Actual source code: xinit.c
1: /*$Id: xinit.c,v 1.72 2001/03/23 23:20:15 balay Exp $*/
3: /*
4: This file contains routines to open an X window display and window
5: This consists of a number of routines that set the various
6: fields in the Window structure, which is passed to
7: all of these routines.
9: Note that if you use the default visual and colormap, then you
10: can use these routines with any X toolkit that will give you the
11: Window id of the window that it is managing. Use that instead of the
12: call to XiCreateWindow . Similarly for the Display.
13: */
15: #include src/sys/src/draw/impls/x/ximpl.h
17: EXTERN int XiUniformHues(PetscDraw_X *,int);
18: EXTERN int Xi_wait_map(PetscDraw_X*);
19: EXTERN int XiInitColors(PetscDraw_X*,Colormap);
20: EXTERN int XiFontFixed(PetscDraw_X*,int,int,XiFont**);
21: EXTERN int XiInitCmap(PetscDraw_X*);
22: EXTERN int PetscDrawSetColormap_X(PetscDraw_X*,char *,Colormap);
24: /*
25: XiOpenDisplay - Open a display
26: */
27: int XiOpenDisplay(PetscDraw_X* XiWin,char *display_name)
28: {
30: XiWin->disp = XOpenDisplay(display_name);
31: if (!XiWin->disp) {
32: SETERRQ1(1,"Unable to open display on %sn. Make sure your DISPLAY variablen
33: is set, or you use the -display name option and xhost + has beenn
34: run on your displaying machine.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: */
44: int XiSetGC(PetscDraw_X* XiWin,PixVal fg)
45: {
46: XGCValues gcvalues; /* window graphics context values */
49: /* Set the graphics contexts */
50: /* create a gc for the ROP_SET operation (writing the fg value to a pixel) */
51: /* (do this with function GXcopy; GXset will automatically write 1) */
52: gcvalues.function = GXcopy;
53: gcvalues.foreground = fg;
54: XiWin->gc.cur_pix = fg;
55: XiWin->gc.set = XCreateGC(XiWin->disp,RootWindow(XiWin->disp,XiWin->screen),
56: GCFunction | GCForeground,&gcvalues);
57: return(0);
58: }
60: /*
61: Actually display a window at [x,y] with sizes (w,h)
62: If w and/or h are 0, use the sizes in the fields of XiWin
63: (which may have been set by, for example, XiSetWindowSize)
64: */
65: int XiDisplayWindow(PetscDraw_X* XiWin,char *label,int x,int y,
66: int w,int h,PixVal backgnd_pixel)
67: {
68: unsigned int wavail,havail;
69: XSizeHints size_hints;
70: XWindowAttributes in_window_attributes;
71: XSetWindowAttributes window_attributes;
72: int depth,border_width;
73: unsigned long wmask;
76: /* get the available widths */
77: wavail = DisplayWidth(XiWin->disp,XiWin->screen);
78: havail = DisplayHeight(XiWin->disp,XiWin->screen);
79: if (w <= 0 || h <= 0) PetscFunctionReturn(2);
80: if ((unsigned int) w > wavail) w = wavail;
81: if ((unsigned int) h > havail) h = havail;
83: /* changed the next line from xtools version */
84: border_width = 0;
85: if (x < 0) x = 0;
86: if (y < 0) y = 0;
87: x = ((unsigned int) x + w > wavail) ? wavail - w : x;
88: y = ((unsigned int) y + h > havail) ? havail - h : y;
90: /* We need XCreateWindow since we may need an visual other than
91: the default one */
92: XGetWindowAttributes(XiWin->disp,RootWindow(XiWin->disp,XiWin->screen),&in_window_attributes);
93: window_attributes.background_pixmap = None;
94: window_attributes.background_pixel = backgnd_pixel;
95: /* No border for now */
96: window_attributes.border_pixmap = None;
97: /*
98: window_attributes.border_pixel = border_pixel;
99: */
100: window_attributes.bit_gravity = in_window_attributes.bit_gravity;
101: window_attributes.win_gravity = in_window_attributes.win_gravity;
102: /* Backing store is too slow in color systems */
103: window_attributes.backing_store = 0;
104: window_attributes.backing_pixel = backgnd_pixel;
105: window_attributes.save_under = 1;
106: window_attributes.event_mask = 0;
107: window_attributes.do_not_propagate_mask = 0;
108: window_attributes.override_redirect = 0;
109: window_attributes.colormap = XiWin->cmap;
110: /* None for cursor does NOT mean none, it means cursor of Parent */
111: window_attributes.cursor = None;
112: wmask = CWBackPixmap | CWBackPixel | CWBorderPixmap | CWBitGravity |
113: CWWinGravity | CWBackingStore |CWBackingPixel|CWOverrideRedirect |
114: CWSaveUnder | CWEventMask | CWDontPropagate |
115: CWCursor | CWColormap ;
116: depth = XiWin->depth;
117: /* DefaultDepth(XiWin->disp,XiWin->screen); */
118: XiWin->win = XCreateWindow(XiWin->disp,
119: RootWindow(XiWin->disp,XiWin->screen),
120: x,y,w,h,border_width,
121: depth,InputOutput,XiWin->vis,
122: wmask,&window_attributes);
124: if (!XiWin->win) PetscFunctionReturn(2);
126: /* set window manager hints */
127: {
128: XWMHints wm_hints;
129: XClassHint class_hints;
130: XTextProperty windowname,iconname;
131:
132: if (label) { XStringListToTextProperty(&label,1,&windowname);}
133: else { XStringListToTextProperty(&label,0,&windowname);}
134: if (label) { XStringListToTextProperty(&label,1,&iconname);}
135: else { XStringListToTextProperty(&label,0,&iconname);}
136:
137: wm_hints.initial_state = NormalState;
138: wm_hints.input = True;
139: wm_hints.flags = StateHint|InputHint;
140:
141: class_hints.res_name = 0;
142: class_hints.res_class = "BaseClass"; /* this is nonsense */
144: size_hints.x = x;
145: size_hints.y = y;
146: size_hints.min_width = 4*border_width;
147: size_hints.min_height = 4*border_width;
148: size_hints.width = w;
149: size_hints.height = h;
150: size_hints.flags = USPosition | USSize | PMinSize;
151:
152: XSetWMProperties(XiWin->disp,XiWin->win,&windowname,&iconname,0,0,&size_hints,&wm_hints,&class_hints);
153: }
154: /* make the window visible */
155: XSelectInput(XiWin->disp,XiWin->win,ExposureMask | StructureNotifyMask);
156: XMapWindow(XiWin->disp,XiWin->win);
158: /* some window systems are cruel and interfere with the placement of
159: windows. We wait here for the window to be created or to die */
160: if (Xi_wait_map(XiWin)){
161: XiWin->win = (Window)0;
162: PetscFunctionReturn(1);
163: }
164: /* Initial values for the upper left corner */
165: XiWin->x = 0;
166: XiWin->y = 0;
167: return(0);
168: }
170: int XiQuickWindow(PetscDraw_X* w,char* host,char* name,int x,int y,int nx,int ny)
171: {
172: int ierr;
175: XiOpenDisplay(w,host);
177: w->vis = DefaultVisual(w->disp,w->screen);
178: w->depth = DefaultDepth(w->disp,w->screen);
180: PetscDrawSetColormap_X(w,host,(Colormap)0);
182: XiDisplayWindow(w,name,x,y,nx,ny,(PixVal)0);
183: XiSetGC(w,w->cmapping[1]);
184: XiSetPixVal(w,w->background);
185: XSetWindowBackground(w->disp,w->win,w->cmapping[0]);
188: XiFontFixed(w,6,10,&w->font);
189: XFillRectangle(w->disp,w->win,w->gc.set,0,0,nx,ny);
190: return(0);
191: }
193: /*
194: A version from an already defined window
195: */
196: int XiQuickWindowFromWindow(PetscDraw_X* w,char *host,Window win)
197: {
198: Window root;
199: int d,ierr;
200: unsigned int ud;
201: XWindowAttributes attributes;
204: if (XiOpenDisplay(w,host)) {
205: SETERRQ(PETSC_ERR_LIB,"Could not open display: make sure your DISPLAY variablen
206: is set, or you use the [-display name] option and xhost + has beenn
207: run on your displaying machine.n");
208: }
210: w->win = win;
211: XGetWindowAttributes(w->disp,w->win,&attributes);
213: w->vis = DefaultVisual(w->disp,w->screen);
214: w->depth = DefaultDepth(w->disp,w->screen);
215: ierr = PetscDrawSetColormap_X(w,host,attributes.colormap);
217: XGetGeometry(w->disp,w->win,&root,&d,&d,
218: (unsigned int *)&w->w,(unsigned int *)&w->h,&ud,&ud);
219: w->x = w->y = 0;
221: XiSetGC(w,w->cmapping[1]);
222: XiSetPixVal(w,w->background);
223: XSetWindowBackground(w->disp,w->win,w->cmapping[0]);
224: XiFontFixed(w,6,10,&w->font);
225: return(0);
226: }
228: /*
229: XiSetWindowLabel - Sets new label in open window.
230: */
231: int XiSetWindowLabel(PetscDraw_X* Xiwin,char *label)
232: {
233: XTextProperty prop;
234: int len,ierr;
237: XGetWMName(Xiwin->disp,Xiwin->win,&prop);
238: prop.value = (unsigned char *)label;
239: ierr = PetscStrlen(label,&len);
240: prop.nitems = (long) len;
241: XSetWMName(Xiwin->disp,Xiwin->win,&prop);
242: return(0);
243: }
245: int XiSetToBackground(PetscDraw_X* XiWin)
246: {
248: if (XiWin->gc.cur_pix != XiWin->background) {
249: XSetForeground(XiWin->disp,XiWin->gc.set,XiWin->background);
250: XiWin->gc.cur_pix = XiWin->background;
251: }
252: return(0);
253: }