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TTF.cxx
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1 // @(#)root/graf:$Id$
2 // Author: Olivier Couet 01/10/02
3 
4 /*************************************************************************
5  * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
6  * All rights reserved. *
7  * *
8  * For the licensing terms see $ROOTSYS/LICENSE. *
9  * For the list of contributors see $ROOTSYS/README/CREDITS. *
10  *************************************************************************/
11 
12 /** \class TTF
13 \ingroup BasicGraphics
14 
15 Interface to the freetype 2 library.
16 */
17 
18 # include <ft2build.h>
19 # include FT_FREETYPE_H
20 # include FT_GLYPH_H
21 #include "TROOT.h"
22 #include "TTF.h"
23 #include "TSystem.h"
24 #include "TEnv.h"
25 #include "TMath.h"
26 #include "TError.h"
27 
28 // to scale fonts to the same size as the old TT version
29 const Float_t kScale = 0.93376068;
30 
31 TTF gCleanupTTF; // Allows to call "Cleanup" at the end of the session
32 
33 Bool_t TTF::fgInit = kFALSE;
34 Bool_t TTF::fgSmoothing = kTRUE;
35 Bool_t TTF::fgKerning = kTRUE;
36 Bool_t TTF::fgHinting = kFALSE;
37 Int_t TTF::fgTBlankW = 0;
38 Int_t TTF::fgWidth = 0;
39 Int_t TTF::fgAscent = 0;
40 Int_t TTF::fgCurFontIdx = -1;
41 Int_t TTF::fgSymbItaFontIdx = -1;
42 Int_t TTF::fgFontCount = 0;
43 Int_t TTF::fgNumGlyphs = 0;
44 char *TTF::fgFontName[kTTMaxFonts];
45 FT_Matrix *TTF::fgRotMatrix = nullptr;
46 FT_Library TTF::fgLibrary;
47 FT_BBox TTF::fgCBox;
48 FT_Face TTF::fgFace[kTTMaxFonts];
49 FT_CharMap TTF::fgCharMap[kTTMaxFonts];
50 TTF::TTGlyph TTF::fgGlyphs[kMaxGlyphs];
51 
52 ClassImp(TTF);
53 
54 ////////////////////////////////////////////////////////////////////////////////
55 /// Cleanup TTF environment.
56 
57 TTF::~TTF()
58 {
59  Cleanup();
60 }
61 
62 ////////////////////////////////////////////////////////////////////////////////
63 /// Initialise the TrueType fonts interface.
64 
65 void TTF::Init()
66 {
67  fgInit = kTRUE;
68 
69  // initialize FTF library
70  if (FT_Init_FreeType(&fgLibrary)) {
71  Error("TTF::Init", "error initializing FreeType");
72  return;
73  }
74 
75  // load default font (arialbd)
76  SetTextFont(62);
77 }
78 
79 ////////////////////////////////////////////////////////////////////////////////
80 /// Cleanup. Is called by the gCleanupTTF destructor.
81 
82 void TTF::Cleanup()
83 {
84  if (!fgInit) return;
85 
86  for (int i = 0; i < fgFontCount; i++) {
87  delete [] fgFontName[i];
88  FT_Done_Face(fgFace[i]);
89  }
90  if (fgRotMatrix) delete fgRotMatrix;
91  FT_Done_FreeType(fgLibrary);
92 
93  fgInit = kFALSE;
94 }
95 
96 ////////////////////////////////////////////////////////////////////////////////
97 /// Map char to unicode. Returns 0 in case no mapping exists.
98 
99 Short_t TTF::CharToUnicode(UInt_t code)
100 {
101  if (!fgCharMap[fgCurFontIdx]) {
102  UShort_t i, platform, encoding;
103  FT_CharMap charmap;
104 
105  if (!fgFace[fgCurFontIdx]) return 0;
106  Int_t n = fgFace[fgCurFontIdx]->num_charmaps;
107  for (i = 0; i < n; i++) {
108  if (!fgFace[fgCurFontIdx]) continue;
109  charmap = fgFace[fgCurFontIdx]->charmaps[i];
110  platform = charmap->platform_id;
111  encoding = charmap->encoding_id;
112  if ((platform == 3 && encoding == 1) ||
113  (platform == 0 && encoding == 0) ||
114  (platform == 1 && encoding == 0 &&
115  !strcmp(fgFontName[fgCurFontIdx], "wingding.ttf")) ||
116  (platform == 1 && encoding == 0 &&
117  !strcmp(fgFontName[fgCurFontIdx], "symbol.ttf")))
118  {
119  fgCharMap[fgCurFontIdx] = charmap;
120  if (FT_Set_Charmap(fgFace[fgCurFontIdx], fgCharMap[fgCurFontIdx]))
121  Error("TTF::CharToUnicode", "error in FT_Set_CharMap");
122  return FT_Get_Char_Index(fgFace[fgCurFontIdx], (FT_ULong)code);
123  }
124  }
125  }
126  return FT_Get_Char_Index(fgFace[fgCurFontIdx], (FT_ULong)code);
127 }
128 
129 ////////////////////////////////////////////////////////////////////////////////
130 /// Get width (w) and height (h) when text is horizontal.
131 
132 void TTF::GetTextExtent(UInt_t &w, UInt_t &h, char *text)
133 {
134  if (!fgInit) Init();
135 
136  SetRotationMatrix(0);
137  PrepareString(text);
138  LayoutGlyphs();
139  Int_t Xoff = 0; if (fgCBox.xMin < 0) Xoff = -fgCBox.xMin;
140  Int_t Yoff = 0; if (fgCBox.yMin < 0) Yoff = -fgCBox.yMin;
141  w = fgCBox.xMax + Xoff + fgTBlankW;
142  h = fgCBox.yMax + Yoff;
143 }
144 
145 ////////////////////////////////////////////////////////////////////////////////
146 /// Get advance (a) when text is horizontal.
147 
148 void TTF::GetTextAdvance(UInt_t &a, char *text)
149 {
150  if (!fgInit) Init();
151 
152  SetRotationMatrix(0);
153  PrepareString(text);
154  LayoutGlyphs();
155  a = GetWidth()>>6;
156 }
157 
158 ////////////////////////////////////////////////////////////////////////////////
159 /// Get width (w) and height (h) when text is horizontal.
160 
161 void TTF::GetTextExtent(UInt_t &w, UInt_t &h, wchar_t *text)
162 {
163  if (!fgInit) Init();
164 
165  SetRotationMatrix(0);
166  PrepareString(text);
167  LayoutGlyphs();
168  Int_t Xoff = 0; if (fgCBox.xMin < 0) Xoff = -fgCBox.xMin;
169  Int_t Yoff = 0; if (fgCBox.yMin < 0) Yoff = -fgCBox.yMin;
170  w = fgCBox.xMax + Xoff + fgTBlankW;
171  h = fgCBox.yMax + Yoff;
172 }
173 
174 ////////////////////////////////////////////////////////////////////////////////
175 /// Compute the glyphs positions, fgAscent and fgWidth (needed for alignment).
176 /// Perform the Glyphs transformation.
177 /// Compute the string control box.
178 /// If required take the "kerning" into account.
179 /// SetRotation and PrepareString should have been called before.
180 
181 void TTF::LayoutGlyphs()
182 {
183  TTGlyph* glyph = fgGlyphs;
184  FT_Vector origin;
185  FT_UInt load_flags;
186  FT_UInt prev_index = 0;
187 
188  fgAscent = 0;
189  fgWidth = 0;
190 
191  load_flags = FT_LOAD_DEFAULT;
192  if (!fgHinting) load_flags |= FT_LOAD_NO_HINTING;
193 
194  fgCBox.xMin = fgCBox.yMin = 32000;
195  fgCBox.xMax = fgCBox.yMax = -32000;
196 
197  for (int n = 0; n < fgNumGlyphs; n++, glyph++) {
198 
199  // compute glyph origin
200  if (fgKerning) {
201  if (prev_index) {
202  FT_Vector kern;
203  FT_Get_Kerning(fgFace[fgCurFontIdx], prev_index, glyph->fIndex,
204  fgHinting ? ft_kerning_default : ft_kerning_unfitted,
205  &kern);
206  fgWidth += kern.x;
207  }
208  prev_index = glyph->fIndex;
209  }
210 
211  origin.x = fgWidth;
212  origin.y = 0;
213 
214  // clear existing image if there is one
215  if (glyph->fImage) {
216  FT_Done_Glyph(glyph->fImage);
217  glyph->fImage = nullptr;
218  }
219 
220  // load the glyph image (in its native format)
221  if (FT_Load_Glyph(fgFace[fgCurFontIdx], glyph->fIndex, load_flags))
222  continue;
223 
224  // extract the glyph image
225  if (FT_Get_Glyph (fgFace[fgCurFontIdx]->glyph, &glyph->fImage))
226  continue;
227 
228  glyph->fPos = origin;
229  fgWidth += fgFace[fgCurFontIdx]->glyph->advance.x;
230  fgAscent = TMath::Max((Int_t)(fgFace[fgCurFontIdx]->glyph->metrics.horiBearingY), fgAscent);
231 
232  // transform the glyphs
233  FT_Vector_Transform(&glyph->fPos, fgRotMatrix);
234  if (FT_Glyph_Transform(glyph->fImage, fgRotMatrix, &glyph->fPos))
235  continue;
236 
237  // compute the string control box
238  FT_BBox bbox;
239  FT_Glyph_Get_CBox(glyph->fImage, ft_glyph_bbox_pixels, &bbox);
240  if (bbox.xMin < fgCBox.xMin) fgCBox.xMin = bbox.xMin;
241  if (bbox.yMin < fgCBox.yMin) fgCBox.yMin = bbox.yMin;
242  if (bbox.xMax > fgCBox.xMax) fgCBox.xMax = bbox.xMax;
243  if (bbox.yMax > fgCBox.yMax) fgCBox.yMax = bbox.yMax;
244  }
245 }
246 
247 ////////////////////////////////////////////////////////////////////////////////
248 /// Put the characters in "string" in the "glyphs" array.
249 
250 void TTF::PrepareString(const char *string)
251 {
252  const unsigned char *p = (const unsigned char*) string;
253  TTGlyph *glyph = fgGlyphs;
254  UInt_t index; // Unicode value
255  Int_t NbTBlank = 0; // number of trailing blanks
256 
257  fgTBlankW = 0;
258  fgNumGlyphs = 0;
259  while (*p) {
260  index = CharToUnicode((FT_ULong)*p);
261  if (index != 0) {
262  glyph->fIndex = index;
263  glyph++;
264  fgNumGlyphs++;
265  }
266  if (*p == ' ') {
267  NbTBlank++;
268  } else {
269  NbTBlank = 0;
270  }
271  if (fgNumGlyphs >= kMaxGlyphs) break;
272  p++;
273  }
274 
275  // compute the trailing blanks width. It is use to compute the text
276  // width in GetTextExtent
277  if (NbTBlank) {
278  FT_UInt load_flags = FT_LOAD_DEFAULT;
279  if (!fgHinting) load_flags |= FT_LOAD_NO_HINTING;
280  if (FT_Load_Glyph(fgFace[fgCurFontIdx], 3, load_flags)) return;
281  fgTBlankW = (Int_t)((fgFace[fgCurFontIdx]->glyph->advance.x)>>6)*NbTBlank;
282  }
283 }
284 
285 ////////////////////////////////////////////////////////////////////////////////
286 /// Put the characters in "string" in the "glyphs" array.
287 
288 void TTF::PrepareString(const wchar_t *string)
289 {
290  const wchar_t *p = string;
291  TTGlyph *glyph = fgGlyphs;
292  UInt_t index; // Unicode value
293  Int_t NbTBlank = 0; // number of trailing blanks
294 
295  fgTBlankW = 0;
296  fgNumGlyphs = 0;
297  while (*p) {
298  index = FT_Get_Char_Index(fgFace[fgCurFontIdx], (FT_ULong)*p);
299  if (index != 0) {
300  glyph->fIndex = index;
301  glyph++;
302  fgNumGlyphs++;
303  }
304  if (*p == ' ') {
305  NbTBlank++;
306  } else {
307  NbTBlank = 0;
308  }
309  if (fgNumGlyphs >= kMaxGlyphs) break;
310  p++;
311  }
312 
313  // compute the trailing blanks width. It is use to compute the text
314  // width in GetTextExtent
315  if (NbTBlank) {
316  FT_UInt load_flags = FT_LOAD_DEFAULT;
317  if (!fgHinting) load_flags |= FT_LOAD_NO_HINTING;
318  if (FT_Load_Glyph(fgFace[fgCurFontIdx], 3, load_flags)) return;
319  fgTBlankW = (Int_t)((fgFace[fgCurFontIdx]->glyph->advance.x)>>6)*NbTBlank;
320  }
321 }
322 
323 ////////////////////////////////////////////////////////////////////////////////
324 /// Set hinting flag.
325 
326 void TTF::SetHinting(Bool_t state)
327 {
328  fgHinting = state;
329 }
330 
331 ////////////////////////////////////////////////////////////////////////////////
332 /// Set kerning flag.
333 
334 void TTF::SetKerning(Bool_t state)
335 {
336  fgKerning = state;
337 }
338 
339 ////////////////////////////////////////////////////////////////////////////////
340 /// Set the rotation matrix used to rotate the font outlines.
341 
342 void TTF::SetRotationMatrix(Float_t angle)
343 {
344  Float_t rangle = Float_t(angle * TMath::Pi() / 180.); // Angle in radian
345 #if defined(FREETYPE_PATCH) && \
346  (FREETYPE_MAJOR == 2) && (FREETYPE_MINOR == 1) && (FREETYPE_PATCH == 2)
347  Float_t sin = TMath::Sin(rangle);
348  Float_t cos = TMath::Cos(rangle);
349 #else
350  Float_t sin = TMath::Sin(-rangle);
351  Float_t cos = TMath::Cos(-rangle);
352 #endif
353 
354  if (!fgRotMatrix) fgRotMatrix = new FT_Matrix;
355 
356  fgRotMatrix->xx = (FT_Fixed) (cos * (1<<16));
357  fgRotMatrix->xy = (FT_Fixed) (sin * (1<<16));
358  fgRotMatrix->yx = -fgRotMatrix->xy;
359  fgRotMatrix->yy = fgRotMatrix->xx;
360 }
361 
362 ////////////////////////////////////////////////////////////////////////////////
363 /// Set smoothing (anti-aliasing) flag.
364 
365 void TTF::SetSmoothing(Bool_t state)
366 {
367  fgSmoothing = state;
368 }
369 
370 ////////////////////////////////////////////////////////////////////////////////
371 /// Set text font to specified name.
372 /// - font : font name
373 /// - italic : the fonts should be slanted. Used for symbol font.
374 ///
375 /// Set text font to specified name. This function returns 0 if
376 /// the specified font is found, 1 if not.
377 
378 Int_t TTF::SetTextFont(const char *fontname, Int_t italic)
379 {
380  if (!fgInit) Init();
381 
382  if (!fontname || !fontname[0]) {
383  Warning("TTF::SetTextFont",
384  "no font name specified, using default font %s", fgFontName[0]);
385  fgCurFontIdx = 0;
386  return 0;
387  }
388  const char *basename = gSystem->BaseName(fontname);
389 
390  // check if font is in cache
391  int i;
392  for (i = 0; i < fgFontCount; i++) {
393  if (!strcmp(fgFontName[i], basename)) {
394  if (italic) {
395  if (i==fgSymbItaFontIdx) {
396  fgCurFontIdx = i;
397  return 0;
398  }
399  } else {
400  if (i!=fgSymbItaFontIdx) {
401  fgCurFontIdx = i;
402  return 0;
403  }
404  }
405  }
406  }
407 
408  // enough space in cache to load font?
409  if (fgFontCount >= kTTMaxFonts) {
410  Error("TTF::SetTextFont", "too many fonts opened (increase kTTMaxFont = %d)",
411  kTTMaxFonts);
412  Warning("TTF::SetTextFont", "using default font %s", fgFontName[0]);
413  fgCurFontIdx = 0; // use font 0 (default font, set in ctor)
414  return 0;
415  }
416 
417  // try to load font (font must be in Root.TTFontPath resource)
418  const char *ttpath = gEnv->GetValue("Root.TTFontPath",
419  TROOT::GetTTFFontDir());
420  char *ttfont = gSystem->Which(ttpath, fontname, kReadPermission);
421 
422  if (!ttfont) {
423  Error("TTF::SetTextFont", "font file %s not found in path", fontname);
424  if (fgFontCount) {
425  Warning("TTF::SetTextFont", "using default font %s", fgFontName[0]);
426  fgCurFontIdx = 0; // use font 0 (default font, set in ctor)
427  return 0;
428  } else {
429  return 1;
430  }
431  }
432 
433  FT_Face tface = 0;
434 
435  if (FT_New_Face(fgLibrary, ttfont, 0, &tface)) {
436  Error("TTF::SetTextFont", "error loading font %s", ttfont);
437  delete [] ttfont;
438  if (tface) FT_Done_Face(tface);
439  if (fgFontCount) {
440  Warning("TTF::SetTextFont", "using default font %s", fgFontName[0]);
441  fgCurFontIdx = 0;
442  return 0;
443  } else {
444  return 1;
445  }
446  }
447 
448  delete [] ttfont;
449 
450  fgFontName[fgFontCount] = StrDup(basename);
451  fgCurFontIdx = fgFontCount;
452  fgFace[fgCurFontIdx] = tface;
453  fgCharMap[fgCurFontIdx] = 0;
454  fgFontCount++;
455 
456  if (italic) {
457  fgSymbItaFontIdx = fgCurFontIdx;
458  FT_Matrix slantMat;
459  slantMat.xx = (1 << 16);
460  slantMat.xy = ((1 << 16) >> 2);
461  slantMat.yx = 0;
462  slantMat.yy = (1 << 16);
463  FT_Set_Transform( fgFace[fgSymbItaFontIdx], &slantMat, NULL );
464  }
465 
466  return 0;
467 }
468 
469 ////////////////////////////////////////////////////////////////////////////////
470 /// Set specified font.
471 /// List of the currently supported fonts (screen and PostScript)
472 ///
473 /// | Font ID | X11 | TTF |
474 /// |---------|---------------------------|------------------|
475 /// | 1 | times-medium-i-normal | timesi.ttf |
476 /// | 2 | times-bold-r-normal | timesbd.ttf |
477 /// | 3 | times-bold-i-normal | timesbi.ttf |
478 /// | 4 | helvetica-medium-r-normal | arial.ttf |
479 /// | 5 | helvetica-medium-o-normal | ariali.ttf |
480 /// | 6 | helvetica-bold-r-normal | arialbd.ttf |
481 /// | 7 | helvetica-bold-o-normal | arialbi.ttf |
482 /// | 8 | courier-medium-r-normal | cour.ttf |
483 /// | 9 | courier-medium-o-normal | couri.ttf |
484 /// | 10 | courier-bold-r-normal | courbd.ttf |
485 /// | 11 | courier-bold-o-normal | courbi.ttf |
486 /// | 12 | symbol-medium-r-normal | symbol.ttf |
487 /// | 13 | times-medium-r-normal | times.ttf |
488 /// | 14 | | wingding.ttf |
489 /// | 15 | symbol oblique is emulated from symbol.ttf | |
490 
491 void TTF::SetTextFont(Font_t fontnumber)
492 {
493  // Added by cholm for use of DFSG - fonts - based on Kevins fix.
494  // Table of Microsoft and (for non-MSFT operating systems) backup
495  // FreeFont TTF fonts.
496  static const char *fonttable[][2] = {
497  { "Root.TTFont.0", "FreeSansBold.otf" },
498  { "Root.TTFont.1", "FreeSerifItalic.otf" },
499  { "Root.TTFont.2", "FreeSerifBold.otf" },
500  { "Root.TTFont.3", "FreeSerifBoldItalic.otf" },
501  { "Root.TTFont.4", "FreeSans.otf" },
502  { "Root.TTFont.5", "FreeSansOblique.otf" },
503  { "Root.TTFont.6", "FreeSansBold.otf" },
504  { "Root.TTFont.7", "FreeSansBoldOblique.otf" },
505  { "Root.TTFont.8", "FreeMono.otf" },
506  { "Root.TTFont.9", "FreeMonoOblique.otf" },
507  { "Root.TTFont.10", "FreeMonoBold.otf" },
508  { "Root.TTFont.11", "FreeMonoBoldOblique.otf" },
509  { "Root.TTFont.12", "symbol.ttf" },
510  { "Root.TTFont.13", "FreeSerif.otf" },
511  { "Root.TTFont.14", "wingding.ttf" },
512  { "Root.TTFont.15", "symbol.ttf" },
513  { "Root.TTFont.STIXGen", "STIXGeneral.otf" },
514  { "Root.TTFont.STIXGenIt", "STIXGeneralItalic.otf" },
515  { "Root.TTFont.STIXGenBd", "STIXGeneralBol.otf" },
516  { "Root.TTFont.STIXGenBdIt", "STIXGeneralBolIta.otf" },
517  { "Root.TTFont.STIXSiz1Sym", "STIXSiz1Sym.otf" },
518  { "Root.TTFont.STIXSiz1SymBd", "STIXSiz1SymBol.otf" },
519  { "Root.TTFont.STIXSiz2Sym", "STIXSiz2Sym.otf" },
520  { "Root.TTFont.STIXSiz2SymBd", "STIXSiz2SymBol.otf" },
521  { "Root.TTFont.STIXSiz3Sym", "STIXSiz3Sym.otf" },
522  { "Root.TTFont.STIXSiz3SymBd", "STIXSiz3SymBol.otf" },
523  { "Root.TTFont.STIXSiz4Sym", "STIXSiz4Sym.otf" },
524  { "Root.TTFont.STIXSiz4SymBd", "STIXSiz4SymBol.otf" },
525  { "Root.TTFont.STIXSiz5Sym", "STIXSiz5Sym.otf" },
526  { "Root.TTFont.ME", "DroidSansFallback.ttf" },
527  { "Root.TTFont.CJKMing", "DroidSansFallback.ttf" },
528  { "Root.TTFont.CJKGothic", "DroidSansFallback.ttf" }
529  };
530 
531  static int fontset = -1;
532  int thisset = fontset;
533 
534  int fontid = fontnumber / 10;
535  if (fontid < 0 || fontid > 31) fontid = 0;
536 
537  if (thisset == -1) {
538  // try to load font (font must be in Root.TTFontPath resource)
539  // to see which fontset we have available
540  const char *ttpath = gEnv->GetValue("Root.TTFontPath",
541  TROOT::GetTTFFontDir());
542  char *ttfont = gSystem->Which(ttpath, gEnv->GetValue(fonttable[fontid][0], fonttable[fontid][1]), kReadPermission);
543  if (ttfont) {
544  delete [] ttfont;
545  thisset = 0;
546  } else {
547  // try backup free font
548  thisset = 1;
549  }
550  }
551  Int_t italic = 0;
552  if (fontid==15) italic = 1;
553  int ret = SetTextFont(gEnv->GetValue(fonttable[fontid][thisset], fonttable[fontid][1]), italic);
554  // Do not define font set is we're loading the symbol.ttf - it's
555  // the same in both cases.
556  if (ret == 0 && fontid != 12) fontset = thisset;
557 }
558 
559 ////////////////////////////////////////////////////////////////////////////////
560 /// Set current text size.
561 
562 void TTF::SetTextSize(Float_t textsize)
563 {
564  if (!fgInit) Init();
565  if (textsize < 0) return;
566 
567  if (fgCurFontIdx < 0 || fgFontCount <= fgCurFontIdx) {
568  Error("TTF::SetTextSize", "current font index out of bounds");
569  fgCurFontIdx = 0;
570  return;
571  }
572 
573  Int_t tsize = (Int_t)(textsize*kScale+0.5) << 6;
574  if (FT_Set_Char_Size(fgFace[fgCurFontIdx], tsize, tsize, 72, 72))
575  Error("TTF::SetTextSize", "error in FT_Set_Char_Size");
576 }
577 
578 ////////////////////////////////////////////////////////////////////////////////
579 
580 void TTF::Version(Int_t &major, Int_t &minor, Int_t &patch)
581 {
582  FT_Library_Version(fgLibrary, &major, &minor, &patch);
583 }
584 
585 ////////////////////////////////////////////////////////////////////////////////
586 
587 Bool_t TTF::GetHinting()
588 {
589  return fgHinting;
590 }
591 
592 ////////////////////////////////////////////////////////////////////////////////
593 
594 Bool_t TTF::GetKerning()
595 {
596  return fgKerning;
597 }
598 
599 ////////////////////////////////////////////////////////////////////////////////
600 
601 Bool_t TTF::GetSmoothing()
602 {
603  return fgSmoothing;
604 }
605 
606 ////////////////////////////////////////////////////////////////////////////////
607 
608 Bool_t TTF::IsInitialized()
609 {
610  return fgInit;
611 }
612 
613 ////////////////////////////////////////////////////////////////////////////////
614 
615 Int_t TTF::GetWidth()
616 {
617  return fgWidth;
618 }
619 
620 ////////////////////////////////////////////////////////////////////////////////
621 
622 Int_t TTF::GetAscent()
623 {
624  return fgAscent;
625 }
626 
627 ////////////////////////////////////////////////////////////////////////////////
628 
629 Int_t TTF::GetNumGlyphs()
630 {
631  return fgNumGlyphs;
632 }
633 
634 ////////////////////////////////////////////////////////////////////////////////
635 
636 FT_Matrix *TTF::GetRotMatrix()
637 {
638  return fgRotMatrix;
639 }
640 
641 ////////////////////////////////////////////////////////////////////////////////
642 
643 const FT_BBox &TTF::GetBox()
644 {
645  return fgCBox;
646 }
647 
648 ////////////////////////////////////////////////////////////////////////////////
649 
650 TTF::TTGlyph *TTF::GetGlyphs()
651 {
652  return fgGlyphs;
653 }
TTF::fgCharMap
static FT_CharMap fgCharMap[kTTMaxFonts]
font character map
Definition: TTF.h:77
n
const Int_t n
Definition: legend1.C:16
TTF::CharToUnicode
static Short_t CharToUnicode(UInt_t code)
Map char to unicode. Returns 0 in case no mapping exists.
Definition: TTF.cxx:99
TTF::GetWidth
static Int_t GetWidth()
Definition: TTF.cxx:615
TTF::TTGlyph
TTF helper class containing glyphs description.
Definition: TTF.h:65
kTRUE
const Bool_t kTRUE
Definition: RtypesCore.h:91
TTF::fgKerning
static Bool_t fgKerning
use kerning (true by default)
Definition: TTF.h:86
TTF::fgInit
static Bool_t fgInit
true if the Init has been called
Definition: TTF.h:85
Warning
void Warning(const char *location, const char *msgfmt,...)
Use this function in warning situations.
Definition: TError.cxx:231
TTF::LayoutGlyphs
static void LayoutGlyphs()
Compute the glyphs positions, fgAscent and fgWidth (needed for alignment).
Definition: TTF.cxx:181
TTF::Init
static void Init()
Initialise the TrueType fonts interface.
Definition: TTF.cxx:65
TTF::kTTMaxFonts
@ kTTMaxFonts
Definition: TTF.h:73
TTF::Cleanup
static void Cleanup()
Cleanup. Is called by the gCleanupTTF destructor.
Definition: TTF.cxx:82
TMath::Max
Short_t Max(Short_t a, Short_t b)
Definition: TMathBase.h:212
TTF::TTGlyph::fImage
FT_Glyph fImage
glyph image
Definition: TTF.h:69
TTF::fgSmoothing
static Bool_t fgSmoothing
use anti-aliasing (true when >8 planes, false otherwise)
Definition: TTF.h:90
TTF::GetTextExtent
static void GetTextExtent(UInt_t &w, UInt_t &h, char *text)
Get width (w) and height (h) when text is horizontal.
Definition: TTF.cxx:132
UShort_t
unsigned short UShort_t
Definition: RtypesCore.h:40
gEnv
R__EXTERN TEnv * gEnv
Definition: TEnv.h:171
TSystem::BaseName
virtual const char * BaseName(const char *pathname)
Base name of a file name. Base name of /user/root is root.
Definition: TSystem.cxx:933
TMath::Cos
Double_t Cos(Double_t)
Definition: TMath.h:643
TSystem::Which
virtual char * Which(const char *search, const char *file, EAccessMode mode=kFileExists)
Find location of file in a search path.
Definition: TSystem.cxx:1544
TTF::fgFontName
static char * fgFontName[kTTMaxFonts]
font name
Definition: TTF.h:81
ClassImp
#define ClassImp(name)
Definition: Rtypes.h:364
TTF::SetSmoothing
static void SetSmoothing(Bool_t state)
Set smoothing (anti-aliasing) flag.
Definition: TTF.cxx:365
TTF::Version
static void Version(Int_t &major, Int_t &minor, Int_t &patch)
Definition: TTF.cxx:580
TTF::SetTextSize
static void SetTextSize(Float_t textsize)
Set current text size.
Definition: TTF.cxx:562
TTF::fgCurFontIdx
static Int_t fgCurFontIdx
current font index
Definition: TTF.h:78
TTF::fgSymbItaFontIdx
static Int_t fgSymbItaFontIdx
Symbol italic font index.
Definition: TTF.h:79
Float_t
float Float_t
Definition: RtypesCore.h:57
Int_t
int Int_t
Definition: RtypesCore.h:45
TTF::SetTextFont
static void SetTextFont(Font_t fontnumber)
Set specified font.
Definition: TTF.cxx:491
Font_t
short Font_t
Definition: RtypesCore.h:79
TTF::~TTF
virtual ~TTF()
Cleanup TTF environment.
Definition: TTF.cxx:57
sin
double sin(double)
cos
double cos(double)
TTF
Interface to the freetype 2 library.
Definition: TTF.h:53
TEnv::GetValue
virtual Int_t GetValue(const char *name, Int_t dflt) const
Returns the integer value for a resource.
Definition: TEnv.cxx:491
TEnv.h
TTF::SetHinting
static void SetHinting(Bool_t state)
Set hinting flag.
Definition: TTF.cxx:326
TTF::GetRotMatrix
static FT_Matrix * GetRotMatrix()
Definition: TTF.cxx:636
TTF::kMaxGlyphs
@ kMaxGlyphs
Definition: TTF.h:73
Bool_t
bool Bool_t
Definition: RtypesCore.h:63
TTF::TTGlyph::fPos
FT_Vector fPos
position of glyph origin
Definition: TTF.h:68
TTF::GetTextAdvance
static void GetTextAdvance(UInt_t &a, char *text)
Get advance (a) when text is horizontal.
Definition: TTF.cxx:148
TTF::GetSmoothing
static Bool_t GetSmoothing()
Definition: TTF.cxx:601
text
TText * text
Definition: entrylist_figure1.C:10
bool
TROOT.h
TTF::fgGlyphs
static TTF::TTGlyph fgGlyphs[kMaxGlyphs]
glyphs
Definition: TTF.h:83
TTF::fgLibrary
static FT_Library fgLibrary
FreeType font library.
Definition: TTF.h:87
TTF.h
TTF::TTGlyph::fIndex
UInt_t fIndex
glyph index in face
Definition: TTF.h:67
TMath::Pi
constexpr Double_t Pi()
Definition: TMath.h:37
TTF::fgRotMatrix
static FT_Matrix * fgRotMatrix
rotation matrix
Definition: TTF.h:89
TTF::fgWidth
static Int_t fgWidth
string width, used to compute X alignment
Definition: TTF.h:92
TTF::fgFontCount
static Int_t fgFontCount
number of fonts loaded
Definition: TTF.h:80
TSystem.h
h
#define h(i)
Definition: RSha256.hxx:106
a
auto * a
Definition: textangle.C:12
kFALSE
const Bool_t kFALSE
Definition: RtypesCore.h:92
StrDup
char * StrDup(const char *str)
Duplicate the string str.
Definition: TString.cxx:2510
TMath::Sin
Double_t Sin(Double_t)
Definition: TMath.h:639
TTF::fgNumGlyphs
static Int_t fgNumGlyphs
number of glyphs in the string
Definition: TTF.h:88
Short_t
short Short_t
Definition: RtypesCore.h:39
TTF::GetAscent
static Int_t GetAscent()
Definition: TTF.cxx:622
unsigned int
TTF::GetGlyphs
static TTGlyph * GetGlyphs()
Definition: TTF.cxx:650
gSystem
R__EXTERN TSystem * gSystem
Definition: TSystem.h:559
TTF::GetHinting
static Bool_t GetHinting()
Definition: TTF.cxx:587
TTF::fgHinting
static Bool_t fgHinting
use hinting (true by default)
Definition: TTF.h:84
TTF::IsInitialized
static Bool_t IsInitialized()
Definition: TTF.cxx:608
TTF::fgCBox
static FT_BBox fgCBox
string control box
Definition: TTF.h:76
TTF::fgAscent
static Int_t fgAscent
string ascent, used to compute Y alignment
Definition: TTF.h:75
TTF::GetNumGlyphs
static Int_t GetNumGlyphs()
Definition: TTF.cxx:629
gCleanupTTF
TTF gCleanupTTF
Definition: TTF.cxx:31
TTF::PrepareString
static void PrepareString(const char *string)
Put the characters in "string" in the "glyphs" array.
Definition: TTF.cxx:250
TROOT::GetTTFFontDir
static const TString & GetTTFFontDir()
Get the fonts directory in the installation. Static utility function.
Definition: TROOT.cxx:3101
TTF::SetRotationMatrix
static void SetRotationMatrix(Float_t angle)
Set the rotation matrix used to rotate the font outlines.
Definition: TTF.cxx:342
kReadPermission
@ kReadPermission
Definition: TSystem.h:47
TTF::GetBox
static const FT_BBox & GetBox()
Definition: TTF.cxx:643
TTF::GetKerning
static Bool_t GetKerning()
Definition: TTF.cxx:594
TTF::fgFace
static FT_Face fgFace[kTTMaxFonts]
font face
Definition: TTF.h:82
TTF::fgTBlankW
static Int_t fgTBlankW
trailing blanks width
Definition: TTF.h:91
kScale
const Float_t kScale
Definition: TTF.cxx:29
TMath.h
int
Error
void Error(const char *location, const char *msgfmt,...)
Use this function in case an error occurred.
Definition: TError.cxx:187
TError.h
TTF::SetKerning
static void SetKerning(Bool_t state)
Set kerning flag.
Definition: TTF.cxx:334