1 /****************************************************************************************
2  * Copyright (c) 2007 Ian Monroe <ian@monroe.nu>                                        *
3  * Copyright (c) 2008 Soren Harward <stharward@gmail.com>                               *
4  * Copyright (c) 2013 Mark Kretschmann <kretschmann@kde.org>                            *
5  *                                                                                      *
6  * This program is free software; you can redistribute it and/or modify it under        *
7  * the terms of the GNU General Public License as published by the Free Software        *
8  * Foundation; either version 2 of the License, or (at your option) version 3 or        *
9  * any later version accepted by the membership of KDE e.V. (or its successor approved  *
10  * by the membership of KDE e.V.), which shall act as a proxy defined in Section 14 of  *
11  * version 3 of the license.                                                            *
12  *                                                                                      *
13  * This program is distributed in the hope that it will be useful, but WITHOUT ANY      *
14  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A      *
15  * PARTICULAR PURPOSE. See the GNU General Public License for more details.             *
16  *                                                                                      *
17  * You should have received a copy of the GNU General Public License along with         *
18  * this program.  If not, see <http://www.gnu.org/licenses/>.                           *
19  ****************************************************************************************/
20 
21 #ifndef PRETTYITEMDELEGATE_H
22 #define PRETTYITEMDELEGATE_H
23 
24 #include "core/meta/forward_declarations.h"
25 #include "playlist/layouts/LayoutItemConfig.h"
26 
27 #include <QModelIndex>
28 #include <QStyledItemDelegate>
29 
30 class InlineEditorWidget;
31 class QPainter;
32 class QTimeLine;
33 
34 namespace Playlist
35 {
36 class PrettyItemDelegate : public QStyledItemDelegate
37 {
38     Q_OBJECT
39 
40 public:
41     static int rowsForItem( const QModelIndex &index );
42 
43     explicit PrettyItemDelegate( QObject* parent = nullptr );
44     ~PrettyItemDelegate() override;
45 
46     QSize sizeHint( const QStyleOptionViewItem&, const QModelIndex& ) const override;
47     void paint( QPainter*, const QStyleOptionViewItem&, const QModelIndex& ) const override;
48 
49     // helper function for view which lets us determine if a click is within an album group's header
50     bool insideItemHeader( const QPoint&, const QRect& );
51 
52     /** Returns the height an item header would have */
53     int headerHeight() const;
54 
55    /**
56     * Handle clicks within a delegate.
57     * @param pos The position of the click, in delegate coordinates.
58     * @param itemRect QRect for the item.
59     * @param index The index of the clicked item.
60     * @return True if delegate acts on this click, false otherwise.
61     */
62     bool clicked( const QPoint &pos, const QRect &itemRect, const QModelIndex& index );
63 
64     QWidget * createEditor ( QWidget * parent, const QStyleOptionViewItem & option, const QModelIndex & index ) const override;
65 
66     void setModelData ( QWidget * editor, QAbstractItemModel * model, const QModelIndex & index ) const override;
67     void updateEditorGeometry ( QWidget * editor, const QStyleOptionViewItem & option, const QModelIndex & index ) const override;
68 
69 
70     /**
71     * Paint a playlist item based on a LayoutItemConfig
72     *
73     * @param config The LayoutItemConfig that defines how the item should look and which info it should include.
74     * @param painter The QPainter used to paint the item.
75     * @param option Additional state options used to paint the item..
76     * @param index The model index of the track in the playlist that we are painting.
77     * @param headerRow A boolean value specifying whether we should ignore any "markers" when painting this item.
78     *                      Markers can be such things as the "now playing" background, queue markers, multi track markers and the likes.
79     *                      The main reason for wanting to ignore these is that when painting the head part of the first track in the group, these
80     *                      things should not be shown as they will be hown in the track part of the item.
81     */
82     void paintItem( const LayoutItemConfig &config,
83                     QPainter* painter,
84                     const QStyleOptionViewItem& option,
85                     const QModelIndex& index,
86                     bool headerRow = false ) const;
87 
88 
89 protected Q_SLOTS:
90     void editorDone( InlineEditorWidget * editor );
91 
92 Q_SIGNALS:
93     void redrawRequested();
94 
95 private Q_SLOTS:
96     void currentDesktopChanged();
97 
98 private:
99     void paintActiveTrackExtras( const QRect &rect, QPainter* painter, const QModelIndex& index ) const;
100 
101     QTimeLine * m_animationTimeLine;
102     QPointF centerImage( const QPixmap&, const QRectF& ) const;
103 
104     static int getGroupMode( const QModelIndex &index);
105 
106     QMap<QString, QString> buildTrackArgsMap( const Meta::TrackPtr &track ) const;
107 
108     static QFontMetricsF* s_nfm; //normal
109     static QFontMetricsF* s_ufm; //underline
110     static QFontMetricsF* s_ifm; //italic
111     static QFontMetricsF* s_bfm; //bold
112 
113     static int s_fontHeight;
114 };
115 
116 }
117 
118 #endif
119 
120