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<h1>csplugincommon/canvas/draw_text.h</h1><a href="draw__text_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> Copyright (C) 2004 by Jorrit Tyberghein</span>
<a name="l00003"></a>00003 <span class="comment"> (C) 2004 by Frank Richter</span>
<a name="l00004"></a>00004 <span class="comment"></span>
<a name="l00005"></a>00005 <span class="comment"> This library is free software; you can redistribute it and/or</span>
<a name="l00006"></a>00006 <span class="comment"> modify it under the terms of the GNU Library General Public</span>
<a name="l00007"></a>00007 <span class="comment"> License as published by the Free Software Foundation; either</span>
<a name="l00008"></a>00008 <span class="comment"> version 2 of the License, or (at your option) any later version.</span>
<a name="l00009"></a>00009 <span class="comment"></span>
<a name="l00010"></a>00010 <span class="comment"> This library is distributed in the hope that it will be useful,</span>
<a name="l00011"></a>00011 <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00012"></a>00012 <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00013"></a>00013 <span class="comment"> Library General Public License for more details.</span>
<a name="l00014"></a>00014 <span class="comment"></span>
<a name="l00015"></a>00015 <span class="comment"> You should have received a copy of the GNU Library General Public</span>
<a name="l00016"></a>00016 <span class="comment"> License along with this library; if not, write to the Free</span>
<a name="l00017"></a>00017 <span class="comment"> Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.</span>
<a name="l00018"></a>00018 <span class="comment">*/</span>
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <span class="preprocessor">#ifndef __CS_CSPLUGINCOMMON_CANVAS_DRAW_TEXT_H__</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span><span class="preprocessor">#define __CS_CSPLUGINCOMMON_CANVAS_DRAW_TEXT_H__</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span>
<a name="l00027"></a>00027 <span class="preprocessor">#include "<a class="code" href="draw__common_8h.html" title="Common software canvas drawing tools.">csplugincommon/canvas/draw_common.h</a>"</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include "<a class="code" href="softfontcache_8h.html" title="Font cache base class for software canvases.">csplugincommon/canvas/softfontcache.h</a>"</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include "<a class="code" href="csuctransform_8h.html" title="Converter between UTF encodings.">csutil/csuctransform.h</a>"</span>
<a name="l00030"></a>00030
<a name="l00041"></a>00041 <span class="keyword">template</span><<span class="keyword">class</span> Tpixel, <span class="keyword">class</span> Tpixmixer1, <span class="keyword">class</span> Tpixmixer2, <span class="keyword">class</span> Tpixmixer3>
<a name="l00042"></a><a class="code" href="classcsG2DDrawText.html">00042</a> <span class="keyword">class </span><a class="code" href="classcsG2DDrawText.html" title="Class to write some text.">csG2DDrawText</a>
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044 <span class="keyword">public</span>:
<a name="l00045"></a><a class="code" href="classcsG2DDrawText.html#fee1943b1499efe3971fca379ee741da">00045</a> <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classcsG2DDrawText.html#fee1943b1499efe3971fca379ee741da">DrawText</a> (<a class="code" href="classcsSoftFontCache.html" title="Font cache base class for software canvases.">csSoftFontCache</a>* cache, <a class="code" href="structiFont.html" title="A font object.">iFont</a>* font, <span class="keywordtype">int</span> pen_x, <span class="keywordtype">int</span> pen_y,
<a name="l00046"></a>00046 Tpixel fg, <a class="code" href="group__util.html#gdde6aaee8457bee49c2a92621fe22b79" title="unsigned 8-bit integer (0..255)">uint8</a> alphaFG, Tpixel bg, <a class="code" href="group__util.html#gdde6aaee8457bee49c2a92621fe22b79" title="unsigned 8-bit integer (0..255)">uint8</a> alphaBG, <span class="keyword">const</span> <span class="keywordtype">void</span>* text,
<a name="l00047"></a>00047 <span class="keywordtype">bool</span> isWide, <a class="code" href="group__util.html#g91ad9478d81a7aaf2593e8d9c3d06a14" title="Shortcut for default unsigned int.">uint</a> flags)
<a name="l00048"></a>00048 {
<a name="l00049"></a>00049 <a class="code" href="classcsGraphics2D.html" title="This is the base class for 2D canvases.">csGraphics2D</a>* G2D = cache-><a class="code" href="classcsSoftFontCache.html#6111a0ed75c70512827b2d88fdc92c5e">G2D</a>;
<a name="l00050"></a>00050 <span class="keyword">const</span> <span class="keywordtype">int</span> ClipX1 = cache-><a class="code" href="classcsFontCache.html#90726d3aa3b492044e5c9412b4c23333" title="the current clipping rect">ClipX1</a>, ClipY1 = cache-><a class="code" href="classcsFontCache.html#a4ad143f29be9dd6ae051021511bf35d">ClipY1</a>,
<a name="l00051"></a>00051 ClipX2 = cache-><a class="code" href="classcsFontCache.html#f1af1f7bf2c53aaa3b7d48dad4e03d08">ClipX2</a>, ClipY2 = cache-><a class="code" href="classcsFontCache.html#cfa9dd29fb4e01a6d3f420f9b4c9ee02">ClipY2</a>;
<a name="l00052"></a>00052 Tpixmixer1 mixerFG (G2D, fg, alphaFG);
<a name="l00053"></a>00053 Tpixmixer2 mixerBG (G2D, bg, alphaBG);
<a name="l00054"></a>00054
<a name="l00055"></a>00055 <span class="keywordflow">if</span> (!font)
<a name="l00056"></a>00056 <span class="keywordflow">return</span>;
<a name="l00057"></a>00057
<a name="l00058"></a>00058 <span class="keywordflow">if</span> (!(flags & <a class="code" href="group__gfx2d.html#gga57e16cd48de3b9a989056ff8df26f8454886ddf8e7152c7de68ce148eeba005" title="Write by baseline, x and y are treated as the pen position on a baseline.">CS_WRITE_BASELINE</a>)) pen_y += font-><a class="code" href="structiFont.html#4bbbbf7fac4f9eaa28e1bfaa7c30cdaf" title="Get the font&#39;s ascent in pixels.">GetAscent</a> ();
<a name="l00059"></a>00059
<a name="l00060"></a>00060 <a class="code" href="structcsFontCache_1_1KnownFont.html" title="A font known to the cache.">csSoftFontCache::KnownFont</a>* knownFont = cache-><a class="code" href="classcsFontCache.html#b1e554e9aecffc78c9bdb61d5ebf3335" title="Request whether a font is known already.">GetCachedFont</a> (font);
<a name="l00061"></a>00061 <span class="keywordflow">if</span> (knownFont == 0) knownFont = cache-><a class="code" href="classcsFontCache.html#c0a20b2fe3fc29d13c78a98b9a0220c5" title="Set up stuff to cache glyphs of this font.">CacheFont</a> (font);
<a name="l00062"></a>00062
<a name="l00063"></a>00063 <span class="keywordtype">size_t</span> textLen = isWide ? wcslen ((<span class="keywordtype">wchar_t</span>*)text) : strlen ((<span class="keywordtype">char</span>*)text);
<a name="l00064"></a>00064 <span class="keywordtype">int</span> charW, charH, advance = 0;
<a name="l00065"></a>00065 <span class="keywordtype">bool</span> firstchar = <span class="keyword">true</span>;
<a name="l00066"></a>00066 <span class="keywordflow">while</span> (textLen > 0)
<a name="l00067"></a>00067 {
<a name="l00068"></a>00068 <a class="code" href="group__util.html#g47e911f87ff568b2779f26cf226f5070" title="A single char in a UTF32 encoded string.">utf32_char</a> glyph;
<a name="l00069"></a>00069 <span class="keywordflow">if</span> (isWide)
<a name="l00070"></a>00070 {
<a name="l00071"></a>00071 <span class="keywordtype">int</span> skip = <a class="code" href="classcsUnicodeTransform.html#24c171b2e92da381499801aba4422106" title="Decode an Unicode code point encoded in UTF-8.">csUnicodeTransform::Decode</a> ((<span class="keywordtype">wchar_t</span>*)text, textLen, glyph, 0);
<a name="l00072"></a>00072 <span class="keywordflow">if</span> (skip == 0) <span class="keywordflow">break</span>;
<a name="l00073"></a>00073
<a name="l00074"></a>00074 text = ((<span class="keywordtype">wchar_t</span>*)text + skip);
<a name="l00075"></a>00075 textLen -= skip;
<a name="l00076"></a>00076 }
<a name="l00077"></a>00077 <span class="keywordflow">else</span>
<a name="l00078"></a>00078 {
<a name="l00079"></a>00079 <span class="keywordtype">int</span> skip = <a class="code" href="classcsUnicodeTransform.html#21e5a75955302bbc73751a4dc459af54" title="Decode an Unicode code point encoded in UTF-8.">csUnicodeTransform::UTF8Decode</a> ((<a class="code" href="group__util.html#g60f3213e4468d7d223f3a27ad792ad38" title="A single char in a UTF8 encoded string.">utf8_char</a>*)text, textLen, glyph, 0);
<a name="l00080"></a>00080 <span class="keywordflow">if</span> (skip == 0) <span class="keywordflow">break</span>;
<a name="l00081"></a>00081
<a name="l00082"></a>00082 text = ((<a class="code" href="group__util.html#g60f3213e4468d7d223f3a27ad792ad38" title="A single char in a UTF8 encoded string.">utf8_char</a>*)text + skip);
<a name="l00083"></a>00083 textLen -= skip;
<a name="l00084"></a>00084 }
<a name="l00085"></a>00085
<a name="l00086"></a>00086 <a class="code" href="structcsSoftFontCache_1_1SoftGlyphCacheData.html">csSoftFontCache::SoftGlyphCacheData</a>* cacheData =
<a name="l00087"></a>00087 (<a class="code" href="structcsSoftFontCache_1_1SoftGlyphCacheData.html">csSoftFontCache::SoftGlyphCacheData</a>*)cache-><a class="code" href="classcsFontCache.html#61305de121a1d7b55ba5371275095f8e" title="Store glyph-specific information.">CacheGlyph</a> (knownFont,
<a name="l00088"></a>00088 glyph, flags);
<a name="l00089"></a>00089 <span class="keywordflow">if</span> (!cacheData-><a class="code" href="structcsFontCache_1_1GlyphCacheData.html#110992ec2310e52196321b8deffb76ab" title="Does this font have this glyph?">hasGlyph</a>)
<a name="l00090"></a>00090 {
<a name="l00091"></a>00091 <span class="comment">// fall back to the default glyph (CS_FONT_DEFAULT_GLYPH)</span>
<a name="l00092"></a>00092 cacheData = (<a class="code" href="structcsSoftFontCache_1_1SoftGlyphCacheData.html">csSoftFontCache::SoftGlyphCacheData</a>*)cache-><a class="code" href="classcsFontCache.html#61305de121a1d7b55ba5371275095f8e" title="Store glyph-specific information.">CacheGlyph</a> (
<a name="l00093"></a>00093 knownFont, <a class="code" href="group__gfx2d.html#g3721ddc874319a718319041805acba34" title="The default char, drawn in case a glyph wasn&#39;t present in the font.">CS_FONT_DEFAULT_GLYPH</a>, flags);
<a name="l00094"></a>00094 <span class="keywordflow">if</span> (!cacheData-><a class="code" href="structcsFontCache_1_1GlyphCacheData.html#110992ec2310e52196321b8deffb76ab" title="Does this font have this glyph?">hasGlyph</a>) <span class="keywordflow">continue</span>;
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096
<a name="l00097"></a>00097 <a class="code" href="structcsBitmapMetrics.html" title="Metrics for a glyph that are dependent from whether a simple or antialiased image...">csBitmapMetrics</a>* bmetrics;
<a name="l00098"></a>00098 <span class="keywordflow">if</span> (cacheData-><a class="code" href="structcsSoftFontCache_1_1SoftGlyphCacheData.html#746fd4166df2603b83a7e46a3df7f6e0">glyphAlphaDataBuf</a>.<a class="code" href="classcsRef.html#620198af96e2f744bab6207d9c546ed8" title="Smart pointer validity check.">IsValid</a>())
<a name="l00099"></a>00099 {
<a name="l00100"></a>00100 bmetrics = &cacheData-><a class="code" href="structcsSoftFontCache_1_1SoftGlyphCacheData.html#ea2a4006e5374fefbae5ac7e650086d8">alphaMetrics</a>;
<a name="l00101"></a>00101 }
<a name="l00102"></a>00102 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (cacheData-><a class="code" href="structcsSoftFontCache_1_1SoftGlyphCacheData.html#f7933549ac26e3054d4d30ef323a295f">glyphDataBuf</a>.<a class="code" href="classcsRef.html#620198af96e2f744bab6207d9c546ed8" title="Smart pointer validity check.">IsValid</a>())
<a name="l00103"></a>00103 {
<a name="l00104"></a>00104 bmetrics = &cacheData-><a class="code" href="structcsSoftFontCache_1_1SoftGlyphCacheData.html#c52ddd294102d54be1a830ea320ad67a">bitmapMetrics</a>;
<a name="l00105"></a>00105 }
<a name="l00106"></a>00106 <span class="keywordflow">else</span>
<a name="l00107"></a>00107 <span class="keywordflow">continue</span>;
<a name="l00108"></a>00108
<a name="l00109"></a>00109 <span class="keyword">register</span> <a class="code" href="group__util.html#gdde6aaee8457bee49c2a92621fe22b79" title="unsigned 8-bit integer (0..255)">uint8</a> *CharImageAlpha = cacheData-><a class="code" href="structcsSoftFontCache_1_1SoftGlyphCacheData.html#e4e306d6c020c90649cc2ae576f4f768">glyphAlphaData</a>;
<a name="l00110"></a>00110 <span class="keyword">register</span> <a class="code" href="group__util.html#gdde6aaee8457bee49c2a92621fe22b79" title="unsigned 8-bit integer (0..255)">uint8</a> *CharImage = cacheData-><a class="code" href="structcsSoftFontCache_1_1SoftGlyphCacheData.html#4bd2ffcc0b58dc478b7bd65d026d880c">glyphData</a>;
<a name="l00111"></a>00111
<a name="l00112"></a>00112 charW = bmetrics-><a class="code" href="structcsBitmapMetrics.html#0476b883a91814827a3a74b9478e46c1" title="Width of the glyph image.">width</a>;
<a name="l00113"></a>00113 charH = bmetrics-><a class="code" href="structcsBitmapMetrics.html#04f8a98cd4bb13e503dc04d2a2a74870" title="Height of the glyph image.">height</a>;
<a name="l00114"></a>00114
<a name="l00115"></a>00115 <span class="keywordtype">int</span> y = pen_y - bmetrics-><a class="code" href="structcsBitmapMetrics.html#60c8d7a93ceeb76dd1b7385a681cd227" title="Y offset of the image to the pen position.">top</a>;
<a name="l00116"></a>00116
<a name="l00117"></a>00117 <span class="comment">// If we are advancing more than the last char was wide, we have to</span>
<a name="l00118"></a>00118 <span class="comment">// fill the 'gap' with bg.</span>
<a name="l00119"></a>00119
<a name="l00120"></a>00120 <span class="keywordtype">int</span> x = pen_x - (advance > 0 ? advance : 0) + (bmetrics-><a class="code" href="structcsBitmapMetrics.html#decd5c98d4de92f88d8b37460cb2bacb" title="X offset of the image to the pen position.">left</a> < 0 ? bmetrics-><a class="code" href="structcsBitmapMetrics.html#decd5c98d4de92f88d8b37460cb2bacb" title="X offset of the image to the pen position.">left</a> : 0);
<a name="l00121"></a>00121 advance += bmetrics-><a class="code" href="structcsBitmapMetrics.html#decd5c98d4de92f88d8b37460cb2bacb" title="X offset of the image to the pen position.">left</a>;
<a name="l00122"></a>00122
<a name="l00123"></a>00123 <span class="comment">// Hack: in case the first char has a negative left bitmap offset,</span>
<a name="l00124"></a>00124 <span class="comment">// some of the background isn't drawn. Fix that.</span>
<a name="l00125"></a>00125 <span class="keywordflow">if</span> (firstchar)
<a name="l00126"></a>00126 {
<a name="l00127"></a>00127 <span class="keywordflow">if</span> (advance < 0)
<a name="l00128"></a>00128 {
<a name="l00129"></a>00129 advance = 0;
<a name="l00130"></a>00130 }
<a name="l00131"></a>00131 firstchar = <span class="keyword">false</span>;
<a name="l00132"></a>00132 }
<a name="l00133"></a>00133
<a name="l00134"></a>00134 <span class="keywordflow">if</span> (alphaBG != 0)
<a name="l00135"></a>00135 {
<a name="l00136"></a>00136 <span class="keywordflow">while</span> (advance > 0)
<a name="l00137"></a>00137 {
<a name="l00138"></a>00138 <span class="keywordflow">if</span> (x >= ClipX2)
<a name="l00139"></a>00139 <span class="keywordflow">return</span>;
<a name="l00140"></a>00140
<a name="l00141"></a>00141 <span class="keywordtype">int</span> cury = y;
<a name="l00142"></a>00142 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < charH; i++, cury++)
<a name="l00143"></a>00143 {
<a name="l00144"></a>00144 <span class="keywordflow">if</span> ((cury < ClipY1) || (cury >= ClipY2)) <span class="keywordflow">continue</span>;
<a name="l00145"></a>00145 <span class="keyword">register</span> Tpixel *VRAM = (Tpixel*)G2D-><a class="code" href="classcsGraphics2D.html#68beac8a1ae92e157a916b9d55f9f8ea" title="Same but exposed through iGraphics2D interface.">GetPixelAt</a> (x, cury);
<a name="l00146"></a>00146 <span class="keywordflow">if</span> (x >= ClipX1) mixerBG.Mix (*VRAM);
<a name="l00147"></a>00147 }
<a name="l00148"></a>00148 x++; advance--;
<a name="l00149"></a>00149 }
<a name="l00150"></a>00150 }
<a name="l00151"></a>00151 <span class="keywordflow">else</span>
<a name="l00152"></a>00152 {
<a name="l00153"></a>00153 <span class="keywordflow">if</span> (advance > 0)
<a name="l00154"></a>00154 {
<a name="l00155"></a>00155 x += advance;
<a name="l00156"></a>00156 advance = 0;
<a name="l00157"></a>00157 }
<a name="l00158"></a>00158 }
<a name="l00159"></a>00159
<a name="l00160"></a>00160 <span class="keywordflow">if</span> (x >= ClipX2)
<a name="l00161"></a>00161 <span class="keywordflow">return</span>;
<a name="l00162"></a>00162
<a name="l00163"></a>00163 <span class="comment">// If character is completely outside the clipping rectangle, continue</span>
<a name="l00164"></a>00164 <span class="keywordflow">if</span> (!((x + charW <= ClipX1) || (x >= ClipX2)
<a name="l00165"></a>00165 || (y + charH <= ClipY1) || (y >= ClipY2)))
<a name="l00166"></a>00166 {
<a name="l00167"></a>00167 <span class="keywordtype">int</span> cury = y;
<a name="l00168"></a>00168
<a name="l00169"></a>00169 <span class="keywordtype">int</span> oldAdvance = advance;
<a name="l00170"></a>00170 <span class="comment">// If character should not be clipped, go the fast path</span>
<a name="l00171"></a>00171 <span class="keywordflow">if</span> ((x < ClipX1) || (x + charW >= ClipX2)
<a name="l00172"></a>00172 || (y < ClipY1) || (y + charH >= ClipY2))
<a name="l00173"></a>00173 {
<a name="l00174"></a>00174 <span class="comment">// Perform full clipping</span>
<a name="l00175"></a>00175 <span class="keywordtype">int</span> lX = x < ClipX1 ? ClipX1 - x : 0;
<a name="l00176"></a>00176 <span class="keywordtype">int</span> rX = x + charW >= ClipX2 ? ClipX2 - x : charW;
<a name="l00177"></a>00177 <span class="keywordtype">int</span> lBytes = CharImageAlpha ? lX : lX >> 3;
<a name="l00178"></a>00178 <span class="keywordtype">int</span> shiftX = CharImageAlpha ? 0 : lX & 7;
<a name="l00179"></a>00179 <span class="keywordtype">int</span> bbl = CharImageAlpha ? charW : (charW + 7) / 8; <span class="comment">// bytes per line</span>
<a name="l00180"></a>00180 <span class="keywordtype">int</span> lAbsX = x + lX;
<a name="l00181"></a>00181 <a class="code" href="group__util.html#gdde6aaee8457bee49c2a92621fe22b79" title="unsigned 8-bit integer (0..255)">uint8</a> *p = CharImageAlpha ? CharImageAlpha - bbl : CharImage - bbl;
<a name="l00182"></a>00182
<a name="l00183"></a>00183 <span class="keywordflow">if</span> (CharImageAlpha)
<a name="l00184"></a>00184 {
<a name="l00185"></a>00185 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < charH; i++, cury++)
<a name="l00186"></a>00186 {
<a name="l00187"></a>00187 advance = oldAdvance;
<a name="l00188"></a>00188 p += bbl;
<a name="l00189"></a>00189 <span class="keywordflow">if</span> ((cury < ClipY1) || (cury >= ClipY2))
<a name="l00190"></a>00190 {
<a name="l00191"></a>00191 <span class="keywordflow">if</span> (advance < 0) advance = MIN(0, advance + (rX - lX));
<a name="l00192"></a>00192 <span class="keywordflow">continue</span>;
<a name="l00193"></a>00193 }
<a name="l00194"></a>00194 CharImageAlpha = p + lBytes;
<a name="l00195"></a>00195 <span class="keyword">register</span> <a class="code" href="group__util.html#gdde6aaee8457bee49c2a92621fe22b79" title="unsigned 8-bit integer (0..255)">uint8</a> CharLine = (*CharImageAlpha++) << shiftX;
<a name="l00196"></a>00196 <span class="keyword">register</span> Tpixel* VRAM = (Tpixel*)G2D-><a class="code" href="classcsGraphics2D.html#68beac8a1ae92e157a916b9d55f9f8ea" title="Same but exposed through iGraphics2D interface.">GetPixelAt</a> (lAbsX, cury);
<a name="l00197"></a>00197 <span class="comment">// If we are advancing less than the last char was wide, the current</span>
<a name="l00198"></a>00198 <span class="comment">// and last chars overlap. So we can't draw opaque, but have to draw</span>
<a name="l00199"></a>00199 <span class="comment">// transparent instead.</span>
<a name="l00200"></a>00200 <span class="keywordflow">if</span> (advance >= 0)
<a name="l00201"></a>00201 {
<a name="l00202"></a>00202 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = lX; j < rX; j++)
<a name="l00203"></a>00203 {
<a name="l00204"></a>00204 <span class="keywordflow">if</span> (CharLine == 0xff)
<a name="l00205"></a>00205 {
<a name="l00206"></a>00206 mixerFG.Mix (*VRAM);
<a name="l00207"></a>00207 }
<a name="l00208"></a>00208 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (CharLine == 0x00)
<a name="l00209"></a>00209 {
<a name="l00210"></a>00210 mixerBG.Mix (*VRAM);
<a name="l00211"></a>00211 }
<a name="l00212"></a>00212 <span class="keywordflow">else</span>
<a name="l00213"></a>00213 {
<a name="l00214"></a>00214 <span class="comment">// @@@ Could be more optimal, probably.</span>
<a name="l00215"></a>00215 Tpixel mixedFG = *VRAM;
<a name="l00216"></a>00216 mixerFG.Mix (mixedFG);
<a name="l00217"></a>00217 mixerBG.Mix (*VRAM);
<a name="l00218"></a>00218
<a name="l00219"></a>00219 Tpixmixer3 mixer (G2D, mixedFG, CharLine);
<a name="l00220"></a>00220 mixer.Mix (*VRAM);
<a name="l00221"></a>00221 }
<a name="l00222"></a>00222 VRAM++;
<a name="l00223"></a>00223 <span class="keywordflow">if</span> (j < rX-1) CharLine = (*CharImageAlpha++);
<a name="l00224"></a>00224 } <span class="comment">/* endfor */</span>
<a name="l00225"></a>00225 }
<a name="l00226"></a>00226 <span class="keywordflow">else</span>
<a name="l00227"></a>00227 {
<a name="l00228"></a>00228 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = lX; j < rX; j++)
<a name="l00229"></a>00229 {
<a name="l00230"></a>00230 <span class="keywordflow">if</span> (CharLine == 0xff)
<a name="l00231"></a>00231 {
<a name="l00232"></a>00232 mixerFG.Mix (*VRAM);
<a name="l00233"></a>00233 }
<a name="l00234"></a>00234 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (CharLine != 0x00)
<a name="l00235"></a>00235 {
<a name="l00236"></a>00236 <span class="comment">// @@@ Could be more optimal, probably.</span>
<a name="l00237"></a>00237 Tpixel mixedFG = *VRAM;
<a name="l00238"></a>00238 mixerFG.Mix (mixedFG);
<a name="l00239"></a>00239
<a name="l00240"></a>00240 Tpixmixer3 mixer (G2D, mixedFG, CharLine);
<a name="l00241"></a>00241 mixer.Mix (*VRAM);
<a name="l00242"></a>00242 }
<a name="l00243"></a>00243 VRAM++;
<a name="l00244"></a>00244 <span class="keywordflow">if</span> (j < rX-1) CharLine = (*CharImageAlpha++);
<a name="l00245"></a>00245 } <span class="comment">/* endfor */</span>
<a name="l00246"></a>00246 <span class="keywordflow">if</span> (advance < 0) advance++;
<a name="l00247"></a>00247 }
<a name="l00248"></a>00248 }
<a name="l00249"></a>00249 }
<a name="l00250"></a>00250 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (CharImage)
<a name="l00251"></a>00251 {
<a name="l00252"></a>00252 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < charH; i++, cury++)
<a name="l00253"></a>00253 {
<a name="l00254"></a>00254 advance = oldAdvance;
<a name="l00255"></a>00255 p += bbl;
<a name="l00256"></a>00256 <span class="keywordflow">if</span> ((cury < ClipY1) || (cury >= ClipY2))
<a name="l00257"></a>00257 {
<a name="l00258"></a>00258 <span class="keywordflow">if</span> (advance < 0) advance = MIN(0, advance + (rX - lX));
<a name="l00259"></a>00259 <span class="keywordflow">continue</span>;
<a name="l00260"></a>00260 }
<a name="l00261"></a>00261 CharImage = p + lBytes;
<a name="l00262"></a>00262 <span class="keyword">register</span> <a class="code" href="group__util.html#gdde6aaee8457bee49c2a92621fe22b79" title="unsigned 8-bit integer (0..255)">uint8</a> CharLine = (*CharImage++) << shiftX;
<a name="l00263"></a>00263 <span class="keyword">register</span> Tpixel* VRAM = (Tpixel*)G2D-><a class="code" href="classcsGraphics2D.html#68beac8a1ae92e157a916b9d55f9f8ea" title="Same but exposed through iGraphics2D interface.">GetPixelAt</a> (lAbsX, cury);
<a name="l00264"></a>00264 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = lX; j < rX; j++)
<a name="l00265"></a>00265 {
<a name="l00266"></a>00266 <span class="keywordflow">if</span> (advance >= 0)
<a name="l00267"></a>00267 {
<a name="l00268"></a>00268 <span class="keywordflow">if</span> (CharLine & 0x80)
<a name="l00269"></a>00269 mixerFG.Mix (*VRAM++);
<a name="l00270"></a>00270 <span class="keywordflow">else</span>
<a name="l00271"></a>00271 mixerBG.Mix (*VRAM++);
<a name="l00272"></a>00272 }
<a name="l00273"></a>00273 <span class="keywordflow">else</span>
<a name="l00274"></a>00274 {
<a name="l00275"></a>00275 <span class="keywordflow">if</span> (CharLine & 0x80)
<a name="l00276"></a>00276 mixerFG.Mix (*VRAM++);
<a name="l00277"></a>00277 <span class="keywordflow">else</span>
<a name="l00278"></a>00278 VRAM++;
<a name="l00279"></a>00279 advance++;
<a name="l00280"></a>00280 }
<a name="l00281"></a>00281 <span class="keywordflow">if</span> ((j & 7) == 7)
<a name="l00282"></a>00282 CharLine = (*CharImage++);
<a name="l00283"></a>00283 <span class="keywordflow">else</span>
<a name="l00284"></a>00284 CharLine += CharLine;
<a name="l00285"></a>00285 } <span class="comment">/* endfor */</span>
<a name="l00286"></a>00286 }
<a name="l00287"></a>00287 }
<a name="l00288"></a>00288 }
<a name="l00289"></a>00289 <span class="keywordflow">else</span>
<a name="l00290"></a>00290 {
<a name="l00291"></a>00291 <span class="comment">// no clipping</span>
<a name="l00292"></a>00292 <span class="keywordflow">if</span> (CharImageAlpha)
<a name="l00293"></a>00293 {
<a name="l00294"></a>00294 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < charH; i++, cury++)
<a name="l00295"></a>00295 {
<a name="l00296"></a>00296 advance = oldAdvance;
<a name="l00297"></a>00297 <span class="keyword">register</span> Tpixel* VRAM = (Tpixel*)G2D-><a class="code" href="classcsGraphics2D.html#68beac8a1ae92e157a916b9d55f9f8ea" title="Same but exposed through iGraphics2D interface.">GetPixelAt</a> (x, cury);
<a name="l00298"></a>00298 <span class="keyword">register</span> <span class="keywordtype">unsigned</span> pixW = charW;
<a name="l00299"></a>00299 <span class="keyword">register</span> <span class="keywordtype">int</span> pix;
<a name="l00300"></a>00300 <span class="keywordflow">for</span> (pix = pixW; pix > 0; pix--)
<a name="l00301"></a>00301 {
<a name="l00302"></a>00302 <span class="keyword">register</span> <a class="code" href="group__util.html#gdde6aaee8457bee49c2a92621fe22b79" title="unsigned 8-bit integer (0..255)">uint8</a> CharLine = (*CharImageAlpha++);
<a name="l00303"></a>00303 <span class="keywordflow">if</span> (advance < 0)
<a name="l00304"></a>00304 {
<a name="l00305"></a>00305 <span class="keywordflow">if</span> (CharLine == 0xff)
<a name="l00306"></a>00306 {
<a name="l00307"></a>00307 mixerFG.Mix (*VRAM);
<a name="l00308"></a>00308 }
<a name="l00309"></a>00309 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (CharLine != 0x00)
<a name="l00310"></a>00310 {
<a name="l00311"></a>00311 <span class="comment">// @@@ Could be more optimal, probably.</span>
<a name="l00312"></a>00312 Tpixel mixedFG = *VRAM;
<a name="l00313"></a>00313 mixerFG.Mix (mixedFG);
<a name="l00314"></a>00314
<a name="l00315"></a>00315 Tpixmixer3 mixer (G2D, mixedFG, CharLine);
<a name="l00316"></a>00316 mixer.Mix (*VRAM);
<a name="l00317"></a>00317 }
<a name="l00318"></a>00318 }
<a name="l00319"></a>00319 <span class="keywordflow">else</span>
<a name="l00320"></a>00320 {
<a name="l00321"></a>00321 <span class="keywordflow">if</span> (CharLine == 0xff)
<a name="l00322"></a>00322 {
<a name="l00323"></a>00323 mixerFG.Mix (*VRAM);
<a name="l00324"></a>00324 }
<a name="l00325"></a>00325 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (CharLine == 0x00)
<a name="l00326"></a>00326 {
<a name="l00327"></a>00327 mixerBG.Mix (*VRAM);
<a name="l00328"></a>00328 }
<a name="l00329"></a>00329 <span class="keywordflow">else</span>
<a name="l00330"></a>00330 {
<a name="l00331"></a>00331 <span class="comment">// @@@ Could be more optimal, probably.</span>
<a name="l00332"></a>00332 Tpixel mixedFG = *VRAM;
<a name="l00333"></a>00333 mixerFG.Mix (mixedFG);
<a name="l00334"></a>00334 mixerBG.Mix (*VRAM);
<a name="l00335"></a>00335
<a name="l00336"></a>00336 Tpixmixer3 mixer (G2D, mixedFG, CharLine);
<a name="l00337"></a>00337 mixer.Mix (*VRAM);
<a name="l00338"></a>00338 }
<a name="l00339"></a>00339 }
<a name="l00340"></a>00340 <span class="keywordflow">if</span> (advance < 0) advance++;
<a name="l00341"></a>00341 VRAM++;
<a name="l00342"></a>00342 }
<a name="l00343"></a>00343 }
<a name="l00344"></a>00344 }
<a name="l00345"></a>00345 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (CharImage)
<a name="l00346"></a>00346 {
<a name="l00347"></a>00347 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < charH; i++, cury++)
<a name="l00348"></a>00348 {
<a name="l00349"></a>00349 <span class="keyword">register</span> Tpixel* VRAM = (Tpixel*)G2D-><a class="code" href="classcsGraphics2D.html#68beac8a1ae92e157a916b9d55f9f8ea" title="Same but exposed through iGraphics2D interface.">GetPixelAt</a> (x, cury);
<a name="l00350"></a>00350 <span class="keyword">register</span> <span class="keywordtype">unsigned</span> pixW = charW;
<a name="l00351"></a>00351 <span class="keywordflow">while</span> (pixW)
<a name="l00352"></a>00352 {
<a name="l00353"></a>00353 <span class="keyword">register</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> CharLine = *CharImage++;
<a name="l00354"></a>00354 <span class="keyword">register</span> <span class="keywordtype">int</span> pix;
<a name="l00355"></a>00355 <span class="keywordflow">for</span> (pix = pixW < 8 ? pixW : 8, pixW -= pix; CharLine && pix; pix--)
<a name="l00356"></a>00356 {
<a name="l00357"></a>00357 <span class="keywordflow">if</span> (advance < 0)
<a name="l00358"></a>00358 {
<a name="l00359"></a>00359 <span class="keywordflow">if</span> (CharLine & 0x80)
<a name="l00360"></a>00360 mixerFG.Mix (*VRAM++);
<a name="l00361"></a>00361 <span class="keywordflow">else</span>
<a name="l00362"></a>00362 VRAM++;
<a name="l00363"></a>00363 <span class="comment">// Addition is faster than shift, at least on i586+</span>
<a name="l00364"></a>00364 CharLine += CharLine;
<a name="l00365"></a>00365 }
<a name="l00366"></a>00366 <span class="keywordflow">else</span>
<a name="l00367"></a>00367 {
<a name="l00368"></a>00368 <span class="keywordflow">if</span> (CharLine & 0x80)
<a name="l00369"></a>00369 mixerFG.Mix (*VRAM++);
<a name="l00370"></a>00370 <span class="keywordflow">else</span>
<a name="l00371"></a>00371 mixerBG.Mix (*VRAM++);
<a name="l00372"></a>00372 <span class="comment">// Addition is faster than shift, at least on i586+</span>
<a name="l00373"></a>00373 CharLine += CharLine;
<a name="l00374"></a>00374 }
<a name="l00375"></a>00375 <span class="keywordflow">if</span> (advance < 0) advance++;
<a name="l00376"></a>00376 } <span class="comment">/* endfor */</span>
<a name="l00377"></a>00377 <span class="keywordflow">if</span> (advance < 0)
<a name="l00378"></a>00378 {
<a name="l00379"></a>00379 VRAM -= advance;
<a name="l00380"></a>00380 pix += advance;
<a name="l00381"></a>00381 }
<a name="l00382"></a>00382 <span class="keywordflow">while</span> (pix--)
<a name="l00383"></a>00383 mixerBG.Mix (*VRAM++);
<a name="l00384"></a>00384 }
<a name="l00385"></a>00385 }
<a name="l00386"></a>00386 }
<a name="l00387"></a>00387 } <span class="comment">/* endif */</span>
<a name="l00388"></a>00388 }
<a name="l00389"></a>00389
<a name="l00390"></a>00390 pen_x += cacheData-><a class="code" href="structcsFontCache_1_1GlyphCacheData.html#8590499841ca8f452c9fd23515e6123a" title="Glyph metrics.">glyphMetrics</a>.<a class="code" href="structcsGlyphMetrics.html#1262dc16a7cfb279477286f15fd1d18c" title="Amount of pixels the pen needs to advance after the glyph.">advance</a>;
<a name="l00391"></a>00391 advance += cacheData-><a class="code" href="structcsFontCache_1_1GlyphCacheData.html#8590499841ca8f452c9fd23515e6123a" title="Glyph metrics.">glyphMetrics</a>.<a class="code" href="structcsGlyphMetrics.html#1262dc16a7cfb279477286f15fd1d18c" title="Amount of pixels the pen needs to advance after the glyph.">advance</a> - (charW + bmetrics-><a class="code" href="structcsBitmapMetrics.html#decd5c98d4de92f88d8b37460cb2bacb" title="X offset of the image to the pen position.">left</a>);
<a name="l00392"></a>00392 }
<a name="l00393"></a>00393 cache-><a class="code" href="classcsFontCache.html#cbf8f584e177e022eadea2553946dad5" title="Delete empty PlaneGlyphs from known fonts.">PurgeEmptyPlanes</a> ();
<a name="l00394"></a>00394
<a name="l00395"></a>00395 }
<a name="l00396"></a>00396 };
<a name="l00397"></a>00397
<a name="l00400"></a>00400 <span class="preprocessor">#endif // __CS_CSPLUGINCOMMON_CANVAS_DRAW_TEXT_H___</span>
</pre></div><hr size="1"><address><small>Generated for Crystal Space 1.2.1 by
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distrib
>
Mandriva
>
2010.0
>
i586
>
media
>
contrib-release
>
by-pkgid
>
bad97183153701b09df5fae1052b1c30
>
files
>
1506
