summaryrefslogtreecommitdiffstats
path: root/doc/src/snippets/declarative/events.qml
diff options
context:
space:
mode:
Diffstat (limited to 'doc/src/snippets/declarative/events.qml')
-rw-r--r--doc/src/snippets/declarative/events.qml141
1 files changed, 141 insertions, 0 deletions
diff --git a/doc/src/snippets/declarative/events.qml b/doc/src/snippets/declarative/events.qml
new file mode 100644
index 0000000..3dc44f2
--- /dev/null
+++ b/doc/src/snippets/declarative/events.qml
@@ -0,0 +1,141 @@
+/****************************************************************************
+**
+** 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 documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+** the names of its contributors may be used to endorse or promote
+** products derived from this software without specific prior written
+** permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+//![document]
+import QtQuick 1.0
+
+//![parent begin]
+Rectangle {
+//![parent begin]
+
+ id: screen
+ width: 400; height: 500
+
+//! [signal declaration]
+ signal trigger
+ signal send (string notice)
+ signal perform (string task, variant object)
+//! [signal declaration]
+
+//! [signal handler declaration]
+onTrigger: console.log("trigger signal emitted")
+
+onSend: {
+ 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( string person, string notice)
+
+ onSend: {
+ 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( string person, string notice)
+ onSend: 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]