First Commit

pcsx2-qt/Debugger/Docking/DropIndicators.h

@@ -0,0 +1,108 @@
+// SPDX-FileCopyrightText: 2002-2025 PCSX2 Dev Team
+// SPDX-License-Identifier: GPL-3.0+
+
+#pragma once
+
+#include <kddockwidgets/core/indicators/ClassicDropIndicatorOverlay.h>
+#include <kddockwidgets/core/views/ClassicIndicatorWindowViewInterface.h>
+#include <kddockwidgets/qtwidgets/views/SegmentedDropIndicatorOverlay.h>
+
+class DockDropIndicator;
+
+// This switches between our custom drop indicators and KDDockWidget's built-in
+// ones on the fly depending on whether or not we have a windowing system that
+// supports compositing.
+class DockDropIndicatorProxy : public KDDockWidgets::Core::ClassicIndicatorWindowViewInterface
+{
+public:
+	DockDropIndicatorProxy(KDDockWidgets::Core::ClassicDropIndicatorOverlay* classic_indicators);
+	~DockDropIndicatorProxy();
+
+	void setObjectName(const QString&) override;
+	KDDockWidgets::DropLocation hover(QPoint globalPos) override;
+	QPoint posForIndicator(KDDockWidgets::DropLocation) const override;
+	void updatePositions() override;
+	void raise() override;
+	void setVisible(bool visible) override;
+	void resize(QSize size) override;
+	void setGeometry(QRect rect) override;
+	bool isWindow() const override;
+	void updateIndicatorVisibility() override;
+
+private:
+	KDDockWidgets::Core::ClassicIndicatorWindowViewInterface* window();
+	const KDDockWidgets::Core::ClassicIndicatorWindowViewInterface* window() const;
+
+	void recreateWindowIfNecessary();
+
+	KDDockWidgets::Core::ClassicIndicatorWindowViewInterface* m_window = nullptr;
+	KDDockWidgets::Core::ClassicIndicatorWindowViewInterface* m_fallback_window = nullptr;
+
+	bool m_supports_compositing = true;
+	KDDockWidgets::Core::ClassicDropIndicatorOverlay* m_classic_indicators = nullptr;
+};
+
+// Our default custom drop indicator implementation. This fits in with PCSX2's
+// themes a lot better, but doesn't support windowing systems where compositing
+// is disabled (it would show a black screen).
+class DockDropIndicatorWindow : public QWidget, public KDDockWidgets::Core::ClassicIndicatorWindowViewInterface
+{
+	Q_OBJECT
+
+public:
+	DockDropIndicatorWindow(
+		KDDockWidgets::Core::ClassicDropIndicatorOverlay* classic_indicators);
+
+	void setObjectName(const QString& name) override;
+	KDDockWidgets::DropLocation hover(QPoint globalPos) override;
+	QPoint posForIndicator(KDDockWidgets::DropLocation loc) const override;
+	void updatePositions() override;
+	void raise() override;
+	void setVisible(bool visible) override;
+	void resize(QSize size) override;
+	void setGeometry(QRect rect) override;
+	bool isWindow() const override;
+	void updateIndicatorVisibility() override;
+
+protected:
+	void resizeEvent(QResizeEvent* ev) override;
+
+private:
+	KDDockWidgets::Core::ClassicDropIndicatorOverlay* m_classic_indicators;
+	std::vector<DockDropIndicator*> m_indicators;
+};
+
+class DockDropIndicator : public QWidget
+{
+	Q_OBJECT
+
+public:
+	DockDropIndicator(KDDockWidgets::DropLocation loc, QWidget* parent = nullptr);
+
+	KDDockWidgets::DropLocation location;
+	bool hovered = false;
+
+protected:
+	void paintEvent(QPaintEvent* event) override;
+};
+
+// An alternative drop indicator design that can be enabled from the settings
+// menu. For this one we don't need to worry about whether compositing is
+// supported since it doesn't create its own window.
+class DockSegmentedDropIndicatorOverlay : public KDDockWidgets::QtWidgets::SegmentedDropIndicatorOverlay
+{
+	Q_OBJECT
+
+public:
+	DockSegmentedDropIndicatorOverlay(
+		KDDockWidgets::Core::SegmentedDropIndicatorOverlay* controller, QWidget* parent = nullptr);
+
+	static std::string s_indicator_style;
+
+protected:
+	void paintEvent(QPaintEvent* event) override;
+
+private:
+	void drawSegmented();
+	void drawMinimalistic();
+};