1: #include <X/mit-copyright.h>
   2: 
   3: /* Copyright    Massachusetts Institute of Technology    1985	*/
   4: 
   5: /*
   6:  *	Change - This subroutine implements window size manipulation
   7:  *	for the X Window System window manager (xwm).
   8:  *
   9:  */
  10: 
  11: #ifndef lint
  12: static char *rcsid_Change_c = "$Header: Change.c,v 10.3 86/02/01 16:09:10 tony Rel $";
  13: #endif
  14: 
  15: #include "xwm.h"
  16: 
  17: Bool Change(window, x0, y0)
  18:     Window window;          /* Event window. */
  19:     int x0, y0;             /* Event mouse coordinates. */
  20: {
  21:     register WindowInfo window_info;    /* Event window info. */
  22:     register WindowInfo assoc_info; /* Icon's associated window info. */
  23:     int d;              /* ??? */
  24:     int t;              /* ??? */
  25:     int x, y;               /* ??? */
  26:     int h0, hinc, w0, winc, wadd, hadd; /* ??? */
  27:     int x1, y1, x2, y2;         /* ??? */
  28:     int mx, my;             /* ??? */
  29:     int ox, oy;             /* ??? */
  30:     int lx, ly;             /* ??? */
  31:     int pop_x, pop_y;           /* ??? */
  32:     int hsize, vsize;           /* ??? */
  33:     int dx, dy;             /* ??? */
  34:     int status;             /* Routine call return status. */
  35:     int num_vectors;            /* Number of vectors to XDraw. */
  36:     Window assoc;           /* Window represented by the icon. */
  37:     Window sub_win;         /* Mouse query sub window. */
  38:     XButtonEvent button_event;      /* Button event packet. */
  39:     Vertex box[MAX_BOX_VECTORS];    /* Box drawing vertex buffer. */
  40:     Vertex zap[MAX_ZAP_VECTORS];    /* Zap drawing vertex buffer. */
  41:     Bool domult;            /* ??? */
  42:     Bool stop;              /* Should the window stop changing? */
  43:     Bool changing;          /* Is the window changing? */
  44: 
  45:     /*
  46:      * Clear the vector buffers.
  47:      */
  48:     bzero(box, sizeof(box));
  49:     if (Zap) bzero(zap, sizeof(zap));
  50: 
  51:     /*
  52:      * Gather info about the event window.
  53:      */
  54:     status = XQueryWindow(window, &window_info);
  55:     if (status == FAILURE) {
  56:     /*
  57: 	 * If there is a query error, abort the operation.
  58: 	 */
  59:     return(FALSE);
  60:     }
  61: 
  62:     /*
  63:      * Check to see if we have an icon window.
  64:      */
  65:     if (window_info.type == IsIcon) {
  66:     /*
  67: 	 * We have an uniconify event, wait for a change in button state.
  68: 	 */
  69:     assoc = window_info.assoc_wind;
  70: 
  71:     /*
  72: 	 * Gather info about the assoc window.
  73: 	 */
  74:     status = XQueryWindow(assoc, &assoc_info);
  75:     if (status == FAILURE) {
  76:         /*
  77: 	     * If there is a query error, abort the operation.
  78: 	     */
  79:         return(FALSE);
  80:     }
  81: 
  82:     /*
  83: 	 * Spin our wheels untill there is a button event.
  84: 	 */
  85:     while (!GetButton(&button_event));
  86: 
  87:     /*
  88: 	 * Ok, we have a button event, process it.
  89: 	 */
  90:     if (
  91:         (button_event.type == ButtonReleased) &&
  92:         ((button_event.detail & ValueMask) == MiddleButton)
  93:     ){
  94:         /*
  95: 	     * Middle button came up, this means we have to uniconify the
  96: 	     * window.
  97: 	     */
  98: 
  99:         if (Zap) {
 100:         /*
 101: 		 * Store the zap vector buffer.
 102: 		 */
 103:         num_vectors = StoreZap(
 104:             zap,
 105:             assoc_info.x - 1,
 106:             assoc_info.y - 1,
 107:             assoc_info.x + assoc_info.width +
 108:             (assoc_info.bdrwidth << 1),
 109:             assoc_info.y + assoc_info.height +
 110:             (assoc_info.bdrwidth << 1),
 111:             window_info.x - 1,
 112:             window_info.y - 1,
 113:             window_info.x + window_info.width +
 114:             (window_info.bdrwidth << 1),
 115:             window_info.y + window_info.height +
 116:             (window_info.bdrwidth << 1)
 117:         );
 118:         }
 119: 
 120:         /*
 121: 	     * Map the window and synchronize.
 122: 	     */
 123:         XMapWindow(assoc);
 124: 
 125:         if (Zap) {
 126:         /*
 127: 		 * Draw the zap lines.
 128: 		 */
 129:         XDraw(
 130:             RootWindow,
 131:             zap, num_vectors,
 132:             DRAW_HEIGHT, DRAW_WIDTH,
 133:             DRAW_VALUE, DRAW_FUNC, DRAW_PLANES
 134:         );
 135:         XDraw(
 136:             RootWindow,
 137:             zap, num_vectors,
 138:             DRAW_HEIGHT, DRAW_WIDTH,
 139:             DRAW_VALUE, DRAW_FUNC, DRAW_PLANES
 140:         );
 141:         }
 142: 
 143:         /*
 144: 	     * Unmap the icon window.
 145: 	     */
 146:         XUnmapWindow(window);
 147: 
 148:         /*
 149: 	     * This changed the window, return TRUE.
 150: 	     */
 151:         return(TRUE);
 152:     }
 153:     else {
 154:         /*
 155: 	     * Some other button event occured.
 156: 	     * Don't change window, return FALSE.
 157: 	     */
 158:          return(FALSE);
 159:     }
 160:     }
 161: 
 162:     /*
 163:      * If we are here then we have a resize operation in progress.
 164:      */
 165: 
 166:     /*
 167:      * Get the event window resize hint.
 168:      */
 169:     XGetResizeHint(window, &w0, &h0, &winc, &hinc);
 170: 
 171:     /*
 172:      * If I ever have the time to REALLY figure the rest of this out I will
 173:      * comment it better.
 174:      */
 175:     wadd = winc >> 1;
 176:     hadd = hinc >> 1;
 177:     x1 = window_info.x;
 178:     y1 = window_info.y;
 179:     x2 = x1 + window_info.width + (window_info.bdrwidth << 1) - 1;
 180:     y2 = y1 + window_info.height + (window_info.bdrwidth << 1) - 1;
 181:     domult = (winc > 3 && hinc > 3 &&
 182:          (window_info.width - w0) % winc == 0 &&
 183:          (window_info.height - h0) % hinc == 0) ? TRUE : FALSE;
 184:     if (w0 == 0 && winc == 1 && h0 == 0 && hinc == 1) {
 185:     w0 = 1;
 186:     h0 = 1;
 187:     }
 188:     mx = x2 - window_info.width + w0 + winc;
 189:     my = y2 - window_info.height + h0 + hinc;
 190:     w0 += (window_info.bdrwidth << 1) - 1;
 191:     h0 += (window_info.bdrwidth << 1) - 1;
 192:     x = x2;
 193:     y = y2;
 194:     dx = 1;
 195:     dy = 1;
 196:     if (x0 - x1 < x2 - x0) {
 197:     dx = -1;
 198:     x = x1;
 199:     mx = x2 - (mx - x1);
 200:     t = x1; x1 = x2; x2 = t;
 201:     }
 202:     if (y0 - y1 < y2 - y0) {
 203:     dy = -1;
 204:     y = y1;
 205:     my = y2 - (my - y1);
 206:     t = y1; y1 = y2; y2 = t;
 207:     }
 208:     ox = ((x0 - window_info.x - window_info.bdrwidth) * 3) /
 209:         window_info.width;
 210:     oy = ((y0 - window_info.y - window_info.bdrwidth) * 3) /
 211:         window_info.height;
 212:     if (window_info.width > 2 && window_info.height > 2 && ((ox + oy) & 1)) {
 213:     if (ox & 1)
 214:         dx = 0;
 215:     else
 216:         dy = 0;
 217:     }
 218: 
 219:     stop = FALSE;
 220:     changing = FALSE;
 221:     ox = -1;
 222:     oy = -1;
 223:     lx = -1;
 224:     ly = -1;
 225: 
 226:     while (!stop) {
 227:     if (x != ox || y != oy) {
 228:         if (Grid) {
 229:             num_vectors = StoreGridBox(
 230:             box,
 231:             min(x1, x), min(y1, y),
 232:             max(x1, x), max(y1, y)
 233:         );
 234:         }
 235:         else {
 236:             num_vectors = StoreBox(
 237:             box,
 238:             min(x1, x), min(y1, y),
 239:             max(x1, x), max(y1, y)
 240:         );
 241:         }
 242:         if (domult && changing) {
 243:         hsize = (abs(x - x1) - w0) / winc;
 244:         vsize = (abs(y - y1) - h0) / hinc;
 245:         PText[0] = hsize / 100 + '0';
 246:         PText[1] = (hsize / 10) % 10 + '0';
 247:         PText[2] = hsize % 10 + '0';
 248:         PText[4] = vsize / 100 + '0';
 249:         PText[5] = (vsize / 10) % 10 + '0';
 250:         PText[6] = vsize % 10 + '0';
 251: 
 252:         /*
 253: 		 * If the font is not fixed width we have to
 254: 		 * clear the window to guarantee that the characters
 255: 		 * that were there before are erased.
 256: 		 */
 257:         if (!(PFontInfo.fixedwidth)) XClear(Pop);
 258:         XTextPad (
 259:             Pop,
 260:             PPadding, PPadding,
 261:             PText, PTextSize,
 262:             PFont, 0, 0,
 263:             PTextForground, PTextBackground,
 264:             GXcopy, AllPlanes
 265:         );
 266:         }
 267:         ox = x;
 268:         oy = y;
 269:     }
 270: 
 271:     if (changing) {
 272:         XDraw(
 273:         RootWindow,
 274:         box, num_vectors,
 275:         DRAW_HEIGHT, DRAW_WIDTH,
 276:         DRAW_VALUE, DRAW_FUNC, DRAW_PLANES
 277:         );
 278:         XDraw(
 279:         RootWindow,
 280:         box, num_vectors,
 281:         DRAW_HEIGHT, DRAW_WIDTH,
 282:         DRAW_VALUE, DRAW_FUNC, DRAW_PLANES
 283:         );
 284:     }
 285: 
 286:     if (XPending() && GetButton(&button_event)) {
 287:         if (
 288:         (button_event.type == ButtonReleased) &&
 289:         ((button_event.detail & ValueMask) == MiddleButton)
 290:         ){
 291:         x = button_event.x;
 292:         y = button_event.y;
 293:         stop = TRUE;
 294:         }
 295:         else {
 296:         if (domult && changing) {
 297:             XUnmapWindow(Pop);
 298:         }
 299:         return(FALSE);
 300:         }
 301:     }
 302:     else {
 303:         XQueryMouse(RootWindow, &x, &y, &sub_win);
 304:     }
 305: 
 306:     if (x == lx && y == ly) {
 307:         x = ox;
 308:         y = oy;
 309:         continue;
 310:     }
 311: 
 312:     lx = x;
 313:     ly = y;
 314: 
 315:     if (!changing) {
 316:         if (abs(x - x0) < Delta && abs(y - y0) < Delta) {
 317:         x = ox;
 318:         y = oy;
 319:         continue;
 320:         }
 321:         if (dx)
 322:         ox = -1;
 323:         else
 324:         oy = -1;
 325:         changing = TRUE;
 326:         if (domult) {
 327:         if (dx > 0)
 328:             pop_x = x1 + window_info.bdrwidth;
 329:         else if (dx < 0)
 330:             pop_x = x1 - PWidth - window_info.bdrwidth + 1;
 331:         else
 332:             pop_x = window_info.x + window_info.bdrwidth +
 333:              (window_info.width - PWidth) / 2;
 334:         if (dy > 0)
 335:             pop_y = y1 + window_info.bdrwidth;
 336:         else if (dy < 0)
 337:             pop_y = y1 - PHeight - window_info.bdrwidth + 1;
 338:         else
 339:             pop_y = window_info.y + window_info.bdrwidth +
 340:              (window_info.height - PHeight) / 2;
 341:         XMoveWindow(Pop, pop_x, pop_y);
 342:         XMapWindow(Pop);
 343:         }
 344:     }
 345:     if (dx) {
 346:         if ((d = abs(x - x0) + wadd) < 0)
 347:         d = 0;
 348:         d = (d / winc) * winc;
 349:         if (x < x0) {
 350:         x = x2 - d;
 351:         if (dx > 0 && x < mx)
 352:             x = mx;
 353:         } else {
 354:         x = x2 + d;
 355:         if (dx < 0 && x > mx)
 356:             x = mx;
 357:         }
 358:     } else
 359:         x = ox;
 360:     if (dy) {
 361:         if ((d = abs(y - y0) + hadd) < 0)
 362:         d = 0;
 363:         d = (d / hinc) * hinc;
 364:         if (y < y0) {
 365:         y = y2 - d;
 366:         if (dy > 0 && y < my)
 367:             y = my;
 368:         } else {
 369:         y = y2 + d;
 370:         if (dy < 0 && y > my)
 371:             y = my;
 372:         }
 373:     } else
 374:         y = oy;
 375:     }
 376:     if (!changing) return(FALSE);
 377:     if (x == x2 && y == y2) {
 378:     XUnmapWindow(Pop);
 379:     XRaiseWindow(window);
 380:     } else {
 381:     if (x < x1) {
 382:         t = x1; x1 = x; x = t;
 383:     }
 384:     if (y < y1) {
 385:         t = y1; y1 = y; y = t;
 386:     }
 387:     dx = x - x1 + 1 - (window_info.bdrwidth << 1);
 388:     dy = y - y1 + 1 - (window_info.bdrwidth << 1);
 389:     if (
 390:         (PWidth > window_info.width) ||
 391:         (PHeight > window_info.height) ||
 392:         (PWidth > dx) ||
 393:         (PHeight > dy)
 394:     ) {
 395:         XUnmapWindow(Pop);
 396:     }
 397:     else {
 398:         XUnmapTransparent(Pop);
 399:     }
 400:     XConfigureWindow(window, x1, y1, dx, dy);
 401:     }
 402:     return(TRUE);
 403: }

Defined functions

Change defined in line 17; used 2 times

Defined variables

rcsid_Change_c defined in line 12; never used
Last modified: 1986-02-01
Generated: 2016-12-26
Generated by src2html V0.67
page hit count: 1119
Valid CSS Valid XHTML 1.0 Strict