1 2 /* 3 Defines the internal data structures for the X-windows 4 implementation of the graphics functionality in PETSc. 5 */ 6 7 #include <petsc-private/drawimpl.h> 8 9 #if !defined(_XIMPL_H) 10 #define _XIMPL_H 11 12 #include <sys/types.h> 13 #include <X11/Xlib.h> 14 #include <X11/Xutil.h> 15 16 typedef unsigned long PetscDrawXiPixVal; 17 18 typedef struct { 19 GC set; 20 PetscDrawXiPixVal cur_pix; 21 } PetscDrawXiGC; 22 23 typedef struct { 24 Font fnt; 25 int font_w,font_h; 26 int font_descent; 27 PetscDrawXiPixVal font_pix; 28 } PetscDrawXiFont; 29 30 typedef struct { 31 Display *disp; 32 int screen; 33 Window win; 34 Visual *vis; /* Graphics visual */ 35 PetscDrawXiGC gc; 36 PetscDrawXiFont *font; 37 int depth; /* Depth of visual */ 38 int numcolors, /* Number of available colors */ 39 maxcolors; /* Current number in use */ 40 Colormap cmap; 41 PetscDrawXiPixVal foreground,background; 42 PetscDrawXiPixVal cmapping[256]; 43 int x,y,w,h; /* Size and location of window */ 44 Drawable drw; 45 } PetscDraw_X; 46 47 #define PetscDrawXiDrawable(w) ((w)->drw ? (w)->drw : (w)->win) 48 49 #define PetscDrawXiSetColor(Win,icolor)\ 50 {if (icolor >= 256 || icolor < 0) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Color value out of range");\ 51 if ((Win)->gc.cur_pix != (Win)->cmapping[icolor]) { \ 52 XSetForeground((Win)->disp,(Win)->gc.set,(Win)->cmapping[icolor]); \ 53 (Win)->gc.cur_pix = (Win)->cmapping[icolor];\ 54 }} 55 56 #define PetscDrawXiSetPixVal(Win,pix)\ 57 {if ((PetscDrawXiPixVal) (Win)->gc.cur_pix != pix) { \ 58 XSetForeground((Win)->disp,(Win)->gc.set,pix); \ 59 (Win)->gc.cur_pix = pix;\ 60 }} 61 62 #endif 63