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lxqt-config-packaging/lxqt-config-appearance/fontsconfig.cpp

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/* BEGIN_COMMON_COPYRIGHT_HEADER
* (c)LGPL2+
*
* LXQt - a lightweight, Qt based, desktop toolset
* http://lxde.org/
*
* Copyright: 2014 LXQt team
* Authors:
* Hong Jen Yee (PCMan) <pcman.tw@gmail.com>
*
* This program or library is free software; you can redistribute it
* and/or modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 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
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* END_COMMON_COPYRIGHT_HEADER */
#include "fontsconfig.h"
#include "ui_fontsconfig.h"
#include <QTreeWidget>
#include <QDebug>
#include <QSettings>
#include <QFont>
#include <QFile>
#include <QDir>
#include <QDesktopServices>
#include <QTextStream>
#include <QStringBuilder>
#include <QDomDocument>
#ifdef Q_WS_X11
extern void qt_x11_apply_settings_in_all_apps();
#endif
static const char* subpixelNames[] = {"none", "rgb", "bgr", "vrgb", "vbgr"};
static const char* hintStyleNames[] = {"hintnone", "hintslight", "hintmedium", "hintfull"};
FontsConfig::FontsConfig(LxQt::Settings* settings, QSettings* qtSettings, QWidget* parent) :
QWidget(parent),
ui(new Ui::FontsConfig),
mSettings(settings),
mQtSettings(qtSettings),
mFontConfigFile()
{
ui->setupUi(this);
initControls();
connect(ui->fontName, SIGNAL(currentFontChanged(QFont)), SLOT(updateQtFont()));
connect(ui->fontStyle, SIGNAL(currentIndexChanged(int)), SLOT(updateQtFont()));
connect(ui->fontSize, SIGNAL(valueChanged(int)), SLOT(updateQtFont()));
connect(ui->antialias, SIGNAL(toggled(bool)), SLOT(antialiasToggled(bool)));
connect(ui->subpixel, SIGNAL(currentIndexChanged(int)), SLOT(subpixelChanged(int)));
connect(ui->hinting, SIGNAL(toggled(bool)), SLOT(hintingToggled(bool)));
connect(ui->hintStyle, SIGNAL(currentIndexChanged(int)), SLOT(hintStyleChanged(int)));
connect(ui->dpi, SIGNAL(valueChanged(int)), SLOT(dpiChanged(int)));
connect(ui->autohint, SIGNAL(toggled(bool)), SLOT(autohintToggled(bool)));
}
FontsConfig::~FontsConfig()
{
delete ui;
}
void FontsConfig::initControls()
{
// read Qt style settings from Qt Trolltech.conf config
mQtSettings->beginGroup(QLatin1String("Qt"));
QString fontName = mQtSettings->value("font").toString();
QFont font;
font.fromString(fontName);
ui->fontName->setCurrentFont(font);
ui->fontSize->setValue(font.pointSize());
int fontStyle = 0;
if(font.bold())
fontStyle = font.italic() ? 3 : 1;
else if(font.italic())
fontStyle = 2;
ui->fontStyle->setCurrentIndex(fontStyle);
mQtSettings->endGroup();
// load fontconfig config
ui->antialias->setChecked(mFontConfigFile.antialias());
ui->autohint->setChecked(mFontConfigFile.autohint());
QByteArray subpixelStr = mFontConfigFile.subpixel();
int subpixel;
for(subpixel = 0; subpixel < 5; ++subpixel)
{
if(subpixelStr == subpixelNames[subpixel])
break;
}
if(subpixel < 5)
ui->subpixel->setCurrentIndex(subpixel);
ui->hinting->setChecked(mFontConfigFile.hinting());
QByteArray hintStyleStr = mFontConfigFile.hintStyle();
int hintStyle;
for(hintStyle = 0; hintStyle < 4; ++hintStyle)
{
if(hintStyleStr == hintStyleNames[hintStyle])
break;
}
if(hintStyle < 4)
ui->hintStyle->setCurrentIndex(hintStyle);
int dpi = mFontConfigFile.dpi();
ui->dpi->setValue(dpi);
update();
}
void FontsConfig::antialiasToggled(bool toggled)
{
mFontConfigFile.setAntialias(toggled);
}
void FontsConfig::dpiChanged(int value)
{
mFontConfigFile.setDpi(value);
}
void FontsConfig::hintingToggled(bool toggled)
{
mFontConfigFile.setHinting(toggled);
}
void FontsConfig::subpixelChanged(int index)
{
mFontConfigFile.setSubpixel(subpixelNames[index]);
}
void FontsConfig::hintStyleChanged(int index)
{
mFontConfigFile.setHintStyle(hintStyleNames[index]);
}
void FontsConfig::autohintToggled(bool toggled)
{
mFontConfigFile.setAutohint(toggled);
}
void FontsConfig::updateQtFont()
{
// FIXME: the change does not apply to some currently running Qt programs.
// FIXME: does not work with KDE apps
// TODO: also write the config values to GTK+ config files (gtk-2.0.rc and gtk3/settings.ini)
// FIXME: the selected font does not apply to our own application. Why?
QFont font = ui->fontName->currentFont();
int size = ui->fontSize->value();
bool bold = false;
bool italic = false;
switch(ui->fontStyle->currentIndex())
{
case 1:
bold = true;
break;
case 2:
italic = true;
break;
case 3:
bold = italic = true;
}
font.setPointSize(size);
font.setBold(bold);
font.setItalic(italic);
mQtSettings->beginGroup(QLatin1String("Qt"));
mQtSettings->setValue("font", font.toString());
mQtSettings->endGroup();
mQtSettings->sync();
#ifdef Q_WS_X11
qt_x11_apply_settings_in_all_apps();
#endif
update();
}