ref: c471b6bf820684b415d206b50ac09e80c14352ac
dir: /index.c/
#include <u.h>
#include <libc.h>
#include <draw.h>
#include <mouse.h>
#include <keyboard.h>
#include <thread.h>
#include "theme.h"
#include "a.h"
enum
{
Padding = 4,
Scrollwidth = 12,
Scrollgap = 2,
Scrollminh = 5,
Collapsedlines = 10,
};
enum
{
BACK,
TEXT,
HIGH,
SCRL,
NCOLS,
};
enum
{
Mreply,
Mreplyall,
Mforward,
Mdelete,
};
char *menustr[] =
{
"reply",
"reply all",
"forward",
"delete",
nil
};
Menu menu =
{
menustr
};
Channel *showc;
Channel *selc;
Mailbox *mbox;
static Image *cols[NCOLS];
static Rectangle viewr;
static Rectangle listr;
static Rectangle scrollr;
static int nlines;
static int offset;
static int sel;
static int lineh;
void
indexresetsel(void)
{
sel = 0;
offset = 0;
}
void
indexswitch(Mailbox *mb)
{
indexresetsel();
mbox = mb;
}
void
ensureselvisible(void)
{
int n;
if(sel > offset && sel < offset + nlines)
return;
offset = nlines*(sel/nlines);
n = mbox->list->nelts;
if(offset + n%nlines >= n)
offset = n - n%nlines;
}
Message*
messageat(int index)
{
index = mbox->count - index - 1;
return mbox->list->elts[index];
}
Rectangle
messagerect(int index)
{
Point p, q;
int n;
n = index - offset;
p = addpt(listr.min, Pt(Padding, n*lineh + Padding));
q = Pt(listr.max.x, p.y + lineh);
return Rpt(p, q);
}
void
drawmessage(int index, int selected)
{
const Rune *ellipsis = L"…";
Message *m;
Image *fg, *bg;
char *s, buf[9], n, r;
Tm t;
Rune rn;
int i, w;
Rectangle lr;
Point p, pe;
lr = messagerect(index);
bg = selected ? cols[HIGH] : cols[BACK];
fg = cols[TEXT];
draw(screen, rectsubpt(lr, Pt(0, Padding/2)), bg, nil, ZP);
m = messageat(index);
n = m->flags&Fseen?' ':'N';
r = m->flags&Fanswered ? 'R':' ';
snprint(buf, sizeof buf, "[%c%c] ", n, r);
p = lr.min;
p = string(screen, p, fg, ZP, font, buf);
tmtime(&t, m->time, nil);
snprint(buf, sizeof buf, "%τ", tmfmt(&t, "DD/MM/YY"));
p = string(screen, p, fg, ZP, font, buf);
p = string(screen, p, fg, ZP, font, " ");
s = m->sender;
pe = addpt(p, Pt(20*stringwidth(font, " "), 0));
for(i = 0; i < 20; i++){
if(*s == '@')
s = "";
if(*s && i == 19){
p = runestringn(screen, p, fg, ZP, font, ellipsis, 1);
break;
}else if(*s){
s += chartorune(&rn, s);
p = runestringn(screen, p, fg, ZP, font, &rn, 1);
}else
p = stringn(screen, p, fg, ZP, font, " ", 1);
}
p = string(screen, pe, fg, ZP, font, " ");
s = m->subject;
while(s && *s){
s += chartorune(&rn, s);
w = runestringnwidth(font, &rn, 1);
if(p.x + w + 2*Padding > viewr.max.x){
runestringn(screen, p, fg, ZP, font, ellipsis, 1);
break;
}
p = runestringn(screen, p, fg, ZP, font, &rn, 1);
}
}
void
indexdraw(void)
{
Rectangle scrposr;
int i, h, y;
draw(screen, viewr, cols[BACK], nil, ZP);
draw(screen, scrollr, cols[SCRL], nil, ZP);
h = ((double)nlines/mbox->count) * Dy(scrollr);
y = ((double)offset/mbox->count) * Dy(scrollr);
if(h < Scrollminh)
h = Scrollminh;
scrposr = Rpt(addpt(scrollr.min, Pt(0,y)), addpt(scrollr.min, Pt(Dx(scrollr)-1, y+h)));
draw(screen, scrposr, cols[BACK], nil, ZP);
for(i = offset; i < offset + nlines; i++){
if(i >= mbox->list->nelts)
break;
drawmessage(i, i == sel);
}
}
void
indexdrawsync(void)
{
indexdraw();
flushimage(display, 1);
}
Rectangle
indexresize(Rectangle r, int collapsed)
{
lineh = font->height + Padding;
viewr = r;
if(collapsed)
viewr.max.y = viewr.min.y + Collapsedlines * lineh + Padding;
scrollr = viewr;
scrollr.max.x = scrollr.min.x + Scrollwidth + Scrollgap;
scrollr = insetrect(scrollr, 1);
listr = viewr;
listr.min.x += Scrollwidth + Scrollgap;
listr.max.x -= Padding;
nlines = Dy(viewr) / lineh;
ensureselvisible();
return viewr;
}
void
indexinit(Channel *c0, Channel *c1, Theme *theme)
{
Rectangle r;
sel = 0;
offset = 0;
showc = c0;
selc = c1;
if(theme != nil){
cols[BACK] = theme->back;
cols[TEXT] = theme->text;
cols[HIGH] = theme->border;
cols[SCRL] = theme->border;
}else{
r = Rect(0, 0, 1, 1);
cols[BACK] = display->white;
cols[TEXT] = display->black;
cols[HIGH] = allocimage(display, r, screen->chan, 1, 0xCCCCCCFF);
cols[SCRL] = allocimage(display, r, screen->chan, 1, 0x999999FF);
/*
cols[BACK] = allocimage(display, r, screen->chan, 1, 0x282828FF);
cols[TEXT] = allocimage(display, r, screen->chan, 1, 0xA89984FF);
cols[HIGH] = allocimage(display, r, screen->chan, 1, 0x3C3836FF);
cols[SCRL] = allocimage(display, r, screen->chan, 1, 0x504945FF);
*/
}
}
void
scroll(int Δ)
{
int nelts;
nelts = mbox->list->nelts;
if(nelts <= nlines)
return;
if(Δ < 0 && offset == 0)
return;
if(Δ > 0 && offset + nlines >= nelts)
return;
offset += Δ;
if(offset < 0)
offset = 0;
if(offset + nelts%nlines >= nelts)
offset = nelts - nelts%nlines;
indexdrawsync();
}
void
select(int newsel, Channel *c)
{
if(newsel < 0)
newsel = 0;
if(newsel >= mbox->count)
newsel = mbox->count - 1;
if(newsel == sel)
return;
if(newsel < offset || newsel >= offset + nlines){
sel = newsel;
ensureselvisible();
indexdraw();
}else{
drawmessage(sel, 0);
drawmessage(newsel, 1);
sel = newsel;
}
flushimage(display, 1);
sendp(c, messageat(sel));
}
static
int
indexat(Point p)
{
return offset + (p.y-listr.min.y)/lineh;
}
void
indexmouse(Mouse m)
{
int n;
if(!ptinrect(m.xy, viewr))
return;
if(ptinrect(m.xy, listr)){
if(m.buttons & 1){
select(indexat(m.xy), selc);
}else if(m.buttons & 2){
/* TODO: menu */
}else if(m.buttons & 4){
select(indexat(m.xy), showc);
}else if(m.buttons & 8){
n = mousescrollsize(nlines);
scroll(-n);
}else if(m.buttons & 16){
n = mousescrollsize(nlines);
scroll(n);
}
}else if(ptinrect(m.xy, scrollr)){
if(m.buttons & 1){
n = (m.xy.y - scrollr.min.y) / lineh;
scroll(-n);
}else if(m.buttons & 2){
offset = (m.xy.y - scrollr.min.y) * mbox->list->nelts / Dy(scrollr);
indexdrawsync();
}else if(m.buttons & 4){
n = (m.xy.y - scrollr.min.y) / lineh;
scroll(n);
}
}
}
void
indexkey(Rune k)
{
switch(k){
case Kup:
select(sel - 1, selc);
break;
case Kdown:
select(sel + 1, selc);
break;
case Kpgup:
select(sel - nlines, selc);
break;
case Kpgdown:
select(sel + nlines, selc);
break;
case Khome:
select(0, selc);
break;
case Kend:
select(mbox->count - 1, selc);
break;
case '\n':
sendp(showc, messageat(sel));
break;
}
}