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<title>FTGL: FTPixmapGlyph.cpp Source File</title>
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<h1>FTPixmapGlyph.cpp</h1><a href="FTPixmapGlyph_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 <span class="preprocessor">#include    "<a class="code" href="FTPixmapGlyph_8h.html">FTPixmapGlyph.h</a>"</span>
00002 
<a name="l00003"></a><a class="code" href="classFTPixmapGlyph.html#a0">00003</a> <a class="code" href="classFTPixmapGlyph.html#a0">FTPixmapGlyph::FTPixmapGlyph</a>( FT_GlyphSlot glyph)
00004 :   <a class="code" href="classFTGlyph.html">FTGlyph</a>( glyph),
00005     destWidth(0),
00006     destHeight(0),
00007     data(0)
00008 {
00009     err = FT_Render_Glyph( glyph, <a class="code" href="FTGL_8h.html#a2">FT_RENDER_MODE_NORMAL</a>);
00010     <span class="keywordflow">if</span>( err || ft_glyph_format_bitmap != glyph-&gt;format)
00011     {
00012         <span class="keywordflow">return</span>;
00013     }
00014 
00015     FT_Bitmap bitmap = glyph-&gt;bitmap;
00016 
00017     <span class="comment">//check the pixel mode</span>
00018     <span class="comment">//ft_pixel_mode_grays</span>
00019         
00020     <span class="keywordtype">int</span> srcWidth = bitmap.width;
00021     <span class="keywordtype">int</span> srcHeight = bitmap.rows;
00022     
00023    <span class="comment">// FIXME What about dest alignment?</span>
00024     destWidth = srcWidth;
00025     destHeight = srcHeight;
00026     
00027     <span class="keywordflow">if</span>( destWidth &amp;&amp; destHeight)
00028     {
00029         data = <span class="keyword">new</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>[destWidth * destHeight * 4];
00030     
00031         <span class="comment">// Get the current glColor.</span>
00032         <span class="keywordtype">float</span> ftglColour[4];
00033         glGetFloatv( GL_CURRENT_COLOR, ftglColour);
00034 
00035         <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> redComponent =   static_cast&lt;unsigned char&gt;( ftglColour[0] * 255.0f);
00036         <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> greenComponent = static_cast&lt;unsigned char&gt;( ftglColour[1] * 255.0f);
00037         <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> blueComponent =  static_cast&lt;unsigned char&gt;( ftglColour[2] * 255.0f);
00038 
00039         <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* src = bitmap.buffer;
00040 
00041         <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* dest = data + ((destHeight - 1) * destWidth) * 4;
00042         size_t destStep = destWidth * 4 * 2;
00043 
00044         <span class="keywordflow">if</span>( ftglColour[3] == 1.0f)
00045         {
00046             <span class="keywordflow">for</span>( <span class="keywordtype">int</span> y = 0; y &lt; srcHeight; ++y)
00047             {
00048                 <span class="keywordflow">for</span>( <span class="keywordtype">int</span> x = 0; x &lt; srcWidth; ++x)
00049                 {
00050                     *dest++ = redComponent;
00051                     *dest++ = greenComponent;
00052                     *dest++ = blueComponent;
00053                     *dest++ = *src++;
00054                 }
00055                 dest -= destStep;
00056             }
00057         }
00058         <span class="keywordflow">else</span>
00059         {
00060             <span class="keywordflow">for</span>( <span class="keywordtype">int</span> y = 0; y &lt; srcHeight; ++y)
00061             {
00062                 <span class="keywordflow">for</span>( <span class="keywordtype">int</span> x = 0; x &lt; srcWidth; ++x)
00063                 {
00064                     *dest++ = redComponent;
00065                     *dest++ = greenComponent;
00066                     *dest++ = blueComponent;
00067                     *dest++ = static_cast&lt;unsigned char&gt;(ftglColour[3] * *src++);
00068                 }
00069                 dest -= destStep;
00070             }
00071         }
00072         destHeight = srcHeight;
00073     }
00074 
00075     pos.<a class="code" href="classFTPoint.html#a7">X</a>( glyph-&gt;bitmap_left);
00076     pos.<a class="code" href="classFTPoint.html#a8">Y</a>( srcHeight - glyph-&gt;bitmap_top);
00077 }
00078 
00079 
<a name="l00080"></a><a class="code" href="classFTPixmapGlyph.html#a1">00080</a> <a class="code" href="classFTPixmapGlyph.html#a1">FTPixmapGlyph::~FTPixmapGlyph</a>()
00081 {
00082     <span class="keyword">delete</span> [] data;
00083 }
00084 
00085 
<a name="l00086"></a><a class="code" href="classFTPixmapGlyph.html#a2">00086</a> <span class="keyword">const</span> <a class="code" href="classFTPoint.html">FTPoint</a>&amp; <a class="code" href="classFTPixmapGlyph.html#a2">FTPixmapGlyph::Render</a>( <span class="keyword">const</span> <a class="code" href="classFTPoint.html">FTPoint</a>&amp; pen)
00087 {
00088     glBitmap( 0, 0, 0.0f, 0.0f, pen.<a class="code" href="classFTPoint.html#a7">X</a>() + pos.<a class="code" href="classFTPoint.html#a7">X</a>(), pen.<a class="code" href="classFTPoint.html#a8">Y</a>() - pos.<a class="code" href="classFTPoint.html#a8">Y</a>(), (<span class="keyword">const</span> GLubyte*)0);
00089     
00090     <span class="keywordflow">if</span>( data)
00091     {
00092         glPixelStorei( GL_UNPACK_ROW_LENGTH, 0);
00093         glDrawPixels( destWidth, destHeight, GL_RGBA, GL_UNSIGNED_BYTE, (<span class="keyword">const</span> GLvoid*)data);
00094     }
00095         
00096     glBitmap( 0, 0, 0.0f, 0.0f, -pos.<a class="code" href="classFTPoint.html#a7">X</a>(), pos.<a class="code" href="classFTPoint.html#a8">Y</a>(), (<span class="keyword">const</span> GLubyte*)0);
00097 
00098     <span class="keywordflow">return</span> advance;
00099 }
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