pstable.C

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/// \file
/// \ingroup tutorial_graphics
/// \notebook
/// \preview Display all possible types of ROOT/Postscript characters.
///
/// \macro_code
///
/// \author Olivier Couet
 
void table(Float_t x1, Float_t x2, Float_t yrange, TText &t, const char **symbol, Bool_t octal);
 
void pstable()
{
   const char *symbol1[] = {"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P",
                            "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "0", "1", "2", "3", "4", "5",
                            "6", "7", "8", "9", ".", ",", "+", "-", "*", "/", "=", "(", ")", "{", "}", "END"};
 
   const char *symbol2[] = {"a", "b", "c",   "d",    "e",     "f",    "g",    "h",  "i", "j",     "k", "l",
                            "m", "n", "o",   "p",    "q",     "r",    "s",    "t",  "u", "v",     "w", "x",
                            "y", "z", ":",   ";",    "@",     "\\",   "_",    "|",  "%", "@'",    "<", ">",
                            "[", "]", "\42", "@\43", "@\136", "@\77", "@\41", "@&", "$", "@\176", " ", "END"};
 
   const char *symbol3[] = {"\241", "\242", "\243", "\244", "\245", "\246", "\247", "\250", "\251", "\252",
                            "\253", "\254", "\255", "\256", "\257", "\260", "\261", "\262", "\263", "\264",
                            "\265", "\266", "\267", "\270", "\271", "\272", "\273", "\274", "\275", "\276",
                            "\277", "\300", "\301", "\302", "\303", "\304", "\305", "\306", "\307", "\310",
                            "\311", "\312", "\313", "\314", "\315", "\316", "\317", "END"};
 
   const char *symbol4[] = {"\321", "\322", "\323", "\324", "\325", "\326", "\327", "\330", "\331", "\332",
                            "\333", "\334", "\335", "\336", "\337", "\340", "\341", "\342", "\343", "\344",
                            "\345", "\346", "\347", "\340", "\351", "\352", "\353", "\354", "\355", "\356",
                            "\357", "\360", "\361", "\362", "\363", "\364", "\365", "\366", "\367", "\370",
                            "\371", "\372", "\373", "\374", "\375", "\376", "\377", "END"};
 
   const char *symbol5[] = {"\177", "\200", "\201", "\202", "\203", "\204", "\205", "\206", "\207",
                            "\210", "\211", "\212", "\213", "\214", "\215", "\216", "\217", "\220",
                            "\221", "\222", "\223", "\224", "\225", "\226", "\227", "\230", "\231",
                            "\232", "\233", "\234", "\235", "\236", "\237", "\240", "END"};
 
   Float_t xrange = 18;
   Float_t yrange = 25;
   Int_t w = 650;
   Int_t h = w * yrange / xrange;
 
   TCanvas *c1 = new TCanvas("c1", "c1", 200, 10, w, h);
   c1->Range(0, 0, xrange, yrange);
 
   TText t(0, 0, "a");
   t.SetTextSize(0.02);
   t.SetTextFont(62);
   t.SetTextAlign(22);
 
   table(0.5, 0.5 * xrange - 0.5, yrange, t, symbol1, 0);
   table(0.5 * xrange + 0.5, xrange - 0.5, yrange, t, symbol2, 0);
   TText tlabel(0, 0, "a");
   tlabel.SetTextFont(72);
   tlabel.SetTextSize(0.018);
   tlabel.SetTextAlign(22);
   tlabel.DrawText(0.5 * xrange, 1.3, "Input characters are standard keyboard characters");
   c1->Modified();
   c1->Update();
   c1->Print("pstable1.ps");
 
   TCanvas *c2 = new TCanvas("c2", "c2", 220, 20, w, h);
   c2->Range(0, 0, xrange, yrange);
 
   table(0.5, 0.5 * xrange - 0.5, yrange, t, symbol3, 1);
   table(0.5 * xrange + 0.5, xrange - 0.5, yrange, t, symbol4, 1);
   tlabel.DrawText(0.5 * xrange, 1.3, "Input characters using backslash and octal numbers");
   c2->Modified();
   c2->Update();
   c2->Print("pstable2.ps");
 
   TCanvas *c3 = new TCanvas("c3", "c3", 240, 20, w, h);
   c3->Range(0, 0, xrange, yrange);
 
   table(0.5, 0.5 * xrange - 0.5, yrange, t, symbol5, 1);
   tlabel.DrawText(0.5 * xrange, 1.3, "Input characters using backslash and octal numbers");
   c3->Modified();
   c3->Update();
   c3->Print("pstable3.ps");
}
void table(Float_t x1, Float_t x2, Float_t yrange, TText &t, const char **symbol, Bool_t octal)
{
   Int_t i;
   Int_t n = 0;
   for (i = 0; i < 1000; i++) {
      if (!strcmp(symbol[i], "END"))
         break;
      n++;
   }
   Float_t y1 = 2.5;
   Float_t y2 = yrange - 0.5;
   Float_t dx = (x2 - x1) / 5;
   Float_t dy = (y2 - 1 - y1) / (n + 1);
   Float_t y = y2 - 1 - 0.7 * dy;
   Float_t xc0 = x1 + 0.5 * dx;
   Float_t xc1 = xc0 + dx;
   Float_t xc2 = xc1 + dx;
   Float_t xc3 = xc2 + dx;
   Float_t xc4 = xc3 + dx;
   TLine line;
   line.DrawLine(x1, y1, x1, y2);
   line.DrawLine(x1, y1, x2, y1);
   line.DrawLine(x1, y2, x2, y2);
   line.DrawLine(x2, y1, x2, y2);
   line.DrawLine(x1, y2 - 1, x2, y2 - 1);
   line.DrawLine(x1 + dx, y1, x1 + dx, y2);
   line.DrawLine(x1 + 2 * dx, y1, x1 + 2 * dx, y2);
   line.DrawLine(x1 + 3 * dx, y1, x1 + 3 * dx, y2);
   line.DrawLine(x1 + 4 * dx, y1, x1 + 4 * dx, y2);
   TText tit(0, 0, "a");
   tit.SetTextSize(0.015);
   tit.SetTextFont(72);
   tit.SetTextAlign(22);
   tit.DrawText(xc0, y2 - 0.6, "Input");
   tit.DrawText(xc1, y2 - 0.6, "Roman");
   tit.DrawText(xc2, y2 - 0.6, "Greek");
   tit.DrawText(xc3, y2 - 0.6, "Special");
   tit.DrawText(xc4, y2 - 0.6, "Zapf");
   char text[12];
   for (i = 0; i < n; i++) {
      if (octal) {
         unsigned char value = *symbol[i];
         snprintf(text, 12, "@\\ %3o", value);
      } else {
         strcpy(text, symbol[i]);
      }
      t.DrawText(xc0, y, text);
      snprintf(text, 12, "%s", symbol[i]);
      t.DrawText(xc1, y, text);
      snprintf(text, 12, "`%s", symbol[i]);
      t.DrawText(xc2, y, text);
      snprintf(text, 12, "'%s", symbol[i]);
      t.DrawText(xc3, y, text);
      snprintf(text, 12, "~%s", symbol[i]);
      t.DrawText(xc4, y, text);
      y -= dy;
   }
}