1 files changed, 109 insertions, 0 deletions
diff --git a/examples/threads/queuedcustomtype/renderthread.cpp b/examples/threads/queuedcustomtype/renderthread.cpp
new file mode 100644
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+++ b/examples/threads/queuedcustomtype/renderthread.cpp
@@ -0,0 +1,109 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples 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 "renderthread.h"
+
+RenderThread::RenderThread(QObject *parent)
+    : QThread(parent)
+{
+    m_abort = false;
+}
+
+RenderThread::~RenderThread()
+{
+    mutex.lock();
+    m_abort = true;
+    mutex.unlock();
+
+    wait();
+}
+
+//![processing the image (start)]
+void RenderThread::processImage(const QImage &image)
+{
+    if (image.isNull())
+        return;
+
+    m_image = image;
+    m_abort = false;
+    start();
+}
+
+void RenderThread::run()
+{
+    int size = qMax(m_image.width()/20, m_image.height()/20);
+    for (int s = size; s > 0; --s) {
+        for (int c = 0; c < 400; ++c) {
+//![processing the image (start)]
+            int x1 = qMax(0, (qrand() % m_image.width()) - s/2);
+            int x2 = qMin(x1 + s/2 + 1, m_image.width());
+            int y1 = qMax(0, (qrand() % m_image.height()) - s/2);
+            int y2 = qMin(y1 + s/2 + 1, m_image.height());
+            int n = 0;
+            int red = 0;
+            int green = 0;
+            int blue = 0;
+            for (int i = y1; i < y2; ++i) {
+                for (int j = x1; j < x2; ++j) {
+                    QRgb pixel = m_image.pixel(j, i);
+                    red += qRed(pixel);
+                    green += qGreen(pixel);
+                    blue += qBlue(pixel);
+                    n += 1;
+                }
+            }
+//![processing the image (finish)]
+            Block block(QRect(x1, y1, x2 - x1 + 1, y2 - y1 + 1),
+                        QColor(red/n, green/n, blue/n));
+            emit sendBlock(block);
+            if (m_abort)
+                return;
+            msleep(10);
+        }
+    }
+}
+//![processing the image (finish)]
+
+void RenderThread::stopProcess()
+{
+    mutex.lock();
+    m_abort = true;
+    mutex.unlock();
+}