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/* smplayer, GUI front-end for mplayer.
Copyright (C) 2006-2018 Ricardo Villalba <rvm@users.sourceforge.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "hdpisupport.h"
#include <QSettings>
#include <QApplication>
//#define DEBUG
#ifdef DEBUG
#include <QDebug>
#endif
HDPISupport * HDPISupport::instance_obj = 0;
HDPISupport * HDPISupport::instance() {
if (instance_obj == 0) {
instance_obj = new HDPISupport();
}
return instance_obj;
}
HDPISupport::HDPISupport(const QString & config_path)
#ifdef Q_OS_WIN
: enabled(true)
#else
: enabled(false)
#endif
, auto_scale(true)
, scale_factor(1)
, pixel_ratio(2)
{
instance_obj = this;
#ifdef HDPI_STORE_DATA
set = 0;
setConfigPath(config_path);
#else
apply();
#endif
}
HDPISupport::~HDPISupport() {
#ifdef HDPI_STORE_DATA
if (set) {
save();
delete set;
}
#endif
instance_obj = 0;
}
#ifdef HDPI_STORE_DATA
void HDPISupport::setConfigPath(const QString & config_path) {
#ifdef DEBUG
qDebug() << "HDPISupport::setConfigPath:" << config_path;
#endif
if (set) {
delete set;
set = 0;
}
if (!config_path.isEmpty()) {
QString inifile = config_path + "/hdpi.ini";
#ifdef DEBUG
qDebug() << "HDPISupport::setConfigPath: ini file:" << inifile;
#endif
set = new QSettings(inifile, QSettings::IniFormat);
load();
}
apply();
}
bool HDPISupport::load() {
#ifdef DEBUG
qDebug("HDPISupport::load");
#endif
if (!set) return false;
set->beginGroup("hdpisupport");
enabled = set->value("enabled", enabled).toBool();
auto_scale = set->value("auto_scale", auto_scale).toBool();
scale_factor = set->value("scale_factor", scale_factor).toDouble();
pixel_ratio = set->value("pixel_ratio", pixel_ratio).toInt();
set->endGroup();
return true;
}
bool HDPISupport::save() {
#ifdef DEBUG
qDebug("HDPISupport::save");
#endif
if (!set) return false;
set->beginGroup("hdpisupport");
set->setValue("enabled", enabled);
set->setValue("auto_scale", auto_scale);
set->setValue("scale_factor", scale_factor);
set->setValue("pixel_ratio", pixel_ratio);
set->endGroup();
return true;
}
#endif
void HDPISupport::apply() {
#ifdef DEBUG
qDebug("HDPISupport::apply");
#endif
if (enabled) {
#if QT_VERSION >= 0x050400 && QT_VERSION < 0x050600
if (qgetenv("QT_DEVICE_PIXEL_RATIO").isEmpty()) {
qputenv("QT_DEVICE_PIXEL_RATIO", QByteArray("auto"));
}
if (!auto_scale) {
qputenv("QT_DEVICE_PIXEL_RATIO", QByteArray::number(pixel_ratio));
}
#elif QT_VERSION >= 0x050600
QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
if (!auto_scale) {
qputenv("QT_SCALE_FACTOR", QByteArray::number(scale_factor));
}
#endif
}
}
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