Qt 5.13 | Qt Quick Demo - Calqlatr

Qt 5.13.2 Reference Documentation

# Qt Quick Demo - Calqlatr

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      import QtQuick 2.0

      Item {
          id: button
          property alias text: textItem.text
          property color color: "#eceeea"

          property bool operator: false
          property bool dimmable: false
          property bool dimmed: false

          width: 30
          height: 50

          Text {
              id: textItem
              font.pixelSize: 48
              wrapMode: Text.WordWrap
              lineHeight: 0.75
              color: (dimmable && dimmed) ? Qt.darker(button.color) : button.color
              Behavior on color { ColorAnimation { duration: 120; easing.type: Easing.OutElastic} }
              states: [
                  State {
                      name: "pressed"
                      when: mouse.pressed && !dimmed
                      PropertyChanges {
                          target: textItem
                          color: Qt.lighter(button.color)
                      }
                  }
              ]
          }

          MouseArea {
              id: mouse
              anchors.fill: parent
              anchors.margins: -5
              onClicked: {
                  if (operator)
                      window.operatorPressed(parent.text)
                  else
                      window.digitPressed(parent.text)
              }
          }

          function updateDimmed() {
              dimmed = window.isButtonDisabled(button.text)
          }

          Component.onCompleted: {
              numPad.buttonPressed.connect(updateDimmed)
              updateDimmed()
          }
      }