Qt 5.11 | Qt Quick | Qt Quick Examples - externaldraganddrop | DragAndDropTextItem.qml Example File

Qt 5.11.3 Reference Documentation

# DragAndDropTextItem.qml Example File

externaldraganddrop/DragAndDropTextItem.qml

      /****************************************************************************
      **
      ** Copyright (C) 2017 The Qt Company Ltd.
      ** Contact: https://www.qt.io/licensing/
      **
      ** This file is part of the examples of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:BSD$
      ** Commercial License Usage
      ** Licensees holding valid commercial Qt licenses may use this file in
      ** accordance with the commercial license agreement provided with the
      ** Software or, alternatively, in accordance with the terms contained in
      ** a written agreement between you and The Qt Company. For licensing terms
      ** and conditions see https://www.qt.io/terms-conditions. For further
      ** information use the contact form at https://www.qt.io/contact-us.
      **
      ** BSD License Usage
      ** Alternatively, you may use this file under the terms of the BSD license
      ** as follows:
      **
      ** "Redistribution and use in source and binary forms, with or without
      ** modification, are permitted provided that the following conditions are
      ** met:
      **   * Redistributions of source code must retain the above copyright
      **     notice, this list of conditions and the following disclaimer.
      **   * Redistributions in binary form must reproduce the above copyright
      **     notice, this list of conditions and the following disclaimer in
      **     the documentation and/or other materials provided with the
      **     distribution.
      **   * Neither the name of The Qt Company Ltd nor the names of its
      **     contributors may be used to endorse or promote products derived
      **     from this software without specific prior written permission.
      **
      **
      ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
      ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
      ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
      **
      ** $QT_END_LICENSE$
      **
      ****************************************************************************/

      import QtQuick 2.2
      import "../shared" as Examples

      Rectangle {
          id: item
          property string display
          property alias dropEnabled: acceptDropCB.checked
          color: dropArea.containsDrag ? "#CFC" : "#EEE"
          ColorAnimation on color {
              id: rejectAnimation
              from: "#FCC"
              to: "#EEE"
              duration: 1000
          }
          Text {
              anchors.fill: parent
              text: item.display
              wrapMode: Text.WordWrap
          }
          DropArea {
              id: dropArea
              anchors.fill: parent
              keys: ["text/plain"]
              onEntered: if (!acceptDropCB.checked) {
                  drag.accepted = false
                  rejectAnimation.start()
              }
              onDropped: if (drop.hasText && acceptDropCB.checked) {
                  if (drop.proposedAction == Qt.MoveAction || drop.proposedAction == Qt.CopyAction) {
                      item.display = drop.text
                      drop.acceptProposedAction()
                  }
              }
          }
          MouseArea {
              id: mouseArea
              anchors.fill: parent
              drag.target: draggable
          }
          Item {
              id: draggable
              anchors.fill: parent
              Drag.active: mouseArea.drag.active
              Drag.hotSpot.x: 0
              Drag.hotSpot.y: 0
              Drag.mimeData: { "text/plain": item.display }
              Drag.dragType: Drag.Automatic
              Drag.onDragFinished: if (dropAction == Qt.MoveAction) item.display = ""
          }
          Examples.CheckBox {
              id: acceptDropCB
              anchors.right: parent.right
              checked: true
              text: "accept drop"
          }
      }