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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt3Support module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "q3frame.h"
#include "qevent.h"
#include "qpainter.h"
QT_BEGIN_NAMESPACE
/*! \class Q3Frame
\compat
*/
/*!
Creates a new frame with the given \a parent, object \a name, and
with widget flags \a f.
*/
Q3Frame::Q3Frame(QWidget* parent, const char* name, Qt::WindowFlags f)
:QFrame(parent, f), marg(0)
{
if (name)
setObjectName(QLatin1String(name));
setAttribute(Qt::WA_LayoutOnEntireRect);
}
/*!
Destructs the frame.
*/
Q3Frame::~Q3Frame()
{
}
/*!
Paints the frame (or part of the frame) that's necessary,
depending on the \a event.
*/
void Q3Frame::paintEvent(QPaintEvent * event)
{
QPainter paint(this);
if (!contentsRect().contains(event->rect())) {
paint.save();
paint.setClipRegion(event->region().intersected(frameRect()));
drawFrame(&paint);
paint.restore();
}
if (event->rect().intersects(contentsRect())) {
paint.setClipRegion(event->region().intersected(contentsRect()));
drawContents(&paint);
}
}
/*!
\fn void Q3Frame::drawContents(QPainter *painter)
Virtual function that draws the contents of the frame on the given
\a painter.
The QPainter is already open when you get it, and you must leave
it open. Painter \link QPainter::setWorldMatrix()
transformations\endlink are switched off on entry. If you
transform the painter, remember to take the frame into account and
\link QPainter::resetXForm() reset transformation\endlink before
returning.
This function is reimplemented by subclasses that draw something
inside the frame. It should only draw inside contentsRect(). The
default function does nothing.
\sa contentsRect(), QPainter::setClipRect()
*/
void Q3Frame::drawContents(QPainter *)
{
}
/*!
Draws the frame using the painter \a p and the current frame
attributes and color group. The rectangle inside the frame is not
affected.
This function is virtual, but in general you do not need to
reimplement it. If you do, note that the QPainter is already open
and must remain open.
\sa frameRect(), contentsRect(), drawContents(), frameStyle(), setPalette()
*/
void Q3Frame::drawFrame(QPainter *p)
{
QFrame::drawFrame(p);
}
/*!
\fn void Q3Frame::resizeEvent(QResizeEvent *event)
This just calls frameChanged(); it does not make use of the \a
event itself.
*/
void Q3Frame::resizeEvent(QResizeEvent *e)
{
if (e->size() == e->oldSize())
frameChanged();
}
/*!
Virtual function that is called when the frame style, line width
or mid-line width changes.
This function can be reimplemented by subclasses that need to know
when the frame attributes change.
*/
void Q3Frame::frameChanged()
{
}
/*!
\property Q3Frame::margin
\brief the width of the margin
The margin is the distance between the innermost pixel of the
frame and the outermost pixel of contentsRect(). It is included in
frameWidth().
The margin is filled according to backgroundMode().
The default value is 0.
\sa lineWidth(), frameWidth()
*/
void Q3Frame::setMargin(int w)
{
if (marg == w)
return;
marg = w;
update();
frameChanged();
}
/*!
\property Q3Frame::contentsRect
\brief the frame's contents rectangle (including the margins)
*/
QRect Q3Frame::contentsRect() const
{
QRect cr(QFrame::contentsRect());
cr.adjust(marg, marg, -marg, -marg);
return cr;
}
/*!
Returns the width of the frame (including the margin).
*/
int Q3Frame::frameWidth() const
{
return QFrame::frameWidth() + marg;
}
QT_END_NAMESPACE
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