100 lines
2.8 KiB
C++
100 lines
2.8 KiB
C++
/*
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This file is part of KDDockWidgets.
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SPDX-FileCopyrightText: 2019 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
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Author: Sérgio Martins <sergio.martins@kdab.com>
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SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only
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Contact KDAB at <info@kdab.com> for commercial licensing options.
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*/
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#ifndef KD_DROPINDICATOROVERLAY_H
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#define KD_DROPINDICATOROVERLAY_H
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#include "kddockwidgets/docks_export.h"
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#include "kddockwidgets/KDDockWidgets.h"
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#include "Controller.h"
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namespace KDDockWidgets {
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namespace Core {
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class DropArea;
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class Group;
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/// The DropIndicatorOverlay controller has drop indicator state
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///
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/// Such as:
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/// - Current hovered tab group
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/// - Current window being dragged
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/// - Current visible drop location
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/// Each DropArea has an associated DropIndicatorOverlay. Hence, each main window, each floating window
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/// has one DropIndicatorOverlay.
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class DOCKS_EXPORT DropIndicatorOverlay : public Controller
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{
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Q_OBJECT
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public:
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/// Constructor
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/// This overload takes the associated view (i.e QWidget where indicators are drawn).
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/// This overload is used by the Segmented Indicators type
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explicit DropIndicatorOverlay(DropArea *dropArea, View *view);
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/// Constructor
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/// Used by the Classic Indicators, creates a dummy/unused view internally.
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/// Classic Indicators is a special case, as it paints the indicators on a separate top-level window
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/// not on the main window itself
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explicit DropIndicatorOverlay(DropArea *dropArea);
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~DropIndicatorOverlay() override;
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void setHoveredGroup(Group *);
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void setWindowBeingDragged(bool);
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Rect hoveredGroupRect() const;
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bool isHovered() const;
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DropLocation currentDropLocation() const;
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Group *hoveredGroup() const;
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virtual void setCurrentDropLocation(DropLocation);
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KDDockWidgets::DropLocation hover(Point globalPos);
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/// Clears and hides drop indicators
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void removeHover();
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/// @brief returns the position of the specified drop location
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/// The return is in global coordinates
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virtual Point posForIndicator(DropLocation) const = 0;
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/// @brief Returns whether the specified drop indicator should be visible
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virtual bool dropIndicatorVisible(DropLocation) const;
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static KDDockWidgets::Location multisplitterLocationFor(DropLocation);
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class Private;
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Private *dptr() const;
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private:
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void onGroupDestroyed();
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void setHoveredGroupRect(Rect);
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Rect m_hoveredGroupRect;
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DropLocation m_currentDropLocation = DropLocation_None;
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Private *const d;
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protected:
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virtual DropLocation hover_impl(Point globalPos) = 0;
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virtual void onHoveredGroupChanged(Group *);
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virtual void updateVisibility();
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Group *m_hoveredGroup = nullptr;
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DropArea *const m_dropArea;
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bool m_draggedWindowIsHovering = false;
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};
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}
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}
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#endif
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