1: /*
  2:    Defines the internal data structures for the X-windows
  3:    implementation of the graphics functionality in PETSc.
  4: */

  6: #if !defined(_XIMPL_H)
  7: #define _XIMPL_H
  8: #include <petsc/private/drawimpl.h>

 10: #include <X11/Xlib.h>
 11: #include <X11/Xutil.h>

 13: typedef unsigned long PetscDrawXiPixVal;

 15: typedef struct {
 16:   GC                set;
 17:   PetscDrawXiPixVal cur_pix;
 18: } PetscDrawXiGC;

 20: typedef struct {
 21:   Font              fnt;
 22:   int               font_w,font_h;
 23:   int               font_descent;
 24:   PetscDrawXiPixVal font_pix;
 25: } PetscDrawXiFont;

 27: typedef struct {
 28:   Display           *disp;            /* Display */
 29:   int               screen;           /* Screen of display */
 30:   Visual            *vis;             /* Graphics visual */
 31:   int               depth;            /* Depth of visual */
 32:   PetscDrawXiGC     gc;               /* Graphics context */
 33:   PetscDrawXiFont   *font;            /* Current font */
 34:   Window            win;              /* Window */
 35:   Drawable          drw;              /* Pixmap */
 36:   Colormap          cmap;             /* Colormap */
 37:   int               cmapsize;         /* Number of allocated colors */
 38:   PetscDrawXiPixVal foreground;       /* Foreground pixel */
 39:   PetscDrawXiPixVal background;       /* Background pixel */
 40:   PetscDrawXiPixVal cmapping[256];    /* Map color -> pixel value */
 41:   unsigned char     cpalette[256][3]; /* Map color -> RGB value*/
 42:   int               x,y,w,h;          /* Location and size window */
 43: } PetscDraw_X;

 45: #define PetscDrawXiDrawable(w) ((w)->drw ? (w)->drw : (w)->win)

 47: PETSC_STATIC_INLINE void PetscDrawXiSetPixVal(PetscDraw_X *W,PetscDrawXiPixVal pix)
 48: { if (W->gc.cur_pix != pix) { XSetForeground(W->disp,W->gc.set,pix); W->gc.cur_pix = pix; } }

 50: #if defined(PETSC_USE_DEBUG)
 51: #define PetscDrawXiValidColor(W,color) \
 52: do { if (PetscUnlikely((color)<0||(color)>=256)) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Color value %D out of range [0..255]",(PetscInt)(color)); } while (0)
 53: #else
 54: #define PetscDrawXiValidColor(W,color) do {} while (0)
 55: #endif

 57: #define PetscDrawXiSetColor(W,color) do { PetscDrawXiValidColor(W,color); PetscDrawXiSetPixVal(W,(W)->cmapping[(color)]); } while (0)

 59: PETSC_INTERN PetscErrorCode PetscDrawXiInit(PetscDraw_X*,const char[]);
 60: PETSC_INTERN PetscErrorCode PetscDrawXiClose(PetscDraw_X*);
 61: PETSC_INTERN PetscErrorCode PetscDrawXiFontFixed(PetscDraw_X*,int,int,PetscDrawXiFont**);
 62: PETSC_INTERN PetscErrorCode PetscDrawXiColormap(PetscDraw_X*);
 63: PETSC_INTERN PetscErrorCode PetscDrawXiQuickWindow(PetscDraw_X*,char*,int,int,int,int);
 64: PETSC_INTERN PetscErrorCode PetscDrawXiQuickWindowFromWindow(PetscDraw_X*,Window);
 65: PETSC_INTERN PetscErrorCode PetscDrawXiQuickPixmap(PetscDraw_X*);
 66: PETSC_INTERN PetscErrorCode PetscDrawXiResizeWindow(PetscDraw_X*,int,int);
 67: PETSC_INTERN PetscErrorCode PetscDrawXiGetGeometry(PetscDraw_X*,int*,int*,int*,int*);

 69: #endif