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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the QtDeclarative module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 import Qt 4.7 |
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43 |
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44 Item { |
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45 id: container |
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46 |
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47 property variant scrollArea |
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48 property variant orientation: Qt.Vertical |
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49 |
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50 opacity: 0 |
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51 |
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52 function position() |
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53 { |
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54 var ny = 0; |
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55 if (container.orientation == Qt.Vertical) |
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56 ny = scrollArea.visibleArea.yPosition * container.height; |
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57 else |
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58 ny = scrollArea.visibleArea.xPosition * container.width; |
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59 if (ny > 2) return ny; else return 2; |
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60 } |
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61 |
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62 function size() |
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63 { |
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64 var nh, ny; |
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65 |
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66 if (container.orientation == Qt.Vertical) |
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67 nh = scrollArea.visibleArea.heightRatio * container.height; |
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68 else |
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69 nh = scrollArea.visibleArea.widthRatio * container.width; |
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70 |
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71 if (container.orientation == Qt.Vertical) |
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72 ny = scrollArea.visibleArea.yPosition * container.height; |
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73 else |
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74 ny = scrollArea.visibleArea.xPosition * container.width; |
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75 |
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76 if (ny > 3) { |
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77 var t; |
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78 if (container.orientation == Qt.Vertical) |
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79 t = Math.ceil(container.height - 3 - ny); |
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80 else |
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81 t = Math.ceil(container.width - 3 - ny); |
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82 if (nh > t) return t; else return nh; |
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83 } else return nh + ny; |
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84 } |
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85 |
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86 Rectangle { anchors.fill: parent; color: "Black"; opacity: 0.3 } |
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87 |
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88 BorderImage { |
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89 source: "images/scrollbar.png" |
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90 border { left: 1; right: 1; top: 1; bottom: 1 } |
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91 x: container.orientation == Qt.Vertical ? 2 : position() |
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92 width: container.orientation == Qt.Vertical ? container.width - 4 : size() |
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93 y: container.orientation == Qt.Vertical ? position() : 2 |
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94 height: container.orientation == Qt.Vertical ? size() : container.height - 4 |
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95 } |
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96 |
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97 states: State { |
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98 name: "visible" |
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99 when: container.orientation == Qt.Vertical ? scrollArea.movingVertically : scrollArea.movingHorizontally |
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100 PropertyChanges { target: container; opacity: 1.0 } |
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101 } |
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102 |
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103 transitions: Transition { |
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104 from: "visible"; to: "" |
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105 NumberAnimation { properties: "opacity"; duration: 600 } |
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106 } |
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107 } |