[calamares] Make debug-window available to QML

- Add a toggle() to the debug-window manager, for convenience
- Make the manager available to QML
- Use the debug-window manager (code imported from KaOS)

src/calamares/CalamaresWindow.cpp

@@ -32,6 +32,8 @@
 #include <QFileInfo>
 #include <QLabel>
 #ifdef WITH_QML
+#include <QQmlContext>
+#include <QQmlEngine>
 #include <QQuickItem>
 #include <QQuickWidget>
 #endif
@@ -240,7 +242,7 @@ setDimension( QQuickWidget* w, Qt::Orientation o, int desiredWidth )
 
 
 static QWidget*
-getQmlSidebar( Calamares::DebugWindowManager*,
+getQmlSidebar( Calamares::DebugWindowManager* debug,
                Calamares::ViewManager*,
                QWidget* parent,
                Qt::Orientation o,
@@ -248,6 +250,11 @@ getQmlSidebar( Calamares::DebugWindowManager*,
 {
     CalamaresUtils::registerQmlModels();
     QQuickWidget* w = new QQuickWidget( parent );
+    if ( debug )
+    {
+        w->engine()->rootContext()->setContextProperty( "debug", debug );
+    }
+
     w->setSource( QUrl(
         CalamaresUtils::searchQmlFile( CalamaresUtils::QmlSearch::Both, QStringLiteral( "calamares-sidebar" ) ) ) );
     setDimension( w, o, desiredWidth );
@@ -255,7 +262,7 @@ getQmlSidebar( Calamares::DebugWindowManager*,
 }
 
 static QWidget*
-getQmlNavigation( Calamares::DebugWindowManager*,
+getQmlNavigation( Calamares::DebugWindowManager* debug,
                   Calamares::ViewManager*,
                   QWidget* parent,
                   Qt::Orientation o,
@@ -263,6 +270,10 @@ getQmlNavigation( Calamares::DebugWindowManager*,
 {
     CalamaresUtils::registerQmlModels();
     QQuickWidget* w = new QQuickWidget( parent );
+    if ( debug )
+    {
+        w->engine()->rootContext()->setContextProperty( "debug", debug );
+    }
     w->setSource( QUrl(
         CalamaresUtils::searchQmlFile( CalamaresUtils::QmlSearch::Both, QStringLiteral( "calamares-navigation" ) ) ) );
     setDimension( w, o, desiredWidth );

src/calamares/DebugWindow.cpp

@@ -274,5 +274,11 @@ DebugWindowManager::show( bool visible )
     }
 }
 
+void
+DebugWindowManager::toggle()
+{
+    show( !m_visible );
+}
+
 
 }  // namespace Calamares

src/calamares/DebugWindow.h

@@ -77,6 +77,7 @@ public Q_SLOTS:
     bool enabled() const;
     bool visible() const { return m_visible; }
     void show( bool visible );
+    void toggle();
 
 signals:
     void visibleChanged( bool visible );

src/calamares/calamares-sidebar.qml

@@ -1,6 +1,7 @@
 /* Sample of QML progress tree.
 
    SPDX-FileCopyrightText: 2020 Adriaan de Groot <groot@kde.org>
+   SPDX-FileCopyrightText: 2021 Anke Boersma <demm@kaosx.us>
    SPDX-License-Identifier: GPL-3.0-or-later
 
 
@@ -59,5 +60,29 @@ Rectangle {
         Item {
             Layout.fillHeight: true;
         }
+
+        Rectangle {
+            Layout.fillWidth: true;
+            height: 35
+            Layout.alignment: Qt.AlignHCenter | Qt.AlignBottom
+            color: Branding.styleString( mouseArea.containsMouse ? Branding.SidebarTextHighlight : Branding.SidebarBackground);
+            visible: debug.enabled
+
+            MouseArea {
+                id: mouseArea
+                anchors.fill: parent;
+                cursorShape: Qt.PointingHandCursor
+                hoverEnabled: true
+                Text {
+                    anchors.verticalCenter: parent.verticalCenter;
+                    x: parent.x + 4;
+                    text: qsTr("Show debug information")
+                    color: Branding.styleString( mouseArea.containsMouse ? Branding.SidebarTextSelect : Branding.SidebarBackground );
+                    font.pointSize : 9
+                }
+
+                onClicked: debug.toggle()
+            }
+        }
     }
 }