Added: High DPI support for the Configuration Editor. Icons and proportions should look better now when DPI scaling is used.

Improved: Updated Qt to version 5.7
Fixed: The GUI for the Channel command was showing the wrong channels as selected when channel numbers were used instead of names.

Editor/CustomStyle.cpp

@@ -0,0 +1,39 @@
+/*
+    This file is part of EqualizerAPO, a system-wide equalizer.
+    Copyright (C) 2016  Jonas Thedering
+
+    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.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+#include "CustomStyle.h"
+#include "Editor/helpers/DPIHelper.h"
+
+CustomStyle::CustomStyle(QStyle* style)
+    : QProxyStyle(style)
+{
+}
+
+int CustomStyle::pixelMetric(QStyle::PixelMetric metric, const QStyleOption* option, const QWidget* widget) const
+{
+	switch (metric)
+	{
+	case PM_ToolBarIconSize:
+	case PM_TabBarIconSize:
+		return DPIHelper::scale(16);
+	case PM_DockWidgetTitleBarButtonMargin:
+		return DPIHelper::scale(baseStyle()->pixelMetric(metric, option, widget));
+	default:
+		return baseStyle()->pixelMetric(metric, option, widget);
+	}
+}

Editor/CustomStyle.h

@@ -0,0 +1,32 @@
+/*
+	This file is part of EqualizerAPO, a system-wide equalizer.
+	Copyright (C) 2016  Jonas Thedering
+
+	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.,
+	51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#pragma once
+
+#include <QProxyStyle>
+
+class CustomStyle : public QProxyStyle
+{
+    Q_OBJECT
+
+public:
+    CustomStyle(QStyle* style);
+
+    int pixelMetric(PixelMetric metric, const QStyleOption* option, const QWidget* widget) const override;
+};

Editor/Editor.pro

@@ -112,7 +112,9 @@ SOURCES += main.cpp\
 	../parser/StringOperators.cpp \
 	AnalysisThread.cpp \
 	widgets/ExponentialSpinBox.cpp \
-	FilterTableMimeData.cpp
+	FilterTableMimeData.cpp \
+	helpers/DPIHelper.cpp \
+	CustomStyle.cpp
 
 HEADERS  += \
 	../helpers/LogHelper.h \
@@ -213,7 +215,9 @@ HEADERS  += \
 	../parser/StringOperators.h \
 	AnalysisThread.h \
 	widgets/ExponentialSpinBox.h \
-	FilterTableMimeData.h
+	FilterTableMimeData.h \
+	helpers/DPIHelper.h \
+	CustomStyle.h
 
 FORMS    += \
 	guis/PreampFilterGUI.ui \

Editor/Editor.qrc

@@ -1,27 +1,27 @@
 <RCC>
     <qresource prefix="/">
-        <file>icons/arrow_right.png</file>
-        <file>icons/16x16/document-open.png</file>
-        <file>icons/16x16/document-new.png</file>
-        <file>icons/16x16/document-save-as.png</file>
-        <file>icons/16x16/document-save.png</file>
-        <file>icons/16x16/edit-copy.png</file>
-        <file>icons/16x16/edit-cut.png</file>
-        <file>icons/16x16/edit-delete.png</file>
-        <file>icons/16x16/edit-paste.png</file>
-        <file>icons/16x16/accessories-text-editor.png</file>
-        <file>icons/16x16/list-add-green.png</file>
-        <file>icons/16x16/list-remove-red.png</file>
-        <file>icons/invert_response.png</file>
-        <file>icons/normalize_response.png</file>
-        <file>icons/power_off.png</file>
-        <file>icons/power_on.png</file>
-        <file>icons/16x16/applications-graphics-rotated.png</file>
-        <file>icons/16x16/format-justify-fill-rotated.png</file>
         <file>translations/Editor_de.qm</file>
         <file>translations/qtbase_de.qm</file>
-        <file>icons/16x16/go-up.png</file>
+        <file>icons/document-open.ico</file>
-        <file>icons/reset_response.png</file>
+        <file>icons/document-save.ico</file>
-        <file>icons/resize_corner.png</file>
+        <file>icons/accessories-text-editor.ico</file>
+        <file>icons/applications-graphics-rotated.ico</file>
+        <file>icons/document-new.ico</file>
+        <file>icons/document-save-as.ico</file>
+        <file>icons/edit-copy.ico</file>
+        <file>icons/edit-cut.ico</file>
+        <file>icons/edit-delete.ico</file>
+        <file>icons/edit-paste.ico</file>
+        <file>icons/format-justify-fill-rotated.ico</file>
+        <file>icons/go-up.ico</file>
+        <file>icons/list-add-green.ico</file>
+        <file>icons/list-remove-red.ico</file>
+        <file>icons/arrow_right.ico</file>
+        <file>icons/power_off.ico</file>
+        <file>icons/power_on.ico</file>
+        <file>icons/invert_response.ico</file>
+        <file>icons/normalize_response.ico</file>
+        <file>icons/reset_response.ico</file>
+        <file>icons/resize_corner.ico</file>
     </qresource>
 </RCC>

Editor/FilterTable.cpp

@@ -48,6 +48,7 @@
 #include "guis/IncludeFilterGUIFactory.h"
 #include "guis/GraphicEQFilterGUIFactory.h"
 #include "guis/ConvolutionFilterGUIFactory.h"
+#include "Editor/helpers/DPIHelper.h"
 #include "helpers/StringHelper.h"
 #include "helpers/LogHelper.h"
 #include "helpers/ChannelHelper.h"
@@ -61,9 +62,9 @@ FilterTable::FilterTable(MainWindow* mainWindow, QWidget* parent)
 {
 	gridLayout = new QGridLayout(this);
 
-	QPixmap pixmap(QStringLiteral(":/icons/arrow_right.png"));
+	QIcon icon(QStringLiteral(":/icons/arrow_right.ico"));
 	insertArrow = new QLabel(this);
-	insertArrow->setPixmap(pixmap);
+	insertArrow->setPixmap(icon.pixmap(DPIHelper::scale(QSize(24, 15))));
 	insertArrow->setVisible(false);
 
 	factories.append(new ExpressionFilterGUIFactory);
@@ -195,13 +196,13 @@ void FilterTable::updateGuis()
 	propagateChannels();
 
 	QToolBar* toolBar = new QToolBar;
-	toolBar->setIconSize(QSize(16, 16));
+	toolBar->setIconSize(DPIHelper::scale(QSize(16, 16)));
 
 	QWidget* spacer = new QWidget;
-	spacer->setFixedWidth(25);
+	spacer->setFixedWidth(DPIHelper::scale(25));
 	toolBar->addWidget(spacer);
 
-	QAction* addAction = new QAction(QIcon(":/icons/16x16/list-add-green.png"), tr("Add filter"), toolBar);
+	QAction* addAction = new QAction(QIcon(":/icons/list-add-green.ico"), tr("Add filter"), toolBar);
 	addAction->setCheckable(true);
 	connect(addAction, SIGNAL(triggered()), this, SLOT(addActionTriggered()));
 	toolBar->addAction(addAction);
@@ -887,6 +888,9 @@ bool FilterTable::eventFilter(QObject* obj, QEvent* event)
 	{
 		if (type == QEvent::Wheel)
 		{
+			QWheelEvent* wheelEvent = (QWheelEvent*)event;
+			scrollStartPoint = wheelEvent->globalPos();
+
 			QWidget* widget = qobject_cast<QWidget*>(obj);
 			if (widget != NULL)
 			{
@@ -901,7 +905,7 @@ bool FilterTable::eventFilter(QObject* obj, QEvent* event)
 		{
 			QMouseEvent* mouseEvent = (QMouseEvent*)event;
 
-			if ((mouseEvent->globalPos() - scrollStartPoint).manhattanLength() > QApplication::startDragDistance())
+			if ((mouseEvent->globalPos() - scrollStartPoint).manhattanLength() > DPIHelper::scale(30))
 				scrollingNow = false;
 		}
 	}

Editor/FilterTableRow.cpp

@@ -22,6 +22,7 @@
 #include <QPainter>
 #include <QScrollBar>
 
+#include "Editor/helpers/DPIHelper.h"
 #include "FilterTableRow.h"
 #include "ui_FilterTableRow.h"
 
@@ -30,6 +31,7 @@ FilterTableRow::FilterTableRow(FilterTable* table, int number, FilterTable::Item
 	ui(new Ui::FilterTableRow)
 {
 	ui->setupUi(this);
+	ui->labelNumber->setMinimumWidth(DPIHelper::scale(25));
 
 	this->table = table;
 	this->item = item;

Editor/FilterTableRow.ui

@@ -147,7 +147,7 @@
    </property>
    <property name="icon">
     <iconset resource="Editor.qrc">
-     <normaloff>:/icons/16x16/list-add-green.png</normaloff>:/icons/16x16/list-add-green.png</iconset>
+     <normaloff>:/icons/list-add-green.ico</normaloff>:/icons/list-add-green.ico</iconset>
    </property>
    <property name="text">
     <string>Add</string>
@@ -156,7 +156,7 @@
   <action name="actionRemove">
    <property name="icon">
     <iconset resource="Editor.qrc">
-     <normaloff>:/icons/16x16/list-remove-red.png</normaloff>:/icons/16x16/list-remove-red.png</iconset>
+     <normaloff>:/icons/list-remove-red.ico</normaloff>:/icons/list-remove-red.ico</iconset>
    </property>
    <property name="text">
     <string>Remove</string>
@@ -168,7 +168,7 @@
    </property>
    <property name="icon">
     <iconset resource="Editor.qrc">
-     <normaloff>:/icons/16x16/accessories-text-editor.png</normaloff>:/icons/16x16/accessories-text-editor.png</iconset>
+     <normaloff>:/icons/accessories-text-editor.ico</normaloff>:/icons/accessories-text-editor.ico</iconset>
    </property>
    <property name="text">
     <string>Edit text</string>

Editor/MainWindow.cpp

@@ -40,6 +40,7 @@
 #include "helpers/LogHelper.h"
 #include "helpers/ChannelHelper.h"
 #include "Editor/helpers/GUIChannelHelper.h"
+#include "Editor/helpers/DPIHelper.h"
 #include "version.h"
 #include "FilterTable.h"
 #include "MainWindow.h"
@@ -64,6 +65,7 @@ MainWindow::MainWindow(QDir configDir, QWidget* parent)
 	}
 
 	ui->setupUi(this);
+	resize(DPIHelper::scale(QSize(1024, 768)));
 
 	LogHelper::set(stderr, true, false, false);
 
@@ -961,12 +963,17 @@ void MainWindow::loadPreferences()
 	ui->startFromComboBox->setCurrentIndex(settings.value("analysis/startFrom").toInt());
 	ui->analysisChannelComboBox->setCurrentText(settings.value("analysis/channel").toString());
 	ui->resolutionSpinBox->setValue(settings.value("analysis/resolution", 65536).toInt());
-	double zoomX = settings.value("analysis/zoomX", 1.0).toDouble();
+	double zoomX = DPIHelper::scaleZoom(settings.value("analysis/zoomX", 1.0).toDouble());
-	double zoomY = settings.value("analysis/zoomY", 1.0).toDouble();
+	double zoomY = DPIHelper::scaleZoom(settings.value("analysis/zoomY", 1.0).toDouble());
-	if (zoomX != 1.0 || zoomY != 1.0)
+	analysisPlotScene->setZoom(zoomX, zoomY);
-		analysisPlotScene->setZoom(zoomX, zoomY);
+	bool ok;
-	int scrollX = settings.value("analysis/scrollX", round(analysisPlotScene->hzToX(20))).toInt();
+	int scrollX = DPIHelper::scale(settings.value("analysis/scrollX").toDouble(&ok));
-	int scrollY = settings.value("analysis/scrollY", round(analysisPlotScene->dbToY(22))).toInt();
+	if (!ok)
+		scrollX = round(analysisPlotScene->hzToX(20));
+	int scrollY = DPIHelper::scale(settings.value("analysis/scrollY").toDouble(&ok));
+	if (!ok)
+		scrollY = round(analysisPlotScene->dbToY(22));
+
 	ui->graphicsView->setScrollOffsets(scrollX, scrollY);
 
 	QVariant openFilesValue = settings.value("openFiles");
@@ -1013,13 +1020,13 @@ void MainWindow::savePreferences()
 	settings.setValue("analysis/startFrom", ui->startFromComboBox->currentIndex());
 	settings.setValue("analysis/channel", ui->analysisChannelComboBox->currentText());
 	settings.setValue("analysis/resolution", ui->resolutionSpinBox->value());
-	settings.setValue("analysis/zoomX", analysisPlotScene->getZoomX());
+	settings.setValue("analysis/zoomX", DPIHelper::invScaleZoom(analysisPlotScene->getZoomX()));
-	settings.setValue("analysis/zoomY", analysisPlotScene->getZoomY());
+	settings.setValue("analysis/zoomY", DPIHelper::invScaleZoom(analysisPlotScene->getZoomY()));
 	QScrollBar* hScrollBar = ui->graphicsView->horizontalScrollBar();
-	int value = hScrollBar->value();
+	double value = DPIHelper::invScale(hScrollBar->value());
 	settings.setValue("analysis/scrollX", value);
 	QScrollBar* vScrollBar = ui->graphicsView->verticalScrollBar();
-	value = vScrollBar->value();
+	value = DPIHelper::invScale(vScrollBar->value());
 	settings.setValue("analysis/scrollY", value);
 
 	QStringList fileList;

Editor/MainWindow.ui

@@ -48,7 +48,7 @@
      <x>0</x>
      <y>0</y>
      <width>1024</width>
-     <height>21</height>
+     <height>26</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuFile">
@@ -562,7 +562,7 @@
   <action name="actionNew">
    <property name="icon">
     <iconset resource="Editor.qrc">
-     <normaloff>:/icons/16x16/document-new.png</normaloff>:/icons/16x16/document-new.png</iconset>
+     <normaloff>:/icons/document-new.ico</normaloff>:/icons/document-new.ico</iconset>
    </property>
    <property name="text">
     <string>New</string>
@@ -574,7 +574,7 @@
   <action name="actionOpen">
    <property name="icon">
     <iconset resource="Editor.qrc">
-     <normaloff>:/icons/16x16/document-open.png</normaloff>:/icons/16x16/document-open.png</iconset>
+     <normaloff>:/icons/document-open.ico</normaloff>:/icons/document-open.ico</iconset>
    </property>
    <property name="text">
     <string>Open</string>
@@ -589,7 +589,7 @@
   <action name="actionSave">
    <property name="icon">
     <iconset resource="Editor.qrc">
-     <normaloff>:/icons/16x16/document-save.png</normaloff>:/icons/16x16/document-save.png</iconset>
+     <normaloff>:/icons/document-save.ico</normaloff>:/icons/document-save.ico</iconset>
    </property>
    <property name="text">
     <string>Save</string>
@@ -604,7 +604,7 @@
   <action name="actionSaveAs">
    <property name="icon">
     <iconset resource="Editor.qrc">
-     <normaloff>:/icons/16x16/document-save-as.png</normaloff>:/icons/16x16/document-save-as.png</iconset>
+     <normaloff>:/icons/document-save-as.ico</normaloff>:/icons/document-save-as.ico</iconset>
    </property>
    <property name="text">
     <string>Save as...</string>
@@ -624,7 +624,7 @@
   <action name="actionCut">
    <property name="icon">
     <iconset resource="Editor.qrc">
-     <normaloff>:/icons/16x16/edit-cut.png</normaloff>:/icons/16x16/edit-cut.png</iconset>
+     <normaloff>:/icons/edit-cut.ico</normaloff>:/icons/edit-cut.ico</iconset>
    </property>
    <property name="text">
     <string>Cut</string>
@@ -636,7 +636,7 @@
   <action name="actionCopy">
    <property name="icon">
     <iconset resource="Editor.qrc">
-     <normaloff>:/icons/16x16/edit-copy.png</normaloff>:/icons/16x16/edit-copy.png</iconset>
+     <normaloff>:/icons/edit-copy.ico</normaloff>:/icons/edit-copy.ico</iconset>
    </property>
    <property name="text">
     <string>Copy</string>
@@ -648,7 +648,7 @@
   <action name="actionPaste">
    <property name="icon">
     <iconset resource="Editor.qrc">
-     <normaloff>:/icons/16x16/edit-paste.png</normaloff>:/icons/16x16/edit-paste.png</iconset>
+     <normaloff>:/icons/edit-paste.ico</normaloff>:/icons/edit-paste.ico</iconset>
    </property>
    <property name="text">
     <string>Paste</string>
@@ -660,7 +660,7 @@
   <action name="actionDelete">
    <property name="icon">
     <iconset resource="Editor.qrc">
-     <normaloff>:/icons/16x16/edit-delete.png</normaloff>:/icons/16x16/edit-delete.png</iconset>
+     <normaloff>:/icons/edit-delete.ico</normaloff>:/icons/edit-delete.ico</iconset>
    </property>
    <property name="text">
     <string>Delete</string>

Editor/guis/BiQuadFilterGUI.cpp

@@ -19,9 +19,11 @@
 
 #define _USE_MATH_DEFINES
 #include <cmath>
+#include <QStandardItemModel>
+
+#include "Editor/helpers/DPIHelper.h"
 #include "BiQuadFilterGUI.h"
 #include "ui_BiQuadFilterGUI.h"
-#include <QStandardItemModel>
 
 static const double dialFreqSteps = 1000;
 static const double dialFreqMin = 20;
@@ -35,6 +37,10 @@ BiQuadFilterGUI::BiQuadFilterGUI(BiQuadFilter* filter)
 {
 	ui->setupUi(this);
 
+	ui->freqDial->setFixedSize(DPIHelper::scale(QSize(100, 66)));
+	ui->gainDial->setFixedSize(DPIHelper::scale(QSize(100, 66)));
+	ui->qDial->setFixedSize(DPIHelper::scale(QSize(100, 66)));
+
 	ui->typeComboBox->addItem(tr("Peaking filter"), BiQuad::PEAKING);
 	ui->typeComboBox->addItem(tr("Low-pass filter"), BiQuad::LOW_PASS);
 	ui->typeComboBox->addItem(tr("High-pass filter"), BiQuad::HIGH_PASS);

Editor/guis/ChannelFilterGUIDialog.cpp

@@ -21,6 +21,7 @@
 #include <Ks.h>
 #include <KsMedia.h>
 
+#include "Editor/helpers/DPIHelper.h"
 #include "Editor/helpers/GUIChannelHelper.h"
 #include "ChannelFilterGUIDialog.h"
 #include "ui_ChannelFilterGUIDialog.h"
@@ -35,6 +36,7 @@ ChannelFilterGUIDialog::ChannelFilterGUIDialog(QWidget* parent, QStringList sele
 	ui(new Ui::ChannelFilterGUIDialog)
 {
 	ui->setupUi(this);
+	resize(DPIHelper::scale(QSize(355, 329)));
 
 	ui->centerCheckBox->setProperty(PROPERTY_POSITION, SPEAKER_FRONT_CENTER);
 	ui->leftCheckBox->setProperty(PROPERTY_POSITION, SPEAKER_FRONT_LEFT);

Editor/guis/ChannelFilterGUIDialog.ui

@@ -203,7 +203,7 @@
         </property>
         <property name="icon">
          <iconset resource="../Editor.qrc">
-          <normaloff>:/icons/16x16/list-remove-red.png</normaloff>:/icons/16x16/list-remove-red.png</iconset>
+          <normaloff>:/icons/list-remove-red.ico</normaloff>:/icons/list-remove-red.ico</iconset>
         </property>
        </widget>
       </item>
@@ -214,7 +214,7 @@
         </property>
         <property name="icon">
          <iconset resource="../Editor.qrc">
-          <normaloff>:/icons/16x16/list-add-green.png</normaloff>:/icons/16x16/list-add-green.png</iconset>
+          <normaloff>:/icons/list-add-green.ico</normaloff>:/icons/list-add-green.ico</iconset>
         </property>
        </widget>
       </item>

Editor/guis/ChannelFilterGUIScene.cpp

@@ -17,6 +17,7 @@
     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
+#include "Editor/helpers/DPIHelper.h"
 #include "ChannelFilterGUIChannelItem.h"
 #include "ChannelFilterGUIScene.h"
 
@@ -47,7 +48,7 @@ void ChannelFilterGUIScene::load(vector<wstring> channelNames, QStringList selec
 
 		channelMap.insert(c, item);
 		if (c != "ALL")
-			channelMap.insert(QString().setNum(i), item);
+			channelMap.insert(QString().setNum(i + 1), item);
 		lastItem = item;
 	}
 
@@ -66,7 +67,8 @@ void ChannelFilterGUIScene::load(vector<wstring> channelNames, QStringList selec
 		item->setSelected(true);
 	}
 
-	setSceneRect(itemsBoundingRect().marginsAdded(QMarginsF(2, 2, 2, 2)));
+	int margin = DPIHelper::scale(4);
+	setSceneRect(itemsBoundingRect().marginsAdded(QMarginsF(margin, margin, margin, margin)));
 	blockSignals(false);
 }
 

Editor/guis/CommentFilterGUI.cpp

@@ -17,6 +17,7 @@
     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
+#include "Editor/helpers/DPIHelper.h"
 #include "CommentFilterGUI.h"
 #include "ui_CommentFilterGUI.h"
 
@@ -35,7 +36,7 @@ CommentFilterGUI::CommentFilterGUI(IFilterGUI* child, bool isComment)
 	ui->horizontalLayout->addWidget(child);
 
 	ui->actionPowerOn->setChecked(!isComment);
-	ui->toolBar->setIconSize(QSize(24, 24));
+	ui->toolBar->setIconSize(DPIHelper::scale(QSize(24, 24)));
 	ui->toolBar->addAction(ui->actionPowerOn);
 	ui->toolBar->updateMaximumHeight();
 

Editor/guis/CommentFilterGUI.ui

@@ -49,8 +49,8 @@
    </property>
    <property name="icon">
     <iconset resource="../Editor.qrc">
-     <normaloff>:/icons/power_off.png</normaloff>
+     <normaloff>:/icons/power_off.ico</normaloff>
-     <normalon>:/icons/power_on.png</normalon>:/icons/power_off.png</iconset>
+     <normalon>:/icons/power_on.ico</normalon>:/icons/power_off.ico</iconset>
    </property>
    <property name="text">
     <string>Power on</string>

Editor/guis/ConvolutionFilterGUI.ui

@@ -33,7 +33,7 @@
      </property>
      <property name="icon">
       <iconset resource="../Editor.qrc">
-       <normaloff>:/icons/16x16/document-open.png</normaloff>:/icons/16x16/document-open.png</iconset>
+       <normaloff>:/icons/document-open.ico</normaloff>:/icons/document-open.ico</iconset>
      </property>
     </widget>
    </item>

Editor/guis/CopyFilterGUI.cpp

@@ -18,12 +18,13 @@
 */
 
 #include "Editor/widgets/ResizeCorner.h"
+#include "Editor/helpers/DPIHelper.h"
 #include "helpers/ChannelHelper.h"
 #include "CopyFilterGUIForm.h"
 #include "CopyFilterGUI.h"
 #include "ui_CopyFilterGUI.h"
 
-static const int DEFAULT_HEIGHT = 88;
+static const double DEFAULT_HEIGHT = 88;
 
 using namespace std;
 
@@ -39,7 +40,7 @@ CopyFilterGUI::CopyFilterGUI(CopyFilter* filter, FilterTable* filterTable)
 	ui->form->load(filter->getAssignments());
 
 	ResizeCorner* cornerWidget = new ResizeCorner(filterTable,
-			QSize(0, 50), QSize(0, INT_MAX),
+			QSize(0, DPIHelper::scale(85)), QSize(0, INT_MAX),
 			[this]() {
 		return QSize(0, ui->scrollArea->height());
 	},
@@ -167,14 +168,14 @@ void CopyFilterGUI::store(QString& command, QString& parameters)
 
 void CopyFilterGUI::loadPreferences(const QVariantMap& prefs)
 {
-	ui->scrollArea->setFixedHeight(prefs.value("height", DEFAULT_HEIGHT).toInt());
+	ui->scrollArea->setFixedHeight(DPIHelper::scale(prefs.value("height", DEFAULT_HEIGHT).toDouble()));
 	ui->tabWidget->setCurrentIndex(prefs.value("tabIndex", 0).toInt());
 }
 
 void CopyFilterGUI::storePreferences(QVariantMap& prefs)
 {
-	if (ui->scrollArea->height() != DEFAULT_HEIGHT)
+	if (DPIHelper::invScale(ui->scrollArea->height()) != DEFAULT_HEIGHT)
-		prefs.insert("height", ui->scrollArea->height());
+		prefs.insert("height", DPIHelper::invScale(ui->scrollArea->height()));
 	if (ui->tabWidget->currentIndex() != 0)
 		prefs.insert("tabIndex", ui->tabWidget->currentIndex());
 }

Editor/guis/CopyFilterGUI.ui

@@ -56,7 +56,7 @@
      <widget class="QWidget" name="tab">
       <attribute name="icon">
        <iconset resource="../Editor.qrc">
-        <normaloff>:/icons/16x16/applications-graphics-rotated.png</normaloff>:/icons/16x16/applications-graphics-rotated.png</iconset>
+        <normaloff>:/icons/applications-graphics-rotated.ico</normaloff>:/icons/applications-graphics-rotated.ico</iconset>
       </attribute>
       <attribute name="title">
        <string/>
@@ -101,7 +101,7 @@
      <widget class="QWidget" name="tab_2">
       <attribute name="icon">
        <iconset resource="../Editor.qrc">
-        <normaloff>:/icons/16x16/format-justify-fill-rotated.png</normaloff>:/icons/16x16/format-justify-fill-rotated.png</iconset>
+        <normaloff>:/icons/format-justify-fill-rotated.ico</normaloff>:/icons/format-justify-fill-rotated.ico</iconset>
       </attribute>
       <attribute name="title">
        <string/>
@@ -138,8 +138,8 @@
            <rect>
             <x>0</x>
             <y>0</y>
-            <width>348</width>
+            <width>380</width>
-            <height>88</height>
+            <height>90</height>
            </rect>
           </property>
          </widget>

Editor/guis/CopyFilterGUIConnectionItem.cpp

@@ -23,6 +23,7 @@
 #include <QPainter>
 #include <QLineEdit>
 
+#include "Editor/helpers/DPIHelper.h"
 #include "Editor/widgets/ResizingLineEdit.h"
 #include "CopyFilterGUIChannelItem.h"
 #include "CopyFilterGUIScene.h"
@@ -32,7 +33,6 @@ static const int maxArrowSize = 6;
 
 CopyFilterGUIConnectionItem::CopyFilterGUIConnectionItem()
 {
-
 }
 
 CopyFilterGUIConnectionItem::CopyFilterGUIConnectionItem(CopyFilterGUIChannelItem* source, CopyFilterGUIChannelItem* target, double factor, bool isDecibel)
@@ -52,7 +52,8 @@ QRectF CopyFilterGUIConnectionItem::boundingRect() const
 	QRectF rect = QGraphicsLineItem::boundingRect();
 
 	QPointF p2 = line().p2();
-	QRectF rect2 = QRectF(p2.x() - maxArrowSize, p2.y() - maxArrowSize, 2 * maxArrowSize, 2 * maxArrowSize);
+	int as = DPIHelper::scale(maxArrowSize);
+	QRectF rect2 = QRectF(p2.x() - as, p2.y() - as, 2 * as, 2 * as);
 
 	return rect.united(rect2);
 }
@@ -66,7 +67,7 @@ QPainterPath CopyFilterGUIConnectionItem::shape() const
 	double length = line().length();
 	if (length > 0)
 	{
-		double offset = min(length, maxArrowSize);
+		double offset = min(length, DPIHelper::scale(maxArrowSize));
 		QLineF unit = l.unitVector();
 		QLineF normal = l.normalVector().unitVector();
 		QPointF v(unit.dx(), unit.dy());
@@ -92,7 +93,7 @@ QPainterPath CopyFilterGUIConnectionItem::shape() const
 		if (factor != 1.0 || isDecibel)
 		{
 			QFont font;
-			font.setPixelSize(10);
+			font.setPixelSize(DPIHelper::scale(10));
 			QPointF center = (l.p1() + l.p2()) / 2;
 			QString text = QString("%1").arg(factor);
 			if (isDecibel)
@@ -130,7 +131,7 @@ void CopyFilterGUIConnectionItem::paint(QPainter* painter, const QStyleOptionGra
 		painter->drawLine(line());
 
 		double length = line().length();
-		double offset = min(length, maxArrowSize);
+		double offset = min(length, DPIHelper::scale(maxArrowSize));
 		QLineF unit = l.unitVector();
 		QLineF normal = l.normalVector().unitVector();
 		QPointF v(unit.dx(), unit.dy());
@@ -149,7 +150,7 @@ void CopyFilterGUIConnectionItem::paint(QPainter* painter, const QStyleOptionGra
 		if (factor != 1.0 || isDecibel)
 		{
 			QFont font = painter->font();
-			font.setPixelSize(10);
+			font.setPixelSize(DPIHelper::scale(10));
 			painter->setFont(font);
 			QPointF center = (l.p1() + l.p2()) / 2;
 			QString text = QString("%1").arg(factor);

Editor/guis/CopyFilterGUIForm.cpp

@@ -91,7 +91,7 @@ void CopyFilterGUIForm::load(vector<Assignment> assignments)
 
 			QPushButton* addSummandButton = new QPushButton(this);
 			addSummandButton->setText(tr("Add summand"));
-			addSummandButton->setIcon(QIcon(":/icons/16x16/list-add-green.png"));
+			addSummandButton->setIcon(QIcon(":/icons/list-add-green.ico"));
 			gridLayout->addWidget(addSummandButton, row, 4);
 			connect(addSummandButton, SIGNAL(pressed()), this, SLOT(addSummand()));
 
@@ -100,7 +100,7 @@ void CopyFilterGUIForm::load(vector<Assignment> assignments)
 				removeButton->setText(tr("Remove assignment"));
 			else
 				removeButton->setText(tr("Remove summand"));
-			removeButton->setIcon(QIcon(":/icons/16x16/list-remove-red.png"));
+			removeButton->setIcon(QIcon(":/icons/list-remove-red.ico"));
 			gridLayout->addWidget(removeButton, row, 5);
 			connect(removeButton, SIGNAL(pressed()), this, SLOT(remove()));
 
@@ -113,7 +113,7 @@ void CopyFilterGUIForm::load(vector<Assignment> assignments)
 
 	QPushButton* addAssignmentButton = new QPushButton(this);
 	addAssignmentButton->setText(tr("Add assignment"));
-	addAssignmentButton->setIcon(QIcon(":/icons/16x16/list-add-green.png"));
+	addAssignmentButton->setIcon(QIcon(":/icons/list-add-green.ico"));
 	gridLayout->addWidget(addAssignmentButton, row++, 0, 1, 4);
 	connect(addAssignmentButton, SIGNAL(pressed()), this, SLOT(addAssignment()));
 }

Editor/guis/CopyFilterGUIScene.cpp

@@ -23,6 +23,7 @@
 #include <QLineEdit>
 #include <QToolButton>
 
+#include "Editor/helpers/DPIHelper.h"
 #include "Editor/widgets/ResizingLineEdit.h"
 #include "CopyFilterGUIChannelItem.h"
 #include "CopyFilterGUIScene.h"
@@ -102,12 +103,13 @@ void CopyFilterGUIScene::load(const vector<wstring>& channelNames, vector<Assign
 	}
 
 	QToolButton* addButton = new QToolButton;
-	addButton->setIcon(QIcon(":/icons/16x16/list-add-green.png"));
+	addButton->setIcon(QIcon(":/icons/list-add-green.ico"));
 	connect(addButton, SIGNAL(clicked()), this, SLOT(addOutputChannel()));
 	addProxyItem = addWidget(addButton);
 	addProxyItem->setPos(getNextChannelPoint(lastOutputItem, true));
 
-	setSceneRect(itemsBoundingRect().marginsAdded(QMarginsF(2, 2, 2, 2)));
+	int margin = DPIHelper::scale(4);
+	setSceneRect(itemsBoundingRect().marginsAdded(QMarginsF(margin, margin, margin, margin)));
 }
 
 std::vector<Assignment> CopyFilterGUIScene::buildAssignments()

Editor/guis/DelayFilterGUI.cpp

@@ -17,6 +17,7 @@
     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
+#include "Editor/helpers/DPIHelper.h"
 #include "DelayFilterGUI.h"
 #include "ui_DelayFilterGUI.h"
 
@@ -29,6 +30,7 @@ DelayFilterGUI::DelayFilterGUI(double delay, bool isMs)
 {
 	ui->setupUi(this);
 
+	ui->delayDial->setFixedSize(DPIHelper::scale(QSize(100, 66)));
 	ui->unitComboBox->setCurrentIndex(isMs ? 0 : 1);
 	ui->delaySpinBox->setValue(delay);
 }

Editor/guis/DeviceFilterGUIDialog.cpp

@@ -17,6 +17,7 @@
     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
+#include "Editor/helpers/DPIHelper.h"
 #include "DeviceFilterGUIDialog.h"
 #include "ui_DeviceFilterGUIDialog.h"
 
@@ -29,6 +30,7 @@ DeviceFilterGUIDialog::DeviceFilterGUIDialog(DeviceFilterGUI* gui, DeviceFilterG
 	ui(new Ui::DeviceFilterGUIDialog)
 {
 	ui->setupUi(this);
+	resize(DPIHelper::scale(QSize(500, 350)));
 
 	bool all = pattern.trimmed() == "all";
 	ui->allDevicesCheckBox->setChecked(all);

Editor/guis/GraphicEQFilterGUI.cpp

@@ -23,14 +23,15 @@
 #include <QTextStream>
 
 #include "helpers/GainIterator.h"
+#include "Editor/helpers/DPIHelper.h"
 #include "Editor/widgets/ResizeCorner.h"
 #include "Editor/FilterTable.h"
 #include "GraphicEQFilterGUIView.h"
 #include "GraphicEQFilterGUI.h"
 #include "ui_GraphicEQFilterGUI.h"
 
-static const int DEFAULT_TABLE_WIDTH = 119;
+static const double DEFAULT_TABLE_WIDTH = 119;
-static const int DEFAULT_VIEW_HEIGHT = 150;
+static const double DEFAULT_VIEW_HEIGHT = 150;
 
 using namespace std;
 
@@ -40,6 +41,10 @@ GraphicEQFilterGUI::GraphicEQFilterGUI(GraphicEQFilter* filter, QString configPa
 	: ui(new Ui::GraphicEQFilterGUI), configPath(configPath)
 {
 	ui->setupUi(this);
+	ui->tableWidget->horizontalHeader()->setMinimumSectionSize(DPIHelper::scale(10));
+	ui->tableWidget->horizontalHeader()->setDefaultSectionSize(DPIHelper::scale(10));
+	ui->tableWidget->verticalHeader()->setMinimumSectionSize(DPIHelper::scale(23));
+	ui->tableWidget->verticalHeader()->setDefaultSectionSize(DPIHelper::scale(23));
 
 	scene = new GraphicEQFilterGUIScene(ui->graphicsView);
 	ui->graphicsView->setScene(scene);
@@ -109,35 +114,39 @@ void GraphicEQFilterGUI::store(QString& command, QString& parameters)
 
 void GraphicEQFilterGUI::loadPreferences(const QVariantMap& prefs)
 {
-	ui->tableWidget->setFixedWidth(prefs.value("tableWidth", DEFAULT_TABLE_WIDTH).toInt());
+	ui->tableWidget->setFixedWidth(DPIHelper::scale(prefs.value("tableWidth", DEFAULT_TABLE_WIDTH).toDouble()));
-	ui->graphicsView->setFixedHeight(prefs.value("viewHeight", DEFAULT_VIEW_HEIGHT).toInt());
+	ui->graphicsView->setFixedHeight(DPIHelper::scale(prefs.value("viewHeight", DEFAULT_VIEW_HEIGHT).toDouble()));
-	double zoomX = prefs.value("zoomX", 1.0).toDouble();
+	double zoomX = DPIHelper::scaleZoom(prefs.value("zoomX", 1.0).toDouble());
-	double zoomY = prefs.value("zoomY", 1.0).toDouble();
+	double zoomY = DPIHelper::scaleZoom(prefs.value("zoomY", 1.0).toDouble());
-	if (zoomX != 1.0 || zoomY != 1.0)
+	scene->setZoom(zoomX, zoomY);
-		scene->setZoom(zoomX, zoomY);
+	bool ok;
-	int scrollX = prefs.value("scrollX", round(scene->hzToX(20))).toInt();
+	int scrollX = DPIHelper::scale(prefs.value("scrollX").toDouble(&ok));
-	int scrollY = prefs.value("scrollY", round(scene->dbToY(22))).toInt();
+	if (!ok)
+		scrollX = round(scene->hzToX(20));
+	int scrollY = DPIHelper::scale(prefs.value("scrollY").toDouble(&ok));
+	if (!ok)
+		scrollY = round(scene->dbToY(22));
 	ui->graphicsView->setScrollOffsets(scrollX, scrollY);
 }
 
 void GraphicEQFilterGUI::storePreferences(QVariantMap& prefs)
 {
-	if (ui->tableWidget->width() != DEFAULT_TABLE_WIDTH)
+	if (DPIHelper::invScale(ui->tableWidget->width()) != DEFAULT_TABLE_WIDTH)
-		prefs.insert("tableWidth", ui->tableWidget->width());
+		prefs.insert("tableWidth", DPIHelper::invScale(ui->tableWidget->width()));
-	if (ui->graphicsView->height() != DEFAULT_VIEW_HEIGHT)
+	if (DPIHelper::invScale(ui->graphicsView->height()) != DEFAULT_VIEW_HEIGHT)
-		prefs.insert("viewHeight", ui->graphicsView->height());
+		prefs.insert("viewHeight", DPIHelper::invScale(ui->graphicsView->height()));
-	if (scene->getZoomX() != 1.0)
+	if (DPIHelper::invScaleZoom(scene->getZoomX()) != 1.0)
-		prefs.insert("zoomX", scene->getZoomX());
+		prefs.insert("zoomX", DPIHelper::invScaleZoom(scene->getZoomX()));
-	if (scene->getZoomY() != 1.0)
+	if (DPIHelper::invScaleZoom(scene->getZoomY()) != 1.0)
-		prefs.insert("zoomY", scene->getZoomY());
+		prefs.insert("zoomY", DPIHelper::invScaleZoom(scene->getZoomY()));
 	QScrollBar* hScrollBar = ui->graphicsView->horizontalScrollBar();
 	int value = hScrollBar->value();
 	if (value != round(scene->hzToX(20)))
-		prefs.insert("scrollX", value);
+		prefs.insert("scrollX", DPIHelper::invScale(value));
 	QScrollBar* vScrollBar = ui->graphicsView->verticalScrollBar();
 	value = vScrollBar->value();
 	if (value != round(scene->dbToY(22)))
-		prefs.insert("scrollY", value);
+		prefs.insert("scrollY", DPIHelper::invScale(value));
 }
 
 void GraphicEQFilterGUI::insertRow(int index, double hz, double db)

Editor/guis/GraphicEQFilterGUI.ui

@@ -197,14 +197,7 @@
       </widget>
      </item>
      <item>
-      <widget class="QToolBar" name="toolBar">
+      <widget class="QToolBar" name="toolBar"/>
-       <property name="iconSize">
-        <size>
-         <width>16</width>
-         <height>16</height>
-        </size>
-       </property>
-      </widget>
      </item>
     </layout>
    </item>
@@ -212,7 +205,7 @@
   <action name="actionImport">
    <property name="icon">
     <iconset resource="../Editor.qrc">
-     <normaloff>:/icons/16x16/document-open.png</normaloff>:/icons/16x16/document-open.png</iconset>
+     <normaloff>:/icons/document-open.ico</normaloff>:/icons/document-open.ico</iconset>
    </property>
    <property name="text">
     <string>Import</string>
@@ -221,7 +214,7 @@
   <action name="actionExport">
    <property name="icon">
     <iconset resource="../Editor.qrc">
-     <normaloff>:/icons/16x16/document-save-as.png</normaloff>:/icons/16x16/document-save-as.png</iconset>
+     <normaloff>:/icons/document-save-as.ico</normaloff>:/icons/document-save-as.ico</iconset>
    </property>
    <property name="text">
     <string>Export</string>
@@ -230,7 +223,7 @@
   <action name="actionInvertResponse">
    <property name="icon">
     <iconset resource="../Editor.qrc">
-     <normaloff>:/icons/invert_response.png</normaloff>:/icons/invert_response.png</iconset>
+     <normaloff>:/icons/invert_response.ico</normaloff>:/icons/invert_response.ico</iconset>
    </property>
    <property name="text">
     <string>Invert response</string>
@@ -239,7 +232,7 @@
   <action name="actionNormalizeResponse">
    <property name="icon">
     <iconset resource="../Editor.qrc">
-     <normaloff>:/icons/normalize_response.png</normaloff>:/icons/normalize_response.png</iconset>
+     <normaloff>:/icons/normalize_response.ico</normaloff>:/icons/normalize_response.ico</iconset>
    </property>
    <property name="text">
     <string>Normalize response</string>
@@ -248,7 +241,7 @@
   <action name="actionResetResponse">
    <property name="icon">
     <iconset resource="../Editor.qrc">
-     <normaloff>:/icons/reset_response.png</normaloff>:/icons/reset_response.png</iconset>
+     <normaloff>:/icons/reset_response.ico</normaloff>:/icons/reset_response.ico</iconset>
    </property>
    <property name="text">
     <string>Reset response</string>

Editor/guis/GraphicEQFilterGUIItem.cpp

@@ -19,6 +19,7 @@
 
 #include <QPainter>
 
+#include "Editor/helpers/DPIHelper.h"
 #include "GraphicEQFilterGUIScene.h"
 #include "GraphicEQFilterGUIItem.h"
 
@@ -33,7 +34,8 @@ GraphicEQFilterGUIItem::GraphicEQFilterGUIItem(int index, double hz, double db)
 
 QRectF GraphicEQFilterGUIItem::boundingRect() const
 {
-	return QRectF(-size / 2, -size / 2, size, size);
+	int s = DPIHelper::scale(size);
+	return QRectF(-s / 2, -s / 2, s, s);
 }
 
 QPainterPath GraphicEQFilterGUIItem::shape() const
@@ -55,7 +57,7 @@ void GraphicEQFilterGUIItem::paint(QPainter* painter, const QStyleOptionGraphics
 			painter->setPen(Qt::white);
 
 		QFont font;
-		font.setPixelSize(9);
+		font.setPixelSize(DPIHelper::scale(9));
 		font.setLetterSpacing(QFont::AbsoluteSpacing, -1);
 		QFontMetrics metrics(font);
 		painter->setFont(font);

Editor/guis/IncludeFilterGUI.ui

@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>400</width>
-    <height>22</height>
+    <height>26</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -43,7 +43,7 @@
      </property>
      <property name="icon">
       <iconset resource="../Editor.qrc">
-       <normaloff>:/icons/16x16/document-open.png</normaloff>:/icons/16x16/document-open.png</iconset>
+       <normaloff>:/icons/document-open.ico</normaloff>:/icons/document-open.ico</iconset>
      </property>
     </widget>
    </item>
@@ -67,7 +67,7 @@
      </property>
      <property name="icon">
       <iconset resource="../Editor.qrc">
-       <normaloff>:/icons/16x16/go-up.png</normaloff>:/icons/16x16/go-up.png</iconset>
+       <normaloff>:/icons/go-up.ico</normaloff>:/icons/go-up.ico</iconset>
      </property>
     </widget>
    </item>

Editor/guis/PreampFilterGUI.cpp

@@ -19,6 +19,7 @@
 
 #include <cmath>
 
+#include "Editor/helpers/DPIHelper.h"
 #include "PreampFilterGUI.h"
 #include "ui_PreampFilterGUI.h"
 
@@ -29,6 +30,7 @@ PreampFilterGUI::PreampFilterGUI(double dbGain)
 {
 	ui->setupUi(this);
 
+	ui->dial->setFixedSize(DPIHelper::scale(QSize(100, 66)));
 	ui->doubleSpinBox->setValue(dbGain);
 }
 

Editor/helpers/DPIHelper.cpp

@@ -0,0 +1,70 @@
+/*
+    This file is part of EqualizerAPO, a system-wide equalizer.
+    Copyright (C) 2016  Jonas Thedering
+
+    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.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "DPIHelper.h"
+
+#include <QApplication>
+#include <QFont>
+#include <QFontMetrics>
+#include <QScreen>
+
+QSize DPIHelper::scale(QSize size)
+{
+	if (qApp->testAttribute(Qt::AA_Use96Dpi))
+		return size;
+
+	qreal dpi = QGuiApplication::primaryScreen()->logicalDotsPerInchX();
+	return QSize(qRound(size.width() * dpi / 96), qRound(size.height() * dpi / 96));
+}
+
+int DPIHelper::scale(double pixel)
+{
+	if (qApp->testAttribute(Qt::AA_Use96Dpi))
+		return qRound(pixel);
+
+	qreal dpi = QGuiApplication::primaryScreen()->logicalDotsPerInchX();
+	return qRound(pixel * dpi / 96);
+}
+
+double DPIHelper::scaleZoom(double zoom)
+{
+	if (qApp->testAttribute(Qt::AA_Use96Dpi))
+		return zoom;
+
+	qreal dpi = QGuiApplication::primaryScreen()->logicalDotsPerInchX();
+	return zoom * dpi / 96;
+}
+
+double DPIHelper::invScale(int pixel)
+{
+	if (qApp->testAttribute(Qt::AA_Use96Dpi))
+		return pixel;
+
+	qreal dpi = QGuiApplication::primaryScreen()->logicalDotsPerInchX();
+	return pixel * 96 / dpi;
+}
+
+double DPIHelper::invScaleZoom(double zoom)
+{
+	if (qApp->testAttribute(Qt::AA_Use96Dpi))
+		return zoom;
+
+	qreal dpi = QGuiApplication::primaryScreen()->logicalDotsPerInchX();
+	return zoom * 96 / dpi;
+}

Editor/helpers/DPIHelper.h

@@ -0,0 +1,32 @@
+/*
+	This file is part of EqualizerAPO, a system-wide equalizer.
+	Copyright (C) 2016  Jonas Thedering
+
+	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.,
+	51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include <QSize>
+
+#pragma once
+
+class DPIHelper
+{
+public:
+	static QSize scale(QSize size);
+	static int scale(double pixel);
+	static double scaleZoom(double zoom);
+	static double invScale(int pixel);
+	static double invScaleZoom(double zoom);
+};

Editor/icons/arrow_right.svg

@@ -15,9 +15,9 @@
    version="1.1"
    inkscape:version="0.91 r13725"
    viewBox="0 0 24 15"
-   inkscape:export-filename="C:\Eigene Dateien\Entwickl\EqualizerAPO\trunk\Editor\icons\arrow_right.png"
+   inkscape:export-filename="C:\Eigene Dateien\Entwickl\EqualizerAPO\trunk\Editor\icons\arrow_right_48.png"
-   inkscape:export-xdpi="90"
+   inkscape:export-xdpi="180"
-   inkscape:export-ydpi="90"
+   inkscape:export-ydpi="180"
    sodipodi:docname="arrow_right.svg">
   <defs
      id="defs3346" />
@@ -29,16 +29,16 @@
      inkscape:pageopacity="0.0"
      inkscape:pageshadow="2"
      inkscape:zoom="22.197802"
-     inkscape:cx="8.8534553"
+     inkscape:cx="-3.2423369"
      inkscape:cy="1.9902411"
      inkscape:current-layer="layer1"
      showgrid="true"
      inkscape:grid-bbox="true"
      inkscape:document-units="px"
-     inkscape:window-width="1920"
+     inkscape:window-width="2560"
-     inkscape:window-height="1018"
+     inkscape:window-height="1365"
-     inkscape:window-x="-8"
+     inkscape:window-x="-9"
-     inkscape:window-y="-8"
+     inkscape:window-y="-9"
      inkscape:window-maximized="1" />
   <metadata
      id="metadata3349">
@@ -48,7 +48,7 @@
         <dc:format>image/svg+xml</dc:format>
         <dc:type
            rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
+        <dc:title />
       </cc:Work>
     </rdf:RDF>
   </metadata>

Editor/icons/invert_response.svg

@@ -15,10 +15,10 @@
    version="1.1"
    inkscape:version="0.91 r13725"
    viewBox="0 0 16 16"
-   sodipodi:docname="mirror_response.svg"
+   sodipodi:docname="invert_response.svg"
-   inkscape:export-filename="C:\Eigene Dateien\Entwickl\EqualizerAPO\trunk\Editor\guis\mirror_response.png"
+   inkscape:export-filename="C:\Eigene Dateien\Entwickl\EqualizerAPO\trunk\Editor\icons\invert_response_32.png"
-   inkscape:export-xdpi="90"
+   inkscape:export-xdpi="180"
-   inkscape:export-ydpi="90">
+   inkscape:export-ydpi="180">
   <defs
      id="defs6175" />
   <sodipodi:namedview
@@ -29,16 +29,16 @@
      inkscape:pageopacity="0.0"
      inkscape:pageshadow="2"
      inkscape:zoom="22.197802"
-     inkscape:cx="-1.8433169"
+     inkscape:cx="-13.939109"
      inkscape:cy="8"
      inkscape:current-layer="layer1"
      showgrid="true"
      inkscape:grid-bbox="true"
      inkscape:document-units="px"
-     inkscape:window-width="1920"
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-   inkscape:export-filename="C:\Eigene Dateien\Entwickl\EqualizerAPO\trunk\Editor\guis\power_on2.png"
+   inkscape:export-filename="C:\Eigene Dateien\Entwickl\EqualizerAPO\trunk\Editor\icons\power_off_48.png"
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+        <dc:title></dc:title>
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+    </rdf:RDF>
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+     inkscape:label="Layer 1"
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Editor/main.cpp

@@ -22,6 +22,7 @@
 #include <QDir>
 #include <QCommandLineParser>
 #include <QSettings>
+#include "CustomStyle.h"
 #include "MainWindow.h"
 #include "helpers/RegistryHelper.h"
 
@@ -41,6 +42,7 @@ int main(int argc, char* argv[])
 	do
 	{
 		QApplication application(argc, argv);
+		application.setStyle(new CustomStyle(application.style()));
 
 		QSettings settings(QString::fromWCharArray(EDITOR_REGPATH), QSettings::NativeFormat);
 		QVariant languageValue = settings.value("language");

Editor/widgets/ChannelGraphItem.cpp

@@ -20,6 +20,7 @@
 #include <QGraphicsScene>
 #include <QPainter>
 
+#include "Editor/helpers/DPIHelper.h"
 #include "ChannelGraphItem.h"
 
 static const float margin = 5;
@@ -43,8 +44,8 @@ QRectF ChannelGraphItem::boundingRect() const
 		// shift by 0.5 to have sharp lines
 		cachedRect.setLeft(0.5);
 		cachedRect.setTop(0.5);
-		cachedRect.setWidth(width + 2 * margin);
+		cachedRect.setWidth(width + 2 * DPIHelper::scale(margin));
-		cachedRect.setHeight(height + 2 * margin);
+		cachedRect.setHeight(height + 2 * DPIHelper::scale(margin));
 	}
 
 	return cachedRect;
@@ -62,6 +63,6 @@ void ChannelGraphItem::paint(QPainter* painter, QColor color)
 	gradient.setColorAt(0, QColor(255, 255, 255));
 	gradient.setColorAt(1, color);
 	painter->setBrush(gradient);
-	painter->drawRoundedRect(rect, margin, margin);
+	painter->drawRoundedRect(rect, DPIHelper::scale(margin), DPIHelper::scale(margin));
 	painter->drawText(rect.translated(1, -1), Qt::AlignCenter, name);
 }

Editor/widgets/ChannelGraphScene.cpp

@@ -19,6 +19,7 @@
 
 #include <QGraphicsItem>
 
+#include "Editor/helpers/DPIHelper.h"
 #include "ChannelGraphScene.h"
 
 ChannelGraphScene::ChannelGraphScene(QWidget* parent)
@@ -32,8 +33,8 @@ QPointF ChannelGraphScene::getNextChannelPoint(QGraphicsItem* lastItem, bool out
 	if (lastItem != NULL)
 	{
 		QRectF lastRect = lastItem->sceneBoundingRect();
-		x = lastRect.left() + lastRect.width() + 1 + 10;
+		x = lastRect.left() + lastRect.width() + 1 + DPIHelper::scale(10);
 	}
 
-	return QPointF(x, output ? 50 : 0);
+	return QPointF(x, output ? DPIHelper::scale(50) : 0);
 }

Editor/widgets/CompactToolBar.cpp

@@ -17,14 +17,14 @@
     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
+#include "Editor/helpers/DPIHelper.h"
 #include "CompactToolBar.h"
 
 CompactToolBar::CompactToolBar(QWidget* parent)
 	: QToolBar(parent)
 {
-	setMinimumHeight(1);
+	setMinimumHeight(DPIHelper::scale(33));
 	setOrientation(Qt::Vertical);
-	setIconSize(QSize(16, 16));
 }
 
 QSize CompactToolBar::sizeHint() const

Editor/widgets/FrequencyPlotScene.cpp

@@ -17,6 +17,7 @@
     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
+#include "Editor/helpers/DPIHelper.h"
 #include "FrequencyPlotView.h"
 #include "FrequencyPlotScene.h"
 
@@ -37,6 +38,9 @@ vector<double> FrequencyPlotScene::bandsVar;
 FrequencyPlotScene::FrequencyPlotScene(QObject* parent)
 	: QGraphicsScene(parent)
 {
+	zoomX = DPIHelper::scaleZoom(1.0);
+	zoomY = DPIHelper::scaleZoom(1.0);
+
 	updateSceneRect();
 }
 
@@ -83,14 +87,17 @@ double FrequencyPlotScene::getZoomY() const
 
 void FrequencyPlotScene::setZoom(double zoomX, double zoomY)
 {
-	this->zoomX = zoomX;
+	if (zoomX != this->zoomX || zoomY != this->zoomY)
-	this->zoomY = zoomY;
-	updateSceneRect();
-
-	for (QGraphicsItem* item : items())
 	{
-		FrequencyPlotItem* plotItem = (FrequencyPlotItem*)item;
+		this->zoomX = zoomX;
-		plotItem->updatePos();
+		this->zoomY = zoomY;
+		updateSceneRect();
+
+		for (QGraphicsItem* item : items())
+		{
+			FrequencyPlotItem* plotItem = (FrequencyPlotItem*)item;
+			plotItem->updatePos();
+		}
 	}
 }
 

Editor/widgets/FrequencyPlotScene.h

@@ -55,7 +55,7 @@ protected:
 private:
 	void updateSceneRect();
 
-	double zoomX = 1.0;
+	double zoomX;
-	double zoomY = 1.0;
+	double zoomY;
 	int bandCount = -1;
 };

Editor/widgets/FrequencyPlotVRuler.cpp

@@ -19,6 +19,7 @@
 
 #include <QWheelEvent>
 
+#include "Editor/helpers/DPIHelper.h"
 #include "FrequencyPlotView.h"
 #include "FrequencyPlotScene.h"
 #include "FrequencyPlotVRuler.h"
@@ -37,7 +38,7 @@ void FrequencyPlotVRuler::paintEvent(QPaintEvent*)
 
 	QPointF topLeft = view->mapToScene(0, 0);
 	QPointF bottomRight = view->mapToScene(view->viewport()->width(), view->viewport()->height());
-	double dbStep = abs(s->yToDb(0) - s->yToDb(30));
+	double dbStep = abs(s->yToDb(0) - s->yToDb(DPIHelper::scale(30)));
 
 	double dbBase = pow(10, floor(log10(dbStep)));
 	if (dbStep >= 5 * dbBase)

Editor/widgets/FrequencyPlotView.cpp

@@ -21,6 +21,7 @@
 #include <QWheelEvent>
 #include <QScrollBar>
 
+#include "Editor/helpers/DPIHelper.h"
 #include "FrequencyPlotItem.h"
 #include "FrequencyPlotView.h"
 
@@ -29,7 +30,7 @@ using namespace std;
 FrequencyPlotView::FrequencyPlotView(QWidget* parent)
 	: QGraphicsView(parent)
 {
-	setViewportMargins(32, 0, 0, 20);
+	setViewportMargins(DPIHelper::scale(32), 0, 0, DPIHelper::scale(20));
 	hRuler = new FrequencyPlotHRuler(this);
 	vRuler = new FrequencyPlotVRuler(this);
 	hRuler->setMouseTracking(true);
@@ -60,7 +61,7 @@ void FrequencyPlotView::drawBackground(QPainter* painter, const QRectF& drawRect
 	FrequencyPlotScene* s = scene();
 	QPointF topLeft = mapToScene(0, 0);
 	QPointF bottomRight = mapToScene(viewport()->width(), viewport()->height());
-	double dbStep = abs(s->yToDb(0) - s->yToDb(30));
+	double dbStep = abs(s->yToDb(0) - s->yToDb(DPIHelper::scale(30)));
 
 	double dbBase = pow(10, floor(log10(dbStep)));
 	if (dbStep >= 5 * dbBase)
@@ -176,6 +177,7 @@ void FrequencyPlotView::setScrollOffsets(int x, int y)
 
 void FrequencyPlotView::wheelEvent(QWheelEvent* event)
 {
+	event->accept();
 	int delta = event->angleDelta().y();
 	zoom(delta, delta, event->x(), event->y());
 }

Editor/widgets/ResizeCorner.cpp

@@ -19,13 +19,20 @@
 
 #include <QMouseEvent>
 
+#include "Editor/helpers/DPIHelper.h"
 #include "ResizeCorner.h"
 
 ResizeCorner::ResizeCorner(FilterTable* filterTable, QSize minimumSize, QSize maximumSize, std::function<QSize()> getFunc, std::function<void(QSize)> setFunc, QWidget* parent)
 	: QLabel(parent), minimumSize(minimumSize), maximumSize(maximumSize), getFunc(getFunc), setFunc(setFunc), filterTable(filterTable)
 {
-	setPixmap(QPixmap(":/icons/resize_corner.png"));
+	QIcon icon(":/icons/resize_corner.ico");
+	QSize desiredSize = DPIHelper::scale(QSize(16, 16));
+	QSize actualSize = icon.actualSize(desiredSize);
+	QPixmap pixmap = icon.pixmap(actualSize);
+	setPixmap(pixmap);
 	setCursor(Qt::SizeFDiagCursor);
+	// move icon to lower right if it does not fill the full area
+	setContentsMargins(desiredSize.width() - actualSize.width(), desiredSize.height() - actualSize.height(), 0, 0);
 }
 
 void ResizeCorner::mousePressEvent(QMouseEvent* event)

Release checklist.txt

@@ -4,4 +4,5 @@
 4. Upload EqualizerAPO32-x.exe, EqualizerAPO64-x.exe and EqualizerAPO-src-x.zip to new folder x
 5. Update readme.txt using subversion log
 6. Set EqualizerAPO64-x.exe as new default download
+7. Update URL for tool "Downloads" to https://sourceforge.net/projects/equalizerapo/files/x/
 7. Create tag of trunk in tags/x

Setup/Setup32.nsi

@@ -1,6 +1,6 @@
 
 !define BINPATH "..\Release"
-!define BINPATH_EDITOR "..\build-Editor-Desktop_Qt_5_5_MSVC2013_32bit-Release\release"
+!define BINPATH_EDITOR "..\build-Editor-Desktop_Qt_5_7_MSVC2013_32bit-Release\release"
 !define LIBPATH "lib32"
 
 !include "Setup.nsi"

Setup/Setup64.nsi

@@ -1,6 +1,6 @@
 
 !define BINPATH "..\x64\Release"
-!define BINPATH_EDITOR "..\build-Editor-Desktop_Qt_5_5_MSVC2013_64bit-Release\release"
+!define BINPATH_EDITOR "..\build-Editor-Desktop_Qt_5_7_MSVC2013_64bit-Release\release"
 !define LIBPATH "lib64"
 
 !include "Setup.nsi"