1: /*
  2:     Defines the operations for the X PetscDraw implementation.
  3: */

  5: #include <../src/sys/classes/draw/impls/x/ximpl.h>

  7: /*@C
  8:   PetscDrawOpenX - Opens an X-window for use with the `PetscDraw` routines.

 10:   Collective

 12:   Input Parameters:
 13: + comm    - the communicator that will share X-window
 14: . display - the X display on which to open, or `NULL` for the local machine
 15: . title   - the title to put in the title bar, or `NULL` for no title
 16: . x       - the x screen coordinates of the upper left corner of window (or `PETSC_DECIDE`)
 17: . y       - the y screen coordinates of the upper left corner of window (or `PETSC_DECIDE`)
 18: . w       - the screen width in pixels of (or `PETSC_DRAW_HALF_SIZE`, `PETSC_DRAW_FULL_SIZE`, or `PETSC_DRAW_THIRD_SIZE` or `PETSC_DRAW_QUARTER_SIZE`)
 19: - h       - the screen height in pixels of (or `PETSC_DRAW_HALF_SIZE`, `PETSC_DRAW_FULL_SIZE`, or `PETSC_DRAW_THIRD_SIZE` or `PETSC_DRAW_QUARTER_SIZE`)

 21:   Output Parameter:
 22: . draw - the drawing context.

 24:   Options Database Keys:
 25: + -nox                    - Disables all x-windows output
 26: . -display <name>         - Sets name of machine for the X display
 27: . -draw_pause <pause>     - Sets time (in seconds) that the
 28:        program pauses after PetscDrawPause() has been called
 29:        (0 is default, -1 implies until user input).
 30: . -draw_cmap <name>       - Sets the colormap to use.
 31: . -draw_cmap_reverse      - Reverses the colormap.
 32: . -draw_cmap_brighten     - Brighten (0 < beta < 1) or darken (-1 < beta < 0) the colormap.
 33: . -draw_x_shared_colormap - Causes PETSc to use a shared
 34:        colormap. By default PETSc creates a separate color
 35:        for its windows, you must put the mouse into the graphics
 36:        window to see  the correct colors. This options forces
 37:        PETSc to use the default colormap which will usually result
 38:        in bad contour plots.
 39: . -draw_fast              - Does not create colormap for contour plots.
 40: . -draw_double_buffer     - Uses double buffering for smooth animation.
 41: - -geometry               - Indicates location and size of window.

 43:   Level: beginner

 45:   Notes:
 46:   If `x` and `y` are both `PETSC_DECIDE` then PETSc places the window automatically.

 48:   When finished with the drawing context, it should be destroyed
 49:   with `PetscDrawDestroy()`.

 51:   Fortran Notes:
 52:   Whenever indicating null character data in a Fortran code,
 53:   `PETSC_NULL_CHARACTER` must be employed; using NULL is not
 54:   correct for character data!  Thus, `PETSC_NULL_CHARACTER` can be
 55:   used for the display and title input parameters.

 57: .seealso: `PetscDrawFlush()`, `PetscDrawDestroy()`, `PetscDrawCreate()`, `PetscDrawOpnOpenGL()`
 58: @*/
 59: PetscErrorCode PetscDrawOpenX(MPI_Comm comm, const char display[], const char title[], int x, int y, int w, int h, PetscDraw *draw)
 60: {
 61:   PetscFunctionBegin;
 62:   PetscCall(PetscDrawCreate(comm, display, title, x, y, w, h, draw));
 63:   PetscCall(PetscDrawSetType(*draw, PETSC_DRAW_X));
 64:   PetscFunctionReturn(PETSC_SUCCESS);
 65: }