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author | Qt Continuous Integration System <qt-info@nokia.com> | 2010-12-09 23:18:56 (GMT) |
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committer | Qt Continuous Integration System <qt-info@nokia.com> | 2010-12-09 23:18:56 (GMT) |
commit | dd3859f06f6949b0e16097306f2be7baece41833 (patch) | |
tree | 9928872bb5bacfd96c9c766388ecb715745667aa /doc | |
parent | 3349c76f2f5079736d082b34d834eebf20b5d526 (diff) | |
parent | 3c3dbf89524b84bbbcc1799dec52b81bb11dfcca (diff) | |
download | Qt-dd3859f06f6949b0e16097306f2be7baece41833.zip Qt-dd3859f06f6949b0e16097306f2be7baece41833.tar.gz Qt-dd3859f06f6949b0e16097306f2be7baece41833.tar.bz2 |
Merge branch '4.7' of scm.dev.nokia.troll.no:qt/qt-qml into 4.7-integration
* '4.7' of scm.dev.nokia.troll.no:qt/qt-qml:
Update QtGui bwins def file for QTBUG-15615
highlightFollowsCurrentItem: false was not always honored
ListView: Fix calculation of currentItem position when out of view.
Update QtGui def files
Fix openDatabaseSync() to not create unused directory
Document support for QVariantList and QVariantMap type conversion
Some doc clarification for components and javascript integration
Cursor shouldn't blink while dragging cursor position
Qt.include() docs weren't being picked up by qdoc
Doc: make it clear that "z" affects sibling stacking order.
Diffstat (limited to 'doc')
8 files changed, 336 insertions, 4 deletions
diff --git a/doc/src/declarative/javascriptblocks.qdoc b/doc/src/declarative/javascriptblocks.qdoc index 16d0633..155bd6e 100644 --- a/doc/src/declarative/javascriptblocks.qdoc +++ b/doc/src/declarative/javascriptblocks.qdoc @@ -94,9 +94,8 @@ Both relative and absolute JavaScript URLs can be imported. In the case of a relative URL, the location is resolved relative to the location of the \l {QML Document} that contains the import. If the script file is not accessible, an error will occur. If the JavaScript needs to be fetched from a network -resource, the QML document has a "Loading" -\l {QDeclarativeComponent::status()}{status} until the script has been -downloaded. +resource, the component's \l {QDeclarativeComponent::status()}{status} is set to +"Loading" until the script has been downloaded. Imported JavaScript files are always qualified using the "as" keyword. The qualifier for JavaScript files must be unique, so there is always a one-to-one @@ -143,6 +142,31 @@ As they are shared, stateless library files cannot access QML component instance objects or properties directly, although QML values can be passed as function parameters. + +\section2 Importing One JavaScript File From Another + +If a JavaScript file needs to use functions defined inside another JavaScript file, +the other file can be imported using the \l {QML:Qt::include()}{Qt.include()} +function. This imports all functions from the other file into the current file's +namespace. + +For example, the QML code below left calls \c showCalculations() in \c script.js, +which in turn can call \c factorial() in \c factorial.js, as it has included +\c factorial.js using \l {QML:Qt::include()}{Qt.include()}. + +\table +\row +\o {1,2} \snippet doc/src/snippets/declarative/integrating-javascript/includejs/app.qml 0 +\o \snippet doc/src/snippets/declarative/integrating-javascript/includejs/script.js 0 +\row +\o \snippet doc/src/snippets/declarative/integrating-javascript/includejs/factorial.js 0 +\endtable + +Notice that calling \l {QML:Qt::include()}{Qt.include()} imports all functions from +\c factorial.js into the \c MyScript namespace, which means the QML component can also +access \c factorial() directly as \c MyScript.factorial(). + + \section1 Running JavaScript at Startup It is occasionally necessary to run some imperative code at application (or diff --git a/doc/src/declarative/qtbinding.qdoc b/doc/src/declarative/qtbinding.qdoc index 71f41bc..04b8ca6 100644 --- a/doc/src/declarative/qtbinding.qdoc +++ b/doc/src/declarative/qtbinding.qdoc @@ -426,6 +426,7 @@ By default, QML recognizes the following data types: \o QSize, QSizeF \o QRect, QRectF \o QVariant +\o QVariantList, QVariantMap \o QObject* \o Enumerations declared with Q_ENUMS() \endlist @@ -434,6 +435,37 @@ To allow a custom C++ type to be created or used in QML, the C++ class must be r type using qmlRegisterType(), as shown in the \l {Defining new QML elements} section above. +\section2 JavaScript arrays and objects + +There is built-in support for automatic type conversion between QVariantList and JavaScript +arrays, and QVariantMap and JavaScript objects. + +For example, the function defined in QML below left expects two arguments, an array and an object, and prints +their contents using the standard JavaScript syntax for array and object item access. The C++ code +below right calls this function, passing a QVariantList and a QVariantMap, which are automatically +converted to JavaScript array and object values, repectively: + +\table +\row +\o \snippet doc/src/snippets/declarative/qtbinding/variantlistmap/MyItem.qml 0 +\o \snippet doc/src/snippets/declarative/qtbinding/variantlistmap/main.cpp 0 +\endtable + +This produces output like: + +\code +Array item: 10 +Array item: #00ff00 +Array item: bottles +Object item: language = QML +Object item: released = Tue Sep 21 2010 00:00:00 GMT+1000 (EST) +\endcode + +Similarly, if a C++ type uses a QVariantList or QVariantMap type for a property or method +parameter, the value can be created as a JavaScript array or object in the QML +side, and is automatically converted to a QVariantList or QVariantMap when it is passed to C++. + + \section2 Using enumerations of a custom type To use an enumeration from a custom C++ component, the enumeration must be declared with Q_ENUMS() to @@ -455,7 +487,7 @@ See the \l {Tutorial: Writing QML extensions with C++}{Writing QML extensions wi the \l {Extending QML in C++} reference documentation for more information. -\section2 Automatic type conversion +\section2 Automatic type conversion from strings As a convenience, some basic types can be specified in QML using format strings to make it easier to pass simple values from QML to C++. diff --git a/doc/src/snippets/declarative/integrating-javascript/includejs/app.qml b/doc/src/snippets/declarative/integrating-javascript/includejs/app.qml new file mode 100644 index 0000000..2ecc475 --- /dev/null +++ b/doc/src/snippets/declarative/integrating-javascript/includejs/app.qml @@ -0,0 +1,56 @@ +/**************************************************************************** +** +** Copyright (C) 2010 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." +** $QT_END_LICENSE$ +** +****************************************************************************/ +//![0] +import QtQuick 1.0 +import "script.js" as MyScript + +Item { + width: 100; height: 100 + + MouseArea { + anchors.fill: parent + onClicked: { + MyScript.showCalculations(10) + console.log("Call factorial() from QML:", + MyScript.factorial(10)) + } + } +} +//![0] diff --git a/doc/src/snippets/declarative/integrating-javascript/includejs/factorial.js b/doc/src/snippets/declarative/integrating-javascript/includejs/factorial.js new file mode 100644 index 0000000..0a01e9e --- /dev/null +++ b/doc/src/snippets/declarative/integrating-javascript/includejs/factorial.js @@ -0,0 +1,49 @@ +/**************************************************************************** +** +** Copyright (C) 2010 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." +** $QT_END_LICENSE$ +** +****************************************************************************/ +//![0] +// factorial.js +function factorial(a) { + a = parseInt(a); + if (a <= 0) + return 1; + else + return a * factorial(a - 1); +} +//![0] diff --git a/doc/src/snippets/declarative/integrating-javascript/includejs/script.js b/doc/src/snippets/declarative/integrating-javascript/includejs/script.js new file mode 100644 index 0000000..7380412 --- /dev/null +++ b/doc/src/snippets/declarative/integrating-javascript/includejs/script.js @@ -0,0 +1,48 @@ +/**************************************************************************** +** +** Copyright (C) 2010 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." +** $QT_END_LICENSE$ +** +****************************************************************************/ +//![0] +// script.js +Qt.include("factorial.js") + +function showCalculations(value) { + console.log("Call factorial() from script.js:", + factorial(value)); +} +//![0] diff --git a/doc/src/snippets/declarative/qtbinding/variantlistmap/MyItem.qml b/doc/src/snippets/declarative/qtbinding/variantlistmap/MyItem.qml new file mode 100644 index 0000000..dd59fed --- /dev/null +++ b/doc/src/snippets/declarative/qtbinding/variantlistmap/MyItem.qml @@ -0,0 +1,54 @@ +/**************************************************************************** +** +** Copyright (C) 2010 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." +** $QT_END_LICENSE$ +** +****************************************************************************/ +import QtQuick 1.0 + +//![0] +// MyItem.qml +Item { + function readValues(anArray, anObject) { + for (var i=0; i<anArray.length; i++) + console.log("Array item:", anArray[i]) + + for (var prop in anObject) { + console.log("Object item:", prop, "=", anObject[prop]) + } + } +} +//![0] diff --git a/doc/src/snippets/declarative/qtbinding/variantlistmap/main.cpp b/doc/src/snippets/declarative/qtbinding/variantlistmap/main.cpp new file mode 100644 index 0000000..9986264 --- /dev/null +++ b/doc/src/snippets/declarative/qtbinding/variantlistmap/main.cpp @@ -0,0 +1,67 @@ +/**************************************************************************** +** +** Copyright (C) 2010 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." +** $QT_END_LICENSE$ +** +****************************************************************************/ +#include <QtCore> +#include <QtDeclarative> + +int main(int argc, char *argv[]) { + QApplication app(argc, argv); + +//![0] +// C++ +QDeclarativeView view(QUrl::fromLocalFile("MyItem.qml")); + +QVariantList list; +list << 10 << Qt::green << "bottles"; + +QVariantMap map; +map.insert("language", "QML"); +map.insert("released", QDate(2010, 9, 21)); + +QMetaObject::invokeMethod(view.rootObject(), "readValues", + Q_ARG(QVariant, QVariant::fromValue(list)), + Q_ARG(QVariant, QVariant::fromValue(map))); +//![0] + + view.setSource(QUrl::fromLocalFile("MyItem.qml")); + view.show(); + + return app.exec(); +} + diff --git a/doc/src/snippets/declarative/qtbinding/variantlistmap/variantlistmap.pro b/doc/src/snippets/declarative/qtbinding/variantlistmap/variantlistmap.pro new file mode 100644 index 0000000..68eeaf2 --- /dev/null +++ b/doc/src/snippets/declarative/qtbinding/variantlistmap/variantlistmap.pro @@ -0,0 +1,2 @@ +QT += declarative +SOURCES += main.cpp |