1 /**************************************************************************************** 2 * Copyright (c) 2007 Nikolaj Hald Nielsen <nhn@kde.org> * 3 * Copyright (c) 2008 Mark Kretschmann <kretschmann@kde.org> * 4 * Copyright (c) 2009 Seb Ruiz <ruiz@kde.org> * 5 * Copyright (c) 2013 Ralf Engels <ralf-engels@gmx.de> * 6 * * 7 * This program is free software; you can redistribute it and/or modify it under * 8 * the terms of the GNU General Public License as published by the Free Software * 9 * Foundation; either version 2 of the License, or (at your option) any later * 10 * version. * 11 * * 12 * This program is distributed in the hope that it will be useful, but WITHOUT ANY * 13 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A * 14 * PARTICULAR PURPOSE. See the GNU General Public License for more details. * 15 * * 16 * You should have received a copy of the GNU General Public License along with * 17 * this program. If not, see <http://www.gnu.org/licenses/>. * 18 ****************************************************************************************/ 19 20 #ifndef AMAROK_PRETTY_TREE_DELEGATE_H 21 #define AMAROK_PRETTY_TREE_DELEGATE_H 22 23 #include <QFont> 24 #include <QRect> 25 #include <QStyledItemDelegate> 26 27 namespace Amarok { 28 class PrettyTreeView; 29 } 30 class QFontMetrics; 31 32 /** A delegate used for the browser. 33 This delegate has the following specialities: 34 It will handle the hasCoverRole and will draw a bigger item for the cover. 35 It will handle the byLineRole and will draw an extra big item with a second 36 line of text 37 Also this big item will have an expander arrow if needed and capacities and 38 actions. 39 */ 40 class PrettyTreeDelegate : public QStyledItemDelegate 41 { 42 Q_OBJECT 43 44 public: 45 explicit PrettyTreeDelegate( Amarok::PrettyTreeView *view ); 46 ~PrettyTreeDelegate() override; 47 48 void paint( QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index ) const override; 49 QSize sizeHint( const QStyleOptionViewItem &option, const QModelIndex &index ) const override; 50 51 /** Returns the rectangle where the action icon with the specific nr is located. */ 52 QRect decoratorRect( const QRect &itemRect, int nr ) const; 53 54 private: 55 /** Verify and if needed update the buffered fonts and font metrics. */ 56 void updateFonts( const QStyleOptionViewItem &option ) const; 57 58 Amarok::PrettyTreeView *m_view; 59 60 mutable QFont m_originalFont; 61 mutable QFont m_bigFont; 62 mutable QFont m_smallFont; 63 64 mutable QFontMetrics *m_normalFm; 65 mutable QFontMetrics *m_bigFm; 66 mutable QFontMetrics *m_smallFm; 67 }; 68 69 #endif 70