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b311480e | 1 | // Created on: 2011-07-13 |
2 | // Created by: Sergey ZERCHANINOV | |
a174a3c5 | 3 | // Copyright (c) 2011-2013 OPEN CASCADE SAS |
b311480e | 4 | // |
973c2be1 | 5 | // This file is part of Open CASCADE Technology software library. |
b311480e | 6 | // |
d5f74e42 | 7 | // This library is free software; you can redistribute it and/or modify it under |
8 | // the terms of the GNU Lesser General Public License version 2.1 as published | |
973c2be1 | 9 | // by the Free Software Foundation, with special exception defined in the file |
10 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT | |
11 | // distribution for complete text of the license and disclaimer of any warranty. | |
b311480e | 12 | // |
973c2be1 | 13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. | |
b311480e | 15 | |
2166f0fa | 16 | #include <OpenGl_AspectText.hxx> |
30f0ad28 | 17 | #include <OpenGl_GlCore11.hxx> |
a174a3c5 | 18 | #include <OpenGl_GraphicDriver.hxx> |
30f0ad28 | 19 | #include <OpenGl_ShaderManager.hxx> |
20 | #include <OpenGl_ShaderProgram.hxx> | |
21 | #include <OpenGl_ShaderStates.hxx> | |
25ef750e | 22 | #include <OpenGl_Sampler.hxx> |
30f0ad28 | 23 | #include <OpenGl_Text.hxx> |
bf75be98 | 24 | #include <OpenGl_Workspace.hxx> |
2166f0fa | 25 | |
a174a3c5 | 26 | #include <Font_FontMgr.hxx> |
27 | #include <TCollection_HAsciiString.hxx> | |
28 | ||
a174a3c5 | 29 | #ifdef HAVE_GL2PS |
30 | #include <gl2ps.h> | |
31 | #endif | |
32 | ||
33 | namespace | |
2166f0fa | 34 | { |
a174a3c5 | 35 | static const GLdouble THE_IDENTITY_MATRIX[4][4] = |
36 | { | |
37 | {1.,0.,0.,0.}, | |
38 | {0.,1.,0.,0.}, | |
39 | {0.,0.,1.,0.}, | |
40 | {0.,0.,0.,1.} | |
41 | }; | |
42 | ||
43 | #ifdef HAVE_GL2PS | |
44 | static char const* TheFamily[] = {"Helvetica", "Courier", "Times"}; | |
45 | static char const* TheItalic[] = {"Oblique", "Oblique", "Italic"}; | |
46 | static char const* TheBase[] = {"", "", "-Roman"}; | |
47 | ||
48 | //! Convert font name used for rendering to some "good" font names | |
49 | //! that produce good vector text. | |
50 | static void getGL2PSFontName (const char* theSrcFont, | |
51 | char* thePsFont) | |
52 | { | |
53 | if (strstr (theSrcFont, "Symbol")) | |
54 | { | |
55 | sprintf (thePsFont, "%s", "Symbol"); | |
56 | return; | |
57 | } | |
58 | else if (strstr (theSrcFont, "ZapfDingbats")) | |
59 | { | |
60 | sprintf (thePsFont, "%s", "WingDings"); | |
61 | return; | |
62 | } | |
2166f0fa | 63 | |
a174a3c5 | 64 | int aFontId = 0; |
65 | bool isBold = false; | |
66 | bool isItalic = false; | |
67 | if (strstr (theSrcFont, "Courier")) | |
68 | { | |
69 | aFontId = 1; | |
70 | } | |
71 | else if (strstr (theSrcFont, "Times")) | |
72 | { | |
73 | aFontId = 2; | |
74 | } | |
2166f0fa | 75 | |
a174a3c5 | 76 | if (strstr (theSrcFont, "Bold")) |
77 | { | |
78 | isBold = true; | |
79 | } | |
80 | if (strstr (theSrcFont, "Italic") | |
81 | || strstr (theSrcFont, "Oblique")) | |
82 | { | |
83 | isItalic = true; | |
84 | } | |
2166f0fa | 85 | |
a174a3c5 | 86 | if (isBold) |
87 | { | |
a174a3c5 | 88 | if (isItalic) |
89 | { | |
8b224a09 | 90 | sprintf (thePsFont, "%s-Bold%s", TheFamily[aFontId], TheItalic[aFontId]); |
91 | } | |
92 | else | |
93 | { | |
94 | sprintf (thePsFont, "%s-Bold", TheFamily[aFontId]); | |
a174a3c5 | 95 | } |
96 | } | |
97 | else if (isItalic) | |
98 | { | |
99 | sprintf (thePsFont, "%s-%s", TheFamily[aFontId], TheItalic[aFontId]); | |
100 | } | |
101 | else | |
102 | { | |
103 | sprintf (thePsFont, "%s%s", TheFamily[aFontId], TheBase[aFontId]); | |
104 | } | |
105 | } | |
2166f0fa | 106 | |
a174a3c5 | 107 | static void exportText (const NCollection_String& theText, |
108 | const Standard_Boolean theIs2d, | |
109 | const OpenGl_AspectText& theAspect, | |
110 | const Standard_Integer theHeight) | |
111 | { | |
2166f0fa | 112 | |
a174a3c5 | 113 | char aPsFont[64]; |
114 | getGL2PSFontName (theAspect.FontName().ToCString(), aPsFont); | |
2166f0fa | 115 | |
ca3c13d1 | 116 | #if !defined(GL_ES_VERSION_2_0) |
a174a3c5 | 117 | if (theIs2d) |
118 | { | |
119 | glRasterPos2f (0.0f, 0.0f); | |
120 | } | |
121 | else | |
122 | { | |
123 | glRasterPos3f (0.0f, 0.0f, 0.0f); | |
124 | } | |
125 | ||
126 | GLubyte aZero = 0; | |
127 | glBitmap (1, 1, 0, 0, 0, 0, &aZero); | |
ca3c13d1 | 128 | #endif |
a174a3c5 | 129 | |
130 | // Standard GL2PS's alignment isn't used, because it doesn't work correctly | |
131 | // for all formats, therefore alignment is calculated manually relative | |
132 | // to the bottom-left corner, which corresponds to the GL2PS_TEXT_BL value | |
105aae76 | 133 | gl2psTextOpt (theText.ToCString(), aPsFont, (GLshort)theHeight, GL2PS_TEXT_BL, theAspect.Angle()); |
a174a3c5 | 134 | } |
135 | #endif | |
136 | ||
137 | }; | |
138 | ||
139 | // ======================================================================= | |
140 | // function : OpenGl_Text | |
141 | // purpose : | |
142 | // ======================================================================= | |
143 | OpenGl_Text::OpenGl_Text() | |
144 | : myWinX (0.0f), | |
145 | myWinY (0.0f), | |
146 | myWinZ (0.0f), | |
147 | myScaleHeight (1.0f), | |
148 | myPoint (0.0f, 0.0f, 0.0f), | |
149 | myIs2d (false) | |
150 | { | |
151 | myParams.Height = 10; | |
152 | myParams.HAlign = Graphic3d_HTA_LEFT; | |
153 | myParams.VAlign = Graphic3d_VTA_BOTTOM; | |
2166f0fa SK |
154 | } |
155 | ||
a174a3c5 | 156 | // ======================================================================= |
157 | // function : OpenGl_Text | |
158 | // purpose : | |
159 | // ======================================================================= | |
b64d84be | 160 | OpenGl_Text::OpenGl_Text (const Standard_Utf8Char* theText, |
161 | const OpenGl_Vec3& thePoint, | |
162 | const OpenGl_TextParam& theParams) | |
a174a3c5 | 163 | : myWinX (0.0f), |
164 | myWinY (0.0f), | |
165 | myWinZ (0.0f), | |
166 | myScaleHeight (1.0f), | |
167 | myExportHeight (1.0f), | |
168 | myParams (theParams), | |
b64d84be | 169 | myString (theText), |
a174a3c5 | 170 | myPoint (thePoint), |
171 | myIs2d (false) | |
172 | { | |
173 | // | |
174 | } | |
2166f0fa | 175 | |
a174a3c5 | 176 | // ======================================================================= |
177 | // function : SetPosition | |
178 | // purpose : | |
179 | // ======================================================================= | |
180 | void OpenGl_Text::SetPosition (const OpenGl_Vec3& thePoint) | |
2166f0fa | 181 | { |
a174a3c5 | 182 | myPoint = thePoint; |
2166f0fa SK |
183 | } |
184 | ||
a174a3c5 | 185 | // ======================================================================= |
186 | // function : SetFontSize | |
187 | // purpose : | |
188 | // ======================================================================= | |
189 | void OpenGl_Text::SetFontSize (const Handle(OpenGl_Context)& theCtx, | |
190 | const Standard_Integer theFontSize) | |
191 | { | |
192 | if (myParams.Height != theFontSize) | |
193 | { | |
10b9c7df | 194 | Release (theCtx.operator->()); |
a174a3c5 | 195 | } |
196 | myParams.Height = theFontSize; | |
197 | } | |
198 | ||
199 | // ======================================================================= | |
200 | // function : Init | |
201 | // purpose : | |
202 | // ======================================================================= | |
203 | void OpenGl_Text::Init (const Handle(OpenGl_Context)& theCtx, | |
204 | const Standard_Utf8Char* theText, | |
205 | const OpenGl_Vec3& thePoint) | |
206 | { | |
10b9c7df | 207 | releaseVbos (theCtx.operator->()); |
a174a3c5 | 208 | myIs2d = false; |
209 | myPoint = thePoint; | |
210 | myString.FromUnicode (theText); | |
211 | } | |
212 | ||
213 | // ======================================================================= | |
214 | // function : Init | |
215 | // purpose : | |
216 | // ======================================================================= | |
217 | void OpenGl_Text::Init (const Handle(OpenGl_Context)& theCtx, | |
218 | const Standard_Utf8Char* theText, | |
219 | const OpenGl_Vec3& thePoint, | |
220 | const OpenGl_TextParam& theParams) | |
221 | { | |
222 | if (myParams.Height != theParams.Height) | |
223 | { | |
10b9c7df | 224 | Release (theCtx.operator->()); |
a174a3c5 | 225 | } |
226 | else | |
227 | { | |
10b9c7df | 228 | releaseVbos (theCtx.operator->()); |
a174a3c5 | 229 | } |
230 | myIs2d = false; | |
231 | myParams = theParams; | |
232 | myPoint = thePoint; | |
233 | myString.FromUnicode (theText); | |
234 | } | |
2166f0fa | 235 | |
a174a3c5 | 236 | // ======================================================================= |
237 | // function : Init | |
238 | // purpose : | |
239 | // ======================================================================= | |
240 | void OpenGl_Text::Init (const Handle(OpenGl_Context)& theCtx, | |
241 | const TCollection_ExtendedString& theText, | |
242 | const OpenGl_Vec2& thePoint, | |
243 | const OpenGl_TextParam& theParams) | |
2166f0fa | 244 | { |
a174a3c5 | 245 | if (myParams.Height != theParams.Height) |
246 | { | |
10b9c7df | 247 | Release (theCtx.operator->()); |
a174a3c5 | 248 | } |
249 | else | |
250 | { | |
10b9c7df | 251 | releaseVbos (theCtx.operator->()); |
a174a3c5 | 252 | } |
253 | myIs2d = true; | |
254 | myParams = theParams; | |
255 | myPoint.xy() = thePoint; | |
256 | myPoint.z() = 0.0f; | |
257 | myString.FromUnicode ((Standard_Utf16Char* )theText.ToExtString()); | |
258 | } | |
259 | ||
260 | // ======================================================================= | |
261 | // function : ~OpenGl_Text | |
262 | // purpose : | |
263 | // ======================================================================= | |
264 | OpenGl_Text::~OpenGl_Text() | |
265 | { | |
266 | // | |
267 | } | |
268 | ||
269 | // ======================================================================= | |
270 | // function : releaseVbos | |
271 | // purpose : | |
272 | // ======================================================================= | |
10b9c7df | 273 | void OpenGl_Text::releaseVbos (OpenGl_Context* theCtx) |
a174a3c5 | 274 | { |
275 | for (Standard_Integer anIter = 0; anIter < myVertsVbo.Length(); ++anIter) | |
276 | { | |
277 | Handle(OpenGl_VertexBuffer)& aVerts = myVertsVbo.ChangeValue (anIter); | |
278 | Handle(OpenGl_VertexBuffer)& aTCrds = myTCrdsVbo.ChangeValue (anIter); | |
279 | ||
10b9c7df | 280 | if (theCtx) |
a174a3c5 | 281 | { |
282 | theCtx->DelayedRelease (aVerts); | |
283 | theCtx->DelayedRelease (aTCrds); | |
284 | } | |
285 | aVerts.Nullify(); | |
286 | aTCrds.Nullify(); | |
287 | } | |
288 | myTextures.Clear(); | |
289 | myVertsVbo.Clear(); | |
290 | myTCrdsVbo.Clear(); | |
a174a3c5 | 291 | } |
292 | ||
293 | // ======================================================================= | |
294 | // function : Release | |
295 | // purpose : | |
296 | // ======================================================================= | |
10b9c7df | 297 | void OpenGl_Text::Release (OpenGl_Context* theCtx) |
a174a3c5 | 298 | { |
299 | releaseVbos (theCtx); | |
300 | if (!myFont.IsNull()) | |
301 | { | |
302 | Handle(OpenGl_Context) aCtx = theCtx; | |
303 | const TCollection_AsciiString aKey = myFont->ResourceKey(); | |
304 | myFont.Nullify(); | |
10b9c7df | 305 | if (aCtx) |
306 | aCtx->ReleaseResource (aKey, Standard_True); | |
a174a3c5 | 307 | } |
308 | } | |
309 | ||
310 | // ======================================================================= | |
311 | // function : StringSize | |
312 | // purpose : | |
313 | // ======================================================================= | |
314 | void OpenGl_Text::StringSize (const Handle(OpenGl_Context)& theCtx, | |
315 | const NCollection_String& theText, | |
316 | const OpenGl_AspectText& theTextAspect, | |
317 | const OpenGl_TextParam& theParams, | |
318 | Standard_ShortReal& theWidth, | |
319 | Standard_ShortReal& theAscent, | |
320 | Standard_ShortReal& theDescent) | |
321 | { | |
322 | theWidth = 0.0f; | |
323 | theAscent = 0.0f; | |
324 | theDescent = 0.0f; | |
325 | const TCollection_AsciiString aFontKey = FontKey (theTextAspect, theParams.Height); | |
326 | Handle(OpenGl_Font) aFont = FindFont (theCtx, theTextAspect, theParams.Height, aFontKey); | |
327 | if (aFont.IsNull() || !aFont->IsValid()) | |
328 | { | |
2166f0fa | 329 | return; |
a174a3c5 | 330 | } |
331 | ||
332 | theAscent = aFont->Ascender(); | |
333 | theDescent = aFont->Descender(); | |
334 | ||
335 | GLfloat aWidth = 0.0f; | |
336 | for (NCollection_Utf8Iter anIter = theText.Iterator(); *anIter != 0;) | |
337 | { | |
338 | const Standard_Utf32Char aCharThis = *anIter; | |
339 | const Standard_Utf32Char aCharNext = *++anIter; | |
340 | ||
341 | if (aCharThis == '\x0D' // CR (carriage return) | |
342 | || aCharThis == '\a' // BEL (alarm) | |
343 | || aCharThis == '\f' // FF (form feed) NP (new page) | |
344 | || aCharThis == '\b' // BS (backspace) | |
345 | || aCharThis == '\v') // VT (vertical tab) | |
346 | { | |
347 | continue; // skip unsupported carriage control codes | |
348 | } | |
349 | else if (aCharThis == '\x0A') // LF (line feed, new line) | |
350 | { | |
351 | theWidth = Max (theWidth, aWidth); | |
352 | aWidth = 0.0f; | |
353 | continue; | |
354 | } | |
355 | else if (aCharThis == ' ') | |
356 | { | |
357 | aWidth += aFont->AdvanceX (aCharThis, aCharNext); | |
358 | continue; | |
359 | } | |
360 | else if (aCharThis == '\t') | |
361 | { | |
362 | aWidth += aFont->AdvanceX (' ', aCharNext) * 8.0f; | |
363 | continue; | |
364 | } | |
365 | ||
366 | aWidth += aFont->AdvanceX (aCharThis, aCharNext); | |
367 | } | |
368 | theWidth = Max (theWidth, aWidth); | |
369 | ||
370 | Handle(OpenGl_Context) aCtx = theCtx; | |
371 | aFont.Nullify(); | |
372 | aCtx->ReleaseResource (aFontKey, Standard_True); | |
373 | } | |
374 | ||
375 | // ======================================================================= | |
376 | // function : Render | |
377 | // purpose : | |
378 | // ======================================================================= | |
379 | void OpenGl_Text::Render (const Handle(OpenGl_Workspace)& theWorkspace) const | |
380 | { | |
25ef750e | 381 | const OpenGl_AspectText* aTextAspect = theWorkspace->AspectText (Standard_True); |
382 | const Handle(OpenGl_Texture) aPrevTexture = theWorkspace->DisableTexture(); | |
383 | const Handle(OpenGl_Context)& aCtx = theWorkspace->GetGlContext(); | |
384 | const Handle(OpenGl_Sampler)& aSampler = aCtx->TextureSampler(); | |
385 | if (!aSampler.IsNull()) | |
386 | { | |
387 | aSampler->Unbind (*aCtx); | |
388 | } | |
30f0ad28 | 389 | |
390 | if (aCtx->IsGlGreaterEqual (2, 0)) | |
391 | { | |
8625ef7e | 392 | const Handle(OpenGl_ShaderProgram)& aProgram = aTextAspect->ShaderProgramRes (aCtx); |
7d3e64ef | 393 | aCtx->BindProgram (aProgram); |
30f0ad28 | 394 | if (!aProgram.IsNull()) |
395 | { | |
7d3e64ef | 396 | aProgram->ApplyVariables (aCtx); |
30f0ad28 | 397 | |
398 | const OpenGl_MaterialState* aMaterialState = aCtx->ShaderManager()->MaterialState (aProgram); | |
5322131b | 399 | |
30f0ad28 | 400 | if (aMaterialState == NULL || aMaterialState->Aspect() != aTextAspect) |
401 | aCtx->ShaderManager()->UpdateMaterialStateTo (aProgram, aTextAspect); | |
5322131b | 402 | |
30f0ad28 | 403 | aCtx->ShaderManager()->PushState (aProgram); |
404 | } | |
30f0ad28 | 405 | } |
406 | ||
a174a3c5 | 407 | // use highlight color or colors from aspect |
408 | if (theWorkspace->NamedStatus & OPENGL_NS_HIGHLIGHT) | |
409 | { | |
410 | render (theWorkspace->PrinterContext(), | |
30f0ad28 | 411 | aCtx, |
a174a3c5 | 412 | *aTextAspect, |
413 | *theWorkspace->HighlightColor, | |
414 | *theWorkspace->HighlightColor); | |
415 | } | |
416 | else | |
417 | { | |
418 | render (theWorkspace->PrinterContext(), | |
30f0ad28 | 419 | aCtx, |
a174a3c5 | 420 | *aTextAspect, |
421 | aTextAspect->Color(), | |
422 | aTextAspect->SubtitleColor()); | |
423 | } | |
2166f0fa | 424 | |
a174a3c5 | 425 | // restore aspects |
25ef750e | 426 | if (!aSampler.IsNull()) |
427 | { | |
428 | aSampler->Bind (*aCtx); | |
429 | } | |
a174a3c5 | 430 | if (!aPrevTexture.IsNull()) |
431 | { | |
432 | theWorkspace->EnableTexture (aPrevTexture); | |
433 | } | |
434 | } | |
2166f0fa | 435 | |
a174a3c5 | 436 | // ======================================================================= |
437 | // function : Render | |
438 | // purpose : | |
439 | // ======================================================================= | |
440 | void OpenGl_Text::Render (const Handle(OpenGl_PrinterContext)& thePrintCtx, | |
441 | const Handle(OpenGl_Context)& theCtx, | |
442 | const OpenGl_AspectText& theTextAspect) const | |
443 | { | |
444 | render (thePrintCtx, theCtx, theTextAspect, theTextAspect.Color(), theTextAspect.SubtitleColor()); | |
445 | } | |
2166f0fa | 446 | |
a174a3c5 | 447 | // ======================================================================= |
448 | // function : setupMatrix | |
449 | // purpose : | |
450 | // ======================================================================= | |
451 | void OpenGl_Text::setupMatrix (const Handle(OpenGl_PrinterContext)& thePrintCtx, | |
ca3c13d1 | 452 | const Handle(OpenGl_Context)& theCtx, |
a174a3c5 | 453 | const OpenGl_AspectText& theTextAspect, |
454 | const OpenGl_Vec3 theDVec) const | |
455 | { | |
456 | // setup matrix | |
ca3c13d1 | 457 | #if !defined(GL_ES_VERSION_2_0) |
a174a3c5 | 458 | if (myIs2d) |
bf75be98 | 459 | { |
a174a3c5 | 460 | glLoadIdentity(); |
461 | glTranslatef (myPoint.x() + theDVec.x(), myPoint.y() + theDVec.y(), 0.0f); | |
03e04ead | 462 | glScalef (1.0f, -1.0f, 1.0f); |
463 | glRotatef (theTextAspect.Angle(), 0.0, 0.0, 1.0); | |
2166f0fa SK |
464 | } |
465 | else | |
466 | { | |
a174a3c5 | 467 | // align coordinates to the nearest integer |
468 | // to avoid extra interpolation issues | |
469 | GLdouble anObjX, anObjY, anObjZ; | |
470 | gluUnProject (std::floor (myWinX + (GLdouble )theDVec.x()), | |
471 | std::floor (myWinY + (GLdouble )theDVec.y()), | |
472 | myWinZ + (GLdouble )theDVec.z(), | |
473 | (GLdouble* )THE_IDENTITY_MATRIX, myProjMatrix, myViewport, | |
474 | &anObjX, &anObjY, &anObjZ); | |
475 | ||
476 | glLoadIdentity(); | |
ca3c13d1 | 477 | theCtx->core11->glTranslated (anObjX, anObjY, anObjZ); |
478 | theCtx->core11->glRotated (theTextAspect.Angle(), 0.0, 0.0, 1.0); | |
a174a3c5 | 479 | if (!theTextAspect.IsZoomable()) |
480 | { | |
481 | #ifdef _WIN32 | |
482 | // if the context has assigned printer context, use it's parameters | |
483 | if (!thePrintCtx.IsNull()) | |
484 | { | |
485 | // get printing scaling in x and y dimensions | |
486 | GLfloat aTextScalex = 1.0f, aTextScaley = 1.0f; | |
487 | thePrintCtx->GetScale (aTextScalex, aTextScaley); | |
488 | ||
489 | // text should be scaled in all directions with same | |
490 | // factor to save its proportions, so use height (y) scaling | |
491 | // as it is better for keeping text/3d graphics proportions | |
ca3c13d1 | 492 | theCtx->core11->glScaled ((GLfloat )aTextScaley, (GLfloat )aTextScaley, (GLfloat )aTextScaley); |
a174a3c5 | 493 | } |
494 | #endif | |
ca3c13d1 | 495 | theCtx->core11->glScaled (myScaleHeight, myScaleHeight, myScaleHeight); |
a174a3c5 | 496 | } |
497 | } | |
ca3c13d1 | 498 | #endif |
a174a3c5 | 499 | } |
500 | ||
501 | // ======================================================================= | |
502 | // function : drawText | |
503 | // purpose : | |
504 | // ======================================================================= | |
35e08fe8 | 505 | |
506 | void OpenGl_Text::drawText (const Handle(OpenGl_PrinterContext)& , | |
a174a3c5 | 507 | const Handle(OpenGl_Context)& theCtx, |
35e08fe8 | 508 | #ifdef HAVE_GL2PS |
a174a3c5 | 509 | const OpenGl_AspectText& theTextAspect) const |
35e08fe8 | 510 | #else |
511 | const OpenGl_AspectText& ) const | |
512 | #endif | |
a174a3c5 | 513 | { |
514 | #ifdef HAVE_GL2PS | |
515 | if (theCtx->IsFeedback()) | |
516 | { | |
517 | // position of the text and alignment is calculated by transformation matrix | |
518 | exportText (myString, myIs2d, theTextAspect, (Standard_Integer )myExportHeight); | |
519 | return; | |
2166f0fa | 520 | } |
a174a3c5 | 521 | #endif |
2166f0fa | 522 | |
7d3e64ef | 523 | if (myVertsVbo.Length() != myTextures.Length() |
524 | || myTextures.IsEmpty()) | |
2166f0fa | 525 | { |
7d3e64ef | 526 | return; |
2166f0fa | 527 | } |
7d3e64ef | 528 | |
529 | for (Standard_Integer anIter = 0; anIter < myTextures.Length(); ++anIter) | |
a174a3c5 | 530 | { |
7d3e64ef | 531 | const GLuint aTexId = myTextures.Value (anIter); |
532 | glBindTexture (GL_TEXTURE_2D, aTexId); | |
a174a3c5 | 533 | |
7d3e64ef | 534 | const Handle(OpenGl_VertexBuffer)& aVerts = myVertsVbo.Value (anIter); |
535 | const Handle(OpenGl_VertexBuffer)& aTCrds = myTCrdsVbo.Value (anIter); | |
536 | aVerts->BindAttribute (theCtx, Graphic3d_TOA_POS); | |
537 | aTCrds->BindAttribute (theCtx, Graphic3d_TOA_UV); | |
2166f0fa | 538 | |
7d3e64ef | 539 | glDrawArrays (GL_TRIANGLES, 0, GLsizei(aVerts->GetElemsNb())); |
2166f0fa | 540 | |
7d3e64ef | 541 | aVerts->UnbindAttribute (theCtx, Graphic3d_TOA_UV); |
542 | aVerts->UnbindAttribute (theCtx, Graphic3d_TOA_POS); | |
a174a3c5 | 543 | } |
7d3e64ef | 544 | glBindTexture (GL_TEXTURE_2D, 0); |
a174a3c5 | 545 | } |
2166f0fa | 546 | |
a174a3c5 | 547 | // ======================================================================= |
548 | // function : FontKey | |
549 | // purpose : | |
550 | // ======================================================================= | |
551 | TCollection_AsciiString OpenGl_Text::FontKey (const OpenGl_AspectText& theAspect, | |
552 | const Standard_Integer theHeight) | |
553 | { | |
554 | const Font_FontAspect anAspect = (theAspect.FontAspect() != Font_FA_Undefined) ? theAspect.FontAspect() : Font_FA_Regular; | |
555 | return theAspect.FontName() | |
556 | + TCollection_AsciiString(":") + Standard_Integer(anAspect) | |
557 | + TCollection_AsciiString(":") + theHeight; | |
558 | } | |
559 | ||
560 | // ======================================================================= | |
561 | // function : FindFont | |
562 | // purpose : | |
563 | // ======================================================================= | |
564 | Handle(OpenGl_Font) OpenGl_Text::FindFont (const Handle(OpenGl_Context)& theCtx, | |
565 | const OpenGl_AspectText& theAspect, | |
566 | const Standard_Integer theHeight, | |
567 | const TCollection_AsciiString theKey) | |
568 | { | |
569 | Handle(OpenGl_Font) aFont; | |
570 | if (theHeight < 2) | |
2166f0fa | 571 | { |
a174a3c5 | 572 | return aFont; // invalid parameters |
573 | } | |
2166f0fa | 574 | |
a174a3c5 | 575 | if (!theCtx->GetResource (theKey, aFont)) |
576 | { | |
577 | Handle(Font_FontMgr) aFontMgr = Font_FontMgr::GetInstance(); | |
578 | const Handle(TCollection_HAsciiString) aFontName = new TCollection_HAsciiString (theAspect.FontName()); | |
579 | const Font_FontAspect anAspect = (theAspect.FontAspect() != Font_FA_Undefined) ? theAspect.FontAspect() : Font_FA_Regular; | |
580 | Handle(Font_SystemFont) aRequestedFont = aFontMgr->FindFont (aFontName, anAspect, theHeight); | |
581 | if (aRequestedFont.IsNull()) | |
2166f0fa | 582 | { |
a174a3c5 | 583 | return aFont; |
584 | } | |
585 | ||
586 | Handle(Font_FTFont) aFontFt = new Font_FTFont (NULL); | |
587 | if (!aFontFt->Init (aRequestedFont->FontPath()->ToCString(), theHeight)) | |
588 | { | |
589 | return aFont; | |
590 | } | |
591 | ||
592 | Handle(OpenGl_Context) aCtx = theCtx; | |
ca3c13d1 | 593 | #if !defined(GL_ES_VERSION_2_0) |
a174a3c5 | 594 | glPushAttrib (GL_TEXTURE_BIT); |
ca3c13d1 | 595 | #endif |
a174a3c5 | 596 | aFont = new OpenGl_Font (aFontFt, theKey); |
597 | if (!aFont->Init (aCtx)) | |
598 | { | |
599 | //glPopAttrib(); | |
600 | //return aFont; // out of resources? | |
601 | } | |
ca3c13d1 | 602 | #if !defined(GL_ES_VERSION_2_0) |
a174a3c5 | 603 | glPopAttrib(); // texture bit |
ca3c13d1 | 604 | #endif |
a174a3c5 | 605 | |
606 | aCtx->ShareResource (theKey, aFont); | |
607 | } | |
608 | return aFont; | |
609 | } | |
610 | ||
611 | // ======================================================================= | |
612 | // function : render | |
613 | // purpose : | |
614 | // ======================================================================= | |
615 | void OpenGl_Text::render (const Handle(OpenGl_PrinterContext)& thePrintCtx, | |
616 | const Handle(OpenGl_Context)& theCtx, | |
617 | const OpenGl_AspectText& theTextAspect, | |
618 | const TEL_COLOUR& theColorText, | |
619 | const TEL_COLOUR& theColorSubs) const | |
620 | { | |
621 | if (myString.IsEmpty()) | |
622 | { | |
623 | return; | |
624 | } | |
625 | ||
626 | const TCollection_AsciiString aFontKey = FontKey (theTextAspect, myParams.Height); | |
627 | if (!myFont.IsNull() | |
628 | && !myFont->ResourceKey().IsEqual (aFontKey)) | |
629 | { | |
630 | // font changed | |
10b9c7df | 631 | const_cast<OpenGl_Text* > (this)->Release (theCtx.operator->()); |
a174a3c5 | 632 | } |
633 | ||
634 | if (myFont.IsNull()) | |
635 | { | |
636 | myFont = FindFont (theCtx, theTextAspect, myParams.Height, aFontKey); | |
637 | if (myFont.IsNull()) | |
638 | { | |
639 | return; | |
640 | } | |
641 | } | |
642 | ||
643 | if (myTextures.IsEmpty()) | |
644 | { | |
645 | OpenGl_TextFormatter aFormatter; | |
646 | aFormatter.SetupAlignment (myParams.HAlign, myParams.VAlign); | |
647 | aFormatter.Reset(); | |
648 | aFormatter.Append (theCtx, myString, *myFont.operator->()); | |
649 | aFormatter.Format(); | |
650 | ||
7d3e64ef | 651 | aFormatter.Result (theCtx, myTextures, myVertsVbo, myTCrdsVbo); |
a174a3c5 | 652 | aFormatter.BndBox (myBndBox); |
653 | } | |
654 | ||
655 | if (myTextures.IsEmpty()) | |
656 | { | |
657 | return; | |
658 | } | |
659 | ||
660 | myExportHeight = 1.0f; | |
661 | myScaleHeight = 1.0f; | |
662 | ||
ca3c13d1 | 663 | #if !defined(GL_ES_VERSION_2_0) |
a174a3c5 | 664 | glMatrixMode (GL_MODELVIEW); |
665 | glPushMatrix(); | |
666 | if (!myIs2d) | |
667 | { | |
668 | // retrieve active matrices for project/unproject calls | |
669 | glGetDoublev (GL_MODELVIEW_MATRIX, myModelMatrix); | |
670 | glGetDoublev (GL_PROJECTION_MATRIX, myProjMatrix); | |
671 | glGetIntegerv (GL_VIEWPORT, myViewport); | |
672 | gluProject (myPoint.x(), myPoint.y(), myPoint.z(), | |
673 | myModelMatrix, myProjMatrix, myViewport, | |
674 | &myWinX, &myWinY, &myWinZ); | |
675 | ||
676 | // compute scale factor for constant text height | |
677 | GLdouble x1, y1, z1; | |
678 | gluUnProject (myWinX, myWinY, myWinZ, | |
679 | (GLdouble* )THE_IDENTITY_MATRIX, myProjMatrix, myViewport, | |
680 | &x1, &y1, &z1); | |
681 | ||
682 | GLdouble x2, y2, z2; | |
683 | const GLdouble h = (GLdouble )myFont->FTFont()->PointSize(); | |
353474f0 | 684 | gluUnProject (myWinX, myWinY + h, myWinZ, |
a174a3c5 | 685 | (GLdouble* )THE_IDENTITY_MATRIX, myProjMatrix, myViewport, |
686 | &x2, &y2, &z2); | |
687 | ||
688 | myScaleHeight = (y2 - y1) / h; | |
689 | if (theTextAspect.IsZoomable()) | |
690 | { | |
691 | myExportHeight = (float )h; | |
692 | } | |
693 | } | |
694 | myExportHeight = (float )myFont->FTFont()->PointSize() / myExportHeight; | |
695 | ||
696 | // push enabled flags to the stack | |
697 | glPushAttrib (GL_ENABLE_BIT); | |
5322131b | 698 | glDisable (GL_LIGHTING); |
a174a3c5 | 699 | |
700 | // setup depth test | |
701 | if (!myIs2d | |
702 | && theTextAspect.StyleType() != Aspect_TOST_ANNOTATION) | |
703 | { | |
704 | glEnable (GL_DEPTH_TEST); | |
705 | } | |
706 | else | |
707 | { | |
708 | glDisable (GL_DEPTH_TEST); | |
709 | } | |
710 | ||
ca3c13d1 | 711 | |
a174a3c5 | 712 | // setup alpha test |
713 | GLint aTexEnvParam = GL_REPLACE; | |
714 | glGetTexEnviv (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, &aTexEnvParam); | |
715 | if (aTexEnvParam != GL_REPLACE) | |
716 | { | |
717 | glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); | |
718 | } | |
719 | glAlphaFunc (GL_GEQUAL, 0.285f); | |
720 | glEnable (GL_ALPHA_TEST); | |
721 | ||
722 | // setup blending | |
723 | glEnable (GL_BLEND); | |
724 | glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); // GL_ONE | |
725 | ||
726 | // activate texture unit | |
727 | glDisable (GL_TEXTURE_1D); | |
728 | glEnable (GL_TEXTURE_2D); | |
01ca42b2 | 729 | if (theCtx->core15fwd != NULL) |
a174a3c5 | 730 | { |
01ca42b2 | 731 | theCtx->core15fwd->glActiveTexture (GL_TEXTURE0); |
a174a3c5 | 732 | } |
733 | ||
25ef750e | 734 | // unbind current OpenGL sampler |
735 | const Handle(OpenGl_Sampler)& aSampler = theCtx->TextureSampler(); | |
736 | if (!aSampler.IsNull() && aSampler->IsValid()) | |
737 | { | |
738 | aSampler->Unbind (*theCtx); | |
739 | } | |
740 | ||
a174a3c5 | 741 | // extra drawings |
742 | switch (theTextAspect.DisplayType()) | |
743 | { | |
2166f0fa | 744 | case Aspect_TODT_BLEND: |
a174a3c5 | 745 | { |
746 | glEnable (GL_COLOR_LOGIC_OP); | |
747 | glLogicOp (GL_XOR); | |
2166f0fa | 748 | break; |
a174a3c5 | 749 | } |
2166f0fa SK |
750 | case Aspect_TODT_SUBTITLE: |
751 | { | |
ca3c13d1 | 752 | theCtx->core11->glColor3fv (theColorSubs.rgb); |
a174a3c5 | 753 | setupMatrix (thePrintCtx, theCtx, theTextAspect, OpenGl_Vec3 (0.0f, 0.0f, 0.00001f)); |
754 | ||
755 | glBindTexture (GL_TEXTURE_2D, 0); | |
756 | glBegin (GL_QUADS); | |
757 | glVertex2f (myBndBox.Left, myBndBox.Top); | |
758 | glVertex2f (myBndBox.Right, myBndBox.Top); | |
759 | glVertex2f (myBndBox.Right, myBndBox.Bottom); | |
760 | glVertex2f (myBndBox.Left, myBndBox.Bottom); | |
2166f0fa SK |
761 | glEnd(); |
762 | break; | |
763 | } | |
2166f0fa | 764 | case Aspect_TODT_DEKALE: |
a174a3c5 | 765 | { |
ca3c13d1 | 766 | theCtx->core11->glColor3fv (theColorSubs.rgb); |
a174a3c5 | 767 | setupMatrix (thePrintCtx, theCtx, theTextAspect, OpenGl_Vec3 (+1.0f, +1.0f, 0.00001f)); |
768 | drawText (thePrintCtx, theCtx, theTextAspect); | |
769 | setupMatrix (thePrintCtx, theCtx, theTextAspect, OpenGl_Vec3 (-1.0f, -1.0f, 0.00001f)); | |
770 | drawText (thePrintCtx, theCtx, theTextAspect); | |
771 | setupMatrix (thePrintCtx, theCtx, theTextAspect, OpenGl_Vec3 (-1.0f, +1.0f, 0.00001f)); | |
772 | drawText (thePrintCtx, theCtx, theTextAspect); | |
773 | setupMatrix (thePrintCtx, theCtx, theTextAspect, OpenGl_Vec3 (+1.0f, -1.0f, 0.00001f)); | |
774 | drawText (thePrintCtx, theCtx, theTextAspect); | |
775 | break; | |
776 | } | |
a6eb515f | 777 | case Aspect_TODT_DIMENSION: |
a174a3c5 | 778 | case Aspect_TODT_NORMAL: |
779 | { | |
2166f0fa SK |
780 | break; |
781 | } | |
782 | } | |
783 | ||
a174a3c5 | 784 | // main draw call |
ca3c13d1 | 785 | theCtx->core11->glColor3fv (theColorText.rgb); |
a174a3c5 | 786 | setupMatrix (thePrintCtx, theCtx, theTextAspect, OpenGl_Vec3 (0.0f, 0.0f, 0.0f)); |
787 | drawText (thePrintCtx, theCtx, theTextAspect); | |
2166f0fa | 788 | |
a174a3c5 | 789 | glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, aTexEnvParam); |
543f0db0 | 790 | |
791 | if (theTextAspect.DisplayType() == Aspect_TODT_DIMENSION) | |
792 | { | |
793 | setupMatrix (thePrintCtx, theCtx, theTextAspect, OpenGl_Vec3 (0.0f, 0.0f, 0.00001f)); | |
794 | ||
795 | glDisable (GL_BLEND); | |
796 | glDisable (GL_TEXTURE_2D); | |
797 | glDisable (GL_ALPHA_TEST); | |
798 | if (!myIs2d) | |
799 | { | |
800 | glDisable (GL_DEPTH_TEST); | |
801 | } | |
802 | glColorMask (GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); | |
803 | ||
804 | glClear (GL_STENCIL_BUFFER_BIT); | |
805 | glEnable (GL_STENCIL_TEST); | |
806 | glStencilFunc (GL_ALWAYS, 1, 0xFF); | |
807 | glStencilOp (GL_KEEP, GL_KEEP, GL_REPLACE); | |
808 | ||
809 | glBegin (GL_QUADS); | |
810 | glVertex2f (myBndBox.Left, myBndBox.Top); | |
811 | glVertex2f (myBndBox.Right, myBndBox.Top); | |
812 | glVertex2f (myBndBox.Right, myBndBox.Bottom); | |
813 | glVertex2f (myBndBox.Left, myBndBox.Bottom); | |
814 | glEnd(); | |
815 | ||
816 | glStencilFunc (GL_ALWAYS, 0, 0xFF); | |
817 | // glPopAttrib() will reset state for us | |
818 | //glDisable (GL_STENCIL_TEST); | |
819 | //if (!myIs2d) glEnable (GL_DEPTH_TEST); | |
820 | ||
821 | glColorMask (GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); | |
822 | } | |
823 | ||
824 | // revert OpenGL state | |
a174a3c5 | 825 | glPopAttrib(); // enable bit |
826 | glPopMatrix(); // model view matrix was modified | |
25ef750e | 827 | |
828 | // revert custom OpenGL sampler | |
829 | if (!aSampler.IsNull() && aSampler->IsValid()) | |
830 | { | |
831 | aSampler->Bind (*theCtx); | |
832 | } | |
ca3c13d1 | 833 | #endif |
5e27df78 | 834 | } |