в 14:21, 25 мая 2010

2010-05-25T14:21:06Z

Admin: 1 версия: Импорт контента...

2010-05-25T10:24:38Z

1 версия: Импорт контента...

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==Docking widget==

<source lang="cpp">
/****************************************************************************
**
** Copyright (C) 2009 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 1.1, 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 have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
QT_BEGIN_NAMESPACE
class QAction;
class QListWidget;
class QMenu;
class QTextEdit;
QT_END_NAMESPACE

class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow();
private slots:
void newLetter();
void save();
void print();
void undo();
void about();
void insertCustomer(const QString &customer);
void addParagraph(const QString &paragraph);
private:
void createActions();
void createMenus();
void createToolBars();
void createStatusBar();
void createDockWindows();
QTextEdit *textEdit;
QListWidget *customerList;
QListWidget *paragraphsList;
QMenu *fileMenu;
QMenu *editMenu;
QMenu *viewMenu;
QMenu *helpMenu;
QToolBar *fileToolBar;
QToolBar *editToolBar;
QAction *newLetterAct;
QAction *saveAct;
QAction *printAct;
QAction *undoAct;
QAction *aboutAct;
QAction *aboutQtAct;
QAction *quitAct;
};

#endif

#include <QtGui>
#include "mainwindow.h"

MainWindow::MainWindow()
{
textEdit = new QTextEdit;
setCentralWidget(textEdit);
createActions();
createMenus();
createToolBars();
createStatusBar();
createDockWindows();
setWindowTitle(tr("Dock Widgets"));
newLetter();
setUnifiedTitleAndToolBarOnMac(true);
}

void MainWindow::newLetter()
{
textEdit->clear();
QTextCursor cursor(textEdit->textCursor());
cursor.movePosition(QTextCursor::Start);
QTextFrame *topFrame = cursor.currentFrame();
QTextFrameFormat topFrameFormat = topFrame->frameFormat();
topFrameFormat.setPadding(16);
topFrame->setFrameFormat(topFrameFormat);
QTextCharFormat textFormat;
QTextCharFormat boldFormat;
boldFormat.setFontWeight(QFont::Bold);
QTextCharFormat italicFormat;
italicFormat.setFontItalic(true);
QTextTableFormat tableFormat;
tableFormat.setBorder(1);
tableFormat.setCellPadding(16);
tableFormat.setAlignment(Qt::AlignRight);
cursor.insertTable(1, 1, tableFormat);
cursor.insertText("The Firm", boldFormat);
cursor.insertBlock();
cursor.insertText("321 City Street", textFormat);
cursor.insertBlock();
cursor.insertText("Industry Park");
cursor.insertBlock();
cursor.insertText("Some Country");
cursor.setPosition(topFrame->lastPosition());
cursor.insertText(QDate::currentDate().toString("d MMMM yyyy"), textFormat);
cursor.insertBlock();
cursor.insertBlock();
cursor.insertText("Dear ", textFormat);
cursor.insertText("NAME", italicFormat);
cursor.insertText(",", textFormat);
for (int i = 0; i < 3; ++i)
cursor.insertBlock();
cursor.insertText(tr("Yours sincerely,"), textFormat);
for (int i = 0; i < 3; ++i)
cursor.insertBlock();
cursor.insertText("The Boss", textFormat);
cursor.insertBlock();
cursor.insertText("ADDRESS", italicFormat);
}

void MainWindow::print()
{
#ifndef QT_NO_PRINTDIALOG
QTextDocument *document = textEdit->document();
QPrinter printer;
QPrintDialog *dlg = new QPrintDialog(&printer, this);
if (dlg->exec() != QDialog::Accepted)
return;
document->print(&printer);
statusBar()->showMessage(tr("Ready"), 2000);
#endif
}

void MainWindow::save()
{
QString fileName = QFileDialog::getSaveFileName(this,
tr("Choose a file name"), ".",
tr("HTML (*.html *.htm)"));
if (fileName.isEmpty())
return;
QFile file(fileName);
if (!file.open(QFile::WriteOnly | QFile::Text)) {
QMessageBox::warning(this, tr("Dock Widgets"),
tr("Cannot write file %1:\n%2.")
.arg(fileName)
.arg(file.errorString()));
return;
}
QTextStream out(&file);
QApplication::setOverrideCursor(Qt::WaitCursor);
out << textEdit->toHtml();
QApplication::restoreOverrideCursor();
statusBar()->showMessage(tr("Saved "%1"").arg(fileName), 2000);
}

void MainWindow::undo()
{
QTextDocument *document = textEdit->document();
document->undo();
}

void MainWindow::insertCustomer(const QString &customer)
{
if (customer.isEmpty())
return;
QStringList customerList = customer.split(", ");
QTextDocument *document = textEdit->document();
QTextCursor cursor = document->find("NAME");
if (!cursor.isNull()) {
cursor.beginEditBlock();
cursor.insertText(customerList.at(0));
QTextCursor oldcursor = cursor;
cursor = document->find("ADDRESS");
if (!cursor.isNull()) {
for (int i = 1; i < customerList.size(); ++i) {
cursor.insertBlock();
cursor.insertText(customerList.at(i));
}
cursor.endEditBlock();
}
else
oldcursor.endEditBlock();
}
}

void MainWindow::addParagraph(const QString &paragraph)
{
if (paragraph.isEmpty())
return;
QTextDocument *document = textEdit->document();
QTextCursor cursor = document->find(tr("Yours sincerely,"));
if (cursor.isNull())
return;
cursor.beginEditBlock();
cursor.movePosition(QTextCursor::PreviousBlock, QTextCursor::MoveAnchor, 2);
cursor.insertBlock();
cursor.insertText(paragraph);
cursor.insertBlock();
cursor.endEditBlock();
}

void MainWindow::about()
{
QMessageBox::about(this, tr("About Dock Widgets"),
tr("The <b>Dock Widgets</b> example demonstrates how to "
"use Qt"s dock widgets. You can enter your own text, "
"click a customer to add a customer name and "
"address, and click standard paragraphs to add them."));
}
void MainWindow::createActions()
{
newLetterAct = new QAction(QIcon(":/images/new.png"), tr("&New Letter"),
this);
newLetterAct->setShortcuts(QKeySequence::New);
newLetterAct->setStatusTip(tr("Create a new form letter"));
connect(newLetterAct, SIGNAL(triggered()), this, SLOT(newLetter()));
saveAct = new QAction(QIcon(":/images/save.png"), tr("&Save..."), this);
saveAct->setShortcuts(QKeySequence::Save);
saveAct->setStatusTip(tr("Save the current form letter"));
connect(saveAct, SIGNAL(triggered()), this, SLOT(save()));
printAct = new QAction(QIcon(":/images/print.png"), tr("&Print..."), this);
printAct->setShortcuts(QKeySequence::Print);
printAct->setStatusTip(tr("Print the current form letter"));
connect(printAct, SIGNAL(triggered()), this, SLOT(print()));
undoAct = new QAction(QIcon(":/images/undo.png"), tr("&Undo"), this);
undoAct->setShortcuts(QKeySequence::Undo);
undoAct->setStatusTip(tr("Undo the last editing action"));
connect(undoAct, SIGNAL(triggered()), this, SLOT(undo()));
quitAct = new QAction(tr("&Quit"), this);
quitAct->setShortcut(tr("Ctrl+Q"));
quitAct->setStatusTip(tr("Quit the application"));
connect(quitAct, SIGNAL(triggered()), this, SLOT(close()));
aboutAct = new QAction(tr("&About"), this);
aboutAct->setStatusTip(tr("Show the application"s About box"));
connect(aboutAct, SIGNAL(triggered()), this, SLOT(about()));
aboutQtAct = new QAction(tr("About &Qt"), this);
aboutQtAct->setStatusTip(tr("Show the Qt library"s About box"));
connect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
}
void MainWindow::createMenus()
{
fileMenu = menuBar()->addMenu(tr("&File"));
fileMenu->addAction(newLetterAct);
fileMenu->addAction(saveAct);
fileMenu->addAction(printAct);
fileMenu->addSeparator();
fileMenu->addAction(quitAct);
editMenu = menuBar()->addMenu(tr("&Edit"));
editMenu->addAction(undoAct);
viewMenu = menuBar()->addMenu(tr("&View"));
menuBar()->addSeparator();
helpMenu = menuBar()->addMenu(tr("&Help"));
helpMenu->addAction(aboutAct);
helpMenu->addAction(aboutQtAct);
}
void MainWindow::createToolBars()
{
fileToolBar = addToolBar(tr("File"));
fileToolBar->addAction(newLetterAct);
fileToolBar->addAction(saveAct);
fileToolBar->addAction(printAct);
editToolBar = addToolBar(tr("Edit"));
editToolBar->addAction(undoAct);
}

void MainWindow::createStatusBar()
{
statusBar()->showMessage(tr("Ready"));
}

void MainWindow::createDockWindows()
{
QDockWidget *dock = new QDockWidget(tr("Customers"), this);
dock->setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea);
customerList = new QListWidget(dock);
customerList->addItems(QStringList()
<< "John Doe, Harmony Enterprises, 12 Lakeside, Ambleton"
<< "Jane Doe, Memorabilia, 23 Watersedge, Beaton"
<< "Tammy Shea, Tiblanka, 38 Sea Views, Carlton"
<< "Tim Sheen, Caraba Gifts, 48 Ocean Way, Deal"
<< "Sol Harvey, Chicos Coffee, 53 New Springs, Eccleston"
<< "Sally Hobart, Tiroli Tea, 67 Long River, Fedula");
dock->setWidget(customerList);
addDockWidget(Qt::RightDockWidgetArea, dock);
viewMenu->addAction(dock->toggleViewAction());
dock = new QDockWidget(tr("Paragraphs"), this);
paragraphsList = new QListWidget(dock);
paragraphsList->addItems(QStringList()
<< "Thank you for your payment which we have received today."
<< "Your order has been dispatched and should be with you "
"within 28 days."
<< "We have dispatched those items that were in stock. The "
"rest of your order will be dispatched once all the "
"remaining items have arrived at our warehouse. No "
"additional shipping charges will be made."
<< "You made a small overpayment (less than $5) which we "
"will keep on account for you, or return at your request."
<< "You made a small underpayment (less than $1), but we have "
"sent your order anyway. We"ll add this underpayment to "
"your next bill."
<< "Unfortunately you did not send enough money. Please remit "
"an additional $. Your order will be dispatched as soon as "
"the complete amount has been received."
<< "You made an overpayment (more than $5). Do you wish to "
"buy more items, or should we return the excess to you?");
dock->setWidget(paragraphsList);
addDockWidget(Qt::RightDockWidgetArea, dock);
viewMenu->addAction(dock->toggleViewAction());
connect(customerList, SIGNAL(currentTextChanged(const QString &)),
this, SLOT(insertCustomer(const QString &)));
connect(paragraphsList, SIGNAL(currentTextChanged(const QString &)),
this, SLOT(addParagraph(const QString &)));
}

#include <QApplication>
#include "mainwindow.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
Q_INIT_RESOURCE(dockwidgets);
MainWindow mainWin;
mainWin.show();
return app.exec();
}

</source>

==Using QDockWidget==

<source lang="cpp">
/****************************************************************************
**
** Copyright (C) 2009 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 1.1, 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 have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
class QDockWidget;
class QListWidget;
class QListWidgetItem;
class QTextBrowser;
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow(QWidget *parent = 0);
private slots:
void updateText(QListWidgetItem *item);
private:
void setupContents();
void setupDockWindow();
void setupMenus();
QDockWidget *contentsWindow;
QListWidget *headingList;
QTextBrowser *textBrowser;
};
#endif

#include <QtGui>
#include "mainwindow.h"
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
setWindowTitle("Dock Widgets");
setupDockWindow();
setupContents();
setupMenus();
textBrowser = new QTextBrowser(this);
connect(headingList, SIGNAL(itemClicked(QListWidgetItem *)),
this, SLOT(updateText(QListWidgetItem *)));
updateText(headingList->item(0));
headingList->setCurrentRow(0);
setCentralWidget(textBrowser);
}
void MainWindow::setupContents()
{
QFile titlesFile(":/Resources/titles.txt");
titlesFile.open(QFile::ReadOnly);
int chapter = 0;
do {
QString line = titlesFile.readLine().trimmed();
QStringList parts = line.split("\t", QString::SkipEmptyParts);
if (parts.size() != 2)
break;
QString chapterTitle = parts[0];
QString fileName = parts[1];
QFile chapterFile(fileName);
chapterFile.open(QFile::ReadOnly);
QListWidgetItem *item = new QListWidgetItem(chapterTitle, headingList);
item->setData(Qt::DisplayRole, chapterTitle);
item->setData(Qt::UserRole, chapterFile.readAll());
item->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);
chapterFile.close();
chapter++;
} while (titlesFile.isOpen());
titlesFile.close();
}
void MainWindow::setupDockWindow()
{
contentsWindow = new QDockWidget(tr("Table of Contents"), this);
contentsWindow->setAllowedAreas(Qt::LeftDockWidgetArea
| Qt::RightDockWidgetArea);
addDockWidget(Qt::LeftDockWidgetArea, contentsWindow);
headingList = new QListWidget(contentsWindow);
contentsWindow->setWidget(headingList);
}
void MainWindow::setupMenus()
{
QAction *exitAct = new QAction(tr("E&xit"), this);
exitAct->setShortcut(tr("Ctrl+Q"));
exitAct->setStatusTip(tr("Exit the application"));
connect(exitAct, SIGNAL(triggered()), qApp, SLOT(closeAllWindows()));
QMenu *fileMenu = menuBar()->addMenu(tr("&File"));
fileMenu->addAction(exitAct);
}
void MainWindow::updateText(QListWidgetItem *item)
{
QString text = item->data(Qt::UserRole).toString();
textBrowser->setHtml(text);
}

#include <QApplication>
#include "mainwindow.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QMainWindow *window = new MainWindow;
window->show();
window->resize(640, 480);
return app.exec();
}

</source>

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