apps/dolphin/src/panels/folders/paneltreeview.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Peter Penz <peter.penz@gmx.at>                  *
   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 #include "paneltreeview.h"
  21
  22 #include "dolphincontroller.h"
  23 #include "dolphinmodel.h"
  24 #include "draganddrophelper.h"
  25
  26 #include <kfileitemdelegate.h>
  27 #include <QKeyEvent>
  28 #include <QPainter>
  29 #include <QHeaderView>
  30 #include <QScrollBar>
  31
  32 PanelTreeView::PanelTreeView(QWidget* parent) :
  33     KTreeView(parent)
  34 {
  35     setAcceptDrops(true);
  36     setUniformRowHeights(true);
  37     setSelectionMode(QAbstractItemView::SingleSelection);
  38     setEditTriggers(QAbstractItemView::NoEditTriggers);
  39     setSortingEnabled(true);
  40     setFrameStyle(QFrame::NoFrame);
  41     setDragDropMode(QAbstractItemView::DragDrop);
  42     setDropIndicatorShown(false);
  43
  44     setVerticalScrollMode(QListView::ScrollPerPixel);
  45     setHorizontalScrollMode(QListView::ScrollPerPixel);
  46
  47     viewport()->setAttribute(Qt::WA_Hover);
  48
  49     // make the background transparent and apply the window-text color
  50     // to the text color, so that enough contrast is given for all color
  51     // schemes
  52     QPalette p = palette();
  53     p.setColor(QPalette::Active,   QPalette::Text, p.color(QPalette::Active,   QPalette::WindowText));
  54     p.setColor(QPalette::Inactive, QPalette::Text, p.color(QPalette::Inactive, QPalette::WindowText));
  55     p.setColor(QPalette::Disabled, QPalette::Text, p.color(QPalette::Disabled, QPalette::WindowText));
  56     setPalette(p);
  57     viewport()->setAutoFillBackground(false);
  58
  59     KFileItemDelegate* delegate = new KFileItemDelegate(this);
  60     setItemDelegate(delegate);
  61 }
  62
  63 PanelTreeView::~PanelTreeView()
  64 {
  65 }
  66
  67 bool PanelTreeView::event(QEvent* event)
  68 {
  69     switch (event->type()) {
  70     case QEvent::Polish:
  71         // hide all columns except of the 'Name' column
  72         hideColumn(DolphinModel::Size);
  73         hideColumn(DolphinModel::ModifiedTime);
  74         hideColumn(DolphinModel::Permissions);
  75         hideColumn(DolphinModel::Owner);
  76         hideColumn(DolphinModel::Group);
  77         hideColumn(DolphinModel::Type);
  78         hideColumn(DolphinModel::Rating);
  79         hideColumn(DolphinModel::Tags);
  80         header()->hide();
  81         break;
  82
  83     case QEvent::Show:
  84         // TODO: The opening/closing animation of subtrees flickers in combination with the
  85         // panel when using the Oxygen style. As workaround the animation is turned off:
  86         setAnimated(false);
  87         break;
  88
  89     case QEvent::UpdateRequest:
  90         // a wheel movement will scroll 1 item
  91         if (model()->rowCount() > 0) {
  92             verticalScrollBar()->setSingleStep(sizeHintForRow(0) / 3);
  93         }
  94         break;
  95
  96     default:
  97         break;
  98     }
  99
 100     return KTreeView::event(event);
 101 }
 102
 103 void PanelTreeView::startDrag(Qt::DropActions supportedActions)
 104 {
 105     DragAndDropHelper::instance().startDrag(this, supportedActions);
 106 }
 107
 108 void PanelTreeView::dragEnterEvent(QDragEnterEvent* event)
 109 {
 110     KTreeView::dragEnterEvent(event);
 111     if (event->mimeData()->hasUrls()) {
 112         event->acceptProposedAction();
 113     }
 114 }
 115
 116 void PanelTreeView::dragLeaveEvent(QDragLeaveEvent* event)
 117 {
 118     KTreeView::dragLeaveEvent(event);
 119     setDirtyRegion(m_dropRect);
 120 }
 121
 122 void PanelTreeView::dragMoveEvent(QDragMoveEvent* event)
 123 {
 124     KTreeView::dragMoveEvent(event);
 125
 126     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 127     const QModelIndex index = indexAt(event->pos());
 128     setDirtyRegion(m_dropRect);
 129     m_dropRect = visualRect(index);
 130     setDirtyRegion(m_dropRect);
 131
 132     if (event->mimeData()->hasUrls()) {
 133         // accept url drops, independently from the destination item
 134         event->acceptProposedAction();
 135     }
 136 }
 137
 138 void PanelTreeView::dropEvent(QDropEvent* event)
 139 {
 140     const QModelIndex index = indexAt(event->pos());
 141     if (index.isValid()) {
 142         emit urlsDropped(index, event);
 143     }
 144     KTreeView::dropEvent(event);
 145 }
 146
 147 #include "paneltreeview.moc"