src/draganddrophelper.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2007 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 "draganddrophelper.h"
  21 #include "dolphiniconsview.h"
  22
  23 #include <kdirmodel.h>
  24 #include <kicon.h>
  25
  26 #include <QAbstractItemView>
  27 #include <QAbstractProxyModel>
  28 #include <QBrush>
  29 #include <QDrag>
  30 #include <QPainter>
  31 #include <QRect>
  32 #include <QWidget>
  33
  34 void DragAndDropHelper::startDrag(QAbstractItemView* itemView, Qt::DropActions supportedActions)
  35 {
  36     QModelIndexList indexes = itemView->selectionModel()->selectedIndexes();
  37     if (indexes.count() > 0) {
  38         QMimeData *data = itemView->model()->mimeData(indexes);
  39         if (data == 0) {
  40             return;
  41         }
  42
  43         QDrag* drag = new QDrag(itemView);
  44         QPixmap pixmap;
  45         if (indexes.count() == 1) {
  46             QAbstractProxyModel* proxyModel = static_cast<QAbstractProxyModel*>(itemView->model());
  47             KDirModel* dirModel = static_cast<KDirModel*>(proxyModel->sourceModel());
  48             const QModelIndex index = proxyModel->mapToSource(indexes.first());
  49
  50             const KFileItem item = dirModel->itemForIndex(index);
  51             pixmap = item.pixmap(KIconLoader::SizeMedium, KIconLoader::SizeMedium);
  52         } else {
  53             pixmap = KIcon("document-multiple").pixmap(KIconLoader::SizeMedium, KIconLoader::SizeMedium);
  54         }
  55         drag->setPixmap(pixmap);
  56         drag->setMimeData(data);
  57         drag->exec(supportedActions, Qt::IgnoreAction);
  58     }
  59 }
  60
  61 void DragAndDropHelper::drawHoverIndication(QAbstractItemView* itemView,
  62                                             const QRect& bounds,
  63                                             const QBrush& brush)
  64 {
  65     if (bounds.isEmpty()) {
  66         return;
  67     }
  68
  69     QWidget* widget = itemView->viewport();
  70
  71     QPainter painter(widget);
  72     painter.save();
  73     QBrush blendedBrush(brush);
  74     QColor color = blendedBrush.color();
  75     color.setAlpha(64);
  76     blendedBrush.setColor(color);
  77
  78     if (dynamic_cast<DolphinIconsView*>(itemView)) {
  79         const int radius = 10;
  80         QPainterPath path(QPointF(bounds.left(), bounds.top() + radius));
  81         path.quadTo(bounds.left(), bounds.top(), bounds.left() + radius, bounds.top());
  82         path.lineTo(bounds.right() - radius, bounds.top());
  83         path.quadTo(bounds.right(), bounds.top(), bounds.right(), bounds.top() + radius);
  84         path.lineTo(bounds.right(), bounds.bottom() - radius);
  85         path.quadTo(bounds.right(), bounds.bottom(), bounds.right() - radius, bounds.bottom());
  86         path.lineTo(bounds.left() + radius, bounds.bottom());
  87         path.quadTo(bounds.left(), bounds.bottom(), bounds.left(), bounds.bottom() - radius);
  88         path.closeSubpath();
  89
  90         painter.setRenderHint(QPainter::Antialiasing);
  91         painter.fillPath(path, blendedBrush);
  92     } else {
  93         painter.fillRect(bounds, blendedBrush);
  94     }
  95     painter.restore();
  96 }