Applied patch from ticket #1522 for Zoom Next functionality.

gsherman · gsherman · commit 598677b882bc · 2009-04-18T00:02:22.000Z
Includes icons for zoom next tool (same icon for all themes). git-svn-id: http://svn.osgeo.org/qgis/trunk@10588 c8812cc2-4d05-0410-92ff-de0c093fc19c
diff --git a/images/themes/classic/mActionZoomNext.png b/images/themes/classic/mActionZoomNext.png
diff --git a/images/themes/default/mActionZoomNext.png b/images/themes/default/mActionZoomNext.png
diff --git a/images/themes/gis/mActionZoomNext.png b/images/themes/gis/mActionZoomNext.png
diff --git a/images/themes/nkids/mActionZoomNext.png b/images/themes/nkids/mActionZoomNext.png
diff --git a/python/gui/qgisinterface.sip b/python/gui/qgisinterface.sip
@@ -32,6 +32,8 @@ class QgisInterface : QObject
     virtual void zoomFull()=0;
     //! Zoom to previous view extent
     virtual void zoomToPrevious()=0;
+    //! Zoom to next view extent
+    virtual void zoomToNext()=0;
     //! Zoome to extent of the active layer
     virtual void zoomToActiveLayer()=0;
 
diff --git a/python/gui/qgsmapcanvas.sip b/python/gui/qgsmapcanvas.sip
@@ -90,6 +90,9 @@ class QgsMapCanvas : QGraphicsView
     //! Zoom to the previous extent (view)
     void zoomToPreviousExtent();
 
+    //! Zoom to the next extent (view)
+    void zoomToNextExtent();
+
     /**Zooms to the extend of the selected features*/
     void zoomToSelected();
 
diff --git a/src/app/qgisapp.cpp b/src/app/qgisapp.cpp
@@ -724,6 +724,10 @@ void QgisApp::createActions()
   mActionZoomLast->setStatusTip( tr( "Zoom to Last Extent" ) );
   connect( mActionZoomLast, SIGNAL( triggered() ), this, SLOT( zoomToPrevious() ) );
 
+  mActionZoomNext = new QAction( getThemeIcon( "mActionZoomNext.png" ), tr( "Zoom Next" ), this );
+  mActionZoomNext->setStatusTip( tr( "Zoom to Forward Extent" ) );
+  connect( mActionZoomNext, SIGNAL( triggered() ), this, SLOT( zoomToNext() ) );
+
   mActionZoomActualSize = new QAction( tr( "Zoom Actual Size" ), this );
   mActionZoomActualSize->setStatusTip( tr( "Zoom to Actual Size" ) );
   connect( mActionZoomActualSize, SIGNAL( triggered() ), this, SLOT( zoomActualSize() ) );
@@ -1098,6 +1102,7 @@ void QgisApp::createMenus()
   mViewMenu->addAction( mActionZoomToLayer );
   mViewMenu->addAction( mActionZoomToSelected );
   mViewMenu->addAction( mActionZoomLast );
+  mViewMenu->addAction( mActionZoomNext );
   mViewMenu->addAction( mActionZoomActualSize );
   mActionViewSeparator2 = mViewMenu->addSeparator();
 
@@ -1274,6 +1279,7 @@ void QgisApp::createToolBars()
   mMapNavToolBar->addAction( mActionZoomToSelected );
   mMapNavToolBar->addAction( mActionZoomToLayer );
   mMapNavToolBar->addAction( mActionZoomLast );
+  mMapNavToolBar->addAction( mActionZoomNext );
   mMapNavToolBar->addAction( mActionDraw );
   mToolbarMenu->addAction( mMapNavToolBar->toggleViewAction() );
   //
@@ -1489,6 +1495,7 @@ void QgisApp::setTheme( QString theThemeName )
   mActionZoomToSelected->setIcon( getThemeIcon( "/mActionZoomToSelected.png" ) );
   mActionPan->setIcon( getThemeIcon( "/mActionPan.png" ) );
   mActionZoomLast->setIcon( getThemeIcon( "/mActionZoomLast.png" ) );
+  mActionZoomNext->setIcon( getThemeIcon( "/mActionZoomNext.png" ) );
   mActionZoomToLayer->setIcon( getThemeIcon( "/mActionZoomToLayer.png" ) );
   mActionIdentify->setIcon( getThemeIcon( "/mActionIdentify.png" ) );
   mActionSelect->setIcon( getThemeIcon( "/mActionSelect.png" ) );
@@ -3856,6 +3863,14 @@ void QgisApp::zoomToPrevious()
 
 }
 
+void QgisApp::zoomToNext()
+{
+  mMapCanvas->zoomToNextExtent();
+  // notify the project we've made a change
+  QgsProject::instance()->dirty( true );
+
+}
+
 void QgisApp::zoomActualSize()
 {
   mMapLegend->legendLayerZoomNative();
@@ -5807,4 +5822,3 @@ QPixmap QgisApp::getThemePixmap( const QString theName )
     return QPixmap( myDefaultPath );
   }
 }
-
diff --git a/src/app/qgisapp.h b/src/app/qgisapp.h
@@ -235,6 +235,7 @@ class QgisApp : public QMainWindow
     QAction *actionZoomToLayer() { return mActionZoomToLayer; }
     QAction *actionZoomToSelected() { return mActionZoomToSelected; }
     QAction *actionZoomLast() { return mActionZoomLast; }
+    QAction *actionZoomNext() { return mActionZoomNext; }
     QAction *actionZoomActualSize() { return mActionZoomActualSize; }
     QAction *actionViewSeparator2() { return mActionViewSeparator2; }
     QAction *actionMapTips() { return mActionMapTips; }
@@ -326,6 +327,8 @@ class QgisApp : public QMainWindow
     void zoomFull();
     //! Zoom to the previous extent
     void zoomToPrevious();
+    //! Zoom to the forward extent
+    void zoomToNext();
     //! Zoom to selected features
     void zoomToSelected();
 
@@ -711,6 +714,7 @@ class QgisApp : public QMainWindow
     QAction *mActionZoomToLayer;
     QAction *mActionZoomToSelected;
     QAction *mActionZoomLast;
+    QAction *mActionZoomNext;
     QAction *mActionZoomActualSize;
     QAction *mActionViewSeparator2;
     QAction *mActionMapTips;
diff --git a/src/app/qgisappinterface.cpp b/src/app/qgisappinterface.cpp
@@ -55,6 +55,11 @@ void QgisAppInterface::zoomToPrevious()
   qgis->zoomToPrevious();
 }
 
+void QgisAppInterface::zoomToNext()
+{
+  qgis->zoomToNext();
+}
+
 void QgisAppInterface::zoomToActiveLayer()
 {
   qgis->zoomToLayerExtent();
@@ -245,6 +250,7 @@ QAction *QgisAppInterface::actionZoomFullExtent() { return qgis->actionZoomFullE
 QAction *QgisAppInterface::actionZoomToLayer() { return qgis->actionZoomToLayer(); }
 QAction *QgisAppInterface::actionZoomToSelected() { return qgis->actionZoomToSelected(); }
 QAction *QgisAppInterface::actionZoomLast() { return qgis->actionZoomLast(); }
+QAction *QgisAppInterface::actionZoomNext() { return qgis->actionZoomNext(); }
 QAction *QgisAppInterface::actionZoomActualSize() { return qgis->actionZoomActualSize(); }
 QAction *QgisAppInterface::actionViewSeparator2() { return qgis->actionViewSeparator2(); }
 QAction *QgisAppInterface::actionMapTips() { return qgis->actionMapTips(); }
diff --git a/src/app/qgisappinterface.h b/src/app/qgisappinterface.h
@@ -47,6 +47,8 @@ class QgisAppInterface : public QgisInterface
     void zoomFull();
     //! Zoom map to previous extent
     void zoomToPrevious();
+    //! Zoom map to next extent
+    void zoomToNext();
     //! Zoom to active layer
     void zoomToActiveLayer();
 
@@ -183,6 +185,7 @@ class QgisAppInterface : public QgisInterface
     virtual QAction *actionZoomToLayer();
     virtual QAction *actionZoomToSelected();
     virtual QAction *actionZoomLast();
+    virtual QAction *actionZoomNext();
     virtual QAction *actionZoomActualSize();
     virtual QAction *actionViewSeparator2();
     virtual QAction *actionMapTips();
diff --git a/src/gui/qgisinterface.h b/src/gui/qgisinterface.h
@@ -71,6 +71,9 @@ class GUI_EXPORT QgisInterface : public QObject
     //! Zoom to previous view extent
     virtual void zoomToPrevious() = 0;
 
+    //! Zoom to next view extent
+    virtual void zoomToNext() = 0;
+
     //! Zoom to extent of the active layer
     virtual void zoomToActiveLayer() = 0;
 
diff --git a/src/gui/qgsmapcanvas.cpp b/src/gui/qgsmapcanvas.cpp
@@ -85,7 +85,7 @@ QgsMapCanvas::QgsMapCanvas( QWidget * parent, const char *name )
   setScene( mScene );
   setHorizontalScrollBarPolicy( Qt::ScrollBarAlwaysOff );
   setVerticalScrollBarPolicy( Qt::ScrollBarAlwaysOff );
-
+  mLastExtentIndex=-1;
   mCurrentLayer = NULL;
   mMapOverview = NULL;
   mMapTool = NULL;
@@ -493,8 +493,17 @@ void QgsMapCanvas::setExtent( QgsRectangle const & r )
   updateScale();
   if ( mMapOverview )
     mMapOverview->drawExtentRect();
-  mLastExtent = current;
+  if (mLastExtent.size()>20) mLastExtent.removeAt(0);
+
+  //clear all extent items after current index
+  for (int i=mLastExtent.size()-1; i>mLastExtentIndex; i--)
+  {
+	  mLastExtent.removeAt(i);
+  }
+
 
+  mLastExtent.append(extent()) ;
+  mLastExtentIndex=mLastExtent.size()-1;
   // notify canvas items of change
   updateCanvasItemPositions();
 
@@ -541,17 +550,43 @@ void QgsMapCanvas::zoomToFullExtent()
 
 void QgsMapCanvas::zoomToPreviousExtent()
 {
-  if ( mDrawing )
-  {
-    return;
-  }
+	 if ( mDrawing )
+	 {
+    	return;
+	 }
+
+	if (mLastExtentIndex>1)
+	{
+		mLastExtentIndex--;
+		mMapRenderer->setExtent(mLastExtent[mLastExtentIndex]);
+		emit extentsChanged();
+		updateScale();
+		if ( mMapOverview )
+			 mMapOverview->drawExtentRect();
+	}
 
-  QgsRectangle current = extent();
-  setExtent( mLastExtent );
-  mLastExtent = current;
   refresh();
 } // zoomToPreviousExtent
 
+void QgsMapCanvas::zoomToNextExtent()
+{
+	if ( mDrawing )
+	{
+	    return;
+	}
+	if (mLastExtentIndex<mLastExtent.size()-1)
+	{
+		mLastExtentIndex++;
+		mMapRenderer->setExtent(mLastExtent[mLastExtentIndex]);
+		emit extentsChanged();
+		updateScale();
+		  if ( mMapOverview )
+		    mMapOverview->drawExtentRect();
+	}
+	refresh();
+}// zoomToNextExtent
+
+
 
 bool QgsMapCanvas::hasCrsTransformEnabled()
 {
diff --git a/src/gui/qgsmapcanvas.h b/src/gui/qgsmapcanvas.h
@@ -29,6 +29,7 @@
 
 #include <QDomDocument>
 #include <QGraphicsView>
+#include <QtCore>
 
 class QWheelEvent;
 class QPixmap;
@@ -142,6 +143,9 @@ class GUI_EXPORT QgsMapCanvas : public QGraphicsView
     //! Zoom to the previous extent (view)
     void zoomToPreviousExtent();
 
+    //! Zoom to the Next extent (view)
+    void zoomToNextExtent();
+
     /**Zooms to the extend of the selected features*/
     void zoomToSelected();
 
@@ -412,7 +416,8 @@ class GUI_EXPORT QgsMapCanvas : public QGraphicsView
     QgsMapTool* mLastNonZoomMapTool;
 
     //! recently used extent
-    QgsRectangle mLastExtent;
+    QList <QgsRectangle> mLastExtent;
+    int mLastExtentIndex;
 
     //! Scale factor multiple for default zoom in/out
     double mWheelZoomFactor;
