1 /****************************************************************************

     2 **

     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the demonstration applications of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

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    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

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    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #include "textedit.h"

    43 

    44 #include <QAction>

    45 #include <QApplication>

    46 #include <QClipboard>

    47 #include <QColorDialog>

    48 #include <QComboBox>

    49 #include <QFontComboBox>

    50 #include <QFile>

    51 #include <QFileDialog>

    52 #include <QFileInfo>

    53 #include <QFontDatabase>

    54 #include <QMenu>

    55 #include <QMenuBar>

    56 #include <QPrintDialog>

    57 #include <QPrinter>

    58 #include <QTextCodec>

    59 #include <QTextEdit>

    60 #include <QToolBar>

    61 #include <QTextCursor>

    62 #include <QTextDocumentWriter>

    63 #include <QTextList>

    64 #include <QtDebug>

    65 #include <QCloseEvent>

    66 #include <QMessageBox>

    67 #include <QPrintPreviewDialog>

    68 

    69 #ifdef Q_WS_MAC

    70 const QString rsrcPath = ":/images/mac";

    71 #else

    72 const QString rsrcPath = ":/images/win";

    73 #endif

    74 

    75 TextEdit::TextEdit(QWidget *parent)

    76     : QMainWindow(parent)

    77 {

    78     setToolButtonStyle(Qt::ToolButtonFollowStyle);

    79     setupFileActions();

    80     setupEditActions();

    81     setupTextActions();

    82 

    83     {

    84         QMenu *helpMenu = new QMenu(tr("Help"), this);

    85         menuBar()->addMenu(helpMenu);

    86         helpMenu->addAction(tr("About"), this, SLOT(about()));

    87         helpMenu->addAction(tr("About &Qt"), qApp, SLOT(aboutQt()));

    88     }

    89 

    90     textEdit = new QTextEdit(this);

    91     connect(textEdit, SIGNAL(currentCharFormatChanged(QTextCharFormat)),

    92             this, SLOT(currentCharFormatChanged(QTextCharFormat)));

    93     connect(textEdit, SIGNAL(cursorPositionChanged()),

    94             this, SLOT(cursorPositionChanged()));

    95 

    96     setCentralWidget(textEdit);

    97     textEdit->setFocus();

    98     setCurrentFileName(QString());

    99 

   100     fontChanged(textEdit->font());

   101     colorChanged(textEdit->textColor());

   102     alignmentChanged(textEdit->alignment());

   103 

   104     connect(textEdit->document(), SIGNAL(modificationChanged(bool)),

   105             actionSave, SLOT(setEnabled(bool)));

   106     connect(textEdit->document(), SIGNAL(modificationChanged(bool)),

   107             this, SLOT(setWindowModified(bool)));

   108     connect(textEdit->document(), SIGNAL(undoAvailable(bool)),

   109             actionUndo, SLOT(setEnabled(bool)));

   110     connect(textEdit->document(), SIGNAL(redoAvailable(bool)),

   111             actionRedo, SLOT(setEnabled(bool)));

   112 

   113     setWindowModified(textEdit->document()->isModified());

   114     actionSave->setEnabled(textEdit->document()->isModified());

   115     actionUndo->setEnabled(textEdit->document()->isUndoAvailable());

   116     actionRedo->setEnabled(textEdit->document()->isRedoAvailable());

   117 

   118     connect(actionUndo, SIGNAL(triggered()), textEdit, SLOT(undo()));

   119     connect(actionRedo, SIGNAL(triggered()), textEdit, SLOT(redo()));

   120 

   121     actionCut->setEnabled(false);

   122     actionCopy->setEnabled(false);

   123 

   124     connect(actionCut, SIGNAL(triggered()), textEdit, SLOT(cut()));

   125     connect(actionCopy, SIGNAL(triggered()), textEdit, SLOT(copy()));

   126     connect(actionPaste, SIGNAL(triggered()), textEdit, SLOT(paste()));

   127 

   128     connect(textEdit, SIGNAL(copyAvailable(bool)), actionCut, SLOT(setEnabled(bool)));

   129     connect(textEdit, SIGNAL(copyAvailable(bool)), actionCopy, SLOT(setEnabled(bool)));

   130 

   131 #ifndef QT_NO_CLIPBOARD

   132     connect(QApplication::clipboard(), SIGNAL(dataChanged()), this, SLOT(clipboardDataChanged()));

   133 #endif

   134 

   135     QString initialFile = ":/example.html";

   136     const QStringList args = QCoreApplication::arguments();

   137     if (args.count() == 2)

   138         initialFile = args.at(1);

   139 

   140     if (!load(initialFile))

   141         fileNew();

   142 }

   143 

   144 void TextEdit::closeEvent(QCloseEvent *e)

   145 {

   146     if (maybeSave())

   147         e->accept();

   148     else

   149         e->ignore();

   150 }

   151 

   152 void TextEdit::setupFileActions()

   153 {

   154     QToolBar *tb = new QToolBar(this);

   155     tb->setWindowTitle(tr("File Actions"));

   156     addToolBar(tb);

   157 

   158     QMenu *menu = new QMenu(tr("&File"), this);

   159     menuBar()->addMenu(menu);

   160 

   161     QAction *a;

   162 

   163     QIcon newIcon = QIcon::fromTheme("document-new", QIcon(rsrcPath + "/filenew.png"));

   164     a = new QAction( newIcon, tr("&New"), this);

   165     a->setPriority(QAction::LowPriority);

   166     a->setShortcut(QKeySequence::New);

   167     connect(a, SIGNAL(triggered()), this, SLOT(fileNew()));

   168     tb->addAction(a);

   169     menu->addAction(a);

   170 

   171     a = new QAction(QIcon::fromTheme("document-open", QIcon(rsrcPath + "/fileopen.png")),

   172                     tr("&Open..."), this);

   173     a->setShortcut(QKeySequence::Open);

   174     connect(a, SIGNAL(triggered()), this, SLOT(fileOpen()));

   175     tb->addAction(a);

   176     menu->addAction(a);

   177 

   178     menu->addSeparator();

   179 

   180     actionSave = a = new QAction(QIcon::fromTheme("document-save", QIcon(rsrcPath + "/filesave.png")),

   181                                  tr("&Save"), this);

   182     a->setShortcut(QKeySequence::Save);

   183     connect(a, SIGNAL(triggered()), this, SLOT(fileSave()));

   184     a->setEnabled(false);

   185     tb->addAction(a);

   186     menu->addAction(a);

   187 

   188     a = new QAction(tr("Save &As..."), this);

   189     a->setPriority(QAction::LowPriority);

   190     connect(a, SIGNAL(triggered()), this, SLOT(fileSaveAs()));

   191     menu->addAction(a);

   192     menu->addSeparator();

   193 

   194 #ifndef QT_NO_PRINTER

   195     a = new QAction(QIcon::fromTheme("document-print", QIcon(rsrcPath + "/fileprint.png")),

   196                     tr("&Print..."), this);

   197     a->setPriority(QAction::LowPriority);    

   198     a->setShortcut(QKeySequence::Print);

   199     connect(a, SIGNAL(triggered()), this, SLOT(filePrint()));

   200     tb->addAction(a);

   201     menu->addAction(a);

   202 

   203     a = new QAction(QIcon::fromTheme("fileprint", QIcon(rsrcPath + "/fileprint.png")),

   204                     tr("Print Preview..."), this);

   205     connect(a, SIGNAL(triggered()), this, SLOT(filePrintPreview()));

   206     menu->addAction(a);

   207 

   208     a = new QAction(QIcon::fromTheme("exportpdf", QIcon(rsrcPath + "/exportpdf.png")),

   209     tr("&Export PDF..."), this);

   210     a->setPriority(QAction::LowPriority);

   211     a->setShortcut(Qt::CTRL + Qt::Key_D);

   212     connect(a, SIGNAL(triggered()), this, SLOT(filePrintPdf()));

   213     tb->addAction(a);

   214     menu->addAction(a);

   215 

   216     menu->addSeparator();

   217 #endif

   218 

   219     a = new QAction(tr("&Quit"), this);

   220     a->setShortcut(Qt::CTRL + Qt::Key_Q);

   221     connect(a, SIGNAL(triggered()), this, SLOT(close()));

   222     menu->addAction(a);

   223 }

   224 

   225 void TextEdit::setupEditActions()

   226 {

   227     QToolBar *tb = new QToolBar(this);

   228     tb->setWindowTitle(tr("Edit Actions"));

   229     addToolBar(tb);

   230     QMenu *menu = new QMenu(tr("&Edit"), this);

   231     menuBar()->addMenu(menu);

   232 

   233     QAction *a;

   234     a = actionUndo = new QAction(QIcon::fromTheme("edit-undo", QIcon(rsrcPath + "/editundo.png")),

   235                                               tr("&Undo"), this);

   236     a->setShortcut(QKeySequence::Undo);

   237     tb->addAction(a);

   238     menu->addAction(a);

   239     a = actionRedo = new QAction(QIcon::fromTheme("edit-redo", QIcon(rsrcPath + "/editredo.png")),

   240                                               tr("&Redo"), this);

   241     a->setPriority(QAction::LowPriority);

   242     a->setShortcut(QKeySequence::Redo);

   243     tb->addAction(a);

   244     menu->addAction(a);

   245     menu->addSeparator();

   246     a = actionCut = new QAction(QIcon::fromTheme("edit-cut", QIcon(rsrcPath + "/editcut.png")),

   247                                              tr("Cu&t"), this);

   248     a->setPriority(QAction::LowPriority);

   249     a->setShortcut(QKeySequence::Cut);

   250     tb->addAction(a);

   251     menu->addAction(a);

   252     a = actionCopy = new QAction(QIcon::fromTheme("edit-copy", QIcon(rsrcPath + "/editcopy.png")),

   253                                  tr("&Copy"), this);

   254     a->setPriority(QAction::LowPriority);

   255     a->setShortcut(QKeySequence::Copy);

   256     tb->addAction(a);

   257     menu->addAction(a);

   258     a = actionPaste = new QAction(QIcon::fromTheme("edit-paste", QIcon(rsrcPath + "/editpaste.png")),

   259                                   tr("&Paste"), this);

   260     a->setPriority(QAction::LowPriority);

   261     a->setShortcut(QKeySequence::Paste);

   262     tb->addAction(a);

   263     menu->addAction(a);

   264 #ifndef QT_NO_CLIPBOARD

   265     actionPaste->setEnabled(!QApplication::clipboard()->text().isEmpty());

   266 #endif

   267 }

   268 

   269 void TextEdit::setupTextActions()

   270 {

   271     QToolBar *tb = new QToolBar(this);

   272     tb->setWindowTitle(tr("Format Actions"));

   273     addToolBar(tb);

   274 

   275     QMenu *menu = new QMenu(tr("F&ormat"), this);

   276     menuBar()->addMenu(menu);

   277 

   278     actionTextBold = new QAction(QIcon::fromTheme("format-text-bold", QIcon(rsrcPath + "/textbold.png")),

   279                                  tr("&Bold"), this);

   280     actionTextBold->setShortcut(Qt::CTRL + Qt::Key_B);

   281     actionTextBold->setPriority(QAction::LowPriority);

   282 	QFont bold;

   283     bold.setBold(true);

   284     actionTextBold->setFont(bold);

   285     connect(actionTextBold, SIGNAL(triggered()), this, SLOT(textBold()));

   286     tb->addAction(actionTextBold);

   287     menu->addAction(actionTextBold);

   288     actionTextBold->setCheckable(true);

   289 

   290     actionTextItalic = new QAction(QIcon::fromTheme("format-text-italic", QIcon(rsrcPath + "/textitalic.png")),

   291                                    tr("&Italic"), this);

   292     actionTextItalic->setPriority(QAction::LowPriority);

   293     actionTextItalic->setShortcut(Qt::CTRL + Qt::Key_I);

   294     QFont italic;

   295     italic.setItalic(true);

   296     actionTextItalic->setFont(italic);

   297     connect(actionTextItalic, SIGNAL(triggered()), this, SLOT(textItalic()));

   298     tb->addAction(actionTextItalic);

   299     menu->addAction(actionTextItalic);

   300     actionTextItalic->setCheckable(true);

   301 

   302     actionTextUnderline = new QAction(QIcon::fromTheme("format-text-underline", QIcon(rsrcPath + "/textunder.png")),

   303                                       tr("&Underline"), this);

   304     actionTextUnderline->setShortcut(Qt::CTRL + Qt::Key_U);

   305     actionTextUnderline->setPriority(QAction::LowPriority);

   306     QFont underline;

   307     underline.setUnderline(true);

   308     actionTextUnderline->setFont(underline);

   309     connect(actionTextUnderline, SIGNAL(triggered()), this, SLOT(textUnderline()));

   310     tb->addAction(actionTextUnderline);

   311     menu->addAction(actionTextUnderline);

   312     actionTextUnderline->setCheckable(true);

   313 

   314     menu->addSeparator();

   315 

   316     QActionGroup *grp = new QActionGroup(this);

   317     connect(grp, SIGNAL(triggered(QAction*)), this, SLOT(textAlign(QAction*)));

   318 

   319     // Make sure the alignLeft  is always left of the alignRight

   320     if (QApplication::isLeftToRight()) {

   321         actionAlignLeft = new QAction(QIcon::fromTheme("format-justify-left", QIcon(rsrcPath + "/textleft.png")),

   322                                       tr("&Left"), grp);

   323         actionAlignCenter = new QAction(QIcon::fromTheme("format-justify-center", QIcon(rsrcPath + "/textcenter.png")), tr("C&enter"), grp);

   324         actionAlignRight = new QAction(QIcon::fromTheme("format-justify-right", QIcon(rsrcPath + "/textright.png")), tr("&Right"), grp);

   325     } else {

   326         actionAlignRight = new QAction(QIcon::fromTheme("format-justify-right", QIcon(rsrcPath + "/textright.png")), tr("&Right"), grp);

   327         actionAlignCenter = new QAction(QIcon::fromTheme("format-justify-center", QIcon(rsrcPath + "/textcenter.png")), tr("C&enter"), grp);

   328         actionAlignLeft = new QAction(QIcon::fromTheme("format-justify-left", QIcon(rsrcPath + "/textleft.png")), tr("&Left"), grp);

   329     }

   330     actionAlignJustify = new QAction(QIcon::fromTheme("format-justify-fill", QIcon(rsrcPath + "/textjustify.png")), tr("&Justify"), grp);

   331 

   332     actionAlignLeft->setShortcut(Qt::CTRL + Qt::Key_L);

   333     actionAlignLeft->setCheckable(true);

   334     actionAlignLeft->setPriority(QAction::LowPriority);

   335     actionAlignCenter->setShortcut(Qt::CTRL + Qt::Key_E);

   336     actionAlignCenter->setCheckable(true);

   337     actionAlignCenter->setPriority(QAction::LowPriority);

   338     actionAlignRight->setShortcut(Qt::CTRL + Qt::Key_R);

   339     actionAlignRight->setCheckable(true);

   340     actionAlignRight->setPriority(QAction::LowPriority);

   341     actionAlignJustify->setShortcut(Qt::CTRL + Qt::Key_J);

   342     actionAlignJustify->setCheckable(true);

   343     actionAlignJustify->setPriority(QAction::LowPriority);

   344 

   345     tb->addActions(grp->actions());

   346     menu->addActions(grp->actions());

   347 

   348     menu->addSeparator();

   349 

   350     QPixmap pix(16, 16);

   351     pix.fill(Qt::black);

   352     actionTextColor = new QAction(pix, tr("&Color..."), this);

   353     connect(actionTextColor, SIGNAL(triggered()), this, SLOT(textColor()));

   354     tb->addAction(actionTextColor);

   355     menu->addAction(actionTextColor);

   356 

   357 

   358     tb = new QToolBar(this);

   359     tb->setAllowedAreas(Qt::TopToolBarArea | Qt::BottomToolBarArea);

   360     tb->setWindowTitle(tr("Format Actions"));

   361     addToolBarBreak(Qt::TopToolBarArea);

   362     addToolBar(tb);

   363 

   364     comboStyle = new QComboBox(tb);

   365     tb->addWidget(comboStyle);

   366     comboStyle->addItem("Standard");

   367     comboStyle->addItem("Bullet List (Disc)");

   368     comboStyle->addItem("Bullet List (Circle)");

   369     comboStyle->addItem("Bullet List (Square)");

   370     comboStyle->addItem("Ordered List (Decimal)");

   371     comboStyle->addItem("Ordered List (Alpha lower)");

   372     comboStyle->addItem("Ordered List (Alpha upper)");

   373     comboStyle->addItem("Ordered List (Roman lower)");

   374     comboStyle->addItem("Ordered List (Roman upper)");

   375     connect(comboStyle, SIGNAL(activated(int)),

   376             this, SLOT(textStyle(int)));

   377 

   378     comboFont = new QFontComboBox(tb);

   379     tb->addWidget(comboFont);

   380     connect(comboFont, SIGNAL(activated(QString)),

   381             this, SLOT(textFamily(QString)));

   382 

   383     comboSize = new QComboBox(tb);

   384     comboSize->setObjectName("comboSize");

   385     tb->addWidget(comboSize);

   386     comboSize->setEditable(true);

   387 

   388     QFontDatabase db;

   389     foreach(int size, db.standardSizes())

   390         comboSize->addItem(QString::number(size));

   391 

   392     connect(comboSize, SIGNAL(activated(QString)),

   393             this, SLOT(textSize(QString)));

   394     comboSize->setCurrentIndex(comboSize->findText(QString::number(QApplication::font()

   395                                                                    .pointSize())));

   396 }

   397 

   398 bool TextEdit::load(const QString &f)

   399 {

   400     if (!QFile::exists(f))

   401         return false;

   402     QFile file(f);

   403     if (!file.open(QFile::ReadOnly))

   404         return false;

   405 

   406     QByteArray data = file.readAll();

   407     QTextCodec *codec = Qt::codecForHtml(data);

   408     QString str = codec->toUnicode(data);

   409     if (Qt::mightBeRichText(str)) {

   410         textEdit->setHtml(str);

   411     } else {

   412         str = QString::fromLocal8Bit(data);

   413         textEdit->setPlainText(str);

   414     }

   415 

   416     setCurrentFileName(f);

   417     return true;

   418 }

   419 

   420 bool TextEdit::maybeSave()

   421 {

   422     if (!textEdit->document()->isModified())

   423         return true;

   424     if (fileName.startsWith(QLatin1String(":/")))

   425         return true;

   426     QMessageBox::StandardButton ret;

   427     ret = QMessageBox::warning(this, tr("Application"),

   428                                tr("The document has been modified.\n"

   429                                   "Do you want to save your changes?"),

   430                                QMessageBox::Save | QMessageBox::Discard

   431                                | QMessageBox::Cancel);

   432     if (ret == QMessageBox::Save)

   433         return fileSave();

   434     else if (ret == QMessageBox::Cancel)

   435         return false;

   436     return true;

   437 }

   438 

   439 void TextEdit::setCurrentFileName(const QString &fileName)

   440 {

   441     this->fileName = fileName;

   442     textEdit->document()->setModified(false);

   443 

   444     QString shownName;

   445     if (fileName.isEmpty())

   446         shownName = "untitled.txt";

   447     else

   448         shownName = QFileInfo(fileName).fileName();

   449 

   450     setWindowTitle(tr("%1[*] - %2").arg(shownName).arg(tr("Rich Text")));

   451     setWindowModified(false);

   452 }

   453 

   454 void TextEdit::fileNew()

   455 {

   456     if (maybeSave()) {

   457         textEdit->clear();

   458         setCurrentFileName(QString());

   459     }

   460 }

   461 

   462 void TextEdit::fileOpen()

   463 {

   464     QString fn = QFileDialog::getOpenFileName(this, tr("Open File..."),

   465                                               QString(), tr("HTML-Files (*.htm *.html);;All Files (*)"));

   466     if (!fn.isEmpty())

   467         load(fn);

   468 }

   469 

   470 bool TextEdit::fileSave()

   471 {

   472     if (fileName.isEmpty())

   473         return fileSaveAs();

   474 

   475     QTextDocumentWriter writer(fileName);

   476     bool success = writer.write(textEdit->document());

   477     if (success)

   478         textEdit->document()->setModified(false);

   479     return success;

   480 }

   481 

   482 bool TextEdit::fileSaveAs()

   483 {

   484     QString fn = QFileDialog::getSaveFileName(this, tr("Save as..."),

   485                                               QString(), tr("ODF files (*.odt);;HTML-Files (*.htm *.html);;All Files (*)"));

   486     if (fn.isEmpty())

   487         return false;

   488     if (! (fn.endsWith(".odt", Qt::CaseInsensitive) || fn.endsWith(".htm", Qt::CaseInsensitive) || fn.endsWith(".html", Qt::CaseInsensitive)) )

   489         fn += ".odt"; // default

   490     setCurrentFileName(fn);

   491     return fileSave();

   492 }

   493 

   494 void TextEdit::filePrint()

   495 {

   496 #ifndef QT_NO_PRINTER

   497     QPrinter printer(QPrinter::HighResolution);

   498     QPrintDialog *dlg = new QPrintDialog(&printer, this);

   499     if (textEdit->textCursor().hasSelection())

   500         dlg->addEnabledOption(QAbstractPrintDialog::PrintSelection);

   501     dlg->setWindowTitle(tr("Print Document"));

   502     if (dlg->exec() == QDialog::Accepted) {

   503         textEdit->print(&printer);

   504     }

   505     delete dlg;

   506 #endif

   507 }

   508 

   509 void TextEdit::filePrintPreview()

   510 {

   511 #ifndef QT_NO_PRINTER

   512     QPrinter printer(QPrinter::HighResolution);

   513     QPrintPreviewDialog preview(&printer, this);

   514     connect(&preview, SIGNAL(paintRequested(QPrinter*)), SLOT(printPreview(QPrinter*)));

   515     preview.exec();

   516 #endif

   517 }

   518 

   519 void TextEdit::printPreview(QPrinter *printer)

   520 {

   521 #ifdef QT_NO_PRINTER

   522     Q_UNUSED(printer);

   523 #else

   524     textEdit->print(printer);

   525 #endif

   526 }

   527 

   528 

   529 void TextEdit::filePrintPdf()

   530 {

   531 #ifndef QT_NO_PRINTER

   532 //! [0]

   533     QString fileName = QFileDialog::getSaveFileName(this, "Export PDF",

   534                                                     QString(), "*.pdf");

   535     if (!fileName.isEmpty()) {

   536         if (QFileInfo(fileName).suffix().isEmpty())

   537             fileName.append(".pdf");

   538         QPrinter printer(QPrinter::HighResolution);

   539         printer.setOutputFormat(QPrinter::PdfFormat);

   540         printer.setOutputFileName(fileName);

   541         textEdit->document()->print(&printer);

   542     }

   543 //! [0]

   544 #endif

   545 }

   546 

   547 void TextEdit::textBold()

   548 {

   549     QTextCharFormat fmt;

   550     fmt.setFontWeight(actionTextBold->isChecked() ? QFont::Bold : QFont::Normal);

   551     mergeFormatOnWordOrSelection(fmt);

   552 }

   553 

   554 void TextEdit::textUnderline()

   555 {

   556     QTextCharFormat fmt;

   557     fmt.setFontUnderline(actionTextUnderline->isChecked());

   558     mergeFormatOnWordOrSelection(fmt);

   559 }

   560 

   561 void TextEdit::textItalic()

   562 {

   563     QTextCharFormat fmt;

   564     fmt.setFontItalic(actionTextItalic->isChecked());

   565     mergeFormatOnWordOrSelection(fmt);

   566 }

   567 

   568 void TextEdit::textFamily(const QString &f)

   569 {

   570     QTextCharFormat fmt;

   571     fmt.setFontFamily(f);

   572     mergeFormatOnWordOrSelection(fmt);

   573 }

   574 

   575 void TextEdit::textSize(const QString &p)

   576 {

   577     qreal pointSize = p.toFloat();

   578     if (p.toFloat() > 0) {

   579         QTextCharFormat fmt;

   580         fmt.setFontPointSize(pointSize);

   581         mergeFormatOnWordOrSelection(fmt);

   582     }

   583 }

   584 

   585 void TextEdit::textStyle(int styleIndex)

   586 {

   587     QTextCursor cursor = textEdit->textCursor();

   588 

   589     if (styleIndex != 0) {

   590         QTextListFormat::Style style = QTextListFormat::ListDisc;

   591 

   592         switch (styleIndex) {

   593             default:

   594             case 1:

   595                 style = QTextListFormat::ListDisc;

   596                 break;

   597             case 2:

   598                 style = QTextListFormat::ListCircle;

   599                 break;

   600             case 3:

   601                 style = QTextListFormat::ListSquare;

   602                 break;

   603             case 4:

   604                 style = QTextListFormat::ListDecimal;

   605                 break;

   606             case 5:

   607                 style = QTextListFormat::ListLowerAlpha;

   608                 break;

   609             case 6:

   610                 style = QTextListFormat::ListUpperAlpha;

   611                 break;

   612             case 7:

   613                 style = QTextListFormat::ListLowerRoman;

   614                 break;

   615             case 8:

   616                 style = QTextListFormat::ListUpperRoman;

   617                 break;

   618         }

   619 

   620         cursor.beginEditBlock();

   621 

   622         QTextBlockFormat blockFmt = cursor.blockFormat();

   623 

   624         QTextListFormat listFmt;

   625 

   626         if (cursor.currentList()) {

   627             listFmt = cursor.currentList()->format();

   628         } else {

   629             listFmt.setIndent(blockFmt.indent() + 1);

   630             blockFmt.setIndent(0);

   631             cursor.setBlockFormat(blockFmt);

   632         }

   633 

   634         listFmt.setStyle(style);

   635 

   636         cursor.createList(listFmt);

   637 

   638         cursor.endEditBlock();

   639     } else {

   640         // ####

   641         QTextBlockFormat bfmt;

   642         bfmt.setObjectIndex(-1);

   643         cursor.mergeBlockFormat(bfmt);

   644     }

   645 }

   646 

   647 void TextEdit::textColor()

   648 {

   649     QColor col = QColorDialog::getColor(textEdit->textColor(), this);

   650     if (!col.isValid())

   651         return;

   652     QTextCharFormat fmt;

   653     fmt.setForeground(col);

   654     mergeFormatOnWordOrSelection(fmt);

   655     colorChanged(col);

   656 }

   657 

   658 void TextEdit::textAlign(QAction *a)

   659 {

   660     if (a == actionAlignLeft)

   661         textEdit->setAlignment(Qt::AlignLeft | Qt::AlignAbsolute);

   662     else if (a == actionAlignCenter)

   663         textEdit->setAlignment(Qt::AlignHCenter);

   664     else if (a == actionAlignRight)

   665         textEdit->setAlignment(Qt::AlignRight | Qt::AlignAbsolute);

   666     else if (a == actionAlignJustify)

   667         textEdit->setAlignment(Qt::AlignJustify);

   668 }

   669 

   670 void TextEdit::currentCharFormatChanged(const QTextCharFormat &format)

   671 {

   672     fontChanged(format.font());

   673     colorChanged(format.foreground().color());

   674 }

   675 

   676 void TextEdit::cursorPositionChanged()

   677 {

   678     alignmentChanged(textEdit->alignment());

   679 }

   680 

   681 void TextEdit::clipboardDataChanged()

   682 {

   683 #ifndef QT_NO_CLIPBOARD

   684     actionPaste->setEnabled(!QApplication::clipboard()->text().isEmpty());

   685 #endif

   686 }

   687 

   688 void TextEdit::about()

   689 {

   690     QMessageBox::about(this, tr("About"), tr("This example demonstrates Qt's "

   691         "rich text editing facilities in action, providing an example "

   692         "document for you to experiment with."));

   693 }

   694 

   695 void TextEdit::mergeFormatOnWordOrSelection(const QTextCharFormat &format)

   696 {

   697     QTextCursor cursor = textEdit->textCursor();

   698     if (!cursor.hasSelection())

   699         cursor.select(QTextCursor::WordUnderCursor);

   700     cursor.mergeCharFormat(format);

   701     textEdit->mergeCurrentCharFormat(format);

   702 }

   703 

   704 void TextEdit::fontChanged(const QFont &f)

   705 {

   706     comboFont->setCurrentIndex(comboFont->findText(QFontInfo(f).family()));

   707     comboSize->setCurrentIndex(comboSize->findText(QString::number(f.pointSize())));

   708     actionTextBold->setChecked(f.bold());

   709     actionTextItalic->setChecked(f.italic());

   710     actionTextUnderline->setChecked(f.underline());

   711 }

   712 

   713 void TextEdit::colorChanged(const QColor &c)

   714 {

   715     QPixmap pix(16, 16);

   716     pix.fill(c);

   717     actionTextColor->setIcon(pix);

   718 }

   719 

   720 void TextEdit::alignmentChanged(Qt::Alignment a)

   721 {

   722     if (a & Qt::AlignLeft) {

   723         actionAlignLeft->setChecked(true);

   724     } else if (a & Qt::AlignHCenter) {

   725         actionAlignCenter->setChecked(true);

   726     } else if (a & Qt::AlignRight) {

   727         actionAlignRight->setChecked(true);

   728     } else if (a & Qt::AlignJustify) {

   729         actionAlignJustify->setChecked(true);

   730     }

   731 }

   732