TWebPadPainter.h

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// Author:  Sergey Linev, GSI  10/04/2017
 
/*************************************************************************
 * Copyright (C) 1995-2019, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/
 
#ifndef ROOT_TWebPadPainter
#define ROOT_TWebPadPainter
 
#include "TPadPainterBase.h"
 
#include <string>
 
#include "TWebPainting.h"
 
class TWebCanvas;
 
class TWebPadPainter : public TPadPainterBase {
 
friend class TWebCanvas;
 
protected:
 
   TWebPainting *fPainting{nullptr};      ///<! object to store all painting, owned by TWebPS object
 
   enum { attrLine = 0x1, attrFill = 0x2, attrMarker = 0x4, attrText = 0x8, attrAll = 0xf };
 
   Float_t *StoreOperation(const std::string &oper, unsigned attrkind, int opersize = 0);
 
public:
 
   TWebPadPainter() {} // NOLINT: not allowed to use = default because of TObject::kIsOnHeap detection, see ROOT-10300
 
   void SetPainting(TWebPainting *p) { fPainting = p; }
 
   Bool_t   HasTTFonts() const override { return kTRUE; }
 
   void     SetOpacity(Int_t percent) override;
 
   //2. "Off-screen management" part.
   Int_t    CreateDrawable(UInt_t, UInt_t) override { return -1; }
   void     ClearDrawable() override {}
   void     CopyDrawable(Int_t, Int_t, Int_t) override {}
   void     DestroyDrawable(Int_t) override {}
   void     SelectDrawable(Int_t) override {}
 
   //jpg, png, bmp, gif output.
   ESaveImageResult  SaveAsImage(TVirtualPad *pad, const char *fileName, Int_t type) const override;
 
   //TASImage support (noop for a non-gl pad).
   void     DrawPixels(const unsigned char *pixelData, UInt_t width, UInt_t height,
                       Int_t dstX, Int_t dstY, Bool_t enableAlphaBlending) override;
 
   void     DrawLine(Double_t x1, Double_t y1, Double_t x2, Double_t y2) override;
   void     DrawLineNDC(Double_t u1, Double_t v1, Double_t u2, Double_t v2) override;
 
   void     DrawBox(Double_t x1, Double_t y1, Double_t x2, Double_t y2, EBoxMode mode) override;
   //TPad needs double and float versions.
   void     DrawFillArea(Int_t n, const Double_t *x, const Double_t *y) override;
   void     DrawFillArea(Int_t n, const Float_t *x, const Float_t *y) override;
 
   //TPad needs both double and float versions of DrawPolyLine.
   void     DrawPolyLine(Int_t n, const Double_t *x, const Double_t *y) override;
   void     DrawPolyLine(Int_t n, const Float_t *x, const Float_t *y) override;
   void     DrawPolyLineNDC(Int_t n, const Double_t *u, const Double_t *v) override;
 
   //TPad needs both versions.
   void     DrawPolyMarker(Int_t n, const Double_t *x, const Double_t *y) override;
   void     DrawPolyMarker(Int_t n, const Float_t *x, const Float_t *y) override;
 
   void     DrawText(Double_t x, Double_t y, const char *text, ETextMode mode) override;
   void     DrawText(Double_t x, Double_t y, const wchar_t *text, ETextMode mode) override;
   void     DrawTextNDC(Double_t u, Double_t v, const char *text, ETextMode mode) override;
   void     DrawTextNDC(Double_t u, Double_t v, const wchar_t *text, ETextMode mode) override;
 
   void     DrawTextUrl(Double_t x, Double_t y, const char *text, const char *url) override;
 
   Bool_t   IsSupportAlpha() const override { return kTRUE; }
 
private:
   //Let's make this clear:
   TWebPadPainter(const TWebPadPainter &rhs) = delete;
   TWebPadPainter(TWebPadPainter && rhs) = delete;
   TWebPadPainter & operator = (const TWebPadPainter &rhs) = delete;
   TWebPadPainter & operator = (TWebPadPainter && rhs) = delete;
 
   ClassDefOverride(TWebPadPainter, 0) //Abstract interface for painting in TPad
};
 
#endif