File indexing completed on 2024-04-21 03:56:02

 /*
  *  SPDX-FileCopyrightText: 2020 Carson Black <uhhadd@gmail.com>
  *
  *  SPDX-License-Identifier: LGPL-2.0-or-later
  */
 
 #pragma once
 
 #include <QMap>
 #include <QObject>
 #include <QPair>
 #include <QPointer>
 #include <QQmlListProperty>
 #include <QQmlParserStatus>
 #include <QQuickItem>
 
 /**
  * SizeGroup is a utility object that makes groups of items request the same size.
  */
 class SizeGroup : public QObject, public QQmlParserStatus
 {
     Q_OBJECT
     QML_ELEMENT
     Q_INTERFACES(QQmlParserStatus)
 
 public:
     enum Mode {
         None = 0, /// SizeGroup does nothing
         Width = 1, /// SizeGroup syncs item widths
         Height = 2, /// SizeGroup syncs item heights
         Both = 3, /// SizeGroup syncs both item widths and heights
     };
     Q_ENUM(Mode)
     Q_DECLARE_FLAGS(Modes, Mode)
 
 private:
     Mode m_mode = None;
     QList<QPointer<QQuickItem>> m_items;
     QMap<QQuickItem *, QPair<QMetaObject::Connection, QMetaObject::Connection>> m_connections;
 
 public:
     /**
      * Which dimensions this SizeGroup should adjust
      */
     Q_PROPERTY(Mode mode MEMBER m_mode NOTIFY modeChanged FINAL)
     Q_SIGNAL void modeChanged();
 
     /**
      * Which items this SizeGroup should adjust
      */
     Q_PROPERTY(QQmlListProperty<QQuickItem> items READ items CONSTANT FINAL)
     QQmlListProperty<QQuickItem> items();
 
     void adjustItems(Mode whatChanged);
     void connectItem(QQuickItem *item);
 
     /**
      * Forces the SizeGroup to relayout items.
      *
      * Normally this is never needed as the SizeGroup automatically
      * relayout items as they're added and their sizes change.
      */
     Q_INVOKABLE void relayout();
 
     void classBegin() override
     {
     }
     void componentComplete() override;
 
 private:
     static void appendItem(QQmlListProperty<QQuickItem> *prop, QQuickItem *value);
     static qsizetype itemCount(QQmlListProperty<QQuickItem> *prop);
     static QQuickItem *itemAt(QQmlListProperty<QQuickItem> *prop, qsizetype index);
     static void clearItems(QQmlListProperty<QQuickItem> *prop);
 };