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     2 **

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

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

     6 **

     7 ** This file is part of the test suite of the Qt Toolkit.

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    13 ** contained in the Technology Preview License Agreement accompanying

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    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

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    38 ** $QT_END_LICENSE$

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

    41 

    42 #include "chiptester.h"

    43 #include "chip.h"

    44 

    45 #include <QtGui>

    46 #ifndef QT_NO_OPENGL

    47 #include <QtOpenGL>

    48 #endif

    49 

    50 ChipTester::ChipTester(QWidget *parent)

    51     : QGraphicsView(parent),

    52       npaints(0)

    53 {

    54     resize(400, 300);

    55     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

    56     setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

    57     setFrameStyle(0);

    58     setTransformationAnchor(NoAnchor);

    59 

    60     populateScene();

    61     setScene(scene);

    62 

    63     setWindowTitle(tr("Chip Demo"));

    64 }

    65 

    66 void ChipTester::setAntialias(bool enabled)

    67 {

    68     setRenderHint(QPainter::Antialiasing, enabled);

    69 }

    70 

    71 void ChipTester::setOpenGL(bool enabled)

    72 {

    73 #ifndef QT_NO_OPENGL

    74     setViewport(enabled ? new QGLWidget(QGLFormat(QGL::SampleBuffers)) : 0);

    75 #endif

    76 }

    77 

    78 void ChipTester::setOperation(Operation operation)

    79 {

    80     this->operation = operation;

    81 }

    82 

    83 void ChipTester::runBenchmark()

    84 {

    85     npaints = 0;

    86     timerId = startTimer(0);

    87     stopWatch.start();

    88     eventLoop.exec();

    89     killTimer(timerId);

    90 }

    91 

    92 void ChipTester::paintEvent(QPaintEvent *event)

    93 {

    94     QGraphicsView::paintEvent(event);

    95     if (++npaints == 50)

    96 	eventLoop.quit();

    97 }

    98 

    99 void ChipTester::timerEvent(QTimerEvent *)

   100 {

   101     switch (operation) {

   102     case Rotate360:

   103 	rotate(1);

   104 	break;

   105     case ZoomInOut: {

   106 	qreal s = 0.05 + (npaints / 20.0);

   107 	setTransform(QTransform().scale(s, s));

   108 	break;

   109     }

   110     case Translate: {

   111 	int offset = horizontalScrollBar()->minimum()

   112 	    + (npaints % (horizontalScrollBar()->maximum() - horizontalScrollBar()->minimum()));

   113 	horizontalScrollBar()->setValue(offset);

   114 	break;

   115     }

   116     }

   117 }

   118 

   119 void ChipTester::populateScene()

   120 {

   121     scene = new QGraphicsScene;

   122 

   123     QImage image(":/qt4logo.png");

   124 

   125     // Populate scene

   126     int xx = 0;

   127     int nitems = 0;

   128     for (int i = -1100; i < 1100; i += 110) {

   129         ++xx;

   130         int yy = 0;

   131         for (int j = -700; j < 700; j += 70) {

   132             ++yy;

   133             qreal x = (i + 1100) / 2200.0;

   134             qreal y = (j + 700) / 1400.0;

   135 

   136             QColor color(image.pixel(int(image.width() * x), int(image.height() * y)));

   137             QGraphicsItem *item = new Chip(color, xx, yy);

   138             item->setPos(QPointF(i, j));

   139             scene->addItem(item);

   140 

   141             ++nitems;

   142         }

   143     }

   144 }