summaryrefslogtreecommitdiffstats
path: root/doc/src/snippets/declarative/properties.qml
diff options
context:
space:
mode:
Diffstat (limited to 'doc/src/snippets/declarative/properties.qml')
-rw-r--r--doc/src/snippets/declarative/properties.qml315
1 files changed, 315 insertions, 0 deletions
diff --git a/doc/src/snippets/declarative/properties.qml b/doc/src/snippets/declarative/properties.qml
new file mode 100644
index 00000000..a93735fb
--- /dev/null
+++ b/doc/src/snippets/declarative/properties.qml
@@ -0,0 +1,315 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 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]
+
+ //! [inherited properties]
+ width: 320; height: 240
+ color: "lightblue"
+ focus: true
+ //! [inherited properties]
+
+ //! [custom properties]
+ property int counter
+ property real area: 100.45
+ //! [custom properties]
+
+ //! [property types]
+ property int number
+ property real volume: 100.45
+ property date today: "2011-01-01"
+ property color background: "yellow"
+ //! [property types]
+
+
+//! [grouped properties]
+Text {
+ //dot notation
+ font.pixelSize: 12
+ font.bold: true
+}
+
+Text {
+ //group notation
+ font {pixelSize: 12; bold: true}
+}
+//! [grouped properties]
+
+
+//! [property binding]
+Rectangle {
+ width: parent.width
+}
+//! [property binding]
+
+//! [property assignment]
+Rectangle {
+ Component.onCompleted: {
+ width = 150
+ }
+}
+//! [property assignment]
+
+Rectangle {
+ //placeholder slider
+ id: slider
+ property real value
+}
+Rectangle {
+ //placeholder system
+ id: system
+ property real brightness
+}
+//! [binding element]
+Binding {
+ target: system
+ property: "brightness"
+ value: slider.value
+}
+//! [binding element]
+
+Rectangle {
+ //placeholder warning
+ id: warning
+ color: "red"
+}
+//! [PropertyChanges element]
+Rectangle {
+ id: rectangle
+
+ states: State {
+ name: "WARNING"
+ PropertyChanges {
+ target: rectangle
+ color: warning.color
+ }
+ }
+}
+//! [PropertyChanges element]
+
+//! [list property]
+Item {
+ id: multistate
+ states: [
+ State {name: "FETCH"},
+ State {name: "DECODE"},
+ State {name: "EXECUTE"}
+ ]
+}
+//! [list property]
+//! [single property]
+Item {
+ id: monostate
+ states: State {name: "RUNNING"}
+}
+//! [single property]
+
+Item {
+ id: printstate
+//! [print list property]
+ Component.onCompleted: console.log (multistate.states[0].name)
+//! [print list property]
+}
+
+//! [JavaScript sample]
+function calculateArea(width, height) {
+ return (width * height) * 0.5
+}
+
+Rectangle {
+ width: 150; height: 75
+ property real area: calculateArea(width, height)
+ property real parentArea: calculateArea(parent.width,parent.height)
+ color: { if (area > parentArea) "blue"; else "red" }
+}
+//! [JavaScript sample]
+
+//! [id property]
+Rectangle {
+ id: container
+ width: 100; height: 100
+ Rectangle {
+ width: parent.width; height: parent.height
+ }
+}
+Rectangle {
+ width: container.width; height: container.height
+}
+//! [id property]
+
+//! [default property]
+Item {
+ Text {}
+ Rectangle {}
+ Timer {}
+}
+
+Item {
+ //without default property
+ children: [
+ Text {},
+ Rectangle {}
+ ]
+ resources: [
+ Timer {}
+ ]
+}
+//! [default property]
+
+//! [state default]
+State {
+ changes: [
+ PropertyChanges {},
+ PropertyChanges {}
+ ]
+}
+
+State {
+ PropertyChanges {}
+ PropertyChanges {}
+}
+//! [state default]
+
+//! [object binding]
+Rectangle {
+
+ id: parentrectangle
+ gradient:
+ Gradient { //not a child of parentrectangle
+
+ //generates a TypeError
+ //Component.onCompleted: console.log(parent.width)
+ }
+
+ //child of parentrectangle
+ Rectangle {property string name: "childrectangle"}
+
+ //prints "childrectangle"
+ Component.onCompleted: console.log(children[0].name)
+}
+//! [object binding]
+
+//! [list attached property]
+Component {
+ id: listdelegate
+ Text {
+ text: "Hello"
+ color: ListView.isCurrentItem ? "red" : "blue"
+ }
+}
+ListView {
+ delegate: listdelegate
+}
+//! [list attached property]
+
+//! [attached signal handler]
+Item {
+ Keys.onPressed: console.log("Key Press Detected")
+ Component.onCompleted: console.log("Completed initialization")
+}
+//! [attached signal handler]
+
+//! [alias usage]
+Button {
+ id: textbutton
+ buttonLabel: "Click Me!"
+}
+//! [alias usage]
+
+//! [image alias]
+Button {
+ id: imagebutton
+ buttonImage.source: "http://qt.nokia.com/logo.png"
+ buttonLabel: buttonImage.source
+}
+//! [image alias]
+
+Item {
+id: widget
+
+//! [alias complete]
+property alias widgetLabel: label
+
+//will generate an error
+//widgetLabel.text: "Initial text"
+
+//will generate an error
+//property alias widgetLabelText: widgetLabel.text
+
+Component.onCompleted: widgetLabel.text = "Alias completed Initialization"
+//! [alias complete]
+
+ Text {id: label}
+}
+
+//![alias overwrite]
+Rectangle {
+ id: coloredrectangle
+ property alias color: bluerectangle.color
+ color: "red"
+
+ Rectangle {
+ id: bluerectangle
+ color: "#1234ff"
+ }
+
+ Component.onCompleted: {
+ console.log (coloredrectangle.color) //prints "#1234ff"
+ setInternalColor()
+ console.log (coloredrectangle.color) //prints "#111111"
+ coloredrectangle.color = "#884646"
+ console.log (coloredrectangle.color) //prints #884646
+ }
+
+ //internal function that has access to internal properties
+ function setInternalColor() {
+ color = "#111111"
+ }
+}
+//![alias overwrite]
+//! [parent end]
+}
+//! [parent end]
+//! [document]