diff options
Diffstat (limited to 'ksvg/impl/libs/libtext2path/src/Font.cpp')
| -rw-r--r-- | ksvg/impl/libs/libtext2path/src/Font.cpp | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/ksvg/impl/libs/libtext2path/src/Font.cpp b/ksvg/impl/libs/libtext2path/src/Font.cpp new file mode 100644 index 00000000..1d6f7005 --- /dev/null +++ b/ksvg/impl/libs/libtext2path/src/Font.cpp @@ -0,0 +1,252 @@ +/* + Copyright (C) 2003 Nikolas Zimmermann <wildfox@kde.org> + This file is part of the KDE project + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + aint with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. +*/ + +#include <math.h> +#include <iostream> +#include <fontconfig/fontconfig.h> + +#include "Font.h" +#include "Tools.h" +#include "Converter.h" + +// Macros +#define FT_TRUNC(x) ((x) >> 6) +#define FT_TOFLOAT(x) ((x) * (1.0 / 64.0)) +#define FT_FROMFLOAT(x) ((int) floor ((x) * 64.0 + 0.5)) + +using namespace T2P; + +FontVisualParams::FontVisualParams() +{ + m_size = 0.0; + m_slant = 0; + m_weight = 0; +} + +FontVisualParams::FontVisualParams(const FontVisualParams &other) +{ + (*this) = other; +} + +FontVisualParams::~FontVisualParams() +{ +} + +FontVisualParams &FontVisualParams::operator=(const FontVisualParams &other) +{ + m_size = other.m_size; + m_slant = other.m_slant; + m_weight = other.m_weight; + m_fontList = other.m_fontList; + + return *this; +} + +void FontVisualParams::setWeight(int weight) +{ + m_weight = weight; +} + +int FontVisualParams::weight() const +{ + return m_weight; +} + +void FontVisualParams::setSlant(int slant) +{ + m_slant = slant; +} + +int FontVisualParams::slant() const +{ + return m_slant; +} + +void FontVisualParams::setSize(double size) +{ + m_size = size; +} + +double FontVisualParams::size() const +{ + return m_size; +} + +std::list<std::string> &FontVisualParams::fontList() +{ + return m_fontList; +} + +// ##### + +Font::Font(Converter *context) : m_context(context) +{ + m_ready = false; + + m_fontFace = 0; + m_fontParams = 0; +} + +Font::~Font() +{ + // Release font face + if(m_ready && m_fontFace) + { + // FIXME: Debug that! + //std::cout << "CALLING DONE FACE " << m_fontFace << std::endl; + FT_Done_Face(m_fontFace); + } + + delete m_fontParams; +} + +std::string Font::buildRequest(const FontVisualParams *fontParams, int &id) +{ + // Use FontConfig to locate & select fonts and use + // FreeType2 to open them + FcPattern *pattern; + std::string fileName; + + pattern = FcPatternBuild(0, + FC_WEIGHT, FcTypeInteger, fontParams->weight(), + FC_SLANT, FcTypeInteger, fontParams->slant(), + FC_SIZE, FcTypeDouble, fontParams->size(), + NULL); + + // Add multiple font names + std::list<std::string> &fontList = const_cast<FontVisualParams *>(fontParams)->fontList(); + + for(std::list<std::string>::const_iterator it = fontList.begin(); it != fontList.end(); ++it) + { + std::string string = *it; + + if(!string.empty()) + FcPatternAddString(pattern, FC_FAMILY, reinterpret_cast<const FcChar8 *>(string.c_str())); + } + + // Always load vertical layout + FcPatternAddBool(pattern, FC_VERTICAL_LAYOUT, true); + + // Disable hinting + FcPatternAddBool(pattern, FC_HINTING, false); + + // Perform the default font pattern modification operations. + FcDefaultSubstitute(pattern); + FcConfigSubstitute(FcConfigGetCurrent(), pattern, FcMatchPattern); + + // Match the pattern! + FcResult result; + FcPattern *match = FcFontMatch(0, pattern, &result); + + // Destroy pattern + FcPatternDestroy(pattern); + + // Get index & filename + FcChar8 *temp; + + if(match) + { + FcPattern *pattern = FcPatternDuplicate(match); + + // Get index & filename + if(FcPatternGetString(pattern, FC_FILE, 0, &temp) != FcResultMatch || + FcPatternGetInteger(pattern, FC_INDEX, 0, &id) != FcResultMatch) + { + std::cout << "Font::buildRequest(), could not load font file for requested font \"" << Tools::joinList('|', fontList) << "\"" << std::endl; + return fileName; + } + + fileName = reinterpret_cast<const char *>(temp); + + // Kill pattern + FcPatternDestroy(pattern); + } + + // Kill pattern + FcPatternDestroy(match); + + return fileName; +} + +bool Font::load(const FontVisualParams *fontParams) +{ + // Build FontConfig request pattern + int id = -1; + std::string filename = Font::buildRequest(fontParams, id); + + // Load font directly using FreeType2 + std::cout << "Font::load(), loading " << filename << " for requested font \"" << Tools::joinList('|', const_cast<FontVisualParams *>(fontParams)->fontList()) << "\"" << std::endl; + + FT_Error error = FT_New_Face(m_context->library(), filename.c_str(), id, &m_fontFace); + if(error) + { + std::cout << "Font::load(), could not load font. Aborting!" << std::endl; + return false; + } + if(!FT_IS_SCALABLE(m_fontFace)) + { + std::cout << "Font::load(), font does not contain outlines. Aborting!" << std::endl; + FT_Done_Face(m_fontFace); + m_fontFace = 0; + return false; + } + + // Choose unicode charmap + for(int charmap = 0; charmap < m_fontFace->num_charmaps; charmap++) + { + if(m_fontFace->charmaps[charmap]->encoding == ft_encoding_unicode) + { + FT_Error error = FT_Set_Charmap(m_fontFace, m_fontFace->charmaps[charmap]); + + if(error) + { + std::cout << "Font::load(), unable to select unicode charmap. Aborting!" << std::endl; + + FT_Done_Face(m_fontFace); + m_fontFace = 0; + + return false; + } + } + } + + m_fontParams = fontParams; + m_fontFile = filename; + m_ready = true; + + return true; +} + +FT_Face &Font::fontFace() +{ + return m_fontFace; +} + +std::string Font::fontFile() const +{ + return m_fontFile; +} + +const FontVisualParams *Font::fontParams() const +{ + return m_fontParams; +} + +// vim:ts=4:noet |