src/views/dolphinfileitemdelegate.h

   1 /***************************************************************************
   2  *   Copyright (C) 2008 by Peter Penz <peter.penz19@gmail.com>             *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #ifndef DOLPHINFILEITEMDELEGATE_H
  21 #define DOLPHINFILEITEMDELEGATE_H
  22
  23 #include <KFileItemDelegate>
  24 #include <views/dolphinmodel.h>
  25
  26 class QAbstractProxyModel;
  27
  28 /**
  29  * Extends KFileItemDelegate by the ability to show the hover effect
  30  * and the selection in a minimized way for the name column of
  31  * the details view.
  32  *
  33  * Note that this is a workaround, as Qt does not support having custom
  34  * shapes within the visual rect of an item view. The visual part of
  35  * workaround is handled inside DolphinFileItemDelegate, the behavior
  36  * changes are handled in DolphinTreeView.
  37  */
  38 class DolphinFileItemDelegate : public KFileItemDelegate
  39 {
  40     Q_OBJECT
  41 public:
  42     explicit DolphinFileItemDelegate(QObject* parent = 0);
  43     virtual ~DolphinFileItemDelegate();
  44
  45     /**
  46      * If \a minimized is true, the hover effect and the selection are
  47      * only drawn above the icon and text of an item. Per default
  48      * \a minimized is false, which means that the whole visual rect is
  49      * used like in KFileItemDelegate.
  50      */
  51     void setMinimizedNameColumn(bool minimized);
  52     bool hasMinimizedNameColumn() const;
  53
  54     virtual void paint(QPainter* painter,
  55                        const QStyleOptionViewItem& option,
  56                        const QModelIndex& index) const;
  57
  58     /**
  59      * Returns the minimized width of the name column for the name \a name. This method
  60      * is also used in DolphinDetailsView to handle the selection of items correctly.
  61      */
  62     static int nameColumnWidth(const QString& name, const QStyleOptionViewItem& option);
  63
  64 private slots:
  65     void handleDisplayPaletteChange();
  66
  67 private:
  68     static void adjustOptionWidth(QStyleOptionViewItemV4& option,
  69                                   const QAbstractProxyModel* proxyModel,
  70                                   const DolphinModel* dolphinModel,
  71                                   const QModelIndex& index);
  72
  73     static void adjustOptionTextColor(QStyleOptionViewItemV4& option,
  74                                       KVersionControlPlugin::VersionState state);
  75
  76     QPixmap emblemForState(KVersionControlPlugin::VersionState state, const QSize& size) const;
  77
  78 private:
  79     bool m_hasMinimizedNameColumn;
  80     mutable QSize m_cachedSize;
  81     mutable QPixmap m_cachedEmblems[KVersionControlPlugin::LocallyModifiedUnstagedVersion + 1];
  82     mutable QColor m_cachedInactiveTextColor;
  83     mutable bool m_cachedInactiveTextColorDirty;
  84 };
  85
  86 inline void DolphinFileItemDelegate::setMinimizedNameColumn(bool minimized)
  87 {
  88     m_hasMinimizedNameColumn = minimized;
  89 }
  90
  91 inline bool DolphinFileItemDelegate::hasMinimizedNameColumn() const
  92 {
  93     return m_hasMinimizedNameColumn;
  94 }
  95
  96 #endif