core/window: add min/max size to FloatingWindow

src/window/floatingwindow.hpp

@@ -1,6 +1,8 @@
 #pragma once
 
 #include <qobject.h>
+#include <qproperty.h>
+#include <qsize.h>
 #include <qtmetamacros.h>
 
 #include "proxywindow.hpp"
@@ -12,15 +14,46 @@ class ProxyFloatingWindow: public ProxyWindowBase {
 public:
 	explicit ProxyFloatingWindow(QObject* parent = nullptr): ProxyWindowBase(parent) {}
 
+	void connectWindow() override;
+
 	// Setting geometry while the window is visible makes the content item shrink but not the window
 	// which is awful so we disable it for floating windows.
 	void trySetWidth(qint32 implicitWidth) override;
 	void trySetHeight(qint32 implicitHeight) override;
+
+signals:
+	void minimumSizeChanged();
+	void maximumSizeChanged();
+
+private:
+	void onMinimumSizeChanged();
+	void onMaximumSizeChanged();
+
+public:
+	Q_OBJECT_BINDABLE_PROPERTY(
+	    ProxyFloatingWindow,
+	    QSize,
+	    bMinimumSize,
+	    &ProxyFloatingWindow::onMinimumSizeChanged
+	);
+
+	Q_OBJECT_BINDABLE_PROPERTY(
+	    ProxyFloatingWindow,
+	    QSize,
+	    bMaximumSize,
+	    &ProxyFloatingWindow::onMaximumSizeChanged
+	);
 };
 
 ///! Standard toplevel operating system window that looks like any other application.
 class FloatingWindowInterface: public WindowInterface {
 	Q_OBJECT;
+	// clang-format off
+	/// Minimum window size given to the window system.
+	Q_PROPERTY(QSize minimumSize READ default WRITE default NOTIFY minimumSizeChanged BINDABLE bindableMinimumSize);
+	/// Maximum window size given to the window system.
+	Q_PROPERTY(QSize maximumSize READ default WRITE default NOTIFY maximumSizeChanged BINDABLE bindableMaximumSize);
+	// clang-format on
 	QML_NAMED_ELEMENT(FloatingWindow);
 
 public:
@@ -65,6 +98,13 @@ public:
 	[[nodiscard]] QQmlListProperty<QObject> data() override;
 	// NOLINTEND
 
+	QBindable<QSize> bindableMinimumSize() { return &this->window->bMinimumSize; }
+	QBindable<QSize> bindableMaximumSize() { return &this->window->bMaximumSize; }
+
+signals:
+	void minimumSizeChanged();
+	void maximumSizeChanged();
+
 private:
 	ProxyFloatingWindow* window;
 };