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-rw-r--r--src/corelib/doc/snippets/code/src_corelib_thread_qthread.cpp79
1 files changed, 53 insertions, 26 deletions
diff --git a/src/corelib/doc/snippets/code/src_corelib_thread_qthread.cpp b/src/corelib/doc/snippets/code/src_corelib_thread_qthread.cpp
index f0bc759320..c33c8bb48a 100644
--- a/src/corelib/doc/snippets/code/src_corelib_thread_qthread.cpp
+++ b/src/corelib/doc/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 +38,68 @@
**
****************************************************************************/
-//! [0]
-class Worker : public QObject
+#include <QtCore/QThread>
+class MyObject;
+
+//! [reimpl-run]
+class WorkerThread : public QThread
{
Q_OBJECT
-
-public slots:
- void doWork() {
- ...
+ void run() Q_DECL_OVERRIDE {
+ 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, &QThread::started, worker, &Worker::doWork);
- connect(workerThread, &QThread::finished, worker, &Worker::deleteLater);
- worker->moveToThread(workerThread);
-
- // Starts an event loop, and emits workerThread->started()
+ WorkerThread *workerThread = new WorkerThread(this);
+ connect(workerThread, &WorkerThread::resultReady, this, &MyObject::handleResults);
+ connect(workerThread, &WorkerThread::finished, workerThread, &QObject::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 &parameter) {
+ // ...
+ emit resultReady(result);
}
+
+signals:
+ void resultReady(const QString &result);
+};
+
+class Controller : public QObject
+{
+ Q_OBJECT
+ QThread workerThread;
+public:
+ Controller() {
+ Worker *worker = new Worker;
+ worker->moveToThread(&workerThread);
+ connect(workerThread, &QThread::finished, worker, &QObject::deleteLater);
+ connect(this, &Controller::operate, worker, &Worker::doWork);
+ connect(worker, &Worker::resultReady, this, &Controller::handleResults);
+ workerThread.start();
+ }
+ ~Controller() {
+ workerThread.quit();
+ workerThread.wait();
+ }
+public slots:
+ void handleResults(const QString &);
+signals:
+ void operate(const QString &);
};
-//! [1]
+//! [worker]