From e6773333b955991aa3ebddd6476e3c253f2aa1d9 Mon Sep 17 00:00:00 2001
From: vsv <vitaly.smetannikov@opencascade.com>
Date: Mon, 23 Nov 2015 12:49:06 +0300
Subject: [PATCH] Provide special symbol for parametrized dimensions

---
 src/SketcherPrs/SketcherPrs_LengthDimension.cpp |  12 ++++++++++++
 src/XGUI/pictures/expression.png                | Bin 648 -> 437 bytes
 2 files changed, 12 insertions(+)

diff --git a/src/SketcherPrs/SketcherPrs_LengthDimension.cpp b/src/SketcherPrs/SketcherPrs_LengthDimension.cpp
index 24977ecee..8f93fd0ea 100644
--- a/src/SketcherPrs/SketcherPrs_LengthDimension.cpp
+++ b/src/SketcherPrs/SketcherPrs_LengthDimension.cpp
@@ -21,12 +21,17 @@
 #include <GeomAPI_Lin2d.h>
 
 #include <ModelAPI_Data.h>
+#include <ModelAPI_AttributeDouble.h>
+
+#include <AIS_DisplaySpecialSymbol.hxx>
 
 
 static const gp_Pnt MyDefStart(0,0,0);
 static const gp_Pnt MyDefEnd(1,0,0);
 static const gp_Pln MyDefPln(gp_Pnt(0,0,0), gp_Dir(0,0,1));
 
+static const Standard_ExtCharacter MySummSymbol(0x2211);
+
 IMPLEMENT_STANDARD_HANDLE(SketcherPrs_LengthDimension, AIS_LengthDimension);
 IMPLEMENT_STANDARD_RTTIEXT(SketcherPrs_LengthDimension, AIS_LengthDimension);
 
@@ -67,6 +72,13 @@ void SketcherPrs_LengthDimension::Compute(const Handle(PrsMgr_PresentationManage
   // The value of vertical aligment is sometimes changed
   myAspect->TextAspect()->SetVerticalJustification(Graphic3d_VTA_CENTER);
 
+  AttributeDoublePtr aValue = myConstraint->data()->real(SketchPlugin_Constraint::VALUE());
+  std::set<std::string> aParams = aValue->usedParameters();
+  if (aParams.size() > 0) {
+    SetSpecialSymbol(MySummSymbol);
+    SetDisplaySpecialSymbol(AIS_DSS_Before);
+  }
+
   AIS_LengthDimension::Compute(thePresentationManager, thePresentation, theMode);
 }
 
diff --git a/src/XGUI/pictures/expression.png b/src/XGUI/pictures/expression.png
index d9ea77546004261d02fa1cf2bfa704a0546e349b..158678a87d07c6633fbc2ce55d17826ae90f934b 100644
GIT binary patch
delta 411
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-- 
2.39.2