summaryrefslogtreecommitdiffstats
path: root/examples/corelib/threads/queuedcustomtype/renderthread.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'examples/corelib/threads/queuedcustomtype/renderthread.cpp')
-rw-r--r--examples/corelib/threads/queuedcustomtype/renderthread.cpp82
1 files changed, 12 insertions, 70 deletions
diff --git a/examples/corelib/threads/queuedcustomtype/renderthread.cpp b/examples/corelib/threads/queuedcustomtype/renderthread.cpp
index 67cedf1e74..34a439f3fe 100644
--- a/examples/corelib/threads/queuedcustomtype/renderthread.cpp
+++ b/examples/corelib/threads/queuedcustomtype/renderthread.cpp
@@ -1,69 +1,19 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the examples of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** BSD License Usage
-** Alternatively, 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 The Qt Company Ltd 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."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+#include "block.h"
#include "renderthread.h"
#include <QRandomGenerator>
+#include <QRgb>
RenderThread::RenderThread(QObject *parent)
: QThread(parent)
{
- m_abort = false;
}
RenderThread::~RenderThread()
{
- mutex.lock();
- m_abort = true;
- mutex.unlock();
-
wait();
}
@@ -74,27 +24,26 @@ void RenderThread::processImage(const QImage &image)
return;
m_image = image;
- m_abort = false;
start();
}
void RenderThread::run()
{
- int size = qMax(m_image.width()/20, m_image.height()/20);
+ const 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, QRandomGenerator::global()->bounded(m_image.width()) - s/2);
- int x2 = qMin(x1 + s/2 + 1, m_image.width());
- int y1 = qMax(0, QRandomGenerator::global()->bounded(m_image.height()) - s/2);
- int y2 = qMin(y1 + s/2 + 1, m_image.height());
+ const int x1 = qMax(0, QRandomGenerator::global()->bounded(m_image.width()) - s/2);
+ const int x2 = qMin(x1 + s/2 + 1, m_image.width());
+ const int y1 = qMax(0, QRandomGenerator::global()->bounded(m_image.height()) - s/2);
+ const 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);
+ const QRgb pixel = m_image.pixel(j, i);
red += qRed(pixel);
green += qGreen(pixel);
blue += qBlue(pixel);
@@ -102,20 +51,13 @@ void RenderThread::run()
}
}
//![processing the image (finish)]
- Block block(QRect(x1, y1, x2 - x1 + 1, y2 - y1 + 1),
+ const Block block(QRect(x1, y1, x2 - x1 + 1, y2 - y1 + 1),
QColor(red/n, green/n, blue/n));
emit sendBlock(block);
- if (m_abort)
+ if (isInterruptionRequested())
return;
msleep(10);
}
}
}
//![processing the image (finish)]
-
-void RenderThread::stopProcess()
-{
- mutex.lock();
- m_abort = true;
- mutex.unlock();
-}