1 /****************************************************************************

     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the Qt Designer of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

    27 **

    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

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    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #include "previewframe.h"

    43 #include "previewwidget.h"

    44 

    45 #include <QtCore/QCoreApplication>

    46 #include <QtCore/QDebug>

    47 #include <QtGui/QPainter>

    48 #include <QtGui/QMdiArea>

    49 #include <QtGui/QMdiSubWindow>

    50 #include <QtGui/QPaintEvent>

    51 

    52 QT_BEGIN_NAMESPACE

    53 

    54 namespace qdesigner_internal {

    55 

    56     class PreviewMdiArea: public QMdiArea {

    57     public:

    58         PreviewMdiArea(QWidget *parent = 0) : QMdiArea(parent) {}

    59     protected:

    60         bool viewportEvent ( QEvent * event );

    61     };

    62 

    63     bool PreviewMdiArea::viewportEvent (QEvent * event) {

    64         if (event->type() != QEvent::Paint)

    65             return QMdiArea::viewportEvent (event);

    66         QWidget *paintWidget = viewport();

    67         QPainter p(paintWidget);

    68         p.fillRect(rect(), paintWidget->palette().color(backgroundRole()).dark());

    69         p.setPen(QPen(Qt::white));

    70         //: Palette editor background

    71         p.drawText(0, height() / 2,  width(), height(), Qt::AlignHCenter,

    72                    QCoreApplication::translate("qdesigner_internal::PreviewMdiArea", "The moose in the noose\nate the goose who was loose."));

    73         return true;

    74     }

    75 

    76 PreviewFrame::PreviewFrame(QWidget *parent) :

    77     QFrame(parent),

    78     m_mdiArea(new PreviewMdiArea(this))

    79 {

    80     m_mdiArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);

    81     m_mdiArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);

    82     setFrameStyle(QFrame::StyledPanel | QFrame::Sunken);

    83     setLineWidth(1);

    84 

    85     QVBoxLayout *vbox = new QVBoxLayout(this);

    86     vbox->setMargin(0);

    87     vbox->addWidget(m_mdiArea);

    88 

    89     setMinimumSize(ensureMdiSubWindow()->minimumSizeHint());

    90 }

    91 

    92 void PreviewFrame::setPreviewPalette(const QPalette &pal)

    93 {

    94     ensureMdiSubWindow()->widget()->setPalette(pal);

    95 }

    96 

    97 void PreviewFrame::setSubWindowActive(bool active)

    98 {

    99     m_mdiArea->setActiveSubWindow (active ? ensureMdiSubWindow() : static_cast<QMdiSubWindow *>(0));

   100 }

   101 

   102 QMdiSubWindow *PreviewFrame::ensureMdiSubWindow()

   103 {

   104     if (!m_mdiSubWindow) {

   105         PreviewWidget *previewWidget = new PreviewWidget(m_mdiArea);

   106         m_mdiSubWindow = m_mdiArea->addSubWindow(previewWidget, Qt::WindowTitleHint | Qt::WindowMinimizeButtonHint | Qt::WindowMaximizeButtonHint);

   107         m_mdiSubWindow->move(10,10);

   108         m_mdiSubWindow->showMaximized();

   109     }

   110 

   111     const Qt::WindowStates state = m_mdiSubWindow->windowState();

   112     if (state & Qt::WindowMinimized)

   113         m_mdiSubWindow->setWindowState(state & ~Qt::WindowMinimized);

   114 

   115     return m_mdiSubWindow;

   116 }

   117 }

   118 

   119 QT_END_NAMESPACE