Actual source code: xops.c
petsc-3.13.6 2020-09-29
1: /*
2: Defines the operations for the X PetscDraw implementation.
3: */
5: #include <../src/sys/classes/draw/impls/x/ximpl.h>
7: /*
8: These macros transform from the users coordinates to the X-window pixel coordinates.
9: */
10: #define XTRANS(draw,xwin,x) ((int)(((xwin)->w-1)*((draw)->port_xl + (((x - (draw)->coor_xl)*((draw)->port_xr - (draw)->port_xl))/((draw)->coor_xr - (draw)->coor_xl)))))
11: #define YTRANS(draw,xwin,y) (((xwin)->h-1) - (int)(((xwin)->h-1)*((draw)->port_yl + (((y - (draw)->coor_yl)*((draw)->port_yr - (draw)->port_yl))/((draw)->coor_yr - (draw)->coor_yl)))))
13: #define ITRANS(draw,xwin,i) ((draw)->coor_xl + (((PetscReal)(i))*((draw)->coor_xr - (draw)->coor_xl)/((xwin)->w-1) - (draw)->port_xl)/((draw)->port_xr - (draw)->port_xl))
14: #define JTRANS(draw,xwin,j) ((draw)->coor_yl + (((PetscReal)(j))/((xwin)->h-1) + (draw)->port_yl - 1)*((draw)->coor_yr - (draw)->coor_yl)/((draw)->port_yl - (draw)->port_yr))
17: static PetscErrorCode PetscDrawSetViewport_X(PetscDraw draw,PetscReal xl,PetscReal yl,PetscReal xr,PetscReal yr)
18: {
19: PetscDraw_X *XiWin = (PetscDraw_X*)draw->data;
20: int xa,ya,xb,yb,xmax = XiWin->w-1,ymax = XiWin->h-1;
21: XRectangle box;
25: xa = (int)(xl*xmax); ya = ymax - (int)(yr*ymax);
26: xb = (int)(xr*xmax); yb = ymax - (int)(yl*ymax);
27: PetscDrawCollectiveBegin(draw);
28: box.x = (short)xa; box.width = (unsigned short)(xb + 1 - xa);
29: box.y = (short)ya; box.height = (unsigned short)(yb + 1 - ya);
30: XSetClipRectangles(XiWin->disp,XiWin->gc.set,0,0,&box,1,Unsorted);
31: PetscDrawCollectiveEnd(draw);
32: return(0);
33: }
35: static PetscErrorCode PetscDrawCoordinateToPixel_X(PetscDraw draw,PetscReal x,PetscReal y,int *i,int *j)
36: {
37: PetscDraw_X *XiWin = (PetscDraw_X*)draw->data;
40: *i = XTRANS(draw,XiWin,x);
41: *j = YTRANS(draw,XiWin,y);
42: return(0);
43: }
45: static PetscErrorCode PetscDrawPixelToCoordinate_X(PetscDraw draw,int i,int j,PetscReal *x,PetscReal *y)
46: {
47: PetscDraw_X *XiWin = (PetscDraw_X*)draw->data;
50: *x = ITRANS(draw,XiWin,i);
51: *y = JTRANS(draw,XiWin,j);
52: return(0);
53: }
55: static PetscErrorCode PetscDrawPoint_X(PetscDraw draw,PetscReal x,PetscReal y,int c)
56: {
57: PetscDraw_X *XiWin = (PetscDraw_X*)draw->data;
58: int xx,yy,i,j;
61: xx = XTRANS(draw,XiWin,x);
62: yy = YTRANS(draw,XiWin,y);
63: PetscDrawXiSetColor(XiWin,c);
64: for (i=-1; i<2; i++) {
65: for (j=-1; j<2; j++) {
66: XDrawPoint(XiWin->disp,PetscDrawXiDrawable(XiWin),XiWin->gc.set,xx+i,yy+j);
67: }
68: }
69: return(0);
70: }
72: static PetscErrorCode PetscDrawPointPixel_X(PetscDraw draw,int x,int y,int c)
73: {
74: PetscDraw_X *XiWin = (PetscDraw_X*)draw->data;
77: PetscDrawXiSetColor(XiWin,c);
78: XDrawPoint(XiWin->disp,PetscDrawXiDrawable(XiWin),XiWin->gc.set,x,y);
79: return(0);
80: }
82: static PetscErrorCode PetscDrawLine_X(PetscDraw draw,PetscReal xl,PetscReal yl,PetscReal xr,PetscReal yr,int cl)
83: {
84: PetscDraw_X *XiWin = (PetscDraw_X*)draw->data;
85: int x_1,y_1,x_2,y_2;
88: PetscDrawXiSetColor(XiWin,cl);
89: x_1 = XTRANS(draw,XiWin,xl); x_2 = XTRANS(draw,XiWin,xr);
90: y_1 = YTRANS(draw,XiWin,yl); y_2 = YTRANS(draw,XiWin,yr);
91: XDrawLine(XiWin->disp,PetscDrawXiDrawable(XiWin),XiWin->gc.set,x_1,y_1,x_2,y_2);
92: return(0);
93: }
95: static PetscErrorCode PetscDrawArrow_X(PetscDraw draw,PetscReal xl,PetscReal yl,PetscReal xr,PetscReal yr,int cl)
96: {
97: PetscDraw_X *XiWin = (PetscDraw_X*)draw->data;
98: int x_1,y_1,x_2,y_2;
101: PetscDrawXiSetColor(XiWin,cl);
102: x_1 = XTRANS(draw,XiWin,xl); x_2 = XTRANS(draw,XiWin,xr);
103: y_1 = YTRANS(draw,XiWin,yl); y_2 = YTRANS(draw,XiWin,yr);
104: XDrawLine(XiWin->disp,PetscDrawXiDrawable(XiWin),XiWin->gc.set,x_1,y_1,x_2,y_2);
105: if (x_1 == x_2 && y_1 == y_2) return(0);
106: if (x_1 == x_2 && PetscAbs(y_1 - y_2) > 7) {
107: if (y_2 > y_1) {
108: XDrawLine(XiWin->disp,PetscDrawXiDrawable(XiWin),XiWin->gc.set,x_2,y_2,x_2-3,y_2-3);
109: XDrawLine(XiWin->disp,PetscDrawXiDrawable(XiWin),XiWin->gc.set,x_2,y_2,x_2+3,y_2-3);
110: } else {
111: XDrawLine(XiWin->disp,PetscDrawXiDrawable(XiWin),XiWin->gc.set,x_2,y_2,x_2-3,y_2+3);
112: XDrawLine(XiWin->disp,PetscDrawXiDrawable(XiWin),XiWin->gc.set,x_2,y_2,x_2+3,y_2+3);
113: }
114: }
115: if (y_1 == y_2 && PetscAbs(x_1 - x_2) > 7) {
116: if (x_2 > x_1) {
117: XDrawLine(XiWin->disp,PetscDrawXiDrawable(XiWin),XiWin->gc.set,x_2-3,y_2-3,x_2,y_2);
118: XDrawLine(XiWin->disp,PetscDrawXiDrawable(XiWin),XiWin->gc.set,x_2-3,y_2+3,x_2,y_2);
119: } else {
120: XDrawLine(XiWin->disp,PetscDrawXiDrawable(XiWin),XiWin->gc.set,x_2,y_2,x_2+3,y_2-3);
121: XDrawLine(XiWin->disp,PetscDrawXiDrawable(XiWin),XiWin->gc.set,x_2,y_2,x_2+3,y_2+3);
122: }
123: }
124: return(0);
125: }
127: static PetscErrorCode PetscDrawRectangle_X(PetscDraw draw,PetscReal xl,PetscReal yl,PetscReal xr,PetscReal yr,int c1,int c2,int c3,int c4)
128: {
129: PetscDraw_X *XiWin = (PetscDraw_X*)draw->data;
130: int x,y,w,h,c = (c1 + c2 + c3 + c4)/4;
133: PetscDrawXiSetColor(XiWin,c);
134: x = XTRANS(draw,XiWin,xl); w = XTRANS(draw,XiWin,xr) + 1 - x; if (w <= 0) w = 1;
135: y = YTRANS(draw,XiWin,yr); h = YTRANS(draw,XiWin,yl) + 1 - y; if (h <= 0) h = 1;
136: XFillRectangle(XiWin->disp,PetscDrawXiDrawable(XiWin),XiWin->gc.set,x,y,w,h);
137: return(0);
138: }
140: static PetscErrorCode PetscDrawEllipse_X(PetscDraw draw,PetscReal x,PetscReal y,PetscReal a,PetscReal b,int c)
141: {
142: PetscDraw_X *XiWin = (PetscDraw_X*)draw->data;
143: int xA,yA,w,h;
146: PetscDrawXiSetColor(XiWin, c);
147: xA = XTRANS(draw,XiWin, x - a/2); w = XTRANS(draw,XiWin, x + a/2) + 1 - xA; w = PetscAbs(w);
148: yA = YTRANS(draw,XiWin, y + b/2); h = YTRANS(draw,XiWin, y - b/2) + 1 - yA; h = PetscAbs(h);
149: XFillArc(XiWin->disp,PetscDrawXiDrawable(XiWin),XiWin->gc.set,xA,yA,w,h,0,360*64);
150: return(0);
151: }
153: PETSC_INTERN PetscErrorCode PetscDrawInterpolatedTriangle_X(PetscDraw_X*,int,int,int,int,int,int,int,int,int);
155: static PetscErrorCode PetscDrawTriangle_X(PetscDraw draw,PetscReal X1,PetscReal Y_1,PetscReal X2,PetscReal Y2,PetscReal X3,PetscReal Y3,int c1,int c2,int c3)
156: {
157: PetscDraw_X *XiWin = (PetscDraw_X*)draw->data;
161: if (c1 == c2 && c2 == c3) {
162: XPoint pt[3];
163: PetscDrawXiSetColor(XiWin,c1);
164: pt[0].x = XTRANS(draw,XiWin,X1);
165: pt[0].y = YTRANS(draw,XiWin,Y_1);
166: pt[1].x = XTRANS(draw,XiWin,X2);
167: pt[1].y = YTRANS(draw,XiWin,Y2);
168: pt[2].x = XTRANS(draw,XiWin,X3);
169: pt[2].y = YTRANS(draw,XiWin,Y3);
170: XFillPolygon(XiWin->disp,PetscDrawXiDrawable(XiWin),XiWin->gc.set,pt,3,Convex,CoordModeOrigin);
171: } else {
172: int x1,y_1,x2,y2,x3,y3;
173: x1 = XTRANS(draw,XiWin,X1);
174: y_1 = YTRANS(draw,XiWin,Y_1);
175: x2 = XTRANS(draw,XiWin,X2);
176: y2 = YTRANS(draw,XiWin,Y2);
177: x3 = XTRANS(draw,XiWin,X3);
178: y3 = YTRANS(draw,XiWin,Y3);
179: PetscDrawInterpolatedTriangle_X(XiWin,x1,y_1,c1,x2,y2,c2,x3,y3,c3);
180: }
181: return(0);
182: }
184: static PetscErrorCode PetscDrawStringSetSize_X(PetscDraw draw,PetscReal x,PetscReal y)
185: {
186: PetscDraw_X *XiWin = (PetscDraw_X*)draw->data;
187: int w,h;
191: w = (int)((XiWin->w)*x*(draw->port_xr - draw->port_xl)/(draw->coor_xr - draw->coor_xl));
192: h = (int)((XiWin->h)*y*(draw->port_yr - draw->port_yl)/(draw->coor_yr - draw->coor_yl));
193: PetscFree(XiWin->font);
194: PetscDrawXiFontFixed(XiWin,w,h,&XiWin->font);
195: return(0);
196: }
198: static PetscErrorCode PetscDrawStringGetSize_X(PetscDraw draw,PetscReal *x,PetscReal *y)
199: {
200: PetscDraw_X *XiWin = (PetscDraw_X*)draw->data;
201: PetscReal w,h;
204: w = XiWin->font->font_w; h = XiWin->font->font_h;
205: if (x) *x = w*(draw->coor_xr - draw->coor_xl)/((XiWin->w)*(draw->port_xr - draw->port_xl));
206: if (y) *y = h*(draw->coor_yr - draw->coor_yl)/((XiWin->h)*(draw->port_yr - draw->port_yl));
207: return(0);
208: }
210: static PetscErrorCode PetscDrawString_X(PetscDraw draw,PetscReal x,PetscReal y,int c,const char chrs[])
211: {
212: PetscDraw_X *XiWin = (PetscDraw_X*)draw->data;
213: int xx,yy,descent = XiWin->font->font_descent;
214: size_t len;
215: char *substr;
216: PetscToken token;
220: xx = XTRANS(draw,XiWin,x);
221: yy = YTRANS(draw,XiWin,y);
222: PetscDrawXiSetColor(XiWin,c);
224: PetscTokenCreate(chrs,'\n',&token);
225: PetscTokenFind(token,&substr);
226: while (substr) {
227: PetscStrlen(substr,&len);
228: XDrawString(XiWin->disp,PetscDrawXiDrawable(XiWin),XiWin->gc.set,xx,yy-descent,substr,len);
229: yy += XiWin->font->font_h;
230: PetscTokenFind(token,&substr);
231: }
232: PetscTokenDestroy(&token);
233: return(0);
234: }
236: static PetscErrorCode PetscDrawStringVertical_X(PetscDraw draw,PetscReal x,PetscReal y,int c,const char text[])
237: {
238: PetscDraw_X *XiWin = (PetscDraw_X*)draw->data;
239: int xx,yy,offset = XiWin->font->font_h - XiWin->font->font_descent;
240: char chr[2] = {0, 0};
243: xx = XTRANS(draw,XiWin,x);
244: yy = YTRANS(draw,XiWin,y);
245: PetscDrawXiSetColor(XiWin,c);
246: while ((chr[0] = *text++)) {
247: XDrawString(XiWin->disp,PetscDrawXiDrawable(XiWin),XiWin->gc.set,xx,yy+offset,chr,1);
248: yy += XiWin->font->font_h;
249: }
250: return(0);
251: }
253: static PetscErrorCode PetscDrawFlush_X(PetscDraw draw)
254: {
255: PetscDraw_X *XiWin = (PetscDraw_X*)draw->data;
256: PetscMPIInt rank;
260: /* make sure the X server processed requests from all processes */
261: PetscDrawCollectiveBegin(draw);
262: XSync(XiWin->disp,False);
263: PetscDrawCollectiveEnd(draw);
264: MPI_Barrier(PetscObjectComm((PetscObject)draw));
266: /* transfer pixmap contents to window (only the first process does this) */
267: if (XiWin->drw && XiWin->win) {
268: MPI_Comm_rank(PetscObjectComm((PetscObject)draw),&rank);
269: PetscDrawCollectiveBegin(draw);
270: if (!rank) XCopyArea(XiWin->disp,XiWin->drw,XiWin->win,XiWin->gc.set,0,0,XiWin->w,XiWin->h,0,0);
271: if (!rank) XSync(XiWin->disp,False);
272: PetscDrawCollectiveEnd(draw);
273: MPI_Barrier(PetscObjectComm((PetscObject)draw));
274: }
275: return(0);
276: }
278: static PetscErrorCode PetscDrawClear_X(PetscDraw draw)
279: {
280: PetscDraw_X *XiWin = (PetscDraw_X*)draw->data;
281: int xmax = XiWin->w-1, ymax = XiWin->h-1;
282: PetscReal xl = draw->port_xl, yl = draw->port_yl;
283: PetscReal xr = draw->port_xr, yr = draw->port_yr;
284: PetscMPIInt rank;
288: /* make sure the X server processed requests from all processes */
289: PetscDrawCollectiveBegin(draw);
290: XSync(XiWin->disp,False);
291: PetscDrawCollectiveEnd(draw);
292: MPI_Barrier(PetscObjectComm((PetscObject)draw));
294: /* only the first process handles the clearing business */
295: PetscDrawCollectiveBegin(draw);
296: MPI_Comm_rank(PetscObjectComm((PetscObject)draw),&rank);
297: if (!rank) {
298: int xa = (int)(xl*xmax), ya = ymax - (int)(yr*ymax);
299: int xb = (int)(xr*xmax), yb = ymax - (int)(yl*ymax);
300: unsigned int w = (unsigned int)(xb + 1 - xa);
301: unsigned int h = (unsigned int)(yb + 1 - ya);
302: PetscDrawXiSetPixVal(XiWin,XiWin->background);
303: XFillRectangle(XiWin->disp,PetscDrawXiDrawable(XiWin),XiWin->gc.set,xa,ya,w,h);
304: XSync(XiWin->disp,False);
305: }
306: PetscDrawCollectiveEnd(draw);
307: MPI_Barrier(PetscObjectComm((PetscObject)draw));
308: return(0);
309: }
311: static PetscErrorCode PetscDrawSetDoubleBuffer_X(PetscDraw draw)
312: {
313: PetscDraw_X *win = (PetscDraw_X*)draw->data;
314: PetscMPIInt rank;
318: if (win->drw) return(0);
319: MPI_Comm_rank(PetscObjectComm((PetscObject)draw),&rank);
321: PetscDrawCollectiveBegin(draw);
322: if (!rank) {PetscDrawXiQuickPixmap(win);}
323: PetscDrawCollectiveEnd(draw);
324: MPI_Bcast(&win->drw,1,MPI_UNSIGNED_LONG,0,PetscObjectComm((PetscObject)draw));
325: return(0);
326: }
328: static PetscErrorCode PetscDrawGetPopup_X(PetscDraw draw,PetscDraw *popup)
329: {
330: PetscDraw_X *win = (PetscDraw_X*)draw->data;
331: PetscBool flg = PETSC_TRUE;
335: PetscOptionsGetBool(((PetscObject)draw)->options,((PetscObject)draw)->prefix,"-draw_popup",&flg,NULL);
336: if (!flg || !win->win) {*popup = NULL; return(0);}
338: PetscDrawCreate(PetscObjectComm((PetscObject)draw),draw->display,NULL,win->x,win->y+win->h+10,220,220,popup);
339: PetscObjectSetOptionsPrefix((PetscObject)*popup,"popup_");
340: PetscObjectAppendOptionsPrefix((PetscObject)*popup,((PetscObject)draw)->prefix);
341: PetscDrawSetType(*popup,PETSC_DRAW_X);
342: draw->popup = *popup;
343: return(0);
344: }
346: static PetscErrorCode PetscDrawSetTitle_X(PetscDraw draw,const char title[])
347: {
348: PetscDraw_X *win = (PetscDraw_X*)draw->data;
349: PetscMPIInt rank;
353: if (!win->win) return(0);
354: MPI_Comm_rank(PetscObjectComm((PetscObject)draw),&rank);
355: PetscDrawCollectiveBegin(draw);
356: if (!rank) {
357: size_t len;
358: XTextProperty prop;
359: PetscStrlen(title,&len);
360: XGetWMName(win->disp,win->win,&prop);
361: XFree((void*)prop.value);
362: prop.value = (unsigned char*)title;
363: prop.nitems = (long)len;
364: XSetWMName(win->disp,win->win,&prop);
365: }
366: PetscDrawCollectiveEnd(draw);
367: return(0);
368: }
370: static PetscErrorCode PetscDrawCheckResizedWindow_X(PetscDraw draw)
371: {
372: PetscDraw_X *win = (PetscDraw_X*)draw->data;
373: int xywh[4];
374: PetscMPIInt rank;
378: if (!win->win) return(0);
379: MPI_Comm_rank(PetscObjectComm((PetscObject)draw),&rank);
381: PetscDrawCollectiveBegin(draw);
382: if (!rank) {PetscDrawXiGetGeometry(win,xywh,xywh+1,xywh+2,xywh+3);}
383: PetscDrawCollectiveEnd(draw);
384: MPI_Bcast(xywh,4,MPI_INT,0,PetscObjectComm((PetscObject)draw));
386: /* record new window position */
387: draw->x = win->x = xywh[0];
388: draw->y = win->y = xywh[1];
389: if (xywh[2] == win->w && xywh[3] == win->h) return(0);
390: /* record new window sizes */
391: draw->w = win->w = xywh[2];
392: draw->h = win->h = xywh[3];
394: /* recreate pixmap (only first processor does this) */
395: PetscDrawCollectiveBegin(draw);
396: if (!rank && win->drw) {PetscDrawXiQuickPixmap(win);}
397: PetscDrawCollectiveEnd(draw);
398: MPI_Bcast(&win->drw,1,MPI_UNSIGNED_LONG,0,PetscObjectComm((PetscObject)draw));
399: /* reset the clipping */
400: PetscDrawSetViewport_X(draw,draw->port_xl,draw->port_yl,draw->port_xr,draw->port_yr);
401: return(0);
402: }
404: static PetscErrorCode PetscDrawResizeWindow_X(PetscDraw draw,int w,int h)
405: {
406: PetscDraw_X *win = (PetscDraw_X*)draw->data;
407: PetscMPIInt rank;
411: if (w == win->w && h == win->h) return(0);
412: MPI_Comm_rank(PetscObjectComm((PetscObject)draw),&rank);
414: if (win->win) {
415: PetscDrawCollectiveBegin(draw);
416: if (!rank) {PetscDrawXiResizeWindow(win,w,h);}
417: PetscDrawCollectiveEnd(draw);
418: PetscDrawCheckResizedWindow_X(draw);
419: } else if (win->drw) {
420: draw->w = win->w = w; draw->h = win->h = h;
421: /* recreate pixmap (only first processor does this) */
422: PetscDrawCollectiveBegin(draw);
423: if (!rank) {PetscDrawXiQuickPixmap(win);}
424: MPI_Bcast(&win->drw,1,MPI_UNSIGNED_LONG,0,PetscObjectComm((PetscObject)draw));
425: /* reset the clipping */
426: PetscDrawCollectiveEnd(draw);
427: PetscDrawSetViewport_X(draw,draw->port_xl,draw->port_yl,draw->port_xr,draw->port_yr);
428: }
429: return(0);
430: }
432: #include <X11/cursorfont.h>
434: static PetscErrorCode PetscDrawGetMouseButton_X(PetscDraw draw,PetscDrawButton *button,PetscReal *x_user,PetscReal *y_user,PetscReal *x_phys,PetscReal *y_phys)
435: {
436: PetscDraw_X *win = (PetscDraw_X*)draw->data;
437: Cursor cursor;
438: XEvent report;
439: Window root,child;
440: int root_x,root_y,px=0,py=0;
441: unsigned int w,h,border,depth;
442: unsigned int keys_button;
443: PetscMPIInt rank;
444: PetscReal xx,yy;
448: *button = PETSC_BUTTON_NONE;
449: if (!win->win) return(0);
450: MPI_Comm_rank(PetscObjectComm((PetscObject)draw),&rank);
452: PetscDrawCollectiveBegin(draw);
453: if (rank) goto finally;
455: /* change cursor to indicate input */
456: cursor = XCreateFontCursor(win->disp,XC_hand2); if (!cursor) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Unable to create X cursor");
457: XDefineCursor(win->disp,win->win,cursor);
458: /* wait for mouse button events */
459: XSelectInput(win->disp,win->win,ButtonPressMask|ButtonReleaseMask);
460: while (XCheckTypedEvent(win->disp,ButtonPress,&report));
461: XMaskEvent(win->disp,ButtonReleaseMask,&report);
462: /* get mouse pointer coordinates */
463: XQueryPointer(win->disp,report.xmotion.window,&root,&child,&root_x,&root_y,&px,&py,&keys_button);
464: /* the user may resize the window before pressing the mouse button */
465: XGetGeometry(win->disp,win->win,&root,&root_x,&root_y,&w,&h,&border,&depth);
466: /* cleanup input event handler and cursor */
467: XSelectInput(win->disp,win->win,NoEventMask);
468: XUndefineCursor(win->disp,win->win);
469: XFreeCursor(win->disp, cursor);
470: XSync(win->disp,False);
472: switch (report.xbutton.button) {
473: case Button1: *button = PETSC_BUTTON_LEFT; break;
474: case Button2: *button = PETSC_BUTTON_CENTER; break;
475: case Button3: *button = PETSC_BUTTON_RIGHT; break;
476: case Button4: *button = PETSC_BUTTON_WHEEL_UP; break;
477: case Button5: *button = PETSC_BUTTON_WHEEL_DOWN; break;
478: }
479: if (report.xbutton.state & ShiftMask) {
480: switch (report.xbutton.button) {
481: case Button1: *button = PETSC_BUTTON_LEFT_SHIFT; break;
482: case Button2: *button = PETSC_BUTTON_CENTER_SHIFT; break;
483: case Button3: *button = PETSC_BUTTON_RIGHT_SHIFT; break;
484: }
485: }
486: xx = ((PetscReal)px)/w;
487: yy = 1 - ((PetscReal)py)/h;
488: if (x_user) *x_user = draw->coor_xl + (xx - draw->port_xl)*(draw->coor_xr - draw->coor_xl)/(draw->port_xr - draw->port_xl);
489: if (y_user) *y_user = draw->coor_yl + (yy - draw->port_yl)*(draw->coor_yr - draw->coor_yl)/(draw->port_yr - draw->port_yl);
490: if (x_phys) *x_phys = xx;
491: if (y_phys) *y_phys = yy;
493: finally:
494: PetscDrawCollectiveEnd(draw);
495: PetscDrawCheckResizedWindow_X(draw);
496: return(0);
497: }
499: static PetscErrorCode PetscDrawPause_X(PetscDraw draw)
500: {
501: PetscDraw_X *win = (PetscDraw_X*)draw->data;
505: if (!win->win) return(0);
506: if (draw->pause > 0) PetscSleep(draw->pause);
507: else if (draw->pause == -1) {
508: PetscDrawButton button = PETSC_BUTTON_NONE;
509: PetscDrawGetMouseButton(draw,&button,NULL,NULL,NULL,NULL);
510: if (button == PETSC_BUTTON_CENTER) draw->pause = 0;
511: }
512: return(0);
513: }
515: static PetscErrorCode PetscDrawDestroy_X(PetscDraw draw)
516: {
517: PetscDraw_X *win = (PetscDraw_X*)draw->data;
521: PetscDrawDestroy(&draw->popup);
522: PetscDrawXiClose(win);
523: PetscFree(draw->data);
524: return(0);
525: }
527: static PetscErrorCode PetscDrawGetSingleton_X(PetscDraw,PetscDraw*);
528: static PetscErrorCode PetscDrawRestoreSingleton_X(PetscDraw,PetscDraw*);
529: PETSC_INTERN PetscErrorCode PetscDrawGetImage_X(PetscDraw,unsigned char[][3],unsigned int*,unsigned int*,unsigned char*[]);
531: static struct _PetscDrawOps DvOps = { PetscDrawSetDoubleBuffer_X,
532: PetscDrawFlush_X,
533: PetscDrawLine_X,
534: NULL,
535: NULL,
536: PetscDrawPoint_X,
537: NULL,
538: PetscDrawString_X,
539: PetscDrawStringVertical_X,
540: PetscDrawStringSetSize_X,
541: PetscDrawStringGetSize_X,
542: PetscDrawSetViewport_X,
543: PetscDrawClear_X,
544: PetscDrawRectangle_X,
545: PetscDrawTriangle_X,
546: PetscDrawEllipse_X,
547: PetscDrawGetMouseButton_X,
548: PetscDrawPause_X,
549: NULL,
550: NULL,
551: PetscDrawGetPopup_X,
552: PetscDrawSetTitle_X,
553: PetscDrawCheckResizedWindow_X,
554: PetscDrawResizeWindow_X,
555: PetscDrawDestroy_X,
556: NULL,
557: PetscDrawGetSingleton_X,
558: PetscDrawRestoreSingleton_X,
559: NULL,
560: PetscDrawGetImage_X,
561: NULL,
562: PetscDrawArrow_X,
563: PetscDrawCoordinateToPixel_X,
564: PetscDrawPixelToCoordinate_X,
565: PetscDrawPointPixel_X,
566: NULL};
569: static PetscErrorCode PetscDrawGetSingleton_X(PetscDraw draw,PetscDraw *sdraw)
570: {
571: PetscDraw_X *Xwin = (PetscDraw_X*)draw->data,*sXwin;
575: PetscDrawCreate(PETSC_COMM_SELF,draw->display,draw->title,draw->x,draw->y,draw->w,draw->h,sdraw);
576: PetscObjectChangeTypeName((PetscObject)*sdraw,PETSC_DRAW_X);
577: PetscMemcpy((*sdraw)->ops,&DvOps,sizeof(DvOps));
579: if (draw->popup) {
580: PetscDrawGetSingleton(draw->popup,&(*sdraw)->popup);
581: }
582: (*sdraw)->pause = draw->pause;
583: (*sdraw)->coor_xl = draw->coor_xl;
584: (*sdraw)->coor_xr = draw->coor_xr;
585: (*sdraw)->coor_yl = draw->coor_yl;
586: (*sdraw)->coor_yr = draw->coor_yr;
587: (*sdraw)->port_xl = draw->port_xl;
588: (*sdraw)->port_xr = draw->port_xr;
589: (*sdraw)->port_yl = draw->port_yl;
590: (*sdraw)->port_yr = draw->port_yr;
592: /* share drawables (windows and/or pixmap) from the parent draw */
593: PetscNewLog(*sdraw,&sXwin);
594: (*sdraw)->data = (void*)sXwin;
595: PetscDrawXiInit(sXwin,draw->display);
596: if (Xwin->win) {
597: PetscDrawXiQuickWindowFromWindow(sXwin,Xwin->win);
598: sXwin->drw = Xwin->drw; /* XXX If the window is ever resized, this is wrong! */
599: } else if (Xwin->drw) {
600: PetscDrawXiColormap(sXwin);
601: sXwin->drw = Xwin->drw;
602: }
603: PetscDrawXiGetGeometry(sXwin,&sXwin->x,&sXwin->y,&sXwin->w,&sXwin->h);
604: (*sdraw)->x = sXwin->x; (*sdraw)->y = sXwin->y;
605: (*sdraw)->w = sXwin->w; (*sdraw)->h = sXwin->h;
606: return(0);
607: }
609: static PetscErrorCode PetscDrawRestoreSingleton_X(PetscDraw draw,PetscDraw *sdraw)
610: {
614: if (draw->popup && (*sdraw)->popup) {
615: PetscBool isdrawx;
616: PetscDraw_X *pXwin = (PetscDraw_X*)draw->popup->data;
617: PetscDraw_X *sXwin = (PetscDraw_X*)(*sdraw)->popup->data;
618: PetscObjectTypeCompare((PetscObject)draw->popup,PETSC_DRAW_X,&isdrawx);
619: if (!isdrawx) goto finally;
620: PetscObjectTypeCompare((PetscObject)(*sdraw)->popup,PETSC_DRAW_X,&isdrawx);
621: if (!isdrawx) goto finally;
622: if (sXwin->win == pXwin->win) {
623: PetscDrawRestoreSingleton(draw->popup,&(*sdraw)->popup);
624: }
625: }
626: finally:
627: PetscDrawDestroy(sdraw);
628: return(0);
629: }
631: static PetscErrorCode PetscDrawXGetDisplaySize_Private(const char name[],int *width,int *height,PetscBool *has_display)
632: {
633: Display *display;
636: display = XOpenDisplay(name);
637: if (!display) {
638: *width = *height = 0;
639: (*PetscErrorPrintf)("Unable to open display on %s\n\
640: Make sure your COMPUTE NODES are authorized to connect\n\
641: to this X server and either your DISPLAY variable\n\
642: is set or you use the -display name option\n",name);
643: *has_display = PETSC_FALSE;
644: return(0);
645: }
646: *has_display = PETSC_TRUE;
647: *width = (int)DisplayWidth(display,DefaultScreen(display));
648: *height = (int)DisplayHeight(display,DefaultScreen(display));
649: XCloseDisplay(display);
650: return(0);
651: }
653: /*MC
654: PETSC_DRAW_X - PETSc graphics device that uses either X windows or its virtual version Xvfb
656: Options Database Keys:
657: + -display <display> - sets the display to use
658: . -x_virtual - forces use of a X virtual display Xvfb that will not display anything but -draw_save will still work.
659: Xvfb is automatically started up in PetscSetDisplay() with this option
660: . -draw_size w,h - percentage of screeen (either 1, .5, .3, .25), or size in pixels
661: . -geometry x,y,w,h - set location and size in pixels
662: . -draw_virtual - do not open a window (draw on a pixmap), -draw_save will still work
663: - -draw_double_buffer - avoid window flickering (draw on pixmap and flush to window)
665: Level: beginner
667: .seealso: PetscDrawOpenX(), PetscDrawSetDisplay(), PetscDrawSetFromOptions()
669: M*/
671: PETSC_EXTERN PetscErrorCode PetscDrawCreate_X(PetscDraw draw)
672: {
673: PetscDraw_X *Xwin;
675: PetscMPIInt rank;
676: int x = draw->x,y = draw->y,w = draw->w,h = draw->h;
677: static int xavailable = 0,yavailable = 0,ybottom = 0,xmax = 0,ymax = 0;
678: PetscBool set,dvirtual = PETSC_FALSE,doublebuffer = PETSC_TRUE,has_display;
679: PetscInt xywh[4],osize = 4,nsizes=2;
680: PetscReal sizes[2] = {.3,.3};
683: /* get the display variable */
684: if (!draw->display) {
685: PetscMalloc1(256,&draw->display);
686: PetscGetDisplay(draw->display,256);
687: }
689: /* initialize the display size */
690: if (!xmax) {
691: PetscDrawXGetDisplaySize_Private(draw->display,&xmax,&ymax,&has_display);
692: /* if some processors fail on this and others succed then this is a problem ! */
693: if (!has_display) {
694: (*PetscErrorPrintf)("PETSc unable to use X windows\nproceeding without graphics\n");
695: PetscDrawSetType(draw,PETSC_DRAW_NULL);
696: return(0);
697: }
698: }
700: /* allow user to set size of drawable */
701: PetscOptionsGetRealArray(((PetscObject)draw)->options,((PetscObject)draw)->prefix,"-draw_size",sizes,&nsizes,&set);
702: if (set && nsizes == 1 && sizes[0] > 1.0) sizes[1] = sizes[0];
703: if (set) {
704: if (sizes[0] > 1.0) w = (int)sizes[0];
705: else if (sizes[0] == 1.0) w = PETSC_DRAW_FULL_SIZE;
706: else if (sizes[0] == .5) w = PETSC_DRAW_HALF_SIZE;
707: else if (sizes[0] == .3) w = PETSC_DRAW_THIRD_SIZE;
708: else if (sizes[0] == .25) w = PETSC_DRAW_QUARTER_SIZE;
709: if (sizes[1] > 1.0) h = (int)sizes[1];
710: else if (sizes[1] == 1.0) h = PETSC_DRAW_FULL_SIZE;
711: else if (sizes[1] == .5) h = PETSC_DRAW_HALF_SIZE;
712: else if (sizes[1] == .3) h = PETSC_DRAW_THIRD_SIZE;
713: else if (sizes[1] == .25) h = PETSC_DRAW_QUARTER_SIZE;
714: }
715: if (w == PETSC_DECIDE || w == PETSC_DEFAULT) w = draw->w = 300;
716: if (h == PETSC_DECIDE || h == PETSC_DEFAULT) h = draw->h = 300;
717: switch (w) {
718: case PETSC_DRAW_FULL_SIZE: w = draw->w = (xmax - 10); break;
719: case PETSC_DRAW_HALF_SIZE: w = draw->w = (xmax - 20)/2; break;
720: case PETSC_DRAW_THIRD_SIZE: w = draw->w = (xmax - 30)/3; break;
721: case PETSC_DRAW_QUARTER_SIZE: w = draw->w = (xmax - 40)/4; break;
722: }
723: switch (h) {
724: case PETSC_DRAW_FULL_SIZE: h = draw->h = (ymax - 10); break;
725: case PETSC_DRAW_HALF_SIZE: h = draw->h = (ymax - 20)/2; break;
726: case PETSC_DRAW_THIRD_SIZE: h = draw->h = (ymax - 30)/3; break;
727: case PETSC_DRAW_QUARTER_SIZE: h = draw->h = (ymax - 40)/4; break;
728: }
730: PetscOptionsGetBool(((PetscObject)draw)->options,((PetscObject)draw)->prefix,"-draw_virtual",&dvirtual,NULL);
732: if (!dvirtual) {
734: /* allow user to set location and size of window */
735: xywh[0] = x; xywh[1] = y; xywh[2] = w; xywh[3] = h;
736: PetscOptionsGetIntArray(((PetscObject)draw)->options,((PetscObject)draw)->prefix,"-geometry",xywh,&osize,NULL);
737: x = (int)xywh[0]; y = (int)xywh[1]; w = (int)xywh[2]; h = (int)xywh[3];
738: if (w == PETSC_DECIDE || w == PETSC_DEFAULT) w = 300;
739: if (h == PETSC_DECIDE || h == PETSC_DEFAULT) h = 300;
740: draw->x = x; draw->y = y; draw->w = w; draw->h = h;
742: if (draw->x == PETSC_DECIDE || draw->y == PETSC_DECIDE) {
743: /*
744: PETSc tries to place windows starting in the upper left corner
745: and moving across to the right.
747: +0,0-------------------------------------------+
748: | Region used so far +xavailable,yavailable |
749: | | |
750: | | |
751: +--------------------- +ybottom |
752: | |
753: | |
754: +----------------------------------------------+xmax,ymax
756: */
757: /* First: can we add it to the right? */
758: if (xavailable + w + 10 <= xmax) {
759: x = xavailable;
760: y = yavailable;
761: ybottom = PetscMax(ybottom,y + h + 30);
762: } else {
763: /* No, so add it below on the left */
764: xavailable = x = 0;
765: yavailable = y = ybottom;
766: ybottom = ybottom + h + 30;
767: }
768: }
769: /* update available region */
770: xavailable = PetscMax(xavailable,x + w + 10);
771: if (xavailable >= xmax) {
772: xavailable = 0;
773: yavailable = yavailable + h + 30;
774: ybottom = yavailable;
775: }
776: if (yavailable >= ymax) {
777: y = 0;
778: yavailable = 0;
779: ybottom = 0;
780: }
782: } /* endif(!dvirtual) */
784: MPI_Comm_rank(PetscObjectComm((PetscObject)draw),&rank);
785: if (!rank && (w <= 0 || h <= 0)) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Negative window width or height");
787: PetscNewLog(draw,&Xwin);
788: PetscMemcpy(draw->ops,&DvOps,sizeof(DvOps));
789: draw->data = (void*)Xwin;
791: PetscDrawXiInit(Xwin,draw->display);
792: if (!dvirtual) {
793: Xwin->x = x; Xwin->y = y;
794: Xwin->w = w; Xwin->h = h;
795: if (!rank) {PetscDrawXiQuickWindow(Xwin,draw->title,x,y,w,h);}
796: MPI_Bcast(&Xwin->win,1,MPI_UNSIGNED_LONG,0,PetscObjectComm((PetscObject)draw));
797: if (rank) {PetscDrawXiQuickWindowFromWindow(Xwin,Xwin->win);}
798: } else {
799: Xwin->x = 0; Xwin->y = 0;
800: Xwin->w = w; Xwin->h = h;
801: PetscDrawXiColormap(Xwin);
802: if (!rank) {PetscDrawXiQuickPixmap(Xwin);}
803: MPI_Bcast(&Xwin->drw,1,MPI_UNSIGNED_LONG,0,PetscObjectComm((PetscObject)draw));
804: }
805: PetscDrawXiGetGeometry(Xwin,&Xwin->x,&Xwin->y,&Xwin->w,&Xwin->h);
806: draw->x = Xwin->x; draw->y = Xwin->y;
807: draw->w = Xwin->w; draw->h = Xwin->h;
809: PetscOptionsGetBool(((PetscObject)draw)->options,((PetscObject)draw)->prefix,"-draw_double_buffer",&doublebuffer,NULL);
810: if (doublebuffer) {PetscDrawSetDoubleBuffer(draw);}
811: return(0);
812: }