qt_demoe/third/designer/lib/shared/qdesigner_widget.cpp

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C++

/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Designer of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** 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
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**
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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** 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
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** packaging of this file. Please review the following information to
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**
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#include "qdesigner_widget_p.h"
#include "formwindowbase_p.h"
#include "grid_p.h"
#include <QtDesigner/QDesignerFormWindowInterface>
#include <QtGui/QPainter>
#include <QtGui/QStyle>
#include <QtGui/QStyleOption>
#include <QtGui/qevent.h>
QT_BEGIN_NAMESPACE
/* QDesignerDialog / QDesignerWidget are used to paint a grid on QDialog and QWidget main containers
* and container extension pages.
* The paint routines work as follows:
* We need to clean the background here (to make the parent grid disappear in case we are a container page
* and to make palette background settings take effect),
* which would normally break style sheets with background settings.
* So, we manually make the style paint after cleaning. On top comes the grid
* In addition, this code works around
* the QStyleSheetStyle setting Qt::WA_StyledBackground to false for subclasses of QWidget.
*/
QDesignerDialog::QDesignerDialog(QDesignerFormWindowInterface *fw, QWidget *parent) :
QDialog(parent),
m_formWindow(qobject_cast<qdesigner_internal::FormWindowBase*>(fw))
{
}
void QDesignerDialog::paintEvent(QPaintEvent *e)
{
QPainter p(this);
QStyleOption opt;
opt.initFrom(this);
p.fillRect(e->rect(), palette().brush(backgroundRole()));
style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
if (m_formWindow && m_formWindow->gridVisible())
m_formWindow->designerGrid().paint(p, this, e);
}
QDesignerWidget::QDesignerWidget(QDesignerFormWindowInterface* formWindow, QWidget *parent) :
QWidget(parent),
m_formWindow(qobject_cast<qdesigner_internal::FormWindowBase*>(formWindow))
{
}
QDesignerWidget::~QDesignerWidget()
{
}
QDesignerFormWindowInterface* QDesignerWidget::formWindow() const
{
return m_formWindow;
}
void QDesignerWidget::paintEvent(QPaintEvent *e)
{
QPainter p(this);
QStyleOption opt;
opt.initFrom(this);
p.fillRect(e->rect(), palette().brush(backgroundRole()));
style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
if (m_formWindow && m_formWindow->gridVisible())
m_formWindow->designerGrid().paint(p, this, e);
}
QT_END_NAMESPACE