[FEATURE]: move/rotate/change label edit tools to interactively chang…

…e data defined label properties

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@14697 c8812cc2-4d05-0410-92ff-de0c093fc19c

images/images.qrc

@@ -123,6 +123,7 @@
     <file>themes/default/mActionCaptureLine.png</file>
     <file>themes/default/mActionCapturePoint.png</file>
     <file>themes/default/mActionCapturePolygon.png</file>
+    <file>themes/default/mActionChangeLabelProperties.png</file>
     <file>themes/default/mActionCheckQgisVersion.png</file>
     <file>themes/default/mActionCollapseTree.png</file>
     <file>themes/default/mActionComposerManager.png</file>
@@ -168,6 +169,7 @@
     <file>themes/default/mActionMergeFeatures.png</file>
     <file>themes/default/mActionMergeFeatureAttributes.png</file>
     <file>themes/default/mActionMoveFeature.png</file>
+    <file>themes/default/mActionMoveLabel.png</file>
     <file>themes/default/mActionMoveItemContent.png</file>
     <file>themes/default/mActionMoveItemsToBottom.png</file>
     <file>themes/default/mActionMoveItemsToTop.png</file>
@@ -191,6 +193,7 @@
     <file>themes/default/mActionRemoveLayer.png</file>
     <file>themes/default/mActionRemoveSelectedFeature.png</file>
     <file>themes/default/mActionReshape.png</file>
+    <file>themes/default/mActionRotateLabel.png</file>
     <file>themes/default/mActionRotatePointSymbols.png</file>
     <file>themes/default/mActionSaveAsPDF.png</file>
     <file>themes/default/mActionSaveAsSVG.png</file>

python/core/qgsmaprenderer.sip

@@ -25,11 +25,32 @@ public:
   virtual void drawLabeling( QgsRenderContext& context ) = 0;
   //! called when we're done with rendering
   virtual void exit() = 0;
+  //! return infos about labels at a given (map) position
+  //! @note: this method was added in version 1.7
+  virtual QList<QgsLabelPosition> labelsAtPosition( const QgsPoint& p )= 0;
+
 
   //! called when passing engine among map renderers
   virtual QgsLabelingEngineInterface* clone() = 0;
 };
 
+struct QgsLabelPosition
+{
+%TypeHeaderCode
+#include <qgsmaprenderer.h>
+%End
+  QgsLabelPosition( int id, double r, const QVector< QgsPoint >& corners, const QgsRectangle& rect, double w, double h, const QString& layer, bool upside_down );
+  QgsLabelPosition();
+  int featureId;
+  double rotation;
+  QVector< QgsPoint > cornerPoints;
+  QgsRectangle labelRect;
+  double width;
+  double height;
+  QString layerID;
+  bool upsideDown;
+};
+
 
 /**
  * \class QgsMapRenderer

python/core/qgspoint.sip

@@ -77,6 +77,10 @@ public:
     @note added in QGIS 1.5*/
   double sqrDistToSegment( double x1, double y1, double x2, double y2, QgsPoint& minDistPoint /Out/) const;
 
+  /**Calculates azimut between this point and other one (clockwise in degree, starting from north)
+    @note: this function has been added in version 1.7*/
+  double azimuth( const QgsPoint& other );
+
   //! equality operator
   bool operator==(const QgsPoint &other);
 

src/app/CMakeLists.txt

@@ -28,6 +28,7 @@ SET(QGIS_APP_SRCS
   qgsidentifyresults.cpp
   qgsfeatureaction.cpp
   qgslabeldialog.cpp
+  qgslabelpropertydialog.cpp
   qgslabelengineconfigdialog.cpp
   qgslabelinggui.cpp
   qgslabelpreview.cpp
@@ -37,17 +38,21 @@ SET(QGIS_APP_SRCS
   qgsmaptooladdring.cpp
   qgsmaptoolannotation.cpp
   qgsmaptoolcapture.cpp
+  qgsmaptoolchangelabelproperties.cpp
   qgsmaptooldeletering.cpp
   qgsmaptooldeletepart.cpp
   qgsmaptooldeletevertex.cpp
   qgsmaptooledit.cpp
   qgsmaptoolformannotation.cpp
   qgsmaptoolidentify.cpp
+  qgsmaptoollabel.cpp
   qgsmaptoolmeasureangle.cpp
   qgsmaptoolmovefeature.cpp
+  qgsmaptoolmovelabel.cpp
   qgsmaptoolmovevertex.cpp
   qgsmaptoolnodetool.cpp
   qgsmaptoolreshape.cpp
+  qgsmaptoolrotatelabel.cpp
   qgsmaptoolrotatepointsymbols.cpp
   qgsmaptoolselect.cpp
   qgsmaptoolselectrectangle.cpp
@@ -175,6 +180,7 @@ SET (QGIS_APP_MOC_HDRS
   qgsidentifyresults.h
   qgsfeatureaction.h
   qgslabeldialog.h
+  qgslabelpropertydialog.h
   qgsmanageconnectionsdialog.h
   qgsmaptoolidentify.h
   qgsmaptoolsplitfeatures.h

src/app/qgisapp.cpp

@@ -212,6 +212,9 @@
 #include "qgsmaptoolzoom.h"
 #include "qgsmaptoolsimplify.h"
 #include "qgsmeasuretool.h"
+#include "qgsmaptoolmovelabel.h"
+#include "qgsmaptoolrotatelabel.h"
+#include "qgsmaptoolchangelabelproperties.h"
 
 //
 // Conditional Includes
@@ -580,6 +583,8 @@ QgisApp::~QgisApp()
   delete mMapTools.mDeletePart;
   delete mMapTools.mAddIsland;
   delete mMapTools.mNodeTool;
+  delete mMapTools.mMoveLabel;
+  delete mMapTools.mChangeLabelProperties;
 
   delete mPythonUtils;
 
@@ -1229,6 +1234,18 @@ void QgisApp::createActions()
   mActionAbout->setMenuRole( QAction::AboutRole ); // put in application menu on Mac OS X
   connect( mActionAbout, SIGNAL( triggered() ), this, SLOT( about() ) );
 
+  mActionMoveLabel = new QAction( getThemeIcon( "mActionMoveLabel.png" ), tr( "Move Label" ), this );
+  mActionMoveLabel->setStatusTip( tr( "Move labels interactively" ) );
+  connect( mActionMoveLabel, SIGNAL( triggered() ), this, SLOT( moveLabel() ) );
+
+  mActionRotateLabel = new QAction( getThemeIcon( "mActionRotateLabel.png" ), tr( "Rotate Label" ), this );
+  mActionRotateLabel->setStatusTip( tr( "Rotate labels interactively" ) );
+  connect( mActionRotateLabel, SIGNAL( triggered() ), this, SLOT( rotateLabel() ) );
+
+  mActionChangeLabelProperties = new QAction( getThemeIcon( "mActionChangeLabelProperties.png" ), tr( "Change label" ), this );
+  mActionChangeLabelProperties->setStatusTip( tr( "Change label properties" ) );
+  connect( mActionChangeLabelProperties, SIGNAL( triggered() ), this, SLOT( changeLabelProperties() ) );
+
   mActionStyleManagerV2 = new QAction( tr( "Style manager..." ), this );
   shortcuts->registerAction( mActionStyleManagerV2 );
   mActionStyleManagerV2->setStatusTip( tr( "Show style manager V2" ) );
@@ -1349,6 +1366,12 @@ void QgisApp::createActionGroups()
   mMapToolGroup->addAction( mActionNodeTool );
   mActionRotatePointSymbols->setCheckable( true );
   mMapToolGroup->addAction( mActionRotatePointSymbols );
+  mActionMoveLabel->setCheckable( true );
+  mMapToolGroup->addAction( mActionMoveLabel );
+  mActionRotateLabel->setCheckable( true );
+  mMapToolGroup->addAction( mActionRotateLabel );
+  mActionChangeLabelProperties->setCheckable( true );
+  mMapToolGroup->addAction( mActionChangeLabelProperties );
 }
 
 void QgisApp::createMenus()
@@ -1606,7 +1629,7 @@ void QgisApp::createMenus()
   // don't add it yet, wait for a plugin
   mDatabaseMenu = new QMenu( tr( "&Database" ) );
 
-  
+
   // Raster Menu
 
   mRasterMenu = menuBar()->addMenu( tr( "&Raster" ) );
@@ -1843,6 +1866,15 @@ void QgisApp::createToolBars()
   mHelpToolBar->addAction( mActionHelpContents );
   mHelpToolBar->addAction( QWhatsThis::createAction() );
   mToolbarMenu->addAction( mHelpToolBar->toggleViewAction() );
+
+  //Label Toolbar
+  mLabelToolBar = addToolBar( tr( "Label" ) );
+  mLabelToolBar->setIconSize( myIconSize );
+  mLabelToolBar->setObjectName( "Label" );
+  mLabelToolBar->addAction( mActionMoveLabel );
+  mLabelToolBar->addAction( mActionRotateLabel );
+  mLabelToolBar->addAction( mActionChangeLabelProperties );
+  mToolbarMenu->addAction( mLabelToolBar->toggleViewAction() );
 }
 
 void QgisApp::createStatusBar()
@@ -2245,6 +2277,12 @@ void QgisApp::createCanvasTools()
   mMapTools.mNodeTool->setAction( mActionNodeTool );
   mMapTools.mRotatePointSymbolsTool = new QgsMapToolRotatePointSymbols( mMapCanvas );
   mMapTools.mRotatePointSymbolsTool->setAction( mActionRotatePointSymbols );
+  mMapTools.mMoveLabel = new QgsMapToolMoveLabel( mMapCanvas );
+  mMapTools.mMoveLabel->setAction( mActionMoveLabel );
+  mMapTools.mRotateLabel = new QgsMapToolRotateLabel( mMapCanvas );
+  mMapTools.mRotateLabel->setAction( mActionRotateLabel );
+  mMapTools.mChangeLabelProperties = new QgsMapToolChangeLabelProperties( mMapCanvas );
+  mMapTools.mChangeLabelProperties->setAction( mActionChangeLabelProperties );
   //ensure that non edit tool is initialised or we will get crashes in some situations
   mNonEditMapTool = mMapTools.mPan;
 }
@@ -4250,6 +4288,21 @@ bool QgisApp::loadAnnotationItemsFromProject( const QDomDocument& doc )
   return true;
 }
 
+void QgisApp::moveLabel()
+{
+  mMapCanvas->setMapTool( mMapTools.mMoveLabel );
+}
+
+void QgisApp::rotateLabel()
+{
+  mMapCanvas->setMapTool( mMapTools.mRotateLabel );
+}
+
+void QgisApp::changeLabelProperties()
+{
+  mMapCanvas->setMapTool( mMapTools.mChangeLabelProperties );
+}
+
 QList<QgsAnnotationItem*> QgisApp::annotationItems()
 {
   QList<QgsAnnotationItem*> itemList;

src/app/qgisapp.h

@@ -757,6 +757,13 @@ class QgisApp : public QMainWindow
 
     bool loadAnnotationItemsFromProject( const QDomDocument& doc );
 
+    //! Activates the move label tool
+    void moveLabel();
+    //! Activates rotate label tool
+    void rotateLabel();
+    //! Activates label property tool
+    void changeLabelProperties();
+
   signals:
     /** emitted when a key is pressed and we want non widget sublasses to be able
       to pick up on this (e.g. maplayer) */
@@ -866,6 +873,7 @@ class QgisApp : public QMainWindow
     QToolBar *mAttributesToolBar;
     QToolBar *mPluginToolBar;
     QToolBar *mHelpToolBar;
+    QToolBar *mLabelToolBar;
 
     // actions for menus and toolbars -----------------
 
@@ -1002,6 +1010,10 @@ class QgisApp : public QMainWindow
     QAction *mActionHelpSeparator2;
     QAction *mActionAbout;
 
+    QAction *mActionMoveLabel;
+    QAction *mActionRotateLabel;
+    QAction *mActionChangeLabelProperties;
+
     QAction *mActionUseRendererV2;
     QAction *mActionStyleManagerV2;
 
@@ -1069,6 +1081,9 @@ class QgisApp : public QMainWindow
         QgsMapTool* mAnnotation;
         QgsMapTool* mFormAnnotation;
         QgsMapTool* mTextAnnotation;
+        QgsMapTool* mMoveLabel;
+        QgsMapTool* mRotateLabel;
+        QgsMapTool* mChangeLabelProperties;
     } mMapTools;
 
     QgsMapTool *mNonEditMapTool;

src/app/qgsmaptoolchangelabelproperties.cpp

@@ -0,0 +1,76 @@
+/***************************************************************************
+                          qgsmaptoolchangelabelproperties.cpp
+                          ---------------------------------
+    begin                : 2010-11-11
+    copyright            : (C) 2010 by Marco Hugentobler
+    email                : marco dot hugentobler at sourcepole dot ch
+***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   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.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+#include "qgsmaptoolchangelabelproperties.h"
+#include "qgslabelpropertydialog.h"
+#include "qgsmapcanvas.h"
+#include "qgsrubberband.h"
+#include "qgsvectorlayer.h"
+
+QgsMapToolChangeLabelProperties::QgsMapToolChangeLabelProperties( QgsMapCanvas* canvas ): QgsMapToolLabel( canvas )
+{
+}
+
+QgsMapToolChangeLabelProperties::~QgsMapToolChangeLabelProperties()
+{
+}
+
+void QgsMapToolChangeLabelProperties::canvasPressEvent( QMouseEvent * e )
+{
+  deleteRubberBands();
+
+  if ( !labelAtPosition( e, mCurrentLabelPos ) )
+  {
+    return;
+  }
+
+  QgsVectorLayer* vlayer = currentLayer();
+  if ( !vlayer || !vlayer->isEditable() )
+  {
+    return;
+  }
+
+  createRubberBands();
+}
+
+void QgsMapToolChangeLabelProperties::canvasReleaseEvent( QMouseEvent * e )
+{
+  QgsVectorLayer* vlayer = currentLayer();
+  if ( mLabelRubberBand && mCanvas && vlayer )
+  {
+    QgsLabelPropertyDialog d( mCurrentLabelPos.layerID, mCurrentLabelPos.featureId, mCanvas->mapRenderer() );
+    if ( d.exec() == QDialog::Accepted )
+    {
+      const QgsAttributeMap& changes = d.changedProperties();
+      if ( changes.size() > 0 )
+      {
+        vlayer->beginEditCommand( tr( "Label properties changed" ) );
+
+        QgsAttributeMap::const_iterator changeIt = changes.constBegin();
+        for ( ; changeIt != changes.constEnd(); ++changeIt )
+        {
+          vlayer->changeAttributeValue( mCurrentLabelPos.featureId, changeIt.key(), changeIt.value(), false );
+        }
+
+        vlayer->endEditCommand();
+        mCanvas->refresh();
+      }
+    }
+    deleteRubberBands();
+  }
+}
+

src/app/qgsmaptoolchangelabelproperties.h

@@ -0,0 +1,34 @@
+/***************************************************************************
+                          qgsmaptoolchangelabelproperties.h
+                          ---------------------------------
+    begin                : 2010-11-11
+    copyright            : (C) 2010 by Marco Hugentobler
+    email                : marco dot hugentobler at sourcepole dot ch
+***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   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.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+#ifndef QGSMAPTOOLCHANGELABELPROPERTIES_H
+#define QGSMAPTOOLCHANGELABELPROPERTIES_H
+
+#include "qgsmaptoollabel.h"
+
+class QgsMapToolChangeLabelProperties: public QgsMapToolLabel
+{
+  public:
+    QgsMapToolChangeLabelProperties( QgsMapCanvas* canvas );
+    ~QgsMapToolChangeLabelProperties();
+
+    virtual void canvasPressEvent( QMouseEvent * e );
+    virtual void canvasReleaseEvent( QMouseEvent * e );
+
+};
+
+#endif // QGSMAPTOOLCHANGELABEL_H