0bd5dc57fa
- DropOverlay and DropSplitArea widgets are friendly, but still separate for better customization. - Both classes are reusable, no longer create a new instance of DropSplitArea for each show call.
74 lines
1.6 KiB
C++
74 lines
1.6 KiB
C++
#ifndef DROP_OVERLAY_H
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#define DROP_OVERLAY_H
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#include <QPointer>
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#include <QHash>
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#include <QRect>
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#include <QFrame>
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class QGridLayout;
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#include "ads/API.h"
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ADS_NAMESPACE_BEGIN
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class DropSplitAreas;
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// DropOverlay paints a translucent rectangle over another widget.
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// It can also show different types of drop area indicators.
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class DropOverlay : public QFrame
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{
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Q_OBJECT
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friend class DropSplitAreas;
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public:
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DropOverlay(QWidget* parent);
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virtual ~DropOverlay();
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void setAllowedAreas(DropAreas areas);
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DropAreas allowedAreas() const;
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DropArea cursorLocation() const;
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DropArea showDropOverlay(QWidget* target);
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void showDropOverlay(QWidget* target, const QRect& targetAreaRect);
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void hideDropOverlay();
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protected:
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virtual void paintEvent(QPaintEvent *e);
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virtual void showEvent(QShowEvent* e);
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virtual void hideEvent(QHideEvent* e);
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virtual void resizeEvent(QResizeEvent* e);
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virtual void moveEvent(QMoveEvent* e);
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private:
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DropAreas _allowedAreas;
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DropSplitAreas* _splitAreas;
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bool _fullAreaDrop;
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QPointer<QWidget> _target;
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QRect _targetRect;
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DropArea _lastLocation;
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};
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// DropSplitAreas shows a cross with 5 different drop area possibilities.
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class DropSplitAreas : public QWidget
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{
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Q_OBJECT
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public:
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DropSplitAreas(DropOverlay* overlay);
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void reset();
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DropArea cursorLocation() const;
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void setWidgetForArea(QWidget* widget, DropArea area);
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protected:
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virtual void showEvent(QShowEvent* e);
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private:
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DropOverlay* _overlay;
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QHash<DropArea, QWidget*> _widgets;
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QGridLayout* _grid;
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};
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ADS_NAMESPACE_END
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#endif
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