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| ** This file is part of the examples of the Qt Toolkit. |
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| ****************************************************************************/ |
| |
| import QtQuick 2.2 |
| |
| Item { |
| id: container |
| |
| property variant scrollArea |
| property int orientation: Qt.Vertical |
| |
| opacity: 0 |
| |
| function position() |
| { |
| var ny = 0; |
| if (container.orientation == Qt.Vertical) |
| ny = scrollArea.visibleArea.yPosition * container.height; |
| else |
| ny = scrollArea.visibleArea.xPosition * container.width; |
| |
| if (ny > 2) |
| return ny; |
| else |
| return 2; |
| } |
| |
| function size() |
| { |
| var nh, ny; |
| |
| if (container.orientation == Qt.Vertical) |
| nh = scrollArea.visibleArea.heightRatio * container.height; |
| else |
| nh = scrollArea.visibleArea.widthRatio * container.width; |
| |
| if (container.orientation == Qt.Vertical) |
| ny = scrollArea.visibleArea.yPosition * container.height; |
| else |
| ny = scrollArea.visibleArea.xPosition * container.width; |
| |
| if (ny > 3) { |
| var t; |
| if (container.orientation == Qt.Vertical) |
| t = Math.ceil(container.height - 3 - ny); |
| else |
| t = Math.ceil(container.width - 3 - ny); |
| if (nh > t) |
| return t; |
| else |
| return nh; |
| } else |
| return nh + ny; |
| } |
| |
| Rectangle { anchors.fill: parent; color: "Black"; opacity: 0.3 } |
| |
| BorderImage { |
| source: "images/scrollbar.png" |
| border { left: 1; right: 1; top: 1; bottom: 1 } |
| x: container.orientation == Qt.Vertical ? 2 : position() |
| y: container.orientation == Qt.Vertical ? position() : 2 |
| width: container.orientation == Qt.Vertical ? container.width - 4 : size() |
| height: container.orientation == Qt.Vertical ? size() : container.height - 4 |
| } |
| |
| states: State { |
| name: "visible" |
| when: container.orientation == Qt.Vertical ? |
| scrollArea.movingVertically : |
| scrollArea.movingHorizontally |
| PropertyChanges { target: container; opacity: 1.0 } |
| } |
| |
| transitions: Transition { |
| from: "visible"; to: "" |
| NumberAnimation { properties: "opacity"; duration: 600 } |
| } |
| } |