/*
* 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 <math.h>
#include "..\..\include\ftgl.h"
#include "..\..\include\ftgl\FTInternals.h"
#include "..\..\include\ftglyph\FTPixmapGlyphImpl.h"
//
// FTGLPixmapGlyph
//
FTPixmapGlyph::FTPixmapGlyph(FT_GlyphSlot glyph) :
FTGlyph(new FTPixmapGlyphImpl(glyph))
{}
FTPixmapGlyph::~FTPixmapGlyph()
{}
const FTPoint& FTPixmapGlyph::Render(const FTPoint& pen, int renderMode)
{
FTPixmapGlyphImpl *myimpl = dynamic_cast<FTPixmapGlyphImpl *>(impl);
return myimpl->RenderImpl(pen, renderMode);
}
//
// FTGLPixmapGlyphImpl
//
FTPixmapGlyphImpl::FTPixmapGlyphImpl(FT_GlyphSlot glyph)
: FTGlyphImpl(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);
}
FTPixmapGlyphImpl::~FTPixmapGlyphImpl()
{
delete [] data;
}
const FTPoint& FTPixmapGlyphImpl::RenderImpl(const FTPoint& pen,
int renderMode)
{
if(data)
{
float dx, dy;
dx = floor(pen.Xf() + pos.Xf());
dy = floor(pen.Yf() - pos.Yf());
glBitmap(0, 0, 0.0f, 0.0f, dx, dy, (const GLubyte*)0);
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, -dx, -dy, (const GLubyte*)0);
}
return advance;
}