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/* Copyright (c) 1992 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* Microsoft Mouse handling routines |
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*/ |
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#include <stdio.h> |
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#include <dos.h> |
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#include <i86.h> |
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#include <graph.h> |
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#include "driver.h" |
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#define NULL 0 |
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#define M_RIGHTBUTT 0x8 |
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#define M_LEFTBUTT 0x2 |
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#define M_MOTION 0x1 |
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static int ydispsize; |
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static int xdispsize, ydispsize; |
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static int crad; |
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#define right_button (mouse_event & M_RIGHTBUTT) |
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#define left_button (mouse_event & M_LEFTBUTT) |
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extern char *bmalloc(); |
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static char *imp = NULL; |
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static int curx = -1, cury = -1; |
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#define xcmin (curx-crad<0 ? 0 : curx-crad) |
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#define ycmin (cury-crad<0 ? 0 : cury-crad) |
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#define xcmax (curx+crad>=xdispsize ? xdispsize-1 : curx+crad) |
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#define ycmax (cury+crad>=ydispsize ? ydispsize-1 : cury+crad) |
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if (imp == NULL && |
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(imp = bmalloc(_imagesize(0,0,2*crad+1,2*crad+1))) == NULL) { |
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quit(1); |
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} |
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if (curx >= 0 & cury >= 0) /* clear old cursor */ |
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_putimage(curx-crad, cury-crad, imp, _GPSET); |
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_putimage(xcmin, ycmin, imp, _GPSET); |
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/* record new position */ |
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curx = newx; cury = newy; |
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if (curx < 0 | cury < 0) |
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return; /* no cursor */ |
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/* save under new cursor */ |
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_getimage(newx-crad,newy-crad,newx+crad,newy+crad, imp); |
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_getimage(xcmin, ycmin, xcmax, ycmax, imp); |
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/* draw new cursor */ |
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_setcolor(1); |
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_rectangle(_GFILLINTERIOR, newx-crad, newy-1, newx+crad, newy+1); |
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_rectangle(_GFILLINTERIOR, newx-1, newy-crad, newx+1, newy+crad); |
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_rectangle(_GFILLINTERIOR, xcmin, cury-1, xcmax, cury+1); |
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_rectangle(_GFILLINTERIOR, curx-1, ycmin, curx+1, ycmax); |
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_setcolor(0); |
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_moveto(newx-crad+1, newy); |
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_lineto(newx+crad-1, newy); |
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_moveto(newx, newy-crad+1); |
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_lineto(newx, newy+crad-1); |
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_moveto(xcmin+1, cury); |
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_lineto(xcmax-1, cury); |
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_moveto(curx, ycmin+1); |
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_lineto(curx, ycmax-1); |
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#undef xcmin |
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#undef ycmin |
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#undef xcmax |
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#undef ycmax |
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} |
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/* get relevant parameters */ |
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xdispsize = dp->xsiz; |
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ydispsize = dp->ysiz; |
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crad = dp->ysiz/40; |
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/* set screen limits */ |
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inregs.w.ax = 0x7; /* horizontal resolution */ |
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inregs.w.cx = 0; |
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inregs.w.dx = xdispsize-1; |
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int386x( 0x33, &inregs, &outregs, &sregs ); |
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inregs.w.ax = 0x8; /* vertical resolution */ |
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inregs.w.cx = 0; |
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inregs.w.dx = ydispsize-1; |
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int386x( 0x33, &inregs, &outregs, &sregs ); |
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/* install watcher */ |
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inregs.w.ax = 0xC; |
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dp->getcur = ms_getcur; |
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} |
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void |
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ms_gcdone( dp ) |
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struct driver *dp; |
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{ |
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union REGS inregs, outregs; |
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if (dp->getcur != ms_getcur) |
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return; /* not installed */ |
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dp->getcur = NULL; |
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/* uninstall watcher */ |
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inregs.w.ax = 0; |
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int386 (0x33, &inregs, &outregs); |
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} |
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