source: trunk/source/visualization/OpenGL/src/G4OpenGLXViewer.cc @ 897

Last change on this file since 897 was 897, checked in by garnier, 16 years ago

suppres des debug et modif des WinSize
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File size: 17.5 KB
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26//
27// $Id: G4OpenGLXViewer.cc,v 1.42 2007/05/25 10:47:17 allison Exp $
28// GEANT4 tag $Name: HEAD $
29//
30//
31// Andrew Walkden  7th February 1997
32// G4OpenGLXViewer : Class to provide XWindows specific
33//                 functionality for OpenGL in GEANT4
34
35#ifdef G4VIS_BUILD_OPENGLX_DRIVER
36
37#include "G4OpenGLXViewer.hh"
38
39#include "G4OpenGLFontBaseStore.hh"
40
41#include <sstream>
42
43#include "G4VisExtent.hh"
44#include "G4LogicalVolume.hh"
45#include "G4VSolid.hh"
46#include "G4Point3D.hh"
47#include "G4Normal3D.hh"
48
49#include <X11/Xatom.h>
50#include <X11/Xutil.h>
51
52#include <assert.h>
53
54int G4OpenGLXViewer::snglBuf_RGBA[12] =
55{ GLX_RGBA,
56  GLX_RED_SIZE, 1,
57  GLX_GREEN_SIZE, 1,
58  GLX_BLUE_SIZE, 1,
59  GLX_DEPTH_SIZE, 1,
60  GLX_STENCIL_SIZE, 1,
61  None };
62
63int G4OpenGLXViewer::dblBuf_RGBA[13] =
64{ GLX_RGBA,
65  GLX_RED_SIZE, 1,
66  GLX_GREEN_SIZE, 1,
67  GLX_BLUE_SIZE, 1,
68  GLX_DOUBLEBUFFER,
69  GLX_DEPTH_SIZE, 1,
70  GLX_STENCIL_SIZE, 1,
71  None };
72
73#define NewString(str) \
74 ((str) != NULL ? (strcpy((char*)malloc((unsigned)strlen(str) + 1), str)) : (char*)NULL)
75
76#define USE_DEFAULT_COLORMAP 1
77#define USE_STANDARD_COLORMAP 0
78
79XVisualInfo*  G4OpenGLXViewer::vi_single_buffer = 0;
80XVisualInfo*  G4OpenGLXViewer::vi_double_buffer = 0;
81
82extern "C" {
83  static Bool G4OpenGLXViewerWaitForNotify (Display*, XEvent* e, char* arg) {
84    return (e->type == MapNotify) && (e->xmap.window == (Window) arg);
85  }
86}
87
88void G4OpenGLXViewer::SetView () {
89  glXMakeCurrent (dpy, win, cx);
90  G4OpenGLViewer::SetView (); 
91}
92
93void G4OpenGLXViewer::ShowView () {
94  glXWaitGL (); //Wait for effects of all previous OpenGL commands to
95                //be propagated before progressing.
96  glFlush ();
97
98  if (fVP.IsPicking()) {
99    G4cout <<
100      "Window activated for picking (left-mouse), exit (middle-mouse)."
101           << G4endl;
102    while (true) {
103      if (XPending(dpy)) {
104        XNextEvent(dpy, &event);
105        if (event.type == ButtonPress && event.xbutton.button == 1) {
106          Pick(event.xbutton.x, event.xbutton.y);
107        }
108        else if (event.type == ButtonPress && event.xbutton.button == 2) break;
109      }
110    }
111  }
112}
113
114void G4OpenGLXViewer::GetXConnection () {
115// get a connection.
116  dpy = XOpenDisplay (0);
117  if (!dpy) {
118    fViewId = -1;  // This flags an error.
119    G4cerr << "G4OpenGLViewer::G4OpenGLViewer couldn't open display." << G4endl;
120    return;
121  }
122
123// make sure OpenGL is supported and installed properly.
124  if (!glXQueryExtension (dpy, &errorBase, &eventBase)) {
125    fViewId = -1;  // This flags an error.
126    G4cerr << "G4OpenGLViewer::G4OpenGLViewer X Server has no GLX extension."
127         << G4endl;
128    return;
129  }
130
131}
132
133void G4OpenGLXViewer::CreateGLXContext (XVisualInfo* v) {
134
135  vi = v;
136// get window's attributes
137  if (!XGetWindowAttributes(dpy, XRootWindow (dpy, vi -> screen), &xwa)) {
138    fViewId = -1;  // This flags an error.
139    G4cerr << "G4OpenGLViewer::G4OpenGLViewer couldn't return window attributes"
140         << G4endl;
141    return;
142  }
143 
144// create a GLX context
145  cx = glXCreateContext (dpy, vi, 0, true);
146  if (!cx) {
147    fViewId = -1;  // This flags an error.
148    G4cerr << "G4OpenGLViewer::G4OpenGLViewer couldn't create context."
149         << G4endl;
150    return;
151  }
152
153// New stab at getting a colormap
154
155  Status status;
156  XStandardColormap *standardCmaps = XAllocStandardColormap ();
157  int i, numCmaps;
158
159  status = XmuLookupStandardColormap (dpy,
160                                      vi -> screen,
161                                      vi -> visualid,
162                                      vi -> depth,
163                                      XA_RGB_DEFAULT_MAP,
164                                      False,
165                                      True);
166 
167  if (status == 1) {
168    cmap = 0;
169    status = XGetRGBColormaps (dpy,
170                               XRootWindow (dpy, vi -> screen),
171                               &standardCmaps,
172                               &numCmaps,
173                               XA_RGB_DEFAULT_MAP);
174    if (status == 1)
175      for (i = 0; i < numCmaps; i++) {
176        if (standardCmaps[i].visualid == vi -> visualid) {
177          cmap = standardCmaps[i].colormap;
178          XFree (standardCmaps);
179          break;
180        }
181      }
182    if (!cmap) {
183      fViewId = -1;  // This flags an error.
184      G4cerr <<
185   "G4OpenGLViewer::G4OpenGLViewer failed to allocate a standard colormap."
186             << G4endl;
187      return;
188    }
189    G4cout << "Got standard cmap" << G4endl;
190  } else {
191    cmap = XCreateColormap (dpy,
192                            XRootWindow(dpy, vi -> screen),
193                            vi -> visual,
194                            AllocNone);
195    G4cout << "Created own cmap" << G4endl;
196  }
197
198  if (!cmap) {
199    fViewId = -1;  // This flags an error.
200    G4cerr << "G4OpenGLViewer::G4OpenGLViewer failed to allocate a Colormap."
201         << G4endl;
202    return;
203  }
204
205}
206 
207void G4OpenGLXViewer::CreateMainWindow () {
208 
209// create a window
210  swa.colormap = cmap;
211  swa.border_pixel = 0;
212  swa.event_mask = ExposureMask | ButtonPressMask | StructureNotifyMask;
213  swa.backing_store = WhenMapped;
214
215  // Window size and position...
216  G4int x_origin = 0;
217  G4int y_origin = 0;
218  size_hints = XAllocSizeHints();
219
220  Window root_return;
221  int x_return, y_return;
222  unsigned int width_return, height_return;
223  unsigned int border_width_return;
224  unsigned int depth_return;
225 
226  // get the parent window's geometry
227  XGetGeometry(dpy, XRootWindow (dpy, vi -> screen), &root_return, &x_return, &y_return,
228               &width_return, &height_return, &border_width_return,
229               &depth_return);
230 
231  fWinSize_x = fVP.GetWindowSizeHintX();
232  fWinSize_y = fVP.GetWindowSizeHintY();
233  x_origin = fVP.GetWindowAbsoluteLocationHintX(width_return);
234  y_origin = fVP.GetWindowAbsoluteLocationHintY(height_return);
235  size_hints->base_width = fWinSize_x;
236  size_hints->base_height = fWinSize_y;
237  size_hints->x = x_origin;
238  size_hints->y = y_origin;
239  size_hints->flags |= PSize | PPosition;
240#ifdef G4DEBUG
241  printf("G4OpenGLXViewer::CreateMainWindow CreateWindow Size:W:%d H:%d X:%d Y:%d \n",fWinSize_x,fWinSize_y,x_origin,y_origin);
242#endif
243
244  G4cout << "Window name: " << fName << G4endl;
245  strncpy (charViewName, fName, 100);
246  char *window_name = charViewName;
247  char *icon_name = charViewName;
248  //char tmpatom[] = "XA_WM_NORMAL_HINTS";
249  wm_hints = XAllocWMHints();
250  class_hints = XAllocClassHint();
251
252  XStringListToTextProperty (&window_name, 1, &windowName);
253  XStringListToTextProperty (&icon_name, 1, &iconName);
254
255  wm_hints -> initial_state = NormalState;
256  wm_hints -> input = True;
257  wm_hints -> icon_pixmap = icon_pixmap;
258  wm_hints -> flags = StateHint | IconPixmapHint | InputHint;
259
260  class_hints -> res_name  = NewString("G4OpenGL");
261  class_hints -> res_class = NewString("G4OpenGL");
262
263   win = XCreateWindow (dpy, XRootWindow (dpy, vi -> screen), x_origin,
264                        y_origin, fWinSize_x, fWinSize_y, 0, vi -> depth,
265                        InputOutput, vi -> visual, 
266                        CWBorderPixel | CWColormap |
267                        CWEventMask | CWBackingStore,
268                        &swa);
269 
270   XSetWMProperties (dpy, win, &windowName, &iconName, 0, 0,
271                     size_hints, wm_hints, class_hints);
272 
273// request X to Draw window on screen.
274  XMapWindow (dpy, win);
275
276// Wait for window to appear (wait for an "expose" event).
277  XIfEvent (dpy, &event, G4OpenGLXViewerWaitForNotify, (char*) win);
278
279// connect the context to a window
280  Bool success = glXMakeCurrent (dpy, win, cx);
281  if (!success) {
282    fViewId = -1;  // This flags an error.
283    G4cerr << "G4OpenGLViewer::G4OpenGLViewer failed to attach a GLX context."
284         << G4endl;
285    GLint error = GL_NO_ERROR;
286    while ((error = glGetError()) != GL_NO_ERROR) {
287      G4cout << "GL Error: " << gluErrorString(error) << G4endl;
288    }
289    return;
290  }
291
292}
293
294void G4OpenGLXViewer::CreateFontLists () {
295
296  std::map<G4double,G4String> fonts;  // G4VMarker screen size and font name.
297  fonts[10.] = "-adobe-courier-bold-r-normal--10-100-75-75-m-60-iso8859-1";
298  fonts[11.] = "-adobe-courier-bold-r-normal--11-80-100-100-m-60-iso8859-1";
299  fonts[12.] = "-adobe-courier-bold-r-normal--12-120-75-75-m-70-iso8859-1";
300  fonts[13.] = "fixed";
301  fonts[14.] = "-adobe-courier-bold-r-normal--14-100-100-100-m-90-iso8859-1";
302  fonts[17.] = "-adobe-courier-bold-r-normal--17-120-100-100-m-100-iso8859-1";
303  fonts[18.] = "-adobe-courier-bold-r-normal--18-180-75-75-m-110-iso8859-1";
304  fonts[20.] = "-adobe-courier-bold-r-normal--20-140-100-100-m-110-iso8859-1";
305  fonts[24.] = "-adobe-courier-bold-r-normal--24-240-75-75-m-150-iso8859-1";
306  fonts[25.] = "-adobe-courier-bold-r-normal--25-180-100-100-m-150-iso8859-1";
307  fonts[34.] = "-adobe-courier-bold-r-normal--34-240-100-100-m-200-iso8859-1";
308  std::map<G4double,G4String>::const_iterator i;
309  for (i = fonts.begin(); i != fonts.end(); ++i) {
310    XFontStruct* font_info = XLoadQueryFont(dpy, i->second);
311    if (!font_info) {
312      G4cerr <<
313        "G4OpenGLXViewer: XLoadQueryFont failed for font\n  "
314             << i->second
315             << G4endl;
316      continue;
317    }
318    G4int font_base = glGenLists(256);
319    if (!font_base) {
320      G4cerr << "G4OpenGLXViewer: out of display lists for fonts."
321             << G4endl;
322      continue;
323    }
324    G4int first = font_info->min_char_or_byte2;
325    G4int last  = font_info->max_char_or_byte2;
326    glXUseXFont(font_info->fid, first, last-first+1,font_base+first);
327    G4OpenGLFontBaseStore::AddFontBase(this,font_base,i->first,i->second);
328  }
329}
330
331G4OpenGLXViewer::G4OpenGLXViewer (G4OpenGLSceneHandler& scene):
332G4VViewer (scene, -1),
333G4OpenGLViewer (scene),
334vi_immediate (0),
335vi_stored (0),
336vi (0),
337cmap (0)
338{
339  GetXConnection ();
340  if (fViewId < 0) return;
341 
342  // Try for a visual suitable for OpenGLImmediate..
343  // first try for a single buffered RGB window
344  if (!vi_single_buffer) {
345    vi_single_buffer =
346      glXChooseVisual (dpy, XDefaultScreen (dpy), snglBuf_RGBA);
347  }
348  if (!vi_double_buffer) {
349    vi_double_buffer =
350      glXChooseVisual (dpy, XDefaultScreen (dpy), dblBuf_RGBA);
351  }
352
353  if (vi_single_buffer || vi_double_buffer) {
354    if (!vi_double_buffer) {
355      G4cout <<
356        "G4OpenGLXViewer::G4OpenGLXViewer: unable to get a double buffer visual."
357        "\n  Working with a single buffer."
358             << G4endl;
359    }
360  } else {
361    if (!vi_single_buffer) {
362      G4cout <<
363        "G4OpenGLXViewer::G4OpenGLXViewer: unable to get a single buffer visual."
364             << G4endl;
365    }
366    if (!vi_double_buffer) {
367      G4cout <<
368        "G4OpenGLXViewer::G4OpenGLXViewer: unable to get a double buffer visual."
369             << G4endl;
370    }
371  }
372
373  if (vi_single_buffer) {
374    vi_immediate = vi_single_buffer;
375    attributeList = snglBuf_RGBA;
376  }
377 
378  if (!vi_immediate){
379    // next try for a double buffered RGB, but Draw to top buffer
380    if (vi_double_buffer) {
381      vi_immediate = vi_double_buffer;
382      attributeList = dblBuf_RGBA;
383    }
384  }
385
386  // Now try for a visual suitable for OpenGLStored...
387  // Try for a double buffered RGB window
388  if (vi_double_buffer) {
389    vi_stored = vi_double_buffer;
390    attributeList = dblBuf_RGBA;
391  }
392
393  if (!vi_immediate || !vi_stored) {
394    G4cout <<
395    "G4OpenGLXViewer::G4OpenGLXViewer: unable to get required visuals."
396           << G4endl;
397    fViewId = -1;  // This flags an error.
398  }
399
400  //  glClearColor (0., 0., 0., 0.);
401  //  glClearDepth (1.);
402}
403
404G4OpenGLXViewer::~G4OpenGLXViewer () {
405  if (fViewId >= 0) {
406    //Close a window from here
407    glXMakeCurrent (dpy, None, NULL);
408    glXDestroyContext (dpy, cx);
409    if (win) XDestroyWindow (dpy, win); // ...if already deleted in
410    // sub-class G4OpenGLXmViewer.
411    XFlush (dpy);
412  }
413}
414
415void G4OpenGLXViewer::print() {
416 
417  //using namespace std;
418  //cout << "print_col_callback requested with file name: " << print_string << G4endl;
419 
420  if (vectored_ps) {
421
422    G4OpenGLViewer::print();
423
424  } else {
425
426    XVisualInfo* pvi;
427    GLXContext pcx = create_GL_print_context(pvi);
428
429    if (!pcx) {
430      G4cout << "Unable to create print context." << G4endl;
431      return;
432    }
433
434    GLXContext tmp_cx;
435    tmp_cx = cx;
436    cx=pcx;
437   
438    Pixmap pmap = XCreatePixmap (dpy,
439                                 XRootWindow (dpy, pvi->screen),
440                                 fWinSize_x, fWinSize_y,
441                                 pvi->depth);
442   
443    GLXPixmap glxpmap = glXCreateGLXPixmap (dpy,
444                                            pvi,
445                                            pmap);
446   
447    GLXDrawable tmp_win;
448    tmp_win=win;
449    win=glxpmap;
450   
451    glXMakeCurrent (dpy,
452                    win,
453                    cx);
454   
455    glViewport (0, 0, fWinSize_x, fWinSize_y);
456   
457    ClearView ();
458    SetView ();
459    DrawView ();
460   
461    generateEPS (print_string,
462                 print_colour,
463                 fWinSize_x, fWinSize_y);
464   
465    win=tmp_win;
466    cx=tmp_cx;
467   
468    glXMakeCurrent (dpy,
469                    win,
470                    cx);
471   
472  }
473
474}
475
476GLubyte* G4OpenGLXViewer::grabPixels (int inColor, unsigned int width, unsigned int height) {
477 
478  GLubyte* buffer;
479  GLint swapbytes, lsbfirst, rowlength;
480  GLint skiprows, skippixels, alignment;
481  GLenum format;
482  int size;
483
484  if (inColor) {
485    format = GL_RGB;
486    size = width*height*3;
487  } else {
488    format = GL_LUMINANCE;
489    size = width*height*1;
490  }
491
492  buffer = new GLubyte[size];
493  if (buffer == NULL)
494    return NULL;
495
496  glGetIntegerv (GL_UNPACK_SWAP_BYTES, &swapbytes);
497  glGetIntegerv (GL_UNPACK_LSB_FIRST, &lsbfirst);
498  glGetIntegerv (GL_UNPACK_ROW_LENGTH, &rowlength);
499
500  glGetIntegerv (GL_UNPACK_SKIP_ROWS, &skiprows);
501  glGetIntegerv (GL_UNPACK_SKIP_PIXELS, &skippixels);
502  glGetIntegerv (GL_UNPACK_ALIGNMENT, &alignment);
503
504  glPixelStorei (GL_UNPACK_SWAP_BYTES, GL_FALSE);
505  glPixelStorei (GL_UNPACK_LSB_FIRST, GL_FALSE);
506  glPixelStorei (GL_UNPACK_ROW_LENGTH, 0);
507
508  glPixelStorei (GL_UNPACK_SKIP_ROWS, 0);
509  glPixelStorei (GL_UNPACK_SKIP_PIXELS, 0);
510  glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
511
512  glReadPixels (0, 0, (GLsizei)width, (GLsizei)height, format, GL_UNSIGNED_BYTE, (GLvoid*) buffer);
513
514  glPixelStorei (GL_UNPACK_SWAP_BYTES, swapbytes);
515  glPixelStorei (GL_UNPACK_LSB_FIRST, lsbfirst);
516  glPixelStorei (GL_UNPACK_ROW_LENGTH, rowlength);
517 
518  glPixelStorei (GL_UNPACK_SKIP_ROWS, skiprows);
519  glPixelStorei (GL_UNPACK_SKIP_PIXELS, skippixels);
520  glPixelStorei (GL_UNPACK_ALIGNMENT, alignment);
521 
522  return buffer;
523}
524
525int G4OpenGLXViewer::generateEPS (char* filnam,
526                                int inColour,
527                                unsigned int width,
528                                unsigned int height) {
529
530  FILE* fp;
531  GLubyte* pixels;
532  GLubyte* curpix;
533  int components, pos, i;
534
535  pixels = grabPixels (inColour, width, height);
536
537  if (pixels == NULL)
538    return 1;
539  if (inColour) {
540    components = 3;
541  } else {
542    components = 1;
543  }
544 
545  fp = fopen (filnam, "w");
546  if (fp == NULL) {
547    return 2;
548  }
549 
550  fprintf (fp, "%%!PS-Adobe-2.0 EPSF-1.2\n");
551  fprintf (fp, "%%%%Title: %s\n", filnam);
552  fprintf (fp, "%%%%Creator: OpenGL pixmap render output\n");
553  fprintf (fp, "%%%%BoundingBox: 0 0 %d %d\n", width, height);
554  fprintf (fp, "%%%%EndComments\n");
555  fprintf (fp, "gsave\n");
556  fprintf (fp, "/bwproc {\n");
557  fprintf (fp, "    rgbproc\n");
558  fprintf (fp, "    dup length 3 idiv string 0 3 0 \n");
559  fprintf (fp, "    5 -1 roll {\n");
560  fprintf (fp, "    add 2 1 roll 1 sub dup 0 eq\n");
561  fprintf (fp, "    { pop 3 idiv 3 -1 roll dup 4 -1 roll dup\n");
562  fprintf (fp, "       3 1 roll 5 -1 roll } put 1 add 3 0 \n");
563  fprintf (fp, "    { 2 1 roll } ifelse\n");
564  fprintf (fp, "    }forall\n");
565  fprintf (fp, "    pop pop pop\n");
566  fprintf (fp, "} def\n");
567  fprintf (fp, "systemdict /colorimage known not {\n");
568  fprintf (fp, "   /colorimage {\n");
569  fprintf (fp, "       pop\n");
570  fprintf (fp, "       pop\n");
571  fprintf (fp, "       /rgbproc exch def\n");
572  fprintf (fp, "       { bwproc } image\n");
573  fprintf (fp, "   }  def\n");
574  fprintf (fp, "} if\n");
575  fprintf (fp, "/picstr %d string def\n", width * components);
576  fprintf (fp, "%d %d scale\n", width, height);
577  fprintf (fp, "%d %d %d\n", width, height, 8);
578  fprintf (fp, "[%d 0 0 %d 0 0]\n", width, height);
579  fprintf (fp, "{currentfile picstr readhexstring pop}\n");
580  fprintf (fp, "false %d\n", components);
581  fprintf (fp, "colorimage\n");
582 
583  curpix = (GLubyte*) pixels;
584  pos = 0;
585  for (i = width*height*components; i>0; i--) {
586    fprintf (fp, "%02hx ", *(curpix++));
587    if (++pos >= 32) {
588      fprintf (fp, "\n");
589      pos = 0;
590    }
591  }
592  if (pos)
593    fprintf (fp, "\n");
594
595  fprintf (fp, "grestore\n");
596  fprintf (fp, "showpage\n");
597  delete pixels;
598  fclose (fp);
599  return 0;
600}
601
602GLXContext G4OpenGLXViewer::create_GL_print_context(XVisualInfo*& pvi) {
603 
604  pvi = glXChooseVisual (dpy,
605                         XDefaultScreen (dpy),
606                         snglBuf_RGBA);
607
608  if (!pvi) {
609    pvi = glXChooseVisual (dpy,
610                           XDefaultScreen (dpy),
611                           dblBuf_RGBA);
612  }
613
614  return glXCreateContext (dpy,
615                           pvi,
616                           NULL,
617                           False);
618}
619
620#endif
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