source: src/mvc/delegate.h @ 809b5e5

qt5
Last change on this file since 809b5e5 was 809b5e5, checked in by gregor herrmann <gregor@…>, 4 years ago

Merge branch 'master' into qt5

  • Property mode set to 100644
File size: 3.9 KB
Line 
1/*
2 * Copyright (C) 2010 Ixonos Plc.
3 * Copyright (C) 2011-2017 Philipp Spitzer, gregor herrmann, Stefan Stahl
4 *
5 * This file is part of ConfClerk.
6 *
7 * ConfClerk is free software: you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the Free
9 * Software Foundation, either version 2 of the License, or (at your option)
10 * any later version.
11 *
12 * ConfClerk is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * ConfClerk.  If not, see <http://www.gnu.org/licenses/>.
19 */
20#ifndef DELEGATE_H
21#define DELEGATE_H
22
23#include <QtWidgets>
24
25class Delegate : public QItemDelegate
26{
27    Q_OBJECT
28
29    public:
30
31        enum ControlId
32        {
33            ControlNone = 0,
34            FavouriteControlStrong,
35            FavouriteControlWeak,
36            FavouriteControlNo,
37            AlarmControlOn,
38            AlarmControlOff,
39            WarningControl
40        };
41
42        class Control
43        {
44            public:
45                Control(ControlId aControlId, const QString &aImageName, const Control* prev_control);
46
47                inline QImage *image() const { return mImage; }
48                inline void setDrawPoint(const QPoint &aPoint) { mDrawPoint = aPoint; }
49                inline QRect drawRect(const QRect &aRect) const // helper for determining if Control was clicked
50                {
51                    return QRect(drawPoint(aRect), drawPoint(aRect)+QPoint(mImage->size().width(),mImage->size().height()));
52                }
53                void paint(QPainter* painter, const QRect rect);
54
55                bool enabled() const { return mEnabled; }
56                void setEnabled(bool v) { mEnabled = v; }
57            private:
58                inline QPoint drawPoint(const QRect &aRect = QRect()) const // for painter to draw Control
59                {
60                    if(aRect == QRect()) // null rectangle
61                        return mDrawPoint; // returns relative drawing point
62                    else
63                        return QPoint(aRect.x()+aRect.width(),aRect.y()) + mDrawPoint; // returns absolute drawing point
64                }
65
66                ControlId mId;
67                QImage *mImage;
68                QPoint mDrawPoint; // relative 'start-drawing' position (may hold negative values)
69                bool mEnabled;
70        };
71
72        Delegate(QTreeView *aParent); // the delegate 'owner' has to be specified in the constructor - it's used to obtain visualRect of selected item/index
73        ~Delegate();
74
75        void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const;
76        QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const;
77        //
78        Delegate::ControlId whichControlClicked(const QModelIndex &aIndex, const QPoint &aPoint) const;
79        bool isPointFromRect(const QPoint &aPoint, const QRect &aRect) const;
80
81    private:
82        bool hasParent( const QModelIndex &index ) const;
83        bool isLast( const QModelIndex &index ) const;
84        bool isExpanded( const QModelIndex &index ) const;
85        void defineControls();
86        // TODO: the better place for these methods would be 'eventmodel'
87        // they are used in 'paint' method and so it's better to obtain number of
88        // favourities/alarms once when the data has changed and not to call
89        // these methods which iterate over all Events in corresponding group
90        // every time it requires them
91        int numberOfFavourities(const QModelIndex &index) const;
92        int numberOfAlarms(const QModelIndex &index) const;
93
94    private:
95        QPointer<QTreeView> mViewPtr;
96        QMap<ControlId,Control*> mControls;
97};
98
99#endif /* DELEGATE_H */
100
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