ENH: support text shadow, italic, opacity in runTimePostProcessing

src/runTimePostProcessing/geometryBase.H

@@ -25,7 +25,15 @@ Class
     Foam::functionObjects::runTimePostPro::geometryBase
 
 Description
-    Base class for surface handling
+    Base class for surface, text handling
+
+    Dictionary controls
+    \table
+        Property    | Description                          | Required | Default
+        visible     | Display the object                   | yes |
+        renderMode  | Shading (flat/gouraud/phong)         | no  | gouraud
+        opacity     | Object opacity                       | no  | 1.0
+    \endtable
 
 SourceFiles
     geometryBase.C

src/runTimePostProcessing/text.C

@@ -34,6 +34,21 @@ License
 #include "vtkTextActor.h"
 #include "vtkTextProperty.h"
 
+// * * * * * * * * * * * * * Static Member Functions * * * * * * * * * * * * //
+
+const Foam::Enum
+<
+    Foam::functionObjects::runTimePostPro::text::halignType
+>
+Foam::functionObjects::runTimePostPro::text::halignTypeNames
+({
+    { halignType::LEFT, "left" },
+    { halignType::CENTER, "center" },
+    { halignType::CENTER, "centre" },
+    { halignType::RIGHT, "right" },
+});
+
+
 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
 Foam::functionObjects::runTimePostPro::text::text
@@ -48,7 +63,13 @@ Foam::functionObjects::runTimePostPro::text::text
     position_(),
     size_(dict.get<scalar>("size")),
     colour_(nullptr),
+    halign_
+    (
+        halignTypeNames.lookupOrDefault("halign", dict, halignType::LEFT)
+    ),
     bold_(dict.get<bool>("bold")),
+    italic_(dict.lookupOrDefault("italic", false)),
+    shadow_(dict.lookupOrDefault("shadow", false)),
     timeStamp_(dict.lookupOrDefault("timeStamp", false))
 {
     dict.readEntry("position", position_);
@@ -86,21 +107,28 @@ void Foam::functionObjects::runTimePostPro::text::addGeometryToScene
     auto actor = vtkSmartPointer<vtkTextActor>::New();
 
     // Concatenate string with timeStamp if true
-    string textAndTime = string_;
+    string str = string_;
     if (timeStamp_)
     {
-        textAndTime =
-            textAndTime + " " + geometryBase::parent_.mesh().time().timeName();
+        str += " " + geometryBase::parent_.mesh().time().timeName();
     }
-    actor->SetInput(textAndTime.c_str());
-    actor->GetTextProperty()->SetFontFamilyToArial();
-    actor->GetTextProperty()->SetFontSize(size_);
-    actor->GetTextProperty()->SetJustificationToLeft();
-    actor->GetTextProperty()->SetVerticalJustificationToBottom();
-    actor->GetTextProperty()->SetBold(bold_);
+    actor->SetInput(str.c_str());
+
+    vtkTextProperty* prop = actor->GetTextProperty();
+
+    prop->SetFontFamilyToArial();
+    prop->SetFontSize(size_);
+    prop->SetJustification(int(halign_));
+    prop->SetVerticalJustificationToBottom();
+    prop->SetBold(bold_);
+    prop->SetItalic(italic_);
+    prop->SetShadow(shadow_);
 
     const vector colour = colour_->value(position);
-    actor->GetTextProperty()->SetColor(colour[0], colour[1], colour[2]);
+
+    prop->SetColor(colour[0], colour[1], colour[2]);
+    prop->SetOpacity(opacity(position));
+
     actor->GetPositionCoordinate()->SetCoordinateSystemToNormalizedViewport();
     actor->GetPositionCoordinate()->SetValue
     (

src/runTimePostProcessing/text.H

@@ -34,7 +34,11 @@ Description
         string      "text to display";
         position    (0.1 0.05);
         size        18;
+        // halign      left;  // (left | centre | right)
         bold        yes;
+        // Optional entry
+
+        shadow      false;
         visible     yes;
 
         // Optionally override default colour
@@ -48,15 +52,24 @@ Description
     Dictionary controls
     \table
         Property    | Description                          | Required | Default
-        visible     | Display the text                     | yes |
         string      | Text to display                      | yes |
         position    | The (x y) viewport position          | yes |
         size        | The font size in points              | yes |
+        halign      | Text justification (left/centre/ right) | no | left
         bold        | Use bold font                        | yes |
+        italic      | Use italic font                      | no  | false
+        shadow      | Add text shadow                      | no  | false
         colour      | Override default text colour         | no  |
         timeStamp   | Append solution timeName to string   | no  | false
     \endtable
 
+    Inherited controls
+    \table
+        Property    | Description                          | Required | Default
+        visible     | Display the object                   | yes |
+        opacity     | Object opacity                       | no  | 1.0
+    \endtable
+
 SourceFiles
     text.C
 
@@ -88,6 +101,22 @@ class text
 :
     public geometryBase
 {
+public:
+
+    // Public enumerations
+
+        //- Horizontal alignment type
+        enum halignType
+        {
+            LEFT   = 0,   //!< Left-justified text - default ("left")
+            CENTER = 1,   //!< Centred text ("center", "centre")
+            RIGHT  = 2    //!< Right-justified text  ("right")
+        };
+
+        //- Horizontal alignment names (includes "center" and "centre")
+        static const Enum<halignType> halignTypeNames;
+
+
 protected:
 
     // Protected Data
@@ -104,9 +133,18 @@ protected:
         //- Colour
         autoPtr<Function1<vector>> colour_;
 
+        //- Horizontal alignment
+        halignType halign_;
+
         //- Bold flag
         bool bold_;
 
+        //- Italic flag
+        bool italic_;
+
+        //- Shadow flag
+        bool shadow_;
+
         //- Time stamp flag
         bool timeStamp_;