bf13408df2
use notefd in killprocs() insead of postnote() as the process might'v exited. the notefd stays valid even if the particular process it was originaly opend on exited. remove the Window.pid field as its not needed. dup() the notefd for interruptproc as the window might'v gone away and closed the notefd file descriptor, resulting in us writing to the wrong thing. use snprint() instead of sprint() for safety. fix bogus debug fprint(). add missing "visible" flushimage() after Reshaped winctl message got handled. i assumed wsetname()/nameimage() would be enough, it but does a invisible flush so softscreen doesnt get updated immidiately. do not make allocimage() failure in scrtemps() fatal. it wont draw the window properly, but it gives the user a chance to delete some windows to recover.
184 lines
3.2 KiB
C
184 lines
3.2 KiB
C
#include <u.h>
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#include <libc.h>
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#include <draw.h>
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#include <thread.h>
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#include <cursor.h>
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#include <mouse.h>
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#include <keyboard.h>
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#include <frame.h>
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#include <fcall.h>
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#include "dat.h"
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#include "fns.h"
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static Image *scrtmp;
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static
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Image*
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scrtemps(void)
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{
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int h;
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if(scrtmp == nil){
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h = BIG*Dy(screen->r);
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scrtmp = allocimage(display, Rect(0, 0, 32, h), screen->chan, 0, DNofill);
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}
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return scrtmp;
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}
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void
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freescrtemps(void)
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{
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if(scrtmp){
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freeimage(scrtmp);
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scrtmp = nil;
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}
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}
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static
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Rectangle
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scrpos(Rectangle r, uint p0, uint p1, uint tot)
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{
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Rectangle q;
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int h;
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q = r;
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h = q.max.y-q.min.y;
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if(tot == 0)
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return q;
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if(tot > 1024*1024){
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tot>>=10;
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p0>>=10;
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p1>>=10;
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}
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if(p0 > 0)
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q.min.y += h*p0/tot;
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if(p1 < tot)
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q.max.y -= h*(tot-p1)/tot;
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if(q.max.y < q.min.y+2){
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if(q.min.y+2 <= r.max.y)
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q.max.y = q.min.y+2;
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else
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q.min.y = q.max.y-2;
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}
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return q;
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}
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void
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wscrdraw(Window *w)
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{
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Rectangle r, r1, r2;
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Image *b;
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b = scrtemps();
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if(b == nil || w->i == nil)
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return;
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r = w->scrollr;
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r1 = r;
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r1.min.x = 0;
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r1.max.x = Dx(r);
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r2 = scrpos(r1, w->org, w->org+w->nchars, w->nr);
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if(!eqrect(r2, w->lastsr)){
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w->lastsr = r2;
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/* move r1, r2 to (0,0) to avoid clipping */
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r2 = rectsubpt(r2, r1.min);
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r1 = rectsubpt(r1, r1.min);
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draw(b, r1, w->cols[BORD], nil, ZP);
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draw(b, r2, w->cols[BACK], nil, ZP);
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r2.min.x = r2.max.x-1;
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draw(b, r2, w->cols[BORD], nil, ZP);
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draw(w->i, r, b, nil, Pt(0, r1.min.y));
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}
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}
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void
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wscrsleep(Window *w, uint dt)
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{
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Timer *timer;
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int y, b;
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static Alt alts[3];
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timer = timerstart(dt);
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y = w->mc.xy.y;
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b = w->mc.buttons;
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alts[0].c = timer->c;
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alts[0].v = nil;
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alts[0].op = CHANRCV;
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alts[1].c = w->mc.c;
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alts[1].v = &w->mc.Mouse;
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alts[1].op = CHANRCV;
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alts[2].op = CHANEND;
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for(;;)
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switch(alt(alts)){
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case 0:
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timerstop(timer);
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return;
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case 1:
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if(abs(w->mc.xy.y-y)>2 || w->mc.buttons!=b){
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timercancel(timer);
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return;
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}
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break;
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}
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}
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void
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wscroll(Window *w, int but)
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{
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uint p0, oldp0;
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Rectangle s;
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int x, y, my, h, first;
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s = insetrect(w->scrollr, 1);
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h = s.max.y-s.min.y;
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x = (s.min.x+s.max.x)/2;
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oldp0 = ~0;
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first = TRUE;
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do{
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flushimage(display, 1);
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if(w->mc.xy.x<s.min.x || s.max.x<=w->mc.xy.x){
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readmouse(&w->mc);
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}else{
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my = w->mc.xy.y;
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if(my < s.min.y)
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my = s.min.y;
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if(my >= s.max.y)
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my = s.max.y;
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if(!eqpt(w->mc.xy, Pt(x, my))){
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wmovemouse(w, Pt(x, my));
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readmouse(&w->mc); /* absorb event generated by moveto() */
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}
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if(but == 2){
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y = my;
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if(y > s.max.y-2)
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y = s.max.y-2;
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if(w->nr > 1024*1024)
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p0 = ((w->nr>>10)*(y-s.min.y)/h)<<10;
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else
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p0 = w->nr*(y-s.min.y)/h;
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if(oldp0 != p0)
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wsetorigin(w, p0, FALSE);
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oldp0 = p0;
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readmouse(&w->mc);
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continue;
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}
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if(but == 1)
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p0 = wbacknl(w, w->org, (my-s.min.y)/w->font->height);
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else
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p0 = w->org+frcharofpt(w, Pt(s.max.x, my));
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if(oldp0 != p0)
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wsetorigin(w, p0, TRUE);
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oldp0 = p0;
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/* debounce */
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if(first){
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flushimage(display, 1);
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sleep(200);
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nbrecv(w->mc.c, &w->mc.Mouse);
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first = FALSE;
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}
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wscrsleep(w, 100);
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}
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}while(w->mc.buttons & (1<<(but-1)));
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while(w->mc.buttons)
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readmouse(&w->mc);
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}
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