advanced digitizing tools

this integrates advanced digitizing tools aka CAD tools in QGIS application and basically a port of CADinput plugin
* new class QgsMapToolAdvancedDigitizing shall be subsclassed if adv. digit. tools could be used in a map tool
* QgsAdvancedDigitizingDockWidget handles the interaction with the user and also perform the constraints (filters events)
* QgsAdvancedDigitizingCanvasItem paints construction lines on the canvas

images/images.qrc

@@ -469,6 +469,12 @@
         <file>themes/default/mActionScaleHighlightFeature.svg</file>
         <file>themes/default/mActionPanHighlightFeature.svg</file>
         <file>flags/sr@latin.png</file>
+        <file>themes/default/cadtools/construction.png</file>
+        <file>themes/default/cadtools/delta.png</file>
+        <file>themes/default/cadtools/cad.png</file>
+        <file>themes/default/cadtools/lock.png</file>
+        <file>themes/default/cadtools/parallel.png</file>
+        <file>themes/default/cadtools/perpendicular.png</file>
     </qresource>
     <qresource prefix="/images/tips">
         <file alias="symbol_levels.png">qgis_tips/symbol_levels.png</file>

python/core/qgsmaptopixel.sip

@@ -64,6 +64,7 @@ class QgsMapToPixel
     QgsPoint toMapCoordinates( QPoint p ) const;
 
     QgsPoint toMapPoint( double x, double y ) const;
+
     /*! Set map units per pixel
     * @param mapUnitsPerPixel Map units per pixel
     */

src/app/CMakeLists.txt

@@ -14,6 +14,8 @@ SET(QGIS_APP_SRCS
   qgsattributetabledialog.cpp
   qgsbookmarks.cpp
   qgsbrowserdockwidget.cpp
+  qgsadvanceddigitizingdockwidget.cpp
+  qgsadvanceddigitizingcanvasitem.cpp
   qgsclipboard.cpp
   qgsconfigureshortcutsdialog.cpp
   qgscustomization.cpp
@@ -43,6 +45,7 @@ SET(QGIS_APP_SRCS
   qgslabelinggui.cpp
   qgslabelpreview.cpp
   qgsloadstylefromdbdialog.cpp
+  qgsmapmouseevent.cpp
   qgssavestyletodbdialog.cpp
   qgsguivectorlayertools.cpp
 
@@ -63,6 +66,7 @@ SET(QGIS_APP_SRCS
   qgsmaptoolshowhidelabels.cpp
   qgsmaptoolidentifyaction.cpp
   qgsmaptoollabel.cpp
+  qgsmaptooladvanceddigitizing.cpp
   qgsmaptoolmeasureangle.cpp
   qgsmaptoolmovefeature.cpp
   qgsmaptoolmovelabel.cpp
@@ -167,6 +171,7 @@ SET (QGIS_APP_MOC_HDRS
   qgsattributetabledialog.h
   qgsbookmarks.h
   qgsbrowserdockwidget.h
+  qgsadvanceddigitizingdockwidget.h
   qgsclipboard.h
   qgsconfigureshortcutsdialog.h
   qgscustomization.h
@@ -211,6 +216,7 @@ SET (QGIS_APP_MOC_HDRS
   qgsmaptoolpinlabels.h
   qgsmaptoolshowhidelabels.h
   qgsmaptoolidentifyaction.h
+  qgsmaptooladvanceddigitizing.h
   qgsmaptoolmeasureangle.h
   qgsmaptoolmovefeature.h
   qgsmaptoolmovelabel.h

src/app/qgisapp.cpp

@@ -104,6 +104,7 @@
 #include "qgsattributetabledialog.h"
 #include "qgsbookmarks.h"
 #include "qgsbrowserdockwidget.h"
+#include "qgsadvanceddigitizingdockwidget.h"
 #include "qgsclipboard.h"
 #include "qgscomposer.h"
 #include "qgscomposermanager.h"
@@ -582,6 +583,10 @@ QgisApp::QgisApp( QSplashScreen *splash, bool restorePlugins, QWidget * parent,
   mUndoWidget = new QgsUndoWidget( NULL, mMapCanvas );
   mUndoWidget->setObjectName( "Undo" );
 
+  // Advanced Digitizing dock
+  mAdvancedDigitizingDockWidget = new QgsAdvancedDigitizingDockWidget( mMapCanvas, this );
+  mAdvancedDigitizingDockWidget->setObjectName( "Cad" );
+
   createActions();
   createActionGroups();
   createMenus();
@@ -618,6 +623,9 @@ QgisApp::QgisApp( QSplashScreen *splash, bool restorePlugins, QWidget * parent,
   addDockWidget( Qt::LeftDockWidgetArea, mBrowserWidget2 );
   mBrowserWidget2->hide();
 
+  addDockWidget( Qt::LeftDockWidgetArea, mAdvancedDigitizingDockWidget );
+  mAdvancedDigitizingDockWidget->hide();
+
   // create the GPS tool on starting QGIS - this is like the browser
   mpGpsWidget = new QgsGPSInformationWidget( mMapCanvas );
   //create the dock widget
@@ -1627,6 +1635,11 @@ void QgisApp::createToolBars()
   actionWhatsThis->setIcon( QgsApplication::getThemeIcon( "/mActionWhatsThis.svg" ) );
   mHelpToolBar->addAction( actionWhatsThis );
 
+  // Cad toolbar
+  QAction* cadAction = mAdvancedDigitizingDockWidget->toggleViewAction();
+  cadAction->setText( tr( "Show CAD tools" ) );
+  cadAction->setIcon( QgsApplication::getThemeIcon( "/cadtools/cad.png" ) );
+  mAdvancedDigitizeToolBar->insertAction( mActionUndo, cadAction );
 }
 
 void QgisApp::createStatusBar()
@@ -4789,6 +4802,11 @@ void QgisApp::labeling()
   activateDeactivateLayerRelatedActions( vlayer );
 }
 
+void QgisApp::setCadDockVisible( bool visible )
+{
+  mAdvancedDigitizingDockWidget->setVisible( visible );
+}
+
 void QgisApp::fieldCalculator()
 {
   QgsVectorLayer *myLayer = qobject_cast<QgsVectorLayer *>( activeLayer() );

src/app/qgisapp.h

@@ -53,6 +53,7 @@ class QgsMapCanvas;
 class QgsMapLayer;
 class QgsMapTip;
 class QgsMapTool;
+class QgsMapToolAdvancedDigitizing;
 class QgsPoint;
 class QgsProviderRegistry;
 class QgsPythonUtils;
@@ -67,6 +68,7 @@ class QNetworkProxy;
 class QAuthenticator;
 
 class QgsBrowserDockWidget;
+class QgsAdvancedDigitizingDockWidget;
 class QgsSnappingDialog;
 class QgsGPSInformationWidget;
 
@@ -419,6 +421,9 @@ class APP_EXPORT QgisApp : public QMainWindow, private Ui::MainWindow
     QToolBar *databaseToolBar() { return mDatabaseToolBar; }
     QToolBar *webToolBar() { return mWebToolBar; }
 
+    //! return CAD dock widget
+    QgsAdvancedDigitizingDockWidget* cadDockWidget() { return mAdvancedDigitizingDockWidget; }
+
     //! show layer properties
     void showLayerProperties( QgsMapLayer *ml );
 
@@ -1083,6 +1088,9 @@ class APP_EXPORT QgisApp : public QMainWindow, private Ui::MainWindow
     //! shows label settings dialog (for labeling-ng)
     void labeling();
 
+    //! set the CAD dock widget visible
+    void setCadDockVisible( bool visible );
+
     /** Check if deprecated labels are used in project, and flag projects that use them */
     void checkForDeprecatedLabelsInProject();
 
@@ -1530,6 +1538,8 @@ class APP_EXPORT QgisApp : public QMainWindow, private Ui::MainWindow
     QgsBrowserDockWidget* mBrowserWidget;
     QgsBrowserDockWidget* mBrowserWidget2;
 
+    QgsAdvancedDigitizingDockWidget* mAdvancedDigitizingDockWidget;
+
     QgsSnappingDialog* mSnappingDialog;
 
     QgsPluginManager* mPluginManager;

src/app/qgisappinterface.cpp

@@ -32,6 +32,7 @@
 #include "qgscomposerview.h"
 #include "qgsmaplayer.h"
 #include "qgsmaplayerregistry.h"
+#include "qgsmaptooladvanceddigitizing.h"
 #include "qgsmapcanvas.h"
 #include "qgsproject.h"
 #include "qgslayertreeview.h"