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     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 documentation 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

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    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.

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    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

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

    41 

    42 #include <QtGui>

    43 

    44 #include "mainwindow.h"

    45 

    46 MainWindow::MainWindow()

    47 {

    48     QMenu *fileMenu = new QMenu(tr("&File"));

    49 

    50     fileMenu->addAction(tr("E&xit"), this, SLOT(close()),

    51         QKeySequence(tr("Ctrl+Q", "File|Exit")));

    52 

    53     QMenu *actionsMenu = new QMenu(tr("&Actions"));

    54     actionsMenu->addAction(tr("&Highlight List Items"),

    55                         this, SLOT(highlightListItems()));

    56     actionsMenu->addAction(tr("&Show Current List"), this, SLOT(showList()));

    57 

    58     QMenu *insertMenu = new QMenu(tr("&Insert"));

    59 

    60     insertMenu->addAction(tr("&List"), this, SLOT(insertList()),

    61         QKeySequence(tr("Ctrl+L", "Insert|List")));

    62 

    63     menuBar()->addMenu(fileMenu);

    64     menuBar()->addMenu(insertMenu);

    65     menuBar()->addMenu(actionsMenu);

    66 

    67     editor = new QTextEdit(this);

    68     document = new QTextDocument(this);

    69     editor->setDocument(document);

    70 

    71     setCentralWidget(editor);

    72     setWindowTitle(tr("Text Document List Items"));

    73 }

    74 

    75 void MainWindow::highlightListItems()

    76 {

    77     QTextCursor cursor = editor->textCursor();

    78     QTextList *list = cursor.currentList();

    79 

    80     if (!list)

    81         return;

    82 

    83     cursor.beginEditBlock();

    84 //! [0]

    85     for (int index = 0; index < list->count(); ++index) {

    86         QTextBlock listItem = list->item(index);

    87 //! [0]

    88         QTextBlockFormat newBlockFormat = listItem.blockFormat();

    89         newBlockFormat.setBackground(Qt::lightGray);

    90         QTextCursor itemCursor = cursor;

    91         itemCursor.setPosition(listItem.position());

    92         //itemCursor.movePosition(QTextCursor::StartOfBlock);

    93         itemCursor.movePosition(QTextCursor::EndOfBlock,

    94                                 QTextCursor::KeepAnchor);

    95         itemCursor.setBlockFormat(newBlockFormat);

    96         /*

    97 //! [1]

    98         processListItem(listItem);

    99 //! [1]

   100         */

   101 //! [2]

   102     }

   103 //! [2]

   104     cursor.endEditBlock();

   105 }

   106 

   107 void MainWindow::showList()

   108 {

   109     QTextCursor cursor = editor->textCursor();

   110     QTextFrame *frame = cursor.currentFrame();

   111 

   112     if (!frame)

   113         return;

   114 

   115     QTreeWidget *treeWidget = new QTreeWidget;

   116     treeWidget->setColumnCount(1);

   117     QStringList headerLabels;

   118     headerLabels << tr("Lists");

   119     treeWidget->setHeaderLabels(headerLabels);

   120 

   121     QTreeWidgetItem *parentItem = 0;

   122     QTreeWidgetItem *item;

   123     QTreeWidgetItem *lastItem = 0;

   124     parentItems.clear();

   125     previousItems.clear();

   126 

   127 //! [3]

   128     QTextFrame::iterator it;

   129     for (it = frame->begin(); !(it.atEnd()); ++it) {

   130 

   131         QTextBlock block = it.currentBlock();

   132 

   133         if (block.isValid()) {

   134 

   135             QTextList *list = block.textList();

   136 

   137             if (list) {

   138                 int index = list->itemNumber(block);

   139 //! [3]

   140                 if (index == 0) {

   141                     parentItems.append(parentItem);

   142                     previousItems.append(lastItem);

   143                     listStructures.append(list);

   144                     parentItem = lastItem;

   145                     lastItem = 0;

   146 

   147                     if (parentItem != 0)

   148                         item = new QTreeWidgetItem(parentItem, lastItem);

   149                     else

   150                         item = new QTreeWidgetItem(treeWidget, lastItem);

   151 

   152                 } else {

   153 

   154                     while (parentItem != 0 && listStructures.last() != list) {

   155                         listStructures.pop_back();

   156                         parentItem = parentItems.takeLast();

   157                         lastItem = previousItems.takeLast();

   158                     }

   159                     if (parentItem != 0)

   160                         item = new QTreeWidgetItem(parentItem, lastItem);

   161                     else

   162                         item = new QTreeWidgetItem(treeWidget, lastItem);

   163                 }

   164                 item->setText(0, block.text());

   165                 lastItem = item;

   166                 /*

   167 //! [4]

   168                 processListItem(list, index);

   169 //! [4]

   170                 */

   171 //! [5]

   172             }

   173 //! [5] //! [6]

   174         }

   175 //! [6] //! [7]

   176     }

   177 //! [7]

   178 

   179     treeWidget->setWindowTitle(tr("List Contents"));

   180     treeWidget->show();

   181 }

   182 

   183 void MainWindow::insertList()

   184 {

   185     QTextCursor cursor = editor->textCursor();

   186     cursor.beginEditBlock();

   187 

   188     QTextList *list = cursor.currentList();

   189     QTextListFormat listFormat;

   190     if (list)

   191         listFormat = list->format();

   192 

   193     listFormat.setStyle(QTextListFormat::ListDisc);

   194     listFormat.setIndent(listFormat.indent() + 1);

   195     cursor.insertList(listFormat);

   196 

   197     cursor.endEditBlock();

   198 }