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Viewing changes to extern/bFTGL/src/FTPixmapGlyph.cpp

  • Committer: Bazaar Package Importer
  • Author(s): Florian Ernst
  • Date: 2005-11-06 12:40:03 UTC
  • mfrom: (1.1.2 upstream)
  • Revision ID: james.westby@ubuntu.com-20051106124003-3pgs7tcg5rox96xg
Tags: 2.37a-1.1
http://bugs.debian.org/333958
* Non-maintainer upload.
* Split out parts of 01_SConstruct_debian.dpatch again: root_build_dir
  really needs to get adjusted before the clean target runs - closes: #333958,
  see #288882 for reference

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extern/bFTGL/src/FTPixmapGlyph.cpp
 
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#include    "FTPixmapGlyph.h"
 
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FTPixmapGlyph::FTPixmapGlyph( FT_GlyphSlot glyph)
 
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:   FTGlyph( glyph),
 
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    destWidth(0),
 
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    destHeight(0),
 
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    data(0)
 
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{
 
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    err = FT_Render_Glyph( glyph, FT_RENDER_MODE_NORMAL);
 
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    if( err || ft_glyph_format_bitmap != glyph->format)
 
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    {
 
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        return;
 
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    }
 
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    FT_Bitmap bitmap = glyph->bitmap;
 
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    //check the pixel mode
 
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    //ft_pixel_mode_grays
 
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    int srcWidth = bitmap.width;
 
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    int srcHeight = bitmap.rows;
 
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   // FIXME What about dest alignment?
 
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    destWidth = srcWidth;
 
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    destHeight = srcHeight;
 
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    if( destWidth && destHeight)
 
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    {
 
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        data = new unsigned char[destWidth * destHeight * 4];
 
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        // Get the current glColor.
 
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        float ftglColour[4];
 
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//        glGetFloatv( GL_CURRENT_COLOR, ftglColour);
 
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                ftglColour[0] = ftglColour[1] = ftglColour[2] = ftglColour[3] = 1.0;
 
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        unsigned char redComponent =   static_cast<unsigned char>( ftglColour[0] * 255.0f);
 
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        unsigned char greenComponent = static_cast<unsigned char>( ftglColour[1] * 255.0f);
 
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        unsigned char blueComponent =  static_cast<unsigned char>( ftglColour[2] * 255.0f);
 
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        unsigned char* src = bitmap.buffer;
 
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        unsigned char* dest = data + ((destHeight - 1) * destWidth) * 4;
 
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        size_t destStep = destWidth * 4 * 2;
 
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        if( ftglColour[3] == 1.0f)
 
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        {
 
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            for( int y = 0; y < srcHeight; ++y)
 
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            {
 
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                for( int x = 0; x < srcWidth; ++x)
 
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                {
 
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                    *dest++ = redComponent;
 
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                    *dest++ = greenComponent;
 
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                    *dest++ = blueComponent;
 
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                    *dest++ = *src++;
 
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                }
 
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                dest -= destStep;
 
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            }
 
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        }
 
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        else
 
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        {
 
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            for( int y = 0; y < srcHeight; ++y)
 
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            {
 
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                for( int x = 0; x < srcWidth; ++x)
 
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                {
 
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                    *dest++ = redComponent;
 
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                    *dest++ = greenComponent;
 
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                    *dest++ = blueComponent;
 
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                    *dest++ = static_cast<unsigned char>(ftglColour[3] * *src++);
 
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                }
 
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                dest -= destStep;
 
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            }
 
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        }
 
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        destHeight = srcHeight;
 
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    }
 
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    pos.x = glyph->bitmap_left;
 
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    pos.y = srcHeight - glyph->bitmap_top;
 
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}
 
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FTPixmapGlyph::~FTPixmapGlyph()
 
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{
 
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    delete [] data;
 
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}
 
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#include <math.h>
 
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float FTPixmapGlyph::Render( const FTPoint& pen)
 
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{
 
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    if( data)
 
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    {
 
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                float dx, dy;
 
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                dx= floor( (pen.x + pos.x ) );
 
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                dy= ( (pen.y - pos.y ) );
 
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        // Move the glyph origin
 
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        glBitmap( 0, 0, 0.0f, 0.0f, dx, dy, (const GLubyte*)0);
 
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        glPixelStorei( GL_UNPACK_ROW_LENGTH, 0);
 
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        glDrawPixels( destWidth, destHeight, GL_RGBA, GL_UNSIGNED_BYTE, (const GLvoid*)data);
 
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        // Restore the glyph origin
 
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        glBitmap( 0, 0, 0.0f, 0.0f, -dx, -dy, (const GLubyte*)0);
 
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    }
 
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    return advance;
 
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}