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#include "qsimplecanvasdebugplugin_p.h"
#include "qdebug.h"
#include <QtCore/qabstractanimation.h>
#include <qsimplecanvas.h>
#include <qsimplecanvasitem.h>

QT_BEGIN_NAMESPACE

class FrameBreakAnimation : public QAbstractAnimation
{
public:
    FrameBreakAnimation(QSimpleCanvasDebugPlugin *s)
    : QAbstractAnimation(s), server(s) 
    {
        start();
    }

    virtual int duration() const { return -1; }
    virtual void updateCurrentTime(int msecs) {
        server->frameBreak();
    }

private:
    QSimpleCanvasDebugPlugin *server;
};

QSimpleCanvasDebugPlugin::QSimpleCanvasDebugPlugin(QObject *parent)
: QmlDebugServerPlugin("CanvasFrameRate", parent), _breaks(0)
{
    _time.start();
    new FrameBreakAnimation(this);
}

void QSimpleCanvasDebugPlugin::addTiming(quint32 paint, 
                                         quint32 repaint, 
                                         quint32 timeBetweenFrames)
{
    if (!isEnabled())
        return;

    bool isFrameBreak = _breaks > 1;
    _breaks = 0;
    int e = _time.elapsed();
    QByteArray data;
    QDataStream ds(&data, QIODevice::WriteOnly);
    ds << (int)paint << (int)repaint << (int)timeBetweenFrames << (int)e 
       << (bool)isFrameBreak;
    sendMessage(data);
}

void QSimpleCanvasDebugPlugin::frameBreak()
{
    _breaks++;
}

QSimpleCanvasSceneDebugPlugin::QSimpleCanvasSceneDebugPlugin(QSimpleCanvas *parent)
: QmlDebugServerPlugin("CanvasScene", parent), m_canvas(parent)
{
}

void QSimpleCanvasSceneDebugPlugin::messageReceived(const QByteArray &)
{
    refresh();
}

void QSimpleCanvasSceneDebugPlugin::refresh()
{
    QByteArray data;
    QDataStream ds(&data, QIODevice::WriteOnly);
    const QList<QSimpleCanvasItem *> &children = m_canvas->root()->children();
    ds << children.count();
    for (int ii = 0; ii < children.count(); ++ii)
        refresh(ds, children.at(ii));

    sendMessage(data);
}

void QSimpleCanvasSceneDebugPlugin::refresh(QDataStream &ds, 
                                            QSimpleCanvasItem *item)
{
    ds << QmlDebugServerPlugin::objectToString(item) << item->x() << item->y() 
       << item->z() << item->width() << item->height() 
       << (int)item->transformOrigin() << item->scale() << (int)item->flip() 
       << item->transform() << item->hasActiveFocus() << (int)item->options();

    QPixmap pix;

    if(item->options() & QSimpleCanvasItem::HasContents && 
       item->width() > 0 && item->height() > 0) {

        pix = QPixmap(item->width(), item->height());
        pix.fill(QColor(0,0,0,0));
        QPainter p(&pix);
        item->paintContents(p);

    }

    ds << pix;

    const QList<QSimpleCanvasItem *> &children = item->children();
    ds << children.count();

    for(int ii = 0; ii < children.count(); ++ii) 
        refresh(ds, children.at(ii));
}

QT_END_NAMESPACE