textselection.qml Example File

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  import QtQuick 2.0

  Rectangle {
      id: editor
      color: "lightGrey"
      width: 640; height: 480

      Rectangle {
          color: "white"
          anchors.fill: parent
          anchors.margins: 20

          BorderImage {
              id: startHandle
              source: "pics/startHandle.sci"
              opacity: 0.0
              width: 10
              x: edit.positionToRectangle(edit.selectionStart).x - flick.contentX-width
              y: edit.positionToRectangle(edit.selectionStart).y - flick.contentY
              height: edit.positionToRectangle(edit.selectionStart).height
          }

          BorderImage {
              id: endHandle
              source: "pics/endHandle.sci"
              opacity: 0.0
              width: 10
              x: edit.positionToRectangle(edit.selectionEnd).x - flick.contentX
              y: edit.positionToRectangle(edit.selectionEnd).y - flick.contentY
              height: edit.positionToRectangle(edit.selectionEnd).height
          }

          Flickable {
              id: flick

              anchors.fill: parent
              contentWidth: edit.paintedWidth
              contentHeight: edit.paintedHeight
              interactive: true
              clip: true

              function ensureVisible(r) {
                  if (contentX >= r.x)
                      contentX = r.x;
                  else if (contentX+width <= r.x+r.width)
                      contentX = r.x+r.width-width;
                  if (contentY >= r.y)
                      contentY = r.y;
                  else if (contentY+height <= r.y+r.height)
                      contentY = r.y+r.height-height;
              }

              TextEdit {
                  id: edit
                  width: flick.width
                  height: flick.height
                  focus: true
                  wrapMode: TextEdit.Wrap
                  textFormat: TextEdit.RichText

                  onCursorRectangleChanged: flick.ensureVisible(cursorRectangle)

                  text: "<h1>Text Selection</h1>"
                      +"<p>This example is a whacky text selection mechanisms, showing how these can be implemented in the TextEdit element, to cater for whatever style is appropriate for the target platform."
                      +"<p><b>Press-and-hold</b> to select a word, then drag the selection handles."
                      +"<p><b>Drag outside the selection</b> to scroll the text."
                      +"<p><b>Click inside the selection</b> to cut/copy/paste/cancel selection."
                      +"<p>It's too whacky to let you paste if there is no current selection."

              }
          }

          Item {
              id: menu
              opacity: 0.0
              width: 100
              height: 120
              anchors.centerIn: parent

              Rectangle {
                  border.width: 1
                  border.color: "darkBlue"
                  radius: 15
                  color: "#806080FF"
                  anchors.fill: parent
              }

              Column {
                  anchors.centerIn: parent
                  spacing: 8

                  Rectangle {
                      border.width: 1
                      border.color: "darkBlue"
                      color: "#ff7090FF"
                      width: 60
                      height: 16

                      Text { anchors.centerIn: parent; text: "Cut" }

                      MouseArea {
                          anchors.fill: parent
                          onClicked: { edit.cut(); editor.state = "" }
                      }
                  }

                  Rectangle {
                      border.width: 1
                      border.color: "darkBlue"
                      color: "#ff7090FF"
                      width: 60
                      height: 16

                      Text { anchors.centerIn: parent; text: "Copy" }

                      MouseArea {
                          anchors.fill: parent
                          onClicked: { edit.copy(); editor.state = "selection" }
                      }
                  }

                  Rectangle {
                      border.width: 1
                      border.color: "darkBlue"
                      color: "#ff7090FF"
                      width: 60
                      height: 16

                      Text { anchors.centerIn: parent; text: "Paste" }

                      MouseArea {
                          anchors.fill: parent
                          onClicked: { edit.paste(); edit.cursorPosition = edit.selectionEnd; editor.state = "" }
                      }
                  }

                  Rectangle {
                      border.width: 1
                      border.color: "darkBlue"
                      color: "#ff7090FF"
                      width: 60
                      height: 16

                      Text { anchors.centerIn: parent; text: "Deselect" }

                      MouseArea {
                          anchors.fill: parent
                          onClicked: {
                              edit.cursorPosition = edit.selectionEnd;
                              edit.deselect();
                              editor.state = ""
                          }
                      }
                  }
              }
          }
      }

      states: [
          State {
              name: "selection"
              PropertyChanges { target: startHandle; opacity: 1.0 }
              PropertyChanges { target: endHandle; opacity: 1.0 }
          },
          State {
              name: "menu"
              PropertyChanges { target: startHandle; opacity: 0.5 }
              PropertyChanges { target: endHandle; opacity: 0.5 }
              PropertyChanges { target: menu; opacity: 1.0 }
          }
      ]
  }