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/*
* FTGL - OpenGL font library
*
* Copyright (c) 2001-2004 Henry Maddocks <ftgl@opengl.geek.nz>
* Copyright (c) 2008 Sam Hocevar <sam@zoy.org>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "config.h"
#include <string>
#include "FTGL/ftgl.h"
#include "FTInternals.h"
#include "FTBitmapGlyphImpl.h"
//
// FTGLBitmapGlyph
//
FTBitmapGlyph::FTBitmapGlyph(FT_GlyphSlot glyph) :
FTGlyph(new FTBitmapGlyphImpl(glyph))
{}
FTBitmapGlyph::~FTBitmapGlyph()
{}
const FTPoint& FTBitmapGlyph::Render(const FTPoint& pen, int renderMode)
{
FTBitmapGlyphImpl *myimpl = dynamic_cast<FTBitmapGlyphImpl *>(impl);
return myimpl->RenderImpl(pen, renderMode);
}
//
// FTGLBitmapGlyphImpl
//
FTBitmapGlyphImpl::FTBitmapGlyphImpl(FT_GlyphSlot glyph)
: FTGlyphImpl(glyph),
destWidth(0),
destHeight(0),
data(0)
{
err = FT_Render_Glyph(glyph, FT_RENDER_MODE_MONO);
if(err || ft_glyph_format_bitmap != glyph->format)
{
return;
}
FT_Bitmap bitmap = glyph->bitmap;
unsigned int srcWidth = bitmap.width;
unsigned int srcHeight = bitmap.rows;
unsigned int srcPitch = bitmap.pitch;
destWidth = srcWidth;
destHeight = srcHeight;
destPitch = srcPitch;
if(destWidth && destHeight)
{
data = new unsigned char[destPitch * destHeight];
unsigned char* dest = data + ((destHeight - 1) * destPitch);
unsigned char* src = bitmap.buffer;
for(unsigned int y = 0; y < srcHeight; ++y)
{
memcpy(dest, src, srcPitch);
dest -= destPitch;
src += srcPitch;
}
}
pos = FTPoint(glyph->bitmap_left, static_cast<int>(srcHeight) - glyph->bitmap_top, 0.0);
}
FTBitmapGlyphImpl::~FTBitmapGlyphImpl()
{
delete [] data;
}
const FTPoint& FTBitmapGlyphImpl::RenderImpl(const FTPoint& pen, int renderMode)
{
if(data)
{
float dx, dy;
dx = pen.Xf() + pos.Xf();
dy = pen.Yf() - pos.Yf();
glBitmap(0, 0, 0.0f, 0.0f, dx, dy, (const GLubyte*)0);
glPixelStorei(GL_UNPACK_ROW_LENGTH, destPitch * 8);
glBitmap(destWidth, destHeight, 0.0f, 0.0, 0.0, 0.0,
(const GLubyte*)data);
glBitmap(0, 0, 0.0f, 0.0f, -dx, -dy, (const GLubyte*)0);
}
return advance;
}
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