initialstart: Add dark mode switch

initialstart/modules/prepare/CMakeLists.txt

@@ -9,6 +9,8 @@ set(prepareplugin_SRCS
     ${DBUS_SRCS}
 )
 
+kconfig_add_kcfg_files(prepareplugin_SRCS colorssettings.kcfgc GENERATE_MOC)
+
 add_library(prepareplugin ${prepareplugin_SRCS})
 
 target_link_libraries(prepareplugin

initialstart/modules/prepare/colorssettings.kcfg

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<kcfg xmlns="http://www.kde.org/standards/kcfg/1.0"
+      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+      xsi:schemaLocation="http://www.kde.org/standards/kcfg/1.0
+      http://www.kde.org/standards/kcfg/1.0/kcfg.xsd" >
+  <kcfgfile name="kdeglobals"/>
+  <group name="General">
+    <entry name="colorScheme" key="ColorScheme" type="String">
+      <label>Color scheme name</label>
+      <default>BreezeLight</default>
+    </entry>
+    <entry name="accentColor" key="AccentColor" type="Color">
+      <label>Accent color</label>
+      <default>transparent</default>
+    </entry>
+    <entry name="lastUsedCustomAccentColor" key="LastUsedCustomAccentColor" type="Color">
+      <label>The last used custom accent color before user switched to wallpaper generated color or default color</label>
+      <default>transparent</default>
+    </entry>
+    <entry name="accentColorFromWallpaper" key="accentColorFromWallpaper" type="Bool">
+      <label>Whether accent color from wallpaper should be applied</label>
+      <default>false</default>
+    </entry>
+  </group>
+</kcfg>

initialstart/modules/prepare/colorssettings.kcfgc

@@ -0,0 +1,7 @@
+File=colorssettings.kcfg
+ClassName=ColorsSettings
+Mutators=true
+DefaultValueGetters=true
+GenerateProperties=true
+ParentInConstructor=true
+Notifiers=true

initialstart/modules/prepare/package/contents/ui/main.qml

@@ -113,6 +113,24 @@ Item {
                     onCurrentValueChanged: Prepare.PrepareUtil.scaling = parseInt(currentValue.substring(0, currentValue.length - 1));
                 }
             }
+
+            FormCard.FormCard {
+                id: darkThemeCard
+                maximumWidth: root.cardWidth
+
+                Layout.alignment: Qt.AlignTop | Qt.AlignHCenter
+
+                FormCard.FormSwitchDelegate {
+                    id: darkThemeSwitch
+                    text: i18n("Dark Theme")
+                    checked: Prepare.PrepareUtil.usingDarkTheme
+                    onCheckedChanged: {
+                        if (checked !== Prepare.PrepareUtil.usingDarkTheme) {
+                            Prepare.PrepareUtil.usingDarkTheme = checked;
+                        }
+                    }
+                }
+            }
         }
     }
 }

initialstart/modules/prepare/prepareutil.cpp

@@ -13,6 +13,7 @@
 
 PrepareUtil::PrepareUtil(QObject *parent)
     : QObject{parent}
+    , m_colorsSettings{new ColorsSettings(this)}
 {
     m_brightnessInterface =
         new org::kde::Solid::PowerManagement::Actions::BrightnessControl(QStringLiteral("org.kde.Solid.PowerManagement"),
@@ -57,6 +58,9 @@ PrepareUtil::PrepareUtil(QObject *parent)
     connect(m_brightnessInterfaceWatcher, &QDBusServiceWatcher::serviceUnregistered, this, [this]() -> void {
         Q_EMIT brightnessAvailableChanged();
     });
+
+    // set property initially
+    m_usingDarkTheme = m_colorsSettings->colorScheme() == "BreezeDark";
 }
 
 int PrepareUtil::scaling() const
@@ -109,6 +113,24 @@ bool PrepareUtil::brightnessAvailable() const
     return m_brightnessInterface->isValid();
 }
 
+bool PrepareUtil::usingDarkTheme() const
+{
+    return m_usingDarkTheme;
+}
+
+void PrepareUtil::setUsingDarkTheme(bool usingDarkTheme)
+{
+    // use plasma-apply-colorscheme since it has logic for notifying the shell of changes
+    if (usingDarkTheme) {
+        QProcess::execute("plasma-apply-colorscheme", {QStringLiteral("BreezeDark")});
+    } else {
+        QProcess::execute("plasma-apply-colorscheme", {QStringLiteral("BreezeLight")});
+    }
+
+    m_usingDarkTheme = usingDarkTheme;
+    Q_EMIT usingDarkThemeChanged();
+}
+
 void PrepareUtil::fetchBrightness()
 {
     QDBusPendingReply<int> reply = m_brightnessInterface->brightness();

initialstart/modules/prepare/prepareutil.h

@@ -9,6 +9,7 @@
 #include <kscreen/config.h>
 
 #include "brightnesscontrolinterface.h"
+#include "colorssettings.h"
 
 class PrepareUtil : public QObject
 {
@@ -18,6 +19,7 @@ class PrepareUtil : public QObject
     Q_PROPERTY(int brightness READ brightness WRITE setBrightness NOTIFY brightnessChanged);
     Q_PROPERTY(int maxBrightness READ maxBrightness NOTIFY maxBrightnessChanged)
     Q_PROPERTY(bool brightnessAvailable READ brightnessAvailable NOTIFY brightnessAvailableChanged)
+    Q_PROPERTY(bool usingDarkTheme READ usingDarkTheme WRITE setUsingDarkTheme NOTIFY usingDarkThemeChanged)
 
 public:
     PrepareUtil(QObject *parent = nullptr);
@@ -34,11 +36,15 @@ public:
 
     bool brightnessAvailable() const;
 
+    bool usingDarkTheme() const;
+    void setUsingDarkTheme(bool usingDarkTheme);
+
 Q_SIGNALS:
     void scalingChanged();
     void brightnessChanged();
     void maxBrightnessChanged();
     void brightnessAvailableChanged();
+    void usingDarkThemeChanged();
 
 private Q_SLOTS:
     void fetchBrightness();
@@ -48,7 +54,9 @@ private:
     int m_scaling;
     int m_brightness;
     int m_maxBrightness;
+    bool m_usingDarkTheme;
 
+    ColorsSettings *m_colorsSettings;
     KScreen::ConfigPtr m_config;
     org::kde::Solid::PowerManagement::Actions::BrightnessControl *m_brightnessInterface;
     QDBusServiceWatcher *m_brightnessInterfaceWatcher;