2: /*
  3:     Defines the operations for the X PetscDraw implementation.
  4: */

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

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

 11:    Collective on MPI_Comm

 13:    Input Parameters:
 14: +  comm - the communicator that will share X-window
 15: .  display - the X display on which to open,or null for the local machine
 16: .  title - the title to put in the title bar,or null for no title
 17: .  x,y - the screen coordinates of the upper left corner of window
 18:           may use PETSC_DECIDE for these two arguments, then PETSc places the
 19:           window
 20: -  w, h - the screen width and height in pixels,  or PETSC_DRAW_HALF_SIZE, PETSC_DRAW_FULL_SIZE,
 21:           or PETSC_DRAW_THIRD_SIZE or PETSC_DRAW_QUARTER_SIZE

 23:    Output Parameters:
 24: .  draw - the drawing context.

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

 45:    Level: beginner

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

 51:    Note for Fortran Programmers:
 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:    Concepts: X windows^drawing to

 59: .seealso: PetscDrawFlush(), PetscDrawDestroy(), PetscDrawCreate(), PetscDrawOpnOpenGL()
 60: @*/
 61: PetscErrorCode  PetscDrawOpenX(MPI_Comm comm,const char display[],const char title[],int x,int y,int w,int h,PetscDraw *draw)
 62: {

 66:   PetscDrawCreate(comm,display,title,x,y,w,h,draw);
 67:   PetscDrawSetType(*draw,PETSC_DRAW_X);
 68:   return(0);
 69: }