--- a/examples/multitouch/fingerpaint/scribblearea.cpp Fri Sep 17 08:34:18 2010 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,211 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the examples of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-** * Redistributions of source code must retain the above copyright
-** notice, this list of conditions and the following disclaimer.
-** * Redistributions in binary form must reproduce the above copyright
-** notice, this list of conditions and the following disclaimer in
-** the documentation and/or other materials provided with the
-** distribution.
-** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
-** the names of its contributors may be used to endorse or promote
-** products derived from this software without specific prior written
-** permission.
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include <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 (const QTouchEvent::TouchPoint &touchPoint, touchPoints) {
- switch (touchPoint.state()) {
- case Qt::TouchPointStationary:
- // don't do anything if this touch point hasn't moved
- continue;
- default:
- {
- QRectF rect = touchPoint.rect();
- if (rect.isEmpty()) {
- qreal diameter = qreal(50) * touchPoint.pressure();
- rect.setSize(QSizeF(diameter, diameter));
- }
-
- QPainter painter(&image);
- painter.setPen(Qt::NoPen);
- painter.setBrush(myPenColors.at(touchPoint.id() % myPenColors.count()));
- painter.drawEllipse(rect);
- painter.end();
-
- modified = true;
- int rad = 2;
- update(rect.toRect().adjusted(-rad,-rad, +rad, +rad));
- }
- break;
- }
- }
- break;
- }
- default:
- return QWidget::event(event);
- }
- return true;
-}