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/*
*
* This file is part of QMapControl,
* an open-source cross-platform map widget
*
* Copyright (C) 2007 - 2008 Kai Winter
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with QMapControl. If not, see <http://www.gnu.org/licenses/>.
*
* Contact e-mail: kaiwinter@gmx.de
* Program URL : http://qmapcontrol.sourceforge.net/
*
*/
#include "layer.h"
namespace qmapcontrol
{
Layer::Layer(QString layername, MapAdapter* mapadapter, enum LayerType layertype, bool takeevents)
:visible(true), mylayername(layername), mylayertype(layertype), mapAdapter(mapadapter), takeevents(takeevents), myoffscreenViewport(QRect(0,0,0,0))
{
//qDebug() << "creating new Layer: " << layername << ", type: " << contents;
//qDebug() << this->layertype;
}
Layer::~Layer()
{
delete mapAdapter;
}
void Layer::setSize(QSize size)
{
this->size = size;
screenmiddle = QPoint(size.width()/2, size.height()/2);
//QMatrix mat;
//mat.translate(480/2, 640/2);
//mat.rotate(45);
//mat.translate(-480/2,-640/2);
//screenmiddle = mat.map(screenmiddle);
}
QString Layer::layername() const
{
return mylayername;
}
const MapAdapter* Layer::mapadapter() const
{
return mapAdapter;
}
void Layer::setVisible(bool visible)
{
this->visible = visible;
emit(updateRequest());
}
void Layer::addGeometry(Geometry* geom)
{
//qDebug() << geom->getName() << ", " << geom->getPoints().at(0)->getWidget();
geometries.append(geom);
emit(updateRequest(geom->boundingBox()));
//a geometry can request a redraw, e.g. when its position has been changed
connect(geom, SIGNAL(updateRequest(QRectF)),
this, SIGNAL(updateRequest(QRectF)));
}
void Layer::removeGeometry(Geometry* geometry)
{
for (int i=0; i<geometries.count(); i++)
{
if (geometry == geometries.at(i))
{
disconnect(geometry);
geometries.removeAt(i);
//delete geometry;
}
}
}
void Layer::clearGeometries()
{
foreach(Geometry *geometry, geometries){
disconnect(geometry);
}
geometries.clear();
}
bool Layer::isVisible() const
{
return visible;
}
void Layer::zoomIn() const
{
mapAdapter->zoom_in();
}
void Layer::zoomOut() const
{
mapAdapter->zoom_out();
}
void Layer::mouseEvent(const QMouseEvent* evnt, const QPoint mapmiddle_px)
{
if (takesMouseEvents())
{
if (evnt->button() == Qt::LeftButton && evnt->type() == QEvent::MouseButtonPress)
{
// check for collision
QPointF c = mapAdapter->displayToCoordinate(QPoint(evnt->x()-screenmiddle.x()+mapmiddle_px.x(),
evnt->y()-screenmiddle.y()+mapmiddle_px.y()));
Point* tmppoint = new Point(c.x(), c.y());
for (int i=0; i<geometries.count(); i++)
{
if (geometries.at(i)->isVisible() && geometries.at(i)->Touches(tmppoint, mapAdapter))
//if (geometries.at(i)->Touches(c, mapAdapter))
{
emit(geometryClicked(geometries.at(i), QPoint(evnt->x(), evnt->y())));
}
}
delete tmppoint;
}
}
}
bool Layer::takesMouseEvents() const
{
return takeevents;
}
void Layer::drawYourImage(QPainter* painter, const QPoint mapmiddle_px) const
{
if (mylayertype == MapLayer)
{
//qDebug() << ":: " << mapmiddle_px;
//QMatrix mat;
//mat.translate(480/2, 640/2);
//mat.rotate(45);
//mat.translate(-480/2,-640/2);
//mapmiddle_px = mat.map(mapmiddle_px);
//qDebug() << ":: " << mapmiddle_px;
_draw(painter, mapmiddle_px);
}
drawYourGeometries(painter, QPoint(mapmiddle_px.x()-screenmiddle.x(), mapmiddle_px.y()-screenmiddle.y()), myoffscreenViewport);
}
void Layer::drawYourGeometries(QPainter* painter, const QPoint mapmiddle_px, QRect viewport) const
{
QPoint offset;
if (mylayertype == MapLayer)
offset = mapmiddle_px;
else
offset = mapmiddle_px-screenmiddle;
painter->translate(-mapmiddle_px+screenmiddle);
for (int i=0; i<geometries.count(); i++)
{
geometries.at(i)->draw(painter, mapAdapter, viewport, offset);
}
painter->translate(mapmiddle_px-screenmiddle);
}
void Layer::_draw(QPainter* painter, const QPoint mapmiddle_px) const
{
// screen middle rotieren...
int tilesize = mapAdapter->tilesize();
int cross_x = int(mapmiddle_px.x())%tilesize; // position on middle tile
int cross_y = int(mapmiddle_px.y())%tilesize;
//qDebug() << screenmiddle << " - " << cross_x << ", " << cross_y;
// calculate how many surrounding tiles have to be drawn to fill the display
int space_left = screenmiddle.x() - cross_x;
int tiles_left = space_left/tilesize;
if (space_left>0)
tiles_left+=1;
int space_above = screenmiddle.y() - cross_y;
int tiles_above = space_above/tilesize;
if (space_above>0)
tiles_above+=1;
int space_right = screenmiddle.x() - (tilesize-cross_x);
int tiles_right = space_right/tilesize;
if (space_right>0)
tiles_right+=1;
int space_bottom = screenmiddle.y() - (tilesize-cross_y);
int tiles_bottom = space_bottom/tilesize;
if (space_bottom>0)
tiles_bottom+=1;
//int tiles_displayed = 0;
int mapmiddle_tile_x = mapmiddle_px.x()/tilesize;
int mapmiddle_tile_y = mapmiddle_px.y()/tilesize;
const QPoint from = QPoint((-tiles_left+mapmiddle_tile_x)*tilesize, (-tiles_above+mapmiddle_tile_y)*tilesize);
const QPoint to = QPoint((tiles_right+mapmiddle_tile_x+1)*tilesize, (tiles_bottom+mapmiddle_tile_y+1)*tilesize);
myoffscreenViewport = QRect(from, to);
// for the EmptyMapAdapter no tiles should be loaded and painted.
if (mapAdapter->host() == "")
{
return;
}
if (mapAdapter->isValid(mapmiddle_tile_x, mapmiddle_tile_y, mapAdapter->currentZoom()))
{
painter->drawPixmap(-cross_x+size.width(),
-cross_y+size.height(),
ImageManager::instance()->getImage(mapAdapter->host(), mapAdapter->query(mapmiddle_tile_x, mapmiddle_tile_y, mapAdapter->currentZoom())));
}
for (int i=-tiles_left+mapmiddle_tile_x; i<=tiles_right+mapmiddle_tile_x; i++)
{
for (int j=-tiles_above+mapmiddle_tile_y; j<=tiles_bottom+mapmiddle_tile_y; j++)
{
// check if image is valid
if (!(i==mapmiddle_tile_x && j==mapmiddle_tile_y))
if (mapAdapter->isValid(i, j, mapAdapter->currentZoom()))
{
painter->drawPixmap(((i-mapmiddle_tile_x)*tilesize)-cross_x+size.width(),
((j-mapmiddle_tile_y)*tilesize)-cross_y+size.height(),
ImageManager::instance()->getImage(mapAdapter->host(), mapAdapter->query(i, j, mapAdapter->currentZoom())));
//if (QCoreApplication::hasPendingEvents())
// QCoreApplication::processEvents();
}
}
}
// PREFETCHING
int upper = mapmiddle_tile_y-tiles_above-1;
int right = mapmiddle_tile_x+tiles_right+1;
int left = mapmiddle_tile_x-tiles_right-1;
int lower = mapmiddle_tile_y+tiles_bottom+1;
int j = upper;
for (int i=left; i<=right; i++)
{
if (mapAdapter->isValid(i, j, mapAdapter->currentZoom()))
ImageManager::instance()->prefetchImage(mapAdapter->host(), mapAdapter->query(i, j, mapAdapter->currentZoom()));
}
j = lower;
for (int i=left; i<=right; i++)
{
if (mapAdapter->isValid(i, j, mapAdapter->currentZoom()))
ImageManager::instance()->prefetchImage(mapAdapter->host(), mapAdapter->query(i, j, mapAdapter->currentZoom()));
}
int i = left;
for (int j=upper+1; j<=lower-1; j++)
{
if (mapAdapter->isValid(i, j, mapAdapter->currentZoom()))
ImageManager::instance()->prefetchImage(mapAdapter->host(), mapAdapter->query(i, j, mapAdapter->currentZoom()));
}
i = right;
for (int j=upper+1; j<=lower-1; j++)
{
if (mapAdapter->isValid(i, j, mapAdapter->currentZoom()))
ImageManager::instance()->prefetchImage(mapAdapter->host(), mapAdapter->query(i, j, mapAdapter->currentZoom()));
}
}
QRect Layer::offscreenViewport() const
{
return myoffscreenViewport;
}
void Layer::moveWidgets(const QPoint mapmiddle_px) const
{
for (int i=0; i<geometries.count(); i++)
{
const Geometry* geom = geometries.at(i);
if (geom->GeometryType == "Point")
{
if (((Point*)geom)->widget()!=0)
{
QPoint topleft_relative = QPoint(mapmiddle_px-screenmiddle);
((Point*)geom)->drawWidget(mapAdapter, topleft_relative);
}
}
}
}
Layer::LayerType Layer::layertype() const
{
return mylayertype;
}
void Layer::setMapAdapter(MapAdapter* mapadapter)
{
mapAdapter = mapadapter;
}
}