dragselection.qml Example File | Qt Quick 5.12.8

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- dragselection.qml Example File
- Qt 5.12.8 Reference Documentation

# dragselection.qml Example File

views/delegatemodel/dragselection.qml

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     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: DelegateModelGroup { 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
         }
     }