textselection.qml Example File

text/textselection/textselection.qml

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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: "

Text Selection

" +"

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." +"

Press-and-hold to select a word, then drag the selection handles." +"

Drag outside the selection to scroll the text." +"

Click inside the selection to cut/copy/paste/cancel selection." +"

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 } } ] }