Actual source code: xinit.c

  1: /* 
  2:    This file contains routines to open an X window display and window
  3:    This consists of a number of routines that set the various
  4:    fields in the Window structure, which is passed to 
  5:    all of these routines.

  7:    Note that if you use the default visual and colormap, then you
  8:    can use these routines with any X toolkit that will give you the
  9:    Window id of the window that it is managing.  Use that instead of the
 10:    call to XiCreateWindow .  Similarly for the Display.
 11: */

 13:  #include src/sys/src/draw/impls/x/ximpl.h

 15: EXTERN PetscErrorCode XiUniformHues(PetscDraw_X *,int);
 16: EXTERN PetscErrorCode Xi_wait_map(PetscDraw_X*);
 17: EXTERN PetscErrorCode XiInitColors(PetscDraw_X*,Colormap);
 18: EXTERN PetscErrorCode XiFontFixed(PetscDraw_X*,int,int,XiFont**);
 19: EXTERN PetscErrorCode XiInitCmap(PetscDraw_X*);
 20: EXTERN PetscErrorCode PetscDrawSetColormap_X(PetscDraw_X*,char *,Colormap);

 22: /*
 23:   XiOpenDisplay - Open a display
 24: */
 27: PetscErrorCode XiOpenDisplay(PetscDraw_X* XiWin,char *display_name)
 28: {
 30:   XiWin->disp = XOpenDisplay(display_name);
 31:   if (!XiWin->disp) {
 32:     SETERRQ1(PETSC_ERR_LIB,"Unable to open display on %s\n.  Make sure your COMPUTE NODES are authorized to connect \n\
 33:     to this X server and either your DISPLAY variable\n\
 34:     is set or you use the -display name option\n",display_name);
 35:   }
 36:   XiWin->screen = DefaultScreen(XiWin->disp);
 37:   return(0);
 38: }


 41: /* 
 42:    XiSetGC - set the GC structure in the base window
 43: */
 46: PetscErrorCode XiSetGC(PetscDraw_X* XiWin,PixVal fg)
 47: {
 48:   XGCValues       gcvalues;       /* window graphics context values */

 51:   /* Set the graphics contexts */
 52:   /* create a gc for the ROP_SET operation (writing the fg value to a pixel) */
 53:   /* (do this with function GXcopy; GXset will automatically write 1) */
 54:   gcvalues.function   = GXcopy;
 55:   gcvalues.foreground = fg;
 56:   XiWin->gc.cur_pix   = fg;
 57:   XiWin->gc.set = XCreateGC(XiWin->disp,RootWindow(XiWin->disp,XiWin->screen),
 58:                               GCFunction | GCForeground,&gcvalues);
 59:   return(0);
 60: }

 62: /*
 63:     Actually display a window at [x,y] with sizes (w,h)
 64:     If w and/or h are 0, use the sizes in the fields of XiWin
 65:     (which may have been set by, for example, XiSetWindowSize)
 66: */
 69: PetscErrorCode XiDisplayWindow(PetscDraw_X* XiWin,char *label,int x,int y,int w,int h,PixVal backgnd_pixel)
 70: {
 71:   unsigned int            wavail,havail;
 72:   XSizeHints              size_hints;
 73:   XWindowAttributes       in_window_attributes;
 74:   XSetWindowAttributes    window_attributes;
 75:   int                     depth,border_width;
 76:   unsigned long           wmask;

 79:   /* get the available widths */
 80:   wavail              = DisplayWidth(XiWin->disp,XiWin->screen);
 81:   havail              = DisplayHeight(XiWin->disp,XiWin->screen);
 82:   if (w <= 0 || h <= 0) PetscFunctionReturn(2);
 83:   if ((unsigned int) w > wavail) w = wavail;
 84:   if ((unsigned int) h > havail) h = havail;

 86:   /* changed the next line from xtools version */
 87:   border_width   = 0;
 88:   if (x < 0) x   = 0;
 89:   if (y < 0) y   = 0;
 90:   x   = ((unsigned int) x + w > wavail) ? wavail - w : x;
 91:   y   = ((unsigned int) y + h > havail) ? havail - h : y;

 93:   /* We need XCreateWindow since we may need an visual other than
 94:    the default one */
 95:   XGetWindowAttributes(XiWin->disp,RootWindow(XiWin->disp,XiWin->screen),&in_window_attributes);
 96:   window_attributes.background_pixmap = None;
 97:   window_attributes.background_pixel  = backgnd_pixel;
 98:   /* No border for now */
 99:   window_attributes.border_pixmap     = None;
100:   /* 
101:   window_attributes.border_pixel      = border_pixel; 
102:   */
103:   window_attributes.bit_gravity       = in_window_attributes.bit_gravity;
104:   window_attributes.win_gravity       = in_window_attributes.win_gravity;
105:         /* Backing store is too slow in color systems */
106:   window_attributes.backing_store     = 0;
107:   window_attributes.backing_pixel     = backgnd_pixel;
108:   window_attributes.save_under        = 1;
109:   window_attributes.event_mask        = 0;
110:   window_attributes.do_not_propagate_mask = 0;
111:   window_attributes.override_redirect = 0;
112:   window_attributes.colormap          = XiWin->cmap;
113:   /* None for cursor does NOT mean none, it means cursor of Parent */
114:   window_attributes.cursor            = None;
115:   wmask   = CWBackPixmap | CWBackPixel | CWBorderPixmap | CWBitGravity |
116:             CWWinGravity | CWBackingStore |CWBackingPixel|CWOverrideRedirect |
117:             CWSaveUnder  | CWEventMask    | CWDontPropagate |
118:             CWCursor     | CWColormap ;
119:   depth       = XiWin->depth;
120:   /* DefaultDepth(XiWin->disp,XiWin->screen); */
121:   XiWin->win  = XCreateWindow(XiWin->disp,
122:                              RootWindow(XiWin->disp,XiWin->screen),
123:                              x,y,w,h,border_width,
124:                              depth,InputOutput,XiWin->vis,
125:                              wmask,&window_attributes);

127:   if (!XiWin->win)  PetscFunctionReturn(2);

129:   /* set window manager hints */
130:   {
131:     XWMHints      wm_hints;
132:     XClassHint    class_hints;
133:     XTextProperty windowname,iconname;
134: 
135:     if (label) { XStringListToTextProperty(&label,1,&windowname);}
136:     else       { XStringListToTextProperty(&label,0,&windowname);}
137:     if (label) { XStringListToTextProperty(&label,1,&iconname);}
138:     else       { XStringListToTextProperty(&label,0,&iconname);}
139: 
140:     wm_hints.initial_state  = NormalState;
141:     wm_hints.input          = True;
142:     wm_hints.flags          = StateHint|InputHint;
143: 
144:     class_hints.res_name    = 0;
145:     class_hints.res_class   = (char*)"BaseClass"; /* this is nonsense */

147:     size_hints.x            = x;
148:     size_hints.y            = y;
149:     size_hints.min_width    = 4*border_width;
150:     size_hints.min_height   = 4*border_width;
151:     size_hints.width        = w;
152:     size_hints.height       = h;
153:     size_hints.flags        = USPosition | USSize | PMinSize;
154: 
155:     XSetWMProperties(XiWin->disp,XiWin->win,&windowname,&iconname,0,0,&size_hints,&wm_hints,&class_hints);
156:   }
157:   /* make the window visible */
158:   XSelectInput(XiWin->disp,XiWin->win,ExposureMask | StructureNotifyMask);
159:   XMapWindow(XiWin->disp,XiWin->win);

161:   /* some window systems are cruel and interfere with the placement of
162:      windows.  We wait here for the window to be created or to die */
163:   if (Xi_wait_map(XiWin)){
164:     XiWin->win    = (Window)0;
165:     PetscFunctionReturn(1);
166:   }
167:   /* Initial values for the upper left corner */
168:   XiWin->x = 0;
169:   XiWin->y = 0;
170:   return(0);
171: }

175: PetscErrorCode XiQuickWindow(PetscDraw_X* w,char* host,char* name,int x,int y,int nx,int ny)
176: {

180:   XiOpenDisplay(w,host);

182:   w->vis    = DefaultVisual(w->disp,w->screen);
183:   w->depth  = DefaultDepth(w->disp,w->screen);

185:   PetscDrawSetColormap_X(w,host,(Colormap)0);

187:   XiDisplayWindow(w,name,x,y,nx,ny,(PixVal)0);
188:   XiSetGC(w,w->cmapping[1]);
189:   XiSetPixVal(w,w->background);
190:   XSetWindowBackground(w->disp,w->win,w->cmapping[0]);


193:   XiFontFixed(w,6,10,&w->font);
194:   XFillRectangle(w->disp,w->win,w->gc.set,0,0,nx,ny);
195:   return(0);
196: }

198: /* 
199:    A version from an already defined window 
200: */
203: PetscErrorCode XiQuickWindowFromWindow(PetscDraw_X* w,char *host,Window win)
204: {
205:   Window            root;
207:   int               d;
208:   unsigned int      ud;
209:   XWindowAttributes attributes;

212:   XiOpenDisplay(w,host);
213:   w->win = win;
214:   XGetWindowAttributes(w->disp,w->win,&attributes);

216:   w->vis    = DefaultVisual(w->disp,w->screen);
217:   w->depth  = DefaultDepth(w->disp,w->screen);
218:   PetscDrawSetColormap_X(w,host,attributes.colormap);

220:   XGetGeometry(w->disp,w->win,&root,&d,&d,
221:               (unsigned int *)&w->w,(unsigned int *)&w->h,&ud,&ud);
222:   w->x = w->y = 0;

224:   XiSetGC(w,w->cmapping[1]);
225:   XiSetPixVal(w,w->background);
226:   XSetWindowBackground(w->disp,w->win,w->cmapping[0]);
227:   XiFontFixed(w,6,10,&w->font);
228:   return(0);
229: }

231: /*
232:       XiSetWindowLabel - Sets new label in open window.
233: */
236: PetscErrorCode XiSetWindowLabel(PetscDraw_X* Xiwin,char *label)
237: {
238:   XTextProperty prop;
239:   size_t        len;

243:   XGetWMName(Xiwin->disp,Xiwin->win,&prop);
244:   prop.value  = (unsigned char *)label;
245:   PetscStrlen(label,&len);
246:   prop.nitems = (long) len;
247:   XSetWMName(Xiwin->disp,Xiwin->win,&prop);
248:   return(0);
249: }

253: PetscErrorCode XiSetToBackground(PetscDraw_X* XiWin)
254: {
256:   if (XiWin->gc.cur_pix != XiWin->background) {
257:     XSetForeground(XiWin->disp,XiWin->gc.set,XiWin->background);
258:     XiWin->gc.cur_pix   = XiWin->background;
259:   }
260:   return(0);
261: }