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authorLars Knoll <lars.knoll@nokia.com>2009-03-23 09:18:55 (GMT)
committerSimon Hausmann <simon.hausmann@nokia.com>2009-03-23 09:18:55 (GMT)
commite5fcad302d86d316390c6b0f62759a067313e8a9 (patch)
treec2afbf6f1066b6ce261f14341cf6d310e5595bc1 /examples/threads
downloadQt-e5fcad302d86d316390c6b0f62759a067313e8a9.zip
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Long live Qt 4.5!
Diffstat (limited to 'examples/threads')
-rw-r--r--examples/threads/README40
-rw-r--r--examples/threads/mandelbrot/main.cpp54
-rw-r--r--examples/threads/mandelbrot/mandelbrot.pro13
-rw-r--r--examples/threads/mandelbrot/mandelbrotwidget.cpp240
-rw-r--r--examples/threads/mandelbrot/mandelbrotwidget.h85
-rw-r--r--examples/threads/mandelbrot/renderthread.cpp216
-rw-r--r--examples/threads/mandelbrot/renderthread.h89
-rw-r--r--examples/threads/queuedcustomtype/block.cpp74
-rw-r--r--examples/threads/queuedcustomtype/block.h71
-rw-r--r--examples/threads/queuedcustomtype/main.cpp129
-rw-r--r--examples/threads/queuedcustomtype/queuedcustomtype.pro7
-rw-r--r--examples/threads/queuedcustomtype/renderthread.cpp110
-rw-r--r--examples/threads/queuedcustomtype/renderthread.h77
-rw-r--r--examples/threads/queuedcustomtype/window.cpp137
-rw-r--r--examples/threads/queuedcustomtype/window.h77
-rw-r--r--examples/threads/semaphores/semaphores.cpp107
-rw-r--r--examples/threads/semaphores/semaphores.pro10
-rw-r--r--examples/threads/threads.pro10
-rw-r--r--examples/threads/waitconditions/waitconditions.cpp126
-rw-r--r--examples/threads/waitconditions/waitconditions.pro20
20 files changed, 1692 insertions, 0 deletions
diff --git a/examples/threads/README b/examples/threads/README
new file mode 100644
index 0000000..e4b426f
--- /dev/null
+++ b/examples/threads/README
@@ -0,0 +1,40 @@
+Qt 4 makes it easier than ever to write multithreaded applications. More
+classes have been made usable from non-GUI threads, and the signals and slots
+mechanism can now be used to communicate between threads.
+
+Additionally, it is now possible to move objects between threads.
+
+
+The example launcher provided with Qt can be used to explore each of the
+examples in this directory.
+
+Documentation for these examples can be found via the Tutorial and Examples
+link in the main Qt documentation.
+
+
+Finding the Qt Examples and Demos launcher
+==========================================
+
+On Windows:
+
+The launcher can be accessed via the Windows Start menu. Select the menu
+entry entitled "Qt Examples and Demos" entry in the submenu containing
+the Qt tools.
+
+On Mac OS X:
+
+For the binary distribution, the qtdemo executable is installed in the
+/Developer/Applications/Qt directory. For the source distribution, it is
+installed alongside the other Qt tools on the path specified when Qt is
+configured.
+
+On Unix/Linux:
+
+The qtdemo executable is installed alongside the other Qt tools on the path
+specified when Qt is configured.
+
+On all platforms:
+
+The source code for the launcher can be found in the demos/qtdemo directory
+in the Qt package. This example is built at the same time as the Qt libraries,
+tools, examples, and demonstrations.
diff --git a/examples/threads/mandelbrot/main.cpp b/examples/threads/mandelbrot/main.cpp
new file mode 100644
index 0000000..2395ff6
--- /dev/null
+++ b/examples/threads/mandelbrot/main.cpp
@@ -0,0 +1,54 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QApplication>
+
+#include "mandelbrotwidget.h"
+
+//! [0]
+int main(int argc, char *argv[])
+{
+ QApplication app(argc, argv);
+ MandelbrotWidget widget;
+ widget.show();
+ return app.exec();
+}
+//! [0]
diff --git a/examples/threads/mandelbrot/mandelbrot.pro b/examples/threads/mandelbrot/mandelbrot.pro
new file mode 100644
index 0000000..437f449
--- /dev/null
+++ b/examples/threads/mandelbrot/mandelbrot.pro
@@ -0,0 +1,13 @@
+HEADERS = mandelbrotwidget.h \
+ renderthread.h
+SOURCES = main.cpp \
+ mandelbrotwidget.cpp \
+ renderthread.cpp
+
+unix:!mac:LIBS += -lm
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/threads/mandelbrot
+sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS mandelbrot.pro
+sources.path = $$[QT_INSTALL_EXAMPLES]/threads/mandelbrot
+INSTALLS += target sources
diff --git a/examples/threads/mandelbrot/mandelbrotwidget.cpp b/examples/threads/mandelbrot/mandelbrotwidget.cpp
new file mode 100644
index 0000000..74b27d8
--- /dev/null
+++ b/examples/threads/mandelbrot/mandelbrotwidget.cpp
@@ -0,0 +1,240 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include <math.h>
+
+#include "mandelbrotwidget.h"
+
+//! [0]
+const double DefaultCenterX = -0.637011f;
+const double DefaultCenterY = -0.0395159f;
+const double DefaultScale = 0.00403897f;
+
+const double ZoomInFactor = 0.8f;
+const double ZoomOutFactor = 1 / ZoomInFactor;
+const int ScrollStep = 20;
+//! [0]
+
+//! [1]
+MandelbrotWidget::MandelbrotWidget(QWidget *parent)
+ : QWidget(parent)
+{
+ centerX = DefaultCenterX;
+ centerY = DefaultCenterY;
+ pixmapScale = DefaultScale;
+ curScale = DefaultScale;
+
+ qRegisterMetaType<QImage>("QImage");
+ connect(&thread, SIGNAL(renderedImage(const QImage &, double)),
+ this, SLOT(updatePixmap(const QImage &, double)));
+
+ setWindowTitle(tr("Mandelbrot"));
+#ifndef QT_NO_CURSOR
+ setCursor(Qt::CrossCursor);
+#endif
+ resize(550, 400);
+}
+//! [1]
+
+//! [2]
+void MandelbrotWidget::paintEvent(QPaintEvent * /* event */)
+{
+ QPainter painter(this);
+ painter.fillRect(rect(), Qt::black);
+
+ if (pixmap.isNull()) {
+ painter.setPen(Qt::white);
+ painter.drawText(rect(), Qt::AlignCenter,
+ tr("Rendering initial image, please wait..."));
+//! [2] //! [3]
+ return;
+//! [3] //! [4]
+ }
+//! [4]
+
+//! [5]
+ if (curScale == pixmapScale) {
+//! [5] //! [6]
+ painter.drawPixmap(pixmapOffset, pixmap);
+//! [6] //! [7]
+ } else {
+//! [7] //! [8]
+ double scaleFactor = pixmapScale / curScale;
+ int newWidth = int(pixmap.width() * scaleFactor);
+ int newHeight = int(pixmap.height() * scaleFactor);
+ int newX = pixmapOffset.x() + (pixmap.width() - newWidth) / 2;
+ int newY = pixmapOffset.y() + (pixmap.height() - newHeight) / 2;
+
+ painter.save();
+ painter.translate(newX, newY);
+ painter.scale(scaleFactor, scaleFactor);
+ QRectF exposed = painter.matrix().inverted().mapRect(rect()).adjusted(-1, -1, 1, 1);
+ painter.drawPixmap(exposed, pixmap, exposed);
+ painter.restore();
+ }
+//! [8] //! [9]
+
+ QString text = tr("Use mouse wheel or the '+' and '-' keys to zoom. "
+ "Press and hold left mouse button to scroll.");
+ QFontMetrics metrics = painter.fontMetrics();
+ int textWidth = metrics.width(text);
+
+ painter.setPen(Qt::NoPen);
+ painter.setBrush(QColor(0, 0, 0, 127));
+ painter.drawRect((width() - textWidth) / 2 - 5, 0, textWidth + 10,
+ metrics.lineSpacing() + 5);
+ painter.setPen(Qt::white);
+ painter.drawText((width() - textWidth) / 2,
+ metrics.leading() + metrics.ascent(), text);
+}
+//! [9]
+
+//! [10]
+void MandelbrotWidget::resizeEvent(QResizeEvent * /* event */)
+{
+ thread.render(centerX, centerY, curScale, size());
+}
+//! [10]
+
+//! [11]
+void MandelbrotWidget::keyPressEvent(QKeyEvent *event)
+{
+ switch (event->key()) {
+ case Qt::Key_Plus:
+ zoom(ZoomInFactor);
+ break;
+ case Qt::Key_Minus:
+ zoom(ZoomOutFactor);
+ break;
+ case Qt::Key_Left:
+ scroll(-ScrollStep, 0);
+ break;
+ case Qt::Key_Right:
+ scroll(+ScrollStep, 0);
+ break;
+ case Qt::Key_Down:
+ scroll(0, -ScrollStep);
+ break;
+ case Qt::Key_Up:
+ scroll(0, +ScrollStep);
+ break;
+ default:
+ QWidget::keyPressEvent(event);
+ }
+}
+//! [11]
+
+//! [12]
+void MandelbrotWidget::wheelEvent(QWheelEvent *event)
+{
+ int numDegrees = event->delta() / 8;
+ double numSteps = numDegrees / 15.0f;
+ zoom(pow(ZoomInFactor, numSteps));
+}
+//! [12]
+
+//! [13]
+void MandelbrotWidget::mousePressEvent(QMouseEvent *event)
+{
+ if (event->button() == Qt::LeftButton)
+ lastDragPos = event->pos();
+}
+//! [13]
+
+//! [14]
+void MandelbrotWidget::mouseMoveEvent(QMouseEvent *event)
+{
+ if (event->buttons() & Qt::LeftButton) {
+ pixmapOffset += event->pos() - lastDragPos;
+ lastDragPos = event->pos();
+ update();
+ }
+}
+//! [14]
+
+//! [15]
+void MandelbrotWidget::mouseReleaseEvent(QMouseEvent *event)
+{
+ if (event->button() == Qt::LeftButton) {
+ pixmapOffset += event->pos() - lastDragPos;
+ lastDragPos = QPoint();
+
+ int deltaX = (width() - pixmap.width()) / 2 - pixmapOffset.x();
+ int deltaY = (height() - pixmap.height()) / 2 - pixmapOffset.y();
+ scroll(deltaX, deltaY);
+ }
+}
+//! [15]
+
+//! [16]
+void MandelbrotWidget::updatePixmap(const QImage &image, double scaleFactor)
+{
+ if (!lastDragPos.isNull())
+ return;
+
+ pixmap = QPixmap::fromImage(image);
+ pixmapOffset = QPoint();
+ lastDragPos = QPoint();
+ pixmapScale = scaleFactor;
+ update();
+}
+//! [16]
+
+//! [17]
+void MandelbrotWidget::zoom(double zoomFactor)
+{
+ curScale *= zoomFactor;
+ update();
+ thread.render(centerX, centerY, curScale, size());
+}
+//! [17]
+
+//! [18]
+void MandelbrotWidget::scroll(int deltaX, int deltaY)
+{
+ centerX += deltaX * curScale;
+ centerY += deltaY * curScale;
+ update();
+ thread.render(centerX, centerY, curScale, size());
+}
+//! [18]
diff --git a/examples/threads/mandelbrot/mandelbrotwidget.h b/examples/threads/mandelbrot/mandelbrotwidget.h
new file mode 100644
index 0000000..3e8084c
--- /dev/null
+++ b/examples/threads/mandelbrot/mandelbrotwidget.h
@@ -0,0 +1,85 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef MANDELBROTWIDGET_H
+#define MANDELBROTWIDGET_H
+
+#include <QPixmap>
+#include <QWidget>
+
+#include "renderthread.h"
+
+//! [0]
+class MandelbrotWidget : public QWidget
+{
+ Q_OBJECT
+
+public:
+ MandelbrotWidget(QWidget *parent = 0);
+
+protected:
+ void paintEvent(QPaintEvent *event);
+ void resizeEvent(QResizeEvent *event);
+ void keyPressEvent(QKeyEvent *event);
+ void wheelEvent(QWheelEvent *event);
+ void mousePressEvent(QMouseEvent *event);
+ void mouseMoveEvent(QMouseEvent *event);
+ void mouseReleaseEvent(QMouseEvent *event);
+
+private slots:
+ void updatePixmap(const QImage &image, double scaleFactor);
+
+private:
+ void zoom(double zoomFactor);
+ void scroll(int deltaX, int deltaY);
+
+ RenderThread thread;
+ QPixmap pixmap;
+ QPoint pixmapOffset;
+ QPoint lastDragPos;
+ double centerX;
+ double centerY;
+ double pixmapScale;
+ double curScale;
+};
+//! [0]
+
+#endif
diff --git a/examples/threads/mandelbrot/renderthread.cpp b/examples/threads/mandelbrot/renderthread.cpp
new file mode 100644
index 0000000..5879035
--- /dev/null
+++ b/examples/threads/mandelbrot/renderthread.cpp
@@ -0,0 +1,216 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include <math.h>
+
+#include "renderthread.h"
+
+//! [0]
+RenderThread::RenderThread(QObject *parent)
+ : QThread(parent)
+{
+ restart = false;
+ abort = false;
+
+ for (int i = 0; i < ColormapSize; ++i)
+ colormap[i] = rgbFromWaveLength(380.0 + (i * 400.0 / ColormapSize));
+}
+//! [0]
+
+//! [1]
+RenderThread::~RenderThread()
+{
+ mutex.lock();
+ abort = true;
+ condition.wakeOne();
+ mutex.unlock();
+
+ wait();
+}
+//! [1]
+
+//! [2]
+void RenderThread::render(double centerX, double centerY, double scaleFactor,
+ QSize resultSize)
+{
+ QMutexLocker locker(&mutex);
+
+ this->centerX = centerX;
+ this->centerY = centerY;
+ this->scaleFactor = scaleFactor;
+ this->resultSize = resultSize;
+
+ if (!isRunning()) {
+ start(LowPriority);
+ } else {
+ restart = true;
+ condition.wakeOne();
+ }
+}
+//! [2]
+
+//! [3]
+void RenderThread::run()
+{
+ forever {
+ mutex.lock();
+ QSize resultSize = this->resultSize;
+ double scaleFactor = this->scaleFactor;
+ double centerX = this->centerX;
+ double centerY = this->centerY;
+ mutex.unlock();
+//! [3]
+
+//! [4]
+ int halfWidth = resultSize.width() / 2;
+//! [4] //! [5]
+ int halfHeight = resultSize.height() / 2;
+ QImage image(resultSize, QImage::Format_RGB32);
+
+ const int NumPasses = 8;
+ int pass = 0;
+ while (pass < NumPasses) {
+ const int MaxIterations = (1 << (2 * pass + 6)) + 32;
+ const int Limit = 4;
+ bool allBlack = true;
+
+ for (int y = -halfHeight; y < halfHeight; ++y) {
+ if (restart)
+ break;
+ if (abort)
+ return;
+
+ uint *scanLine =
+ reinterpret_cast<uint *>(image.scanLine(y + halfHeight));
+ double ay = centerY + (y * scaleFactor);
+
+ for (int x = -halfWidth; x < halfWidth; ++x) {
+ double ax = centerX + (x * scaleFactor);
+ double a1 = ax;
+ double b1 = ay;
+ int numIterations = 0;
+
+ do {
+ ++numIterations;
+ double a2 = (a1 * a1) - (b1 * b1) + ax;
+ double b2 = (2 * a1 * b1) + ay;
+ if ((a2 * a2) + (b2 * b2) > Limit)
+ break;
+
+ ++numIterations;
+ a1 = (a2 * a2) - (b2 * b2) + ax;
+ b1 = (2 * a2 * b2) + ay;
+ if ((a1 * a1) + (b1 * b1) > Limit)
+ break;
+ } while (numIterations < MaxIterations);
+
+ if (numIterations < MaxIterations) {
+ *scanLine++ = colormap[numIterations % ColormapSize];
+ allBlack = false;
+ } else {
+ *scanLine++ = qRgb(0, 0, 0);
+ }
+ }
+ }
+
+ if (allBlack && pass == 0) {
+ pass = 4;
+ } else {
+ if (!restart)
+ emit renderedImage(image, scaleFactor);
+//! [5] //! [6]
+ ++pass;
+ }
+//! [6] //! [7]
+ }
+//! [7]
+
+//! [8]
+ mutex.lock();
+//! [8] //! [9]
+ if (!restart)
+ condition.wait(&mutex);
+ restart = false;
+ mutex.unlock();
+ }
+}
+//! [9]
+
+//! [10]
+uint RenderThread::rgbFromWaveLength(double wave)
+{
+ double r = 0.0;
+ double g = 0.0;
+ double b = 0.0;
+
+ if (wave >= 380.0 && wave <= 440.0) {
+ r = -1.0 * (wave - 440.0) / (440.0 - 380.0);
+ b = 1.0;
+ } else if (wave >= 440.0 && wave <= 490.0) {
+ g = (wave - 440.0) / (490.0 - 440.0);
+ b = 1.0;
+ } else if (wave >= 490.0 && wave <= 510.0) {
+ g = 1.0;
+ b = -1.0 * (wave - 510.0) / (510.0 - 490.0);
+ } else if (wave >= 510.0 && wave <= 580.0) {
+ r = (wave - 510.0) / (580.0 - 510.0);
+ g = 1.0;
+ } else if (wave >= 580.0 && wave <= 645.0) {
+ r = 1.0;
+ g = -1.0 * (wave - 645.0) / (645.0 - 580.0);
+ } else if (wave >= 645.0 && wave <= 780.0) {
+ r = 1.0;
+ }
+
+ double s = 1.0;
+ if (wave > 700.0)
+ s = 0.3 + 0.7 * (780.0 - wave) / (780.0 - 700.0);
+ else if (wave < 420.0)
+ s = 0.3 + 0.7 * (wave - 380.0) / (420.0 - 380.0);
+
+ r = pow(r * s, 0.8);
+ g = pow(g * s, 0.8);
+ b = pow(b * s, 0.8);
+ return qRgb(int(r * 255), int(g * 255), int(b * 255));
+}
+//! [10]
diff --git a/examples/threads/mandelbrot/renderthread.h b/examples/threads/mandelbrot/renderthread.h
new file mode 100644
index 0000000..2b03186
--- /dev/null
+++ b/examples/threads/mandelbrot/renderthread.h
@@ -0,0 +1,89 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef RENDERTHREAD_H
+#define RENDERTHREAD_H
+
+#include <QMutex>
+#include <QSize>
+#include <QThread>
+#include <QWaitCondition>
+
+QT_BEGIN_NAMESPACE
+class QImage;
+QT_END_NAMESPACE
+
+//! [0]
+class RenderThread : public QThread
+{
+ Q_OBJECT
+
+public:
+ RenderThread(QObject *parent = 0);
+ ~RenderThread();
+
+ void render(double centerX, double centerY, double scaleFactor,
+ QSize resultSize);
+
+signals:
+ void renderedImage(const QImage &image, double scaleFactor);
+
+protected:
+ void run();
+
+private:
+ uint rgbFromWaveLength(double wave);
+
+ QMutex mutex;
+ QWaitCondition condition;
+ double centerX;
+ double centerY;
+ double scaleFactor;
+ QSize resultSize;
+ bool restart;
+ bool abort;
+
+ enum { ColormapSize = 512 };
+ uint colormap[ColormapSize];
+};
+//! [0]
+
+#endif
diff --git a/examples/threads/queuedcustomtype/block.cpp b/examples/threads/queuedcustomtype/block.cpp
new file mode 100644
index 0000000..1a14f09
--- /dev/null
+++ b/examples/threads/queuedcustomtype/block.cpp
@@ -0,0 +1,74 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QColor>
+#include <QRect>
+#include "block.h"
+
+Block::Block()
+{
+}
+
+Block::Block(const Block &other)
+{
+ m_rect = other.m_rect;
+ m_color = other.m_color;
+}
+
+Block::~Block()
+{
+}
+
+Block::Block(const QRect &rect, const QColor &color)
+{
+ m_rect = rect;
+ m_color = color;
+}
+
+QColor Block::color() const
+{
+ return m_color;
+}
+
+QRect Block::rect() const
+{
+ return m_rect;
+}
diff --git a/examples/threads/queuedcustomtype/block.h b/examples/threads/queuedcustomtype/block.h
new file mode 100644
index 0000000..2a75529
--- /dev/null
+++ b/examples/threads/queuedcustomtype/block.h
@@ -0,0 +1,71 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef BLOCK_H
+#define BLOCK_H
+
+#include <QColor>
+#include <QDebug>
+#include <QMetaType>
+#include <QRect>
+
+//! [custom type definition and meta-type declaration]
+class Block
+{
+public:
+ Block();
+ Block(const Block &other);
+ ~Block();
+
+ Block(const QRect &rect, const QColor &color);
+
+ QColor color() const;
+ QRect rect() const;
+
+private:
+ QRect m_rect;
+ QColor m_color;
+};
+
+Q_DECLARE_METATYPE(Block);
+//! [custom type definition and meta-type declaration]
+
+#endif
diff --git a/examples/threads/queuedcustomtype/main.cpp b/examples/threads/queuedcustomtype/main.cpp
new file mode 100644
index 0000000..93dab49
--- /dev/null
+++ b/examples/threads/queuedcustomtype/main.cpp
@@ -0,0 +1,129 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QApplication>
+#include <QPainter>
+#include <QTime>
+#include "block.h"
+#include "window.h"
+
+QImage createImage(int width, int height)
+{
+ QImage image(width, height, QImage::Format_RGB16);
+ QPainter painter;
+ QPen pen;
+ pen.setStyle(Qt::NoPen);
+ QBrush brush(Qt::blue);
+
+ painter.begin(&image);
+ painter.fillRect(image.rect(), brush);
+ brush.setColor(Qt::white);
+ painter.setPen(pen);
+ painter.setBrush(brush);
+
+ static const QPointF points1[3] = {
+ QPointF(4, 4),
+ QPointF(7, 4),
+ QPointF(5.5, 1)
+ };
+
+ static const QPointF points2[3] = {
+ QPointF(1, 4),
+ QPointF(7, 4),
+ QPointF(10, 10)
+ };
+
+ static const QPointF points3[3] = {
+ QPointF(4, 4),
+ QPointF(10, 4),
+ QPointF(1, 10)
+ };
+
+ painter.setWindow(0, 0, 10, 10);
+
+ int x = 0;
+ int y = 0;
+ int starWidth = image.width()/3;
+ int starHeight = image.height()/3;
+
+ QRect rect(x, y, starWidth, starHeight);
+
+ for (int i = 0; i < 9; ++i) {
+
+ painter.setViewport(rect);
+ painter.drawPolygon(points1, 3);
+ painter.drawPolygon(points2, 3);
+ painter.drawPolygon(points3, 3);
+
+ if (i % 3 == 2) {
+ y = y + starHeight;
+ rect.moveTop(y);
+
+ x = 0;
+ rect.moveLeft(x);
+
+ } else {
+ x = x + starWidth;
+ rect.moveLeft(x);
+ }
+ }
+
+ painter.end();
+ return image;
+}
+
+//! [main function] //! [main start]
+int main(int argc, char *argv[])
+{
+ QApplication app(argc, argv);
+//! [main start] //! [register meta-type for queued communications]
+ qRegisterMetaType<Block>();
+//! [register meta-type for queued communications]
+ qsrand(QTime::currentTime().elapsed());
+
+ Window window;
+ window.show();
+
+ window.loadImage(createImage(256, 256));
+//! [main finish]
+ return app.exec();
+}
+//! [main finish] //! [main function]
diff --git a/examples/threads/queuedcustomtype/queuedcustomtype.pro b/examples/threads/queuedcustomtype/queuedcustomtype.pro
new file mode 100644
index 0000000..6f39121
--- /dev/null
+++ b/examples/threads/queuedcustomtype/queuedcustomtype.pro
@@ -0,0 +1,7 @@
+HEADERS = block.h \
+ renderthread.h \
+ window.h
+SOURCES = main.cpp \
+ block.cpp \
+ renderthread.cpp \
+ window.cpp
diff --git a/examples/threads/queuedcustomtype/renderthread.cpp b/examples/threads/queuedcustomtype/renderthread.cpp
new file mode 100644
index 0000000..052dd39
--- /dev/null
+++ b/examples/threads/queuedcustomtype/renderthread.cpp
@@ -0,0 +1,110 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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();
+}
diff --git a/examples/threads/queuedcustomtype/renderthread.h b/examples/threads/queuedcustomtype/renderthread.h
new file mode 100644
index 0000000..9c7f049
--- /dev/null
+++ b/examples/threads/queuedcustomtype/renderthread.h
@@ -0,0 +1,77 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef RENDERTHREAD_H
+#define RENDERTHREAD_H
+
+#include <QImage>
+#include <QMutex>
+#include <QThread>
+#include "block.h"
+
+//! [RenderThread class definition]
+class RenderThread : public QThread
+{
+ Q_OBJECT
+
+public:
+ RenderThread(QObject *parent = 0);
+ ~RenderThread();
+
+ void processImage(const QImage &image);
+
+signals:
+ void sendBlock(const Block &block);
+
+public slots:
+ void stopProcess();
+
+protected:
+ void run();
+
+private:
+ bool m_abort;
+ QImage m_image;
+ QMutex mutex;
+};
+//! [RenderThread class definition]
+
+#endif
diff --git a/examples/threads/queuedcustomtype/window.cpp b/examples/threads/queuedcustomtype/window.cpp
new file mode 100644
index 0000000..7282e0c
--- /dev/null
+++ b/examples/threads/queuedcustomtype/window.cpp
@@ -0,0 +1,137 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+#include "window.h"
+
+//! [Window constructor start]
+Window::Window()
+{
+ thread = new RenderThread();
+//! [Window constructor start] //! [set up widgets and connections]
+
+ label = new QLabel();
+ label->setAlignment(Qt::AlignCenter);
+
+ loadButton = new QPushButton(tr("&Load image..."));
+ resetButton = new QPushButton(tr("&Stop"));
+ resetButton->setEnabled(false);
+
+ connect(loadButton, SIGNAL(clicked()), this, SLOT(loadImage()));
+ connect(resetButton, SIGNAL(clicked()), thread, SLOT(stopProcess()));
+ connect(thread, SIGNAL(finished()), this, SLOT(resetUi()));
+//! [set up widgets and connections] //! [connecting signal with custom type]
+ connect(thread, SIGNAL(sendBlock(Block)), this, SLOT(addBlock(Block)));
+//! [connecting signal with custom type]
+
+ QHBoxLayout *buttonLayout = new QHBoxLayout();
+ buttonLayout->addStretch();
+ buttonLayout->addWidget(loadButton);
+ buttonLayout->addWidget(resetButton);
+ buttonLayout->addStretch();
+
+ QVBoxLayout *layout = new QVBoxLayout(this);
+ layout->addWidget(label);
+ layout->addLayout(buttonLayout);
+
+//! [Window constructor finish]
+ setWindowTitle(tr("Queued Custom Type"));
+}
+//! [Window constructor finish]
+
+void Window::loadImage()
+{
+ QStringList formats;
+ foreach (QByteArray format, QImageReader::supportedImageFormats())
+ if (format.toLower() == format)
+ formats.append("*." + format);
+
+ QString newPath = QFileDialog::getOpenFileName(this, tr("Open Image"),
+ path, tr("Image files (%1)").arg(formats.join(" ")));
+
+ if (newPath.isEmpty())
+ return;
+
+ QImage image(newPath);
+ if (!image.isNull()) {
+ loadImage(image);
+ path = newPath;
+ }
+}
+
+void Window::loadImage(const QImage &image)
+{
+ QDesktopWidget desktop;
+ QImage useImage;
+ QRect space = desktop.availableGeometry();
+ if (image.width() > 0.75*space.width() || image.height() > 0.75*space.height())
+ useImage = image.scaled(0.75*space.width(), 0.75*space.height(),
+ Qt::KeepAspectRatio, Qt::SmoothTransformation);
+ else
+ useImage = image;
+
+ pixmap = QPixmap(useImage.width(), useImage.height());
+ pixmap.fill(qRgb(255, 255, 255));
+ label->setPixmap(pixmap);
+ loadButton->setEnabled(false);
+ resetButton->setEnabled(true);
+ thread->processImage(useImage);
+}
+
+//! [Adding blocks to the display]
+void Window::addBlock(const Block &block)
+{
+ QColor color = block.color();
+ color.setAlpha(64);
+
+ QPainter painter;
+ painter.begin(&pixmap);
+ painter.fillRect(block.rect(), color);
+ painter.end();
+ label->setPixmap(pixmap);
+}
+//! [Adding blocks to the display]
+
+void Window::resetUi()
+{
+ loadButton->setEnabled(true);
+ resetButton->setEnabled(false);
+}
diff --git a/examples/threads/queuedcustomtype/window.h b/examples/threads/queuedcustomtype/window.h
new file mode 100644
index 0000000..c0ed280
--- /dev/null
+++ b/examples/threads/queuedcustomtype/window.h
@@ -0,0 +1,77 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef WINDOW_H
+#define WINDOW_H
+
+#include <QWidget>
+#include "renderthread.h"
+
+class QLabel;
+class QPushButton;
+
+//! [Window class definition]
+class Window : public QWidget
+{
+ Q_OBJECT
+
+public:
+ Window();
+ void loadImage(const QImage &image);
+
+public slots:
+ void addBlock(const Block &block);
+
+private slots:
+ void loadImage();
+ void resetUi();
+
+private:
+ QLabel *label;
+ QPixmap pixmap;
+ QPushButton *loadButton;
+ QPushButton *resetButton;
+ QString path;
+ RenderThread *thread;
+};
+//! [Window class definition]
+
+#endif
diff --git a/examples/threads/semaphores/semaphores.cpp b/examples/threads/semaphores/semaphores.cpp
new file mode 100644
index 0000000..548380d
--- /dev/null
+++ b/examples/threads/semaphores/semaphores.cpp
@@ -0,0 +1,107 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+//! [0]
+const int DataSize = 100000;
+const int BufferSize = 8192;
+char buffer[BufferSize];
+
+QSemaphore freeBytes(BufferSize);
+QSemaphore usedBytes;
+//! [0]
+
+//! [1]
+class Producer : public QThread
+//! [1] //! [2]
+{
+public:
+ void run();
+};
+
+void Producer::run()
+{
+ qsrand(QTime(0,0,0).secsTo(QTime::currentTime()));
+ for (int i = 0; i < DataSize; ++i) {
+ freeBytes.acquire();
+ buffer[i % BufferSize] = "ACGT"[(int)qrand() % 4];
+ usedBytes.release();
+ }
+}
+//! [2]
+
+//! [3]
+class Consumer : public QThread
+//! [3] //! [4]
+{
+public:
+ void run();
+};
+
+void Consumer::run()
+{
+ for (int i = 0; i < DataSize; ++i) {
+ usedBytes.acquire();
+ fprintf(stderr, "%c", buffer[i % BufferSize]);
+ freeBytes.release();
+ }
+ fprintf(stderr, "\n");
+}
+//! [4]
+
+//! [5]
+int main(int argc, char *argv[])
+//! [5] //! [6]
+{
+ QCoreApplication app(argc, argv);
+ Producer producer;
+ Consumer consumer;
+ producer.start();
+ consumer.start();
+ producer.wait();
+ consumer.wait();
+ return 0;
+}
+//! [6]
diff --git a/examples/threads/semaphores/semaphores.pro b/examples/threads/semaphores/semaphores.pro
new file mode 100644
index 0000000..2e468b7
--- /dev/null
+++ b/examples/threads/semaphores/semaphores.pro
@@ -0,0 +1,10 @@
+SOURCES += semaphores.cpp
+QT = core
+CONFIG -= app_bundle
+CONFIG += console
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/threads/semaphores
+sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS semaphores.pro
+sources.path = $$[QT_INSTALL_EXAMPLES]/threads/semaphores
+INSTALLS += target sources
diff --git a/examples/threads/threads.pro b/examples/threads/threads.pro
new file mode 100644
index 0000000..a2ccfa7
--- /dev/null
+++ b/examples/threads/threads.pro
@@ -0,0 +1,10 @@
+TEMPLATE = subdirs
+SUBDIRS = mandelbrot \
+ semaphores \
+ waitconditions
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/threads
+sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS threads.pro README
+sources.path = $$[QT_INSTALL_EXAMPLES]/threads
+INSTALLS += target sources
diff --git a/examples/threads/waitconditions/waitconditions.cpp b/examples/threads/waitconditions/waitconditions.cpp
new file mode 100644
index 0000000..44188d5
--- /dev/null
+++ b/examples/threads/waitconditions/waitconditions.cpp
@@ -0,0 +1,126 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+//! [0]
+const int DataSize = 100000;
+const int BufferSize = 8192;
+char buffer[BufferSize];
+
+QWaitCondition bufferNotEmpty;
+QWaitCondition bufferNotFull;
+QMutex mutex;
+int numUsedBytes = 0;
+//! [0]
+
+//! [1]
+class Producer : public QThread
+//! [1] //! [2]
+{
+public:
+ void run();
+};
+
+void Producer::run()
+{
+ qsrand(QTime(0,0,0).secsTo(QTime::currentTime()));
+
+ for (int i = 0; i < DataSize; ++i) {
+ mutex.lock();
+ if (numUsedBytes == BufferSize)
+ bufferNotFull.wait(&mutex);
+ mutex.unlock();
+
+ buffer[i % BufferSize] = "ACGT"[(int)qrand() % 4];
+
+ mutex.lock();
+ ++numUsedBytes;
+ bufferNotEmpty.wakeAll();
+ mutex.unlock();
+ }
+}
+//! [2]
+
+//! [3]
+class Consumer : public QThread
+//! [3] //! [4]
+{
+public:
+ void run();
+};
+
+void Consumer::run()
+{
+ for (int i = 0; i < DataSize; ++i) {
+ mutex.lock();
+ if (numUsedBytes == 0)
+ bufferNotEmpty.wait(&mutex);
+ mutex.unlock();
+
+ fprintf(stderr, "%c", buffer[i % BufferSize]);
+
+ mutex.lock();
+ --numUsedBytes;
+ bufferNotFull.wakeAll();
+ mutex.unlock();
+ }
+ fprintf(stderr, "\n");
+}
+//! [4]
+
+//! [5]
+int main(int argc, char *argv[])
+//! [5] //! [6]
+{
+ QCoreApplication app(argc, argv);
+ Producer producer;
+ Consumer consumer;
+ producer.start();
+ consumer.start();
+ producer.wait();
+ consumer.wait();
+ return 0;
+}
+//! [6]
diff --git a/examples/threads/waitconditions/waitconditions.pro b/examples/threads/waitconditions/waitconditions.pro
new file mode 100644
index 0000000..8c34cec
--- /dev/null
+++ b/examples/threads/waitconditions/waitconditions.pro
@@ -0,0 +1,20 @@
+######################################################################
+# Automatically generated by qmake (1.08a) Fri Jan 7 15:25:07 2005
+######################################################################
+
+TEMPLATE = app
+CONFIG -= moc app_bundle
+DEPENDPATH += .
+INCLUDEPATH += .
+
+# Input
+SOURCES += waitconditions.cpp
+CONFIG += qt warn_on create_prl link_prl console
+OBJECTS_DIR=.obj/debug-shared
+MOC_DIR=.moc/debug-shared
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/threads/waitconditions
+sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS waitconditions.pro
+sources.path = $$[QT_INSTALL_EXAMPLES]/threads/waitconditions
+INSTALLS += target sources