bluecore/ftgl/FTPixmapGlyph.cpp

74 lines
1.7 KiB
C++
Raw Normal View History

2008-01-16 11:45:17 +00:00
#include "FTPixmapGlyph.h"
FTPixmapGlyph::FTPixmapGlyph( FT_GlyphSlot glyph)
: FTGlyph( glyph),
destWidth(0),
destHeight(0),
data(0)
{
err = FT_Render_Glyph( glyph, FT_RENDER_MODE_NORMAL);
if( err || ft_glyph_format_bitmap != glyph->format)
{
return;
}
FT_Bitmap bitmap = glyph->bitmap;
//check the pixel mode
//ft_pixel_mode_grays
int srcWidth = bitmap.width;
int srcHeight = bitmap.rows;
destWidth = srcWidth;
destHeight = srcHeight;
if( destWidth && destHeight)
{
data = new unsigned char[destWidth * destHeight * 2];
unsigned char* src = bitmap.buffer;
unsigned char* dest = data + ((destHeight - 1) * destWidth * 2);
size_t destStep = destWidth * 2 * 2;
for( int y = 0; y < srcHeight; ++y)
{
for( int x = 0; x < srcWidth; ++x)
{
*dest++ = static_cast<unsigned char>(255);
*dest++ = *src++;
}
dest -= destStep;
}
destHeight = srcHeight;
}
pos.X(glyph->bitmap_left);
pos.Y(srcHeight - glyph->bitmap_top);
}
FTPixmapGlyph::~FTPixmapGlyph()
{
delete [] data;
}
const FTPoint& FTPixmapGlyph::Render( const FTPoint& pen)
{
glBitmap( 0, 0, 0.0f, 0.0f, pen.X() + pos.X(), pen.Y() - pos.Y(), (const GLubyte*)0);
if( data)
{
glPixelStorei( GL_UNPACK_ROW_LENGTH, 0);
glPixelStorei( GL_UNPACK_ALIGNMENT, 2);
glDrawPixels( destWidth, destHeight, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, (const GLvoid*)data);
}
glBitmap( 0, 0, 0.0f, 0.0f, -pos.X(), pos.Y(), (const GLubyte*)0);
return advance;
}