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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Linguist 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 http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#include "messageeditorwidgets.h"
#include "messagehighlighter.h"
#include <QAbstractTextDocumentLayout>
#include <QAction>
#include <QApplication>
#include <QClipboard>
#include <QDebug>
#include <QLayout>
#include <QMenu>
#include <QPainter>
#include <QScrollArea>
#include <QTextBlock>
#include <QTextDocumentFragment>
#include <QVBoxLayout>
QT_BEGIN_NAMESPACE
ExpandingTextEdit::ExpandingTextEdit(QWidget *parent)
: QTextEdit(parent)
{
setSizePolicy(QSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Expanding));
setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
QAbstractTextDocumentLayout *docLayout = document()->documentLayout();
connect(docLayout, SIGNAL(documentSizeChanged(QSizeF)), SLOT(updateHeight(QSizeF)));
connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(reallyEnsureCursorVisible()));
m_minimumHeight = qRound(docLayout->documentSize().height()) + frameWidth() * 2;
}
void ExpandingTextEdit::updateHeight(const QSizeF &documentSize)
{
m_minimumHeight = qRound(documentSize.height()) + frameWidth() * 2;
updateGeometry();
}
QSize ExpandingTextEdit::sizeHint() const
{
return QSize(100, m_minimumHeight);
}
QSize ExpandingTextEdit::minimumSizeHint() const
{
return QSize(100, m_minimumHeight);
}
void ExpandingTextEdit::reallyEnsureCursorVisible()
{
QObject *ancestor = parent();
while (ancestor) {
QScrollArea *scrollArea = qobject_cast<QScrollArea*>(ancestor);
if (scrollArea &&
(scrollArea->verticalScrollBarPolicy() != Qt::ScrollBarAlwaysOff &&
scrollArea->horizontalScrollBarPolicy() != Qt::ScrollBarAlwaysOff)) {
const QRect &r = cursorRect();
const QPoint &c = mapTo(scrollArea->widget(), r.center());
scrollArea->ensureVisible(c.x(), c.y());
break;
}
ancestor = ancestor->parent();
}
}
FormatTextEdit::FormatTextEdit(QWidget *parent)
: ExpandingTextEdit(parent)
{
setLineWrapMode(QTextEdit::WidgetWidth);
setAcceptRichText(false);
QTextOption option = document()->defaultTextOption();
option.setFlags(option.flags()
| QTextOption::ShowLineAndParagraphSeparators
| QTextOption::ShowTabsAndSpaces);
document()->setDefaultTextOption(option);
// Do not set different background if disabled
QPalette p = palette();
p.setColor(QPalette::Disabled, QPalette::Base, p.color(QPalette::Active, QPalette::Base));
setPalette(p);
setEditable(true);
m_highlighter = new MessageHighlighter(this);
}
void FormatTextEdit::setEditable(bool editable)
{
// save default frame style
static int framed = frameStyle();
static Qt::FocusPolicy defaultFocus = focusPolicy();
if (editable) {
setFrameStyle(framed);
setFocusPolicy(defaultFocus);
} else {
setFrameStyle(QFrame::NoFrame | QFrame::Plain);
setFocusPolicy(Qt::NoFocus);
}
setReadOnly(!editable);
}
void FormatTextEdit::setPlainText(const QString &text, bool userAction)
{
bool oldBlockState = false;
if (!userAction) {
// Prevent contentsChanged signal
oldBlockState = document()->blockSignals(true);
document()->setUndoRedoEnabled(false);
ExpandingTextEdit::setPlainText(text);
// highlighter is out of sync because of blocked signals
m_highlighter->rehighlight();
document()->setUndoRedoEnabled(true);
document()->blockSignals(oldBlockState);
} else {
ExpandingTextEdit::setPlainText(text);
}
}
FormWidget::FormWidget(const QString &label, bool isEditable, QWidget *parent)
: QWidget(parent),
m_hideWhenEmpty(false)
{
QVBoxLayout *layout = new QVBoxLayout;
layout->setMargin(0);
m_label = new QLabel(this);
m_label->setText(label);
layout->addWidget(m_label);
m_editor = new FormatTextEdit(this);
m_editor->setEditable(isEditable);
//m_textEdit->setWhatsThis(tr("This area shows text from an auxillary translation."));
layout->addWidget(m_editor);
setLayout(layout);
connect(m_editor->document(), SIGNAL(contentsChanged()), SIGNAL(textChanged()));
connect(m_editor, SIGNAL(selectionChanged()), SIGNAL(selectionChanged()));
connect(m_editor, SIGNAL(cursorPositionChanged()), SIGNAL(cursorPositionChanged()));
}
void FormWidget::setTranslation(const QString &text, bool userAction)
{
m_editor->setPlainText(text, userAction);
if (m_hideWhenEmpty)
setHidden(text.isEmpty());
}
void FormWidget::setEditingEnabled(bool enable)
{
// Use read-only state so that the text can still be copied
m_editor->setReadOnly(!enable);
m_label->setEnabled(enable);
}
QT_END_NAMESPACE
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