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- #include <u.h>
- #include <libc.h>
- #include <draw.h>
- #include <thread.h>
- #include <mouse.h>
- #include <frame.h>
- void
- _frredraw(Frame *f, Point pt)
- {
- Frbox *b;
- int nb;
- static int x;
- for(nb=0,b=f->box; nb<f->nbox; nb++, b++){
- _frcklinewrap(f, &pt, b);
- if(b->nrune >= 0){
- string(f->b, pt, f->cols[TEXT], ZP, f->font, (char *)b->ptr);
- }
- pt.x += b->wid;
- }
- }
- static int
- nbytes(char *s0, int nr)
- {
- char *s;
- Rune r;
- s = s0;
- while(--nr >= 0)
- s += chartorune(&r, s);
- return s-s0;
- }
- void
- frdrawsel(Frame *f, Point pt, ulong p0, ulong p1, int issel)
- {
- Image *back, *text;
- if(f->ticked)
- frtick(f, frptofchar(f, f->p0), 0);
- if(p0 == p1){
- frtick(f, pt, issel);
- return;
- }
- if(issel){
- back = f->cols[HIGH];
- text = f->cols[HTEXT];
- }else{
- back = f->cols[BACK];
- text = f->cols[TEXT];
- }
- frdrawsel0(f, pt, p0, p1, back, text);
- }
- void
- frdrawsel0(Frame *f, Point pt, ulong p0, ulong p1, Image *back, Image *text)
- {
- Frbox *b;
- int nb, nr, w, x, trim;
- Point qt;
- uint p;
- char *ptr;
- p = 0;
- b = f->box;
- trim = 0;
- for(nb=0; nb<f->nbox && p<p1; nb++){
- nr = b->nrune;
- if(nr < 0)
- nr = 1;
- if(p+nr <= p0)
- goto Continue;
- if(p >= p0){
- qt = pt;
- _frcklinewrap(f, &pt, b);
- if(pt.y > qt.y)
- draw(f->b, Rect(qt.x, qt.y, f->r.max.x, pt.y), back, nil, qt);
- }
- ptr = (char*)b->ptr;
- if(p < p0){ /* beginning of region: advance into box */
- ptr += nbytes(ptr, p0-p);
- nr -= (p0-p);
- p = p0;
- }
- trim = 0;
- if(p+nr > p1){ /* end of region: trim box */
- nr -= (p+nr)-p1;
- trim = 1;
- }
- if(b->nrune<0 || nr==b->nrune)
- w = b->wid;
- else
- w = stringnwidth(f->font, ptr, nr);
- x = pt.x+w;
- if(x > f->r.max.x)
- x = f->r.max.x;
- draw(f->b, Rect(pt.x, pt.y, x, pt.y+f->font->height), back, nil, pt);
- if(b->nrune >= 0)
- stringn(f->b, pt, text, ZP, f->font, ptr, nr);
- pt.x += w;
- Continue:
- b++;
- p += nr;
- }
- /* if this is end of last plain text box on wrapped line, fill to end of line */
- if(p1>p0 && b>f->box && b<f->box+f->nbox && b[-1].nrune>0 && !trim){
- qt = pt;
- _frcklinewrap(f, &pt, b);
- if(pt.y > qt.y)
- draw(f->b, Rect(qt.x, qt.y, f->r.max.x, pt.y), back, nil, qt);
- }
- }
- void
- frtick(Frame *f, Point pt, int ticked)
- {
- Rectangle r;
- if(f->ticked==ticked || f->tick==0 || !ptinrect(pt, f->r))
- return;
- pt.x--; /* looks best just left of where requested */
- r = Rect(pt.x, pt.y, pt.x+FRTICKW, pt.y+f->font->height);
- if(ticked){
- draw(f->tickback, f->tickback->r, f->b, nil, pt);
- draw(f->b, r, f->tick, nil, ZP);
- }else
- draw(f->b, r, f->tickback, nil, ZP);
- f->ticked = ticked;
- }
- Point
- _frdraw(Frame *f, Point pt)
- {
- Frbox *b;
- int nb, n;
- for(b=f->box,nb=0; nb<f->nbox; nb++, b++){
- _frcklinewrap0(f, &pt, b);
- if(pt.y == f->r.max.y){
- f->nchars -= _frstrlen(f, nb);
- _frdelbox(f, nb, f->nbox-1);
- break;
- }
- if(b->nrune > 0){
- n = _frcanfit(f, pt, b);
- if(n == 0)
- drawerror(f->display, "_frcanfit==0");
- if(n != b->nrune){
- _frsplitbox(f, nb, n);
- b = &f->box[nb];
- }
- pt.x += b->wid;
- }else{
- if(b->bc == '\n'){
- pt.x = f->r.min.x;
- pt.y+=f->font->height;
- }else
- pt.x += _frnewwid(f, pt, b);
- }
- }
- return pt;
- }
- int
- _frstrlen(Frame *f, int nb)
- {
- int n;
- for(n=0; nb<f->nbox; nb++)
- n += NRUNE(&f->box[nb]);
- return n;
- }
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