//------------------------------------------------------------------------
bool font_engine_freetype_base::prepare_glyph(unsigned glyph_code)
{
m_glyph_index = FT_Get_Char_Index(m_cur_face, glyph_code);
m_last_error = FT_Load_Glyph(m_cur_face,
m_glyph_index,
m_hinting ? FT_LOAD_DEFAULT : FT_LOAD_NO_HINTING);
// m_hinting ? FT_LOAD_FORCE_AUTOHINT : FT_LOAD_NO_HINTING);
if(m_last_error == 0)
{
switch(m_glyph_rendering)
{
case glyph_ren_native_mono:
m_last_error = FT_Render_Glyph(m_cur_face->glyph, FT_RENDER_MODE_MONO);
if(m_last_error == 0)
{
decompose_ft_bitmap_mono(m_cur_face->glyph->bitmap,
m_cur_face->glyph->bitmap_left,
m_flip_y ? -m_cur_face->glyph->bitmap_top :
m_cur_face->glyph->bitmap_top,
m_flip_y,
m_scanline_bin,
m_scanlines_bin);
m_bounds.x1 = m_scanlines_bin.min_x();
m_bounds.y1 = m_scanlines_bin.min_y();
m_bounds.x2 = m_scanlines_bin.max_x();
m_bounds.y2 = m_scanlines_bin.max_y();
m_data_size = m_scanlines_bin.byte_size();
m_data_type = glyph_data_mono;
m_advance_x = int26p6_to_dbl(m_cur_face->glyph->advance.x);
m_advance_y = int26p6_to_dbl(m_cur_face->glyph->advance.y);
return true;
}
break;
case glyph_ren_native_gray8:
m_last_error = FT_Render_Glyph(m_cur_face->glyph, FT_RENDER_MODE_NORMAL);
if(m_last_error == 0)
{
decompose_ft_bitmap_gray8(m_cur_face->glyph->bitmap,
m_cur_face->glyph->bitmap_left,
m_flip_y ? -m_cur_face->glyph->bitmap_top :
m_cur_face->glyph->bitmap_top,
m_flip_y,
m_rasterizer,
m_scanline_aa,
m_scanlines_aa);
m_bounds.x1 = m_scanlines_aa.min_x();
m_bounds.y1 = m_scanlines_aa.min_y();
m_bounds.x2 = m_scanlines_aa.max_x();
m_bounds.y2 = m_scanlines_aa.max_y();
m_data_size = m_scanlines_aa.byte_size();
m_data_type = glyph_data_gray8;
m_advance_x = int26p6_to_dbl(m_cur_face->glyph->advance.x);
m_advance_y = int26p6_to_dbl(m_cur_face->glyph->advance.y);
return true;
}
break;
case glyph_ren_outline:
if(m_last_error == 0)
{
if(m_flag32)
{
m_path32.remove_all();
if(decompose_ft_outline(m_cur_face->glyph->outline,
m_flip_y,
m_affine,
m_path32))
{
rect_d bnd = m_path32.bounding_rect();
m_data_size = m_path32.byte_size();
m_data_type = glyph_data_outline;
m_bounds.x1 = int(floor(bnd.x1));
m_bounds.y1 = int(floor(bnd.y1));
m_bounds.x2 = int(ceil(bnd.x2));
m_bounds.y2 = int(ceil(bnd.y2));
m_advance_x = int26p6_to_dbl(m_cur_face->glyph->advance.x);
m_advance_y = int26p6_to_dbl(m_cur_face->glyph->advance.y);
m_affine.transform(&m_advance_x, &m_advance_y);
return true;
}
}
else
{
m_path16.remove_all();
if(decompose_ft_outline(m_cur_face->glyph->outline,
m_flip_y,
m_affine,
m_path16))
{
rect_d bnd = m_path16.bounding_rect();
m_data_size = m_path16.byte_size();
m_data_type = glyph_data_outline;
m_bounds.x1 = int(floor(bnd.x1));
m_bounds.y1 = int(floor(bnd.y1));
m_bounds.x2 = int(ceil(bnd.x2));
m_bounds.y2 = int(ceil(bnd.y2));
m_advance_x = int26p6_to_dbl(m_cur_face->glyph->advance.x);
m_advance_y = int26p6_to_dbl(m_cur_face->glyph->advance.y);
m_affine.transform(&m_advance_x, &m_advance_y);
return true;
}
}
}
return false;
case glyph_ren_agg_mono:
if(m_last_error == 0)
{
m_rasterizer.reset();
if(m_flag32)
{
m_path32.remove_all();
decompose_ft_outline(m_cur_face->glyph->outline,
m_flip_y,
m_affine,
m_path32);
m_rasterizer.add_path(m_curves32);
}
else
{
m_path16.remove_all();
decompose_ft_outline(m_cur_face->glyph->outline,
m_flip_y,
m_affine,
m_path16);
m_rasterizer.add_path(m_curves16);
}
m_scanlines_bin.prepare(1); // Remove all
render_scanlines(m_rasterizer, m_scanline_bin, m_scanlines_bin);
m_bounds.x1 = m_scanlines_bin.min_x();
m_bounds.y1 = m_scanlines_bin.min_y();
m_bounds.x2 = m_scanlines_bin.max_x();
m_bounds.y2 = m_scanlines_bin.max_y();
m_data_size = m_scanlines_bin.byte_size();
m_data_type = glyph_data_mono;
m_advance_x = int26p6_to_dbl(m_cur_face->glyph->advance.x);
m_advance_y = int26p6_to_dbl(m_cur_face->glyph->advance.y);
m_affine.transform(&m_advance_x, &m_advance_y);
return true;
}
return false;
case glyph_ren_agg_gray8:
if(m_last_error == 0)
{
m_rasterizer.reset();
if(m_flag32)
{
m_path32.remove_all();
decompose_ft_outline(m_cur_face->glyph->outline,
m_flip_y,
m_affine,
m_path32);
m_rasterizer.add_path(m_curves32);
}
else
{
m_path16.remove_all();
decompose_ft_outline(m_cur_face->glyph->outline,
m_flip_y,
m_affine,
m_path16);
m_rasterizer.add_path(m_curves16);
}
m_scanlines_aa.prepare(1); // Remove all
render_scanlines(m_rasterizer, m_scanline_aa, m_scanlines_aa);
m_bounds.x1 = m_scanlines_aa.min_x();
m_bounds.y1 = m_scanlines_aa.min_y();
m_bounds.x2 = m_scanlines_aa.max_x();
m_bounds.y2 = m_scanlines_aa.max_y();
m_data_size = m_scanlines_aa.byte_size();
m_data_type = glyph_data_gray8;
m_advance_x = int26p6_to_dbl(m_cur_face->glyph->advance.x);
m_advance_y = int26p6_to_dbl(m_cur_face->glyph->advance.y);
m_affine.transform(&m_advance_x, &m_advance_y);
return true;
}
return false;
}
}
return false;
}
//------------------------------------------------------------------------
bool font_engine_freetype_base::prepare_glyph(unsigned glyph_code)
{
/* FT_ENCODING_MS_SYMBOL hack inspired from GD's gdft.c: */
/* I do not know the significance of the constant 0xf000. */
/* It was determined by inspection of the character codes */
/* stored in Microsoft font symbol.ttf */
if (m_cur_face->charmap &&
m_cur_face->charmap->encoding == FT_ENCODING_MS_SYMBOL)
glyph_code |= 0xf000;
m_glyph_index = FT_Get_Char_Index(m_cur_face, glyph_code);
m_last_error = FT_Load_Glyph(m_cur_face,
m_glyph_index,
m_hinting ? FT_LOAD_DEFAULT|FT_LOAD_NO_BITMAP : FT_LOAD_NO_HINTING|FT_LOAD_NO_BITMAP);
// m_hinting ? FT_LOAD_FORCE_AUTOHINT : FT_LOAD_NO_HINTING);
if(m_last_error == 0)
{
switch(m_glyph_rendering)
{
case glyph_ren_native_mono:
m_last_error = FT_Render_Glyph(m_cur_face->glyph, FT_RENDER_MODE_MONO);
if(m_last_error == 0)
{
decompose_ft_bitmap_mono(m_cur_face->glyph->bitmap,
m_cur_face->glyph->bitmap_left,
m_flip_y ? -m_cur_face->glyph->bitmap_top :
m_cur_face->glyph->bitmap_top,
m_flip_y,
m_scanline_bin,
m_scanlines_bin);
m_bounds.x1 = m_scanlines_bin.min_x();
m_bounds.y1 = m_scanlines_bin.min_y();
m_bounds.x2 = m_scanlines_bin.max_x() + 1;
m_bounds.y2 = m_scanlines_bin.max_y() + 1;
m_data_size = m_scanlines_bin.byte_size();
m_data_type = glyph_data_mono;
m_advance_x = int26p6_to_dbl(m_cur_face->glyph->advance.x);
m_advance_y = int26p6_to_dbl(m_cur_face->glyph->advance.y);
return true;
}
break;
case glyph_ren_native_gray8:
m_last_error = FT_Render_Glyph(m_cur_face->glyph, FT_RENDER_MODE_NORMAL);
if(m_last_error == 0)
{
decompose_ft_bitmap_gray8(m_cur_face->glyph->bitmap,
m_cur_face->glyph->bitmap_left,
m_flip_y ? -m_cur_face->glyph->bitmap_top :
m_cur_face->glyph->bitmap_top,
m_flip_y,
m_rasterizer,
m_scanline_aa,
m_scanlines_aa);
m_bounds.x1 = m_scanlines_aa.min_x();
m_bounds.y1 = m_scanlines_aa.min_y();
m_bounds.x2 = m_scanlines_aa.max_x() + 1;
m_bounds.y2 = m_scanlines_aa.max_y() + 1;
m_data_size = m_scanlines_aa.byte_size();
m_data_type = glyph_data_gray8;
m_advance_x = int26p6_to_dbl(m_cur_face->glyph->advance.x);
m_advance_y = int26p6_to_dbl(m_cur_face->glyph->advance.y);
return true;
}
break;
case glyph_ren_outline:
if(m_last_error == 0)
{
if(m_flag32)
{
m_path32.remove_all();
if(decompose_ft_outline(m_cur_face->glyph->outline,
m_flip_y,
m_affine,
m_path32))
{
rect_d bnd = m_path32.bounding_rect();
m_data_size = m_path32.byte_size();
m_data_type = glyph_data_outline;
m_bounds.x1 = int(floor(bnd.x1));
m_bounds.y1 = int(floor(bnd.y1));
m_bounds.x2 = int(ceil(bnd.x2));
m_bounds.y2 = int(ceil(bnd.y2));
m_advance_x = int26p6_to_dbl(m_cur_face->glyph->advance.x);
m_advance_y = int26p6_to_dbl(m_cur_face->glyph->advance.y);
m_affine.transform(&m_advance_x, &m_advance_y);
return true;
}
}
else
{
m_path16.remove_all();
if(decompose_ft_outline(m_cur_face->glyph->outline,
m_flip_y,
m_affine,
m_path16))
{
rect_d bnd = m_path16.bounding_rect();
m_data_size = m_path16.byte_size();
m_data_type = glyph_data_outline;
m_bounds.x1 = int(floor(bnd.x1));
m_bounds.y1 = int(floor(bnd.y1));
m_bounds.x2 = int(ceil(bnd.x2));
m_bounds.y2 = int(ceil(bnd.y2));
m_advance_x = int26p6_to_dbl(m_cur_face->glyph->advance.x);
m_advance_y = int26p6_to_dbl(m_cur_face->glyph->advance.y);
m_affine.transform(&m_advance_x, &m_advance_y);
return true;
}
}
}
return false;
case glyph_ren_agg_mono:
if(m_last_error == 0)
{
m_rasterizer.reset();
if(m_flag32)
{
m_path32.remove_all();
decompose_ft_outline(m_cur_face->glyph->outline,
m_flip_y,
m_affine,
m_path32);
m_rasterizer.add_path(m_curves32);
}
else
{
m_path16.remove_all();
decompose_ft_outline(m_cur_face->glyph->outline,
m_flip_y,
m_affine,
m_path16);
m_rasterizer.add_path(m_curves16);
}
m_scanlines_bin.prepare(); // Remove all
render_scanlines(m_rasterizer, m_scanline_bin, m_scanlines_bin);
m_bounds.x1 = m_scanlines_bin.min_x();
m_bounds.y1 = m_scanlines_bin.min_y();
m_bounds.x2 = m_scanlines_bin.max_x() + 1;
m_bounds.y2 = m_scanlines_bin.max_y() + 1;
m_data_size = m_scanlines_bin.byte_size();
m_data_type = glyph_data_mono;
m_advance_x = int26p6_to_dbl(m_cur_face->glyph->advance.x);
m_advance_y = int26p6_to_dbl(m_cur_face->glyph->advance.y);
m_affine.transform(&m_advance_x, &m_advance_y);
return true;
}
return false;
case glyph_ren_agg_gray8:
if(m_last_error == 0)
{
m_rasterizer.reset();
if(m_flag32)
{
m_path32.remove_all();
decompose_ft_outline(m_cur_face->glyph->outline,
m_flip_y,
m_affine,
m_path32);
m_rasterizer.add_path(m_curves32);
}
else
{
m_path16.remove_all();
decompose_ft_outline(m_cur_face->glyph->outline,
m_flip_y,
m_affine,
m_path16);
m_rasterizer.add_path(m_curves16);
}
m_scanlines_aa.prepare(); // Remove all
render_scanlines(m_rasterizer, m_scanline_aa, m_scanlines_aa);
m_bounds.x1 = m_scanlines_aa.min_x();
m_bounds.y1 = m_scanlines_aa.min_y();
m_bounds.x2 = m_scanlines_aa.max_x() + 1;
m_bounds.y2 = m_scanlines_aa.max_y() + 1;
m_data_size = m_scanlines_aa.byte_size();
m_data_type = glyph_data_gray8;
m_advance_x = int26p6_to_dbl(m_cur_face->glyph->advance.x);
m_advance_y = int26p6_to_dbl(m_cur_face->glyph->advance.y);
m_affine.transform(&m_advance_x, &m_advance_y);
return true;
}
return false;
}
}
return false;
}
