98 lines
2.7 KiB
C++
98 lines
2.7 KiB
C++
/*
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This file is part of the KDE project
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SPDX-FileCopyrightText: 2021 Felix Ernst <fe.a.ernst@gmail.com>
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SPDX-License-Identifier: LGPL-2.1-or-later
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*/
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#ifndef ALIGNWITHSIDEBARWIDGETACTION_H
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#define ALIGNWITHSIDEBARWIDGETACTION_H
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#include <QPointer>
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#include <QToolBar>
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#include <QWidgetAction>
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/**
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* A spacer used to align actions in the toolbar with the sidebar.
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*/
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class AlignWithSideBarWidgetAction : public QWidgetAction
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{
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Q_OBJECT
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public:
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AlignWithSideBarWidgetAction(QObject *parent = nullptr);
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/**
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* @param sideBar the QWidget this spacer will base its width on to facilitate alignment.
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* Can be nullptr.
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*/
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void setSideBar(QWidget *sideBar);
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protected:
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/** @see QWidgetAction::createWidget() */
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QWidget *createWidget(QWidget *parent) override;
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private:
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/** The sideBar to align with. */
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QPointer<QWidget> mSideBar;
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};
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/**
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* The widget of AlignWithSideBarWidgetAction.
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* This class is not meant to be used from outside AlignWithSideBarWidgetAction.
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*/
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class AligningSpacer : public QWidget
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{
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Q_OBJECT
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public:
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AligningSpacer(QWidget *parent);
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/** @see AlignWithSideBarWidgetAction::setSideBar() */
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void setSideBar(QWidget *sideBar);
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/**
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* Used to trigger updateWidth() whenever mSideBar's width changes.
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*/
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bool eventFilter(QObject * /* watched */, QEvent *event) override;
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protected:
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/**
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* Used to trigger updateWidth() when the containing toolbar is locked/unlocked.
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*/
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void moveEvent(QMoveEvent * /* moved */) override;
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private:
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/**
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* Having a separator directly after an empty space looks bad unless the separator
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* is aligned with a sidebar. This method is used to remove or re-add the separator
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* so everything looks nice.
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* @param visible Wether a potential separator after this widget should be visible.
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* This will always be changed to true if the parent toolbar is vertical.
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*/
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void setFollowingSeparatorVisible(bool visible);
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/**
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* Updates the width of the spacer depending on the sizeHint() and sets the visibility
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* of a potentially following separator.
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*/
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void update();
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/**
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* Calculates the width of this spacer based on its position, the sideBar width,
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* the toolbar orientation and the following action.
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* @return the new width in pixels.
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*/
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int updateWidth();
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private:
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/** The SideBar to align with. */
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QPointer<QWidget> mSideBar;
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/** The parentWidget() of this widget or nullptr when the parent isn't a QToolBar. */
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QPointer<QToolBar> mToolbar;
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/** This spacer removes following separators if they would look bad/pointless. */
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bool mWasSeparatorRemoved = false;
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};
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#endif // ALIGNWITHSIDEBARWIDGETACTION_H
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