131 lines
2.7 KiB
C++
131 lines
2.7 KiB
C++
/*
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* SPDX-FileCopyrightText: 2014 Hugo Pereira Da Costa <hugo.pereira@free.fr>
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef breezeframeshadow_h
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#define breezeframeshadow_h
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#include "breeze.h"
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#include "breezeaddeventfilter.h"
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#include "breezehelper.h"
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#include <QEvent>
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#include <QObject>
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#include <QSet>
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#include <KColorScheme>
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#include <QPaintEvent>
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#include <QWidget>
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namespace Breeze
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{
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//* shadow manager
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class FrameShadowFactory : public QObject
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{
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Q_OBJECT
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public:
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//* constructor
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explicit FrameShadowFactory(QObject *parent)
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: QObject(parent)
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{
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}
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//* register widget
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bool registerWidget(QWidget *, Helper &);
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//* unregister
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void unregisterWidget(QWidget *);
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//* true if widget is registered
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bool isRegistered(const QWidget *widget) const
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{
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return _registeredWidgets.contains(widget);
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}
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//* event filter
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bool eventFilter(QObject *, QEvent *) override;
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//* update state
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void updateState(const QWidget *, bool focus, bool hover, qreal opacity, AnimationMode) const;
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//* update shadows geometry
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void updateShadowsGeometry(const QObject *, QRect) const;
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protected:
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//* install shadows on given widget
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void installShadows(QWidget *, Helper &);
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//* remove shadows from widget
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void removeShadows(QWidget *);
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//* raise shadows
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void raiseShadows(QObject *) const;
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//* update shadows
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void update(QObject *) const;
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//* install shadow on given side
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void installShadow(QWidget *, Helper &, Side) const;
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protected Q_SLOTS:
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//* triggered by object destruction
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void widgetDestroyed(QObject *);
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private:
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//* needed to block ChildAdded events when creating shadows
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AddEventFilter _addEventFilter;
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//* set of registered widgets
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QSet<const QObject *> _registeredWidgets;
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};
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//* frame shadow
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/** this allows the shadow to be painted over the widgets viewport */
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class FrameShadow : public QWidget
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{
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Q_OBJECT
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public:
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//* constructor
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FrameShadow(Side, Helper &);
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//* update geometry
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virtual void updateGeometry(QRect);
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//* update state
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void updateState(bool focus, bool hover, qreal opacity, AnimationMode);
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protected:
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//* painting
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void paintEvent(QPaintEvent *) override;
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//* return viewport associated to parent widget
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QWidget *viewport() const;
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private:
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//* helper
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Helper &_helper;
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//* shadow area
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Side _area;
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//* margins
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/** offsets between update rect and parent widget rect. It is set via updateGeometry */
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QMargins _margins;
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//*@name widget state
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//@{
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bool _hasFocus = false;
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bool _mouseOver = false;
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qreal _opacity = -1;
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AnimationMode _mode = AnimationNone;
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//@}
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};
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}
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#endif
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