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Added a new base class RSTextEdit with placeholder for Qt < 5.2

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git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@7792 b45a01b8-16f6-495d-af2f-9b41ad6348cc
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thunder2 2014-12-25 02:39:40 +00:00
parent e5f0e6fcc7
commit 6c3a6f161f
7 changed files with 124 additions and 8 deletions
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57
retroshare-gui/src/gui/common/RSTextEdit.cpp Normal file
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/****************************************************************
*
* RetroShare is distributed under the following license:
*
* Copyright (C) 2014, RetroShare Team
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
****************************************************************/
#include <QPainter>
#include "RSTextEdit.h"
RSTextEdit::RSTextEdit(QWidget *parent)
: QTextEdit(parent)
{
}
#if QT_VERSION < 0x050200
void RSTextEdit::setPlaceholderText(const QString &text)
{
mPlaceholderText = text;
viewport()->repaint();
}
void RSTextEdit::paintEvent(QPaintEvent *event)
{
QTextEdit::paintEvent(event);
if (!mPlaceholderText.isEmpty() && document()->isEmpty()) {
QWidget *vieportWidget = viewport();
QPainter painter(vieportWidget);
QPen pen = painter.pen();
QColor color = pen.color();
color.setAlpha(128);
pen.setColor(color);
painter.setPen(pen);
const int margin = int(document()->documentMargin());
painter.drawText(viewport()->rect().adjusted(margin, margin, -margin, -margin), Qt::AlignTop | Qt::TextWordWrap, mPlaceholderText);
}
}
#endif