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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
//![document]
import QtQuick
//![parent begin]
Rectangle {
//![parent begin]
id: screen
width: 400; height: 500
//! [signal declaration]
signal trigger
signal send(notice: string)
signal perform(task: string, object: variant)
//! [signal declaration]
//! [signal handler declaration]
onTrigger: console.log("trigger signal emitted")
onSend: (notice)=> {
console.log("send signal emitted with notice: " + notice)
}
onPerform: console.log("perform signal emitted")
//! [signal handler declaration]
//! [automatic signals]
Rectangle {
id: sprite
width: 25; height: 25
x: 50; y: 15
onXChanged: console.log("x property changed, emitted xChanged signal")
onYChanged: console.log("y property changed, emitted yChanged signal")
}
//! [automatic signals]
//! [signal emit]
Rectangle {
id: messenger
signal send(person: string, notice: string)
onSend: (person, notice)=> {
console.log("For " + person + ", the notice is: " + notice)
}
Component.onCompleted: messenger.send("Tom", "the door is ajar.")
}
//! [signal emit]
//! [connect method]
Rectangle {
id: relay
signal send(person: string, notice: string)
onSend: (person, notice)=> console.log("Send signal to: " + person + ", " + notice)
Component.onCompleted: {
relay.send.connect(sendToPost)
relay.send.connect(sendToTelegraph)
relay.send.connect(sendToEmail)
relay.send("Tom", "Happy Birthday")
}
function sendToPost(person, notice) {
console.log("Sending to post: " + person + ", " + notice)
}
function sendToTelegraph(person, notice) {
console.log("Sending to telegraph: " + person + ", " + notice)
}
function sendToEmail(person, notice) {
console.log("Sending to email: " + person + ", " + notice)
}
}
//! [connect method]
//! [forward signal]
Rectangle {
id: forwarder
width: 100; height: 100
signal send()
onSend: console.log("Send clicked")
MouseArea {
id: mousearea
anchors.fill: parent
onClicked: console.log("MouseArea clicked")
}
Component.onCompleted: {
mousearea.clicked.connect(send)
}
}
//! [forward signal]
//! [connect method]
//![parent end]
}
//![parent end]
//![document]
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