examples/declarative/qtquick1/touchinteraction/pincharea/flickresize.qml

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  40
  41 import QtQuick 1.1
  42
  43 Rectangle {
  44     width: 640
  45     height: 360
  46     color: "gray"
  47
  48     Flickable {
  49         id: flick
  50         anchors.fill: parent
  51         contentWidth: 500
  52         contentHeight: 500
  53
  54         PinchArea {
  55             width: Math.max(flick.contentWidth, flick.width)
  56             height: Math.max(flick.contentHeight, flick.height)
  57
  58             property real initialWidth
  59             property real initialHeight
  60             onPinchStarted: {
  61                 initialWidth = flick.contentWidth
  62                 initialHeight = flick.contentHeight
  63             }
  64
  65             onPinchUpdated: {
  66                 // adjust content pos due to drag
  67                 flick.contentX += pinch.previousCenter.x - pinch.center.x
  68                 flick.contentY += pinch.previousCenter.y - pinch.center.y
  69
  70                 // resize content
  71                 flick.resizeContent(initialWidth * pinch.scale, initialHeight * pinch.scale, pinch.center)
  72             }
  73
  74             onPinchFinished: {
  75                 // Move its content within bounds.
  76                 flick.returnToBounds()
  77             }
  78
  79             Rectangle {
  80                 width: flick.contentWidth
  81                 height: flick.contentHeight
  82                 color: "white"
  83                 Image {
  84                     anchors.fill: parent
  85                     source: "qt-logo.jpg"
  86                     MouseArea {
  87                         anchors.fill: parent
  88                         onDoubleClicked: {
  89                             flick.contentWidth = 500
  90                             flick.contentHeight = 500
  91                         }
  92                     }
  93                 }
  94             }
  95         }
  96     }
  97 }