diff options
Diffstat (limited to 'examples/threads/queuedcustomtype')
-rw-r--r-- | examples/threads/queuedcustomtype/block.cpp | 74 | ||||
-rw-r--r-- | examples/threads/queuedcustomtype/block.h | 71 | ||||
-rw-r--r-- | examples/threads/queuedcustomtype/main.cpp | 129 | ||||
-rw-r--r-- | examples/threads/queuedcustomtype/queuedcustomtype.pro | 7 | ||||
-rw-r--r-- | examples/threads/queuedcustomtype/renderthread.cpp | 110 | ||||
-rw-r--r-- | examples/threads/queuedcustomtype/renderthread.h | 77 | ||||
-rw-r--r-- | examples/threads/queuedcustomtype/window.cpp | 137 | ||||
-rw-r--r-- | examples/threads/queuedcustomtype/window.h | 77 |
8 files changed, 682 insertions, 0 deletions
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 |