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-rw-r--r--examples/multitouch/fingerpaint/fingerpaint.pro11
-rw-r--r--examples/multitouch/fingerpaint/main.cpp52
-rw-r--r--examples/multitouch/fingerpaint/mainwindow.cpp218
-rw-r--r--examples/multitouch/fingerpaint/mainwindow.h89
-rw-r--r--examples/multitouch/fingerpaint/scribblearea.cpp213
-rw-r--r--examples/multitouch/fingerpaint/scribblearea.h81
6 files changed, 664 insertions, 0 deletions
diff --git a/examples/multitouch/fingerpaint/fingerpaint.pro b/examples/multitouch/fingerpaint/fingerpaint.pro
new file mode 100644
index 0000000..1d45635
--- /dev/null
+++ b/examples/multitouch/fingerpaint/fingerpaint.pro
@@ -0,0 +1,11 @@
+HEADERS = mainwindow.h \
+ scribblearea.h
+SOURCES = main.cpp \
+ mainwindow.cpp \
+ scribblearea.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/multitouch/fingerpaint
+sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS fingerpaint.pro
+sources.path = $$[QT_INSTALL_EXAMPLES]/multitouch/fingerpaint
+INSTALLS += target sources
diff --git a/examples/multitouch/fingerpaint/main.cpp b/examples/multitouch/fingerpaint/main.cpp
new file mode 100644
index 0000000..49bf25b
--- /dev/null
+++ b/examples/multitouch/fingerpaint/main.cpp
@@ -0,0 +1,52 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the $MODULE$ of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial Usage
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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 "mainwindow.h"
+
+int main(int argc, char *argv[])
+{
+ QApplication app(argc, argv);
+ MainWindow window;
+ window.showMaximized();
+ return app.exec();
+}
diff --git a/examples/multitouch/fingerpaint/mainwindow.cpp b/examples/multitouch/fingerpaint/mainwindow.cpp
new file mode 100644
index 0000000..546c685
--- /dev/null
+++ b/examples/multitouch/fingerpaint/mainwindow.cpp
@@ -0,0 +1,218 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the $MODULE$ of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial Usage
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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 "mainwindow.h"
+#include "scribblearea.h"
+
+//! [0]
+MainWindow::MainWindow()
+{
+ scribbleArea = new ScribbleArea;
+ setCentralWidget(scribbleArea);
+
+ createActions();
+ createMenus();
+
+ setWindowTitle(tr("Scribble"));
+ resize(500, 500);
+}
+//! [0]
+
+//! [1]
+void MainWindow::closeEvent(QCloseEvent *event)
+//! [1] //! [2]
+{
+ if (maybeSave()) {
+ event->accept();
+ } else {
+ event->ignore();
+ }
+}
+//! [2]
+
+//! [3]
+void MainWindow::open()
+//! [3] //! [4]
+{
+ if (maybeSave()) {
+ QString fileName = QFileDialog::getOpenFileName(this,
+ tr("Open File"), QDir::currentPath());
+ if (!fileName.isEmpty())
+ scribbleArea->openImage(fileName);
+ }
+}
+//! [4]
+
+//! [5]
+void MainWindow::save()
+//! [5] //! [6]
+{
+ QAction *action = qobject_cast<QAction *>(sender());
+ QByteArray fileFormat = action->data().toByteArray();
+ saveFile(fileFormat);
+}
+//! [6]
+
+//! [11]
+void MainWindow::about()
+//! [11] //! [12]
+{
+ QMessageBox::about(this, tr("About Scribble"),
+ tr("<p>The <b>Scribble</b> example shows how to use QMainWindow as the "
+ "base widget for an application, and how to reimplement some of "
+ "QWidget's event handlers to receive the events generated for "
+ "the application's widgets:</p><p> We reimplement the mouse event "
+ "handlers to facilitate drawing, the paint event handler to "
+ "update the application and the resize event handler to optimize "
+ "the application's appearance. In addition we reimplement the "
+ "close event handler to intercept the close events before "
+ "terminating the application.</p><p> The example also demonstrates "
+ "how to use QPainter to draw an image in real time, as well as "
+ "to repaint widgets.</p>"));
+}
+//! [12]
+
+//! [13]
+void MainWindow::createActions()
+//! [13] //! [14]
+{
+ openAct = new QAction(tr("&Open..."), this);
+ openAct->setShortcut(tr("Ctrl+O"));
+ connect(openAct, SIGNAL(triggered()), this, SLOT(open()));
+
+ foreach (QByteArray format, QImageWriter::supportedImageFormats()) {
+ QString text = tr("%1...").arg(QString(format).toUpper());
+
+ QAction *action = new QAction(text, this);
+ action->setData(format);
+ connect(action, SIGNAL(triggered()), this, SLOT(save()));
+ saveAsActs.append(action);
+ }
+
+ printAct = new QAction(tr("&Print..."), this);
+ connect(printAct, SIGNAL(triggered()), scribbleArea, SLOT(print()));
+
+ exitAct = new QAction(tr("E&xit"), this);
+ exitAct->setShortcut(tr("Ctrl+Q"));
+ connect(exitAct, SIGNAL(triggered()), this, SLOT(close()));
+
+ clearScreenAct = new QAction(tr("&Clear Screen"), this);
+ clearScreenAct->setShortcut(tr("Ctrl+L"));
+ connect(clearScreenAct, SIGNAL(triggered()),
+ scribbleArea, SLOT(clearImage()));
+
+ aboutAct = new QAction(tr("&About"), this);
+ connect(aboutAct, SIGNAL(triggered()), this, SLOT(about()));
+
+ aboutQtAct = new QAction(tr("About &Qt"), this);
+ connect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
+}
+//! [14]
+
+//! [15]
+void MainWindow::createMenus()
+//! [15] //! [16]
+{
+ saveAsMenu = new QMenu(tr("&Save As"), this);
+ foreach (QAction *action, saveAsActs)
+ saveAsMenu->addAction(action);
+
+ fileMenu = new QMenu(tr("&File"), this);
+ fileMenu->addAction(openAct);
+ fileMenu->addMenu(saveAsMenu);
+ fileMenu->addAction(printAct);
+ fileMenu->addSeparator();
+ fileMenu->addAction(exitAct);
+
+ optionMenu = new QMenu(tr("&Options"), this);
+ optionMenu->addAction(clearScreenAct);
+
+ helpMenu = new QMenu(tr("&Help"), this);
+ helpMenu->addAction(aboutAct);
+ helpMenu->addAction(aboutQtAct);
+
+ menuBar()->addMenu(fileMenu);
+ menuBar()->addMenu(optionMenu);
+ menuBar()->addMenu(helpMenu);
+}
+//! [16]
+
+//! [17]
+bool MainWindow::maybeSave()
+//! [17] //! [18]
+{
+ if (scribbleArea->isModified()) {
+ QMessageBox::StandardButton ret;
+ ret = QMessageBox::warning(this, tr("Scribble"),
+ tr("The image has been modified.\n"
+ "Do you want to save your changes?"),
+ QMessageBox::Save | QMessageBox::Discard
+ | QMessageBox::Cancel);
+ if (ret == QMessageBox::Save) {
+ return saveFile("png");
+ } else if (ret == QMessageBox::Cancel) {
+ return false;
+ }
+ }
+ return true;
+}
+//! [18]
+
+//! [19]
+bool MainWindow::saveFile(const QByteArray &fileFormat)
+//! [19] //! [20]
+{
+ QString initialPath = QDir::currentPath() + "/untitled." + fileFormat;
+
+ QString fileName = QFileDialog::getSaveFileName(this, tr("Save As"),
+ initialPath,
+ tr("%1 Files (*.%2);;All Files (*)")
+ .arg(QString(fileFormat.toUpper()))
+ .arg(QString(fileFormat)));
+ if (fileName.isEmpty()) {
+ return false;
+ } else {
+ return scribbleArea->saveImage(fileName, fileFormat);
+ }
+}
+//! [20]
diff --git a/examples/multitouch/fingerpaint/mainwindow.h b/examples/multitouch/fingerpaint/mainwindow.h
new file mode 100644
index 0000000..fdb790d
--- /dev/null
+++ b/examples/multitouch/fingerpaint/mainwindow.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 $MODULE$ of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial Usage
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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 MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QList>
+#include <QMainWindow>
+
+class ScribbleArea;
+
+//! [0]
+class MainWindow : public QMainWindow
+{
+ Q_OBJECT
+
+public:
+ MainWindow();
+
+protected:
+ void closeEvent(QCloseEvent *event);
+
+private slots:
+ void open();
+ void save();
+ void about();
+
+private:
+ void createActions();
+ void createMenus();
+ bool maybeSave();
+ bool saveFile(const QByteArray &fileFormat);
+
+ ScribbleArea *scribbleArea;
+
+ QMenu *saveAsMenu;
+ QMenu *fileMenu;
+ QMenu *optionMenu;
+ QMenu *helpMenu;
+
+ QAction *openAct;
+ QList<QAction *> saveAsActs;
+ QAction *exitAct;
+ QAction *printAct;
+ QAction *clearScreenAct;
+ QAction *aboutAct;
+ QAction *aboutQtAct;
+};
+//! [0]
+
+#endif
diff --git a/examples/multitouch/fingerpaint/scribblearea.cpp b/examples/multitouch/fingerpaint/scribblearea.cpp
new file mode 100644
index 0000000..a042fe7
--- /dev/null
+++ b/examples/multitouch/fingerpaint/scribblearea.cpp
@@ -0,0 +1,213 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the $MODULE$ of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial Usage
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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 "scribblearea.h"
+
+//! [0]
+ScribbleArea::ScribbleArea(QWidget *parent)
+ : QWidget(parent)
+{
+ setAttribute(Qt::WA_AcceptTouchEvents);
+ setAttribute(Qt::WA_StaticContents);
+ modified = false;
+
+ myPenColors
+ << QColor("green")
+ << QColor("purple")
+ << QColor("red")
+ << QColor("blue")
+ << QColor("yellow")
+
+ << QColor("pink")
+ << QColor("orange")
+ << QColor("brown")
+ << QColor("grey")
+ << QColor("black");
+}
+//! [0]
+
+//! [1]
+bool ScribbleArea::openImage(const QString &fileName)
+//! [1] //! [2]
+{
+ QImage loadedImage;
+ if (!loadedImage.load(fileName))
+ return false;
+
+ QSize newSize = loadedImage.size().expandedTo(size());
+ resizeImage(&loadedImage, newSize);
+ image = loadedImage;
+ modified = false;
+ update();
+ return true;
+}
+//! [2]
+
+//! [3]
+bool ScribbleArea::saveImage(const QString &fileName, const char *fileFormat)
+//! [3] //! [4]
+{
+ QImage visibleImage = image;
+ resizeImage(&visibleImage, size());
+
+ if (visibleImage.save(fileName, fileFormat)) {
+ modified = false;
+ return true;
+ } else {
+ return false;
+ }
+}
+//! [4]
+
+//! [9]
+void ScribbleArea::clearImage()
+//! [9] //! [10]
+{
+ image.fill(qRgb(255, 255, 255));
+ modified = true;
+ update();
+}
+//! [10]
+
+//! [12] //! [13]
+void ScribbleArea::paintEvent(QPaintEvent *event)
+//! [13] //! [14]
+{
+ QPainter painter(this);
+ const QRect rect = event->rect();
+ painter.drawImage(rect.topLeft(), image, rect);
+}
+//! [14]
+
+//! [15]
+void ScribbleArea::resizeEvent(QResizeEvent *event)
+//! [15] //! [16]
+{
+ if (width() > image.width() || height() > image.height()) {
+ int newWidth = qMax(width() + 128, image.width());
+ int newHeight = qMax(height() + 128, image.height());
+ resizeImage(&image, QSize(newWidth, newHeight));
+ update();
+ }
+ QWidget::resizeEvent(event);
+}
+//! [16]
+
+//! [19]
+void ScribbleArea::resizeImage(QImage *image, const QSize &newSize)
+//! [19] //! [20]
+{
+ if (image->size() == newSize)
+ return;
+
+ QImage newImage(newSize, QImage::Format_RGB32);
+ newImage.fill(qRgb(255, 255, 255));
+ QPainter painter(&newImage);
+ painter.drawImage(QPoint(0, 0), *image);
+ *image = newImage;
+}
+//! [20]
+
+//! [21]
+void ScribbleArea::print()
+{
+#ifndef QT_NO_PRINTER
+ QPrinter printer(QPrinter::HighResolution);
+
+ QPrintDialog *printDialog = new QPrintDialog(&printer, this);
+//! [21] //! [22]
+ if (printDialog->exec() == QDialog::Accepted) {
+ QPainter painter(&printer);
+ QRect rect = painter.viewport();
+ QSize size = image.size();
+ size.scale(rect.size(), Qt::KeepAspectRatio);
+ painter.setViewport(rect.x(), rect.y(), size.width(), size.height());
+ painter.setWindow(image.rect());
+ painter.drawImage(0, 0, image);
+ }
+#endif // QT_NO_PRINTER
+}
+//! [22]
+
+bool ScribbleArea::event(QEvent *event)
+{
+ switch (event->type()) {
+ case QEvent::TouchBegin:
+ case QEvent::TouchUpdate:
+ case QEvent::TouchEnd:
+ {
+ QList<QTouchEvent::TouchPoint *> touchPoints = static_cast<QTouchEvent *>(event)->touchPoints();
+ foreach (QTouchEvent::TouchPoint *touchPoint, touchPoints) {
+ switch (touchPoint->state()) {
+ case Qt::TouchPointStationary:
+ // don't do anything if this touch point hasn't moved
+ continue;
+ default:
+ {
+ int diameter = int(50 * touchPoint->pressure());
+ QRectF rectF(0, 0, diameter, diameter);
+ rectF.moveCenter(touchPoint->pos());
+ QRect rect = rectF.toRect();
+
+ QPainter painter(&image);
+ painter.setPen(Qt::NoPen);
+ painter.setBrush(myPenColors.at(touchPoint->id()));
+ painter.drawEllipse(rectF);
+ painter.end();
+
+ modified = true;
+ int rad = 2;
+ update(rect.adjusted(-rad,-rad, +rad, +rad));
+ }
+ break;
+ }
+ }
+
+ event->accept();
+ return true;
+ }
+ default:
+ break;
+ }
+ return QWidget::event(event);
+}
diff --git a/examples/multitouch/fingerpaint/scribblearea.h b/examples/multitouch/fingerpaint/scribblearea.h
new file mode 100644
index 0000000..8928ce1
--- /dev/null
+++ b/examples/multitouch/fingerpaint/scribblearea.h
@@ -0,0 +1,81 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the $MODULE$ of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial Usage
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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 SCRIBBLEAREA_H
+#define SCRIBBLEAREA_H
+
+#include <QColor>
+#include <QImage>
+#include <QPoint>
+#include <QWidget>
+
+//! [0]
+class ScribbleArea : public QWidget
+{
+ Q_OBJECT
+
+public:
+ ScribbleArea(QWidget *parent = 0);
+
+ bool openImage(const QString &fileName);
+ bool saveImage(const QString &fileName, const char *fileFormat);
+
+ bool isModified() const { return modified; }
+
+public slots:
+ void clearImage();
+ void print();
+
+protected:
+ void paintEvent(QPaintEvent *event);
+ void resizeEvent(QResizeEvent *event);
+ bool event(QEvent *event);
+
+private:
+ void resizeImage(QImage *image, const QSize &newSize);
+
+ bool modified;
+ QList<QColor> myPenColors;
+ QImage image;
+};
+//! [0]
+
+#endif
generated by cgit v0.12 at 2024-12-26 19:01:01 (GMT)