Added an option to show also colliding labels (in engine configuration)

git-svn-id: http://svn.osgeo.org/qgis/branches/symbology-ng-branch@11180 c8812cc2-4d05-0410-92ff-de0c093fc19c
qgis · Jul 26, 2009 · 6e3bafe · 6e3bafe
1 parent 3d04984
commit 6e3bafe
Show file tree

Hide file tree

Showing 6 changed files with 23 additions and 6 deletions.
diff --git a/src/core/pal/pal.cpp b/src/core/pal/pal.cpp
@@ -956,7 +956,7 @@ namespace pal
     return prob;
   }
 
-  std::list<LabelPosition*>* Pal::solveProblem(Problem* prob)
+  std::list<LabelPosition*>* Pal::solveProblem(Problem* prob, bool displayAll )
   {
     if (prob == NULL)
       return new std::list<LabelPosition*>();
@@ -970,7 +970,7 @@ namespace pal
     else
       prob->popmusic();
 
-    return prob->getSolution( false );
+    return prob->getSolution( displayAll );
   }
 
 

diff --git a/src/core/pal/pal.h b/src/core/pal/pal.h
@@ -340,7 +340,7 @@ namespace pal
 
       Problem* extractProblem(double scale, double bbox[4]);
 
-      std::list<LabelPosition*>* solveProblem(Problem* prob);
+      std::list<LabelPosition*>* solveProblem(Problem* prob, bool displayAll);
 
       /**
        * \brief Set map resolution

diff --git a/src/plugins/labeling/engineconfigdialog.cpp b/src/plugins/labeling/engineconfigdialog.cpp
@@ -20,6 +20,8 @@ EngineConfigDialog::EngineConfigDialog(PalLabeling* lbl, QWidget* parent)
   spinCandPolygon->setValue(candPolygon);
 
   chkShowCandidates->setChecked( mLBL->isShowingCandidates() );
+
+  chkShowAllLabels->setChecked( mLBL->isShowingAllLabels() );
 }
 
 
@@ -34,5 +36,7 @@ void EngineConfigDialog::onOK()
 
   mLBL->setShowingCandidates( chkShowCandidates->isChecked() );
 
+  mLBL->setShowingAllLabels( chkShowAllLabels->isChecked() );
+
   accept();
 }
diff --git a/src/plugins/labeling/engineconfigdialog.ui b/src/plugins/labeling/engineconfigdialog.ui
@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>286</width>
-    <height>250</height>
+    <width>316</width>
+    <height>271</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -172,6 +172,13 @@
      </property>
     </spacer>
    </item>
+   <item>
+    <widget class="QCheckBox" name="chkShowAllLabels">
+     <property name="text">
+      <string>Show all labels (i.e. including colliding labels)</string>
+     </property>
+    </widget>
+   </item>
    <item>
     <widget class="QCheckBox" name="chkShowCandidates">
      <property name="text">

diff --git a/src/plugins/labeling/pallabeling.cpp b/src/plugins/labeling/pallabeling.cpp
@@ -184,6 +184,7 @@ PalLabeling::PalLabeling(QgsMapRenderer* mapRenderer)
   }
 
   mShowingCandidates = FALSE;
+  mShowingAllLabels = FALSE;
 
   initPal();
 }
@@ -380,7 +381,7 @@ void PalLabeling::doLabeling(QPainter* painter, QgsRectangle extent)
   }
 
   // find the solution
-  labels = mPal->solveProblem( problem );
+  labels = mPal->solveProblem( problem, mShowingAllLabels );
 
   std::cout << "LABELING work:   " << t.elapsed() << "ms  ... labels# " << labels->size() << std::endl;
   t.restart();

diff --git a/src/plugins/labeling/pallabeling.h b/src/plugins/labeling/pallabeling.h
@@ -116,6 +116,9 @@ class PalLabeling
     void setShowingCandidates(bool showing) { mShowingCandidates = showing; }
     const QList<LabelCandidate>& candidates() { return mCandidates; }
 
+    bool isShowingAllLabels() const { return mShowingAllLabels; }
+    void setShowingAllLabels(bool showing) { mShowingAllLabels = showing; }
+
     //! hook called when drawing layer before issuing select()
     static int prepareLayerHook(void* context, void* layerContext, int& attrIndex);
     //! hook called when drawing for every feature in a layer
@@ -143,6 +146,8 @@ class PalLabeling
     // list of candidates from last labeling
     QList<LabelCandidate> mCandidates;
     bool mShowingCandidates;
+
+    bool mShowingAllLabels; // whether to avoid collisions or not
 };
 
 #endif // PALLABELING_H