Qt 4.7: Button.qml Example File (demos/declarative/calculator/Core/Button.qml)

Qt Reference Documentation

# Button.qml Example File

demos/declarative/calculator/Core/Button.qml

     /****************************************************************************
     **
     ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
     ** All rights reserved.
     ** Contact: Nokia Corporation (qt-info@nokia.com)
     **
     ** This file is part of the QtDeclarative module of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:LGPL$
     ** GNU Lesser General Public License Usage
     ** This file may be used under the terms of the GNU Lesser General Public
     ** License version 2.1 as published by the Free Software Foundation and
     ** appearing in the file LICENSE.LGPL included in the packaging of this
     ** file. Please review the following information to ensure the GNU Lesser
     ** General Public License version 2.1 requirements will be met:
     ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
     **
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     ** rights. These rights are described in the Nokia Qt LGPL Exception
     ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
     **
     ** GNU General Public License Usage
     ** Alternatively, this file may be used under the terms of the GNU General
     ** Public License version 3.0 as published by the Free Software Foundation
     ** and appearing in the file LICENSE.GPL included in the packaging of this
     ** file. Please review the following information to ensure the GNU General
     ** Public License version 3.0 requirements will be met:
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     import QtQuick 1.0

     BorderImage {
         id: button

         property alias operation: buttonText.text
         property string color: ""

         signal clicked

         source: "images/button-" + color + ".png"; clip: true
         border { left: 10; top: 10; right: 10; bottom: 10 }

         Rectangle {
             id: shade
             anchors.fill: button; radius: 10; color: "black"; opacity: 0
         }

         Text {
             id: buttonText
             anchors.centerIn: parent; anchors.verticalCenterOffset: -1
             font.pixelSize: parent.width > parent.height ? parent.height * .5 : parent.width * .5
             style: Text.Sunken; color: "white"; styleColor: "black"; smooth: true
         }

         MouseArea {
             id: mouseArea
             anchors.fill: parent
             onClicked: {
                 doOp(operation)
                 button.clicked()
             }
         }

         states: State {
             name: "pressed"; when: mouseArea.pressed == true
             PropertyChanges { target: shade; opacity: .4 }
         }
     }