void MainWindow::createActions()
{
//exportAct = new QAction(tr("&Export as ..."),this);
//exportAct->setShortcut(tr("Ctrl+E"));
//connect(exportAct, SIGNAL(triggered()), this, SLOT(export_as()));
zoomAllAct = new QAction(QIcon(":/images/home.png"),tr("Zoom All"),this);
connect(zoomAllAct, SIGNAL(triggered()), this, SLOT(zoom_all()));
zoomBoxAct = new QAction(QIcon(":/images/zoombox.png"),tr("Zoom To Box"),this);
zoomBoxAct->setCheckable(true);
connect(zoomBoxAct, SIGNAL(triggered()), this, SLOT(zoom_to_box()));
panAct = new QAction(QIcon(":/images/pan.png"),tr("Pan"),this);
panAct->setCheckable(true);
connect(panAct, SIGNAL(triggered()), this, SLOT(pan()));
infoAct = new QAction(QIcon(":/images/info.png"),tr("Info"),this);
infoAct->setCheckable(true);
connect(infoAct, SIGNAL(triggered()), this, SLOT(info()));
toolsGroup=new QActionGroup(this);
toolsGroup->addAction(zoomBoxAct);
toolsGroup->addAction(panAct);
toolsGroup->addAction(infoAct);
zoomBoxAct->setChecked(true);
openAct=new QAction(tr("Open Map definition"),this);
connect(openAct,SIGNAL(triggered()),this,SLOT(open()));
saveAct=new QAction(tr("Save Map definition"),this);
connect(saveAct,SIGNAL(triggered()),this,SLOT(save()));
panLeftAct = new QAction(QIcon(":/images/left.png"),tr("&Pan Left"),this);
connect(panLeftAct, SIGNAL(triggered()), this, SLOT(pan_left()));
panRightAct = new QAction(QIcon(":/images/right.png"),tr("&Pan Right"),this);
connect(panRightAct, SIGNAL(triggered()), this, SLOT(pan_right()));
panUpAct = new QAction(QIcon(":/images/up.png"),tr("&Pan Up"),this);
connect(panUpAct, SIGNAL(triggered()), this, SLOT(pan_up()));
panDownAct = new QAction(QIcon(":/images/down.png"),tr("&Pan Down"),this);
connect(panDownAct, SIGNAL(triggered()), this, SLOT(pan_down()));
reloadAct = new QAction(QIcon(":/images/reload.png"),tr("Reload"),this);
connect(reloadAct, SIGNAL(triggered()), this, SLOT(reload()));
layerInfo = new QAction(QIcon(":/images/info.png"),tr("&Layer info"),layerTab_);
connect(layerInfo, SIGNAL(triggered()), layerTab_,SLOT(layerInfo()));
connect(layerTab_, SIGNAL(doubleClicked(QModelIndex const&)), layerTab_,SLOT(layerInfo2(QModelIndex const&)));
foreach (QByteArray format, QImageWriter::supportedImageFormats())
{
QString text = tr("%1...").arg(QString(format).toUpper());
QAction *action = new QAction(text, this);
action->setData(format);
connect(action, SIGNAL(triggered()), this, SLOT(export_as()));
exportAsActs.append(action);
}
void Map::zoom_all()
{
try
{
if (layers_.empty())
{
return;
}
projection proj0(srs_);
box2d<double> ext;
bool success = false;
bool first = true;
std::vector<layer>::const_iterator itr = layers_.begin();
std::vector<layer>::const_iterator end = layers_.end();
while (itr != end)
{
if (itr->active())
{
std::string const& layer_srs = itr->srs();
projection proj1(layer_srs);
proj_transform prj_trans(proj0,proj1);
box2d<double> layer_ext = itr->envelope();
if (prj_trans.backward(layer_ext, PROJ_ENVELOPE_POINTS))
{
success = true;
MAPNIK_LOG_DEBUG(map) << "map: Layer " << itr->name() << " original ext=" << itr->envelope();
MAPNIK_LOG_DEBUG(map) << "map: Layer " << itr->name() << " transformed to map srs=" << layer_ext;
if (first)
{
ext = layer_ext;
first = false;
}
else
{
ext.expand_to_include(layer_ext);
}
}
}
++itr;
}
if (success)
{
if (maximum_extent_) {
ext.clip(*maximum_extent_);
}
zoom_to_box(ext);
}
else
{
if (maximum_extent_)
{
MAPNIK_LOG_ERROR(map) << "could not zoom to combined layer extents"
<< " so falling back to maximum-extent for zoom_all result";
zoom_to_box(*maximum_extent_);
}
else
{
std::ostringstream s;
s << "could not zoom to combined layer extents "
<< "using zoom_all because proj4 could not "
<< "back project any layer extents into the map srs "
<< "(set map 'maximum-extent' to override layer extents)";
throw std::runtime_error(s.str());
}
}
}
catch (proj_init_error const& ex)
{
throw mapnik::config_error(std::string("Projection error during map.zoom_all: ") + ex.what());
}
}
void Map::zoom_all()
{
if (maximum_extent_) {
zoom_to_box(*maximum_extent_);
}
else
{
try
{
if (!layers_.size() > 0)
return;
projection proj0(srs_);
box2d<double> ext;
bool success = false;
bool first = true;
std::vector<layer>::const_iterator itr = layers_.begin();
std::vector<layer>::const_iterator end = layers_.end();
while (itr != end)
{
if (itr->isActive())
{
std::string const& layer_srs = itr->srs();
projection proj1(layer_srs);
proj_transform prj_trans(proj0,proj1);
box2d<double> layer_ext = itr->envelope();
// TODO - consider using more robust method: http://trac.mapnik.org/ticket/751
if (prj_trans.backward(layer_ext))
{
success = true;
#ifdef MAPNIK_DEBUG
std::clog << " layer " << itr->name() << " original ext: " << itr->envelope() << "\n";
std::clog << " layer " << itr->name() << " transformed to map srs: " << layer_ext << "\n";
#endif
if (first)
{
ext = layer_ext;
first = false;
}
else
{
ext.expand_to_include(layer_ext);
}
}
}
++itr;
}
if (success) {
zoom_to_box(ext);
} else {
std::ostringstream s;
s << "could not zoom to combined layer extents "
<< "using zoom_all because proj4 could not "
<< "back project any layer extents into the map srs "
<< "(set map 'maximum-extent' to override layer extents)";
throw std::runtime_error(s.str());
}
}
catch (proj_init_error & ex)
{
std::clog << "proj_init_error:" << ex.what() << "\n";
}
}
}
