dragselection.qml Example File

views/visualdatamodel/dragselection.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 2.0 import QtQml.Models 2.1 Item { id: root width: 320 height: 480 property bool dragging: false Component { id: packageDelegate Package { id: packageRoot MouseArea { id: visibleContainer Package.name: "visible" width: 64 height: 64 enabled: packageRoot.DelegateModel.inSelected drag.target: draggable Item { id: draggable width: 64 height: 64 Drag.active: visibleContainer.drag.active anchors { horizontalCenter: parent.horizontalCenter; verticalCenter: parent.verticalCenter } states: State { when: visibleContainer.drag.active AnchorChanges { target: draggable; anchors { horizontalCenter: undefined; verticalCenter: undefined} } ParentChange { target: selectionView; parent: draggable; x: 0; y: 0 } PropertyChanges { target: root; dragging: true } ParentChange { target: draggable; parent: root } } } DropArea { anchors.fill: parent onEntered: selectedItems.move(0, visualModel.items.get(packageRoot.DelegateModel.itemsIndex), selectedItems.count) } } Item { id: selectionContainer Package.name: "selection" width: 64 height: 64 visible: PathView.onPath } Rectangle { id: content parent: visibleContainer width: 58 height: 58 radius: 8 gradient: Gradient { GradientStop { id: gradientStart; position: 0.0; color: "#8AC953" } GradientStop { id: gradientEnd; position: 1.0; color: "#8BC953" } } border.width: 2 border.color: "#007423" state: root.dragging && packageRoot.DelegateModel.inSelected ? "selected" : "visible" Text { anchors.fill: parent horizontalAlignment: Text.AlignHCenter verticalAlignment: Text.AlignVCenter color: "white" text: modelData font.pixelSize: 18 } Rectangle { anchors { right: parent.right; top: parent.top; margins: 3 } width: 12; height: 12 color: packageRoot.DelegateModel.inSelected ? "black" : "white" radius: 6 border.color: "white" border.width: 2 MouseArea { anchors.fill: parent onClicked: packageRoot.DelegateModel.inSelected = !packageRoot.DelegateModel.inSelected } } states: [ State { name: "selected" ParentChange { target: content; parent: selectionContainer; x: 3; y: 3 } PropertyChanges { target: packageRoot; DelegateModel.inItems: visibleContainer.drag.active } PropertyChanges { target: gradientStart; color: "#017423" } PropertyChanges { target: gradientStart; color: "#007423" } }, State { name: "visible" PropertyChanges { target: packageRoot; DelegateModel.inItems: true } ParentChange { target: content; parent: visibleContainer; x: 3; y: 3 } PropertyChanges { target: gradientStart; color: "#8AC953" } PropertyChanges { target: gradientStart; color: "#8BC953" } } ] transitions: Transition { PropertyAction { target: packageRoot; properties: "DelegateModel.inItems" } ParentAnimation { target: content NumberAnimation { target: content; properties: "x,y"; duration: 500 } } ColorAnimation { targets: [gradientStart, gradientEnd]; duration: 500 } } } } } DelegateModel { id: visualModel model: 35 delegate: packageDelegate groups: VisualDataGroup { id: selectedItems; name: "selected" } Component.onCompleted: parts.selection.filterOnGroup = "selected" } PathView { id: selectionView height: 64 width: 64 model: visualModel.parts.selection path: Path { startX: 0 startY: 0 PathLine { x: 64; y: 64 } } } GridView { id: itemsView anchors { fill: parent } cellWidth: 64 cellHeight: 64 model: visualModel.parts.visible } }