plasma-framework/declarativeimports/plasmacomponents/qml/private/DualStateButton.qml

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/*
* Copyright (C) 2011 by Daker Fernandes Pinheiro <dakerfp@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
import QtQuick 2.0
import org.kde.plasma.core 0.1 as PlasmaCore
/**
* Private base component for several public components. Any element documented here
* can be used in components inheriting from DualStateButton.
*/
Item {
id: dualButton
// Common API
/**
* If the button is checked, its checked property is true; otherwise false. The property is false by default.
*/
property bool checked
/**
* type:bool
* If the button is pressed, its pressed property is true.
* @see clicked
*/
property alias pressed: mouseArea.pressed
/**
* Emitted when the user clicked a mouse button over the button (or
* tapped on the touch screen)
*/
signal clicked()
// Plasma API
/**
* The text is shown beside the button. By default text is an empty string.
*/
property alias text: label.text // TODO: Not yet part of the common API
property alias view: surfaceLoader.sourceComponent
property alias shadow: shadowLoader.sourceComponent
width: surfaceLoader.width + label.paintedWidth
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height: theme.defaultFont.mSize.height*1.6
// TODO: needs to define if there will be specific graphics for
// disabled buttons
opacity: dualButton.enabled ? 1.0 : 0.5
function released() {
if (dualButton.enabled) {
dualButton.checked = !dualButton.checked;
dualButton.clicked();
}
}
Keys.onReleased: {
if(event.key == Qt.Key_Space ||
event.key == Qt.Key_Return)
released();
}
Loader {
id: shadowLoader
anchors.fill: surfaceLoader
state: (dualButton.enabled && (dualButton.focus || mouseArea.containsMouse)) ? "hover" : "shadow"
}
Loader {
id: surfaceLoader
anchors {
verticalCenter: parent.verticalCenter
left: text ? parent.left : undefined
horizontalCenter: text ? undefined : parent.horizontalCenter
}
}
Text {
id: label
text: dualButton.text
anchors {
top: parent.top
bottom: parent.bottom
left: surfaceLoader.right
right: parent.right
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//FIXME: see how this margin will be set
leftMargin: height/4
}
color: theme.textColor
verticalAlignment: Text.AlignVCenter
}
MouseArea {
id: mouseArea
anchors.fill: parent
hoverEnabled: true
onReleased: dualButton.released();
onPressed: dualButton.forceActiveFocus();
}
}