MapItem.cpp

#include "MapItem.h"

MapItem::MapItem(QQuickItem *parent=0) : MapItem(parent)
{
	map()->setSize(width(), height());
    map()->setShowFrameRate(true);
    map()->setProjection(Mercator);
    map()->setMapThemeId("earth/openstreetmap/openstreetmap.dgml");
    map()->setShowAtmosphere(false);
    map()->setShowCompass(false);
    map()->setShowClouds(false);
    map()->setShowCrosshairs(false);
    map()->setShowGrid(false);
    map()->setShowOverviewMap(false);
    map()->setShowOtherPlaces(false);
    map()->setShowScaleBar(false);
    map()->setShowBackground(false);
}

MapItem::~MapItem()
{
}

void MapItem::componentComplete()
{

	QQuickItem *pinch = findChild<QQuickItem*>("pinchArea");
	if (pinch)
	{
		pinch->setFiltersChildMouseEvents(childMouseEventFilter());
	}
}
void MapItem::makePinch(QPointF center, Qt::GestureState currentState, qreal scale =1)
{
	scale = sqrt(sqrt(scale));
	scale = qBound(0.5, scale, 2.0);
	pinch(center, scale, currentState);
}

void MapItem::pinchStart(QPointF center)
{
	makePinch(center, Qt::GestureStarted);
}

void MapItem::pinchEnd(QPointF center, bool stop)
{
	// cancle the pinch or the pinch finished
	makePinch(center, stop ? Qt::GestureFinished : Qt::GestureCanceled);
}

void MapItem::pinchUpdate(QPointF center, qreal scaleFactor)
{
	makePinch(center, Qt::GestureUpdated, scaleFactor);
}