src/panels/folders/paneltreeview.cpp

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