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Diffstat (limited to 'doc/src/snippets/dialogs/dialogs.cpp')
| -rw-r--r-- | doc/src/snippets/dialogs/dialogs.cpp | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/doc/src/snippets/dialogs/dialogs.cpp b/doc/src/snippets/dialogs/dialogs.cpp new file mode 100644 index 0000000000..de9a2d1e04 --- /dev/null +++ b/doc/src/snippets/dialogs/dialogs.cpp @@ -0,0 +1,268 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the documentation 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> + +typedef QDialog WordCountDialog; +typedef QDialog FindDialog; + +#define this 0 +#define setWordCount(x) isVisible() + +QString tr(const char *text) +{ + return QApplication::translate(text, text); +} + +class EditorWindow : public QMainWindow +{ +public: + void find(); + void countWords(); + +private: + FindDialog *findDialog; +}; + +//! [0] +void EditorWindow::find() +{ + if (!findDialog) { + findDialog = new FindDialog(this); + connect(findDialog, SIGNAL(findNext()), this, SLOT(findNext())); + } + + findDialog->show(); + findDialog->raise(); + findDialog->activateWindow(); +} +//! [0] + +//! [1] +void EditorWindow::countWords() +{ + WordCountDialog dialog(this); + dialog.setWordCount(document().wordCount()); + dialog.exec(); +} +//! [1] + +inline bool boo() +{ + QMessageBox::information(this, "Application name", + "Unable to find the user preferences file.\n" + "The factory default will be used instead."); + + QString filename; + if (QFile::exists(filename) && + QMessageBox::question( + this, + tr("Overwrite File? -- Application Name"), + tr("A file called %1 already exists." + "Do you want to overwrite it?") + .arg(filename), + tr("&Yes"), tr("&No"), + QString(), 0, 1)) + return false; + + switch(QMessageBox::warning(this, "Application name", + "Could not connect to the <mumble> server.\n" + "This program can't function correctly " + "without the server.\n\n", + "Retry", + "Quit", 0, 0, 1)) { + case 0: // The user clicked the Retry again button or pressed Enter + // try again + break; + case 1: // The user clicked the Quit or pressed Escape + // exit + break; + } + + switch(QMessageBox::information(this, "Application name here", + "The document contains unsaved changes\n" + "Do you want to save the changes before exiting?", + "&Save", "&Discard", "Cancel", + 0, // Enter == button 0 + 2)) { // Escape == button 2 + case 0: // Save clicked or Alt+S pressed or Enter pressed. + // save + break; + case 1: // Discard clicked or Alt+D pressed + // don't save but exit + break; + case 2: // Cancel clicked or Escape pressed + // don't exit + break; + } + + switch(QMessageBox::warning(this, "Application name here", + "Could not save the user preferences,\n" + "because the disk is full. You can delete\n" + "some files and press Retry, or you can\n" + "abort the Save Preferences operation.", + QMessageBox::Retry | QMessageBox::Default, + QMessageBox::Abort | QMessageBox::Escape)) { + case QMessageBox::Retry: // Retry clicked or Enter pressed + // try again + break; + case QMessageBox::Abort: // Abort clicked or Escape pressed + // abort + break; + } + + QString errorDetails; + QMessageBox::critical(0, "Application name here", + QString("An internal error occurred. Please ") + + "call technical support at 1234-56789 and report\n"+ + "these numbers:\n\n" + errorDetails + + "\n\nApplication will now exit."); + + QMessageBox::about(this, "About <Application>", + "<Application> is a <one-paragraph blurb>\n\n" + "Copyright 1991-2003 Such-and-such. " + "<License words here.>\n\n" + "For technical support, call 1234-56789 or see\n" + "http://www.such-and-such.com/Application/\n"); + + { + // saving the file + QMessageBox mb("Application name here", + "Saving the file will overwrite the original file on the disk.\n" + "Do you really want to save?", + QMessageBox::Information, + QMessageBox::Yes | QMessageBox::Default, + QMessageBox::No, + QMessageBox::Cancel | QMessageBox::Escape); + mb.setButtonText(QMessageBox::Yes, "Save"); + mb.setButtonText(QMessageBox::No, "Discard"); + switch(mb.exec()) { + case QMessageBox::Yes: + // save and exit + break; + case QMessageBox::No: + // exit without saving + break; + case QMessageBox::Cancel: + // don't save and don't exit + break; + } + } + + { + // hardware failure +//! [2] + QMessageBox mb("Application Name", + "Hardware failure.\n\nDisk error detected\nDo you want to stop?", + QMessageBox::Question, + QMessageBox::Yes | QMessageBox::Default, + QMessageBox::No | QMessageBox::Escape, + QMessageBox::NoButton); + if (mb.exec() == QMessageBox::No) { + // try again +//! [2] + } + } +} + +inline void moo() +{ + int numFiles; +//! [3] + QProgressDialog progress("Copying files...", "Abort Copy", 0, numFiles, this); + progress.setWindowModality(Qt::WindowModal); + + for (int i = 0; i < numFiles; i++) { + progress.setValue(i); + + if (progress.wasCanceled()) + break; + //... copy one file + } + progress.setValue(numFiles); +//! [3] +} + +class Operation : public QObject +{ +public: + Operation(QObject *parent); + void perform(); + void cancel(); + +private: + int steps; + QProgressDialog *pd; + QTimer *t; +}; + +//! [4] +// Operation constructor +Operation::Operation(QObject *parent) + : QObject(parent), steps(0) +{ + pd = new QProgressDialog("Operation in progress.", "Cancel", 0, 100); + connect(pd, SIGNAL(canceled()), this, SLOT(cancel())); + t = new QTimer(this); + connect(t, SIGNAL(timeout()), this, SLOT(perform())); + t->start(0); +} +//! [4] //! [5] + +void Operation::perform() +{ + pd->setValue(steps); + //... perform one percent of the operation + steps++; + if (steps > pd->maximum()) + t->stop(); +} +//! [5] //! [6] + +void Operation::cancel() +{ + t->stop(); + //... cleanup +} +//! [6] + +int main() +{ +} |