74 lines
1.7 KiB
C++
74 lines
1.7 KiB
C++
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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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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 * 2];
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unsigned char* src = bitmap.buffer;
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unsigned char* dest = data + ((destHeight - 1) * destWidth * 2);
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size_t destStep = destWidth * 2 * 2;
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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++ = static_cast<unsigned char>(255);
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*dest++ = *src++;
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}
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dest -= destStep;
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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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const FTPoint& FTPixmapGlyph::Render( const FTPoint& pen)
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{
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glBitmap( 0, 0, 0.0f, 0.0f, pen.X() + pos.X(), pen.Y() - pos.Y(), (const GLubyte*)0);
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if( data)
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{
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glPixelStorei( GL_UNPACK_ROW_LENGTH, 0);
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glPixelStorei( GL_UNPACK_ALIGNMENT, 2);
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glDrawPixels( destWidth, destHeight, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, (const GLvoid*)data);
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}
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glBitmap( 0, 0, 0.0f, 0.0f, -pos.X(), pos.Y(), (const GLubyte*)0);
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return advance;
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}
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