Imported Upstream version 16.6.0~ds0

1 files changed, 160 insertions, 0 deletions

diff --git a/src/hdpisupport.cpp b/src/hdpisupport.cpp
new file mode 100644
index 0000000..68bbf2e
--- /dev/null
+++ b/src/hdpisupport.cpp
@@ -0,0 +1,160 @@
+/*  smplayer, GUI front-end for mplayer.
+    Copyright (C) 2006-2016 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>
+
+#if QT_VERSION >= 0x050000
+#include <QStandardPaths>
+#else
+#include <QDesktopServices>
+#endif
+
+//#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;
+	if (!config_path.isEmpty()) {
+		setConfigPath(config_path);
+	} else {
+		#if QT_VERSION >= 0x050000
+		setConfigPath(QStandardPaths::writableLocation(QStandardPaths::ConfigLocation));
+		#else
+		setConfigPath(QDesktopServices::storageLocation(QDesktopServices::TempLocation));
+		#endif
+	}
+#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()) {
+		ini_file = config_path + "/smplayerhdpi.ini";
+		#ifdef DEBUG
+		qDebug() << "HDPISupport::setConfigPath: ini file:" << ini_file;
+		#endif
+		set = new QSettings(ini_file, 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
+	}
+}