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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 class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#include "FTPixmapGlyph.h"</span>
<a name="l00002"></a>00002
<a name="l00003"></a>00003 FTPixmapGlyph::FTPixmapGlyph( FT_GlyphSlot glyph)
<a name="l00004"></a>00004 : FTGlyph( glyph),
<a name="l00005"></a>00005 destWidth(0),
<a name="l00006"></a>00006 destHeight(0),
<a name="l00007"></a>00007 data(0)
<a name="l00008"></a>00008 {
<a name="l00009"></a>00009 err = FT_Render_Glyph( glyph, FT_RENDER_MODE_NORMAL);
<a name="l00010"></a>00010 <span class="keywordflow">if</span>( err || ft_glyph_format_bitmap != glyph->format)
<a name="l00011"></a>00011 {
<a name="l00012"></a>00012 <span class="keywordflow">return</span>;
<a name="l00013"></a>00013 }
<a name="l00014"></a>00014
<a name="l00015"></a>00015 FT_Bitmap bitmap = glyph->bitmap;
<a name="l00016"></a>00016
<a name="l00017"></a>00017 <span class="comment">//check the pixel mode</span>
<a name="l00018"></a>00018 <span class="comment">//ft_pixel_mode_grays</span>
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <span class="keywordtype">int</span> srcWidth = bitmap.width;
<a name="l00021"></a>00021 <span class="keywordtype">int</span> srcHeight = bitmap.rows;
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="comment">// FIXME What about dest alignment?</span>
<a name="l00024"></a>00024 destWidth = srcWidth;
<a name="l00025"></a>00025 destHeight = srcHeight;
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="keywordflow">if</span>( destWidth && destHeight)
<a name="l00028"></a>00028 {
<a name="l00029"></a>00029 data = <span class="keyword">new</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>[destWidth * destHeight * 4];
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="comment">// Get the current glColor.</span>
<a name="l00032"></a>00032 <span class="keywordtype">float</span> ftglColour[4];
<a name="l00033"></a>00033 glGetFloatv( GL_CURRENT_COLOR, ftglColour);
<a name="l00034"></a>00034
<a name="l00035"></a>00035 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> redComponent = static_cast<unsigned char>( ftglColour[0] * 255.0f);
<a name="l00036"></a>00036 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> greenComponent = static_cast<unsigned char>( ftglColour[1] * 255.0f);
<a name="l00037"></a>00037 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> blueComponent = static_cast<unsigned char>( ftglColour[2] * 255.0f);
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* src = bitmap.buffer;
<a name="l00040"></a>00040
<a name="l00041"></a>00041 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* dest = data + ((destHeight - 1) * destWidth) * 4;
<a name="l00042"></a>00042 size_t destStep = destWidth * 4 * 2;
<a name="l00043"></a>00043
<a name="l00044"></a>00044 <span class="keywordflow">if</span>( ftglColour[3] == 1.0f)
<a name="l00045"></a>00045 {
<a name="l00046"></a>00046 <span class="keywordflow">for</span>( <span class="keywordtype">int</span> y = 0; y < srcHeight; ++y)
<a name="l00047"></a>00047 {
<a name="l00048"></a>00048 <span class="keywordflow">for</span>( <span class="keywordtype">int</span> x = 0; x < srcWidth; ++x)
<a name="l00049"></a>00049 {
<a name="l00050"></a>00050 *dest++ = redComponent;
<a name="l00051"></a>00051 *dest++ = greenComponent;
<a name="l00052"></a>00052 *dest++ = blueComponent;
<a name="l00053"></a>00053 *dest++ = *src++;
<a name="l00054"></a>00054 }
<a name="l00055"></a>00055 dest -= destStep;
<a name="l00056"></a>00056 }
<a name="l00057"></a>00057 }
<a name="l00058"></a>00058 <span class="keywordflow">else</span>
<a name="l00059"></a>00059 {
<a name="l00060"></a>00060 <span class="keywordflow">for</span>( <span class="keywordtype">int</span> y = 0; y < srcHeight; ++y)
<a name="l00061"></a>00061 {
<a name="l00062"></a>00062 <span class="keywordflow">for</span>( <span class="keywordtype">int</span> x = 0; x < srcWidth; ++x)
<a name="l00063"></a>00063 {
<a name="l00064"></a>00064 *dest++ = redComponent;
<a name="l00065"></a>00065 *dest++ = greenComponent;
<a name="l00066"></a>00066 *dest++ = blueComponent;
<a name="l00067"></a>00067 *dest++ = static_cast<unsigned char>(ftglColour[3] * *src++);
<a name="l00068"></a>00068 }
<a name="l00069"></a>00069 dest -= destStep;
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071 }
<a name="l00072"></a>00072
<a name="l00073"></a>00073 destHeight = srcHeight;
<a name="l00074"></a>00074 }
<a name="l00075"></a>00075
<a name="l00076"></a>00076 pos.x = glyph->bitmap_left;
<a name="l00077"></a>00077 pos.y = srcHeight - glyph->bitmap_top;
<a name="l00078"></a>00078 }
<a name="l00079"></a>00079
<a name="l00080"></a>00080
<a name="l00081"></a>00081 FTPixmapGlyph::~FTPixmapGlyph()
<a name="l00082"></a>00082 {
<a name="l00083"></a>00083 <span class="keyword">delete</span> [] data;
<a name="l00084"></a>00084 }
<a name="l00085"></a>00085
<a name="l00086"></a>00086
<a name="l00087"></a>00087 <span class="keywordtype">float</span> FTPixmapGlyph::Render( <span class="keyword">const</span> FTPoint& pen)
<a name="l00088"></a>00088 {
<a name="l00089"></a>00089 <span class="keywordflow">if</span>( data)
<a name="l00090"></a>00090 {
<a name="l00091"></a>00091 <span class="comment">// Move the glyph origin</span>
<a name="l00092"></a>00092 glBitmap( 0, 0, 0.0f, 0.0f, pen.x + pos.x, pen.y - pos.y, (<span class="keyword">const</span> GLubyte*)0);
<a name="l00093"></a>00093
<a name="l00094"></a>00094 glPixelStorei( GL_UNPACK_ROW_LENGTH, 0);
<a name="l00095"></a>00095
<a name="l00096"></a>00096 glDrawPixels( destWidth, destHeight, GL_RGBA, GL_UNSIGNED_BYTE, (<span class="keyword">const</span> GLvoid*)data);
<a name="l00097"></a>00097
<a name="l00098"></a>00098 <span class="comment">// Restore the glyph origin</span>
<a name="l00099"></a>00099 glBitmap( 0, 0, 0.0f, 0.0f, -pen.x - pos.x, -pen.y + pos.y, (<span class="keyword">const</span> GLubyte*)0);
<a name="l00100"></a>00100 }
<a name="l00101"></a>00101
<a name="l00102"></a>00102 <span class="keywordflow">return</span> advance;
<a name="l00103"></a>00103 }
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