demos/qtdemo/dockitem.cpp
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     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 demonstration applications 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 **
       
    31 **
       
    32 **
       
    33 **
       
    34 **
       
    35 **
       
    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 #include "dockitem.h"
       
    43 #include "colors.h"
       
    44 
       
    45 DockItem::DockItem(ORIENTATION orien, qreal x, qreal y, qreal width, qreal length, QGraphicsScene *scene, QGraphicsItem *parent)
       
    46     : DemoItem(scene, parent)
       
    47 {
       
    48     this->orientation = orien;
       
    49     this->width = width;
       
    50     this->length = length;
       
    51     this->setPos(x, y);
       
    52     this->setZValue(40);
       
    53     this->setupPixmap();
       
    54 }
       
    55 
       
    56 void DockItem::setupPixmap()
       
    57 {
       
    58     this->pixmap = new QPixmap(int(this->boundingRect().width()), int(this->boundingRect().height()));
       
    59     this->pixmap->fill(QColor(0, 0, 0, 0));
       
    60     QPainter painter(this->pixmap);
       
    61     // create brush:
       
    62     QColor background = Colors::sceneBg1;
       
    63     QLinearGradient brush(0, 0, 0, this->boundingRect().height());
       
    64     brush.setSpread(QGradient::PadSpread);
       
    65 
       
    66     if (this->orientation == DOWN){
       
    67         brush.setColorAt(0.0, background);
       
    68         brush.setColorAt(0.2, background);
       
    69         background.setAlpha(0);
       
    70         brush.setColorAt(1.0, background);
       
    71     }
       
    72     else
       
    73         if (this->orientation == UP){
       
    74         brush.setColorAt(1.0, background);
       
    75         brush.setColorAt(0.8, background);
       
    76         background.setAlpha(0);
       
    77         brush.setColorAt(0.0, background);
       
    78     }
       
    79     else
       
    80         qWarning("DockItem doesn't support the orientation given!");
       
    81 
       
    82     painter.fillRect(0, 0, int(this->boundingRect().width()), int(this->boundingRect().height()), brush);
       
    83 
       
    84 }
       
    85 
       
    86 DockItem::~DockItem()
       
    87 {
       
    88     delete this->pixmap;
       
    89 }
       
    90 
       
    91 QRectF DockItem::boundingRect() const
       
    92 {
       
    93     if (this->orientation == UP || this->orientation == DOWN)
       
    94         return QRectF(0, 0, this->length, this->width);
       
    95     else
       
    96         return QRectF(0, 0, this->width, this->length);
       
    97 }
       
    98 
       
    99 void DockItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
       
   100 {
       
   101     Q_UNUSED(option);
       
   102     Q_UNUSED(widget);
       
   103 
       
   104     painter->drawPixmap(0, 0, *this->pixmap);
       
   105 }
       
   106 
       
   107 
       
   108