/usr/include/plasma/delegate.h is in kdelibs5-dev 4:4.13.0-0ubuntu1.
This file is owned by root:root, with mode 0o644.
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Copyright 2007 Robert Knight <robertknight@gmail.com>
Copyright 2008 Marco Martin <notmart@gmail.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef PLASMA_DELEGATE_H
#define PLASMA_DELEGATE_H
// Qt
#include <QtGui/QAbstractItemDelegate>
// Plasma
#include <plasma/plasma_export.h>
namespace Plasma
{
class DelegatePrivate;
/**
* @class Delegate plasma/delegate.h <Plasma/Delegate>
*
* Item delegate for rendering items in Plasma menus implemented with item views.
*
* The delegate makes use of its own data roles that are:
* SubTitleRole: the text of the subtitle
* SubTitleMandatoryRole: if the subtitle is to always be displayed
* (as default the subtitle is displayed only on mouse over)
* NOTE: if model doesn't return a valid data for SubTitleMandatoryRole (i.e. if it returns QVaraint())
* then subtitles will be shown for adjasent items with the same content and not shown
* otherwise.
*
* ColumnTypeRole: if the column is a main column (with title and subtitle)
* or a secondary action column (only a little icon that appears on mouse
* over is displayed)
*/
class PLASMA_EXPORT Delegate : public QAbstractItemDelegate
{
Q_OBJECT
public:
enum SpecificRoles {
SubTitleRole = Qt::UserRole + 1,
SubTitleMandatoryRole = Qt::UserRole + 2,
ColumnTypeRole = Qt::UserRole + 3
};
enum ColumnType {
MainColumn = 1,
SecondaryActionColumn = 2
};
Delegate(QObject *parent = 0);
~Delegate();
/**
* Maps an arbitrary role to a role belonging to SpecificRoles.
* Using this function you can use any model with this delegate.
*
* @param role a role belonging to SpecificRoles
* @param actual an arbitrary role of the model we are using
*/
void setRoleMapping(SpecificRoles role, int actual);
int roleMapping(SpecificRoles role) const;
//Reimplemented
virtual void paint(QPainter *painter, const QStyleOptionViewItem &option,
const QModelIndex &index) const;
/**
* @return true if a tooltip should be shown
*/
bool showToolTip() const;
protected:
/**
* Returns the empty area after the title.
* The height is the height of the subtitle.
* It can be used by subclasses that wants to paint additional data after
* calling the paint function of the superclass.
*
* @param option options for the title text
* @param index model index that we want to compute the free area
*/
QRect rectAfterTitle(const QStyleOptionViewItem &option, const QModelIndex &index) const;
/**
* Returns the empty area after the subtitle.
* The height is the height of the subtitle.
* It can be used by subclasses, that wants to paint additional data.
*
* @param option options for the subtitle text
* @param index model index that we want to compute the free area
*/
QRect rectAfterSubTitle(const QStyleOptionViewItem &option, const QModelIndex &index) const;
/**
* Returns the empty area after both the title and the subtitle.
* The height is the height of the item.
* It can be used by subclasses that wants to paint additional data
*
* @param option options for the title and subtitle text
* @param index model index that we want to compute the free area
*/
QRect emptyRect(const QStyleOptionViewItem &option, const QModelIndex &index) const;
virtual QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const;
private:
DelegatePrivate *const d;
};
}
#endif // PLASMA_DELEGATE_H
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