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- #include <lib9.h>
- #include <kernel.h>
- #include "draw.h"
- #include "tk.h"
- #include "canvs.h"
- #define O(t, e) ((long)(&((t*)0)->e))
- /* Rectangle Options (+ means implemented)
- +fill
- +outline
- +stipple
- +tags
- +width
- */
- typedef struct TkCrect TkCrect;
- struct TkCrect
- {
- int width;
- Image* stipple;
- };
- static
- TkOption rectopts[] =
- {
- "width", OPTnnfrac, O(TkCrect, width), nil,
- "stipple", OPTbmap, O(TkCrect, stipple), nil,
- nil
- };
- static
- TkOption itemopts[] =
- {
- "tags", OPTctag, O(TkCitem, tags), nil,
- "fill", OPTcolr, O(TkCitem, env), IAUX(TkCfill),
- "outline", OPTcolr, O(TkCitem, env), IAUX(TkCforegnd),
- nil
- };
- void
- tkcvsrectsize(TkCitem *i)
- {
- TkCrect *r;
- int w;
- r = TKobj(TkCrect, i);
- w = TKF2I(r->width)*2;
- i->p.bb = bbnil;
- tkpolybound(i->p.drawpt, i->p.npoint, &i->p.bb);
- i->p.bb = insetrect(i->p.bb, -w);
- }
- static void
- tkmkstipple(Image *stipple)
- {
- int locked;
- if (stipple != nil && !stipple->repl) {
- locked = lockdisplay(stipple->display);
- replclipr(stipple, 1, huger);
- if (locked)
- unlockdisplay(stipple->display);
- }
- }
- char*
- tkcvsrectcreat(Tk* tk, char *arg, char **val)
- {
- char *e;
- TkCrect *r;
- TkCitem *i;
- TkCanvas *c;
- TkOptab tko[3];
- c = TKobj(TkCanvas, tk);
- i = tkcnewitem(tk, TkCVrect, sizeof(TkCitem)+sizeof(TkCrect));
- if(i == nil)
- return TkNomem;
- r = TKobj(TkCrect, i);
- r->width = TKI2F(1);
- e = tkparsepts(tk->env->top, &i->p, &arg, 0);
- if(e != nil) {
- tkcvsfreeitem(i);
- return e;
- }
- if(i->p.npoint != 2) {
- tkcvsfreeitem(i);
- return TkFewpt;
- }
- tko[0].ptr = r;
- tko[0].optab = rectopts;
- tko[1].ptr = i;
- tko[1].optab = itemopts;
- tko[2].ptr = nil;
- e = tkparse(tk->env->top, arg, tko, nil);
- if(e != nil) {
- tkcvsfreeitem(i);
- return e;
- }
- tkmkstipple(r->stipple);
- e = tkcaddtag(tk, i, 1);
- if(e != nil) {
- tkcvsfreeitem(i);
- return e;
- }
- tkcvsrectsize(i);
- e = tkvalue(val, "%d", i->id);
- if(e != nil) {
- tkcvsfreeitem(i);
- return e;
- }
- tkcvsappend(c, i);
- tkbbmax(&c->update, &i->p.bb);
- tkcvssetdirty(tk);
- return nil;
- }
- char*
- tkcvsrectcget(TkCitem *i, char *arg, char **val)
- {
- TkOptab tko[3];
- TkCrect *r = TKobj(TkCrect, i);
- tko[0].ptr = r;
- tko[0].optab = rectopts;
- tko[1].ptr = i;
- tko[1].optab = itemopts;
- tko[2].ptr = nil;
- return tkgencget(tko, arg, val, i->env->top);
- }
- char*
- tkcvsrectconf(Tk *tk, TkCitem *i, char *arg)
- {
- char *e;
- TkOptab tko[3];
- TkCrect *r = TKobj(TkCrect, i);
- tko[0].ptr = r;
- tko[0].optab = rectopts;
- tko[1].ptr = i;
- tko[1].optab = itemopts;
- tko[2].ptr = nil;
- e = tkparse(tk->env->top, arg, tko, nil);
- tkcvsrectsize(i);
- tkmkstipple(r->stipple);
- return e;
- }
- void
- tkcvsrectfree(TkCitem *i)
- {
- TkCrect *r;
- r = TKobj(TkCrect, i);
- if(r->stipple)
- freeimage(r->stipple);
- }
- void
- tkcvsrectdraw(Image *img, TkCitem *i, TkEnv *pe)
- {
- int lw, rw;
- TkEnv *e;
- TkCrect *r;
- Rectangle d, rr;
- Point tr, bl;
- Image *pen;
- USED(pe);
- d.min = i->p.drawpt[0];
- d.max = i->p.drawpt[1];
- e = i->env;
- r = TKobj(TkCrect, i);
- pen = nil;
- if((e->set & (1<<TkCfill)))
- pen = tkgc(e, TkCfill);
- if(pen != nil)
- draw(img, d, pen, r->stipple, d.min);
- tr.x = d.max.x;
- tr.y = d.min.y;
- bl.x = d.min.x;
- bl.y = d.max.y;
- rw = (TKF2I(r->width) + 1)/2;
- if(rw <= 0)
- return;
- lw = (TKF2I(r->width))/2;
- pen = tkgc(e, TkCforegnd);
- if(pen != nil) {
- /* horizontal lines first */
- rr.min.x = d.min.x - lw;
- rr.max.x = d.max.x + rw;
- rr.min.y = d.min.y - lw;
- rr.max.y = d.min.y + rw;
- draw(img, rr, pen, nil, rr.min);
- rr.min.y += Dy(d);
- rr.max.y += Dy(d);
- draw(img, rr, pen, nil, rr.min);
- /* now the vertical */
- /* horizontal lines first */
- rr.min.x = d.min.x - lw;
- rr.max.x = d.min.x + rw;
- rr.min.y = d.min.y + rw;
- rr.max.y = d.max.y - lw;
- draw(img, rr, pen, nil, rr.min);
- rr.min.x += Dx(d);
- rr.max.x += Dx(d);
- draw(img, rr, pen, nil, rr.min);
- }
- }
- char*
- tkcvsrectcoord(TkCitem *i, char *arg, int x, int y)
- {
- char *e;
- TkCpoints p;
- if(arg == nil) {
- tkxlatepts(i->p.parampt, i->p.npoint, x, y);
- tkxlatepts(i->p.drawpt, i->p.npoint, TKF2I(x), TKF2I(y));
- i->p.bb = rectaddpt(i->p.bb, Pt(TKF2I(x), TKF2I(y)));
- }
- else {
- e = tkparsepts(i->env->top, &p, &arg, 0);
- if(e != nil)
- return e;
- if(p.npoint != 2) {
- tkfreepoint(&p);
- return TkFewpt;
- }
- tkfreepoint(&i->p);
- i->p = p;
- tkcvsrectsize(i);
- }
- return nil;
- }
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