ref: fb7dd4b3a868cb8987049c95bb32e6425a73c8b9
dir: /libtk/utils.c/
#include "lib9.h" #include "draw.h" #include "tk.h" struct TkCol { ulong rgba1; ulong rgba3; /* if mixed, otherwise DNotacolor */ Image* i; TkCol* forw; }; extern void rptwakeup(void*, void*); extern void* rptproc(char*, int, void*, int (*)(void*), int (*)(void*,int), void (*)(void*)); typedef struct Cmd Cmd; struct Cmd { char* name; char* (*fn)(TkTop*, char*, char**); }; static struct Cmd cmdmain[] = { "bind", tkbind, "button", tkbutton, "canvas", tkcanvas, "checkbutton", tkcheckbutton, "choicebutton", tkchoicebutton, "cursor", tkcursorcmd, "destroy", tkdestroy, "entry", tkentry, "focus", tkfocus, "frame", tkframe, "grab", tkgrab, "grid", tkgrid, "image", tkimage, "label", tklabel, "listbox", tklistbox, "lower", tklower, "menu", tkmenu, "menubutton", tkmenubutton, "pack", tkpack, "panel", tkpanel, "puts", tkputs, "radiobutton", tkradiobutton, "raise", tkraise, "scale", tkscale, "scrollbar", tkscrollbar, "see", tkseecmd, "send", tksend, "text", tktext, "update", tkupdatecmd, "variable", tkvariable, "winfo", tkwinfo, }; char* tkfont; /* * auto-repeating support * should perhaps be one rptproc per TkCtxt * This is not done for the moment as there isn't * a mechanism for terminating the rptproc */ static void *autorpt; static int rptid; static Tk *rptw; static void *rptnote; static void (*rptcb)(Tk*, void*, int); static long rptto; static int rptint; /* blinking carets - should be per TkCtxt */ static void *blinkrpt; static Tk *blinkw; static void (*blinkcb)(Tk*, int); static int blinkignore; static int blinkon; ulong tkrgba(int r, int g, int b, int a) { ulong p; if(r < 0) r = 0; else if(r > 255) r = 255; if(g < 0) g = 0; else if(g > 255) g = 255; if(b < 0) b = 0; else if(b > 255) b = 255; p = (r<<24)|(g<<16)|(b<<8)|0xFF; if(a == 255) return p; return setalpha(p, a); } /* to be replaced */ static int revalpha(int c, int a) { if (a == 0) return 0; return (c & 0xff) * 255 / a; } void tkrgbavals(ulong rgba, int *R, int *G, int *B, int *A) { int a; a = rgba & 0xff; *A = a; if (a != 0xff) { *R = revalpha(rgba>>24, a); *G = revalpha((rgba>>16) & 0xFF, a); *B = revalpha((rgba >> 8) & 0xFF, a); } else { *R = (rgba>>24); *G = ((rgba>>16) & 0xFF); *B = ((rgba >> 8) & 0xFF); } } static int tkcachecol(TkCtxt *c, Image *i, ulong one, ulong three) { TkCol *cc; cc = malloc(sizeof(*cc)); if(cc == nil) return 0; cc->rgba1 = one; cc->rgba3 = three; cc->i = i; cc->forw = c->chead; c->chead = cc; c->ncol++; /* we'll do LRU management at some point */ if(c->ncol > TkColcachesize){ static int warn; if(warn == 0){ warn = 1; print("tk: %d colours cached\n", TkColcachesize); } } return 1; } static Image* tkfindcol(TkCtxt *c, ulong one, ulong three) { TkCol *cc, **l; for(l = &c->chead; (cc = *l) != nil; l = &cc->forw) if(cc->rgba1 == one && cc->rgba3 == three){ /* move it up in the list */ *l = cc->forw; cc->forw = c->chead; c->chead = cc; /* we assume it will be used right away and not stored */ return cc->i; } return nil; } void tkfreecolcache(TkCtxt *c) { TkCol *cc; if(c == nil) return; while((cc = c->chead) != nil){ c->chead = cc->forw; freeimage(cc->i); free(cc); } c->ctail = nil; c->ncol = 0; } Image* tkcolormix(TkCtxt *c, ulong one, ulong three) { Image *i; Display *d; i = tkfindcol(c, one, three); if(i != nil) return i; d = c->display; i = allocimagemix(d, one, three); if(i == nil) return d->black; if(!tkcachecol(c, i, one, three)){ freeimage(i); return d->black; } return i; } Image* tkcolor(TkCtxt *c, ulong pix) { Image *i; Display *d; Rectangle r; d = c->display; if(pix == DWhite) return d->white; if(pix == DBlack) return d->black; i = tkfindcol(c, pix, DNotacolor); if(i != nil) return i; r.min = ZP; r.max.x = 1; r.max.y = 1; if ((pix & 0xff) == 0xff) i = allocimage(d, r, RGB24, 1, pix); else i = allocimage(d, r, RGBA32, 1, pix); if(i == nil) return d->black; if(!tkcachecol(c, i, pix, DNotacolor)) { freeimage(i); return d->black; } return i; } Image* tkgradient(TkCtxt *c, Rectangle r, int dir, ulong pix0, ulong pix1) { Display *d; Image *i; uchar *b, *p, *e; int c0[3], c1[3], delta[3], a, j, x, y, n, locked; Rectangle s; d = c->display; y = Dy(r); x = Dx(r); if(x <= 0 || y <= 0) { r = Rect(0, 0, 1, 1); x = y = 1; } /* TO DO: diagonal */ s = r; if(dir == Tkhorizontal){ n = x; r.max.y = r.min.y+1; }else{ n = y; r.max.x = r.min.x+1; } b = mallocz(3*n, 0); if(b == nil) return nil; locked = lockdisplay(d); i = allocimage(d, r, RGB24, 1, DNofill); if(i == nil) goto Ret; tkrgbavals(pix0, &c0[2], &c0[1], &c0[0], &a); tkrgbavals(pix1, &c1[2], &c1[1], &c1[0], &a); for(j = 0; j < 3; j++){ c0[j] <<= 12; c1[j] <<= 12; delta[j] = ((c1[j]-c0[j])+(1<<11))/n; } e = b+3*n; for(p = b; p < e; p += 3) { p[0] = c0[0]>>12; p[1] = c0[1]>>12; p[2] = c0[2]>>12; c0[0] += delta[0]; c0[1] += delta[1]; c0[2] += delta[2]; } loadimage(i, r, b, 3*n); replclipr(i, 1, s); Ret: if(locked) unlockdisplay(d); free(b); return i; } /* * XXX should be in libdraw? */ int tkchanhastype(ulong c, int t) { for(; c; c>>=8) if(TYPE(c) == t) return 1; return 0; } void tksettransparent(Tk *tk, int transparent) { if (transparent) tk->flag |= Tktransparent; else tk->flag &= ~Tktransparent; } int tkhasalpha(TkEnv *e, int col) { return (e->colors[col] & 0xff) != 0xff; } Image* tkgc(TkEnv *e, int col) { return tkcolor(e->top->ctxt, e->colors[col]); } /* * Todo: improve the fixed-point code * the 255 scale factor is used because RGB ranges 0-255 */ static void rgb2hsv(int r, int g, int b, int *h, int *s, int *v) { int min, max, delta; max = r; if(g > max) max = g; if(b > max) max = b; min = r; if(g < min) min = g; if(b < min) min = b; *v = max; if (max != 0) *s = ((max - min)*255) / max; else *s = 0; if (*s == 0) { *h = 0; /* undefined */ } else { delta = max - min; if (r == max) *h = (g - b)*255 / delta; else if (g == max) *h = (2*255) + ((b - r)*255) / delta; else if (b == max) *h = (4*255) + ((r - g)*255)/ delta; *h *= 60; if (*h < 0) *h += 360*255; *h /= 255; } } static void hsv2rgb(int h, int s, int v, int *r, int *g, int *b) { int i; int f,p,q,t; if (s == 0 && h == 0) { *r = *g = *b = v; /* achromatic case */ } else { if (h >= 360) h = 0; i = h / 60; h *= 255; h /= 60; f = h % 255; p = v * (255 - s); q = v * (255 - ((s * f)/255)); t = v * (255- ((s * (255 - f))/255)); p /= 255; q /= 255; t /= 255; switch (i) { case 0: *r = v; *g = t; *b = p; break; case 1: *r = q; *g = v; *b = p; break; case 2: *r = p; *g = v; *b = t; break; case 3: *r = p; *g = q; *b = v; break; case 4: *r = t; *g = p; *b = v; break; case 5: *r = v; *g = p; *b = q; break; } } } enum { MINDELTA = 0x10, DELTA = 0x30, }; ulong tkrgbashade(ulong rgba, int shade) { int R, G, B, A, h, s, v, vl, vd; if (shade == TkSameshade) return rgba; tkrgbavals(rgba, &R, &G, &B, &A); h = s = v = 0; rgb2hsv(R, G, B, &h, &s, &v); if (v < MINDELTA) { vd = v+DELTA; vl = vd+DELTA; } else if (v > 255-MINDELTA) { vl = v-DELTA; vd = vl-DELTA; } else { vl = v+DELTA; vd = v-DELTA; } v = (shade == TkLightshade)?vl:vd; if (v < 0) v = 0; if (v > 255) v = 255; hsv2rgb(h, s, v, &R, &G, &B); return tkrgba(R, G, B, A); } Image* tkgshade(TkEnv *e, int col, int shade) { ulong rgba; if (col == TkCbackgnd || col == TkCselectbgnd || col == TkCactivebgnd) return tkgc(e, col+shade); rgba = tkrgbashade(e->colors[col], shade); return tkcolor(e->top->ctxt, rgba); } TkEnv* tknewenv(TkTop *t) { TkEnv *e; e = malloc(sizeof(TkEnv)); if(e == nil) return nil; e->ref = 1; e->top = t; return e; } TkEnv* tkdefaultenv(TkTop *t) { int locked; TkEnv *env; Display *d; if(t->env != nil) { t->env->ref++; return t->env; } t->env = malloc(sizeof(TkEnv)); if(t->env == nil) return nil; env = t->env; env->ref = 1; env->top = t; if(tkfont == nil) tkfont = "/fonts/pelm/unicode.8.font"; d = t->display; env->font = font_open(d, tkfont); if(env->font == nil) { static int warn; if(warn == 0) { warn = 1; print("tk: font not found: %s\n", tkfont); } env->font = font_open(d, "*default*"); if(env->font == nil) { free(t->env); t->env = nil; return nil; } } locked = lockdisplay(d); env->wzero = stringwidth(env->font, "0"); if ( env->wzero <= 0 ) env->wzero = env->font->height / 2; if(locked) unlockdisplay(d); tksetenvcolours(env); return env; } void tkputenv(TkEnv *env) { Display *d; int locked; if(env == nil) return; env->ref--; if(env->ref != 0) return; d = env->top->display; locked = lockdisplay(d); if(env->font != nil) font_close(env->font); if(locked) unlockdisplay(d); free(env); } TkEnv* tkdupenv(TkEnv **env) { Display *d; TkEnv *e, *ne; e = *env; if(e->ref == 1) return e; ne = malloc(sizeof(TkEnv)); if(ne == nil) return nil; ne->ref = 1; ne->top = e->top; d = e->top->display; memmove(ne->colors, e->colors, sizeof(e->colors)); ne->set = e->set; ne->font = font_open(d, e->font->name); ne->wzero = e->wzero; e->ref--; *env = ne; return ne; } Tk* tknewobj(TkTop *t, int type, int n) { Tk *tk; tk = malloc(n); if(tk == 0) return 0; tk->type = type; /* Defaults */ tk->flag = Tktop; tk->relief = TKflat; tk->env = tkdefaultenv(t); if(tk->env == nil) { free(tk); return nil; } return tk; } void tkfreebind(TkAction *a) { TkAction *next; while(a != nil) { next = a->link; if((a->type & 0xff) == TkDynamic) free(a->arg); free(a); a = next; } } void tkfreename(TkName *f) { TkName *n; while(f != nil) { n = f->link; free(f); f = n; } } void tkfreeobj(Tk *tk) { TkCtxt *c; c = tk->env->top->ctxt; if(c != nil) { if(c->tkkeygrab == tk) c->tkkeygrab = nil; if(c->mgrab == tk) tksetmgrab(tk->env->top, nil); if(c->mfocus == tk) c->mfocus = nil; if(c->entered == tk) c->entered = nil; } if (tk == rptw) { /* cancel the autorepeat without notifying the widget */ rptid++; rptw = nil; } if (tk == blinkw) blinkw = nil; tkextnfreeobj(tk); tkmethod[tk->type]->free(tk); tkputenv(tk->env); tkfreebind(tk->binds); if(tk->name != nil) free(tk->name); free(tk); } char* tkaddchild(TkTop *t, Tk *tk, TkName **names) { TkName *n; Tk *f, **l; int found, len; char *s, *ep; n = *names; if(n == nil || n->name[0] != '.'){ if(n != nil) tkerr(t, n->name); return TkBadwp; } if (n->name[1] == '\0') return TkDupli; /* * check that the name is well-formed. * ep will point to end of parent component of the name. */ ep = nil; for (s = n->name + 1; *s; s++) { if (*s == '.'){ tkerr(t, n->name); return TkBadwp; } for (; *s && *s != '.'; s++) ; if (*s == '\0') break; ep = s; } if (ep == s - 1){ tkerr(t, n->name); return TkBadwp; } if (ep == nil) ep = n->name + 1; len = ep - n->name; found = 0; l = &t->root; for(f = *l; f; f = f->siblings) { if (f->name != nil) { if (strcmp(n->name, f->name->name) == 0) return TkDupli; if (!found && strncmp(n->name, f->name->name, len) == 0 && f->name->name[len] == '\0') found = 1; } l = &f->siblings; } if (0) { /* don't enable this until a reasonably major release... if ever */ /* * parent widget must already exist */ if (!found){ tkerr(t, n->name); return TkBadwp; } } *l = tk; tk->name = n; *names = n->link; return nil; } Tk* tklook(TkTop *t, char *wp, int parent) { Tk *f; char *p, *q; if(wp == nil) return nil; if(parent) { p = strdup(wp); if(p == nil) return nil; q = strrchr(p, '.'); if(q == nil) abort(); if(q == p) { free(p); return t->root; } *q = '\0'; } else p = wp; for(f = t->root; f; f = f->siblings) if ((f->name != nil) && (strcmp(f->name->name, p) == 0)) break; if(f != nil && (f->flag & Tkdestroy)) f = nil; if (parent) free(p); return f; } void tktextsdraw(Image *img, Rectangle r, TkEnv *e, int sbw) { Image *l, *d; Rectangle s; draw(img, r, tkgc(e, TkCselectbgnd), nil, ZP); s.min = r.min; s.min.x -= sbw; s.min.y -= sbw; s.max.x = r.max.x; s.max.y = r.min.y; l = tkgc(e, TkCselectbgndlght); draw(img, s, l, nil, ZP); s.max.x = s.min.x + sbw; s.max.y = r.max.y + sbw; draw(img, s, l, nil, ZP); s.max = r.max; s.max.x += sbw; s.max.y += sbw; s.min.x = r.min.x; s.min.y = r.max.y; d = tkgc(e, TkCselectbgnddark); draw(img, s, d, nil, ZP); s.min.x = r.max.x; s.min.y = r.min.y - sbw; draw(img, s, d, nil, ZP); } void tkbox(Image *i, Rectangle r, int bd, Image *fill) { if (bd > 0) { draw(i, Rect(r.min.x, r.min.y, r.max.x, r.min.y+bd), fill, nil, ZP); draw(i, Rect(r.min.x, r.min.y+bd, r.min.x+bd, r.max.y-bd), fill, nil, ZP); draw(i, Rect(r.min.x, r.max.y-bd, r.max.x, r.max.y), fill, nil, ZP); draw(i, Rect(r.max.x-bd, r.min.y+bd, r.max.x, r.max.y), fill, nil, ZP); } } void tkbevel(Image *i, Point o, int w, int h, int bw, Image *top, Image *bottom) { Rectangle r; int x, border; border = 2 * bw; r.min = o; r.max.x = r.min.x + w + border; r.max.y = r.min.y + bw; draw(i, r, top, nil, ZP); r.max.x = r.min.x + bw; r.max.y = r.min.y + h + border; draw(i, r, top, nil, ZP); r.max.x = o.x + w + border; r.max.y = o.y + h + border; r.min.x = o.x + bw; r.min.y = r.max.y - bw; for(x = 0; x < bw; x++) { draw(i, r, bottom, nil, ZP); r.min.x--; r.min.y++; } r.min.x = o.x + bw + w; r.min.y = o.y + bw; for(x = bw; x >= 0; x--) { draw(i, r, bottom, nil, ZP); r.min.x++; r.min.y--; } } /* * draw a relief border. * color is an index into tk->env->colors and assumes * light and dark versions following immediately after * that index */ void tkdrawrelief(Image *i, Tk *tk, Point o, int color, int rlf) { TkEnv *e; Image *l, *d, *t; int h, w, bd, bd1, bd2; if(tk->borderwidth == 0) return; h = tk->act.height; w = tk->act.width; e = tk->env; if (color == TkCbackgnd || color == TkCselectbgnd || color == TkCactivebgnd) { l = tkgc(e, color+TkLightshade); d = tkgc(e, color+TkDarkshade); } else { l = tkgshade(e, color, TkLightshade); d = tkgshade(e, color, TkDarkshade); } bd = tk->borderwidth; if(rlf < 0) rlf = TKraised; switch(rlf) { case TKflat: break; case TKsunken: tkbevel(i, o, w, h, bd, d, l); break; case TKraised: tkbevel(i, o, w, h, bd, l, d); break; case TKgroove: t = d; d = l; l = t; /* fall through */ case TKridge: bd1 = bd/2; bd2 = bd - bd1; if(bd1 > 0) tkbevel(i, o, w + 2*bd2, h + 2*bd2, bd1, l, d); o.x += bd1; o.y += bd1; tkbevel(i, o, w, h, bd2, d, l); break; } } Point tkstringsize(Tk *tk, char *text) { char *q; int locked; Display *d; Point p, t; if(text == nil) { p.x = 0; p.y = tk->env->font->height; return p; } d = tk->env->top->display; locked = lockdisplay(d); p = ZP; while(*text) { q = strchr(text, '\n'); if(q != nil) *q = '\0'; t = stringsize(tk->env->font, text); p.y += t.y; if(p.x < t.x) p.x = t.x; if(q == nil) break; text = q+1; *q = '\n'; } if(locked) unlockdisplay(d); return p; } static void tkulall(Image *i, Point o, Image *col, Font *f, char *text) { Rectangle r; r.max = stringsize(f, text); r.max = addpt(r.max, o); r.min.x = o.x; r.min.y = r.max.y - 1; draw(i, r, col, nil, ZP); } static void tkul(Image *i, Point o, Image *col, int ul, Font *f, char *text) { char c, *v; Rectangle r; v = text+ul+1; c = *v; *v = '\0'; r.max = stringsize(f, text); r.max = addpt(r.max, o); r.min = stringsize(f, v-1); *v = c; r.min.x = r.max.x - r.min.x; r.min.y = r.max.y - 1; r.max.y++; draw(i, r, col, nil, ZP); } void tkdrawstring(Tk *tk, Image *i, Point o, char *text, int ul, Image *col, int j) { int n, l, maxl, sox; char *q, *txt; Point p; TkEnv *e; e = tk->env; sox = maxl = 0; if(j != Tkleft){ maxl = 0; txt = text; while(*txt){ q = strchr(txt, '\n'); if(q != nil) *q = '\0'; l = stringwidth(e->font, txt); if(l > maxl) maxl = l; if(q == nil) break; txt = q+1; *q = '\n'; } sox = o.x; } while(*text) { q = strchr(text, '\n'); if(q != nil) *q = '\0'; if(j != Tkleft){ o.x = sox; l = stringwidth(e->font, text); if(j == Tkcenter) o.x += (maxl-l)/2; else o.x += maxl-l; } p = string(i, o, col, o, e->font, text); if(ul >= 0) { n = strlen(text); if(ul < n) { tkul(i, o, col, ul, e->font, text); ul = -1; } else if(ul == n) { tkulall(i, o, col, e->font, text); ul = -1; } else ul -= n; } o.y += e->font->height; if(q == nil) break; text = q+1; *q = '\n'; } } /* for debugging */ char* tkname(Tk *tk) { if(tk == nil) return "(nil)"; if(tk->name == nil) return "(noname)"; return tk->name->name; } Tk* tkdeliver(Tk *tk, int event, void *data) { Tk *dest; if(tk != nil && ((ulong)tk->type >= TKwidgets || (ulong)tk->name < 4096 && tk->name != nil)){ print("invalid Tk: type %d name %p\n", tk->type, tk->name); abort(); } //print("tkdeliver %v to %s\n", event, tkname(tk)); if(tk == nil || ((tk->flag&Tkdestroy) && event != TkDestroy)) return tk; if(event&(TkFocusin|TkFocusout) && (tk->flag&Tktakefocus)) tk->dirty = tkrect(tk, 1); if (tkmethod[tk->type]->deliver != nil) { dest = tkmethod[tk->type]->deliver(tk, event, data); if (dest == nil) return tk; tkdirty(tk); return dest; } if((tk->flag & Tkdisabled) == 0) tksubdeliver(tk, tk->binds, event, data, 0); tkdirty(tk); return tk; } static int nullop(char *fmt, ...) { USED(fmt); return 0; } int tksubdeliver(Tk *tk, TkAction *binds, int event, void *data, int extn) { TkAction *a; int delivered, genkey, delivered2, iskey; //int (*debug)(char *fmt, ...); if (!extn) return tkextndeliver(tk, binds, event, data); //debug = (tk->name && !strcmp(tk->name->name, ".cd")) ? print : nullop; //debug("subdeliver %v\n", event); if (event & TkTakefocus) { if (tk->flag & Tktakefocus) tksetkeyfocus(tk->env->top, tk, 0); return TkDdelivered; } delivered = TkDnone; genkey = 0; for(a = binds; a != nil; a = a->link) { if(event == a->event) { //debug(" exact match on %v\n", a->event); tkcmdbind(tk, event, a->arg, data); delivered = TkDdelivered; } else if (a->event == TkKey && (a->type>>8)==TkAadd) genkey = 1; } if(delivered != TkDnone && !((event & TkKey) && genkey)) return delivered; delivered2 = delivered; for(a = binds; a != nil; a = a->link) { /* * only bind to non-specific key events; if a specific * key event has already been delivered, only deliver event if * the non-specific binding was added. (TkAadd) */ if (a->event & TkExtns) continue; iskey = (a->event & TkKey); if (iskey ^ (event & TkKey)) continue; if(iskey && (TKKEY(a->event) != 0 || ((a->type>>8) != TkAadd && delivered != TkDnone))) continue; if(!iskey && (a->event & TkMotion) && (a->event&TkEpress) != 0) continue; if(!(event & TkDouble) && (a->event & TkDouble)) continue; if((event & ~TkDouble) & a->event) { //debug(" partial match on %v\n", a->event); tkcmdbind(tk, event, a->arg, data); delivered2 = TkDdelivered; } } return delivered2; } void tkcancel(TkAction **l, int event) { TkAction *a; for(a = *l; a; a = *l) { if(a->event == event) { *l = a->link; a->link = nil; tkfreebind(a); continue; } l = &a->link; } } static void tkcancela(TkAction **l, int event, int type, char *arg) { TkAction *a; for(a = *l; a; a = *l) { if(a->event == event && strcmp(a->arg, arg) == 0 && (a->type&0xff) == type){ *l = a->link; a->link = nil; tkfreebind(a); continue; } l = &a->link; } } char* tkaction(TkAction **l, int event, int type, char *arg, int how) { TkAction *a; if(arg == nil) return nil; if(how == TkArepl) tkcancel(l, event); else if(how == TkAadd){ for(a = *l; a; a = a->link) if(a->event == event && strcmp(a->arg, arg) == 0 && (a->type&0xff) == type){ a->type = type + (how << 8); return nil; } } else if(how == TkAsub){ tkcancela(l, event, type, arg); if(type == TkDynamic) /* should always be the case */ free(arg); return nil; } a = malloc(sizeof(TkAction)); if(a == nil) { if(type == TkDynamic) free(arg); return TkNomem; } a->event = event; a->arg = arg; a->type = type + (how << 8); a->link = *l; *l = a; return nil; } char* tkitem(char *buf, char *a) { char *e; while(*a && (*a == ' ' || *a == '\t')) a++; e = buf + Tkmaxitem - 1; while(*a && *a != ' ' && *a != '\t' && buf < e) *buf++ = *a++; *buf = '\0'; while(*a && (*a == ' ' || *a == '\t')) a++; return a; } /* * if tk is a subwindow or a descendent, return the subwindow; * return nil otherwise */ Tk* tkfindsub(Tk *tk) { for(; tk != nil; tk = tk->master){ if(tk->parent != nil) return tk; /* tk->parent is canvas or text */ } return nil; } /* * Return absolute screen position of tk (just outside its top-left border). * When a widget is embedded in a text or canvas widget, we need to * use the text or canvas's relpos() function instead of act{x,y}, and we * need to folow up the parent pointer rather than the master one. */ Point tkposn(Tk *tk) { Tk *f, *last; Point g; last = tk; if(tk->parent != nil) { g = tkmethod[tk->parent->type]->relpos(tk); f = tk->parent; } else { g.x = tk->act.x; g.y = tk->act.y; f = tk->master; } while(f != nil) { g.x += f->borderwidth; g.y += f->borderwidth; last = f; if(f->parent != nil) { g = addpt(g, tkmethod[f->parent->type]->relpos(f)); f = f->parent; } else { g.x += f->act.x; g.y += f->act.y; f = f->master; } } if (last->flag & Tkwindow) g = addpt(g, TKobj(TkWin, last)->req); return g; } /* * convert screen coords to local widget coords */ Point tkscrn2local(Tk *tk, Point p) { p = subpt(p, tkposn(tk)); p.x -= tk->borderwidth; p.y -= tk->borderwidth; return p; } int tkvisiblerect(Tk *tk, Rectangle *rr) { Rectangle r; Point g; Tk *f, *last; g = Pt(tk->borderwidth, tk->borderwidth); last = tk; if(tk->parent != nil) { g = addpt(g, tkmethod[tk->parent->type]->relpos(tk)); f = tk->parent; } else { g.x += tk->act.x; g.y += tk->act.y; f = tk->master; } if (f == nil) { *rr = tkrect(tk, 1); return 1; } r = rectaddpt(tkrect(tk, 1), g); while (f) { if (!rectclip(&r, tkrect(f, 0))) return 0; g.x = f->borderwidth; g.y = f->borderwidth; last = f; if (f->parent != nil) { g = addpt(g, tkmethod[f->parent->type]->relpos(f)); f = f->parent; } else { g.x += f->act.x; g.y += f->act.y; f = f->master; } r = rectaddpt(r, g); } if (last->flag & Tkwindow) r = rectaddpt(r, TKobj(TkWin, last)->act); /* * now we have the visible rectangle in screen coords; * subtract actx+borderwidth and we've got it back in * widget-local coords again */ r = rectsubpt(r, tkposn(tk)); *rr = rectsubpt(r, Pt(tk->borderwidth, tk->borderwidth)); return 1; } Point tkanchorpoint(Rectangle r, Point size, int anchor) { int dx, dy; Point p; p = r.min; dx = Dx(r) - size.x; dy = Dy(r) - size.y; if((anchor & (Tknorth|Tksouth)) == 0) p.y += dy/2; else if(anchor & Tksouth) p.y += dy; if((anchor & (Tkeast|Tkwest)) == 0) p.x += dx/2; else if(anchor & Tkeast) p.x += dx; return p; } static char* tkunits(char c, int *d, TkEnv *e) { switch(c) { default: if(c >= '0' || c <= '9' || c == '.') break; return TkBadvl; case '\0': break; case 'c': /* Centimeters */ *d *= (Tkdpi*100)/254; break; case 'm': /* Millimeters */ *d *= (Tkdpi*10)/254; break; case 'i': /* Inches */ *d *= Tkdpi; break; case 'p': /* Points */ *d = (*d*Tkdpi)/72; break; case 'w': /* Character width */ if(e == nil) return TkBadvl; *d = *d * e->wzero; break; case 'h': /* Character height */ if(e == nil) return TkBadvl; *d = *d * e->font->height; break; } return nil; } int TKF2I(int f) { if (f >= 0) return (f + Tkfpscalar/2) / Tkfpscalar; return (f - Tkfpscalar/2) / Tkfpscalar; } /* * Parse a floating point number into a decimal fixed point representation */ char* tkfrac(char **arg, int *f, TkEnv *env) { int c, minus, i, fscale, seendigit; char *p, *e; seendigit = 0; p = *arg; p = tkskip(p, " \t"); minus = 0; if(*p == '-') { minus = 1; p++; } i = 0; while(*p) { c = *p; if(c == '.') break; if(c < '0' || c > '9') break; i = i*10 + (c - '0'); seendigit = 1; p++; } i *= Tkfpscalar; if(*p == '.') p++; fscale = Tkfpscalar; while(*p && *p >= '0' && *p <= '9') { fscale /= 10; i += fscale * (*p++ - '0'); seendigit = 1; } if(minus) i = -i; if(!seendigit) return TkBadvl; e = tkunits(*p, &i, env); if (e != nil) return e; while (*p && *p != ' ' && *p != '\t') p++; *arg = p; *f = i; return nil; } char* tkfracword(TkTop *t, char **arg, int *f, TkEnv *env) { char *p; char buf[Tkminitem]; *arg = tkword(t, *arg, buf, buf+sizeof(buf), nil); p = buf; return tkfrac(&p, f, env); } char* tkfprint(char *v, int frac) { int fscale; if(frac < 0) { *v++ = '-'; frac = -frac; } v += sprint(v, "%d", frac/Tkfpscalar); frac = frac%Tkfpscalar; if(frac != 0) *v++ = '.'; fscale = Tkfpscalar/10; while(frac) { *v++ = '0' + frac/fscale; frac %= fscale; fscale /= 10; } *v = '\0'; return v; } char* tkvalue(char **val, char *fmt, ...) { va_list arg; Fmt fmtx; if(val == nil) return nil; fmtstrinit(&fmtx); if(*val != nil) if(fmtprint(&fmtx, "%s", *val) < 0) return TkNomem; va_start(arg, fmt); fmtvprint(&fmtx, fmt, arg); va_end(arg); free(*val); *val = fmtstrflush(&fmtx); if(*val == nil) return TkNomem; return nil; } static char* tkwidgetcmd(TkTop *t, Tk *tk, char *arg, char **val) { TkMethod *cm; TkCmdtab *ct; int bot, top, new, r; char *e, *buf; buf = mallocz(Tkmaxitem, 0); if(buf == nil) return TkNomem; arg = tkword(t, arg, buf, buf+Tkmaxitem, nil); if(val != nil) *val = nil; cm = tkmethod[tk->type]; e = TkBadcm; bot = 0; top = cm->ncmd - 1; while(bot <= top) { new = (bot + top)/2; ct = &cm->cmd[new]; r = strcmp(ct->name, buf); if(r == 0) { e = ct->fn(tk, arg, val); break; } if(r < 0) bot = new + 1; else top = new - 1; } free(buf); tkdirty(tk); return e; } Rectangle tkrect(Tk *tk, int withborder) { Rectangle r; int bd; bd = withborder? tk->borderwidth: 0; r.min.x = -bd; r.min.y = -bd; r.max.x = tk->act.width + bd; r.max.y = tk->act.height + bd; return r; } void tkdirty(Tk *tk) { Tk *sub; Point rel; Rectangle dirty; int isdirty, transparent; /* * mark as dirty all views underneath a dirty transparent widget * down to the first opaque widget. * inform parents about any dirtiness. * XXX as Tksubsub never gets reset, testing against Tksubsub doesn't *exactly* test * whether we're in a canvas/text widget, but merely * whether it has ever been. Tksubsub should probably be reset on unpack. */ isdirty = Dx(tk->dirty) > 0; transparent = tk->flag & Tktransparent; sub = tk; while (isdirty && ((tk->flag&Tksubsub) || transparent)) { if (tk->master != nil) { if (transparent) { rel.x = tk->act.x + tk->borderwidth; rel.y = tk->act.y + tk->borderwidth; dirty = rectaddpt(sub->dirty, rel); sub = tk->master; combinerect(&sub->dirty, dirty); transparent = sub->flag & Tktransparent; } tk = tk->master; } else if (tk->parent != nil) { tkmethod[tk->parent->type]->dirtychild(sub); tk = sub = tk->parent; isdirty = Dx(sub->dirty) > 0; transparent = sub->flag & Tktransparent; } else break; } } static int qcmdcmp(const void *a, const void *b) { return strcmp(((TkCmdtab*)a)->name, ((TkCmdtab*)b)->name); } void tksorttable(void) { int i; TkMethod *c; TkCmdtab *cmd; for(i = 0; i < TKwidgets; i++) { c = tkmethod[i]; if(c->cmd == nil) continue; for(cmd = c->cmd; cmd->name != nil; cmd++) ; c->ncmd = cmd - c->cmd; qsort(c->cmd, c->ncmd, sizeof(TkCmdtab), qcmdcmp); } } static char* tksinglecmd(TkTop *t, char *arg, char **val) { Tk *tk; int bot, top, new; char *e, *buf; if(t->debug) print("tk: '%s'\n", arg); buf = mallocz(Tkmaxitem, 0); if(buf == nil) return TkNomem; arg = tkword(t, arg, buf, buf+Tkmaxitem, nil); switch(buf[0]) { case '\0': free(buf); return nil; case '.': tk = tklook(t, buf, 0); if(tk == nil){ tkerr(t, buf); free(buf); return TkBadwp; } e = tkwidgetcmd(t, tk, arg, val); free(buf); return e; } bot = 0; top = nelem(cmdmain) - 1; e = TkBadcm; while(bot <= top) { int rc; new = (bot + top)/2; rc = strcmp(cmdmain[new].name, buf); if(!rc) { e = cmdmain[new].fn(t, arg, val); break; } if(rc < 0) bot = new + 1; else top = new - 1; } free(buf); return e; } static char* tkmatch(int inc, int dec, char *p) { int depth, esc, c; esc = 0; depth = 1; while(*p) { c = *p; if(esc == 0) { if(c == inc) depth++; if(c == dec) depth--; if(depth == 0) return p; } if(c == '\\' && esc == 0) esc = 1; else esc = 0; p++; } return nil; } char* tkexec(TkTop *t, char *arg, char **val) { int cmdsz, n; char *p, *cmd, *e, *c; if(t->execdepth >= 0 && ++t->execdepth > 128) return TkDepth; cmd = nil; cmdsz = 0; p = arg; for(;;) { switch(*p++) { case '[': p = tkmatch('[', ']', p); if(p == nil){ free(cmd); return TkSyntx; } break; case '{': p = tkmatch('{', '}', p); if(p == nil){ free(cmd); return TkSyntx; } break; case ';': n = p - arg - 1; if(cmdsz < n) cmdsz = n; c = realloc(cmd, cmdsz+1); if(c == nil){ free(cmd); return TkNomem; } cmd = c; memmove(cmd, arg, n); cmd[n] = '\0'; e = tksinglecmd(t, cmd, nil); if(e != nil) { t->err = e; strncpy(t->errcmd, cmd, sizeof(t->errcmd)); t->errcmd[sizeof(t->errcmd)-1] = '\0'; free(cmd); return e; } arg = p; break; case '\0': case '\'': free(cmd); e = tksinglecmd(t, arg, val); if(e != nil) { t->err = e; strncpy(t->errcmd, arg, sizeof(t->errcmd)); t->errcmd[sizeof(t->errcmd)-1] = '\0'; } return e; } } } static struct { char *name; int mask; } events[] = { "Button1P", TkButton1P, "Button1R", TkButton1R, "Button2P", TkButton2P, "Button2R", TkButton2R, "Button3P", TkButton3P, "Button3R", TkButton3R, "Button4P", TkButton4P, "Button4R", TkButton4R, "Button5P", TkButton5P, "Button5R", TkButton5R, "Button6P", TkButton6P, "Button6R", TkButton6R, "Extn1", TkExtn1, "Extn2", TkExtn2, "Takefocus", TkTakefocus, "Destroy", TkDestroy, "Enter", TkEnter, "Leave", TkLeave, "Motion", TkMotion, "Map", TkMap, "Unmap", TkUnmap, "Key", TkKey, "Focusin", TkFocusin, "Focusout", TkFocusout, "Configure", TkConfigure, "Double", TkDouble, 0 }; int tkeventfmt(Fmt *f) { int k, i, d; int e; e = va_arg(f->args, int); if ((f->flags & FmtSharp) && e == TkMotion) return 0; fmtprint(f, "<"); k = -1; if (e & TkKey) { k = e & 0xffff; e &= ~0xffff; } d = 0; for (i = 0; events[i].name; i++) { if (e & events[i].mask) { if (d++) fmtprint(f, "|"); fmtprint(f, "%s", events[i].name); } } if (k != -1) { fmtprint(f, "[%c]", k); } else if (e == 0) fmtprint(f, "Noevent"); fmtprint(f, ">"); return 0; } void tkerr(TkTop *t, char *e) { if(t != nil && e != nil){ strncpy(t->errx, e, sizeof(t->errx)); t->errx[sizeof(t->errx)-1] = '\0'; } } char* tkerrstr(TkTop *t, char *e) { char *s = malloc(strlen(e)+1+strlen(t->errx)+1); if(s == nil) return nil; strcpy(s, e); if(*e == '!'){ strcat(s, " "); strcat(s, t->errx); } t->errx[0] = '\0'; return s; } char* tksetmgrab(TkTop *t, Tk *tk) { Tk *omgrab; TkCtxt *c; c = t->ctxt; if (tk == nil) { omgrab = c->mgrab; c->mgrab = nil; /* * don't enterleave if grab reset would cause no leave event */ if (!(omgrab != nil && (omgrab->flag & Tknograb) && c->entered != nil && (c->entered->flag & Tknograb))) tkenterleave(t); } else { if (c->focused && c->mfocus != nil && c->mfocus->env->top != tk->env->top) return "!grab already taken on another toplevel"; c->mgrab = tk; if (tk->flag & Tknograb) { if (c->focused) { c->focused = 0; c->mfocus = nil; } } else if (c->focused || c->mstate.b != 0) { c->focused = 1; c->mfocus = tk; } //print("setmgrab(%s) focus now %s\n", tkname(tk), tkname(c->mfocus)); tkenterleave(t); } return nil; } int tkinsidepoly(Point *poly, int np, int winding, Point p) { Point pi, pj; int i, j, hit; hit = 0; j = np - 1; for(i = 0; i < np; j = i++) { pi = poly[i]; pj = poly[j]; if((pi.y <= p.y && p.y < pj.y || pj.y <= p.y && p.y < pi.y) && p.x < (pj.x - pi.x) * (p.y - pi.y) / (pj.y - pi.y) + pi.x) { if(winding == 1 || pi.y > p.y) hit++; else hit--; } } return (hit & winding) != 0; } int tklinehit(Point *a, int np, int w, Point p) { Point *b; int z, nx, ny, nrm; while(np-- > 1) { b = a+1; nx = a->y - b->y; ny = b->x - a->x; nrm = (nx < 0? -nx : nx) + (ny < 0? -ny : ny); if(nrm) z = (p.x-b->x)*nx/nrm + (p.y-b->y)*ny/nrm; else z = (p.x-b->x) + (p.y-b->y); if(z < 0) z = -z; if(z < w) return 1; a++; } return 0; } int tkiswordchar(int c) { return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || c == '_' || c >= 0xA0; } int tkhaskeyfocus(Tk *tk) { if (tk == nil || tk->env->top->focused == 0) return 0; return tk == tk->env->top->ctxt->tkkeygrab; } static int rptactive(void *v) { int id = (int)v; if (id == rptid) return 1; return 0; } static int ckrpt(void *v, int interval) { int id = (int)v; if (id != rptid) return -1; if (interval < rptto) return 0; return 1; } static void dorpt(void *v) { int id = (int)v; if (id == rptid) { rptto = rptint; (*rptcb)(rptw, rptnote, 0); if (rptint <= 0) { rptid++; rptw = nil; } } } void tkcancelrepeat(Tk *tk) { if (tk == rptw) { rptid++; rptw = nil; } } void tkrepeat(Tk *tk, void (*callback)(Tk*, void*, int), void *note, int pause, int interval) { rptid++; if (tk != rptw && rptw != nil) /* existing callback being replaced- report to owner */ (*rptcb)(rptw, rptnote, 1); rptw = tk; if (tk == nil || callback == nil) return; rptnote = note; rptcb = callback; rptto = pause; rptint = interval; if (!autorpt) autorpt = rptproc("autorepeat", TkRptclick, (void*)rptid, rptactive, ckrpt, dorpt); else rptwakeup((void*)rptid, autorpt); } static int blinkactive(void *v) { USED(v); return blinkw != nil; } static int ckblink(void *v, int interval) { USED(v); USED(interval); if (blinkw == nil) return -1; if (blinkignore) { blinkignore = 0; return 0; } return 1; } static void doblink(void *v) { USED(v); if (blinkw == nil) return; blinkcb(blinkw, blinkon++ & 1); tkupdate(blinkw->env->top); } void tkblinkreset(Tk *tk) { if (blinkw == tk) { blinkignore = 1; blinkon = 0; } } void tkblink(Tk *tk, void (*callback)(Tk*, int)) { if (tk == nil || callback == nil) { blinkw = nil; return; } blinkw = tk; blinkcb = callback; if (!blinkrpt) blinkrpt = rptproc("blinker", TkBlinkinterval, nil, blinkactive, ckblink, doblink); else rptwakeup(nil, blinkrpt); } /* * debugging */ void tkdump(Tk *tk) { Tk *sl; if(tk == nil) return; if((uint)tk->type < TKwidgets) print("%s", tkmethod[tk->type]->name); else print("TYPE#%#ux", tk->type); if(tk->name == nil || (ulong)tk->name < 512) print(" NAME %p", tk->name); else print(" %s", tkname(tk)); print(" # tk %#p flag %#ux grid %#p", tk, tk->flag, tk->grid); if(tk->parent != nil) print(" parent [%#p %q]", tk->parent, tkname(tk->parent)); if(tk->master != nil) print(" master [%#p %q]", tk->master, tkname(tk->master)); if(tk->slave != nil){ print(" slaves"); for(sl = tk->slave; sl != nil; sl = sl->next) print(" [%#p %q]", sl, tkname(sl)); } print("\n"); if(tk->type != TKcanvas) return; tkcvsdump(tk); } void tktopdump(Tk *tk) { TkTop *top; Tk *sub; if(tk == nil || tk->env == nil){ print("# %#p no top\n", tk); return; } top = tk->env->top; print("# env %#p top %#p\n", tk->env, top); if(top != nil){ for(sub = top->root; sub != nil; sub = sub->siblings) tkdump(sub); } }