vasilito
cf12defd28
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
84 lines
3.0 KiB
C++
84 lines
3.0 KiB
C++
/*
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SPDX-FileCopyrightText: 2008 Fredrik Höglund <fredrik@kde.org>
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SPDX-License-Identifier: LGPL-2.0-or-later
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*/
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#ifndef KABSTRACTVIEWADAPTER_H
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#define KABSTRACTVIEWADAPTER_H
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#include "kiofilewidgets_export.h"
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#include <QObject>
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class QAbstractItemModel;
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class QModelIndex;
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class QPalette;
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class QRect;
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class QSize;
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/*
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* TODO KF6 Q_PROPERTY(QSize iconSize READ iconSize WRITE setIconSize NOTIFY iconSizeChanged)
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* TODO KF6 virtual void setIconSize(const QSize &size);
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* TODO KF6 iconSizeChanged();
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*
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* TODO KF6:
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* KAbstractViewAdapter exists to allow KFilePreviewGenerator to be
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* reused with new kinds of views. Unfortunately it doesn't cover
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* all use cases that would be useful right now, in particular there
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* are no change notifications for the properties it has getters for.
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* This requires view implementations to e.g. call updateIcons() on
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* the generator when the icon size changes, which means updating two
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* entities (the generator and the adapter) instead of only one.
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* In KF6 we should make iconSize a Q_PROPERTY with a virtual setter
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* and a change notification signal, and make KFilePreviewGenerator
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* listen to that signal.
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* A related problem is that while the adapter is supposed to inter-
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* face a view to the generator, it is sometimes the generator that
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* is responsible for instantiating the adapter: KDirOperator in this
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* framework uses the KFilePreviewGenerator constructor that doesn't
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* take an adapter instance, which makes the generator instantiate a
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* KIO::DefaultViewAdapter internally, which it doesn't expose to the
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* outside. That means even when a setIconSize() is added,
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* KDirOperator won't be able to call it on the adapter. This mis-
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* design needs to be addressed as well so all change notifications
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* can run through the adapter, also for the DefaultViewAdapter
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* implementation (though for this specific example, perhaps Qt will
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* one day give us a NOTIFY for QAbstractItemView::iconSize that the
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* DefaultViewAdapter can use, obviating the need for KDirOperator
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* to do anything except call setIconSize on its QAbstractItemView).
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*/
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/**
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* @class KAbstractViewAdapter kabstractviewadapter.h <KAbstractViewAdapter>
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*
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* Interface used by KFilePreviewGenerator to generate previews
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* for files. The interface allows KFilePreviewGenerator to be
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* independent from the view implementation.
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*/
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class KIOFILEWIDGETS_EXPORT KAbstractViewAdapter : public QObject
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{
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public:
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enum Signal {
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ScrollBarValueChanged,
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IconSizeChanged
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};
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KAbstractViewAdapter(QObject *parent)
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: QObject(parent)
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{
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}
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~KAbstractViewAdapter() override
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{
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}
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virtual QAbstractItemModel *model() const = 0;
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virtual QSize iconSize() const = 0;
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virtual QPalette palette() const = 0;
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virtual QRect visibleArea() const = 0;
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virtual QRect visualRect(const QModelIndex &index) const = 0;
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// TODO KF6 make this connect work with a PointerToMemberFunction/Functor
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virtual void connect(Signal signal, QObject *receiver, const char *slot) = 0;
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};
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#endif
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