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 test suite 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 #include "shower.h"

    42 

    43 #include "qengines.h"

    44 

    45 #include <QApplication>

    46 #include <QSvgRenderer>

    47 #include <QPainter>

    48 #include <QPaintEvent>

    49 #include <QFile>

    50 #include <QTextStream>

    51 #include <QTemporaryFile>

    52 #include <QDir>

    53 #include <QtDebug>

    54 

    55 static QString loadFile(const QString &name)

    56 {

    57     QFile file(name);

    58     if (!file.open(QFile::ReadOnly)) {

    59         qDebug("Can't open file '%s'", qPrintable(name));

    60         return QString();

    61     }

    62     QTextStream str(&file);

    63     return str.readAll();

    64 }

    65 

    66 Shower::Shower(const QString &file,

    67                const QString &engineName)

    68     : QWidget(0)

    69 {

    70     foreach(QEngine *qengine, QtEngines::self()->engines()) {

    71         if (qengine->name() == engineName) {

    72             engine = qengine;

    73             break;

    74         }

    75     }

    76 

    77     QFileInfo fi(file);

    78     baseDataDir = fi.absolutePath();

    79     if (file.endsWith("svg")) {

    80         renderer = new QSvgRenderer(this);

    81         renderer->load(file);

    82     } else {

    83         qps = QFileInfo(file);

    84         QString script = loadFile(qps.absoluteFilePath());

    85         qpsScript = script.split("\n", QString::SkipEmptyParts);

    86         renderer = 0;

    87         if (qpsScript.isEmpty()) {

    88             printf("failed to read file: '%s'\n", qPrintable(qps.fileName()));

    89             return;

    90         }

    91     }

    92 }

    93 

    94 

    95 QSize Shower::sizeHint() const

    96 {

    97     return QSize(600, 600);

    98 }

    99 

   100 

   101 void Shower::paintEvent(QPaintEvent *)

   102 {

   103     if (buffer.size() != size()) {

   104         buffer = QImage(size(), QImage::Format_ARGB32_Premultiplied);

   105         QPainter p(&buffer);

   106         p.setViewport(0, 0, width(), height());

   107         p.eraseRect(0, 0, width(), height());

   108         engine->prepare(size());

   109         if (renderer) {

   110             engine->render(renderer, QString("sample"));

   111         } else {

   112             engine->render(qpsScript, qps.absoluteFilePath());

   113         }

   114         if (!engine->drawOnPainter(&p)) {

   115             QString tempFileName = QString("%1sample.png").arg(QDir::tempPath());

   116             engine->save(tempFileName);

   117             QImage img(tempFileName);

   118             engine->cleanup();

   119             QFile::remove(tempFileName);

   120             p.drawImage(0, 0, img);

   121         }

   122     }

   123     QPainter pt(this);

   124     pt.drawImage(0, 0, buffer);

   125 }