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-rw-r--r--examples/widgets/widgets/scribble/main.cpp51
-rw-r--r--examples/widgets/widgets/scribble/mainwindow.cpp250
-rw-r--r--examples/widgets/widgets/scribble/mainwindow.h92
-rw-r--r--examples/widgets/widgets/scribble/scribble.desktop11
-rw-r--r--examples/widgets/widgets/scribble/scribble.pro14
-rw-r--r--examples/widgets/widgets/scribble/scribblearea.cpp219
-rw-r--r--examples/widgets/widgets/scribble/scribblearea.h90
7 files changed, 727 insertions, 0 deletions
diff --git a/examples/widgets/widgets/scribble/main.cpp b/examples/widgets/widgets/scribble/main.cpp
new file mode 100644
index 0000000000..09a923477c
--- /dev/null
+++ b/examples/widgets/widgets/scribble/main.cpp
@@ -0,0 +1,51 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** 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 <QApplication>
+
+#include "mainwindow.h"
+
+int main(int argc, char *argv[])
+{
+ QApplication app(argc, argv);
+ MainWindow window;
+ window.show();
+ return app.exec();
+}
diff --git a/examples/widgets/widgets/scribble/mainwindow.cpp b/examples/widgets/widgets/scribble/mainwindow.cpp
new file mode 100644
index 0000000000..6db7b39b4c
--- /dev/null
+++ b/examples/widgets/widgets/scribble/mainwindow.cpp
@@ -0,0 +1,250 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** 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 <QtWidgets>
+
+#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]
+
+//! [7]
+void MainWindow::penColor()
+//! [7] //! [8]
+{
+ QColor newColor = QColorDialog::getColor(scribbleArea->penColor());
+ if (newColor.isValid())
+ scribbleArea->setPenColor(newColor);
+}
+//! [8]
+
+//! [9]
+void MainWindow::penWidth()
+//! [9] //! [10]
+{
+ bool ok;
+ int newWidth = QInputDialog::getInt(this, tr("Scribble"),
+ tr("Select pen width:"),
+ scribbleArea->penWidth(),
+ 1, 50, 1, &ok);
+ if (ok)
+ scribbleArea->setPenWidth(newWidth);
+}
+//! [10]
+
+//! [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->setShortcuts(QKeySequence::Open);
+ 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->setShortcuts(QKeySequence::Quit);
+ connect(exitAct, SIGNAL(triggered()), this, SLOT(close()));
+
+ penColorAct = new QAction(tr("&Pen Color..."), this);
+ connect(penColorAct, SIGNAL(triggered()), this, SLOT(penColor()));
+
+ penWidthAct = new QAction(tr("Pen &Width..."), this);
+ connect(penWidthAct, SIGNAL(triggered()), this, SLOT(penWidth()));
+
+ 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(penColorAct);
+ optionMenu->addAction(penWidthAct);
+ optionMenu->addSeparator();
+ 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::fromLatin1(fileFormat.toUpper()))
+ .arg(QString::fromLatin1(fileFormat)));
+ if (fileName.isEmpty()) {
+ return false;
+ } else {
+ return scribbleArea->saveImage(fileName, fileFormat.constData());
+ }
+}
+//! [20]
diff --git a/examples/widgets/widgets/scribble/mainwindow.h b/examples/widgets/widgets/scribble/mainwindow.h
new file mode 100644
index 0000000000..54144340f3
--- /dev/null
+++ b/examples/widgets/widgets/scribble/mainwindow.h
@@ -0,0 +1,92 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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 penColor();
+ void penWidth();
+ 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 *penColorAct;
+ QAction *penWidthAct;
+ QAction *printAct;
+ QAction *clearScreenAct;
+ QAction *aboutAct;
+ QAction *aboutQtAct;
+};
+//! [0]
+
+#endif
diff --git a/examples/widgets/widgets/scribble/scribble.desktop b/examples/widgets/widgets/scribble/scribble.desktop
new file mode 100644
index 0000000000..9c1ee0c482
--- /dev/null
+++ b/examples/widgets/widgets/scribble/scribble.desktop
@@ -0,0 +1,11 @@
+[Desktop Entry]
+Encoding=UTF-8
+Version=1.0
+Type=Application
+Terminal=false
+Name=Scribble
+Exec=/opt/usr/bin/scribble
+Icon=scribble
+X-Window-Icon=
+X-HildonDesk-ShowInToolbar=true
+X-Osso-Type=application/x-executable
diff --git a/examples/widgets/widgets/scribble/scribble.pro b/examples/widgets/widgets/scribble/scribble.pro
new file mode 100644
index 0000000000..9c6e3cb100
--- /dev/null
+++ b/examples/widgets/widgets/scribble/scribble.pro
@@ -0,0 +1,14 @@
+HEADERS = mainwindow.h \
+ scribblearea.h
+SOURCES = main.cpp \
+ mainwindow.cpp \
+ scribblearea.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/qtbase/widgets/scribble
+sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS scribble.pro
+sources.path = $$[QT_INSTALL_EXAMPLES]/qtbase/widgets/scribble
+INSTALLS += target sources
+
+QT += widgets
+!isEmpty(QT.printsupport.name): QT += printsupport
diff --git a/examples/widgets/widgets/scribble/scribblearea.cpp b/examples/widgets/widgets/scribble/scribblearea.cpp
new file mode 100644
index 0000000000..ab527e1d63
--- /dev/null
+++ b/examples/widgets/widgets/scribble/scribblearea.cpp
@@ -0,0 +1,219 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** 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 <QtWidgets>
+#ifndef QT_NO_PRINTER
+#include <QPrinter>
+#include <QPrintDialog>
+#endif
+
+#include "scribblearea.h"
+
+//! [0]
+ScribbleArea::ScribbleArea(QWidget *parent)
+ : QWidget(parent)
+{
+ setAttribute(Qt::WA_StaticContents);
+ modified = false;
+ scribbling = false;
+ myPenWidth = 1;
+ myPenColor = Qt::blue;
+}
+//! [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]
+
+//! [5]
+void ScribbleArea::setPenColor(const QColor &newColor)
+//! [5] //! [6]
+{
+ myPenColor = newColor;
+}
+//! [6]
+
+//! [7]
+void ScribbleArea::setPenWidth(int newWidth)
+//! [7] //! [8]
+{
+ myPenWidth = newWidth;
+}
+//! [8]
+
+//! [9]
+void ScribbleArea::clearImage()
+//! [9] //! [10]
+{
+ image.fill(qRgb(255, 255, 255));
+ modified = true;
+ update();
+}
+//! [10]
+
+//! [11]
+void ScribbleArea::mousePressEvent(QMouseEvent *event)
+//! [11] //! [12]
+{
+ if (event->button() == Qt::LeftButton) {
+ lastPoint = event->pos();
+ scribbling = true;
+ }
+}
+
+void ScribbleArea::mouseMoveEvent(QMouseEvent *event)
+{
+ if ((event->buttons() & Qt::LeftButton) && scribbling)
+ drawLineTo(event->pos());
+}
+
+void ScribbleArea::mouseReleaseEvent(QMouseEvent *event)
+{
+ if (event->button() == Qt::LeftButton && scribbling) {
+ drawLineTo(event->pos());
+ scribbling = false;
+ }
+}
+
+//! [12] //! [13]
+void ScribbleArea::paintEvent(QPaintEvent *event)
+//! [13] //! [14]
+{
+ QPainter painter(this);
+ QRect dirtyRect = event->rect();
+ painter.drawImage(dirtyRect, image, dirtyRect);
+}
+//! [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]
+
+//! [17]
+void ScribbleArea::drawLineTo(const QPoint &endPoint)
+//! [17] //! [18]
+{
+ QPainter painter(&image);
+ painter.setPen(QPen(myPenColor, myPenWidth, Qt::SolidLine, Qt::RoundCap,
+ Qt::RoundJoin));
+ painter.drawLine(lastPoint, endPoint);
+ modified = true;
+
+ int rad = (myPenWidth / 2) + 2;
+ update(QRect(lastPoint, endPoint).normalized()
+ .adjusted(-rad, -rad, +rad, +rad));
+ lastPoint = endPoint;
+}
+//! [18]
+
+//! [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]
diff --git a/examples/widgets/widgets/scribble/scribblearea.h b/examples/widgets/widgets/scribble/scribblearea.h
new file mode 100644
index 0000000000..c95cca7b8d
--- /dev/null
+++ b/examples/widgets/widgets/scribble/scribblearea.h
@@ -0,0 +1,90 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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);
+ void setPenColor(const QColor &newColor);
+ void setPenWidth(int newWidth);
+
+ bool isModified() const { return modified; }
+ QColor penColor() const { return myPenColor; }
+ int penWidth() const { return myPenWidth; }
+
+public slots:
+ void clearImage();
+ void print();
+
+protected:
+ void mousePressEvent(QMouseEvent *event);
+ void mouseMoveEvent(QMouseEvent *event);
+ void mouseReleaseEvent(QMouseEvent *event);
+ void paintEvent(QPaintEvent *event);
+ void resizeEvent(QResizeEvent *event);
+
+private:
+ void drawLineTo(const QPoint &endPoint);
+ void resizeImage(QImage *image, const QSize &newSize);
+
+ bool modified;
+ bool scribbling;
+ int myPenWidth;
+ QColor myPenColor;
+ QImage image;
+ QPoint lastPoint;
+};
+//! [0]
+
+#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-02 01:59:58 +0000