diff options
Diffstat (limited to 'doc')
-rw-r--r-- | doc/src/snippets/code/src_corelib_thread_qthread.cpp | 80 |
1 files changed, 54 insertions, 26 deletions
diff --git a/doc/src/snippets/code/src_corelib_thread_qthread.cpp b/doc/src/snippets/code/src_corelib_thread_qthread.cpp index 35f1e34..408f90f 100644 --- a/doc/src/snippets/code/src_corelib_thread_qthread.cpp +++ b/doc/src/snippets/code/src_corelib_thread_qthread.cpp @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Copyright (C) 2013 Olivier Goffart <ogoffart@woboq.com> ** Contact: http://www.qt-project.org/legal ** ** This file is part of the documentation of the Qt Toolkit. @@ -38,41 +38,69 @@ ** ****************************************************************************/ -//! [0] -class Worker : public QObject +#include <QtCore/QThread> +class MyObject; + +//! [reimpl-run] +class WorkerThread : public QThread { Q_OBJECT - -public slots: - void doWork() { - ... + void run() { + QString result; + /* expensive or blocking operation */ + emit resultReady(result); } +signals: + void resultReady(const QString &s); }; -void MyObject::putWorkerInAThread() +void MyObject::startWorkInAThread() { - Worker *worker = new Worker; - QThread *workerThread = new QThread(this); - - connect(workerThread, SIGNAL(started()), worker, SLOT(doWork())); - connect(workerThread, SIGNAL(finished()), worker, SLOT(deleteLater())); - worker->moveToThread(workerThread); - - // Starts an event loop, and emits workerThread->started() + WorkerThread *workerThread = new WorkerThread(this); + connect(workerThread, SIGNAL(resultReady(QString)), this, SLOT(handleResults(QString))); + connect(workerThread, SIGNAL(finished()), workerThread, SLOT(deleteLater())); workerThread->start(); } -//! [0] +//! [reimpl-run] + -//! [1] -class AdvancedThreadManager : public QThread +//! [worker] +class Worker : public QObject { -protected: - void run() - { - /* ... other code to initialize thread... */ + Q_OBJECT + QThread workerThread; - // Begin event handling - exec(); +public slots: + void doWork(const QString ¶meter) { + // ... + emit resultReady(result); } + +signals: + void resultReady(const QString &result); }; -//! [1] + +class Controller : public QObject +{ + Q_OBJECT + QThread workerThread; +public: + Controller() { + Worker *worker = new Worker; + worker->moveToThread(&workerThread); + connect(workerThread, SIGNAL(finished()), worker, SLOT(deleteLater())); + connect(this, SIGNAL(operate(QString)), worker, SLOT(doWork(QString))); + connect(worker, SIGNAL(resultReady(QString)), this, SLOT(handleResults(QString))); + workerThread.start(); + } + ~Controller() { + workerThread.quit(); + workerThread.wait(); + } +public slots: + void handleResults(const QString &); +signals: + void operate(const QString &); +}; +//! [worker] + |