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236 lines
6.9 KiB
236 lines
6.9 KiB
9 years ago
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/*
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* Copyright (C) 2014 Hong Jen Yee (PCMan) <pcman.tw@gmail.com>
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* LXQt project: http://lxde.org/
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include "fontconfigfile.h"
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#include <QTextStream>
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#include <QByteArray>
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#include <QFile>
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#include <QDir>
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#include <QDesktopServices>
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#include <QStringBuilder>
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#include <QDomDocument>
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#include <QTimer>
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#include <QDebug>
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#include <QStandardPaths>
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FontConfigFile::FontConfigFile(QObject* parent):
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QObject(parent),
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mAntialias(true),
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mHinting(true),
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mSubpixel("rgb"),
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mHintStyle("hintslight"),
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mDpi(96),
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mAutohint(false),
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mSaveTimer(NULL)
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{
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mDirPath = QString::fromLocal8Bit(qgetenv("XDG_CONFIG_HOME"));
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QString homeDir = QStandardPaths::writableLocation(QStandardPaths::HomeLocation);
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if(mDirPath.isEmpty())
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mDirPath = homeDir % "/.config";
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mDirPath += "/fontconfig";
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mFilePath = mDirPath + "/fonts.conf";
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load();
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}
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FontConfigFile::~FontConfigFile()
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{
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if(mSaveTimer) // has pending save request
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{
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delete mSaveTimer;
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mSaveTimer = NULL;
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save();
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}
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}
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void FontConfigFile::setAntialias(bool value)
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{
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mAntialias = value;
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queueSave();
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}
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void FontConfigFile::setSubpixel(QByteArray value)
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{
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mSubpixel = value;
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queueSave();
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}
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void FontConfigFile::setHinting(bool value)
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{
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mHinting = value;
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queueSave();
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}
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void FontConfigFile::setHintStyle(QByteArray value)
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{
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mHintStyle = value;
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queueSave();
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}
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void FontConfigFile::setDpi(int value)
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{
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mDpi = value;
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queueSave();
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}
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void FontConfigFile::setAutohint(bool value)
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{
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mAutohint = value;
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queueSave();
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}
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void FontConfigFile::load()
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{
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QFile file(mFilePath);
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if(file.open(QIODevice::ReadOnly))
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{
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QByteArray buffer = file.readAll();
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file.close();
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if(buffer.contains("lxqt-config-appearance")) // the config file is created by us
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{
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// doing full xml parsing is over-kill. let's use some simpler brute-force methods.
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QDomDocument doc;
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doc.setContent(&file);
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file.close();
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QDomElement docElem = doc.documentElement();
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QDomNodeList editNodes = docElem.elementsByTagName("edit");
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for(int i = 0; i < editNodes.count(); ++i)
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{
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QDomElement editElem = editNodes.at(i).toElement();
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QByteArray name = editElem.attribute("name").toLatin1();
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if(name == "antialias")
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{
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QString value = editElem.firstChildElement("bool").text();
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mAntialias = value[0] == 't' ? true : false;
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}
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else if(name == "rgba")
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{
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QString value = editElem.firstChildElement("const").text();
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mSubpixel = value.toLatin1();
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}
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else if(name == "hinting")
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{
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QString value = editElem.firstChildElement("bool").text();
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mHinting = value[0] == 't' ? true : false;
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}
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else if(name == "hintstyle")
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{
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QString value = editElem.firstChildElement("const").text();
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mHintStyle = value.toLatin1();
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}
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else if(name == "dpi")
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{
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QString value = editElem.firstChildElement("double").text();
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mDpi = value.toInt();
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}
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else if(name == "autohint")
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{
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QString value = editElem.firstChildElement("bool").text();
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mAutohint = value[0] == 't' ? true : false;
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}
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}
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}
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else // the config file is created by others => make a backup and write our config
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{
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QFile backup(mFilePath + ".bak");
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if(backup.open(QIODevice::WriteOnly))
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{
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backup.write(buffer);
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backup.close();
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}
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queueSave(); // overwrite with our file
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}
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}
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}
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void FontConfigFile::save()
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{
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if(mSaveTimer)
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{
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mSaveTimer->deleteLater();
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mSaveTimer = NULL;
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}
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QFile file(mFilePath);
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QDir().mkdir(mDirPath);
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// References: https://wiki.archlinux.org/index.php/Font_Configuration
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if(file.open(QIODevice::WriteOnly))
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{
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QTextStream s(&file);
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s <<
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"<?xml version=\"1.0\"?>\n"
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"<!DOCTYPE fontconfig SYSTEM \"fonts.dtd\">\n"
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"<!-- created by lxqt-config-appearance (DO NOT EDIT!) -->\n"
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"<fontconfig>\n"
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" <match target=\"font\">\n"
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" <edit name=\"antialias\" mode=\"assign\">\n"
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" <bool>" << (mAntialias ? "true" : "false") << "</bool>\n"
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" </edit>\n"
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" </match>\n"
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" <match target=\"font\">\n"
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" <edit name=\"rgba\" mode=\"assign\">\n"
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" <const>" << mSubpixel << "</const>\n"
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" </edit>\n"
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" </match>\n"
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" <match target=\"font\">\n"
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" <edit name=\"lcdfilter\" mode=\"assign\">\n"
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" <const>lcddefault</const>\n"
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" </edit>\n"
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" </match>\n"
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" <match target=\"font\">\n"
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" <edit name=\"hinting\" mode=\"assign\">\n"
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" <bool>" << (mHinting ? "true" : "false") << "</bool>\n"
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" </edit>\n"
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" </match>\n"
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" <match target=\"font\">\n"
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" <edit name=\"hintstyle\" mode=\"assign\">\n"
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" <const>" << mHintStyle << "</const>\n"
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" </edit>\n"
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" </match>\n"
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" <match target=\"font\">\n"
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" <edit name=\"autohint\" mode=\"assign\">\n"
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" <bool>" << (mAutohint ? "true" : "false") << "</bool>\n"
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" </edit>\n"
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" </match>\n"
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" <match target=\"pattern\">\n"
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" <edit name=\"dpi\" mode=\"assign\">\n"
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" <double>" << mDpi << "</double>\n"
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" </edit>\n"
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" </match>\n"
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"</fontconfig>";
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s.flush();
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file.close();
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}
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}
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void FontConfigFile::queueSave()
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{
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if(mSaveTimer)
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mSaveTimer->start(1500);
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else
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{
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mSaveTimer = new QTimer();
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mSaveTimer->setSingleShot(true);
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connect(mSaveTimer, SIGNAL(timeout()), this, SLOT(save()));
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mSaveTimer->start(1500);
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}
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}
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