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#include "chiptester.h"

#include "chip.h"

#include <QtGui>

#ifndef QT_NO_OPENGL

#include <QtOpenGL>

#endif

ChipTester::ChipTester(QWidget *parent)

    : QGraphicsView(parent),

      npaints(0)

{

    resize(400, 300);

    setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

    setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

    setFrameStyle(0);

    setTransformationAnchor(NoAnchor);

    populateScene();

    setScene(scene);

    setWindowTitle(tr("Chip Demo"));

}

void ChipTester::setAntialias(bool enabled)

{

    setRenderHint(QPainter::Antialiasing, enabled);

}

void ChipTester::setOpenGL(bool enabled)

{

#ifndef QT_NO_OPENGL

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

#endif

}

void ChipTester::setOperation(Operation operation)

{

    this->operation = operation;

}

void ChipTester::runBenchmark()

{

    npaints = 0;

    timerId = startTimer(0);

    stopWatch.start();

    eventLoop.exec();

    killTimer(timerId);

}

void ChipTester::paintEvent(QPaintEvent *event)

{

    QGraphicsView::paintEvent(event);

    if (++npaints == 50)

	eventLoop.quit();

}

void ChipTester::timerEvent(QTimerEvent *)

{

    switch (operation) {

    case Rotate360:

	rotate(1);

	break;

    case ZoomInOut: {

	qreal s = 0.05 + (npaints / 20.0);

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

	break;

    }

    case Translate: {

	int offset = horizontalScrollBar()->minimum()

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

	horizontalScrollBar()->setValue(offset);

	break;

    }

    }

}

void ChipTester::populateScene()

{

    scene = new QGraphicsScene;

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

    // Populate scene

    int xx = 0;

    int nitems = 0;

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

        ++xx;

        int yy = 0;

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

            ++yy;

            qreal x = (i + 1100) / 2200.0;

            qreal y = (j + 700) / 1400.0;

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

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

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

            scene->addItem(item);

            ++nitems;

        }

    }

}