refactor: use .ui to replace manual layout for aboutdialog

app/aboutdialog.cpp

@@ -3,6 +3,7 @@
 // SPDX-License-Identifier: MIT
 
 #include "aboutdialog.h"
+#include "ui_aboutdialog.h"
 
 #include <QAbstractButton>
 #include <QDialogButtonBox>
@@ -17,16 +18,10 @@
 using namespace Qt::Literals::StringLiterals;
 
 AboutDialog::AboutDialog(QWidget *parent)
-    : QDialog(parent)
-    , m_tabWidget(new QTabWidget)
-    , m_buttonBox(new QDialogButtonBox)
-    , m_helpTextEdit(new QTextBrowser)
-    , m_aboutTextEdit(new QTextBrowser)
-    , m_specialThanksTextEdit(new QTextBrowser)
-    , m_licenseTextEdit(new QTextBrowser)
-    , m_3rdPartyLibsTextEdit(new QTextBrowser)
+    : QDialog(parent), ui(new Ui::AboutDialog)
 {
-    this->setWindowTitle(tr("About"));
+    ui->setupUi(this);
+    setWindowFlag(Qt::WindowContextHelpButtonHint, false);
 
     const QStringList helpStr {
         u"<p>%1</p>"_s.arg(tr("Launch application with image file path as argument to load the file.")),
@@ -137,42 +132,30 @@ SOFTWARE.
         u"</ul>"_s
     };
 
-    m_helpTextEdit->setText(helpStr.join('\n'));
+    ui->m_helpTextEdit->setText(helpStr.join('\n'));
 
-    m_aboutTextEdit->setText(aboutStr.join('\n'));
-    m_aboutTextEdit->setOpenExternalLinks(true);
+    ui->m_aboutTextEdit->setText(aboutStr.join('\n'));
+    ui->m_aboutTextEdit->setOpenExternalLinks(true);
 
-    m_specialThanksTextEdit->setText(specialThanksStr.join('\n'));
-    m_specialThanksTextEdit->setOpenExternalLinks(true);
+    ui->m_specialThanksTextEdit->setText(specialThanksStr.join('\n'));
+    ui->m_specialThanksTextEdit->setOpenExternalLinks(true);
 
-    m_licenseTextEdit->setText(licenseStr.join('\n').arg(qApp->applicationDisplayName(), mitLicense));
+    ui->m_licenseTextEdit->setText(licenseStr.join('\n').arg(qApp->applicationDisplayName(), mitLicense));
 
-    m_3rdPartyLibsTextEdit->setText(thirdPartyLibsStr.join('\n').arg(u"<i>%1</i>"_s).arg(qApp->applicationDisplayName()));
-    m_3rdPartyLibsTextEdit->setOpenExternalLinks(true);
+    ui->m_3rdPartyLibsTextEdit->setText(thirdPartyLibsStr.join('\n').arg(u"<i>%1</i>"_s).arg(qApp->applicationDisplayName()));
+    ui->m_3rdPartyLibsTextEdit->setOpenExternalLinks(true);
 
-    m_tabWidget->addTab(m_helpTextEdit, tr("&Help"));
-    m_tabWidget->addTab(m_aboutTextEdit, tr("&About"));
-    m_tabWidget->addTab(m_specialThanksTextEdit, tr("&Special Thanks"));
-    m_tabWidget->addTab(m_licenseTextEdit, tr("&License"));
-    m_tabWidget->addTab(m_3rdPartyLibsTextEdit, tr("&Third-party Libraries"));
-
-    m_buttonBox->setStandardButtons(QDialogButtonBox::Close);
-    connect(m_buttonBox, QOverload<QAbstractButton *>::of(&QDialogButtonBox::clicked), this, [this](){
+    connect(ui->m_buttonBox, QOverload<QAbstractButton *>::of(&QDialogButtonBox::clicked), this, [this](QAbstractButton * btn){
+        Q_UNUSED(btn)
         this->close();
     });
 
-    setLayout(new QVBoxLayout);
-
-    layout()->addWidget(m_tabWidget);
-    layout()->addWidget(m_buttonBox);
-
     setMinimumSize(361, 161); // not sure why it complain "Unable to set geometry"
-    setWindowFlag(Qt::WindowContextHelpButtonHint, false);
 }
 
 AboutDialog::~AboutDialog()
 {
-
+    delete ui;
 }
 
 QSize AboutDialog::sizeHint() const

app/aboutdialog.h

@@ -7,10 +7,11 @@
 
 #include <QDialog>
 
+
 QT_BEGIN_NAMESPACE
-class QTextBrowser;
-class QTabWidget;
-class QDialogButtonBox;
+namespace Ui {
+class AboutDialog;
+}
 QT_END_NAMESPACE
 
 class AboutDialog : public QDialog
@@ -23,14 +24,7 @@ public:
     QSize sizeHint() const override;
 
 private:
-    QTabWidget * m_tabWidget = nullptr;
-    QDialogButtonBox * m_buttonBox = nullptr;
-
-    QTextBrowser * m_helpTextEdit = nullptr;
-    QTextBrowser * m_aboutTextEdit = nullptr;
-    QTextBrowser * m_specialThanksTextEdit = nullptr;
-    QTextBrowser * m_licenseTextEdit = nullptr;
-    QTextBrowser * m_3rdPartyLibsTextEdit = nullptr;
+    QT_PREPEND_NAMESPACE(Ui::AboutDialog) *ui;
 };
 
 #endif // ABOUTDIALOG_H

app/aboutdialog.ui

@@ -0,0 +1,86 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>AboutDialog</class>
+ <widget class="QDialog" name="AboutDialog">
+  <property name="windowModality">
+   <enum>Qt::NonModal</enum>
+  </property>
+  <property name="windowTitle">
+   <string>About</string>
+  </property>
+  <property name="minimumSize">
+   <size>
+    <width>361</width>
+    <height>161</height>
+   </size>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <widget class="QTabWidget" name="m_tabWidget">
+     <property name="currentIndex">
+      <number>0</number>
+     </property>
+     <widget class="QWidget" name="helpTab">
+      <attribute name="title">
+       <string>&amp;Help</string>
+      </attribute>
+      <layout class="QVBoxLayout" name="helpTabLayout">
+       <item>
+        <widget class="QTextBrowser" name="m_helpTextEdit"/>
+       </item>
+      </layout>
+     </widget>
+     <widget class="QWidget" name="aboutTab">
+      <attribute name="title">
+       <string>&amp;About</string>
+      </attribute>
+      <layout class="QVBoxLayout" name="aboutTabLayout">
+       <item>
+        <widget class="QTextBrowser" name="m_aboutTextEdit"/>
+       </item>
+      </layout>
+     </widget>
+     <widget class="QWidget" name="specialThanksTab">
+      <attribute name="title">
+       <string>&amp;Special Thanks</string>
+      </attribute>
+      <layout class="QVBoxLayout" name="specialThanksTabLayout">
+       <item>
+        <widget class="QTextBrowser" name="m_specialThanksTextEdit"/>
+       </item>
+      </layout>
+     </widget>
+     <widget class="QWidget" name="licenseTab">
+      <attribute name="title">
+       <string>&amp;License</string>
+      </attribute>
+      <layout class="QVBoxLayout" name="licenseTabLayout">
+       <item>
+        <widget class="QTextBrowser" name="m_licenseTextEdit"/>
+       </item>
+      </layout>
+     </widget>
+     <widget class="QWidget" name="thirdPartyLibsTab">
+      <attribute name="title">
+       <string>&amp;Third-party Libraries</string>
+      </attribute>
+      <layout class="QVBoxLayout" name="thirdPartyLibsTabLayout">
+       <item>
+        <widget class="QTextBrowser" name="m_3rdPartyLibsTextEdit"/>
+       </item>
+      </layout>
+     </widget>
+    </widget>
+   </item>
+   <item>
+    <widget class="QDialogButtonBox" name="m_buttonBox">
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Close</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

app/settingsdialog.h

@@ -5,7 +5,6 @@
 #ifndef SETTINGSDIALOG_H
 #define SETTINGSDIALOG_H
 
-#include <QObject>
 #include <QDialog>
 
 QT_BEGIN_NAMESPACE