plasma-framework/declarativeimports/plasmacomponents/platformcomponents/touch/ToolButton.qml

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/*
* Copyright (C) 2011 by Daker Fernandes Pinheiro <dakerfp@gmail.com>
* Copyright (C) 2011 by Marco Martin <mart@kde.org>
*
* 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 1.1
import org.kde.plasma.core 0.1 as PlasmaCore
import "private" as Private
Item {
id: button
// Commmon API
property bool flat: true
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property bool checked: defaultAction ? defaultAction.checked : false
property bool checkable: defaultAction ? defaultAction.checkable : false
property alias pressed: mouse.pressed
property alias text: label.text
property alias iconSource: icon.source
property alias font: label.font
signal clicked()
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// Plasma extensiuons
property QtObject defaultAction
onFlatChanged: {
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if (!flat) {
delegate.opacity = 1
}
}
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enabled: defaultAction==undefined||defaultAction.enabled
implicitWidth: {
if (label.paintedWidth == 0) {
return implicitHeight
} else {
return Math.max(theme.defaultFont.mSize.width*12, icon.width + label.paintedWidth + delegate.margins.left + delegate.margins.right) + ((icon.valid) ? delegate.margins.left : 0)
}
}
implicitHeight: Math.max(theme.defaultFont.mSize.height*1.6, Math.max(icon.height, label.paintedHeight) + delegate.margins.top/2 + delegate.margins.bottom/2)
// TODO: needs to define if there will be specific graphics for
// disabled buttons
opacity: enabled ? 1.0 : 0.5
Keys.onSpacePressed: internal.userPressed = true
Keys.onReturnPressed: internal.userPressed = true
Keys.onReleased: {
internal.userPressed = false
if (event.key == Qt.Key_Space ||
event.key == Qt.Key_Return)
internal.clickButton()
}
QtObject {
id: internal
property bool userPressed: false
function clickButton()
{
if (!button.enabled) {
return
}
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if (defaultAction && defaultAction.checkable) {
defaultAction.checked = !defaultAction.checked
} else if (button.checkable) {
button.checked = !button.checked
}
button.clicked()
button.forceActiveFocus()
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if (defaultAction) {
defaultAction.trigger()
}
}
}
Loader {
id: delegate
anchors.fill:parent
property QtObject margins: item.margins
sourceComponent: {
if (label.paintedWidth == 0 && !flat) {
return roundButtonComponent
} else {
return buttonComponent
}
}
}
Component {
id: buttonComponent
Item {
anchors.fill: parent
property alias margins: surface.margins
ButtonShadow {
id: shadow
anchors.fill: parent
visible: !flat
state: (internal.userPressed || checked) ? "hidden" : "shadow"
}
PlasmaCore.FrameSvgItem {
id: surface
anchors.fill: parent
imagePath: "widgets/button"
prefix: (internal.userPressed || checked) ? "pressed" : "normal"
//internal: if there is no hover status, don't paint on mouse over in touchscreens
opacity: (internal.userPressed || checked || !flat || (shadow.hasOverState && mouse.containsMouse)) ? 1 : 0
Behavior on opacity {
PropertyAnimation { duration: 250 }
}
}
}
}
Component {
id: roundButtonComponent
Item {
anchors.fill: parent
property QtObject margins: QtObject {
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property int left: 8
property int top: 8
property int right: 8
property int bottom: 8
}
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RoundShadow {
anchors.fill: parent
state: (internal.userPressed || checked) ? "hidden" : "shadow"
}
PlasmaCore.Svg {
id: buttonSvg
imagePath: "widgets/actionbutton"
}
PlasmaCore.SvgItem {
id: buttonItem
svg: buttonSvg
elementId: (internal.userPressed || checked) ? "pressed" : "normal"
width: parent.height
height: width
}
}
}
Item {
anchors {
fill: parent
leftMargin: delegate.margins.left
topMargin: delegate.margins.top
rightMargin: delegate.margins.right
bottomMargin: delegate.margins.bottom
}
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scale: internal.userPressed ? 0.9 : 1
Behavior on scale {
PropertyAnimation { duration: 100 }
}
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Private.IconLoader {
id: icon
anchors {
verticalCenter: parent.verticalCenter
left: label.text ? parent.left : undefined
horizontalCenter: label.text ? undefined : parent.horizontalCenter
}
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width: label.text ? implicitWidth : roundToStandardSize(parent.width)
height: width
}
Text {
id: label
//FIXME: why this is needed?
onPaintedWidthChanged: {
icon.anchors.horizontalCenter = label.paintedWidth > 0 ? undefined : icon.parent.horizontalCenter
icon.anchors.left = label.paintedWidth > 0 ? icon.parent.left : undefined
}
anchors {
top: parent.top
bottom: parent.bottom
left: icon.valid ? icon.right : parent.left
right: parent.right
}
font.capitalization: theme.defaultFont.capitalization
font.family: theme.defaultFont.family
font.italic: theme.defaultFont.italic
font.letterSpacing: theme.defaultFont.letterSpacing
font.pointSize: theme.defaultFont.pointSize
font.strikeout: theme.defaultFont.strikeout
font.underline: theme.defaultFont.underline
font.weight: theme.defaultFont.weight
font.wordSpacing: theme.defaultFont.wordSpacing
color: theme.buttonTextColor
horizontalAlignment: icon.valid ? Text.AlignLeft : Text.AlignHCenter
verticalAlignment: Text.AlignVCenter
}
}
MouseArea {
id: mouse
anchors.fill: parent
hoverEnabled: true
onPressed: internal.userPressed = true
onReleased: internal.userPressed = false
onClicked: internal.clickButton()
}
}