DtOsgWindowTextInstance.h

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/****************************************************************************** 
** Copyright (c) 2023 MAK Technologies, Inc. 
** All rights reserved. 
******************************************************************************/ 
 
 
#pragma once
 
#include <vrvOsg/vrvOsg.h>

#include <vrvCore/DtWindowTextInstance.h>
#include <vrvCore/DtWindowText.h>

#include <vrvUtil/DtSignalConnectionManager.h>

#include <vrvGraphics/DtFont.h>
#include <vrvGraphics/DtTextRenderer.h>

#include <osg/Vec2>
#include <osg/Matrix>
namespace makVrv 
{
   class DtDe;
   class DtTextProxyInterface;
   class DtChannelManager;
   class DtChannel;

   class DT_DLL_VRVOSG DtOsgWindowTextInstance : public DtWindowTextInstance
   {
   public:
      DtOsgWindowTextInstance(DtDe& de);

      virtual ~DtOsgWindowTextInstance();

      virtual void setVisible(bool isVisible);

      virtual void setTopLeftCorner( float x, float y );

      virtual bool calculateSize(float& width, float& height) const;

      virtual void setColor(float r,float g,float b,float a);

      virtual void setText(const std::string& textString);

      virtual void setFont(const std::string& fontFilePath, float sizeInPoints);

      virtual void setTextBoxWidth(float widthInPixels);

      virtual void setAlignment(DtWindowText::TextAlignment alignment);
      
      virtual bool visible() const;

      virtual void setTransform( DtMatrix3<double> transform );

      virtual void update();

      virtual void setGroup( int groupId );

      virtual void setChannelOverlay( const std::string& displayName,
         const std::string& windowName, const std::string& channelName ) override;

      void createText();
   protected:
      virtual void setClipBox( DtVector2<double> bottomLeftLocation, DtVector2<double> topRightLocation );

      virtual void slot_releaseResources();
      
      virtual void slot_channelToBeDestroyed(DtChannelManager*, DtChannel*);

      virtual void slot_onViewCreated();

      virtual bool clipTextPosition( osg::Vec2 position );

      DtDe& myDe;
      float myColorR, myColorG, myColorB, myColorA;
      std::string myFontFile;
      std::string myTextString;
      std::string myDisplayName;
      std::string myWindowName;
      std::string myChannelName;
      DtFontInterface* myFont;
      float mySize;
      float myWidth;
      osg::Vec2 myTopLeftPosition; // this is our "vertex" location
      osg::Vec2 myClipBoxBottomLeft;
      osg::Vec2 myClipBoxTopRight;
      DtFont::TextAlignment myAlignment;
      DtTextProxyInterface* myText;
      bool myIsVisible;
      bool myGeometryDirty;
      bool myUseChannelOverlay;
      osg::Matrix myTransform;
      int myGroup;

      DtSignalConnectionManager myConnections;

      boost::signalslib::connection myViewCreatedConnection;
   }; 

   class DT_DLL_VRVOSG DtOsgWindowTextInstanceCreator : public DtWindowTextInstanceCreator
   {
   public:
      DtOsgWindowTextInstanceCreator( DtDe& de );

      virtual DtWindowTextInstance* create();
   };
}