Set splitter sizes based on proportion settable in the dock widget

examples/autohide/mainwindow.cpp

@@ -46,7 +46,7 @@ CMainWindow::CMainWindow(QWidget *parent)
     TableDockWidget->setMinimumSizeHintMode(CDockWidget::MinimumSizeHintFromDockWidget);
     TableDockWidget->resize(250, 150);
     TableDockWidget->setMinimumSize(200,150);
-    TableDockWidget->setFeature(CDockWidget::DockWidgetDeleteOnClose, true);
+    TableDockWidget->setDefaultOverlayDockProportion(2);
     DockManager->addOverlayDockWidget(CDockWidgetSideTab::SideTabBarArea::Left, TableDockWidget);
     ui->menuView->addAction(TableDockWidget->toggleViewAction());
 

src/DockWidget.cpp

@@ -95,6 +95,7 @@ struct DockWidgetPrivate
 	QList<QAction*> TitleBarActions;
 	CDockWidget::eMinimumSizeHintMode MinimumSizeHintMode = CDockWidget::MinimumSizeHintFromDockWidget;
 	WidgetFactory* Factory = nullptr;
+	int DefaultOverlayDockProportion = 4;
 	
 	/**
 	 * Private data constructor
@@ -1133,6 +1134,18 @@ bool CDockWidget::isCurrentTab() const
 }
 
 
+//============================================================================
+void CDockWidget::setDefaultOverlayDockProportion(int Proportion)
+{
+	d->DefaultOverlayDockProportion = Proportion;
+}
+
+int CDockWidget::DefaultOverlayDockProportion() const
+{
+	return d->DefaultOverlayDockProportion;
+}
+
+
 //============================================================================
 void CDockWidget::raise()
 {

src/DockWidget.h

@@ -511,6 +511,18 @@ public:
      */
     bool isCurrentTab() const;
 
+	/*
+	 * Set default dock proportion when overlayed
+	 * 4 is a quarter of the size, 2 is half the size, 1 is the entire size
+	 */
+	void setDefaultOverlayDockProportion(int Proportion);
+
+	/*
+	 * Set default dock proportion when overlayed
+	 * 4 is a quarter of the size, 2 is half the size, 1 is the entire size
+	 */
+	int DefaultOverlayDockProportion() const;
+
 public: // reimplements QFrame -----------------------------------------------
     /**
      * Emits titleChanged signal if title change event occurs

src/OverlayDockContainer.cpp

@@ -188,6 +188,7 @@ COverlayDockContainer::COverlayDockContainer(CDockWidget* DockWidget, CDockWidge
 	COverlayDockContainer(DockWidget->dockManager(), area, parent)
 {
 	addDockWidget(DockWidget);
+	setDockSizeProportion(DockWidget->DefaultOverlayDockProportion());
 }
 
 //============================================================================
@@ -234,30 +235,6 @@ void COverlayDockContainer::addDockWidget(CDockWidget* DockWidget)
         OldDockArea->removeDockWidget(DockWidget);
     }
 	d->DockArea->addDockWidget(DockWidget);
-
-    const auto dockContainerParent = parentContainer();
-    const auto rootSplitter = dockContainerParent->rootSplitter();
-    const auto rect = rootSplitter->frameGeometry();
-    const auto dockWidth = DockWidget->sizeHint().width();
-    switch (d->Area)
-    {
-        case CDockWidgetSideTab::Left:
-        {
-            d->Splitter->setSizes({ dockWidth, rect.width() - dockWidth });
-			break;
-        }
-        case CDockWidgetSideTab::Right: 
-        {
-            d->Splitter->setSizes({ rect.width() - dockWidth, dockWidth });
-			break;
-        }
-        case CDockWidgetSideTab::Bottom:
-        { 
-            d->Splitter->setSizes({ rect.width() - dockWidth, dockWidth });
-			break;
-        }
-    }
-
 	d->DockWidget->sideTabWidget()->updateOrientationAndSpacing(d->Area);
 
 	updateSize();
@@ -265,6 +242,28 @@ void COverlayDockContainer::addDockWidget(CDockWidget* DockWidget)
 }
 
 
+//============================================================================
+void COverlayDockContainer::setDockSizeProportion(int SplitterProportion)
+{
+    switch (d->Area)
+    {
+        case CDockWidgetSideTab::Left:
+        {
+            d->Splitter->setSizes({ INT_MAX / SplitterProportion, INT_MAX - INT_MAX / SplitterProportion });
+			break;
+        }
+        case CDockWidgetSideTab::Right: 
+			[[fallthrough]];
+        case CDockWidgetSideTab::Bottom:
+        { 
+            d->Splitter->setSizes({ INT_MAX - INT_MAX / SplitterProportion, INT_MAX / SplitterProportion });
+			break;
+        }
+    }
+
+}
+
+
 //============================================================================
 CDockWidgetSideTab::SideTabBarArea COverlayDockContainer::sideTabBarArea() const
 {

src/OverlayDockContainer.h

@@ -95,6 +95,14 @@ public:
 	 */
 	void addDockWidget(CDockWidget* DockWidget);
 
+	/*
+	 * Set default splitter sizes. Don't use when restoring state
+	 * As we want the size from the XML
+	 * Takes an int which determines the size proportion of the child dock
+	 * E.g. 4 is a quarter of the size, 2 is half the size and 1 is the entire size of the container
+	 */
+	void setDockSizeProportion(int SplitterProportion = 4);
+
 	/**
 	 * Returns the side tab bar area of this overlay dock container
 	 */