FALSE;
<a name="l01061"></a>01061 }
<a name="l01062"></a>01062
<a name="l01063"></a>01063 <span class="keywordflow">for</span> (i = 0; i < (range1.mf->end - range1.mf->begin); i++) {
<a name="l01064"></a>01064 range1.mf->glyphs[i] = src.mf->glyphs[i];
<a name="l01065"></a>01065 }
<a name="l01066"></a>01066 <span class="keywordflow">for</span> (i = 0; i < (range2.mf->end - range2.mf->begin); i++) {
<a name="l01067"></a>01067 range2.mf->glyphs[i] =
<a name="l01068"></a>01068 src.mf->glyphs[i + range2.mf->begin - range1.mf->begin];
<a name="l01069"></a>01069 }
<a name="l01070"></a>01070 }
<a name="l01071"></a>01071
<a name="l01072"></a>01072 <span class="keywordflow">return</span> TRUE;
<a name="l01073"></a>01073 }
<a name="l01074"></a>01074
<a name="l01075"></a>01075
<a name="l01076"></a>01076
<a name="l01077"></a>01077 <span class="comment">/* Destroys a split font */</span>
<a name="l01078"></a>01078 <span class="keyword">static</span> <span class="keywordtype">void</span> destroy_split_font(FONT *f, <span class="keyword">union</span> mixed_ptr range1,
<a name="l01079"></a>01079 <span class="keyword">union</span> mixed_ptr range2) {
<a name="l01080"></a>01080
<a name="l01081"></a>01081 <span class="keywordflow">if</span> (!is_mono_font(f)) {
<a name="l01082"></a>01082 free(range1.cf->bitmaps);
<a name="l01083"></a>01083 free(range2.cf->bitmaps);
<a name="l01084"></a>01084 }
<a name="l01085"></a>01085 <span class="keywordflow">else</span> {
<a name="l01086"></a>01086 free(range1.mf->glyphs);
<a name="l01087"></a>01087 free(range2.mf->glyphs);
<a name="l01088"></a>01088 }
<a name="l01089"></a>01089
<a name="l01090"></a>01090 free(range1.ptr);
<a name="l01091"></a>01091 free(range2.ptr);
<a name="l01092"></a>01092
<a name="l01093"></a>01093 <span class="keywordflow">return</span>;
<a name="l01094"></a>01094 }
<a name="l01095"></a>01095
<a name="l01096"></a>01096
<a name="l01097"></a>01097
<a name="l01098"></a>01098 <span class="keyword">static</span> <span class="keywordtype">int</span> do_crop_font_range(FONT *f, AGL_GLYPH *glyphs, <span class="keywordtype">int</span> beg, <span class="keywordtype">int</span> end) {
<a name="l01099"></a>01099
<a name="l01100"></a>01100 <span class="keywordtype">int</span> i, j, k;
<a name="l01101"></a>01101 <span class="keywordtype">int</span> max = end - beg;
<a name="l01102"></a>01102 <span class="keywordtype">char</span> buf[32];
<a name="l01103"></a>01103
<a name="l01104"></a>01104 <span class="comment">/* Allocate a temp bitmap to work with */</span>
<a name="l01105"></a>01105 BITMAP *temp = create_bitmap(32, 32);
<a name="l01106"></a>01106
<a name="l01107"></a>01107 <span class="keywordflow">if</span> (!temp) {
<a name="l01108"></a>01108 TRACE(PREFIX_E <span class="stringliteral">"crop_font_range - Unable to create "</span>
<a name="l01109"></a>01109 <span class="stringliteral">"bitmap of size: %ix%i!\n"</span>, 32, 32);
<a name="l01110"></a>01110 <span class="keywordflow">goto</span> error;
<a name="l01111"></a>01111 }
<a name="l01112"></a>01112
<a name="l01113"></a>01113 <span class="comment">/* Crop glyphs */</span>
<a name="l01114"></a>01114 <span class="keywordflow">for</span> (i = 0; i < max; i++) {
<a name="l01115"></a>01115 <span class="keywordtype">int</span> used = 0;
<a name="l01116"></a>01116
<a name="l01117"></a>01117 <span class="keywordflow">if</span> (glyphs[i].w > temp->w || glyphs[i].h > temp->h) {
<a name="l01118"></a>01118 <span class="keywordtype">int</span> old_w = temp->w, old_h = temp->h;
<a name="l01119"></a>01119 destroy_bitmap(temp);
<a name="l01120"></a>01120 temp = create_bitmap(old_w * 2, old_h * 2);
<a name="l01121"></a>01121 <span class="keywordflow">if</span> (!temp) {
<a name="l01122"></a>01122 TRACE(PREFIX_E <span class="stringliteral">"crop_font_range - Unable to "</span>
<a name="l01123"></a>01123 <span class="stringliteral">"create bitmap of size: %ix%i!\n"</span>, old_w * 2, old_h * 2);
<a name="l01124"></a>01124 <span class="keywordflow">goto</span> error;
<a name="l01125"></a>01125 }
<a name="l01126"></a>01126 }
<a name="l01127"></a>01127 clear(temp);
<a name="l01128"></a>01128
<a name="l01129"></a>01129 usetc(buf + usetc(buf, glyphs[i].glyph_num + beg), 0);
<a name="l01130"></a>01130
<a name="l01131"></a>01131 textout_ex(temp, f, buf, 0, 0,
<a name="l01132"></a>01132 makecol_depth(bitmap_color_depth(temp), 255, 255, 255), 0);
<a name="l01133"></a>01133
<a name="l01134"></a>01134 <span class="comment">/* Crop top */</span>
<a name="l01135"></a>01135 <span class="keywordflow">for</span> (j = 0; j < glyphs[i].h; j++) {
<a name="l01136"></a>01136 used = 0;
<a name="l01137"></a>01137
<a name="l01138"></a>01138 <span class="keywordflow">for</span> (k = 0; k < glyphs[i].w; k++) {
<a name="l01139"></a>01139 <span class="keywordflow">if</span> (getpixel(temp, k, j)) {
<a name="l01140"></a>01140 used = 1;
<a name="l01141"></a>01141 glyphs[i].offset_y += j;
<a name="l01142"></a>01142 glyphs[i].h -= j;
<a name="l01143"></a>01143 <span class="keywordflow">break</span>;
<a name="l01144"></a>01144 }
<a name="l01145"></a>01145 }
<a name="l01146"></a>01146 <span class="keywordflow">if</span> (used)
<a name="l01147"></a>01147 <span class="keywordflow">break</span>;
<a name="l01148"></a>01148 }
<a name="l01149"></a>01149
<a name="l01150"></a>01150 <span class="comment">/* If just the top crop killed our glyph, then skip it entirely */</span>
<a name="l01151"></a>01151 <span class="keywordflow">if</span> (!used) {
<a name="l01152"></a>01152 TRACE(PREFIX_I <span class="stringliteral">"crop_font_range: skipping glyph %i\n"</span>, i);
<a name="l01153"></a>01153 glyphs[i].offset_y = 0;
<a name="l01154"></a>01154 glyphs[i].offset_h = glyphs[i].h - 1;
<a name="l01155"></a>01155 glyphs[i].offset_w = glyphs[i].w - 2;
<a name="l01156"></a>01156 glyphs[i].h = 1;
<a name="l01157"></a>01157 glyphs[i].w = 1;
<a name="l01158"></a>01158 <span class="keywordflow">continue</span>;
<a name="l01159"></a>01159 }
<a name="l01160"></a>01160
<a name="l01161"></a>01161 <span class="comment">/* Crop bottom */</span>
<a name="l01162"></a>01162 j = glyphs[i].h + glyphs[i].offset_y - 1;
<a name="l01163"></a>01163 <span class="keywordflow">for</span> ( <span class="comment">/* above */</span>; j >= glyphs[i].offset_y; j--) {
<a name="l01164"></a>01164 used = 0;
<a name="l01165"></a>01165
<a name="l01166"></a>01166 <span class="keywordflow">for</span> (k = 0; k < glyphs[i].w; k++) {
<a name="l01167"></a>01167 <span class="keywordflow">if</span> (getpixel(temp, k, j)) {
<a name="l01168"></a>01168 used = 1;
<a name="l01169"></a>01169 glyphs[i].offset_h +=
<a name="l01170"></a>01170 glyphs[i].h + glyphs[i].offset_y - j - 2;
<a name="l01171"></a>01171 glyphs[i].h -= glyphs[i].h + glyphs[i].offset_y - j - 1;
<a name="l01172"></a>01172 <span class="keywordflow">break</span>;
<a name="l01173"></a>01173 }
<a name="l01174"></a>01174 }
<a name="l01175"></a>01175 <span class="keywordflow">if</span> (used)
<a name="l01176"></a>01176 <span class="keywordflow">break</span>;
<a name="l01177"></a>01177 }
<a name="l01178"></a>01178
<a name="l01179"></a>01179 <span class="comment">/* Crop Left */</span>
<a name="l01180"></a>01180 <span class="keywordflow">for</span> (j = 0; j < glyphs[i].w; j++) {
<a name="l01181"></a>01181 used = 0;
<a name="l01182"></a>01182
<a name="l01183"></a>01183 k = MAX(glyphs[i].offset_y - 1, 0);
<a name="l01184"></a>01184 <span class="keywordflow">for</span> (<span class="comment">/* above */</span>; k < glyphs[i].offset_y + glyphs[i].h + 1; k++) {
<a name="l01185"></a>01185 <span class="keywordflow">if</span> (getpixel(temp, j, k)) {
<a name="l01186"></a>01186 used = 1;
<a name="l01187"></a>01187 glyphs[i].offset_x += j;
<a name="l01188"></a>01188 glyphs[i].w -= j;
<a name="l01189"></a>01189 <span class="keywordflow">break</span>;
<a name="l01190"></a>01190 }
<a name="l01191"></a>01191 }
<a name="l01192"></a>01192 <span class="keywordflow">if</span> (used)
<a name="l01193"></a>01193 <span class="keywordflow">break</span>;
<a name="l01194"></a>01194 }
<a name="l01195"></a>01195
<a name="l01196"></a>01196 <span class="comment">/* Crop Right */</span>
<a name="l01197"></a>01197 j = glyphs[i].w + glyphs[i].offset_x - 1;
<a name="l01198"></a>01198 <span class="keywordflow">for</span> (<span class="comment">/* above */</span>; j >= glyphs[i].offset_x; j--) {
<a name="l01199"></a>01199 used = 0;
<a name="l01200"></a>01200
<a name="l01201"></a>01201 k = MAX(glyphs[i].offset_y - 1, 0);
<a name="l01202"></a>01202 <span class="keywordflow">for</span> (<span class="comment">/* above */</span>; k < glyphs[i].offset_y + glyphs[i].h + 1; k++) {
<a name="l01203"></a>01203 <span class="keywordflow">if</span> (getpixel(temp, j, k)) {
<a name="l01204"></a>01204 used = 1;
<a name="l01205"></a>01205 glyphs[i].offset_w +=
<a name="l01206"></a>01206 glyphs[i].w + glyphs[i].offset_x - 1 - j;
<a name="l01207"></a>01207 glyphs[i].w -= glyphs[i].w + glyphs[i].offset_x - j - 1;
<a name="l01208"></a>01208 <span class="keywordflow">break</span>;
<a name="l01209"></a>01209 }
<a name="l01210"></a>01210 }
<a name="l01211"></a>01211 <span class="keywordflow">if</span> (used)
<a name="l01212"></a>01212 <span class="keywordflow">break</span>;
<a name="l01213"></a>01213 }
<a name="l01214"></a>01214 <span class="preprocessor">#ifdef LOGLEVEL</span>
<a name="l01215"></a>01215 <span class="preprocessor"></span> TRACE(PREFIX_I <span class="stringliteral">"crop_font_range: Glyph %i (%c) offs: x: %i y: %i, "</span>
<a name="l01216"></a>01216 <span class="stringliteral">"w: %i h: %i, offs: w: %i h: %i\n"</span>, i, i + beg,
<a name="l01217"></a>01217 glyphs[i].offset_x, glyphs[i].offset_y, glyphs[i].w, glyphs[i].h,
<a name="l01218"></a>01218 glyphs[i].offset_w, glyphs[i].offset_h);
<a name="l01219"></a>01219 <span class="preprocessor">#endif</span>
<a name="l01220"></a>01220 <span class="preprocessor"></span> }
<a name="l01221"></a>01221
<a name="l01222"></a>01222 destroy_bitmap(temp);
<a name="l01223"></a>01223
<a name="l01224"></a>01224 <span class="keywordflow">return</span> TRUE;
<a name="l01225"></a>01225
<a name="l01226"></a>01226 error:
<a name="l01227"></a>01227 <span class="keywordflow">if</span> (temp) {
<a name="l01228"></a>01228 destroy_bitmap(temp);
<a name="l01229"></a>01229 }
<a name="l01230"></a>01230
<a name="l01231"></a>01231 <span class="keywordflow">return</span> FALSE;
<a name="l01232"></a>01232 }
<a name="l01233"></a>01233
<a name="l01234"></a>01234
<a name="l01235"></a>01235
<a name="l01236"></a>01236 <span class="comment">/* Crops a font over a particular range */</span>
<a name="l01237"></a>01237 <span class="keyword">static</span> <span class="keywordtype">int</span> crop_font_range(FONT *f, <span class="keywordtype">void</span> *src, <span class="keywordtype">int</span> beg, <span class="keywordtype">int</span> end,
<a name="l01238"></a>01238 AGL_GLYPH *glyphs,
<a name="l01239"></a>01239 <span class="keywordtype">int</span> *net_area, <span class="keywordtype">int</span> *gross_area,
<a name="l01240"></a>01240 <span class="keywordtype">int</span> *max_w, <span class="keywordtype">int</span> *max_h) {
<a name="l01241"></a>01241
<a name="l01242"></a>01242 <span class="keywordtype">int</span> i;
<a name="l01243"></a>01243 <span class="keywordtype">int</span> crop = 1;
<a name="l01244"></a>01244 <span class="keywordtype">int</span> max = end - beg;
<a name="l01245"></a>01245 <span class="keywordtype">int</span> ret = TRUE;
<a name="l01246"></a>01246
<a name="l01247"></a>01247 <span class="keyword">union </span>mixed_ptr dat;
<a name="l01248"></a>01248 dat.ptr = src;
<a name="l01249"></a>01249
<a name="l01250"></a>01250 <span class="comment">/* Disable cropping for trucolor fonts. */</span>
<a name="l01251"></a>01251 <span class="keywordflow">if</span> (is_color_font(f)) {
<a name="l01252"></a>01252 FONT_COLOR_DATA *fcd = f->data;
<a name="l01253"></a>01253 <span class="keywordflow">if</span> (bitmap_color_depth(fcd->bitmaps[0]) != 8) {
<a name="l01254"></a>01254 crop = 0;
<a name="l01255"></a>01255 }
<a name="l01256"></a>01256 }
<a name="l01257"></a>01257
<a name="l01258"></a>01258 <span class="comment">/* Load default sizes */</span>
<a name="l01259"></a>01259 <span class="keywordflow">for</span> (i = 0; i < max; i++) {
<a name="l01260"></a>01260 glyphs[i].glyph_num = i;
<a name="l01261"></a>01261
<a name="l01262"></a>01262 <span class="keywordflow">if</span> (is_mono_font(f)) {
<a name="l01263"></a>01263 glyphs[i].w = dat.mf->glyphs[i]->w + 1;
<a name="l01264"></a>01264 glyphs[i].h = dat.mf->glyphs[i]->h + 1;
<a name="l01265"></a>01265 } <span class="keywordflow">else</span> {
<a name="l01266"></a>01266 glyphs[i].w = dat.cf->bitmaps[i]->w + 1;
<a name="l01267"></a>01267 glyphs[i].h = dat.cf->bitmaps[i]->h + 1;
<a name="l01268"></a>01268 }
<a name="l01269"></a>01269 glyphs[i].offset_w = -1;
<a name="l01270"></a>01270 glyphs[i].offset_h = -1;
<a name="l01271"></a>01271
<a name="l01272"></a>01272 <span class="comment">/* Not placed yet */</span>
<a name="l01273"></a>01273 glyphs[i].x = -1;
<a name="l01274"></a>01274 }
<a name="l01275"></a>01275
<a name="l01276"></a>01276 <span class="keywordflow">if</span> (crop) {
<a name="l01277"></a>01277 ret = do_crop_font_range(f, glyphs, beg, end);
<a name="l01278"></a>01278 }
<a name="l01279"></a>01279
<a name="l01280"></a>01280 (*gross_area) = 0;
<a name="l01281"></a>01281 (*net_area) = 0;
<a name="l01282"></a>01282 (*max_w) = 0;
<a name="l01283"></a>01283 (*max_h) = 0;
<a name="l01284"></a>01284
<a name="l01285"></a>01285 <span class="comment">/* Find max w and h, total area covered by the bitmaps, and number of</span>
<a name="l01286"></a>01286 <span class="comment"> * glyphs</span>
<a name="l01287"></a>01287 <span class="comment"> */</span>
<a name="l01288"></a>01288 <span class="keywordflow">for</span> (i = 0; i < max; i++) {
<a name="l01289"></a>01289 <span class="keywordflow">if</span> (glyphs[i].w > *max_w) (*max_w) = glyphs[i].w;
<a name="l01290"></a>01290 <span class="keywordflow">if</span> (glyphs[i].h > *max_h) (*max_h) = glyphs[i].h;
<a name="l01291"></a>01291 (*net_area) += glyphs[i].w * glyphs[i].h;
<a name="l01292"></a>01292 (*gross_area) += (glyphs[i].w + FONT_CHARACTER_SPACING)
<a name="l01293"></a>01293 * (glyphs[i].h + FONT_CHARACTER_SPACING);
<a name="l01294"></a>01294 }
<a name="l01295"></a>01295 <span class="keywordflow">return</span> ret;
<a name="l01296"></a>01296
<a name="l01297"></a>01297 }
<a name="l01298"></a>01298
<a name="l01299"></a>01299
<a name="l01300"></a>01300
<a name="l01301"></a>01301 <span class="comment">/* Tries to find a texture that will fit the font</span>
<a name="l01302"></a>01302 <span class="comment"> */</span>
<a name="l01303"></a>01303 <span class="keyword">static</span> BITMAP* look_for_texture(<span class="keywordtype">int</span> beg, <span class="keywordtype">int</span> end, AGL_GLYPH *glyphs,
<a name="l01304"></a>01304 <span class="keywordtype">int</span> max_w, <span class="keywordtype">int</span> max_h, <span class="keywordtype">int</span> total_area, GLint format, <span class="keywordtype">int</span> has_alpha) {
<a name="l01305"></a>01305
<a name="l01306"></a>01306 BITMAP *bmp = NULL;
<a name="l01307"></a>01307 <span class="keywordtype">int</span> i, j;
<a name="l01308"></a>01308
<a name="l01309"></a>01309 <span class="comment">/* Max texture size (1 << n) */</span>
<a name="l01310"></a>01310 <span class="comment">/* XXX <rohannessian> We should use ARB_np2 if we can</span>
<a name="l01311"></a>01311 <span class="comment"> *</span>
<a name="l01312"></a>01312 <span class="comment"> * Other note: w*h shouldn't exceed 31 bits; otherwise, we get funny</span>
<a name="l01313"></a>01313 <span class="comment"> * behavior on 32-bit architectures. Limit texture sizes to 32k*32k</span>
<a name="l01314"></a>01314 <span class="comment"> * (30 bits).</span>
<a name="l01315"></a>01315 <span class="comment"> */</span>
<a name="l01316"></a>01316 <span class="preprocessor">#define MIN_TEXTURE_SIZE 2</span>
<a name="l01317"></a>01317 <span class="preprocessor"></span><span class="preprocessor">#define NUM_TEXTURE_SIZE 13</span>
<a name="l01318"></a>01318 <span class="preprocessor"></span> texture_size texture_sizes[NUM_TEXTURE_SIZE * NUM_TEXTURE_SIZE];
<a name="l01319"></a>01319
<a name="l01320"></a>01320 <span class="comment">/* Set up texture sizes */</span>
<a name="l01321"></a>01321 <span class="keywordflow">for</span> (i = 0; i < NUM_TEXTURE_SIZE; i++) {
<a name="l01322"></a>01322 <span class="keywordflow">for</span> (j = 0; j < NUM_TEXTURE_SIZE; j++) {
<a name="l01323"></a>01323 texture_sizes[j + i * NUM_TEXTURE_SIZE].w =
<a name="l01324"></a>01324 1 << (j + MIN_TEXTURE_SIZE);
<a name="l01325"></a>01325 texture_sizes[j + i * NUM_TEXTURE_SIZE].h =
<a name="l01326"></a>01326 1 << (i + MIN_TEXTURE_SIZE);
<a name="l01327"></a>01327 }
<a name="l01328"></a>01328 }
<a name="l01329"></a>01329
<a name="l01330"></a>01330 <span class="comment">/* Sort texture sizes by area */</span>
<a name="l01331"></a>01331 qsort(texture_sizes, NUM_TEXTURE_SIZE * NUM_TEXTURE_SIZE,
<a name="l01332"></a>01332 <span class="keyword">sizeof</span>(texture_size), &sort_textures);
<a name="l01333"></a>01333
<a name="l01334"></a>01334 <span class="keywordflow">for</span> (i = 0; i < NUM_TEXTURE_SIZE * NUM_TEXTURE_SIZE; i++) {
<a name="l01335"></a>01335 <span class="keywordtype">int</span> num_channels;
<a name="l01336"></a>01336
<a name="l01337"></a>01337 <span class="comment">/* Check the area - it must be larger than</span>
<a name="l01338"></a>01338 <span class="comment"> * all the glyphs</span>
<a name="l01339"></a>01339 <span class="comment"> */</span>
<a name="l01340"></a>01340 texture_size *t = &texture_sizes[i];
<a name="l01341"></a>01341 <span class="keywordtype">int</span> area = t->w * t->h;
<a name="l01342"></a>01342 <span class="keywordtype">int</span> depth = 24;
<a name="l01343"></a>01343
<a name="l01344"></a>01344 <span class="keywordflow">if</span> (area < total_area) {
<a name="l01345"></a>01345 <span class="keywordflow">continue</span>;
<a name="l01346"></a>01346 }
<a name="l01347"></a>01347
<a name="l01348"></a>01348 <span class="comment">/* Check against max values */</span>
<a name="l01349"></a>01349 <span class="keywordflow">if</span> ((t->h < max_h) || (t->w < max_w)) {
<a name="l01350"></a>01350 <span class="keywordflow">continue</span>;
<a name="l01351"></a>01351 }
<a name="l01352"></a>01352
<a name="l01353"></a>01353 TRACE(PREFIX_I <span class="stringliteral">"look_for_texture: candidate size: %ix%i\n"</span>, t->w, t->h);
<a name="l01354"></a>01354
<a name="l01355"></a>01355 <span class="comment">/* Check that the texture can, in fact, be created */</span>
<a name="l01356"></a>01356 num_channels = __allegro_gl_get_num_channels(format);
<a name="l01357"></a>01357 <span class="keywordflow">if</span> (num_channels == 1) {
<a name="l01358"></a>01358 depth = 8;
<a name="l01359"></a>01359 }
<a name="l01360"></a>01360 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (num_channels == 4) {
<a name="l01361"></a>01361 depth = 32;
<a name="l01362"></a>01362 }
<a name="l01363"></a>01363 <span class="keywordflow">else</span> {
<a name="l01364"></a>01364 depth = 24;
<a name="l01365"></a>01365 }
<a name="l01366"></a>01366 bmp = create_bitmap_ex(depth, t->w, t->h);
<a name="l01367"></a>01367
<a name="l01368"></a>01368 <span class="keywordflow">if</span> (!bmp) {
<a name="l01369"></a>01369 TRACE(PREFIX_W <span class="stringliteral">"look_for_texture: Out of memory while "</span>
<a name="l01370"></a>01370 <span class="stringliteral">"creating bitmap\n"</span>);
<a name="l01371"></a>01371 <span class="keywordflow">continue</span>;
<a name="l01372"></a>01372 }
<a name="l01373"></a>01373
<a name="l01374"></a>01374 <span class="keywordflow">if</span> (!aglf_check_texture(bmp, format, has_alpha)) {
<a name="l01375"></a>01375 TRACE(PREFIX_I <span class="stringliteral">"look_for_texture: Texture rejected by driver\n"</span>);
<a name="l01376"></a>01376 destroy_bitmap(bmp);
<a name="l01377"></a>01377 bmp = NULL;
<a name="l01378"></a>01378 <span class="keywordflow">continue</span>;
<a name="l01379"></a>01379 }
<a name="l01380"></a>01380
<a name="l01381"></a>01381 <span class="comment">/* Sort out the glyphs */</span>
<a name="l01382"></a>01382 TRACE(PREFIX_I <span class="stringliteral">"look_for_texture: Sorting on bmp: %p, beg: %i, "</span>
<a name="l01383"></a>01383 <span class="stringliteral">"end: %i\n"</span>, bmp, beg, end);
<a name="l01384"></a>01384
<a name="l01385"></a>01385 <span class="keywordflow">if</span> (aglf_sort_out_glyphs(bmp, glyphs, beg, end) == TRUE) {
<a name="l01386"></a>01386 <span class="comment">/* Success? */</span>
<a name="l01387"></a>01387 <span class="keywordflow">return</span> bmp;
<a name="l01388"></a>01388 }
<a name="l01389"></a>01389
<a name="l01390"></a>01390 <span class="comment">/* Failure? Try something else */</span>
<a name="l01391"></a>01391 TRACE(PREFIX_I <span class="stringliteral">"look_for_texture: Conversion failed\n"</span>);
<a name="l01392"></a>01392 destroy_bitmap(bmp);
<a name="l01393"></a>01393 bmp = NULL;
<a name="l01394"></a>01394 }
<a name="l01395"></a>01395
<a name="l01396"></a>01396 <span class="keywordflow">return</span> NULL;
<a name="l01397"></a>01397 }
<a name="l01398"></a>01398
<a name="l01399"></a>01399
<a name="l01400"></a>01400
<a name="l01401"></a>01401 <span class="preprocessor">#if GET_ALLEGRO_VERSION() >= MAKE_VER(4, 2, 1)</span>
<a name="l01402"></a>01402 <span class="preprocessor"></span><span class="comment">/* This is only used to render chars from an Allegro font which has the</span>
<a name="l01403"></a>01403 <span class="comment"> * font_vtable_trans vtable. If the target is an 8-bit bitmap, only the alpha</span>
<a name="l01404"></a>01404 <span class="comment"> * channel is used. Otherwise, blit is used, to preserve the alpha channel.</span>
<a name="l01405"></a>01405 <span class="comment"> */</span>
<a name="l01406"></a>01406 <span class="keyword">static</span> <span class="keywordtype">int</span> dummy_render_char(AL_CONST FONT* f, <span class="keywordtype">int</span> ch, <span class="keywordtype">int</span> fg, <span class="keywordtype">int</span> bg,
<a name="l01407"></a>01407 BITMAP* bmp, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y)
<a name="l01408"></a>01408 {
<a name="l01409"></a>01409 FONT_COLOR_DATA* cf = (FONT_COLOR_DATA*)(f->data);
<a name="l01410"></a>01410 BITMAP *glyph = NULL;
<a name="l01411"></a>01411
<a name="l01412"></a>01412 <span class="keywordflow">while</span>(cf) {
<a name="l01413"></a>01413 <span class="keywordflow">if</span>(ch >= cf->begin && ch < cf->end) {
<a name="l01414"></a>01414 glyph = cf->bitmaps[ch - cf->begin];
<a name="l01415"></a>01415 <span class="keywordflow">break</span>;
<a name="l01416"></a>01416 }
<a name="l01417"></a>01417 cf = cf->next;
<a name="l01418"></a>01418 }
<a name="l01419"></a>01419
<a name="l01420"></a>01420 <span class="keywordflow">if</span> (glyph)
<a name="l01421"></a>01421 {
<a name="l01422"></a>01422 <span class="keywordflow">if</span> (bitmap_color_depth(bmp) == 8) {
<a name="l01423"></a>01423 <span class="keywordtype">int</span> gx, gy;
<a name="l01424"></a>01424 <span class="keywordflow">for</span> (gy = 0; gy < bmp->h; gy++) {
<a name="l01425"></a>01425 <span class="keywordflow">for</span> (gx = 0; gx < bmp->w; gx++) {
<a name="l01426"></a>01426 <span class="keywordtype">int</span> c = getpixel(glyph, gx, gy);
<a name="l01427"></a>01427 <span class="keywordtype">int</span> a = geta(c);
<a name="l01428"></a>01428 putpixel(bmp, x + gx, y + gy, a);
<a name="l01429"></a>01429 }
<a name="l01430"></a>01430 }
<a name="l01431"></a>01431 }
<a name="l01432"></a>01432 <span class="keywordflow">else</span>
<a name="l01433"></a>01433 blit(glyph, bmp, 0, 0, x, y, glyph->w, glyph->h);
<a name="l01434"></a>01434 <span class="keywordflow">return</span> bmp->w;
<a name="l01435"></a>01435 }
<a name="l01436"></a>01436 <span class="keywordflow">return</span> 0;
<a name="l01437"></a>01437 }
<a name="l01438"></a>01438 <span class="preprocessor">#endif</span>
<a name="l01439"></a>01439 <span class="preprocessor"></span>
<a name="l01440"></a>01440
<a name="l01441"></a>01441
<a name="l01442"></a>01442 <span class="comment">/* Function to draw a character in a bitmap for conversion */</span>
<a name="l01443"></a>01443 <span class="keyword">static</span> <span class="keywordtype">int</span> draw_glyphs(BITMAP *bmp, FONT *f, GLint format, <span class="keywordtype">int</span> beg, <span class="keywordtype">int</span> end,
<a name="l01444"></a>01444 AGL_GLYPH *glyphs) {
<a name="l01445"></a>01445 <span class="keywordtype">char</span> buf[32];
<a name="l01446"></a>01446 <span class="keywordtype">int</span> i, j;
<a name="l01447"></a>01447
<a name="l01448"></a>01448 <span class="preprocessor">#if GET_ALLEGRO_VERSION() >= MAKE_VER(4, 2, 1)</span>
<a name="l01449"></a>01449 <span class="preprocessor"></span> <span class="keywordflow">if</span> (bitmap_color_depth(bmp) == 8 && f->vtable != font_vtable_trans) {
<a name="l01450"></a>01450 <span class="preprocessor">#else</span>
<a name="l01451"></a>01451 <span class="preprocessor"></span> <span class="keywordflow">if</span> (bitmap_color_depth(bmp) == 8) {
<a name="l01452"></a>01452 <span class="preprocessor">#endif</span>
<a name="l01453"></a>01453 <span class="preprocessor"></span> <span class="comment">/* Generate an alpha font */</span>
<a name="l01454"></a>01454 BITMAP *rgbbmp = create_bitmap_ex(24, bmp->w, bmp->h);
<a name="l01455"></a>01455
<a name="l01456"></a>01456 <span class="keywordflow">if</span> (!rgbbmp) {
<a name="l01457"></a>01457 TRACE(PREFIX_E <span class="stringliteral">"convert_allegro_font_to_texture: "</span>
<a name="l01458"></a>01458 <span class="stringliteral">"Ran out of memory while creating %ix%ix%i bitmap!\n"</span>,
<a name="l01459"></a>01459 bmp->w, bmp->h, 24);
<a name="l01460"></a>01460 <span class="keywordflow">return</span> FALSE;
<a name="l01461"></a>01461 }
<a name="l01462"></a>01462
<a name="l01463"></a>01463 clear_bitmap(rgbbmp);
<a name="l01464"></a>01464
<a name="l01465"></a>01465 <span class="keywordflow">for</span> (i = 0; i < end - beg; i++) {
<a name="l01466"></a>01466 usetc(buf + usetc(buf, glyphs[i].glyph_num + beg), 0);
<a name="l01467"></a>01467
<a name="l01468"></a>01468 textout_ex(rgbbmp, f, buf, glyphs[i].x - glyphs[i].offset_x,
<a name="l01469"></a>01469 glyphs[i].y - glyphs[i].offset_y, -1, -1);
<a name="l01470"></a>01470 }
<a name="l01471"></a>01471
<a name="l01472"></a>01472 <span class="comment">/* Convert back to 8bpp */</span>
<a name="l01473"></a>01473 <span class="keywordflow">for</span> (j = 0; j < bmp->h; j++) {
<a name="l01474"></a>01474 <span class="keywordflow">for</span> (i = 0; i < bmp->w; i++) {
<a name="l01475"></a>01475 <span class="keywordtype">int</span> pix = _getpixel24(rgbbmp, i, j);
<a name="l01476"></a>01476 <span class="keywordtype">int</span> r = getr24(pix);
<a name="l01477"></a>01477 <span class="keywordtype">int</span> g = getg24(pix);
<a name="l01478"></a>01478 <span class="keywordtype">int</span> b = getb24(pix);
<a name="l01479"></a>01479 <span class="keywordtype">int</span> gray = (r * 77 + g * 150 + b * 28 + 255) >> 8;
<a name="l01480"></a>01480 _putpixel(bmp, i, j, MID(0, gray, 255));
<a name="l01481"></a>01481 }
<a name="l01482"></a>01482 }
<a name="l01483"></a>01483 destroy_bitmap(rgbbmp);
<a name="l01484"></a>01484 }
<a name="l01485"></a>01485 <span class="keywordflow">else</span> {
<a name="l01486"></a>01486 <span class="preprocessor">#if GET_ALLEGRO_VERSION() >= MAKE_VER(4, 2, 1)</span>
<a name="l01487"></a>01487 <span class="preprocessor"></span> int (*borrowed_color_vtable)(AL_CONST FONT*, int, int, int, BITMAP*, int, int) = NULL;
<a name="l01488"></a>01488
<a name="l01489"></a>01489 <span class="comment">//In order to keep the alpha channel in textout_ex we borrow</span>
<a name="l01490"></a>01490 <span class="comment">//the color font vtable which uses maked_blit() instead of</span>
<a name="l01491"></a>01491 <span class="comment">//draw_trans_sprite() to draw glyphs.</span>
<a name="l01492"></a>01492 <span class="keywordflow">if</span> (f->vtable == font_vtable_trans) {
<a name="l01493"></a>01493 borrowed_color_vtable = f->vtable->render_char;
<a name="l01494"></a>01494 f->vtable->render_char = dummy_render_char;
<a name="l01495"></a>01495 }
<a name="l01496"></a>01496 <span class="preprocessor">#endif</span>
<a name="l01497"></a>01497 <span class="preprocessor"></span>
<a name="l01498"></a>01498 <span class="keywordflow">if</span> (__allegro_gl_get_num_channels(format) == 4) {
<a name="l01499"></a>01499 clear_to_color(bmp, bitmap_mask_color(bmp));
<a name="l01500"></a>01500 }
<a name="l01501"></a>01501 <span class="keywordflow">else</span> {
<a name="l01502"></a>01502 clear_bitmap(bmp);
<a name="l01503"></a>01503 }
<a name="l01504"></a>01504
<a name="l01505"></a>01505 <span class="keywordflow">for</span> (i = 0; i < end - beg; i++) {
<a name="l01506"></a>01506 usetc(buf + usetc(buf, glyphs[i].glyph_num + beg), 0);
<a name="l01507"></a>01507 textout_ex(bmp, f, buf, glyphs[i].x - glyphs[i].offset_x,
<a name="l01508"></a>01508 glyphs[i].y - glyphs[i].offset_y, -1, -1);
<a name="l01509"></a>01509 }
<a name="l01510"></a>01510
<a name="l01511"></a>01511 <span class="preprocessor">#if GET_ALLEGRO_VERSION() >= MAKE_VER(4, 2, 1)</span>
<a name="l01512"></a>01512 <span class="preprocessor"></span> <span class="keywordflow">if</span> (borrowed_color_vtable) {
<a name="l01513"></a>01513 f->vtable->render_char = borrowed_color_vtable;
<a name="l01514"></a>01514 }
<a name="l01515"></a>01515 <span class="preprocessor">#endif</span>
<a name="l01516"></a>01516 <span class="preprocessor"></span> }
<a name="l01517"></a>01517
<a name="l01518"></a>01518 <span class="keywordflow">return</span> TRUE;
<a name="l01519"></a>01519 }
<a name="l01520"></a>01520
<a name="l01521"></a>01521
<a name="l01522"></a>01522
<a name="l01523"></a>01523 <span class="comment">/* Converts a single font range to a texture.</span>
<a name="l01524"></a>01524 <span class="comment"> * dest - Receives the result.</span>
<a name="l01525"></a>01525 <span class="comment"> * f - The original font.</span>
<a name="l01526"></a>01526 <span class="comment"> * src - The original font data.</span>
<a name="l01527"></a>01527 <span class="comment"> */</span>
<a name="l01528"></a>01528 <span class="keyword">static</span> <span class="keywordtype">void</span> aglf_convert_allegro_font_to_texture(FONT_AGL_DATA **dest, FONT *f,
<a name="l01529"></a>01529 <span class="keywordtype">void</span> *src, <span class="keywordtype">int</span> *height, <span class="keywordtype">float</span> scale, GLint format) {
<a name="l01530"></a>01530
<a name="l01531"></a>01531 <span class="keywordtype">int</span> max = 0;
<a name="l01532"></a>01532 BITMAP *bmp = NULL;
<a name="l01533"></a>01533 <span class="keywordtype">int</span> beg = 0, end = 0;
<a name="l01534"></a>01534 <span class="keywordtype">int</span> max_w, max_h;
<a name="l01535"></a>01535 <span class="keywordtype">int</span> total_area, gross_area;
<a name="l01536"></a>01536
<a name="l01537"></a>01537 AGL_GLYPH *glyph_coords;
<a name="l01538"></a>01538
<a name="l01539"></a>01539 <span class="keyword">union </span>mixed_ptr dat;
<a name="l01540"></a>01540 dat.ptr = src;
<a name="l01541"></a>01541
<a name="l01542"></a>01542 <span class="keywordflow">if</span> (is_mono_font(f)) {
<a name="l01543"></a>01543 beg = dat.mf->begin;
<a name="l01544"></a>01544 end = dat.mf->end;
<a name="l01545"></a>01545 max = dat.mf->end - dat.mf->begin;
<a name="l01546"></a>01546 <span class="keywordflow">if</span> (format == -1) {
<a name="l01547"></a>01547 format = GL_INTENSITY4;
<a name="l01548"></a>01548 }
<a name="l01549"></a>01549 }
<a name="l01550"></a>01550 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (is_color_font(f)) {
<a name="l01551"></a>01551 beg = dat.cf->begin;
<a name="l01552"></a>01552 end = dat.cf->end;
<a name="l01553"></a>01553 max = dat.cf->end - dat.cf->begin;
<a name="l01554"></a>01554 <span class="keywordflow">if</span> (format == -1) {
<a name="l01555"></a>01555 <span class="preprocessor">#if GET_ALLEGRO_VERSION() >= MAKE_VER(4, 2, 1)</span>
<a name="l01556"></a>01556 <span class="preprocessor"></span> format = (f->vtable == font_vtable_trans ? GL_RGBA8 : GL_RGB8);
<a name="l01557"></a>01557 <span class="preprocessor">#else</span>
<a name="l01558"></a>01558 <span class="preprocessor"></span> format = GL_RGB8;
<a name="l01559"></a>01559 <span class="preprocessor">#endif</span>
<a name="l01560"></a>01560 <span class="preprocessor"></span> }
<a name="l01561"></a>01561 }
<a name="l01562"></a>01562
<a name="l01563"></a>01563 <span class="comment">/* Allocate glyph sizes */</span>
<a name="l01564"></a>01564 glyph_coords = malloc(max * <span class="keyword">sizeof</span>(AGL_GLYPH));
<a name="l01565"></a>01565 memset(glyph_coords, 0, max * <span class="keyword">sizeof</span>(AGL_GLYPH));
<a name="l01566"></a>01566
<a name="l01567"></a>01567 <span class="keywordflow">if</span> (crop_font_range(f, dat.ptr, beg, end, glyph_coords,
<a name="l01568"></a>01568 &total_area, &gross_area, &max_w, &max_h) == FALSE) {
<a name="l01569"></a>01569 TRACE(PREFIX_I <span class="stringliteral">"convert_allegro_font_to_texture: Unable to crop font "</span>
<a name="l01570"></a>01570 <span class="stringliteral">"range\n"</span>);
<a name="l01571"></a>01571 free(glyph_coords);
<a name="l01572"></a>01572 <span class="keywordflow">return</span>;
<a name="l01573"></a>01573 }
<a name="l01574"></a>01574
<a name="l01575"></a>01575 TRACE(PREFIX_I <span class="stringliteral">"convert_allegro_font_to_texture: Total area of glyphs: "</span>
<a name="l01576"></a>01576 <span class="stringliteral">"%i pixels (%i pixels gross) - max_w: %i, max_h: %i\n"</span>,
<a name="l01577"></a>01577 total_area, gross_area, max_w, max_h);
<a name="l01578"></a>01578
<a name="l01579"></a>01579 <span class="comment">/* Sort glyphs by width, then height */</span>
<a name="l01580"></a>01580 qsort(glyph_coords, end - beg, <span class="keyword">sizeof</span>(AGL_GLYPH), &sort_glyphs);
<a name="l01581"></a>01581
<a name="l01582"></a>01582
<a name="l01583"></a>01583 <span class="comment">/* Now, we look for the appropriate texture size */</span>
<a name="l01584"></a>01584 bmp = look_for_texture(beg, end, glyph_coords, max_w, max_h,
<a name="l01585"></a>01585 total_area, format, (*dest)->has_alpha);
<a name="l01586"></a>01586
<a name="l01587"></a>01587 <span class="comment">/* No texture sizes were found - we should split the font up */</span>
<a name="l01588"></a>01588 <span class="keywordflow">if</span> (!bmp) {
<a name="l01589"></a>01589 <span class="keywordtype">int</span> height1;
<a name="l01590"></a>01590 <span class="keyword">union </span>mixed_ptr f1, f2;
<a name="l01591"></a>01591 FONT_AGL_DATA *dest1, *dest2;
<a name="l01592"></a>01592
<a name="l01593"></a>01593 free(glyph_coords);
<a name="l01594"></a>01594
<a name="l01595"></a>01595 dest1 = *(dest);
<a name="l01596"></a>01596 dest2 = malloc(<span class="keyword">sizeof</span>(FONT_AGL_DATA));
<a name="l01597"></a>01597
<a name="l01598"></a>01598 <span class="keywordflow">if</span> (!dest2) {
<a name="l01599"></a>01599 TRACE(PREFIX_E <span class="stringliteral">"convert_allegro_font_to_texture: "</span>
<a name="l01600"></a>01600 <span class="stringliteral">"Out of memory while trying to allocate %i bytes.\n"</span>,
<a name="l01601"></a>01601 (<span class="keywordtype">int</span>)<span class="keyword">sizeof</span>(FONT_AGL_DATA));
<a name="l01602"></a>01602 <span class="keywordflow">return</span>;
<a name="l01603"></a>01603 }
<a name="l01604"></a>01604
<a name="l01605"></a>01605 memset(dest2, 0, <span class="keyword">sizeof</span>(FONT_AGL_DATA));
<a name="l01606"></a>01606
<a name="l01607"></a>01607 dest2->next = dest1->next;
<a name="l01608"></a>01608 dest1->next = dest2;
<a name="l01609"></a>01609 dest2->is_free_chunk = TRUE;
<a name="l01610"></a>01610 dest2->format = dest1->format;
<a name="l01611"></a>01611 dest2->has_alpha = dest1->has_alpha;
<a name="l01612"></a>01612
<a name="l01613"></a>01613 <span class="keywordflow">if</span> (split_font(f, dat.ptr, &f1.ptr, &f2.ptr) == FALSE) {
<a name="l01614"></a>01614 TRACE(PREFIX_E <span class="stringliteral">"convert_allegro_font_to_texture: Unable "</span>
<a name="l01615"></a>01615 <span class="stringliteral">"to split font!\n"</span>);
<a name="l01616"></a>01616 dest1->next = dest2->next;
<a name="l01617"></a>01617 free(dest2);
<a name="l01618"></a>01618 <span class="keywordflow">return</span>;
<a name="l01619"></a>01619 }
<a name="l01620"></a>01620
<a name="l01621"></a>01621 aglf_convert_allegro_font_to_texture(&dest1, f, f1.ptr, height, scale,
<a name="l01622"></a>01622 format);
<a name="l01623"></a>01623 height1 = (*height);
<a name="l01624"></a>01624 aglf_convert_allegro_font_to_texture(&dest2, f, f2.ptr, height, scale,
<a name="l01625"></a>01625 format);
<a name="l01626"></a>01626 destroy_split_font(f, f1, f2);
<a name="l01627"></a>01627
<a name="l01628"></a>01628 <span class="keywordflow">if</span> (height1 > (*height))
<a name="l01629"></a>01629 (*height) = height1;
<a name="l01630"></a>01630 (*dest) = dest2;
<a name="l01631"></a>01631
<a name="l01632"></a>01632 <span class="keywordflow">return</span>;
<a name="l01633"></a>01633 }
<a name="l01634"></a>01634
<a name="l01635"></a>01635 TRACE(PREFIX_I <span class="stringliteral">"convert_allegro_font_to_texture: Using texture "</span>
<a name="l01636"></a>01636 <span class="stringliteral">"%ix%ix%i for font conversion.\n"</span>, bmp->w, bmp->h,
<a name="l01637"></a>01637 bitmap_color_depth(bmp));
<a name="l01638"></a>01638
<a name="l01639"></a>01639 <span class="comment">/* Now that all the glyphs are in place, we draw them into the bitmap */</span>
<a name="l01640"></a>01640 <span class="keywordflow">if</span> (draw_glyphs(bmp, f, format, beg, end, glyph_coords) == FALSE) {
<a name="l01641"></a>01641 destroy_bitmap(bmp);
<a name="l01642"></a>01642 free(glyph_coords);
<a name="l01643"></a>01643 <span class="keywordflow">return</span>;
<a name="l01644"></a>01644 }
<a name="l01645"></a>01645
<a name="l01646"></a>01646 <span class="comment">/* Un-Sort glyphs */</span>
<a name="l01647"></a>01647 qsort(glyph_coords, end - beg, <span class="keyword">sizeof</span>(AGL_GLYPH), &unsort_glyphs);
<a name="l01648"></a>01648
<a name="l01649"></a>01649 <span class="preprocessor">#if (defined SAVE_FONT_SCREENSHOT)</span>
<a name="l01650"></a>01650 <span class="preprocessor"></span> save_shot(bmp);
<a name="l01651"></a>01651 <span class="preprocessor">#endif</span>
<a name="l01652"></a>01652 <span class="preprocessor"></span>
<a name="l01653"></a>01653 (*dest)->list_base =
<a name="l01654"></a>01654 create_textured_font_call_lists(glyph_coords, max, bmp,
<a name="l01655"></a>01655 scale, height);
<a name="l01656"></a>01656
<a name="l01657"></a>01657 (*dest)->texture = aglf_upload_texture(bmp, format, (*dest)->has_alpha);
<a name="l01658"></a>01658 (*dest)->type = <a class="code" href="group__Text.html#ga92bf039bc7b06568273ee17f15cf6671" title="Indicates that you want fonts to be converted to a texture format.">AGL_FONT_TYPE_TEXTURED</a>;
<a name="l01659"></a>01659 (*dest)->format = format;
<a name="l01660"></a>01660 (*dest)->scale = scale;
<a name="l01661"></a>01661 (*dest)->start = beg;
<a name="l01662"></a>01662 (*dest)->end = end;
<a name="l01663"></a>01663 (*dest)->data = bmp;
<a name="l01664"></a>01664 (*dest)->glyph_coords = glyph_coords;
<a name="l01665"></a>01665
<a name="l01666"></a>01666 <span class="keywordflow">return</span>;
<a name="l01667"></a>01667 }
<a name="l01668"></a>01668
<a name="l01669"></a>01669
<a name="l01670"></a>01670
<a name="l01671"></a>01671 <span class="keyword">static</span> <span class="keywordtype">void</span> aglf_convert_allegro_font_to_bitmap(FONT_AGL_DATA *dest, FONT *f,
<a name="l01672"></a>01672 <span class="keywordtype">void</span> *src, <span class="keywordtype">int</span> *height) {
<a name="l01673"></a>01673
<a name="l01674"></a>01674 <span class="keywordtype">int</span> max = 0;
<a name="l01675"></a>01675 <span class="keywordtype">int</span> i, j, k;
<a name="l01676"></a>01676 <span class="keywordtype">int</span> beg = 0, end = 0;
<a name="l01677"></a>01677 <span class="keywordtype">int</span> mask;
<a name="l01678"></a>01678 FONT_GLYPH **glyph;
<a name="l01679"></a>01679
<a name="l01680"></a>01680 <span class="keyword">union </span>{
<a name="l01681"></a>01681 FONT_MONO_DATA* mf;
<a name="l01682"></a>01682 FONT_COLOR_DATA* cf;
<a name="l01683"></a>01683 <span class="keywordtype">void</span> *ptr;
<a name="l01684"></a>01684 } dat;
<a name="l01685"></a>01685
<a name="l01686"></a>01686 dat.ptr = src;
<a name="l01687"></a>01687
<a name="l01688"></a>01688 <span class="keywordflow">if</span> (is_mono_font(f))
<a name="l01689"></a>01689 max = dat.mf->end - dat.mf->begin;
<a name="l01690"></a>01690 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (is_color_font(f))
<a name="l01691"></a>01691 max = dat.cf->end - dat.cf->begin;
<a name="l01692"></a>01692 <span class="keywordflow">else</span>
<a name="l01693"></a>01693 <span class="keywordflow">return</span>;
<a name="l01694"></a>01694
<a name="l01695"></a>01695 glyph = malloc(<span class="keyword">sizeof</span>(FONT_GLYPH*) * max);
<a name="l01696"></a>01696
<a name="l01697"></a>01697 <span class="keywordflow">if</span> (!glyph) {
<a name="l01698"></a>01698 TRACE(PREFIX_E <span class="stringliteral">"convert_allegro_font_to_bitmap: Ran out of "</span>
<a name="l01699"></a>01699 <span class="stringliteral">"memory while allocating %i bytes\n"</span>, (<span class="keywordtype">int</span>)<span class="keyword">sizeof</span>(FONT_GLYPH));
<a name="l01700"></a>01700 <span class="keywordflow">return</span>;
<a name="l01701"></a>01701 }
<a name="l01702"></a>01702
<a name="l01703"></a>01703 *height = f->height;
<a name="l01704"></a>01704
<a name="l01705"></a>01705 <span class="keywordflow">if</span> (is_mono_font(f)) {
<a name="l01706"></a>01706
<a name="l01707"></a>01707 <span class="comment">/* for each glyph */</span>
<a name="l01708"></a>01708 <span class="keywordflow">for</span> (i = 0; i < max; i++) {
<a name="l01709"></a>01709 FONT_GLYPH *oldgl = dat.mf->glyphs[i];
<a name="l01710"></a>01710
<a name="l01711"></a>01711 <span class="keywordtype">int</span> size = <span class="keyword">sizeof</span>(FONT_GLYPH) + ((oldgl->w + 31) / 32) * 4
<a name="l01712"></a>01712 * oldgl->h;
<a name="l01713"></a>01713
<a name="l01714"></a>01714 <span class="comment">/* create new glyph */</span>
<a name="l01715"></a>01715 FONT_GLYPH *newgl = (FONT_GLYPH*)malloc(size);
<a name="l01716"></a>01716
<a name="l01717"></a>01717 <span class="keywordflow">if</span> (!newgl)
<a name="l01718"></a>01718 <span class="keywordflow">break</span>;
<a name="l01719"></a>01719
<a name="l01720"></a>01720 memset(newgl, 0, size);
<a name="l01721"></a>01721
<a name="l01722"></a>01722 newgl->w = oldgl->w;
<a name="l01723"></a>01723 newgl->h = oldgl->h;
<a name="l01724"></a>01724
<a name="l01725"></a>01725 <span class="comment">/* update the data */</span>
<a name="l01726"></a>01726 <span class="keywordflow">for</span> (j = 0; j < oldgl->h; j++) {
<a name="l01727"></a>01727 <span class="keywordflow">for</span> (k = 0; k < ((oldgl->w + 7) / 8); k++) {
<a name="l01728"></a>01728 <span class="keywordtype">int</span> addr = (oldgl->h - j - 1) * ((oldgl->w + 31) / 32) * 4
<a name="l01729"></a>01729 + k;
<a name="l01730"></a>01730 newgl->dat[addr] = oldgl->dat[j * ((oldgl->w + 7) / 8) + k];
<a name="l01731"></a>01731 }
<a name="l01732"></a>01732 }
<a name="l01733"></a>01733
<a name="l01734"></a>01734 glyph[i] = newgl;
<a name="l01735"></a>01735 }
<a name="l01736"></a>01736 }
<a name="l01737"></a>01737 <span class="comment">/* Reduce to 1 bit */</span>
<a name="l01738"></a>01738 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (is_color_font(f)) {
<a name="l01739"></a>01739 <span class="comment">/* for each glyph */</span>
<a name="l01740"></a>01740 <span class="keywordflow">for</span> (i = 0; i < max; i++) {
<a name="l01741"></a>01741
<a name="l01742"></a>01742 <span class="keywordtype">int</span> size;
<a name="l01743"></a>01743 BITMAP *oldgl = dat.cf->bitmaps[i];
<a name="l01744"></a>01744 FONT_GLYPH *newgl;
<a name="l01745"></a>01745
<a name="l01746"></a>01746 mask = bitmap_mask_color(oldgl);
<a name="l01747"></a>01747
<a name="l01748"></a>01748 size = <span class="keyword">sizeof</span>(FONT_GLYPH) + ((oldgl->w + 31) / 32) * 4 * oldgl->h;
<a name="l01749"></a>01749
<a name="l01750"></a>01750 <span class="comment">/* create new glyph */</span>
<a name="l01751"></a>01751 newgl = (FONT_GLYPH*)malloc(size);
<a name="l01752"></a>01752
<a name="l01753"></a>01753 <span class="keywordflow">if</span> (!newgl)
<a name="l01754"></a>01754 <span class="keywordflow">break</span>;
<a name="l01755"></a>01755
<a name="l01756"></a>01756 memset(newgl, 0, size);
<a name="l01757"></a>01757
<a name="l01758"></a>01758 newgl->w = oldgl->w;
<a name="l01759"></a>01759 newgl->h = oldgl->h;
<a name="l01760"></a>01760
<a name="l01761"></a>01761 <span class="comment">/* update the data */</span>
<a name="l01762"></a>01762 <span class="keywordflow">for</span> (j = 0; j < oldgl->h; j++) {
<a name="l01763"></a>01763 <span class="keywordflow">for</span> (k = 0; k < oldgl->w; k++) {
<a name="l01764"></a>01764 <span class="keywordtype">int</span> addr = (oldgl->h - j - 1) * ((oldgl->w + 31) / 32) * 4
<a name="l01765"></a>01765 + (k / 8);
<a name="l01766"></a>01766 newgl->dat[addr] |= (getpixel(oldgl, k, j) == mask)
<a name="l01767"></a>01767 ? 0 : (1 << (k & 7));
<a name="l01768"></a>01768 }
<a name="l01769"></a>01769 }
<a name="l01770"></a>01770
<a name="l01771"></a>01771 glyph[i] = newgl;
<a name="l01772"></a>01772 }
<a name="l01773"></a>01773 }
<a name="l01774"></a>01774 <span class="comment">/* Create call lists */</span>
<a name="l01775"></a>01775 {
<a name="l01776"></a>01776 GLuint list = glGenLists(max);
<a name="l01777"></a>01777
<a name="l01778"></a>01778 <span class="keywordflow">for</span> (i = 0; i < max; i++) {
<a name="l01779"></a>01779 glNewList(list + i, GL_COMPILE);
<a name="l01780"></a>01780
<a name="l01781"></a>01781 glBitmap(glyph[i]->w, glyph[i]->h, 0, 0, glyph[i]->w, 0,
<a name="l01782"></a>01782 glyph[i]->dat);
<a name="l01783"></a>01783
<a name="l01784"></a>01784 glEndList();
<a name="l01785"></a>01785 }
<a name="l01786"></a>01786 dest->list_base = list;
<a name="l01787"></a>01787 }
<a name="l01788"></a>01788
<a name="l01789"></a>01789 dest->is_free_chunk = 0;
<a name="l01790"></a>01790 dest->type = <a class="code" href="group__Text.html#ga7ed8fdc1b0065d2fe584b15d69108b1a" title="Indicates that you want fonts to be converted to a bitmap format.">AGL_FONT_TYPE_BITMAP</a>;
<a name="l01791"></a>01791 dest->start = beg;
<a name="l01792"></a>01792 dest->end = end;
<a name="l01793"></a>01793 dest->data = glyph;
<a name="l01794"></a>01794
<a name="l01795"></a>01795 <span class="keywordflow">return</span>;
<a name="l01796"></a>01796 }
<a name="l01797"></a>01797
<a name="l01798"></a>01798
<a name="l01799"></a>01799
<a name="l01800"></a>01800 <span class="keyword">static</span> <span class="keywordtype">int</span> aglf_check_texture(BITMAP *bmp, GLint format, <span class="keywordtype">int</span> has_alpha) {
<a name="l01801"></a>01801
<a name="l01802"></a>01802 <span class="keywordtype">int</span> flags = <a class="code" href="group__texture.html#gadeffe4feb290278035beacedb284a010" title="Flip the texture on the x-axis.">AGL_TEXTURE_FLIP</a> | <a class="code" href="group__texture.html#gabaf179e577a9328a751e92e3603f0746" title="AllegroGL will generate mipmaps for this texture.">AGL_TEXTURE_MIPMAP</a>;
<a name="l01803"></a>01803
<a name="l01804"></a>01804 <span class="keywordflow">if</span> (format == GL_ALPHA4 || format == GL_ALPHA8 || format == GL_ALPHA
<a name="l01805"></a>01805 || format == GL_INTENSITY4 || format == GL_INTENSITY8
<a name="l01806"></a>01806 || format == GL_INTENSITY
<a name="l01807"></a>01807 || format == GL_LUMINANCE4 || format == GL_LUMINANCE8
<a name="l01808"></a>01808 || format == GL_LUMINANCE
<a name="l01809"></a>01809 || format == 1) {
<a name="l01810"></a>01810 flags |= <a class="code" href="group__texture.html#gad67cfdfd21ef2cae75b03cb871e57f4a" title="Tell AllegroGL that the specified BITMAP is an 8-bpp alpha-only BITMAP.">AGL_TEXTURE_ALPHA_ONLY</a>;
<a name="l01811"></a>01811 }
<a name="l01812"></a>01812 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (format == GL_RGBA8) {
<a name="l01813"></a>01813 <span class="keywordflow">if</span> (has_alpha) {
<a name="l01814"></a>01814 flags |= <a class="code" href="group__texture.html#ga8cc859eadf1610b424cd9188e716f432" title="Tell AllegroGL that the bitmap had an alpha channel, so it should be preserved when generating the te...">AGL_TEXTURE_HAS_ALPHA</a>;
<a name="l01815"></a>01815 }
<a name="l01816"></a>01816 <span class="keywordflow">else</span> {
<a name="l01817"></a>01817 flags |= <a class="code" href="group__texture.html#gaba184d573c65f33b35d1d57936607d08" title="Generate an alpha channel for this texture, based on the Allegro mask color.">AGL_TEXTURE_MASKED</a>;
<a name="l01818"></a>01818 }
<a name="l01819"></a>01819 }
<a name="l01820"></a>01820
<a name="l01821"></a>01821 <span class="keywordflow">return</span> <a class="code" href="group__texture.html#gab0cf4dc0ddcb45f5b067d08aed1c88e6" title="Checks whether the specified bitmap is of the proper size for texturing.">allegro_gl_check_texture_ex</a>(flags, bmp, format);
<a name="l01822"></a>01822 }
<a name="l01823"></a>01823
<a name="l01824"></a>01824
<a name="l01825"></a>01825
<a name="l01826"></a>01826 <span class="keyword">static</span> GLuint aglf_upload_texture(BITMAP *bmp, GLint format, <span class="keywordtype">int</span> has_alpha) {
<a name="l01827"></a>01827
<a name="l01828"></a>01828 <span class="keywordtype">int</span> flags = <a class="code" href="group__texture.html#gadeffe4feb290278035beacedb284a010" title="Flip the texture on the x-axis.">AGL_TEXTURE_FLIP</a> | <a class="code" href="group__texture.html#gabaf179e577a9328a751e92e3603f0746" title="AllegroGL will generate mipmaps for this texture.">AGL_TEXTURE_MIPMAP</a>;
<a name="l01829"></a>01829 GLuint texture;
<a name="l01830"></a>01830
<a name="l01831"></a>01831 <span class="keywordflow">if</span> (format == GL_ALPHA4 || format == GL_ALPHA8 || format == GL_ALPHA
<a name="l01832"></a>01832 || format == GL_INTENSITY4 || format == GL_INTENSITY8
<a name="l01833"></a>01833 || format == GL_INTENSITY
<a name="l01834"></a>01834 || format == GL_LUMINANCE4 || format == GL_LUMINANCE8
<a name="l01835"></a>01835 || format == GL_LUMINANCE
<a name="l01836"></a>01836 || format == 1) {
<a name="l01837"></a>01837 flags |= <a class="code" href="group__texture.html#gad67cfdfd21ef2cae75b03cb871e57f4a" title="Tell AllegroGL that the specified BITMAP is an 8-bpp alpha-only BITMAP.">AGL_TEXTURE_ALPHA_ONLY</a>;
<a name="l01838"></a>01838 }
<a name="l01839"></a>01839 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (__allegro_gl_get_num_channels(format) == 4) {
<a name="l01840"></a>01840 <span class="keywordflow">if</span> (has_alpha) {
<a name="l01841"></a>01841 flags |= <a class="code" href="group__texture.html#ga8cc859eadf1610b424cd9188e716f432" title="Tell AllegroGL that the bitmap had an alpha channel, so it should be preserved when generating the te...">AGL_TEXTURE_HAS_ALPHA</a>;
<a name="l01842"></a>01842 }
<a name="l01843"></a>01843 <span class="keywordflow">else</span> {
<a name="l01844"></a>01844 flags |= <a class="code" href="group__texture.html#gaba184d573c65f33b35d1d57936607d08" title="Generate an alpha channel for this texture, based on the Allegro mask color.">AGL_TEXTURE_MASKED</a>;
<a name="l01845"></a>01845 }
<a name="l01846"></a>01846 }
<a name="l01847"></a>01847
<a name="l01848"></a>01848 TRACE(PREFIX_I <span class="stringliteral">"Want texture format: %s\n"</span>,
<a name="l01849"></a>01849 __allegro_gl_get_format_description(format));
<a name="l01850"></a>01850 texture = <a class="code" href="group__texture.html#gaf3a48c555068e7051171255c1011150a" title="Uploads an Allegro BITMAP to the GL driver as a texture.">allegro_gl_make_texture_ex</a>(flags, bmp, format);
<a name="l01851"></a>01851 TRACE(PREFIX_I <span class="stringliteral">"Texture ID is: %u\n"</span>, texture);
<a name="l01852"></a>01852
<a name="l01853"></a>01853 <span class="keywordflow">return</span> texture;
<a name="l01854"></a>01854 }
<a name="l01855"></a>01855
</pre></div></div>
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