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qgisapp.cpp
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qgisapp.cpp
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/***************************************************************************
qgisapp.cpp - description
-------------------
begin : Sat Jun 22 2002
copyright : (C) 2002 by Gary E.Sherman
email : sherman at mrcc.com
Romans 3:23=>Romans 6:23=>Romans 10:9,10=>Romans 12
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
/* $Id$ */
//
// QT4 includes make sure to use the new <CamelCase> style!
//
#include <Q3ListViewItem>
#include <QAction>
#include <QApplication>
#include <QBitmap>
#include <QCheckBox>
#include <QClipboard>
#include <QColor>
#include <QCursor>
#include <QDesktopWidget>
#include <QDialog>
#include <QDir>
#include <QEvent>
#include <QFile>
#include <QFileInfo>
#include <QInputDialog>
#include <QKeyEvent>
#include <QLabel>
#include <QLibrary>
#include <QMenu>
#include <QMenuBar>
#include <QMenuItem>
#include <QMessageBox>
#include <QPainter>
#include <QPictureIO>
#include <QPixmap>
#include <QPoint>
#include <QPrinter>
#include <QProcess>
#include <QProgressBar>
#include <QSettings>
#include <QStringList>
#include <QTcpSocket>
#include <QTextStream>
#include <QToolButton>
#include <QToolTip>
#include <QVBoxLayout>
#include <QWhatsThis>
#include <QSplashScreen>
//
// QGIS Specific Includes
//
#include "qgisapp.h"
#include "qgis.h"
#include "qgsabout.h"
#include "qgsapplication.h"
#include "qgsbookmarkitem.h"
#include "qgsbookmarks.h"
#include "qgscomposer.h"
#include <qgscursors.h>
#include "qgscustomprojectiondialog.h"
#include "qgsencodingfiledialog.h"
#include "qgsgeomtypedialog.h"
#include "qgshelpviewer.h"
#include "qgslegend.h"
#include "qgslegendlayerfile.h"
#include "qgslegendlayerfile.h"
#include "qgslegendlayer.h"
#include "qgsmapcanvas.h"
#include "qgsmapoverviewcanvas.h"
#include "qgsmaprender.h"
#include "qgsmaplayer.h"
#include "qgsmaplayerinterface.h"
#include "qgsmaplayerregistry.h"
#include "qgsmapserverexport.h"
#include "qgsmessageviewer.h"
#include "qgsoptions.h"
#include "qgspastetransformations.h"
#include "qgspluginitem.h"
#include "qgspluginmanager.h"
#include "qgspluginregistry.h"
#include "qgsproject.h"
#include "qgsprojectproperties.h"
#include "qgsproviderregistry.h"
#include "qgsrasterlayer.h"
#include "qgsrasterlayerproperties.h"
#include "qgsrect.h"
#include "qgsserversourceselect.h"
#include "qgssinglesymbolrenderer.h"
#include "qgsvectorfilewriter.h"
#include "qgsvectorlayer.h"
#include "qgisplugin.h"
#include "qgsvectordataprovider.h"
#include "../../images/themes/default/qgis.xpm"
//
// Gdal/Ogr includes
//
#include <ogrsf_frmts.h>
//
// Other includes
//
#include <algorithm>
#include <cmath>
#include <functional>
#include <iomanip>
#include <iostream>
#include <list>
#include <memory>
#include <vector>
//
// Map tools
//
#include "qgsmaptoolcapture.h"
#include "qgsmaptoolidentify.h"
#include "qgsmaptoolselect.h"
#include "qgsmaptoolpan.h"
#include "qgsmaptoolvertexedit.h"
#include "qgsmaptoolzoom.h"
#include "qgsmeasure.h"
//
// Conditional Includes
//
#ifdef Q_OS_MACX
#include <ApplicationServices/ApplicationServices.h>
#endif
#ifdef HAVE_POSTGRESQL
#include "qgsdbsourceselect.h"
#endif
#ifndef WIN32
#include <dlfcn.h>
#endif
using namespace std;
class QTreeWidgetItem;
/* typedefs for plugins */
typedef QgsMapLayerInterface *create_it();
typedef QgisPlugin *create_ui(QgisApp * qgis, QgisIface * qI);
typedef QString name_t();
typedef QString description_t();
typedef int type_t();
// IDs for locating particular menu items
const int BEFORE_RECENT_PATHS = 123;
const int AFTER_RECENT_PATHS = 321;
/// build the vector file filter string for a QFileDialog
/*
called in ctor for initializing mVectorFileFilter
*/
static void buildSupportedVectorFileFilter_(QString & fileFilters);
/** set the application title bar text
If the current project title is null
if the project file is null then
set title text to just application name and version
else
set set title text to the the project file name
else
set the title text to project title
*/
static void setTitleBarText_( QWidget & qgisApp )
{
QString caption = QgisApp::tr("Quantum GIS - ");
caption += QString("%1 ('%2') ").arg(QGis::qgisVersion).arg(QGis::qgisReleaseName) + " ";
if ( QgsProject::instance()->title().isEmpty() )
{
if ( QgsProject::instance()->filename().isEmpty() )
{
// no project title nor file name, so just leave caption with
// application name and version
}
else
{
QFileInfo projectFileInfo( QgsProject::instance()->filename() );
caption += projectFileInfo.baseName();
}
}
else
{
caption += QgsProject::instance()->title();
}
qgisApp.setCaption( caption );
} // setTitleBarText_( QWidget * qgisApp )
// constructor starts here
QgisApp::QgisApp(QSplashScreen *splash, QWidget * parent, Qt::WFlags fl)
: QMainWindow(parent,fl),
mSplash(splash)
{
setupUi(this);
mSplash->showMessage("Reading settings", Qt::AlignHCenter | Qt::AlignBottom);
qApp->processEvents();
readSettings();
mSplash->showMessage("Setting up the GUI", Qt::AlignHCenter | Qt::AlignBottom);
qApp->processEvents();
createActions();
createActionGroups();
createMenus();
createToolBars();
createStatusBar();
setTheme(mThemeName);
updateRecentProjectPaths();
createCanvas();
createOverview();
createLegend();
fileNew(); // prepare empty project
mSplash->showMessage("Checking database", Qt::AlignHCenter | Qt::AlignBottom);
qApp->processEvents();
createDB();
// register all GDAL and OGR plug-ins
// Should this be here? isnt it the job of the provider? Tim
OGRRegisterAll();
QPixmap icon;
icon = QPixmap(qgis_xpm);
setIcon(icon);
// store startup location
QDir *d = new QDir();
mStartupPath = d->absPath();
delete d;
QBitmap zoomincur;
// zoomincur = QBitmap(cursorzoomin);
QBitmap zoomincurmask;
// zoomincurmask = QBitmap(cursorzoomin_mask);
QString caption = tr("Quantum GIS - ");
caption += QString("%1 ('%2')").arg(QGis::qgisVersion).arg(QGis::qgisReleaseName);
setCaption(caption);
// create the interfce
mQgisInterface = new QgisIface(this);
//
// Create the plugin registry and load plugins
//
// Get pointer to the provider registry singleton
QString plib = QgsApplication::pluginPath();
// set the provider plugin path
mProviderRegistry = QgsProviderRegistry::instance(plib);
#ifdef QGISDEBUG
std::cout << "Plugins and providers are installed in " << plib.toLocal8Bit().data() << std::endl;
#endif
// load any plugins that were running in the last session
mSplash->showMessage("Restoring loaded plugins", Qt::AlignHCenter | Qt::AlignBottom);
qApp->processEvents();
restoreSessionPlugins(plib);
/* Delete this I think - Tim - FIXME
//
// Create the map layer registry. Any layers loaded will
// register themselves here. Deleting layers shouls ONLY
// be done by means of a removeMapLayer call to the regsitry.
// This allows a single layer instance to be shared
// between more than one canvas. The registry is a singleton
// and is constructed using the static instance call.
// syntactic sugar shortcut for instance handle
//QgsMapLayerRegistry * mapLayerRegistry = QgsMapLayerRegistry::instance();
*/
// Map composer
mComposer = new QgsComposer(this);
mSplash->showMessage("Initializing file filters", Qt::AlignHCenter | Qt::AlignBottom);
qApp->processEvents();
// now build vector file filter
buildSupportedVectorFileFilter_( mVectorFileFilter );
// now build raster file filter
QgsRasterLayer::buildSupportedRasterFileFilter( mRasterFileFilter );
// Set the background colour for toolbox and overview as they default to
// white instead of the window color
QPalette myPalette = toolBox->palette();
myPalette.setColor(QPalette::Button, myPalette.window().color());
toolBox->setPalette(myPalette);
//do the same for legend control
myPalette = toolBox->palette();
myPalette.setColor(QPalette::Button, myPalette.window().color());
mMapLegend->setPalette(myPalette);
//and for overview control this is done in createOverView method
// Do this last in the ctor to ensure that all members are instantiated properly
setupConnections();
//
// Please make sure this is the last thing the ctor does so that we can ensure teh
// widgets are all initialised before trying to restore their state.
//
mSplash->showMessage("Restoring window state", Qt::AlignHCenter | Qt::AlignBottom);
qApp->processEvents();
restoreWindowState();
mSplash->showMessage("QGIS Ready!", Qt::AlignHCenter | Qt::AlignBottom);
qApp->processEvents();
} // QgisApp ctor
QgisApp::~QgisApp()
{}
// restore any application settings stored in QSettings
void QgisApp::readSettings()
{
// get the application dir
mAppDir = QgsApplication::prefixPath();
QSettings settings;
// get the users theme preference from the settings
mThemeName = settings.readEntry("/Themes","default");
// Set the initial visibility flag for layers
// This user option allows the user to turn off inital drawing of
// layers when they are added to the map. This is useful when adding
// many layers and the user wants to adjusty symbology, etc prior to
// actually viewing the layer.
mAddedLayersVisible = settings.readBoolEntry("/qgis/new_layers_visible", 1);
// Add the recently accessed project file paths to the File menu
mRecentProjectPaths = settings.readListEntry("/UI/recentProjectsList");
}
//////////////////////////////////////////////////////////////////////
// Set Up the gui toolbars, menus, statusbar etc
//////////////////////////////////////////////////////////////////////
void QgisApp::createActions()
{
QString myIconPath = QgsApplication::themePath();
//
// File Menu Related Items
//
mActionFileNew= new QAction(QIcon(myIconPath+"/mActionFileNew.png"), tr("&New Project"), this);
mActionFileNew->setShortcut(tr("Ctrl+N"));
mActionFileNew->setStatusTip(tr("New Project"));
connect(mActionFileNew, SIGNAL(triggered()), this, SLOT(fileNew()));
//
mActionFileOpen= new QAction(QIcon(myIconPath+"/mActionFileOpen.png"), tr("&Open Project..."), this);
mActionFileOpen->setShortcut(tr("Ctrl+O"));
mActionFileOpen->setStatusTip(tr("Open a Project"));
connect(mActionFileOpen, SIGNAL(triggered()), this, SLOT(fileOpen()));
//
mActionFileSave= new QAction(QIcon(myIconPath+"/mActionFileSave.png"), tr("&Save Project"), this);
mActionFileSave->setShortcut(tr("Ctrl+O"));
mActionFileSave->setStatusTip(tr("Open a Project"));
connect(mActionFileSave, SIGNAL(triggered()), this, SLOT(fileSave()));
//
mActionFileSaveAs= new QAction(QIcon(myIconPath+"/mActionFileSaveAs.png"), tr("Save Project &As..."), this);
mActionFileSaveAs->setShortcut(tr("Ctrl+A"));
mActionFileSaveAs->setStatusTip(tr("Save Project under a new name"));
connect(mActionFileSaveAs, SIGNAL(triggered()), this, SLOT(fileSaveAs()));
//
mActionFilePrint= new QAction(QIcon(myIconPath+"/mActionFilePrint.png"), tr("&Print..."), this);
mActionFilePrint->setShortcut(tr("Ctrl+P"));
mActionFilePrint->setStatusTip(tr("Print"));
connect(mActionFilePrint, SIGNAL(triggered()), this, SLOT(filePrint()));
//
mActionSaveMapAsImage= new QAction(QIcon(myIconPath+"/mActionSaveMapAsImage.png"), tr("Save as Image..."), this);
mActionSaveMapAsImage->setShortcut(tr("I"));
mActionSaveMapAsImage->setStatusTip(tr("Save map as image"));
connect(mActionSaveMapAsImage, SIGNAL(triggered()), this, SLOT(saveMapAsImage()));
//
mActionExportMapServer= new QAction(QIcon(myIconPath+"/mActionExportMapServer.png"), tr("Export to MapServer Map..."), this);
mActionExportMapServer->setShortcut(tr("M"));
mActionExportMapServer->setStatusTip(tr("Export as MapServer .map file"));
connect(mActionExportMapServer, SIGNAL(triggered()), this, SLOT(exportMapServer()));
//
mActionFileExit= new QAction(QIcon(myIconPath+"/mActionFileExit.png"), tr("Exit"), this);
mActionFileExit->setShortcut(tr("Ctrl+Q"));
mActionFileExit->setStatusTip(tr("Exit QGIS"));
connect(mActionFileExit, SIGNAL(triggered()), this, SLOT(fileExit()));
//
// Layer Menu Related Items
//
mActionAddNonDbLayer= new QAction(QIcon(myIconPath+"/mActionAddNonDbLayer.png"), tr("Add a Vector Layer..."), this);
mActionAddNonDbLayer->setShortcut(tr("V"));
mActionAddNonDbLayer->setStatusTip(tr("Add a Vector Layer"));
connect(mActionAddNonDbLayer, SIGNAL(triggered()), this, SLOT(addLayer()));
//
mActionAddRasterLayer= new QAction(QIcon(myIconPath+"/mActionAddRasterLayer.png"), tr("Add a Raster Layer..."), this);
mActionAddRasterLayer->setShortcut(tr("R"));
mActionAddRasterLayer->setStatusTip(tr("Add a Raster Layer"));
assert(connect(mActionAddRasterLayer, SIGNAL(triggered()), this, SLOT(addRasterLayer())));
//
mActionAddLayer= new QAction(QIcon(myIconPath+"/mActionAddLayer.png"), tr("Add a PostGIS Layer..."), this);
mActionAddLayer->setShortcut(tr("D"));
mActionAddLayer->setStatusTip(tr("Add a PostGIS Layer"));
//#ifdef HAVE_POSTGRESQL
// std::cout << "HAVE_POSTGRESQL is defined" << std::endl;
// assert(0);
//#else
// std::cout << "HAVE_POSTGRESQL not defined" << std::endl;
// assert(0);
//#endif
assert(connect(mActionAddLayer, SIGNAL(triggered()), this, SLOT(addDatabaseLayer())));
//
mActionNewVectorLayer= new QAction(QIcon(myIconPath+"/mActionNewVectorLayer.png"), tr("New Vector Layer..."), this);
mActionNewVectorLayer->setShortcut(tr("N"));
mActionNewVectorLayer->setStatusTip(tr("Create a New Vector Layer"));
connect(mActionNewVectorLayer, SIGNAL(triggered()), this, SLOT(newVectorLayer()));
//
mActionRemoveLayer= new QAction(QIcon(myIconPath+"/mActionRemoveLayer.png"), tr("Remove Layer"), this);
mActionRemoveLayer->setShortcut(tr("Ctrl+D"));
mActionRemoveLayer->setStatusTip(tr("Remove a Layer"));
connect(mActionRemoveLayer, SIGNAL(triggered()), this, SLOT(removeLayer()));
//
mActionAddAllToOverview= new QAction(QIcon(myIconPath+"/mActionAddAllToOverview.png"), tr("Add All To Overview"), this);
mActionAddAllToOverview->setShortcut(tr("+"));
mActionAddAllToOverview->setStatusTip(tr("Show all layers in the overview map"));
connect(mActionAddAllToOverview, SIGNAL(triggered()), this, SLOT(addAllToOverview()));
//
mActionRemoveAllFromOverview= new QAction(QIcon(myIconPath+"/mActionRemoveAllFromOverview.png"), tr("Remove All From Overview"), this);
mActionRemoveAllFromOverview->setShortcut(tr("-"));
mActionRemoveAllFromOverview->setStatusTip(tr("Remove all layers from overview map"));
connect(mActionRemoveAllFromOverview, SIGNAL(triggered()), this, SLOT(removeAllFromOverview()));
//
mActionShowAllLayers= new QAction(QIcon(myIconPath+"/mActionShowAllLayers.png"), tr("Show All Layers"), this);
mActionShowAllLayers->setShortcut(tr("S"));
mActionShowAllLayers->setStatusTip(tr("Show all layers"));
connect(mActionShowAllLayers, SIGNAL(triggered()), this, SLOT(showAllLayers()));
//
mActionHideAllLayers= new QAction(QIcon(myIconPath+"/mActionHideAllLayers.png"), tr("Hide All Layers"), this);
mActionHideAllLayers->setShortcut(tr("H"));
mActionHideAllLayers->setStatusTip(tr("Hide all layers"));
connect(mActionHideAllLayers, SIGNAL(triggered()), this, SLOT(hideAllLayers()));
//
// Settings Menu Related Items
//
mActionProjectProperties= new QAction(QIcon(myIconPath+"/mActionProjectProperties.png"), tr("Project Properties..."), this);
mActionProjectProperties->setShortcut(tr("Alt+P"));
mActionProjectProperties->setStatusTip(tr("Set project properties"));
connect(mActionProjectProperties, SIGNAL(triggered()), this, SLOT(projectProperties()));
//
mActionOptions= new QAction(QIcon(myIconPath+"/mActionOptions.png"), tr("Options..."), this);
mActionOptions->setShortcut(tr("Alt+O"));
mActionOptions->setStatusTip(tr("Change various QGIS options"));
connect(mActionOptions, SIGNAL(triggered()), this, SLOT(options()));
//
mActionCustomProjection= new QAction(QIcon(myIconPath+"/mActionCustomProjection.png"), tr("Custom Projection..."), this);
mActionCustomProjection->setShortcut(tr("Alt+I"));
mActionCustomProjection->setStatusTip(tr("Manage custom projections"));
connect(mActionCustomProjection, SIGNAL(triggered()), this, SLOT(customProjection()));
//
// Help Menu Related items
//
mActionHelpContents= new QAction(QIcon(myIconPath+"/mActionHelpContents.png"), tr("Help Contents"), this);
mActionHelpContents->setShortcut(tr("F1"));
mActionHelpContents->setStatusTip(tr("Help Documentation"));
connect(mActionHelpContents, SIGNAL(triggered()), this, SLOT(helpContents()));
//
mActionQgisHomePage= new QAction(QIcon(myIconPath+"/mActionQgisHomePage.png"), tr("Qgis Home Page"), this);
mActionQgisHomePage->setShortcut(tr("Ctrl+H"));
mActionQgisHomePage->setStatusTip(tr("QGIS Home Page"));
connect(mActionQgisHomePage, SIGNAL(triggered()), this, SLOT(helpQgisHomePage()));
//
mActionQgisSourceForgePage= new QAction(QIcon(myIconPath+"/mActionQgisSourceForgePage.png"), tr("Qgis Sourceforge"), this);
mActionQgisSourceForgePage->setShortcut(tr("Alt+H"));
mActionQgisSourceForgePage->setStatusTip(tr("Visit QGIS SourceForge page"));
connect(mActionQgisSourceForgePage, SIGNAL(triggered()), this, SLOT(helpQgisSourceForge()));
//
mActionHelpAbout= new QAction(QIcon(myIconPath+"/mActionHelpAbout.png"), tr("About"), this);
mActionHelpAbout->setStatusTip(tr("About QGIS"));
connect(mActionHelpAbout, SIGNAL(triggered()), this, SLOT(about()));
//
mActionCheckQgisVersion= new QAction(QIcon(myIconPath+"/mActionCheckQgisVersion.png"), tr("Check Qgis Version"), this);
mActionCheckQgisVersion->setStatusTip(tr("Check if your QGIS version is up to date (requires internet access)"));
connect(mActionCheckQgisVersion, SIGNAL(triggered()), this, SLOT(checkQgisVersion()));
//
// View Menu Items
//
mActionDraw= new QAction(QIcon(myIconPath+"/mActionDraw.png"), tr("Refresh"), this);
mActionDraw->setShortcut(tr("Ctrl+R"));
mActionDraw->setStatusTip(tr("Refresh Map"));
connect(mActionDraw, SIGNAL(triggered()), this, SLOT(refreshMapCanvas()));
//
mActionZoomIn= new QAction(QIcon(myIconPath+"/mActionZoomIn.png"), tr("Zoom In"), this);
mActionZoomIn->setShortcut(tr("z"));
mActionZoomIn->setStatusTip(tr("Zoom In"));
connect(mActionZoomIn, SIGNAL(triggered()), this, SLOT(zoomIn()));
//
mActionZoomOut= new QAction(QIcon(myIconPath+"/mActionZoomOut.png"), tr("Zoom Out"), this);
mActionZoomOut->setShortcut(tr("Z"));
mActionZoomOut->setStatusTip(tr("Zoom Out"));
connect(mActionZoomOut, SIGNAL(triggered()), this, SLOT(zoomOut()));
//
mActionZoomFullExtent= new QAction(QIcon(myIconPath+"/mActionZoomFullExtent.png"), tr("Zoom Full"), this);
mActionZoomFullExtent->setShortcut(tr("f"));
mActionZoomFullExtent->setStatusTip(tr("Zoom to Full Extents"));
connect(mActionZoomFullExtent, SIGNAL(triggered()), this, SLOT(zoomFull()));
//
mActionZoomToSelected= new QAction(QIcon(myIconPath+"/mActionZoomToSelected.png"), tr("Zoom To Selection"), this);
mActionZoomToSelected->setShortcut(tr("F"));
mActionZoomToSelected->setStatusTip(tr("Zoom to selection"));
connect(mActionZoomToSelected, SIGNAL(triggered()), this, SLOT(zoomToSelected()));
//
mActionPan= new QAction(QIcon(myIconPath+"/mActionPan.png"), tr("Pan Map"), this);
mActionPan->setStatusTip(tr("Pan the map"));
connect(mActionPan, SIGNAL(triggered()), this, SLOT(pan()));
//
mActionZoomLast= new QAction(QIcon(myIconPath+"/mActionZoomLast.png"), tr("Zoom Last"), this);
//mActionZoomLast->setShortcut(tr("Ctrl+O"));
mActionZoomLast->setStatusTip(tr("Zoom to Last Extent"));
connect(mActionZoomLast, SIGNAL(triggered()), this, SLOT(zoomPrevious()));
//
mActionZoomToLayer= new QAction(QIcon(myIconPath+"/mActionZoomToLayer.png"), tr("Zoom To Layer"), this);
//mActionZoomToLayer->setShortcut(tr("Ctrl+O"));
mActionZoomToLayer->setStatusTip(tr("Zoom to Layer"));
connect(mActionZoomToLayer, SIGNAL(triggered()), this, SLOT(zoomToLayerExtent()));
//
mActionIdentify= new QAction(QIcon(myIconPath+"/mActionIdentify.png"), tr("Identify Features"), this);
mActionIdentify->setShortcut(tr("I"));
mActionIdentify->setStatusTip(tr("Click on features to identify them"));
connect(mActionIdentify, SIGNAL(triggered()), this, SLOT(identify()));
//
mActionSelect= new QAction(QIcon(myIconPath+"/mActionSelect.png"), tr("Select Features"), this);
mActionSelect->setStatusTip(tr("Select Features"));
connect(mActionSelect, SIGNAL(triggered()), this, SLOT(select()));
//
mActionOpenTable= new QAction(QIcon(myIconPath+"/mActionOpenTable.png"), tr("Open Table"), this);
//mActionOpenTable->setShortcut(tr("Ctrl+O"));
mActionOpenTable->setStatusTip(tr("Open Table"));
connect(mActionOpenTable, SIGNAL(triggered()), this, SLOT(attributeTable()));
//
mActionMeasure= new QAction(QIcon(myIconPath+"/mActionMeasure.png"), tr("Measure Line "), this);
mActionMeasure->setShortcut(tr("Ctrl+M"));
mActionMeasure->setStatusTip(tr("Measure a Line"));
connect(mActionMeasure, SIGNAL(triggered()), this, SLOT(measure()));
//
mActionMeasureArea= new QAction(QIcon(myIconPath+"/mActionMeasureArea.png"), tr("Measure Area"), this);
mActionMeasureArea->setShortcut(tr("Alt+M"));
mActionMeasureArea->setStatusTip(tr("Measure an Area"));
connect(mActionMeasureArea, SIGNAL(triggered()), this, SLOT(measureArea()));
//
mActionShowBookmarks= new QAction(QIcon(myIconPath+"/mActionShowBookmarks.png"), tr("Show Bookmarks"), this);
mActionShowBookmarks->setShortcut(tr("Ctrl+B"));
mActionShowBookmarks->setStatusTip(tr("Show Bookmarks"));
connect(mActionShowBookmarks, SIGNAL(triggered()), this, SLOT(showBookmarks()));
//
mActionNewBookmark= new QAction(QIcon(myIconPath+"/mActionNewBookmark.png"), tr("New Bookmark..."), this);
mActionNewBookmark->setShortcut(tr("Alt+B"));
mActionNewBookmark->setStatusTip(tr("New Bookmark"));
connect(mActionNewBookmark, SIGNAL(triggered()), this, SLOT(newBookmark()));
//
mActionAddWmsLayer= new QAction(QIcon(myIconPath+"/mActionAddWmsLayer.png"), tr("Add WMS Layer..."), this);
mActionAddWmsLayer->setShortcut(tr("Ctrl+M"));
mActionAddWmsLayer->setStatusTip(tr("Add Web Mapping Server Layer"));
connect(mActionAddWmsLayer, SIGNAL(triggered()), this, SLOT(addWmsLayer()));
//
mActionInOverview= new QAction(QIcon(myIconPath+"/mActionInOverview.png"), tr("In Overview"), this);
mActionInOverview->setShortcut(tr("Alt+O"));
mActionInOverview->setStatusTip(tr("Add current layer to overview map"));
connect(mActionInOverview, SIGNAL(triggered()), this, SLOT(inOverview()));
//
// Plugin Menu Related Items
//
mActionShowPluginManager= new QAction(QIcon(myIconPath+"/mActionShowPluginManager.png"), tr("Plugin Manager..."), this);
mActionShowPluginManager->setShortcut(tr("Ctrl+P"));
mActionShowPluginManager->setStatusTip(tr("Open the plugin manager"));
connect(mActionShowPluginManager, SIGNAL(triggered()), this, SLOT(showPluginManager()));
//
// Add the whats this toolbar button
// QWhatsThis::whatsThisButton(mHelpToolBar);
//
//
// Digitising Toolbar Items
//
mActionCapturePoint= new QAction(QIcon(myIconPath+"/mActionCapturePoint.png"), tr("Capture Point"), this);
mActionCapturePoint->setShortcut(tr("."));
mActionCapturePoint->setStatusTip(tr("Capture Points"));
connect(mActionCapturePoint, SIGNAL(triggered()), this, SLOT(capturePoint()));
//
mActionCaptureLine= new QAction(QIcon(myIconPath+"/mActionCaptureLine.png"), tr("Capture Line"), this);
mActionCaptureLine->setShortcut(tr("/"));
mActionCaptureLine->setStatusTip(tr("Capture Lines"));
connect(mActionCaptureLine, SIGNAL(triggered()), this, SLOT(captureLine()));
//
mActionCapturePolygon= new QAction(QIcon(myIconPath+"/mActionCapturePolygon.png"), tr("Capture Polygon"), this);
mActionCapturePolygon->setShortcut(tr("Ctrl+/"));
mActionCapturePolygon->setStatusTip(tr("Capture Polygons"));
connect(mActionCapturePolygon, SIGNAL(triggered()), this, SLOT(capturePolygon()));
//
mActionDeleteSelected = new QAction(QIcon(myIconPath+"/mActionDeleteSelected.png"), tr("Delete Seleced"), this);
mActionDeleteSelected->setStatusTip(tr("Delete Selected"));
connect(mActionDeleteSelected, SIGNAL(triggered()), this, SLOT(deleteSelected()));
//
mActionAddVertex = new QAction(QIcon(myIconPath+"/mActionAddVertex.png"), tr("Add Vertex"), this);
mActionAddVertex->setStatusTip(tr("Add Vertex"));
connect(mActionAddVertex, SIGNAL(triggered()), this, SLOT(addVertex()));
//
mActionDeleteVertex = new QAction(QIcon(myIconPath+"/mActionDeleteVertex.png"), tr("Delete Vertex"), this);
mActionDeleteVertex->setStatusTip(tr("Delete Vertex"));
connect(mActionDeleteVertex, SIGNAL(triggered()), this, SLOT(deleteVertex()));
//
mActionMoveVertex = new QAction(QIcon(myIconPath+"/mActionMoveVertex.png"), tr("Move Vertex"), this);
mActionMoveVertex->setStatusTip(tr("Move Vertex"));
connect(mActionMoveVertex, SIGNAL(triggered()), this, SLOT(moveVertex()));
}
void QgisApp::createActionGroups()
{
//
// Map Tool Group
mMapToolGroup = new QActionGroup(this);
mActionPan->setCheckable(true);
mMapToolGroup->addAction(mActionPan);
mActionZoomIn->setCheckable(true);
mMapToolGroup->addAction(mActionZoomIn);
mActionZoomOut->setCheckable(true);
mMapToolGroup->addAction(mActionZoomOut);
mActionIdentify->setCheckable(true);
mMapToolGroup->addAction(mActionIdentify);
mActionSelect->setCheckable(true);
mMapToolGroup->addAction(mActionSelect);
mActionMeasure->setCheckable(true);
mMapToolGroup->addAction(mActionMeasure);
mActionMeasureArea->setCheckable(true);
mMapToolGroup->addAction(mActionMeasureArea);
mActionCaptureLine->setCheckable(true);
mMapToolGroup->addAction(mActionCaptureLine);
mActionCapturePoint->setCheckable(true);
mMapToolGroup->addAction(mActionCapturePoint);
mActionCapturePolygon->setCheckable(true);
mMapToolGroup->addAction(mActionCapturePolygon);
mMapToolGroup->addAction(mActionDeleteSelected);
mActionAddVertex->setCheckable(true);
mMapToolGroup->addAction(mActionAddVertex);
mActionDeleteVertex->setCheckable(true);
mMapToolGroup->addAction(mActionDeleteVertex);
mActionMoveVertex->setCheckable(true);
mMapToolGroup->addAction(mActionMoveVertex);
}
void QgisApp::createMenus()
{
//
// File Menu
mFileMenu = menuBar()->addMenu(tr("&File"));
mFileMenu->addAction(mActionFileNew);
mFileMenu->addAction(mActionFileOpen);
mRecentProjectsMenu = mFileMenu->addMenu("&Open Recent Projects");
// Connect once for the entire submenu.
connect(mRecentProjectsMenu, SIGNAL(triggered(QAction *)),
this, SLOT(openProject(QAction *)));
mFileMenu->addSeparator();
mFileMenu->addAction(mActionFileSave);
mFileMenu->addAction(mActionFileSaveAs);
mFileMenu->addAction(mActionSaveMapAsImage);
mFileMenu->addAction(mActionExportMapServer);
mFileMenu->addAction(mActionFilePrint);
mFileMenu->addSeparator();
mFileMenu->addAction(mActionFileExit);
//
// View Menu
mViewMenu = menuBar()->addMenu(tr("&View"));
mViewMenu->addAction(mActionZoomFullExtent);
mViewMenu->addAction(mActionZoomToSelected);
mViewMenu->addAction(mActionZoomToLayer);
mViewMenu->addAction(mActionZoomLast);
mViewMenu->addAction(mActionDraw);
mViewMenu->addAction(mActionShowBookmarks);
mViewMenu->addAction(mActionNewBookmark);
//
// Layers Menu
mLayerMenu = menuBar()->addMenu(tr("&Layer"));
mLayerMenu->addAction(mActionAddNonDbLayer);
mLayerMenu->addAction(mActionAddRasterLayer);
#ifdef HAVE_POSTGRESQL
mLayerMenu->addAction(mActionAddLayer);
#endif
mLayerMenu->addAction(mActionAddWmsLayer);
mLayerMenu->addAction(mActionRemoveLayer);
mLayerMenu->addAction(mActionNewVectorLayer);
mLayerMenu->addAction(mActionInOverview);
mLayerMenu->addAction(mActionAddAllToOverview);
mLayerMenu->addAction(mActionRemoveAllFromOverview);
mLayerMenu->addAction(mActionHideAllLayers);
mLayerMenu->addAction(mActionShowAllLayers);
//
// Settings Menu
mSettingsMenu = menuBar()->addMenu(tr("&Settings"));
mSettingsMenu->addAction(mActionProjectProperties);
mSettingsMenu->addAction(mActionCustomProjection);
mSettingsMenu->addAction(mActionOptions);
//
// Plugins Menu
mPluginMenu = menuBar()->addMenu(tr("&Plugins"));
mPluginMenu->addAction(mActionShowPluginManager);
// Add the plugin manager action to it
//actionPluginManager->addTo(mPluginMenu);
// Add separator. Plugins will add their menus to this
// menu when they are loaded by the plugin manager
//mPluginMenu->insertSeparator();
// Add to the menubar
//menuBar()->insertItem(tr("&Plugins"), mPluginMenu, -1, menuBar()->count() - 1);
menuBar()->addSeparator();
mHelpMenu = menuBar()->addMenu(tr("&Help"));
mHelpMenu->addAction(mActionHelpContents);
mHelpMenu->addAction(mActionQgisHomePage);
mHelpMenu->addAction(mActionQgisSourceForgePage);
mHelpMenu->addAction(mActionCheckQgisVersion);
mHelpMenu->addAction(mActionHelpAbout);
}
void QgisApp::createToolBars()
{
// Note: we need to set each object name to ensure that
// qmainwindow::saveState and qmainwindow::restoreState
// work properly
//
// File Toolbar
mFileToolBar = addToolBar(tr("File"));
mFileToolBar->setIconSize(QSize(24,24));
mFileToolBar->setObjectName("FileToolBar");
mFileToolBar->addAction(mActionFileNew);
mFileToolBar->addAction(mActionFileNew);
mFileToolBar->addAction(mActionFileSave);
mFileToolBar->addAction(mActionFileSaveAs);
mFileToolBar->addAction(mActionFileOpen);
mFileToolBar->addAction(mActionFilePrint);
//
// Layer Toolbar
mLayerToolBar = addToolBar(tr("Manage Layers"));
mLayerToolBar->setIconSize(QSize(24,24));
mLayerToolBar->setObjectName("LayerToolBar");
mLayerToolBar->addAction(mActionAddNonDbLayer);
mLayerToolBar->addAction(mActionAddRasterLayer);
#ifdef HAVE_POSTGRESQL
mLayerToolBar->addAction(mActionAddLayer);
#endif
mLayerToolBar->addAction(mActionAddWmsLayer);
mLayerToolBar->addAction(mActionNewVectorLayer);
mLayerToolBar->addAction(mActionRemoveLayer);
mLayerToolBar->addAction(mActionInOverview);
mLayerToolBar->addAction(mActionAddAllToOverview);
mLayerToolBar->addAction(mActionRemoveAllFromOverview);
mLayerToolBar->addAction(mActionShowAllLayers);
mLayerToolBar->addAction(mActionHideAllLayers);
//
// Help Toolbar
mHelpToolBar = addToolBar(tr("Help"));
mHelpToolBar->setIconSize(QSize(24,24));
mHelpToolBar->setObjectName("Help");
mHelpToolBar->addAction(mActionHelpContents);
//
// Digitizing Toolbar
mDigitizeToolBar = addToolBar(tr("Digitizing"));
mDigitizeToolBar->setIconSize(QSize(24,24));
mDigitizeToolBar->setObjectName("Digitizing");
mDigitizeToolBar->addAction(mActionCapturePoint);
mDigitizeToolBar->addAction(mActionCaptureLine);
mDigitizeToolBar->addAction(mActionCapturePolygon);
mDigitizeToolBar->addAction(mActionDeleteSelected);
mDigitizeToolBar->addAction(mActionAddVertex);
mDigitizeToolBar->addAction(mActionDeleteVertex);
mDigitizeToolBar->addAction(mActionMoveVertex);
//
// Map Navigation Toolbar
mMapNavToolBar = addToolBar(tr("Map Navigation"));
mMapNavToolBar->setIconSize(QSize(24,24));
mMapNavToolBar->setObjectName("Map Navigation");
mMapNavToolBar->addAction(mActionPan);
mMapNavToolBar->addAction(mActionZoomIn);
mMapNavToolBar->addAction(mActionZoomOut);
mMapNavToolBar->addAction(mActionZoomFullExtent);
mMapNavToolBar->addAction(mActionZoomToSelected);
mMapNavToolBar->addAction(mActionZoomToLayer);
mMapNavToolBar->addAction(mActionZoomLast);
mMapNavToolBar->addAction(mActionDraw);
//
// Attributes Toolbar
mAttributesToolBar = addToolBar(tr("Attributes"));
mAttributesToolBar->setIconSize(QSize(24,24));
mAttributesToolBar->setObjectName("Attributes");
mAttributesToolBar->addAction(mActionIdentify);
mAttributesToolBar->addAction(mActionSelect);
mAttributesToolBar->addAction(mActionOpenTable);
mAttributesToolBar->addAction(mActionMeasure);
mAttributesToolBar->addAction(mActionMeasureArea);
mAttributesToolBar->addAction(mActionShowBookmarks);
mAttributesToolBar->addAction(mActionNewBookmark);
//
// Plugins Toolbar
mPluginToolBar = addToolBar(tr("Plugins"));
mPluginToolBar->setIconSize(QSize(24,24));
mPluginToolBar->setObjectName("Plugins");
}
void QgisApp::createStatusBar()
{
//
// Add a panel to the status bar for the scale, coords and progress
// And also rendering suppression checkbox
//
mProgressBar = new QProgressBar(statusBar());
mProgressBar->setMaximumWidth(100);
mProgressBar->hide();
QWhatsThis::add(mProgressBar, tr("Progress bar that displays the status of rendering layers and other time-intensive operations"));
statusBar()->addWidget(mProgressBar, 1,true);
// Bumped the font up one point size since 8 was too
// small on some platforms. A point size of 9 still provides
// plenty of display space on 1024x768 resolutions
QFont myFont( "Arial", 9 );
statusBar()->setFont(myFont);
mScaleLabel = new QLabel(QString("Scale"),statusBar());
mScaleLabel->setFont(myFont);
mScaleLabel->setMinimumWidth(10);
mScaleLabel->setMargin(3);
mScaleLabel->setAlignment(Qt::AlignCenter);
QWhatsThis::add(mScaleLabel, tr("Displays the current map scale"));
statusBar()->addWidget(mScaleLabel, 0,true);
//coords status bar widget
mCoordsLabel = new QLabel(QString("Coordinates:"), statusBar());
mCoordsLabel->setMinimumWidth(10);
mCoordsLabel->setFont(myFont);
mCoordsLabel->setMargin(3);
mCoordsLabel->setAlignment(Qt::AlignCenter);
QWhatsThis::add(mCoordsLabel, tr("Shows the map coordinates at the current cursor postion. The display is continuously updated as the mouse is moved."));
statusBar()->addWidget(mCoordsLabel, 0, true);
// render suppression status bar widget
mRenderSuppressionCBox = new QCheckBox(tr("Render"),statusBar());
mRenderSuppressionCBox->setChecked(true);
mRenderSuppressionCBox->setFont(myFont);
QWhatsThis::add(mRenderSuppressionCBox, tr("When checked, the map layers are rendered in response to map navigation commands and other events. When not checked, no rendering is done. This allows you to add a large number of layers and symbolize them before rendering."));
QToolTip::add( mRenderSuppressionCBox, tr("Toggle map rendering") );
statusBar()->addWidget(mRenderSuppressionCBox,0,true);
// On the fly projection status bar icon
// Changed this to a tool button since a QPushButton is
// sculpted on OS X and the icon is never displayed [gsherman]
mOnTheFlyProjectionStatusButton = new QToolButton(statusBar());
mOnTheFlyProjectionStatusButton->setMaximumWidth(20);
// Maintain uniform widget height in status bar by setting button height same as labels
// For Qt/Mac 3.3, the default toolbutton height is 30 and labels were expanding to match
mOnTheFlyProjectionStatusButton->setMaximumHeight(mScaleLabel->height());
QPixmap myProjPixmap;
QString myIconPath = QgsApplication::themePath();
myProjPixmap.load(myIconPath+"/mIconProjectionDisabled.png");
mOnTheFlyProjectionStatusButton->setPixmap(myProjPixmap);
assert(!myProjPixmap.isNull());
QWhatsThis::add(mOnTheFlyProjectionStatusButton, tr("This icon shows whether on the fly projection is enabled or not. Click the icon to bring up the project properties dialog to alter this behaviour."));
QToolTip::add( mOnTheFlyProjectionStatusButton, tr("Projection status - Click to open projection dialog"));
connect(mOnTheFlyProjectionStatusButton, SIGNAL(clicked()),
this, SLOT(projectPropertiesProjections()));//bring up the project props dialog when clicked
statusBar()->addWidget(mOnTheFlyProjectionStatusButton,0,true);
statusBar()->showMessage(tr("Ready"));
}
QString QgisApp::themePath()
{
return mAppDir +"/share/qgis/themes/" + mThemeName + "/";
}
void QgisApp::setTheme(QString theThemeName)
{
/*****************************************************************
// Init the toolbar icons by setting the icon for each action.
// All toolbar/menu items must be a QAction in order for this
// to work.
//
// When new toolbar/menu QAction objects are added to the interface,
// add an entry below to set the icon
//
// PNG names must match those defined for the default theme. The
// default theme is installed in <prefix>/share/qgis/themes/default.
//
// New core themes can be added by creating a subdirectory under src/themes
// and modifying the appropriate Makefile.am files. User contributed themes
// will be installed directly into <prefix>/share/qgis/themes/<themedir>.
//
// Themes can be selected from the preferences dialog. The dialog parses
// the themes directory and builds a list of themes (ie subdirectories)
// for the user to choose from.
//
// TODO: Check as each icon is grabbed and if it doesn't exist, use the
// one from the default theme (which is installed with qgis and should
// always be good)
*/
QgsApplication::selectTheme(theThemeName);
QString myIconPath = QgsApplication::themePath();
mActionFileNew->setIconSet(QIcon(QPixmap(myIconPath + "/mActionFileNew.png")));
mActionFileSave->setIconSet(QIcon(QPixmap(myIconPath + "/mActionFileSave.png")));
mActionFileSaveAs->setIconSet(QIcon(QPixmap(myIconPath + "/mActionFileSaveAs.png")));
mActionFileOpen->setIconSet(QIcon(QPixmap(myIconPath + "/mActionFileOpen.png")));
mActionFilePrint->setIconSet(QIcon(QPixmap(myIconPath + "/mActionFilePrint.png")));
mActionSaveMapAsImage->setIconSet(QIcon(QPixmap(myIconPath + "/mActionSaveMapAsImage.png")));
mActionExportMapServer->setIconSet(QIcon(QPixmap(myIconPath + "/mActionExportMapServer.png")));
mActionFileExit->setIconSet(QIcon(QPixmap(myIconPath + "/mActionFileExit.png")));
mActionAddNonDbLayer->setIconSet(QIcon(QPixmap(myIconPath + "/mActionAddNonDbLayer.png")));
mActionAddRasterLayer->setIconSet(QIcon(QPixmap(myIconPath + "/mActionAddRasterLayer.png")));
mActionAddLayer->setIconSet(QIcon(QPixmap(myIconPath + "/mActionAddLayer.png")));
mActionRemoveLayer->setIconSet(QIcon(QPixmap(myIconPath + "/mActionRemoveLayer.png")));
mActionNewVectorLayer->setIconSet(QIcon(QPixmap(myIconPath + "/mActionNewVectorLayer.png")));
mActionAddAllToOverview->setIconSet(QIcon(QPixmap(myIconPath + "/mActionAddAllToOverview.png")));
mActionHideAllLayers->setIconSet(QIcon(QPixmap(myIconPath + "/mActionHideAllLayers.png")));
mActionShowAllLayers->setIconSet(QIcon(QPixmap(myIconPath + "/mActionShowAllLayers.png")));
mActionRemoveAllFromOverview->setIconSet(QIcon(QPixmap(myIconPath + "/mActionRemoveAllFromOverview.png")));
mActionProjectProperties->setIconSet(QIcon(QPixmap(myIconPath + "/mActionProjectProperties.png")));
mActionShowPluginManager->setIconSet(QIcon(QPixmap(myIconPath + "/mActionShowPluginManager.png")));
mActionCheckQgisVersion->setIconSet(QIcon(QPixmap(myIconPath + "/mActionCheckQgisVersion.png")));
mActionOptions->setIconSet(QIcon(QPixmap(myIconPath + "/mActionOptions.png")));
mActionHelpContents->setIconSet(QIcon(QPixmap(myIconPath + "/mActionHelpContents.png")));
mActionQgisHomePage->setIconSet(QIcon(QPixmap(myIconPath + "/mActionQgisHomePage.png")));
mActionQgisSourceForgePage->setIconSet(QIcon(QPixmap(myIconPath + "/mActionQgisSourceForgePage.png")));
mActionHelpAbout->setIconSet(QIcon(QPixmap(myIconPath + "/mActionHelpAbout.png")));
mActionDraw->setIconSet(QIcon(QPixmap(myIconPath + "/mActionDraw.png")));
mActionCapturePoint->setIconSet(QIcon(QPixmap(myIconPath + "/mActionCapturePoint.png")));
mActionCaptureLine->setIconSet(QIcon(QPixmap(myIconPath + "/mActionCaptureLine.png")));
mActionCapturePolygon->setIconSet(QIcon(QPixmap(myIconPath + "/mActionCapturePolygon.png")));
mActionZoomIn->setIconSet(QIcon(QPixmap(myIconPath + "/mActionZoomIn.png")));
mActionZoomOut->setIconSet(QIcon(QPixmap(myIconPath + "/mActionZoomOut.png")));
mActionZoomFullExtent->setIconSet(QIcon(QPixmap(myIconPath + "/mActionZoomFullExtent.png")));
mActionZoomToSelected->setIconSet(QIcon(QPixmap(myIconPath + "/mActionZoomToSelected.png")));
mActionPan->setIconSet(QIcon(QPixmap(myIconPath + "/mActionPan.png")));
mActionZoomLast->setIconSet(QIcon(QPixmap(myIconPath + "/mActionZoomLast.png")));
mActionZoomToLayer->setIconSet(QIcon(QPixmap(myIconPath + "/mActionZoomToLayer.png")));
mActionIdentify->setIconSet(QIcon(QPixmap(myIconPath + "/mActionIdentify.png")));
mActionSelect->setIconSet(QIcon(QPixmap(myIconPath + "/mActionSelect.png")));
mActionOpenTable->setIconSet(QIcon(QPixmap(myIconPath + "/mActionOpenTable.png")));
mActionMeasure->setIconSet(QIcon(QPixmap(myIconPath + "/mActionMeasure.png")));
mActionMeasureArea->setIconSet(QIcon(QPixmap(myIconPath + "/mActionMeasureArea.png")));
mActionShowBookmarks->setIconSet(QIcon(QPixmap(myIconPath + "/mActionShowBookmarks.png")));
mActionNewBookmark->setIconSet(QIcon(QPixmap(myIconPath + "/mActionNewBookmark.png")));
mActionCustomProjection->setIconSet(QIcon(QPixmap(myIconPath + "/mActionCustomProjection.png")));
mActionAddWmsLayer->setIconSet(QIcon(QPixmap(myIconPath + "/mActionAddWmsLayer.png")));
mActionInOverview->setIconSet(QIcon(QPixmap(myIconPath + "/mActionInOverview.png")));
}
void QgisApp::setupConnections()
{
// connect the "cleanup" slot
connect(qApp, SIGNAL(aboutToQuit()), this, SLOT(saveWindowState()));
//connect the legend, mapcanvas and overview canvas to the registry
// connect map layer registry signals to legend
connect(QgsMapLayerRegistry::instance(), SIGNAL(layerWillBeRemoved(QString)),
mMapLegend, SLOT(removeLayer(QString)));
connect(QgsMapLayerRegistry::instance(), SIGNAL(removedAll()),
mMapLegend, SLOT(removeAll()));
connect(QgsMapLayerRegistry::instance(), SIGNAL(layerWasAdded(QgsMapLayer*)),
mMapLegend, SLOT(addLayer(QgsMapLayer *)));
//signal when mouse moved over window (coords display in status bar)
connect(mMapCanvas, SIGNAL(xyCoordinates(QgsPoint &)), this, SLOT(showMouseCoordinate(QgsPoint &)));
//signal when mouse in capturePoint mode and mouse clicked on canvas
connect(mMapCanvas->mapRender(), SIGNAL(setProgress(int,int)), this, SLOT(showProgress(int,int)));
connect(mMapCanvas, SIGNAL(extentsChanged(QgsRect )),this,SLOT(showExtents(QgsRect )));
connect(mMapCanvas, SIGNAL(scaleChanged(QString)), this, SLOT(showScale(QString)));
connect(mMapCanvas, SIGNAL(scaleChanged(QString)), this, SLOT(updateMouseCoordinatePrecision()));
connect(mRenderSuppressionCBox, SIGNAL(toggled(bool )), mMapCanvas, SLOT(setRenderFlag(bool)));
}
void QgisApp::createCanvas()
{
// "theMapCanvas" used to find this canonical instance later
mMapCanvas = new QgsMapCanvas(NULL, "theMapCanvas" );
QWhatsThis::add(mMapCanvas, tr("Map canvas. This is where raster and vector layers are displayed when added to the map"));
mMapCanvas->setMinimumWidth(10);
QVBoxLayout *myCanvasLayout = new QVBoxLayout;