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Diffstat (limited to 'tools/shared/findwidget/texteditfindwidget.cpp')
| -rw-r--r-- | tools/shared/findwidget/texteditfindwidget.cpp | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/tools/shared/findwidget/texteditfindwidget.cpp b/tools/shared/findwidget/texteditfindwidget.cpp new file mode 100644 index 0000000..73100f5 --- /dev/null +++ b/tools/shared/findwidget/texteditfindwidget.cpp @@ -0,0 +1,169 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the tools applications of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, 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 are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +/*! \class TextEditFindWidget + + \brief A search bar that is commonly added below the searchable text. + + \internal + + This widget implements a search bar which becomes visible when the user + wants to start searching. It is a modern replacement for the commonly used + search dialog. It is usually placed below a QTextEdit using a QVBoxLayout. + + The QTextEdit instance will need to be associated with this class using + setTextEdit(). + + The search is incremental and can be set to case sensitive or whole words + using buttons available on the search bar. + + \sa QTextEdit + */ + +#include "texteditfindwidget.h" + +#include <QtGui/QCheckBox> +#include <QtGui/QTextCursor> +#include <QtGui/QTextEdit> + +QT_BEGIN_NAMESPACE + +/*! + Constructs a TextEditFindWidget. + + \a flags is passed to the AbstractFindWidget constructor. + \a parent is passed to the QWidget constructor. + */ +TextEditFindWidget::TextEditFindWidget(FindFlags flags, QWidget *parent) + : AbstractFindWidget(flags, parent) + , m_textEdit(0) +{ +} + +/*! + Associates a QTextEdit with this find widget. Searches done using this find + widget will then apply to the given QTextEdit. + + An event filter is set on the QTextEdit which intercepts the ESC key while + the find widget is active, and uses it to deactivate the find widget. + + If the find widget is already associated with a QTextEdit, the event filter + is removed from this QTextEdit first. + + \a textEdit may be NULL. + */ +void TextEditFindWidget::setTextEdit(QTextEdit *textEdit) +{ + if (m_textEdit) + m_textEdit->removeEventFilter(this); + + m_textEdit = textEdit; + + if (m_textEdit) + m_textEdit->installEventFilter(this); +} + +/*! + \reimp + */ +void TextEditFindWidget::deactivate() +{ + // Pass focus to the text edit + if (m_textEdit) + m_textEdit->setFocus(); + + AbstractFindWidget::deactivate(); +} + +/*! + \reimp + */ +void TextEditFindWidget::find(const QString &ttf, bool skipCurrent, bool backward, bool *found, bool *wrapped) +{ + if (!m_textEdit) + return; + + QTextCursor cursor = m_textEdit->textCursor(); + QTextDocument *doc = m_textEdit->document(); + + if (!doc || cursor.isNull()) + return; + + if (cursor.hasSelection()) + cursor.setPosition((skipCurrent && !backward) ? cursor.position() : cursor.anchor()); + + *found = true; + QTextCursor newCursor = cursor; + + if (!ttf.isEmpty()) { + QTextDocument::FindFlags options; + + if (backward) + options |= QTextDocument::FindBackward; + + if (caseSensitive()) + options |= QTextDocument::FindCaseSensitively; + + if (wholeWords()) + options |= QTextDocument::FindWholeWords; + + newCursor = doc->find(ttf, cursor, options); + if (newCursor.isNull()) { + QTextCursor ac(doc); + ac.movePosition(options & QTextDocument::FindBackward + ? QTextCursor::End : QTextCursor::Start); + newCursor = doc->find(ttf, ac, options); + if (newCursor.isNull()) { + *found = false; + newCursor = cursor; + } else { + *wrapped = true; + } + } + } + + if (!isVisible()) + show(); + + m_textEdit->setTextCursor(newCursor); +} + +QT_END_NAMESPACE |