Qt 5.9 | Qt Multimedia | QML Video Example | SeekControl.qml Example File

Qt 5.9.4 Reference Documentation

# SeekControl.qml Example File

multimedia/video/qmlvideo/qml/qmlvideo/SeekControl.qml

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      import QtQuick 2.0

      Item {
          id: seekControl
          height: Math.min(parent.width, parent.height) / 20
          property int duration: 0
          property int playPosition: 0
          property int seekPosition: 0
          property bool enabled: true
          property bool seeking: false

          Rectangle {
              id: background
              anchors.fill: parent
              color: "white"
              opacity: 0.3
              radius: parent.height / 15
          }

          Rectangle {
              id: progressBar
              anchors { left: parent.left; top: parent.top; bottom: parent.bottom }
              width: seekControl.duration == 0 ? 0 : background.width * seekControl.playPosition / seekControl.duration
              color: "black"
              opacity: 0.7
          }

          Text {
              width: 90
              anchors { left: parent.left; top: parent.top; bottom: parent.bottom; leftMargin: 10 }
              horizontalAlignment: Text.AlignLeft
              verticalAlignment: Text.AlignVCenter
              color: "white"
              smooth: true
              text: formatTime(playPosition)
          }

          Text {
              width: 90
              anchors { right: parent.right; top: parent.top; bottom: parent.bottom; rightMargin: 10 }
              horizontalAlignment: Text.AlignRight
              verticalAlignment: Text.AlignVCenter
              color: "white"
              smooth: true
              text: formatTime(duration)
          }

          Rectangle {
              id: progressHandle
              height: parent.height
              width: parent.height / 2
              color: "white"
              opacity: 0.5
              anchors.verticalCenter: progressBar.verticalCenter
              x: seekControl.duration == 0 ? 0 : seekControl.playPosition / seekControl.duration * background.width

              MouseArea {
                  id: mouseArea
                  anchors { horizontalCenter: parent.horizontalCenter; bottom: parent.bottom }
                  height: parent.height
                  width: parent.height * 2
                  enabled: seekControl.enabled
                  drag {
                      target: progressHandle
                      axis: Drag.XAxis
                      minimumX: 0
                      maximumX: background.width
                  }
                  onPressed: {
                      seekControl.seeking = true;
                  }
                  onCanceled: {
                      seekControl.seekPosition = progressHandle.x * seekControl.duration / background.width
                      seekControl.seeking = false
                  }
                  onReleased: {
                      seekControl.seekPosition = progressHandle.x * seekControl.duration / background.width
                      seekControl.seeking = false
                      mouse.accepted = true
                  }
              }
          }

          Timer { // Update position also while user is dragging the progress handle
              id: seekTimer
              repeat: true
              interval: 300
              running: seekControl.seeking
              onTriggered: {
                  seekControl.seekPosition = progressHandle.x*seekControl.duration / background.width
              }
          }

          function formatTime(timeInMs) {
              if (!timeInMs || timeInMs <= 0) return "0:00"
              var seconds = timeInMs / 1000;
              var minutes = Math.floor(seconds / 60)
              seconds = Math.floor(seconds % 60)
              if (seconds < 10) seconds = "0" + seconds;
              return minutes + ":" + seconds
          }
      }