Date: 2026-03-01T05:25:09+00:00

Actual source code: drawreg.c

      1: /*
      2:        Provides the registration process for PETSc PetscDraw routines
      3: */
      4: #include <petsc/private/drawimpl.h>
      5: #include <petscviewer.h>
      6: #if defined(PETSC_HAVE_SAWS)
      7: #include <petscviewersaws.h>
      8: #endif

     10: /*
     11:    Contains the list of registered PetscDraw routines
     12: */
     13: PetscFunctionList PetscDrawList = NULL;

     15: /*@
     16:   PetscDrawView - Prints the `PetscDraw` data structure.

     18:   Collective

     20:   Input Parameters:
     21: + indraw - the `PetscDraw` context
     22: - viewer - visualization context

     24:    See PetscDrawSetFromOptions() for options database keys

     26:   Note:
     27:   The available visualization contexts include
     28: +     `PETSC_VIEWER_STDOUT_SELF` - standard output (default)
     29: -     `PETSC_VIEWER_STDOUT_WORLD` - synchronized standard
     30:   output where only the first processor opens
     31:   the file.  All other processors send their
     32:   data to the first processor to print.

     34:   The user can open an alternative visualization context with
     35:   `PetscViewerASCIIOpen()` - output to a specified file.

     37:   Level: beginner

     39: .seealso: `PetscDraw`, `PetscViewerASCIIOpen()`, `PetscViewer`
     40: @*/
     41: PetscErrorCode PetscDrawView(PetscDraw indraw, PetscViewer viewer)
     42: {
     43:   PetscBool isdraw;
     44: #if defined(PETSC_HAVE_SAWS)
     45:   PetscBool issaws;
     46: #endif

     48:   PetscFunctionBegin;
     50:   if (!viewer) PetscCall(PetscViewerASCIIGetStdout(PetscObjectComm((PetscObject)indraw), &viewer));
     52:   PetscCheckSameComm(indraw, 1, viewer, 2);

     54:   PetscCall(PetscObjectPrintClassNamePrefixType((PetscObject)indraw, viewer));
     55:   PetscCall(PetscObjectTypeCompare((PetscObject)viewer, PETSCVIEWERDRAW, &isdraw));
     56: #if defined(PETSC_HAVE_SAWS)
     57:   PetscCall(PetscObjectTypeCompare((PetscObject)viewer, PETSCVIEWERSAWS, &issaws));
     58: #endif
     59:   if (isdraw) {
     60:     PetscDraw draw;
     61:     char      str[36];
     62:     PetscReal x, y, bottom, h;

     64:     PetscCall(PetscViewerDrawGetDraw(viewer, 0, &draw));
     65:     PetscCall(PetscDrawGetCurrentPoint(draw, &x, &y));
     66:     PetscCall(PetscStrncpy(str, "PetscDraw: ", sizeof(str)));
     67:     PetscCall(PetscStrlcat(str, ((PetscObject)indraw)->type_name, sizeof(str)));
     68:     PetscCall(PetscDrawStringBoxed(draw, x, y, PETSC_DRAW_RED, PETSC_DRAW_BLACK, str, NULL, &h));
     69:     bottom = y - h;
     70:     PetscCall(PetscDrawPushCurrentPoint(draw, x, bottom));
     71: #if defined(PETSC_HAVE_SAWS)
     72:   } else if (issaws) {
     73:     PetscMPIInt rank;

     75:     PetscCall(PetscObjectName((PetscObject)indraw));
     76:     PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank));
     77:     if (!((PetscObject)indraw)->amsmem && rank == 0) PetscCall(PetscObjectViewSAWs((PetscObject)indraw, viewer));
     78: #endif
     79:   } else PetscTryTypeMethod(indraw, view, viewer);
     80:   PetscFunctionReturn(PETSC_SUCCESS);
     81: }

     83: /*@
     84:   PetscDrawViewFromOptions - View a `PetscDraw` from the option database

     86:   Collective

     88:   Input Parameters:
     89: + A    - the `PetscDraw` context
     90: . obj  - Optional object
     91: - name - command line option

     93:   Level: intermediate

     95: .seealso: `PetscDraw`, `PetscDrawView`, `PetscObjectViewFromOptions()`, `PetscDrawCreate()`
     96: @*/
     97: PetscErrorCode PetscDrawViewFromOptions(PetscDraw A, PetscObject obj, const char name[])
     98: {
     99:   PetscFunctionBegin;
    101:   PetscCall(PetscObjectViewFromOptions((PetscObject)A, obj, name));
    102:   PetscFunctionReturn(PETSC_SUCCESS);
    103: }

    105: /*@
    106:   PetscDrawCreate - Creates a graphics context.

    108:   Collective

    110:   Input Parameters:
    111: + comm    - MPI communicator
    112: . display - X display when using X Windows
    113: . title   - optional title added to top of window
    114: . x       - horizonatl coordinate of lower left corner of window or `PETSC_DECIDE`
    115: . y       - vertical coordinate of lower left corner of window or `PETSC_DECIDE`
    116: . w       - width of window, `PETSC_DECIDE`, `PETSC_DRAW_HALF_SIZE`, `PETSC_DRAW_FULL_SIZE`, `PETSC_DRAW_THIRD_SIZE` or `PETSC_DRAW_QUARTER_SIZE`
    117: - h       - height of window, `PETSC_DECIDE`, `PETSC_DRAW_HALF_SIZE`, `PETSC_DRAW_FULL_SIZE`, `PETSC_DRAW_THIRD_SIZE` or `PETSC_DRAW_QUARTER_SIZE`

    119:   Output Parameter:
    120: . indraw - location to put the `PetscDraw` context

    122:   Level: beginner

    124: .seealso: `PetscDrawSetType()`, `PetscDrawSetFromOptions()`, `PetscDrawDestroy()`, `PetscDrawLGCreate()`, `PetscDrawSPCreate()`,
    125:           `PetscDrawViewPortsCreate()`, `PetscDrawViewPortsSet()`, `PetscDrawAxisCreate()`, `PetscDrawHGCreate()`, `PetscDrawBarCreate()`,
    126:           `PetscViewerDrawGetDraw()`, `PetscDrawSetSave()`, `PetscDrawSetSaveMovie()`, `PetscDrawSetSaveFinalImage()`,
    127:           `PetscDrawOpenX()`, `PetscDrawOpenImage()`, `PetscDrawIsNull()`, `PetscDrawGetPopup()`, `PetscDrawCheckResizedWindow()`, `PetscDrawResizeWindow()`,
    128:           `PetscDrawGetWindowSize()`, `PetscDrawLine()`, `PetscDrawArrow()`, `PetscDrawLineSetWidth()`, `PetscDrawLineGetWidth()`, `PetscDrawMarker()`,
    129:           `PetscDrawPoint()`, `PetscDrawRectangle()`, `PetscDrawTriangle()`, `PetscDrawEllipse()`, `PetscDrawString()`, `PetscDrawStringCentered()`,
    130:           `PetscDrawStringBoxed()`, `PetscDrawStringVertical()`, `PetscDrawSetViewPort()`, `PetscDrawGetViewPort()`,
    131:           `PetscDrawSplitViewPort()`, `PetscDrawSetTitle()`, `PetscDrawAppendTitle()`, `PetscDrawGetTitle()`, `PetscDrawSetPause()`, `PetscDrawGetPause()`,
    132:           `PetscDrawPause()`, `PetscDrawSetDoubleBuffer()`, `PetscDrawClear()`, `PetscDrawFlush()`, `PetscDrawGetSingleton()`, `PetscDrawGetMouseButton()`,
    133:           `PetscDrawZoom()`, `PetscDrawGetBoundingBox()`
    134: @*/
    135: PetscErrorCode PetscDrawCreate(MPI_Comm comm, const char display[], const char title[], int x, int y, int w, int h, PetscDraw *indraw)
    136: {
    137:   PetscDraw draw;
    138:   PetscReal dpause = 0.0;
    139:   PetscBool flag;

    141:   PetscFunctionBegin;
    142:   PetscAssertPointer(indraw, 8);
    143:   PetscCall(PetscDrawInitializePackage());

    145:   PetscCall(PetscHeaderCreate(draw, PETSC_DRAW_CLASSID, "Draw", "Graphics", "Draw", comm, PetscDrawDestroy, PetscDrawView));
    146:   draw->data = NULL;
    147:   PetscCall(PetscStrallocpy(display, &draw->display));
    148:   PetscCall(PetscStrallocpy(title, &draw->title));
    149:   draw->x       = x;
    150:   draw->y       = y;
    151:   draw->w       = w;
    152:   draw->h       = h;
    153:   draw->pause   = 0.0;
    154:   draw->coor_xl = 0.0;
    155:   draw->coor_xr = 1.0;
    156:   draw->coor_yl = 0.0;
    157:   draw->coor_yr = 1.0;
    158:   draw->port_xl = 0.0;
    159:   draw->port_xr = 1.0;
    160:   draw->port_yl = 0.0;
    161:   draw->port_yr = 1.0;
    162:   draw->popup   = NULL;

    164:   PetscCall(PetscOptionsGetReal(NULL, NULL, "-draw_pause", &dpause, &flag));
    165:   if (flag) draw->pause = dpause;

    167:   draw->savefilename   = NULL;
    168:   draw->saveimageext   = NULL;
    169:   draw->savemovieext   = NULL;
    170:   draw->savefilecount  = 0;
    171:   draw->savesinglefile = PETSC_FALSE;
    172:   draw->savemoviefps   = PETSC_DECIDE;

    174:   PetscCall(PetscDrawSetCurrentPoint(draw, .5, .9));

    176:   draw->boundbox_xl = .5;
    177:   draw->boundbox_xr = .5;
    178:   draw->boundbox_yl = .9;
    179:   draw->boundbox_yr = .9;

    181:   *indraw = draw;
    182:   PetscFunctionReturn(PETSC_SUCCESS);
    183: }

    185: /*@
    186:   PetscDrawSetType - Builds graphics object for a particular implementation

    188:   Collective

    190:   Input Parameters:
    191: + draw - the graphics context
    192: - type - for example, `PETSC_DRAW_X`

    194:   Options Database Key:
    195: . -draw_type  <type> - Sets the type; use -help for a list of available methods (for instance, x)

    197:   Level: intermediate

    199:   Note:
    200:   See `PetscDrawSetFromOptions()` for additional options database keys

    202:   See "petsc/include/petscdraw.h" for available methods (for instance,
    203:   `PETSC_DRAW_X`, `PETSC_DRAW_TIKZ` or `PETSC_DRAW_IMAGE`)

    205: .seealso: `PetscDraw`, `PETSC_DRAW_X`, `PETSC_DRAW_TIKZ`, `PETSC_DRAW_IMAGE`, `PetscDrawSetFromOptions()`, `PetscDrawCreate()`, `PetscDrawDestroy()`, `PetscDrawType`
    206: @*/
    207: PetscErrorCode PetscDrawSetType(PetscDraw draw, PetscDrawType type)
    208: {
    209:   PetscBool match;
    210:   PetscBool flg = PETSC_FALSE;
    211:   PetscErrorCode (*r)(PetscDraw);

    213:   PetscFunctionBegin;
    215:   PetscAssertPointer(type, 2);

    217:   PetscCall(PetscObjectTypeCompare((PetscObject)draw, type, &match));
    218:   if (match) PetscFunctionReturn(PETSC_SUCCESS);

    220:   /*  User requests no graphics */
    221:   PetscCall(PetscOptionsHasName(((PetscObject)draw)->options, NULL, "-nox", &flg));

    223:   /*
    224:      This is not ideal, but it allows codes to continue to run if X graphics
    225:    was requested but is not installed on this machine. Mostly this is for
    226:    testing.
    227:    */
    228: #if !defined(PETSC_HAVE_X)
    229:   if (!flg) {
    230:     PetscCall(PetscStrcmp(type, PETSC_DRAW_X, &match));
    231:     if (match) {
    232:       PetscBool dontwarn = PETSC_TRUE;
    233:       flg                = PETSC_TRUE;
    234:       PetscCall(PetscOptionsHasName(NULL, NULL, "-nox_warning", &dontwarn));
    235:       if (!dontwarn) PetscCall((*PetscErrorPrintf)("PETSc installed without X Windows on this machine\nproceeding without graphics\n"));
    236:     }
    237:   }
    238: #endif
    239:   if (flg) {
    240:     PetscCall(PetscStrcmp(type, "tikz", &flg));
    241:     if (!flg) type = PETSC_DRAW_NULL;
    242:   }

    244:   PetscCall(PetscStrcmp(type, PETSC_DRAW_NULL, &match));
    245:   if (match) {
    246:     PetscCall(PetscOptionsHasName(NULL, NULL, "-draw_double_buffer", NULL));
    247:     PetscCall(PetscOptionsHasName(NULL, NULL, "-draw_virtual", NULL));
    248:     PetscCall(PetscOptionsHasName(NULL, NULL, "-draw_fast", NULL));
    249:     PetscCall(PetscOptionsHasName(NULL, NULL, "-draw_ports", NULL));
    250:     PetscCall(PetscOptionsHasName(NULL, NULL, "-draw_coordinates", NULL));
    251:   }

    253:   PetscCall(PetscFunctionListFind(PetscDrawList, type, &r));
    254:   PetscCheck(r, PetscObjectComm((PetscObject)draw), PETSC_ERR_ARG_UNKNOWN_TYPE, "Unknown PetscDraw type given: %s", type);
    255:   PetscTryTypeMethod(draw, destroy);
    256:   PetscCall(PetscMemzero(draw->ops, sizeof(struct _PetscDrawOps)));
    257:   PetscCall(PetscObjectChangeTypeName((PetscObject)draw, type));
    258:   PetscCall((*r)(draw));
    259:   PetscFunctionReturn(PETSC_SUCCESS);
    260: }

    262: /*@
    263:   PetscDrawGetType - Gets the `PetscDraw` type as a string from the `PetscDraw` object.

    265:   Not Collective

    267:   Input Parameter:
    268: . draw - Krylov context

    270:   Output Parameter:
    271: . type - name of PetscDraw method

    273:   Level: advanced

    275: .seealso: `PetscDraw`, `PetscDrawType`, `PetscDrawSetType()`, `PetscDrawCreate()`
    276: @*/
    277: PetscErrorCode PetscDrawGetType(PetscDraw draw, PetscDrawType *type)
    278: {
    279:   PetscFunctionBegin;
    281:   PetscAssertPointer(type, 2);
    282:   *type = ((PetscObject)draw)->type_name;
    283:   PetscFunctionReturn(PETSC_SUCCESS);
    284: }

    286: /*@C
    287:   PetscDrawRegister - Adds a method to the graphics package.

    289:   Not Collective, No Fortran Support

    291:   Input Parameters:
    292: + sname    - name of a new user-defined graphics class
    293: - function - routine to create method context

    295:   Level: developer

    297:   Note:
    298:   `PetscDrawRegister()` may be called multiple times to add several user-defined graphics classes

    300:   Example Usage:
    301: .vb
    302:    PetscDrawRegister("my_draw_type", MyDrawCreate);
    303: .ve

    305:   Then, your specific graphics package can be chosen with the procedural interface via
    306: .vb
    307:   PetscDrawSetType(ksp, "my_draw_type")
    308: .ve
    309:   or at runtime via the option
    310: .vb
    311:   -draw_type my_draw_type
    312: .ve

    314: .seealso: `PetscDraw`, `PetscDrawRegisterAll()`, `PetscDrawRegisterDestroy()`, `PetscDrawType`, `PetscDrawSetType()`
    315: @*/
    316: PetscErrorCode PetscDrawRegister(const char *sname, PetscErrorCode (*function)(PetscDraw))
    317: {
    318:   PetscFunctionBegin;
    319:   PetscCall(PetscDrawInitializePackage());
    320:   PetscCall(PetscFunctionListAdd(&PetscDrawList, sname, function));
    321:   PetscFunctionReturn(PETSC_SUCCESS);
    322: }

    324: /*@
    325:   PetscDrawSetOptionsPrefix - Sets the prefix used for searching for all
    326:   `PetscDraw` options in the database.

    328:   Logically Collective

    330:   Input Parameters:
    331: + draw   - the draw context
    332: - prefix - the prefix to prepend to all option names

    334:   Level: advanced

    336: .seealso: `PetscDraw`, `PetscDrawSetFromOptions()`, `PetscDrawCreate()`
    337: @*/
    338: PetscErrorCode PetscDrawSetOptionsPrefix(PetscDraw draw, const char prefix[])
    339: {
    340:   PetscFunctionBegin;
    342:   PetscCall(PetscObjectSetOptionsPrefix((PetscObject)draw, prefix));
    343:   PetscFunctionReturn(PETSC_SUCCESS);
    344: }

    346: /*@
    347:   PetscDrawSetFromOptions - Sets the graphics type from the options database.
    348:   Defaults to a PETSc X Windows graphics.

    350:   Collective

    352:   Input Parameter:
    353: . draw - the graphics context

    355:   Options Database Keys:
    356: + -nox                                       - do not use X graphics (ignore graphics calls, but run program correctly)
    357: . -nox_warning                               - when X Windows support is not installed this prevents the warning message from being printed
    358: . -draw_pause <pause amount>                 - - -1 indicates wait for mouse input, -2 indicates pause when window is to be destroyed
    359: . -draw_marker_type                          - <x,point>
    360: . -draw_save [optional filename]             - (X Windows only) saves each image before it is cleared to a file
    361: . -draw_save_final_image [optional filename] - (X Windows only) saves the final image displayed in a window
    362: . -draw_save_movie                           - converts image files to a movie  at the end of the run. See PetscDrawSetSave()
    363: . -draw_save_single_file                     - saves each new image in the same file, normally each new image is saved in a new file with 'filename/filename_%d.ext'
    364: . -draw_save_on_clear                        - saves an image on each clear, mainly for debugging
    365: - -draw_save_on_flush                        - saves an image on each flush, mainly for debugging

    367:   Level: intermediate

    369:   Note:
    370:   Must be called after `PetscDrawCreate()` before the `PetscDraw` is used.

    372: .seealso: `PetscDraw`, `PetscDrawCreate()`, `PetscDrawSetType()`, `PetscDrawSetSave()`, `PetscDrawSetSaveFinalImage()`, `PetscDrawPause()`, `PetscDrawSetPause()`
    373: @*/
    374: PetscErrorCode PetscDrawSetFromOptions(PetscDraw draw)
    375: {
    376:   PetscBool   flg, nox;
    377:   char        vtype[256];
    378:   const char *def;
    379: #if !defined(PETSC_USE_WINDOWS_GRAPHICS) && !defined(PETSC_HAVE_X)
    380:   PetscBool warn;
    381: #endif

    383:   PetscFunctionBegin;

    386:   PetscCall(PetscDrawRegisterAll());

    388:   if (((PetscObject)draw)->type_name) def = ((PetscObject)draw)->type_name;
    389:   else {
    390:     PetscCall(PetscOptionsHasName(((PetscObject)draw)->options, NULL, "-nox", &nox));
    391:     def = PETSC_DRAW_NULL;
    392: #if defined(PETSC_USE_WINDOWS_GRAPHICS)
    393:     if (!nox) def = PETSC_DRAW_WIN32;
    394: #elif defined(PETSC_HAVE_X)
    395:     if (!nox) def = PETSC_DRAW_X;
    396: #else
    397:     PetscCall(PetscOptionsHasName(NULL, NULL, "-nox_warning", &warn));
    398:     if (!nox && !warn) PetscCall((*PetscErrorPrintf)("PETSc installed without X Windows or Microsoft Graphics on this machine\nproceeding without graphics\n"));
    399: #endif
    400:   }
    401:   PetscObjectOptionsBegin((PetscObject)draw);
    402:   PetscCall(PetscOptionsFList("-draw_type", "Type of graphical output", "PetscDrawSetType", PetscDrawList, def, vtype, 256, &flg));
    403:   if (flg) {
    404:     PetscCall(PetscDrawSetType(draw, vtype));
    405:   } else if (!((PetscObject)draw)->type_name) {
    406:     PetscCall(PetscDrawSetType(draw, def));
    407:   }
    408:   PetscCall(PetscOptionsName("-nox", "Run without graphics", "None", &nox));
    409:   {
    410:     char      filename[PETSC_MAX_PATH_LEN];
    411:     char      movieext[32];
    412:     PetscBool image, movie;
    413:     PetscCall(PetscSNPrintf(filename, sizeof(filename), "%s%s", draw->savefilename ? draw->savefilename : "", draw->saveimageext ? draw->saveimageext : ""));
    414:     PetscCall(PetscSNPrintf(movieext, sizeof(movieext), "%s", draw->savemovieext ? draw->savemovieext : ""));
    415:     PetscCall(PetscOptionsString("-draw_save", "Save graphics to image file", "PetscDrawSetSave", filename, filename, sizeof(filename), &image));
    416:     PetscCall(PetscOptionsString("-draw_save_movie", "Make a movie from saved images", "PetscDrawSetSaveMovie", movieext, movieext, sizeof(movieext), &movie));
    417:     PetscCall(PetscOptionsInt("-draw_save_movie_fps", "Set frames per second in saved movie", PETSC_FUNCTION_NAME, draw->savemoviefps, &draw->savemoviefps, NULL));
    418:     PetscCall(PetscOptionsBool("-draw_save_single_file", "Each new image replaces previous image in file", PETSC_FUNCTION_NAME, draw->savesinglefile, &draw->savesinglefile, NULL));
    419:     if (image) PetscCall(PetscDrawSetSave(draw, filename));
    420:     if (movie) PetscCall(PetscDrawSetSaveMovie(draw, movieext));
    421:     PetscCall(PetscOptionsString("-draw_save_final_image", "Save final graphics to image file", "PetscDrawSetSaveFinalImage", filename, filename, sizeof(filename), &image));
    422:     if (image) PetscCall(PetscDrawSetSaveFinalImage(draw, filename));
    423:     PetscCall(PetscOptionsBool("-draw_save_on_clear", "Save graphics to file on each clear", PETSC_FUNCTION_NAME, draw->saveonclear, &draw->saveonclear, NULL));
    424:     PetscCall(PetscOptionsBool("-draw_save_on_flush", "Save graphics to file on each flush", PETSC_FUNCTION_NAME, draw->saveonflush, &draw->saveonflush, NULL));
    425:   }
    426:   PetscCall(PetscOptionsReal("-draw_pause", "Amount of time that program pauses after plots", "PetscDrawSetPause", draw->pause, &draw->pause, NULL));
    427:   PetscCall(PetscOptionsEnum("-draw_marker_type", "Type of marker to use on plots", "PetscDrawSetMarkerType", PetscDrawMarkerTypes, (PetscEnum)draw->markertype, (PetscEnum *)&draw->markertype, NULL));

    429:   /* process any options handlers added with PetscObjectAddOptionsHandler() */
    430:   PetscCall(PetscObjectProcessOptionsHandlers((PetscObject)draw, PetscOptionsObject));

    432:   PetscCall(PetscDrawViewFromOptions(draw, NULL, "-draw_view"));
    433:   PetscOptionsEnd();
    434:   PetscFunctionReturn(PETSC_SUCCESS);
    435: }