textalignment.qml Example File | Qt Quick 5.9

Qt 5.9 | Qt Quick | Qt Quick Examples - Right to Left | textalignment.qml Example File

Qt 5.9.3 Reference Documentation

# textalignment.qml Example File

righttoleft/textalignment/textalignment.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

      Rectangle {
          id: root
          color: "white"
          //width: containerColumn.width
          //height: containerColumn.height + containerColumn.anchors.topMargin
          width: 320
          height: 480

          property bool mirror: false
          property int pxSz: 18
          property variant horizontalAlignment: undefined

          property variant editorType: ["Plain Text", "Styled Text", "Plain Rich Text", "Italic Rich Text", "Plain TextEdit", "Italic TextEdit", "TextInput"]
          property variant text: ["", " ", "Hello world!", "مرحبا العالم!", "Hello world! Hello!\nHello world! Hello!", "مرحبا العالم! مرحبا! مرحبا العالم! مرحبا!" ,"مرحبا العالم! مرحبا! مرحبا Hello world!\nالعالم! مرحبا!"]
          property variant description: ["empty text", "white-space-only text", "left-to-right text", "right-to-left text", "multi-line left-to-right text", "multi-line right-to-left text", "multi-line bidi text"]
          property variant textComponents: [plainTextComponent, styledTextComponent, richTextComponent, italicRichTextComponent, plainTextEdit, italicTextEdit, textInput]

          function shortText(horizontalAlignment) {

              // all the different QML editors have
              // the same alignment values
              switch (horizontalAlignment) {
              case Text.AlignLeft:
                  return "L";
              case Text.AlignRight:
                  return "R";
              case Text.AlignHCenter:
                  return "C";
              case Text.AlignJustify:
                  return "J";
              default:
                  return "Error";
              }
          }
          Column {
              id: containerColumn
              spacing: 10
              width: editorTypeRow.width
              anchors { top: parent.top; topMargin: 5 }
              ListView {
                  width: 320
                  height: 320
                  id: editorTypeRow
                  model: editorType.length
                  orientation: ListView.Horizontal
                  cacheBuffer: 1000//Load the really expensive ones async if possible
                  delegate: Item {
                      width: editorColumn.width
                      height: editorColumn.height
                      Column {
                          id: editorColumn
                          spacing: 5
                          width: textColumn.width+10
                          Text {
                              text: root.editorType[index]
                              font.pixelSize: 16
                              anchors.horizontalCenter: parent.horizontalCenter
                          }
                          Column {
                              id: textColumn
                              spacing: 5
                              anchors.horizontalCenter: parent.horizontalCenter
                              Repeater {
                                  model: textComponents.length
                                  delegate: textComponents[index]
                              }
                          }
                      }
                  }
              }
              Column {
                  spacing: 2
                  width: parent.width
                  Rectangle {
                      // button
                      height: 50; width: parent.width
                      color: mouseArea.pressed ? "black" : "lightgray"
                      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: mouseArea
                          property int index: 0
                          anchors.fill: parent
                          onClicked: root.mirror = !root.mirror
                      }
                  }
                  Rectangle {
                      // button
                      height: 50; width: parent.width
                      color: mouseArea2.pressed ? "black" : "gray"
                      Column {
                          anchors.centerIn: parent
                          Text {
                              text: {
                                  if (root.horizontalAlignment == undefined)
                                      return "Implict alignment";
                                  switch (root.horizontalAlignment) {
                                  case Text.AlignLeft:
                                      return "Left alignment";
                                  case Text.AlignRight:
                                      return "Right alignment";
                                  case Text.AlignHCenter:
                                      return "Center alignment";
                                  case Text.AlignJustify:
                                      return "Justify alignment";
                                  }
                              }
                              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
                          property int index: 0
                          anchors.fill: parent
                          onClicked: {
                              if (index < 0) {
                                  root.horizontalAlignment = undefined;
                              } else {
                                  root.horizontalAlignment = Math.pow(2, index);
                              }
                              index = (index + 2) % 5 - 1;
                          }
                      }
                  }
              }
          }

          Component {
              id: plainTextComponent
              Text {
                  width: 180
                  text: root.text[index]
                  font.pixelSize: pxSz
                  wrapMode: Text.WordWrap
                  horizontalAlignment: root.horizontalAlignment
                  LayoutMirroring.enabled: root.mirror
                  textFormat: Text.RichText
                  Rectangle {
                      z: -1
                      color: Qt.rgba(0.8, 0.2, 0.2, 0.3)
                      anchors.fill: parent
                  }
                  Text {
                      text: root.description[index]
                      color: Qt.rgba(1,1,1,1.0)
                      anchors.centerIn: parent
                      font.pixelSize: pxSz - 2
                      Rectangle {
                          z: -1
                          color: Qt.rgba(0.3, 0, 0, 0.3)
                          anchors { fill: parent; margins: -3 }
                      }
                  }
                  Text {
                      color: "white"
                      text: shortText(parent.horizontalAlignment)
                      anchors { top: parent.top; right: parent.right; margins: 2 }
                  }
              }
          }

          Component {
              id: styledTextComponent
              Text {
                  width: 180
                  text: root.text[index]
                  font.pixelSize: pxSz
                  wrapMode: Text.WordWrap
                  horizontalAlignment: root.horizontalAlignment
                  LayoutMirroring.enabled: root.mirror
                  textFormat: Text.RichText
                  style: Text.Sunken
                  styleColor: "white"
                  Rectangle {
                      z: -1
                      color: Qt.rgba(0.8, 0.2, 0.2, 0.3)
                      anchors.fill: parent
                  }
                  Text {
                      text: root.description[index]
                      color: Qt.rgba(1,1,1,1.0)
                      anchors.centerIn: parent
                      font.pixelSize: pxSz - 2
                      Rectangle {
                          z: -1
                          color: Qt.rgba(0.3, 0, 0, 0.3)
                          anchors { fill: parent; margins: -3 }
                      }
                  }
                  Text {
                      color: "white"
                      text: shortText(parent.horizontalAlignment)
                      anchors { top: parent.top; right: parent.right; margins: 2 }
                  }
              }
          }

          Component {
              id: richTextComponent
              Text {
                  width: 180
                  text: root.text[index]
                  font.pixelSize: pxSz
                  wrapMode: Text.WordWrap
                  horizontalAlignment: root.horizontalAlignment
                  LayoutMirroring.enabled: root.mirror
                  textFormat: Text.RichText
                  Rectangle {
                      z: -1
                      color: Qt.rgba(0.8, 0.2, 0.2, 0.3)
                      anchors.fill: parent
                  }
                  Text {
                      text: root.description[index]
                      color: Qt.rgba(1,1,1,1.0)
                      anchors.centerIn: parent
                      font.pixelSize: pxSz - 2
                      Rectangle {
                          z: -1
                          color: Qt.rgba(0.3, 0, 0, 0.3)
                          anchors { fill: parent; margins: -3 }
                      }
                  }
                  Text {
                      color: "white"
                      text: shortText(parent.horizontalAlignment)
                      anchors { top: parent.top; right: parent.right; margins: 2 }
                  }
              }
          }

          Component {
              id: italicRichTextComponent
              Text {
                  width: 180
                  text: "<i>" + root.text[index] + "</i>"
                  font.pixelSize: pxSz
                  wrapMode: Text.WordWrap
                  horizontalAlignment: root.horizontalAlignment
                  LayoutMirroring.enabled: root.mirror
                  textFormat: Text.RichText
                  property variant backgroundColor: Qt.rgba(0.8, 0.2, 0.2, 0.3)
                  Rectangle {
                      z: -1
                      color: parent.backgroundColor
                      anchors.fill: parent
                  }
                  Text {
                      text: root.description[index]
                      color: Qt.rgba(1,1,1,1.0)
                      anchors.centerIn: parent
                      font.pixelSize: pxSz - 2
                      Rectangle {
                          z: -1
                          color: Qt.rgba(0.3, 0, 0, 0.3)
                          anchors { fill: parent; margins: -3 }
                      }
                  }
                  Text {
                      color: "white"
                      text: shortText(parent.horizontalAlignment)
                      anchors { top: parent.top; right: parent.right; margins: 2 }
                  }
              }
          }

          Component {
              id: plainTextEdit
              TextEdit {
                  width: 180
                  text: root.text[index]
                  font.pixelSize: pxSz
                  cursorVisible: true
                  wrapMode: TextEdit.WordWrap
                  horizontalAlignment: root.horizontalAlignment
                  LayoutMirroring.enabled: root.mirror
                  Rectangle {
                      z: -1
                      color: Qt.rgba(0.5, 0.5, 0.2, 0.3)
                      anchors.fill: parent
                  }
                  Text {
                      text: root.description[index]
                      color: Qt.rgba(1,1,1,1.0)
                      anchors.centerIn: parent
                      font.pixelSize: pxSz - 2
                      Rectangle {
                          z: -1
                          color: Qt.rgba(0.3, 0, 0, 0.3)
                          anchors { fill: parent; margins: -3 }
                      }
                  }
                  Text {
                      color: "white"
                      text: shortText(parent.horizontalAlignment)
                      anchors { top: parent.top; right: parent.right; margins: 2 }
                  }
              }
          }

          Component {
              id: italicTextEdit
              TextEdit {
                  width: 180
                  text: "<i>" + root.text[index] + "<i>"
                  font.pixelSize: pxSz
                  cursorVisible: true
                  wrapMode: TextEdit.WordWrap
                  textFormat: TextEdit.RichText
                  horizontalAlignment: root.horizontalAlignment
                  LayoutMirroring.enabled: root.mirror
                  Rectangle {
                      z: -1
                      color: Qt.rgba(0.5, 0.5, 0.2, 0.3)
                      anchors.fill: parent
                  }
                  Text {
                      text: root.description[index]
                      color: Qt.rgba(1,1,1,1.0)
                      anchors.centerIn: parent
                      font.pixelSize: pxSz - 2
                      Rectangle {
                          z: -1
                          color: Qt.rgba(0.3, 0, 0, 0.3)
                          anchors { fill: parent; margins: -3 }
                      }
                  }
                  Text {
                      color: "white"
                      text: shortText(parent.horizontalAlignment)
                      anchors { top: parent.top; right: parent.right; margins: 2 }
                  }
              }
          }

          Component {
              id: textInput
              Item {
                  width: 180
                  height: textInput.text.length > 20 ? 3*textInput.height : textInput.height
                  TextInput {
                      id: textInput
                      width: 180
                      text: root.text[index]
                      font.pixelSize: pxSz
                      cursorVisible: true
                      horizontalAlignment: root.horizontalAlignment
                      LayoutMirroring.enabled: root.mirror
                      Rectangle {
                          z: -1
                          color: Qt.rgba(0.6, 0.4, 0.2, 0.3)
                          anchors.fill: parent
                      }
                      Text {
                          text: root.description[index]
                          color: Qt.rgba(1,1,1,1.0)
                          anchors.centerIn: parent
                          font.pixelSize: pxSz - 2
                          Rectangle {
                              z: -1
                              color: Qt.rgba(0.3, 0, 0, 0.3)
                              anchors { fill: parent; margins: -3 }
                          }
                      }
                      Text {
                          color: "white"
                          text: shortText(parent.horizontalAlignment)
                          anchors { top: parent.top; right: parent.right; margins: 2 }
                      }
                  }
              }
          }
      }