diff options
Diffstat (limited to 'doc/src/snippets')
37 files changed, 400 insertions, 72 deletions
diff --git a/doc/src/snippets/code/doc_src_deployment.qdoc b/doc/src/snippets/code/doc_src_deployment.qdoc index 3b0cda1..48e9ac6 100644 --- a/doc/src/snippets/code/doc_src_deployment.qdoc +++ b/doc/src/snippets/code/doc_src_deployment.qdoc @@ -463,7 +463,8 @@ vendorinfo = \ "%{\"Example Localized Vendor\"}" \ ":\"Example Vendor\"" -default_deployment.pkg_prerules = vendorinfo +my_deployment.pkg_prerules = vendorinfo +DEPLOYMENT += my_deployment //! [56] //! [57] @@ -471,7 +472,9 @@ supported_platforms = \ "; This demo only supports S60 5.0" \ "[0x1028315F],0,0,0,{\"S60ProductID\"}" -default_deployment.pkg_prerules += supported_platforms +default_deployment.pkg_prerules -= pkg_platform_dependencies +my_deployment.pkg_prerules += supported_platforms +DEPLOYMENT += my_deployment //! [57] //! [58] diff --git a/doc/src/snippets/code/doc_src_emb-pointer.qdoc b/doc/src/snippets/code/doc_src_emb-pointer.qdoc index 9661ae5..0d66e18 100644 --- a/doc/src/snippets/code/doc_src_emb-pointer.qdoc +++ b/doc/src/snippets/code/doc_src_emb-pointer.qdoc @@ -77,7 +77,10 @@ export QWS_MOUSE_PROTO="Vr41xx:press=500:/dev/misc/ts" //! [7] -./configure -L <path to tslib library> -I <path to tslib headers> +.... +QMAKE_CFLAGS += -I<path to tslib headers> +QMAKE_LFLAGS += -L<path to tslib library> -Wl,-rpath-link=<path to tslib library> +.... //! [7] diff --git a/doc/src/snippets/code/doc_src_qmake-manual.qdoc b/doc/src/snippets/code/doc_src_qmake-manual.qdoc index 5a04420..5789662 100644 --- a/doc/src/snippets/code/doc_src_qmake-manual.qdoc +++ b/doc/src/snippets/code/doc_src_qmake-manual.qdoc @@ -886,7 +886,7 @@ TARGET.CAPABILITY += AllFiles //! [133] //! [134] -TARGET.CAPABILITY = ALL -TCB +TARGET.CAPABILITY = ALL -TCB -DRM -AllFiles //! [134] //! [135] @@ -933,7 +933,9 @@ DEPLOYMENT += somelib justdep //! [140] //! [141] -default_deployment.pkg_prerules = "[0x11223344],0,0,0,{\"SomeSpecificDeviceID\"}" +default_deployment.pkg_prerules -= pkg_platform_dependencies +my_deployment.pkg_prerules = "[0x11223344],0,0,0,{\"SomeSpecificDeviceID\"}" +DEPLOYMENT += my_deployment //! [141] //! [142] @@ -982,3 +984,22 @@ MYVARIABLES = LIB addMMPRules(MYCONDITIONS, MYVARIABLES) //! [148] + +//! [149] +SUBDIRS += my_executable my_library +my_executable.subdir = app +my_executable.depends = my_library +my_library.subdir = lib +//! [149] + +//! [150] +symbian { + SUBDIRS += emulator_dll + emulator_dll.condition = WINSCW +} +//! [150] + +//! [151] +RSS_RULES.service_list += "uid = 0x12345678; datatype_list = \{\}; opaque_data = r_my_icon;" +RSS_RULES.footer +="RESOURCE CAPTION_AND_ICON_INFO r_my_icon \{ icon_file =\"$$PWD/my_icon.svg\"; \}" +//! [151] diff --git a/doc/src/snippets/code/src.qdbus.qdbuspendingcall.cpp b/doc/src/snippets/code/src.qdbus.qdbuspendingcall.cpp index 94a9f68..2867bd5a 100644 --- a/doc/src/snippets/code/src.qdbus.qdbuspendingcall.cpp +++ b/doc/src/snippets/code/src.qdbus.qdbuspendingcall.cpp @@ -61,5 +61,6 @@ void MyClass::callFinishedSlot(QDBusPendingCallWatcher *call) QByteArray data = reply.argumentAt<1>(); showReply(text, data); } + call->deleteLater(); } //! [1] diff --git a/doc/src/snippets/code/src_corelib_kernel_qmetatype.cpp b/doc/src/snippets/code/src_corelib_kernel_qmetatype.cpp index bff72a0..19e37ba 100644 --- a/doc/src/snippets/code/src_corelib_kernel_qmetatype.cpp +++ b/doc/src/snippets/code/src_corelib_kernel_qmetatype.cpp @@ -108,3 +108,8 @@ int id = qRegisterMetaType<MyStruct>(); int id = qMetaTypeId<QString>(); // id is now QMetaType::QString id = qMetaTypeId<MyStruct>(); // compile error if MyStruct not declared //! [8] + +//! [9] +typedef QString CustomString; +qRegisterMetaType<CustomString>("CustomString"); +//! [9] diff --git a/doc/src/snippets/code/src_corelib_kernel_qobject.cpp b/doc/src/snippets/code/src_corelib_kernel_qobject.cpp index 2d86f8c..77c67ab 100644 --- a/doc/src/snippets/code/src_corelib_kernel_qobject.cpp +++ b/doc/src/snippets/code/src_corelib_kernel_qobject.cpp @@ -374,10 +374,13 @@ Q_PROPERTY(type name READ getFunction [WRITE setFunction] [RESET resetFunction] + [NOTIFY notifySignal] [DESIGNABLE bool] [SCRIPTABLE bool] [STORED bool] - [USER bool]) + [USER bool] + [CONSTANT] + [FINAL]) //! [36] diff --git a/doc/src/snippets/code/src_gui_image_qicon.cpp b/doc/src/snippets/code/src_gui_image_qicon.cpp index df1fa82..e0dcfa6 100644 --- a/doc/src/snippets/code/src_gui_image_qicon.cpp +++ b/doc/src/snippets/code/src_gui_image_qicon.cpp @@ -56,8 +56,8 @@ void MyWidget::drawIcon(QPainter *painter, QPoint pos) QPixmap pixmap = icon.pixmap(QSize(22, 22), isEnabled() ? QIcon::Normal : QIcon::Disabled, - isOn() ? QIcon::On - : QIcon::Off); + isChecked() ? QIcon::On + : QIcon::Off); painter->drawPixmap(pos, pixmap); } //! [2] diff --git a/doc/src/snippets/code/src_gui_text_qtextlayout.cpp b/doc/src/snippets/code/src_gui_text_qtextlayout.cpp index ad5725e..13040ea 100644 --- a/doc/src/snippets/code/src_gui_text_qtextlayout.cpp +++ b/doc/src/snippets/code/src_gui_text_qtextlayout.cpp @@ -42,7 +42,6 @@ //! [0] int leading = fontMetrics.leading(); qreal height = 0; -qreal widthUsed = 0; textLayout.beginLayout(); while (1) { QTextLine line = textLayout.createLine(); @@ -53,7 +52,6 @@ while (1) { height += leading; line.setPosition(QPointF(0, height)); height += line.height(); - widthUsed = qMax(widthUsed, line.naturalTextWidth()); } textLayout.endLayout(); //! [0] diff --git a/doc/src/snippets/code/src_network_access_qnetworkaccessmanager.cpp b/doc/src/snippets/code/src_network_access_qnetworkaccessmanager.cpp index 5db6676..1853650 100644 --- a/doc/src/snippets/code/src_network_access_qnetworkaccessmanager.cpp +++ b/doc/src/snippets/code/src_network_access_qnetworkaccessmanager.cpp @@ -69,3 +69,12 @@ networkAccessManager->setConfiguration(manager.defaultConfiguration()); //! [3] networkAccessManager->setConfiguration(QNetworkConfiguration()); //! [3] + +//! [4] +networkAccessManager->setNetworkAccessible(QNetworkAccessManager::NotAccessible); +//! [4] + +//! [5] +networkAccessManager->setNetworkAccessible(QNetworkAccessManager::Accessible); +//! [5] + diff --git a/doc/src/snippets/declarative/GroupBox.qml b/doc/src/snippets/declarative/GroupBox.qml deleted file mode 100644 index 6c5431e..0000000 --- a/doc/src/snippets/declarative/GroupBox.qml +++ /dev/null @@ -1,15 +0,0 @@ -import Qt 4.6 - -ContentWrapper { - id: container; width: parent.width; height: contents.height - children: [ - Rectangle { - width: parent.width; height: contents.height - color: "white"; pen.width: 2; pen.color: "#adaeb0"; radius: 10 - Column { - id: layout; width: parent.width; margin: 5; spacing: 2 - Content { } - } - } - ] -} diff --git a/doc/src/snippets/declarative/border-image.qml b/doc/src/snippets/declarative/border-image.qml index c4215cd..9c4247e 100644 --- a/doc/src/snippets/declarative/border-image.qml +++ b/doc/src/snippets/declarative/border-image.qml @@ -1,4 +1,4 @@ -import Qt 4.6 +import Qt 4.7 Rectangle { id: page @@ -9,23 +9,21 @@ Rectangle { anchors.centerIn: parent spacing: 50 //! [0] - BorderImage { - width: 180; height: 180 - border.left: 30; border.top: 30 - border.right: 30; border.bottom: 30 - horizontalTileMode: BorderImage.Stretch - verticalTileMode: BorderImage.Stretch - source: "content/colors.png" - } +BorderImage { + width: 180; height: 180 + border { left: 30; top: 30; right: 30; bottom: 30 } + horizontalTileMode: BorderImage.Stretch + verticalTileMode: BorderImage.Stretch + source: "content/colors.png" +} - BorderImage { - width: 180; height: 180 - border.left: 30; border.top: 30 - border.right: 30; border.bottom: 30 - horizontalTileMode: BorderImage.Round - verticalTileMode: BorderImage.Round - source: "content/colors.png" - } +BorderImage { + width: 180; height: 180 + border { left: 30; top: 30; right: 30; bottom: 30 } + horizontalTileMode: BorderImage.Round + verticalTileMode: BorderImage.Round + source: "content/colors.png" +} //! [0] } } diff --git a/doc/src/snippets/declarative/codingconventions/dotproperties.qml b/doc/src/snippets/declarative/codingconventions/dotproperties.qml new file mode 100644 index 0000000..942b0b1 --- /dev/null +++ b/doc/src/snippets/declarative/codingconventions/dotproperties.qml @@ -0,0 +1,28 @@ +import Qt 4.7 + +Item { + +//! [0] +Rectangle { + anchors.left: parent.left; anchors.top: parent.top; anchors.right: parent.right; anchors.leftMargin: 20 +} + +Text { + text: "hello" + font.bold: true; font.italic: true; font.pixelSize: 20; font.capitalization: Font.AllUppercase +} + +//! [0] + +//! [1] +Rectangle { + anchors { left: parent.left; top: parent.top; right: parent.right; leftMargin: 20 } +} + +Text { + text: "hello" + font { bold: true; italic: true; pixelSize: 20; capitalization: Font.AllUppercase } +} +//! [1] + +} diff --git a/doc/src/snippets/declarative/codingconventions/javascript-imports.qml b/doc/src/snippets/declarative/codingconventions/javascript-imports.qml new file mode 100644 index 0000000..417366c --- /dev/null +++ b/doc/src/snippets/declarative/codingconventions/javascript-imports.qml @@ -0,0 +1,7 @@ +import Qt 4.7 + +//![0] +import "myscript.js" as Script + +Rectangle { color: "blue"; width: Script.calculateWidth(parent) } +//![0] diff --git a/doc/src/snippets/declarative/codingconventions/javascript.qml b/doc/src/snippets/declarative/codingconventions/javascript.qml new file mode 100644 index 0000000..64b5a40 --- /dev/null +++ b/doc/src/snippets/declarative/codingconventions/javascript.qml @@ -0,0 +1,33 @@ +import Qt 4.7 + +Rectangle { + +//![0] +Rectangle { color: "blue"; width: parent.width / 3 } +//![0] + +//![1] +Rectangle { + color: "blue" + width: { + var w = parent.width / 3 + console.debug(w) + return w + } +} +//![1] + +//![2] +function calculateWidth(object) +{ + var w = object.width / 3 + // ... + // more javascript code + // ... + console.debug(w) + return w +} + +Rectangle { color: "blue"; width: calculateWidth(parent) } +//![2] +} diff --git a/doc/src/snippets/declarative/codingconventions/lists.qml b/doc/src/snippets/declarative/codingconventions/lists.qml new file mode 100644 index 0000000..63e8100 --- /dev/null +++ b/doc/src/snippets/declarative/codingconventions/lists.qml @@ -0,0 +1,22 @@ +import Qt 4.7 + +Item { + Item { +//! [0] +states: [ + State { + name: "open" + PropertyChanges { target: container; width: 200 } + } +] +//! [0] + } + Item { +//! [1] +states: State { + name: "open" + PropertyChanges { target: container; width: 200 } +} +//! [1] + } +} diff --git a/doc/src/snippets/declarative/codingconventions/myscript.js b/doc/src/snippets/declarative/codingconventions/myscript.js new file mode 100644 index 0000000..cfa6462 --- /dev/null +++ b/doc/src/snippets/declarative/codingconventions/myscript.js @@ -0,0 +1,9 @@ +function calculateWidth(parent) +{ + var w = parent.width / 3 + // ... + // more javascript code + // ... + console.debug(w) + return w +} diff --git a/doc/src/snippets/declarative/codingconventions/photo.qml b/doc/src/snippets/declarative/codingconventions/photo.qml new file mode 100644 index 0000000..c28c2c9 --- /dev/null +++ b/doc/src/snippets/declarative/codingconventions/photo.qml @@ -0,0 +1,37 @@ +import Qt 4.7 + +//! [0] +Rectangle { + id: photo // id on the first line makes it easy to find an object + + property bool thumbnail: false // property declarations + property alias image: photoImage.source + + signal clicked // signal declarations + + function doSomething(x) { // javascript functions + return x + photoImage.width + } + + x: 20; y: 20; width: 200; height: 150 // object properties + color: "gray" // try to group related properties together + + Rectangle { // child objects + id: border + anchors.centerIn: parent; color: "white" + + Image { id: photoImage; anchors.centerIn: parent } + } + + states: State { // states + name: "selected" + PropertyChanges { target: border; color: "red" } + } + + transitions: Transition { // transitions + from: ""; to: "selected" + ColorAnimation { target: border; duration: 200 } + } +} +//! [0] + diff --git a/doc/src/snippets/declarative/comments.qml b/doc/src/snippets/declarative/comments.qml index 806be29..ab1bbc9 100644 --- a/doc/src/snippets/declarative/comments.qml +++ b/doc/src/snippets/declarative/comments.qml @@ -1,4 +1,4 @@ -import Qt 4.6 +import Qt 4.7 Text { text: "Hello world!" //a basic greeting diff --git a/doc/src/snippets/declarative/content.qml b/doc/src/snippets/declarative/content.qml deleted file mode 100644 index fb03ced..0000000 --- a/doc/src/snippets/declarative/content.qml +++ /dev/null @@ -1,9 +0,0 @@ -import Qt 4.6 - -Rectangle { - width: 200; height: 100; color: "lightgray" - GroupBox { - Text { text: "First Item" } - Text { text: "Second Item" } - } -} diff --git a/doc/src/snippets/declarative/drag.qml b/doc/src/snippets/declarative/drag.qml index 8e5b599..9465efb 100644 --- a/doc/src/snippets/declarative/drag.qml +++ b/doc/src/snippets/declarative/drag.qml @@ -1,4 +1,4 @@ -import Qt 4.6 +import Qt 4.7 //! [0] Rectangle { diff --git a/doc/src/snippets/declarative/flipable.qml b/doc/src/snippets/declarative/flipable.qml new file mode 100644 index 0000000..ae74345 --- /dev/null +++ b/doc/src/snippets/declarative/flipable.qml @@ -0,0 +1,37 @@ +//! [0] +import Qt 4.7 + +Flipable { + id: flipable + width: 240 + height: 240 + + property int angle: 0 + property bool flipped: false + + front: Image { source: "front.png" } + back: Image { source: "back.png" } + + transform: Rotation { + origin.x: flipable.width/2; origin.y: flipable.height/2 + axis.x: 0; axis.y: 1; axis.z: 0 // rotate around y-axis + angle: flipable.angle + } + + states: State { + name: "back" + PropertyChanges { target: flipable; angle: 180 } + when: flipable.flipped + } + + transitions: Transition { + NumberAnimation { properties: "angle"; duration: 1000 } + } + + MouseArea { + anchors.fill: parent + onClicked: flipable.flipped = !flipable.flipped + } +} +//! [0] + diff --git a/doc/src/snippets/declarative/gradient.qml b/doc/src/snippets/declarative/gradient.qml index 281360e..168398d 100644 --- a/doc/src/snippets/declarative/gradient.qml +++ b/doc/src/snippets/declarative/gradient.qml @@ -1,4 +1,4 @@ -import Qt 4.6 +import Qt 4.7 Rectangle { width: 100; height: 100 diff --git a/doc/src/snippets/declarative/gridview/dummydata/ContactModel.qml b/doc/src/snippets/declarative/gridview/dummydata/ContactModel.qml index 3cf9ba7..90f139d 100644 --- a/doc/src/snippets/declarative/gridview/dummydata/ContactModel.qml +++ b/doc/src/snippets/declarative/gridview/dummydata/ContactModel.qml @@ -1,4 +1,4 @@ -import Qt 4.6 +import Qt 4.7 ListModel { id: contactModel diff --git a/doc/src/snippets/declarative/gridview/gridview.qml b/doc/src/snippets/declarative/gridview/gridview.qml index 1a2021c..1d3df97 100644 --- a/doc/src/snippets/declarative/gridview/gridview.qml +++ b/doc/src/snippets/declarative/gridview/gridview.qml @@ -1,4 +1,4 @@ -import Qt 4.6 +import Qt 4.7 //! [3] Rectangle { diff --git a/doc/src/snippets/declarative/listview/dummydata/ContactModel.qml b/doc/src/snippets/declarative/listview/dummydata/ContactModel.qml index 6832308..20687cf 100644 --- a/doc/src/snippets/declarative/listview/dummydata/ContactModel.qml +++ b/doc/src/snippets/declarative/listview/dummydata/ContactModel.qml @@ -1,4 +1,4 @@ -import Qt 4.6 +import Qt 4.7 ListModel { id: contactModel diff --git a/doc/src/snippets/declarative/listview/highlight.qml b/doc/src/snippets/declarative/listview/highlight.qml index b016f9a..794b3f2 100644 --- a/doc/src/snippets/declarative/listview/highlight.qml +++ b/doc/src/snippets/declarative/listview/highlight.qml @@ -1,4 +1,4 @@ -import Qt 4.6 +import Qt 4.7 Rectangle { width: 180; height: 200; color: "white" @@ -30,7 +30,7 @@ Rectangle { } ] transitions: [ - Transition { NumberAnimation { matchProperties: "x"; duration: 200 } } + Transition { NumberAnimation { properties: "x"; duration: 200 } } ] } } @@ -44,8 +44,8 @@ Rectangle { Rectangle { width: 180; height: 40 color: "lightsteelblue"; radius: 5 - y: SpringFollow { - source: list.currentItem.y + SpringFollow on y { + to: list.currentItem.y spring: 3 damping: 0.2 } diff --git a/doc/src/snippets/declarative/listview/listview.qml b/doc/src/snippets/declarative/listview/listview.qml index be0f3ad..61bf126 100644 --- a/doc/src/snippets/declarative/listview/listview.qml +++ b/doc/src/snippets/declarative/listview/listview.qml @@ -1,4 +1,4 @@ -import Qt 4.6 +import Qt 4.7 //! [3] Rectangle { diff --git a/doc/src/snippets/declarative/mouseregion.qml b/doc/src/snippets/declarative/mouseregion.qml index 79f8f8f..a464069 100644 --- a/doc/src/snippets/declarative/mouseregion.qml +++ b/doc/src/snippets/declarative/mouseregion.qml @@ -1,7 +1,7 @@ -import Qt 4.6 +import Qt 4.7 Rectangle { width: 200; height: 100 -HorizontalLayout { +Row { //! [0] Rectangle { width: 100; height: 100; color: "green" MouseArea { anchors.fill: parent; onClicked: { parent.color = 'red' } } diff --git a/doc/src/snippets/declarative/pathview/dummydata/MenuModel.qml b/doc/src/snippets/declarative/pathview/dummydata/MenuModel.qml index 1334cf4..4004076 100644 --- a/doc/src/snippets/declarative/pathview/dummydata/MenuModel.qml +++ b/doc/src/snippets/declarative/pathview/dummydata/MenuModel.qml @@ -1,4 +1,4 @@ -import Qt 4.6 +import Qt 4.7 ListModel { id: menuModel diff --git a/doc/src/snippets/declarative/pathview/pathattributes.qml b/doc/src/snippets/declarative/pathview/pathattributes.qml index 19a192c..ba860c2 100644 --- a/doc/src/snippets/declarative/pathview/pathattributes.qml +++ b/doc/src/snippets/declarative/pathview/pathattributes.qml @@ -1,4 +1,4 @@ -import Qt 4.6 +import Qt 4.7 Rectangle { width: 240; height: 200; color: 'white' @@ -13,7 +13,7 @@ Rectangle { opacity: PathView.opacity Column { Image { anchors.horizontalCenter: name.horizontalCenter; width: 64; height: 64; source: icon } - Text { id: name; text: name; font.pointSize: 16} + Text { text: name; font.pointSize: 16} } } } diff --git a/doc/src/snippets/declarative/pathview/pathview.qml b/doc/src/snippets/declarative/pathview/pathview.qml index 5605139..3686398 100644 --- a/doc/src/snippets/declarative/pathview/pathview.qml +++ b/doc/src/snippets/declarative/pathview/pathview.qml @@ -1,4 +1,4 @@ -import Qt 4.6 +import Qt 4.7 Rectangle { width: 240; height: 200; color: 'white' @@ -11,7 +11,7 @@ Rectangle { width: 80; height: 80 Column { Image { anchors.horizontalCenter: name.horizontalCenter; width: 64; height: 64; source: icon } - Text { id: name; text: name; font.pointSize: 16} + Text { text: name; font.pointSize: 16} } } } diff --git a/doc/src/snippets/declarative/repeater-index.qml b/doc/src/snippets/declarative/repeater-index.qml index 9063967..709eaf2 100644 --- a/doc/src/snippets/declarative/repeater-index.qml +++ b/doc/src/snippets/declarative/repeater-index.qml @@ -1,4 +1,4 @@ -import Qt 4.6 +import Qt 4.7 Rectangle { width: 50; height: childrenRect.height; color: "white" diff --git a/doc/src/snippets/declarative/repeater.qml b/doc/src/snippets/declarative/repeater.qml index f8ac856..02a8208 100644 --- a/doc/src/snippets/declarative/repeater.qml +++ b/doc/src/snippets/declarative/repeater.qml @@ -1,4 +1,4 @@ -import Qt 4.6 +import Qt 4.7 Rectangle { width: 220; height: 20; color: "white" diff --git a/doc/src/snippets/declarative/rotation.qml b/doc/src/snippets/declarative/rotation.qml index 4a67dcb..f2fd78c 100644 --- a/doc/src/snippets/declarative/rotation.qml +++ b/doc/src/snippets/declarative/rotation.qml @@ -1,4 +1,4 @@ -import Qt 4.6 +import Qt 4.7 Rectangle { width: 360; height: 80 diff --git a/doc/src/snippets/declarative/workerscript.qml b/doc/src/snippets/declarative/workerscript.qml new file mode 100644 index 0000000..838e7e5 --- /dev/null +++ b/doc/src/snippets/declarative/workerscript.qml @@ -0,0 +1,24 @@ +//![0] +import Qt 4.7 + +Rectangle { + width: 300; height: 300 + + Text { + id: myText + text: 'Click anywhere' + } + + WorkerScript { + id: myWorker + source: "script.js" + + onMessage: myText.text = messageObject.reply + } + + MouseArea { + anchors.fill: parent + onClicked: myWorker.sendMessage({ 'x': mouse.x, 'y': mouse.y }) + } +} +//![0] diff --git a/doc/src/snippets/qelapsedtimer/main.cpp b/doc/src/snippets/qelapsedtimer/main.cpp new file mode 100644 index 0000000..9d0421f --- /dev/null +++ b/doc/src/snippets/qelapsedtimer/main.cpp @@ -0,0 +1,112 @@ +/**************************************************************************** +** +** 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 QtNetwork module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +#include <QtCore> + +void slowOperation1() +{ + static char buf[256]; + for (int i = 0; i < (1<<20); ++i) + buf[i % sizeof buf] = i; +} + +void slowOperation2(int) { slowOperation1(); } + +void startExample() +{ +//![0] + QElapsedTimer timer; + timer.start(); + + slowOperation1(); + + qDebug() << "The slow operation took" << timer.elapsed() << "milliseconds"; +//![0] +} + +//![1] +void executeSlowOperations(int timeout) +{ + QElapsedTimer timer; + timer.start(); + slowOperation1(); + + int remainingTime = timeout - timer.elapsed(); + if (remainingTime > 0) + slowOperation2(remainingTime); +} +//![1] + +//![2] +void executeOperationsForTime(int ms) +{ + QElapsedTimer timer; + timer.start(); + + while (!timer.hasExpired(ms)) + slowOperation1(); +} +//![2] + +int restartExample() +{ +//![3] + QElapsedTimer timer; + + int count = 1; + timer.start(); + do { + count *= 2; + slowOperation2(count); + } while (timer.restart() < 250); + + return count; +//![3] +} + +int main(int argc, char **argv) +{ + QCoreApplication app(argc, argv); + + startExample(); + restartExample(); + executeSlowOperations(5); + executeOperationsForTime(5); +} diff --git a/doc/src/snippets/qelapsedtimer/qelapsedtimer.pro b/doc/src/snippets/qelapsedtimer/qelapsedtimer.pro new file mode 100644 index 0000000..b0a8f66 --- /dev/null +++ b/doc/src/snippets/qelapsedtimer/qelapsedtimer.pro @@ -0,0 +1,2 @@ +SOURCES = main.cpp +QT -= gui |