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#include <QtCore/QDebug>
#include <QtCore/QEvent>
#include <QtGui/QPainter>
#include "watch.h"
#include "graphicswatchlet.h"
using namespace sowatch;
GraphicsWatchlet::GraphicsWatchlet(WatchServer* server, const QString& id) :
Watchlet(server, id), _scene(0), _frameTimer(), _damaged()
{
_frameTimer.setSingleShot(true);
connect(&_frameTimer, SIGNAL(timeout()), SLOT(frameTimeout()));
}
GraphicsWatchlet::~GraphicsWatchlet()
{
}
QGraphicsScene* GraphicsWatchlet::scene()
{
return _scene;
}
void GraphicsWatchlet::setScene(QGraphicsScene *scene)
{
if (_scene) {
disconnect(_scene, 0, this, 0);
}
_scene = scene;
if (_scene) {
connect(_scene, SIGNAL(changed(QList<QRectF>)),
this, SLOT(sceneChanged(QList<QRectF>)));
}
}
void GraphicsWatchlet::sceneChanged(const QList<QRectF> ®ion)
{
foreach(const QRectF& r, region) {
_damaged += r.toRect();
}
if (!_damaged.isEmpty()) {
_frameTimer.start(frameDelay);
}
}
void GraphicsWatchlet::frameTimeout()
{
if (!_active) return; // Watchlet was ejected, do not draw.
if (watch()->busy()) {
_frameTimer.start(busyFrameDelay);
return;
}
const QVector<QRect> rects = _damaged.rects();
QPainter p(watch());
foreach(const QRect& r, rects) {
_scene->render(&p, r, r, Qt::IgnoreAspectRatio);
}
_damaged = QRegion();
}
void GraphicsWatchlet::activate()
{
Watchlet::activate();
// We have to assume that the watch has completely forgot about everything.
QRect area(0, 0, watch()->width(), watch()->height());
_damaged += area;
_scene->update(area);
}
void GraphicsWatchlet::deactivate()
{
_frameTimer.stop();
Watchlet::deactivate();
}
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