feat: Preferences dialog view upgrade

src/ApplicationSettings.cpp

@@ -18,6 +18,7 @@
 
 #include "ApplicationSettings.h"
 
+#include <QTemporaryFile>
 #include <QApplication>
 #include <QFont>
 
@@ -36,8 +37,45 @@ ApplicationSetting<type> name{#group "/" #name, default};\
 
 
 ApplicationSettings::ApplicationSettings(QObject *parent)
-    : QSettings{parent}
+    : QSettings(parent)
+{ }
+
+ApplicationSettings::ApplicationSettings(QTemporaryFile *tempFile, QObject *parent)
+    : QSettings(tempFile->fileName(), QSettings::NativeFormat, parent)
+{
+    tempFile->setParent(this);
+}
+
+void ApplicationSettings::fillFrom(ApplicationSettings *other)
+{
+    if (!other) return;
+
+    const auto meta = metaObject();
+
+    for (auto i = meta->propertyOffset(); i < meta->propertyCount(); ++i)
+    {
+        const auto property = meta->property(i);
+
+        if (property.isWritable() && property.isReadable())
+            property.write(this, property.read(other));
+    }
+}
+
+bool ApplicationSettings::isEquals(ApplicationSettings *other) const
 {
+    if (!other) return false;
+
+    const auto meta = metaObject();
+
+    for (auto i = meta->propertyOffset(); i < meta->propertyCount(); ++i)
+    {
+        const auto property = meta->property(i);
+
+        if (property.read(this) != property.read(other))
+            return false;
+    }
+
+    return true;
 }
 
 CREATE_SETTING(Gui, ShowMenuBar, showMenuBar, bool, true)

src/ApplicationSettings.h

@@ -26,6 +26,7 @@
 #include <QString>
 #include <QMetaEnum>
 
+class QTemporaryFile;
 
 template<typename T>
 class ApplicationSetting
@@ -53,39 +54,54 @@ class ApplicationSetting
 };
 
 
-#define DEFINE_SETTING(name, lname, type)\
-public:\
-    type lname() const;\
-public slots:\
-    void set##name(type lname);\
-Q_SIGNAL\
-    void lname##Changed(type lname);\
-
+#define DEFINE_SETTING(name, lname, type) \
+    Q_PROPERTY(type lname READ lname WRITE set##name NOTIFY lname##Changed FINAL) \
+    public: \
+        type lname() const; \
+    public slots: \
+        void set##name(type lname); \
+    Q_SIGNAL \
+        void lname##Changed(type lname);
 
 class ApplicationSettings : public QSettings
 {
     Q_OBJECT
-
 public:
-    explicit ApplicationSettings(QObject *parent = nullptr);
-
-    enum DefaultDirectoryBehaviorEnum {
+    enum DefaultDirectoryBehaviorEnum
+    {
         FollowCurrentDocument,
         RememberLastUsed,
         HardCoded
     };
     Q_ENUM(DefaultDirectoryBehaviorEnum)
 
+public:
+    explicit ApplicationSettings(QObject *parent = nullptr);
+
+    /**
+     * @brief Create temporary instance with default settings.
+     * @param tempFile Temporary file instance to be used.
+     * @warning Ensure tempFile->open() was called before passing it.
+     * @note The instance takes ownership of tempFile.
+     */
+    ApplicationSettings(QTemporaryFile *tempFile, QObject *parent = nullptr);
+
+    inline void copyTo(ApplicationSettings *other) const {
+        other->fillFrom(const_cast<ApplicationSettings*>(this));
+    }
+    void fillFrom(ApplicationSettings *other);
+    bool isEquals(ApplicationSettings *other) const;
+
     template <typename T>
-    T get(const char *key, const T &defaultValue) const
+    inline T get(const char *key, const T &defaultValue) const
     { return value(QLatin1String(key), defaultValue).template value<T>(); }
 
     template <typename T>
-    T get(const ApplicationSetting<T> &setting) const
+    inline T get(const ApplicationSetting<T> &setting) const
     { return get(setting.key(), setting.getDefault()); }
 
     template <typename T>
-    void set(const ApplicationSetting<T> &setting, const T &value)
+    inline void set(const ApplicationSetting<T> &setting, const T &value)
     { setValue(QLatin1String(setting.key()), value); }
 
     DEFINE_SETTING(ShowMenuBar, showMenuBar, bool)

src/CMakeLists.txt

@@ -125,6 +125,17 @@ qt_add_executable(NotepadNext
 	decorators/SurroundSelection.h
 	decorators/URLFinder.cpp
 	decorators/URLFinder.h
+	dialogs/Preferences/PreferencesCategoryListModel.cpp
+	dialogs/Preferences/PreferencesCategoryListModel.h
+	dialogs/Preferences/BehaviorCategoryItem.cpp
+	dialogs/Preferences/BehaviorCategoryItem.h
+	dialogs/Preferences/PreferencesViewUtils.h
+	dialogs/Preferences/PreferencesCategoryItem.h
+	dialogs/Preferences/PreferencesCategoryItemT.h
+	dialogs/Preferences/AppearanceCategoryItem.cpp
+	dialogs/Preferences/AppearanceCategoryItem.h
+	dialogs/PreferencesDialog.cpp
+	dialogs/PreferencesDialog.h
 	dialogs/ColumnEditorDialog.cpp
 	dialogs/ColumnEditorDialog.h
 	dialogs/ColumnEditorDialog.ui
@@ -143,9 +154,9 @@ qt_add_executable(NotepadNext
 	dialogs/MainWindow.cpp
 	dialogs/MainWindow.h
 	dialogs/MainWindow.ui
-	dialogs/PreferencesDialog.cpp
-	dialogs/PreferencesDialog.h
-	dialogs/PreferencesDialog.ui
+
+
+
 	docks/DebugLogDock.cpp
 	docks/DebugLogDock.h
 	docks/DebugLogDock.ui

src/dialogs/MainWindow.cpp

@@ -719,12 +719,15 @@ MainWindow::MainWindow(NotepadNextApplication *app) :
     languageActionGroup->setExclusive(true);
 
     connect(ui->actionPreferences, &QAction::triggered, this, [=] {
-        PreferencesDialog *pd = findChild<PreferencesDialog *>(QString(), Qt::FindDirectChildrenOnly);
+        auto pd = findChild<PreferencesDialog*>(QString(), Qt::FindDirectChildrenOnly);
 
         if (pd == Q_NULLPTR) {
             pd = new PreferencesDialog(app->getSettings(), this);
         }
 
+        pd->resize(700, 400);
+        pd->setGeometry(QStyle::alignedRect(Qt::LeftToRight, Qt::AlignCenter, pd->size(), geometry()));
+
         pd->show();
         pd->raise();
         pd->activateWindow();

src/dialogs/Preferences/AppearanceCategoryItem.cpp

@@ -0,0 +1,146 @@
+/*
+ * This file is part of Notepad Next.
+ * Copyright 2026 Justin Dailey
+ *
+ * Notepad Next 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Notepad Next 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 Notepad Next.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+
+#include <QFontComboBox>
+#include <QVBoxLayout>
+#include <QHBoxLayout>
+#include <QGroupBox>
+#include <QComboBox>
+#include <QLabel>
+
+#include "AppearanceCategoryItem.h"
+#include "PreferencesViewUtils.h"
+#include "ApplicationSettings.h"
+
+using namespace Preferences;
+
+namespace
+{
+    inline QGroupBox *WindowAppearanceView(ApplicationSettings *settings)
+    {
+        const auto group = new QGroupBox(QObject::tr("Main window"));
+
+        const auto layout = new QVBoxLayout(group);
+        layout->addWidget(CreateCheckBox(
+            QObject::tr("Show menu bar"),
+            settings,
+            PREFERENCES_BIND_PROPERTY(showMenuBar, ShowMenuBar)
+        ));
+        layout->addWidget(CreateCheckBox(
+            QObject::tr("Show toolbar"),
+            settings,
+            PREFERENCES_BIND_PROPERTY(showToolBar, ShowToolBar)
+        ));
+        layout->addWidget(CreateCheckBox(
+            QObject::tr("Show status bar"),
+            settings,
+            PREFERENCES_BIND_PROPERTY(showStatusBar, ShowStatusBar)
+        ));
+        layout->setContentsMargins(MARGINS_6);
+        layout->setSpacing(SPACING_6);
+
+        return group;
+    }
+
+    inline QGroupBox *FontAppearanceView(ApplicationSettings *settings)
+    {
+        const auto group = new QGroupBox(QObject::tr("Font"));
+
+        const auto familyCombo = new QFontComboBox;
+        familyCombo->setMinimumWidth(120);
+
+        const auto sizeCombo = new QComboBox;
+        sizeCombo->addItems({
+             "4",  "6",  "8",  "9", "10",
+            "11", "12", "14", "16", "18",
+            "20", "22", "24", "26", "28",
+            "36", "48", "72"
+        });
+        sizeCombo->setValidator(new QIntValidator(4, 200, sizeCombo));
+        sizeCombo->setEditable(true);
+
+        const auto wheelSuppressor = new WheelEventSuppressFilter(group);
+        wheelSuppressor->setupFor(familyCombo);
+        wheelSuppressor->setupFor(sizeCombo);
+
+        const auto layout = new QHBoxLayout(group);
+        layout->addWidget(new QLabel(QObject::tr("Family:")));
+        layout->addWidget(familyCombo, 1);
+        layout->addSpacing(3);
+        layout->addWidget(new QLabel(QObject::tr("Size:")));
+        layout->addWidget(sizeCombo);
+        layout->setContentsMargins(MARGINS_6);
+        layout->setSpacing(3);
+
+        familyCombo->setCurrentFont(QFont(settings->fontName()));
+        sizeCombo->setCurrentText(QString("%1").arg(settings->fontSize()));
+
+        QObject::connect(familyCombo, &QFontComboBox::currentFontChanged, settings, [settings](const QFont &font) {
+            settings->setFontName(font.family());
+        });
+        QObject::connect(settings, &ApplicationSettings::fontNameChanged, familyCombo, [familyCombo](const QString &fontName){
+            familyCombo->setCurrentFont(QFont(fontName));
+        });
+
+        QObject::connect(sizeCombo, &QComboBox::currentTextChanged, settings, [settings](const QString &value) {
+            settings->setFontSize(value.toInt());
+        });
+        QObject::connect(settings, &ApplicationSettings::fontSizeChanged, sizeCombo, [sizeCombo](int size) {
+            sizeCombo->setCurrentText(QString("%1").arg(size));
+        });
+
+        return group;
+    }
+
+    inline QGroupBox *EditorAppearanceView(ApplicationSettings *settings)
+    {
+        const auto group = new QGroupBox(QObject::tr("Editor"));
+
+        const auto layout = new QVBoxLayout(group);
+        layout->addWidget(FontAppearanceView(settings));
+        layout->addWidget(CreateCheckBox(
+            QObject::tr("Highlight URLs"),
+            settings,
+            PREFERENCES_BIND_PROPERTY(urlHighlighting, URLHighlighting)
+        ));
+        layout->addWidget(CreateCheckBox(
+            QObject::tr("Show line numbers"),
+            settings,
+            PREFERENCES_BIND_PROPERTY(showLineNumbers, ShowLineNumbers)
+        ));
+        layout->setContentsMargins(MARGINS_6);
+        layout->setSpacing(SPACING_6);
+
+        return group;
+    }
+}
+
+QWidget *AppearanceCategoryItem::contentView(ApplicationSettings *settings) const
+{
+    const auto widget = new QWidget;
+    const auto layout = new QVBoxLayout(widget);
+
+    layout->addWidget(WindowAppearanceView(settings));
+    layout->addWidget(EditorAppearanceView(settings));
+    layout->addStretch(1);
+    layout->setContentsMargins(MARGINS_6);
+    layout->setSpacing(SPACING_6);
+
+    return widget;
+}

src/dialogs/Preferences/AppearanceCategoryItem.h

@@ -0,0 +1,36 @@
+/*
+ * This file is part of Notepad Next.
+ * Copyright 2026 Justin Dailey
+ *
+ * Notepad Next 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Notepad Next 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 Notepad Next.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+
+#ifndef APPEARANCECATEGORYITEM_H
+#define APPEARANCECATEGORYITEM_H
+
+#include "PreferencesCategoryItem.h"
+
+class AppearanceCategoryItem : public PreferencesCategoryItem
+{
+public:
+    AppearanceCategoryItem() = default;
+    virtual ~AppearanceCategoryItem() = default;
+
+    virtual QString title() const override { return QObject::tr("Appearance"); }
+    virtual QString iconPath() const override { return "://icons/paintbrush.svg"; }
+    virtual QWidget *contentView(ApplicationSettings *settings) const override;
+};
+
+#endif // APPEARANCECATEGORYITEM_H