bool CGUIFontTTFBase::Load(const CStdString& strFilename, float height, float aspect, float lineSpacing, bool border)
{
// we now know that this object is unique - only the GUIFont objects are non-unique, so no need
// for reference tracking these fonts
m_face = g_freeTypeLibrary.GetFont(strFilename, height, aspect);
if (!m_face)
return false;
// grab the maximum cell height and width
unsigned int m_cellWidth = m_face->bbox.xMax - m_face->bbox.xMin;
m_cellHeight = std::max<unsigned int>(m_face->bbox.yMax - m_face->bbox.yMin, m_face->ascender - m_face->descender);
m_cellBaseLine = std::max<unsigned int>(m_face->bbox.yMax, m_face->ascender);
if (border)
{
m_stroker = g_freeTypeLibrary.GetStroker();
FT_Pos strength = FT_MulFix( m_face->units_per_EM, m_face->size->metrics.y_scale) / 12;
if (strength < 128)
strength = 128;
m_cellHeight += 2*strength;
if (m_stroker)
FT_Stroker_Set(m_stroker, strength, FT_STROKER_LINECAP_ROUND, FT_STROKER_LINEJOIN_ROUND, 0);
}
unsigned int ydpi = g_freeTypeLibrary.GetDPI();
unsigned int xdpi = (unsigned int)MathUtils::round_int(ydpi * aspect);
m_cellWidth *= (unsigned int)(height * xdpi);
m_cellWidth /= (72 * m_face->units_per_EM);
m_cellHeight *= (unsigned int)(height * ydpi);
m_cellHeight /= (72 * m_face->units_per_EM);
m_cellBaseLine *= (unsigned int)(height * ydpi);
m_cellBaseLine /= (72 * m_face->units_per_EM);
// increment for good measure to give space in our texture
m_cellWidth++;
m_cellHeight+=2;
m_cellBaseLine++;
// CLog::Log(LOGDEBUG, "%s Scaled size of font %s (%f): width = %i, height = %i, lineheight = %li",
// __FUNCTION__, strFilename.c_str(), height, m_cellWidth, m_cellHeight, m_face->size->metrics.height / 64);
m_height = height;
delete(m_texture);
m_texture = NULL;
delete[] m_char;
m_char = NULL;
m_maxChars = 0;
m_numChars = 0;
m_strFilename = strFilename;
m_textureHeight = 0;
m_textureWidth = ((m_cellHeight * CHARS_PER_TEXTURE_LINE) & ~63) + 64;
m_textureWidth = CBaseTexture::PadPow2(m_textureWidth);
if (m_textureWidth > g_Windowing.GetMaxTextureSize())
m_textureWidth = g_Windowing.GetMaxTextureSize();
// set the posX and posY so that our texture will be created on first character write.
m_posX = m_textureWidth;
m_posY = -(int)m_cellHeight;
// cache the ellipses width
Character *ellipse = GetCharacter(L'.');
if (ellipse) m_ellipsesWidth = ellipse->advance;
return true;
}
