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coordinatecapture.cpp
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coordinatecapture.cpp
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/***************************************************************************
coordinatecapture.cpp
// Capture mouse coordinates in different CRS
-------------------
begin : [PluginDate]
copyright : [(C) Your Name and Date]
email : [Your Email]
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
//
// QGIS Specific includes
//
#include <qgisinterface.h>
#include <qgisgui.h>
#include "qgsapplication.h"
#include <qgspoint.h>
#include <qgsmapcanvas.h>
#include <qgsmaprenderer.h>
#include <qgis.h>
#include <qgscoordinatereferencesystem.h>
#include <qgscoordinatetransform.h>
#include <qgsgenericprojectionselector.h>
#include "coordinatecapture.h"
#include "coordinatecapturegui.h"
//
// Qt4 Related Includes
//
#include <QAction>
#include <QToolBar>
#include <QDockWidget>
#include <QLayout>
#include <QLineEdit>
#include <QClipboard>
#include <QPushButton>
#include <QToolButton>
#include <QFile>
#include <QLabel>
static const QString sName = QObject::tr( "Coordinate Capture" );
static const QString sDescription = QObject::tr( "Capture mouse coordinates in different CRS" );
static const QString sCategory = QObject::tr( "Vector" );
static const QString sPluginVersion = QObject::tr( "Version 0.1" );
static const QString sPluginIcon = ":/coordinate_capture/coordinate_capture.png";
static const QgisPlugin::PLUGINTYPE sPluginType = QgisPlugin::UI;
//////////////////////////////////////////////////////////////////////
//
// THE FOLLOWING METHODS ARE MANDATORY FOR ALL PLUGINS
//
//////////////////////////////////////////////////////////////////////
/**
* Constructor for the plugin. The plugin is passed a pointer
* an interface object that provides access to exposed functions in QGIS.
* @param theQGisInterface - Pointer to the QGIS interface object
*/
CoordinateCapture::CoordinateCapture( QgisInterface * theQgisInterface )
: QgisPlugin( sName, sDescription, sCategory, sPluginVersion, sPluginType )
, mQGisIface( theQgisInterface )
{
}
CoordinateCapture::~CoordinateCapture()
{
}
/*
* Initialize the GUI interface for the plugin - this is only called once when the plugin is
* added to the plugin registry in the QGIS application.
*/
void CoordinateCapture::initGui()
{
mCrs.createFromSrsId( GEOCRS_ID ); // initialize the CRS object
connect( mQGisIface->mapCanvas()->mapRenderer(), SIGNAL( destinationSrsChanged() ), this, SLOT( setSourceCrs() ) );
connect( mQGisIface, SIGNAL( currentThemeChanged( QString ) ), this, SLOT( setCurrentTheme( QString ) ) );
setSourceCrs(); //set up the source CRS
mTransform.setDestCRS( mCrs ); // set the CRS in the transform
mUserCrsDisplayPrecision = ( mCrs.mapUnits() == QGis::Degrees ) ? 5 : 3; // precision depends on CRS units
//create the dock widget
mpDockWidget = new QDockWidget( tr( "Coordinate Capture" ), mQGisIface->mainWindow() );
mpDockWidget->setObjectName( "CoordinateCapture" );
mpDockWidget->setAllowedAreas( Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea );
mQGisIface->addDockWidget( Qt::LeftDockWidgetArea, mpDockWidget );
// Create the action for tool
mQActionPointer = new QAction( QIcon(), tr( "Coordinate Capture" ), this );
mQActionPointer->setCheckable( true );
mQActionPointer->setChecked( mpDockWidget->isVisible() );
// Set the what's this text
mQActionPointer->setWhatsThis( tr( "Click on the map to view coordinates and capture to clipboard." ) );
// Connect the action to the run
connect( mQActionPointer, SIGNAL( triggered() ), this, SLOT( showOrHide() ) );
mQGisIface->addPluginToVectorMenu( tr( "&Coordinate Capture" ), mQActionPointer );
mQGisIface->addVectorToolBarIcon( mQActionPointer );
// create our map tool
mpMapTool = new CoordinateCaptureMapTool( mQGisIface->mapCanvas() );
connect( mpMapTool, SIGNAL( mouseMoved( QgsPoint ) ), this, SLOT( mouseMoved( QgsPoint ) ) );
connect( mpMapTool, SIGNAL( mouseClicked( QgsPoint ) ), this, SLOT( mouseClicked( QgsPoint ) ) );
// create a little widget with x and y display to put into our dock widget
QWidget * mypWidget = new QWidget();
QGridLayout *mypLayout = new QGridLayout( mypWidget );
mypLayout->setColumnMinimumWidth( 0, 36 );
mypWidget->setLayout( mypLayout );
mypUserCrsToolButton = new QToolButton( mypWidget );
mypUserCrsToolButton->setToolTip( tr( "Click to select the CRS to use for coordinate display" ) );
connect( mypUserCrsToolButton, SIGNAL( clicked() ), this, SLOT( setCRS() ) );
mypCRSLabel = new QLabel( mypWidget );
mypCRSLabel->setGeometry( mypUserCrsToolButton->geometry() );
mpUserCrsEdit = new QLineEdit( mypWidget );
mpUserCrsEdit->setReadOnly( true );
mpUserCrsEdit->setToolTip( tr( "Coordinate in your selected CRS (lat,lon or east,north)" ) );
mpCanvasEdit = new QLineEdit( mypWidget );
mpCanvasEdit->setReadOnly( true );
mpCanvasEdit->setToolTip( tr( "Coordinate in map canvas coordinate reference system (lat,lon or east,north)" ) );
QPushButton * mypCopyButton = new QPushButton( mypWidget );
mypCopyButton->setText( tr( "Copy to clipboard" ) );
connect( mypCopyButton, SIGNAL( clicked() ), this, SLOT( copy() ) );
mpTrackMouseButton = new QToolButton( mypWidget );
mpTrackMouseButton->setCheckable( true );
mpTrackMouseButton->setToolTip( tr( "Click to enable mouse tracking. Click the canvas to stop" ) );
mpTrackMouseButton->setChecked( false );
// Create the action for tool
mpCaptureButton = new QPushButton( mypWidget );
mpCaptureButton->setText( tr( "Start capture" ) );
mpCaptureButton->setToolTip( tr( "Click to enable coordinate capture" ) );
mpCaptureButton->setIcon( QIcon( ":/coordinate_capture/coordinate_capture.png" ) );
mpCaptureButton->setWhatsThis( tr( "Click on the map to view coordinates and capture to clipboard." ) );
connect( mpCaptureButton, SIGNAL( clicked() ), this, SLOT( run() ) );
// Set the icons
setCurrentTheme( "" );
mypLayout->addWidget( mypUserCrsToolButton, 0, 0 );
mypLayout->addWidget( mpUserCrsEdit, 0, 1 );
mypLayout->addWidget( mypCRSLabel, 1, 0 );
mypLayout->addWidget( mpCanvasEdit, 1, 1 );
mypLayout->addWidget( mpTrackMouseButton, 2, 0 );
mypLayout->addWidget( mypCopyButton, 2, 1 );
mypLayout->addWidget( mpCaptureButton, 3, 1 );
// now add our custom widget to the dock - ownership of the widget is passed to the dock
mpDockWidget->setWidget( mypWidget );
connect( mpDockWidget, SIGNAL( visibilityChanged( bool ) ), mQActionPointer, SLOT( setChecked( bool ) ) );
}
//method defined in interface
void CoordinateCapture::help()
{
//implement me!
}
void CoordinateCapture::setCRS()
{
QgsGenericProjectionSelector mySelector( mQGisIface->mainWindow() );
mySelector.setSelectedCrsId( mCrs.srsid() );
if ( mySelector.exec() )
{
mCrs.createFromSrsId( mySelector.selectedCrsId() );
mTransform.setDestCRS( mCrs );
mUserCrsDisplayPrecision = ( mCrs.mapUnits() == QGis::Degrees ) ? 5 : 3; //precision depends on CRS units
}
}
void CoordinateCapture::setSourceCrs()
{
mTransform.setSourceCrs( mQGisIface->mapCanvas()->mapRenderer()->destinationCrs() );
mCanvasDisplayPrecision = ( mQGisIface->mapCanvas()->mapRenderer()->destinationCrs().mapUnits() == QGis::Degrees ) ? 5 : 3; // for the map canvas coordinate display
}
void CoordinateCapture::mouseClicked( QgsPoint thePoint )
{
//clicking on the canvas will update the widgets and then disable
//tracking so the user can copy the click point coords
mpTrackMouseButton->setChecked( false );
update( thePoint );
}
void CoordinateCapture::mouseMoved( QgsPoint thePoint )
{
//mouse movements will only update the widgets if the
//tracking button is checked
if ( mpTrackMouseButton->isChecked() )
{
update( thePoint );
}
}
void CoordinateCapture::update( QgsPoint thePoint )
{
//this is the coordinate resolved back to lat / lon
QgsPoint myUserCrsPoint = mTransform.transform( thePoint );
mpUserCrsEdit->setText( QString::number( myUserCrsPoint.x(), 'f', mUserCrsDisplayPrecision ) + "," +
QString::number( myUserCrsPoint.y(), 'f', mUserCrsDisplayPrecision ) );
// This is the coordinate space of the map canvas
mpCanvasEdit->setText( QString::number( thePoint.x(), 'f', mCanvasDisplayPrecision ) + "," +
QString::number( thePoint.y(), 'f', mCanvasDisplayPrecision ) );
}
void CoordinateCapture::copy()
{
QClipboard *myClipboard = QApplication::clipboard();
//if we are on x11 system put text into selection ready for middle button pasting
if ( myClipboard->supportsSelection() )
{
myClipboard->setText( mpUserCrsEdit->text() + "," + mpCanvasEdit->text(), QClipboard::Selection );
}
myClipboard->setText( mpUserCrsEdit->text() + "," + mpCanvasEdit->text(), QClipboard::Clipboard );
}
// Slot called when the menu item is triggered
// If you created more menu items / toolbar buttons in initiGui, you should
// create a separate handler for each action - this single run() method will
// not be enough
void CoordinateCapture::run()
{
mQGisIface->mapCanvas()->setMapTool( mpMapTool );
//CoordinateCaptureGui *myPluginGui=new CoordinateCaptureGui(mQGisIface->mainWindow(), QgisGui::ModalDialogFlags);
//myPluginGui->setAttribute(Qt::WA_DeleteOnClose);
//myPluginGui->show();
}
void CoordinateCapture::showOrHide()
{
if ( !mpDockWidget )
run();
else
if ( mQActionPointer->isChecked() )
mpDockWidget->show();
else
mpDockWidget->hide();
}
// Unload the plugin by cleaning up the GUI
void CoordinateCapture::unload()
{
// remove the GUI
mQGisIface->removePluginVectorMenu( "&Coordinate Capture", mQActionPointer );
mQGisIface->removeVectorToolBarIcon( mQActionPointer );
mpMapTool->deactivate();
delete mpMapTool;
delete mpDockWidget;
delete mQActionPointer;
}
// Set icons to the current theme
void CoordinateCapture::setCurrentTheme( QString theThemeName )
{
Q_UNUSED( theThemeName );
mQActionPointer->setIcon( QIcon( getIconPath( "coordinate_capture.png" ) ) );
mpTrackMouseButton->setIcon( QIcon( getIconPath( "tracking.png" ) ) );
mpCaptureButton->setIcon( QIcon( getIconPath( "coordinate_capture.png" ) ) );
mypUserCrsToolButton->setIcon( QIcon( getIconPath( "geographic.png" ) ) );
mypCRSLabel->setPixmap( QPixmap( getIconPath( "transformed.png" ) ) );
}
// Get path to the best available icon file
QString CoordinateCapture::getIconPath( const QString theName )
{
QString myCurThemePath = QgsApplication::activeThemePath() + "/plugins/coordinate_capture/" + theName;
QString myDefThemePath = QgsApplication::defaultThemePath() + "/plugins/coordinate_capture/" + theName;
QString myQrcPath = ":/coordinate_capture/" + theName;
if ( QFile::exists( myCurThemePath ) )
{
return myCurThemePath;
}
else if ( QFile::exists( myDefThemePath ) )
{
return myDefThemePath;
}
else if ( QFile::exists( myQrcPath ) )
{
return myQrcPath;
}
else
{
return "";
}
}
//////////////////////////////////////////////////////////////////////////
//
//
// THE FOLLOWING CODE IS AUTOGENERATED BY THE PLUGIN BUILDER SCRIPT
// YOU WOULD NORMALLY NOT NEED TO MODIFY THIS, AND YOUR PLUGIN
// MAY NOT WORK PROPERLY IF YOU MODIFY THIS INCORRECTLY
//
//
//////////////////////////////////////////////////////////////////////////
/**
* Required extern functions needed for every plugin
* These functions can be called prior to creating an instance
* of the plugin class
*/
// Class factory to return a new instance of the plugin class
QGISEXTERN QgisPlugin * classFactory( QgisInterface * theQgisInterfacePointer )
{
return new CoordinateCapture( theQgisInterfacePointer );
}
// Return the name of the plugin - note that we do not user class members as
// the class may not yet be insantiated when this method is called.
QGISEXTERN QString name()
{
return sName;
}
// Return the description
QGISEXTERN QString description()
{
return sDescription;
}
// Return the category
QGISEXTERN QString category()
{
return sCategory;
}
// Return the type (either UI or MapLayer plugin)
QGISEXTERN int type()
{
return sPluginType;
}
// Return the version number for the plugin
QGISEXTERN QString version()
{
return sPluginVersion;
}
QGISEXTERN QString icon()
{
return sPluginIcon;
}
// Delete ourself
QGISEXTERN void unload( QgisPlugin * thePluginPointer )
{
delete thePluginPointer;
}