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text.cxx
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1 /// \file
2 /// \ingroup tutorial_v7
3 ///
4 /// \macro_code
5 ///
6 /// \date 2017-10-17
7 /// \warning This is part of the ROOT 7 prototype! It will change without notice. It might trigger earthquakes. Feedback
8 /// is welcome!
9 /// \author Olivier Couet <Olivier.Couet@cern.ch>
10 
11 /*************************************************************************
12  * Copyright (C) 1995-2015, Rene Brun and Fons Rademakers. *
13  * All rights reserved. *
14  * *
15  * For the licensing terms see $ROOTSYS/LICENSE. *
16  * For the list of contributors see $ROOTSYS/README/CREDITS. *
17  *************************************************************************/
18 
19 #include "ROOT/RCanvas.hxx"
20 #include "ROOT/RColor.hxx"
21 #include "ROOT/RText.hxx"
22 #include "ROOT/RPadPos.hxx"
23 
24 void text()
25 {
26  using namespace ROOT::Experimental;
27 
28  // Create a canvas to be displayed.
29  auto canvas = RCanvas::Create("Canvas Title");
30 
31  for (int i=0; i<=360; i+=10) {
32  auto text = canvas->Draw<RText>(RPadPos(0.5_normal, 0.6_normal), "____ Hello World");
33 
34  RColor col((int) (0.38*i), (int) (0.64*i), (int) (0.76*i));
35  text->AttrText().SetColor(col).SetSize(10+i/10).SetAngle(i).SetAlign(13).SetFont(42);
36  }
37 
38  canvas->Show();
39 }
ROOT::Experimental::RColor
The color class.
Definition: RColor.hxx:34
RPadPos.hxx
ROOT::Experimental::RCanvas::Create
static std::shared_ptr< RCanvas > Create(const std::string &title)
Create new canvas instance.
Definition: RCanvas.cxx:103
RColor.hxx
text
TText * text
Definition: entrylist_figure1.C:10
RCanvas.hxx
TObject::Draw
virtual void Draw(Option_t *option="")
Default Draw method for all objects.
Definition: TObject.cxx:197
ROOT::Experimental
Definition: RDirectory.hxx:30
ROOT::Experimental::RPadPos
A position (horizontal and vertical) in a RPad.
Definition: RPadPos.hxx:28