Qt 5.7 | Qt Quick | Qt Quick Examples - Right to Left | layoutdirection.qml Example File

Qt 5.7.1 Reference Documentation

# layoutdirection.qml Example File

righttoleft/layoutdirection/layoutdirection.qml

      /****************************************************************************
      **
      ** Copyright (C) 2015 The Qt Company Ltd.
      ** Contact: http://www.qt.io/licensing/
      **
      ** This file is part of the examples of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:BSD$
      ** 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.
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      **     contributors may be used to endorse or promote products derived
      **     from this software without specific prior written permission.
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      import QtQuick 2.0

      Rectangle {
          id: root
          property bool mirror
          property int direction: Qt.application.layoutDirection
          LayoutMirroring.enabled: mirror
          LayoutMirroring.childrenInherit: true
          width: 320
          height: 480
          Column {
              id: columnA
              spacing: 10
              x: 10
              y: 10
              width: 140

              Item {
                  id: rowCell
              }
              Text {
                  text: "Row"
                  anchors.horizontalCenter: parent.horizontalCenter
              }

              Row {
                  layoutDirection: root.direction
                  spacing: 10
                  move: Transition {
                      NumberAnimation {
                          properties: "x"
                      }
                  }
                  Repeater {
                      model: 3
                      Loader {
                          property int value: index
                          sourceComponent: positionerDelegate
                      }
                  }
              }

              Text {
                  text: "Grid"
                  anchors.horizontalCenter: parent.horizontalCenter
              }

              Grid {
                  layoutDirection: root.direction
                  spacing: 10; columns: 3
                  move: Transition {
                      NumberAnimation {
                          properties: "x"
                      }
                  }
                  Repeater {
                      model: 8
                      Loader {
                          property int value: index
                          sourceComponent: positionerDelegate
                      }
                  }
              }

              Text {
                  text: "Flow"
                  anchors.horizontalCenter: parent.horizontalCenter
              }

              Flow {
                  layoutDirection: root.direction
                  spacing: 10; width: parent.width
                  move: Transition {
                      NumberAnimation {
                          properties: "x"
                      }
                  }
                  Repeater {
                      model: 8
                      Loader {
                          property int value: index
                          sourceComponent: positionerDelegate
                      }
                  }
              }
          }
          Column {
              id: columnB
              spacing: 10
              x: 160
              y: 10

              Text {
                  text: "ListView"
                  anchors.horizontalCenter: parent.horizontalCenter
              }

              ListView {
                  id: listView
                  clip: true
                  width: parent.width; height: 40
                  layoutDirection: root.direction
                  orientation: Qt.Horizontal
                  model: 48
                  delegate: viewDelegate
              }

              Text {
                  text: "GridView"
                  anchors.horizontalCenter: parent.horizontalCenter
              }

              GridView {
                  clip: true
                  width: 150; height: 160
                  cellWidth: 50; cellHeight: 50
                  layoutDirection: root.direction
                  model: 48
                  delegate: viewDelegate
              }

              Rectangle {
                  height: 50; width: parent.width
                  color: mouseArea.pressed ? "black" : "gray"
                  Column {
                      anchors.centerIn: parent
                      Text {
                          text: root.direction ? "Right to left" : "Left to right"
                          color: "white"
                          font.pixelSize: 16
                          anchors.horizontalCenter: parent.horizontalCenter
                      }
                      Text {
                          text: "(click here to toggle)"
                          color: "white"
                          font.pixelSize: 10
                          font.italic: true
                          anchors.horizontalCenter: parent.horizontalCenter
                      }
                  }
                  MouseArea {
                      id: mouseArea
                      anchors.fill: parent
                      onClicked: {
                          if (root.direction == Qt.LeftToRight) {
                              root.direction = Qt.RightToLeft;
                          } else {
                              root.direction = Qt.LeftToRight;
                          }
                      }
                  }
              }

              Rectangle {
                  height: 50; width: parent.width
                  color: mouseArea2.pressed ? "black" : "gray"
                  Column {
                      anchors.centerIn: parent
                      Text {
                          text: root.mirror ? "Mirrored" : "Not mirrored"
                          color: "white"
                          font.pixelSize: 16
                          anchors.horizontalCenter: parent.horizontalCenter
                      }
                      Text {
                          text: "(click here to toggle)"
                          color: "white"
                          font.pixelSize: 10
                          font.italic: true
                          anchors.horizontalCenter: parent.horizontalCenter
                      }
                  }
                  MouseArea {
                      id: mouseArea2
                      anchors.fill: parent
                      onClicked: {
                          root.mirror = !root.mirror;
                      }
                  }
              }
          }

          Component {
              id: positionerDelegate
              Rectangle {
                  width: 40; height: 40
                  color: Qt.rgba(0.8/(parent.value+1),0.8/(parent.value+1),0.8/(parent.value+1),1.0)
                  Text {
                      text: parent.parent.value+1
                      color: "white"
                      font.pixelSize: 18
                      anchors.centerIn: parent
                  }
              }
          }
          Component {
              id: viewDelegate
              Item {
                  width: (listView.effectiveLayoutDirection == Qt.LeftToRight  ? (index == 48 - 1) : (index == 0)) ? 40 : 50
                  Rectangle {
                      width: 40; height: 40
                      color: Qt.rgba(0.5+(48 - index)*Math.random()/48,
                                     0.3+index*Math.random()/48,
                                     0.3*Math.random(),
                                     1.0)
                      Text {
                          text: index+1
                          color: "white"
                          font.pixelSize: 18
                          anchors.centerIn: parent
                      }
                  }
              }
          }
      }