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mothra: subscript and superscript support

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This commit is contained in:
cinap_lenrek 2015-09-03 19:07:48 +02:00
parent c8dd01d5f6
commit 72a5fbd8ea
6 changed files with 51 additions and 24 deletions
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3
sys/src/cmd/mothra/html.h
View file

@ -29,6 +29,7 @@ struct Stack{
int pre; /* in preformatted text? */
int font; /* typeface */
int size; /* point size of text */
int sub; /* < 0 superscript, > 0 subscript */
int margin; /* left margin position */
int indent; /* extra indent at paragraph start */
int number; /* paragraph number */
@ -195,6 +196,8 @@ enum{
Tag_strike,
Tag_strong,
Tag_style,
Tag_sub,
Tag_sup,
Tag_source,
Tag_table, /* rm 3.8.00 */
Tag_td,

2
sys/src/cmd/mothra/html.syntax.c
View file

@ -73,6 +73,8 @@ Tag tag[]={
[Tag_strike] "strike", END,
[Tag_strong] "strong", END,
[Tag_style] "style", END,
[Tag_sub] "sub", END,
[Tag_sup] "sup", END,
[Tag_source] "source", NOEND,
[Tag_table] "table", END,
[Tag_td] "td", END,

7
sys/src/cmd/mothra/libpanel/panel.h
View file

@ -13,6 +13,7 @@ struct Rtext{
void *user; /* user data */
int space; /* how much space before, if no break */
int indent; /* how much space before, after a break */
int voff; /* vertical offset (for subscripts and superscripts) */
Image *b; /* what to display, if nonzero */
Panel *p; /* what to display, if nonzero and b==0 */
Font *font; /* font in which to draw text */
@ -173,9 +174,9 @@ void plinittextview(Panel *, int, Point, Rtext *, void (*)(Panel *, int, Rtext *
/*
* Rtext constructors & destructor
*/
Rtext *plrtstr(Rtext **, int, int, Font *, char *, int, void *);
Rtext *plrtbitmap(Rtext **, int, int, Image *, int, void *);
Rtext *plrtpanel(Rtext **, int, int, Panel *, void *);
Rtext *plrtstr(Rtext **, int, int, int, Font *, char *, int, void *);
Rtext *plrtbitmap(Rtext **, int, int, int, Image *, int, void *);
Rtext *plrtpanel(Rtext **, int, int, int, Panel *, void *);
void plrtfree(Rtext *);
void plrtseltext(Rtext *, Rtext *, Rtext *);
char *plrtsnarftext(Rtext *);

18
sys/src/cmd/mothra/libpanel/rtext.c
View file

@ -13,13 +13,14 @@
#define LEAD 4 /* extra space between lines */
#define BORD 2 /* extra border for images */
Rtext *pl_rtnew(Rtext **t, int space, int indent, Image *b, Panel *p, Font *f, char *s, int flags, void *user){
Rtext *pl_rtnew(Rtext **t, int space, int indent, int voff, Image *b, Panel *p, Font *f, char *s, int flags, void *user){
Rtext *new;
new=pl_emalloc(sizeof(Rtext));
new->flags=flags;
new->user=user;
new->space=space;
new->indent=indent;
new->voff=voff;
new->b=b;
new->p=p;
new->font=f;
@ -34,14 +35,14 @@ Rtext *pl_rtnew(Rtext **t, int space, int indent, Image *b, Panel *p, Font *f, c
(*t)->last=new;
return new;
}
Rtext *plrtpanel(Rtext **t, int space, int indent, Panel *p, void *user){
return pl_rtnew(t, space, indent, 0, p, 0, 0, 1, user);
Rtext *plrtpanel(Rtext **t, int space, int indent, int voff, Panel *p, void *user){
return pl_rtnew(t, space, indent, voff, 0, p, 0, 0, 1, user);
}
Rtext *plrtstr(Rtext **t, int space, int indent, Font *f, char *s, int flags, void *user){
return pl_rtnew(t, space, indent, 0, 0, f, s, flags, user);
Rtext *plrtstr(Rtext **t, int space, int indent, int voff, Font *f, char *s, int flags, void *user){
return pl_rtnew(t, space, indent, voff, 0, 0, f, s, flags, user);
}
Rtext *plrtbitmap(Rtext **t, int space, int indent, Image *b, int flags, void *user){
return pl_rtnew(t, space, indent, b, 0, 0, 0, flags, user);
Rtext *plrtbitmap(Rtext **t, int space, int indent, int voff, Image *b, int flags, void *user){
return pl_rtnew(t, space, indent, voff, b, 0, 0, 0, flags, user);
}
void plrtfree(Rtext *t){
Rtext *next;
@ -102,6 +103,7 @@ Point pl_rtfmt(Rtext *t, int wid){
d=tp->font->height-a;
w=tp->wid=stringwidth(tp->font, tp->text);
}
a-=tp->voff,d+=tp->voff;
if(x+w+space>wid) break;
if(a>ascent) ascent=a;
if(d>descent) descent=d;
@ -128,6 +130,7 @@ Point pl_rtfmt(Rtext *t, int wid){
for(;;){
t->topy=topy;
t->r.min.x=p.x;
p.y+=t->voff;
if(t->b){
t->r.max.y=p.y+BORD;
t->r.min.y=p.y-(t->b->r.max.y-t->b->r.min.y)-BORD;
@ -143,6 +146,7 @@ Point pl_rtfmt(Rtext *t, int wid){
t->r.max.y=t->r.min.y+t->font->height;
p.x+=t->wid;
}
p.y-=t->voff;
t->r.max.x=p.x;
t->nextline=eline;
t=t->next;

2
sys/src/cmd/mothra/mothra.c
View file

@ -1124,7 +1124,7 @@ mothon(Www *w, int on)
t->next = nil;
ap=emalloc(sizeof(Action));
ap->link = strdup(a->link);
plrtstr(&t->next, 0, 0, t->font, strdup("->"), PL_HOT, ap);
plrtstr(&t->next, 0, 0, 0, t->font, strdup("->"), PL_HOT, ap);
t->next->next = x;
} else {
if(x) {

43
sys/src/cmd/mothra/rdhtml.c
View file

@ -33,7 +33,8 @@ struct Fontdata{
"terminus/unicode.16", 0, 0,
"terminus/unicode.18", 0, 0,
};
Fontdata *pl_whichfont(int f, int s){
Font *pl_whichfont(int f, int s, int *space){
char name[NNAME];
assert(f >= 0 && f < 4);
@ -45,14 +46,16 @@ Fontdata *pl_whichfont(int f, int s){
if(fontlist[f][s].font==0) fontlist[f][s].font=font;
fontlist[f][s].space=stringwidth(fontlist[f][s].font, "0");
}
return &fontlist[f][s];
if(space)
*space = fontlist[f][s].space;
return fontlist[f][s].font;
}
void getfonts(void){
int f, s;
for(f=0;f!=4;f++)
for(s=0;s!=4;s++)
pl_whichfont(f, s);
pl_whichfont(f, s, nil);
}
void pl_pushstate(Hglob *g, int t){
++g->state;
@ -80,7 +83,7 @@ void pl_popstate(Stack *state){
}
void pl_linespace(Hglob *g){
plrtbitmap(&g->dst->text, 1000000, 0, linespace, 0, 0);
plrtbitmap(&g->dst->text, 1000000, 0, 0, linespace, 0, 0);
g->para=0;
g->linebrk=0;
}
@ -93,15 +96,15 @@ int strtolength(Hglob *g, int dir, char *str){
if(cistrstr(str, "%"))
return 0;
if(cistrstr(str, "em")){
p=stringsize(pl_whichfont(g->state->font, g->state->size)->font, "M");
p=stringsize(pl_whichfont(g->state->font, g->state->size, nil), "M");
return floor(f*((dir==HORIZ) ? p.x : p.y));
}
return floor(f);
}
void pl_htmloutput(Hglob *g, int nsp, char *s, Field *field){
Fontdata *f;
int space, indent, flags;
Font *f;
int space, indent, flags, voff;
Action *ap;
if(g->state->tag==Tag_title
/* || g->state->tag==Tag_textarea */
@ -115,8 +118,13 @@ void pl_htmloutput(Hglob *g, int nsp, char *s, Field *field){
}
return;
}
f=pl_whichfont(g->state->font, g->state->size);
space=f->space;
voff = 0;
f=pl_whichfont(g->state->font, g->state->size, &space);
if(g->state->sub){
voff = g->state->sub * f->ascent / 2;
g->state->size = SMALL;
f=pl_whichfont(g->state->font, g->state->size, &space);
}
indent=g->state->margin;
if(g->para){
space=1000000;
@ -160,7 +168,7 @@ void pl_htmloutput(Hglob *g, int nsp, char *s, Field *field){
flags |= PL_HOT;
if(g->state->strike)
flags |= PL_STR;
plrtstr(&g->dst->text, space, indent, f->font, strdup(s), flags, ap);
plrtstr(&g->dst->text, space, indent, voff, f, strdup(s), flags, ap);
g->para=0;
g->linebrk=0;
g->dst->changed=1;
@ -636,6 +644,7 @@ void plaintext(Hglob *g){
int c;
g->state->font=CWIDTH;
g->state->size=NORMAL;
g->state->sub = 0;
elp=&line[NLINE-UTFmax-1];
lp=line;
for(;;){
@ -665,6 +674,7 @@ void plrdplain(char *name, int fd, Www *dst){
g.state->tag=Tag_html;
g.state->font=CWIDTH;
g.state->size=NORMAL;
g.state->sub=0;
g.state->pre=0;
g.state->image=0;
g.state->link=0;
@ -701,6 +711,7 @@ void plrdhtml(char *name, int fd, Www *dst){
g.state->tag=Tag_html;
g.state->font=ROMAN;
g.state->size=NORMAL;
g.state->sub=0;
g.state->pre=0;
g.state->image=0;
g.state->link=0;
@ -914,6 +925,12 @@ void plrdhtml(char *name, int fd, Www *dst){
case Tag_del:
g.state->strike=1;
break;
case Tag_sub:
g.state->sub++;
break;
case Tag_sup:
g.state->sub--;
break;
case Tag_blockquot:
g.spacc=0;
g.linebrk=1;
@ -1026,7 +1043,7 @@ void plrdhtml(char *name, int fd, Www *dst){
break;
case Tag_hr:
g.spacc=0;
plrtbitmap(&g.dst->text, 1000000, g.state->margin, hrule, 0, 0);
plrtbitmap(&g.dst->text, 1000000, g.state->margin, 0, hrule, 0, 0);
break;
case Tag_key:
htmlerror(g.name, g.lineno, "<key> deprecated");
@ -1063,7 +1080,7 @@ void plrdhtml(char *name, int fd, Www *dst){
g.linebrk=0;
g.spacc=-1;
plrtbitmap(&g.dst->text, 100000,
g.state->margin+g.state->indent, bullet, 0, 0);
g.state->margin+g.state->indent, 0, bullet, 0, 0);
break;
}
break;