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/*
* FTGL - OpenGL font library
*
* 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 "FTBufferGlyphImpl.h"
//
// FTGLBufferGlyph
//
FTBufferGlyph::FTBufferGlyph(FT_GlyphSlot glyph, FTBuffer *buffer) :
FTGlyph(new FTBufferGlyphImpl(glyph, buffer))
{}
FTBufferGlyph::~FTBufferGlyph()
{}
const FTPoint& FTBufferGlyph::Render(const FTPoint& pen, int renderMode)
{
FTBufferGlyphImpl *myimpl = dynamic_cast<FTBufferGlyphImpl *>(impl);
return myimpl->RenderImpl(pen, renderMode);
}
//
// FTGLBufferGlyphImpl
//
FTBufferGlyphImpl::FTBufferGlyphImpl(FT_GlyphSlot glyph, FTBuffer *p)
: FTGlyphImpl(glyph),
has_bitmap(false),
buffer(p)
{
err = FT_Render_Glyph(glyph, FT_RENDER_MODE_NORMAL);
if(err || glyph->format != ft_glyph_format_bitmap)
{
return;
}
bitmap = glyph->bitmap;
pixels = new unsigned char[bitmap.pitch * bitmap.rows];
memcpy(pixels, bitmap.buffer, bitmap.pitch * bitmap.rows);
if(bitmap.width && bitmap.rows)
{
has_bitmap = true;
corner = FTPoint(glyph->bitmap_left, glyph->bitmap_top);
}
}
FTBufferGlyphImpl::~FTBufferGlyphImpl()
{
delete[] pixels;
}
const FTPoint& FTBufferGlyphImpl::RenderImpl(const FTPoint& pen, int renderMode)
{
if(has_bitmap)
{
FTPoint pos(buffer->Pos() + pen + corner);
int dx = (int)(pos.Xf() + 0.5f);
int dy = buffer->Height() - (int)(pos.Yf() + 0.5f);
unsigned char * dest = buffer->Pixels() + dx + dy * buffer->Width();
for(int y = 0; y < bitmap.rows; y++)
{
// FIXME: change the loop bounds instead of doing this test
if(y + dy < 0 || y + dy >= buffer->Height()) continue;
for(int x = 0; x < bitmap.width; x++)
{
if(x + dx < 0 || x + dx >= buffer->Width()) continue;
unsigned char p = pixels[y * bitmap.pitch + x];
if(p)
{
dest[y * buffer->Width() + x] = p;
}
}
}
}
return advance;
}
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