ref: 02c6058f5d529e41afb0208c69f0cbf694b02b18
dir: /sys/src/cmd/mothra/libpanel/popup.c/
/* * popup * looks like a group, except diverts hits on certain buttons to * panels that it temporarily pops up. */ #include <u.h> #include <libc.h> #include <draw.h> #include <event.h> #include <panel.h> #include "pldefs.h" typedef struct Popup Popup; struct Popup{ Image *save; /* where to save what the popup covers */ Panel *pop[3]; /* what to pop up */ }; void pl_drawpopup(Panel *p){ USED(p); } int pl_hitpopup(Panel *g, Mouse *m){ Panel *p; Point d; Popup *pp; pp=g->data; if(g->state==UP){ switch(m->buttons&7){ case 0: p=g->child; break; case 1: p=pp->pop[0]; g->state=DOWN1; break; case 2: p=pp->pop[1]; g->state=DOWN2; break; case 4: p=pp->pop[2]; g->state=DOWN3; break; default: p=0; break; } if(p==0){ p=g->child; g->state=DOWN; } else if(g->state!=UP){ plpack(p, screen->clipr); if(p->lastmouse) d=subpt(m->xy, divpt(addpt(p->lastmouse->r.min, p->lastmouse->r.max), 2)); else d=subpt(m->xy, divpt(addpt(p->r.min, p->r.max), 2)); if(p->r.min.x+d.x<g->r.min.x) d.x=g->r.min.x-p->r.min.x; if(p->r.max.x+d.x>g->r.max.x) d.x=g->r.max.x-p->r.max.x; if(p->r.min.y+d.y<g->r.min.y) d.y=g->r.min.y-p->r.min.y; if(p->r.max.y+d.y>g->r.max.y) d.y=g->r.max.y-p->r.max.y; plmove(p, d); pp->save=allocimage(display, p->r, g->b->chan, 0, DNofill); if(pp->save!=0) draw(pp->save, p->r, g->b, 0, p->r.min); pl_invis(p, 0); pldraw(p, g->b); } } else{ switch(g->state){ default: SET(p); break; /* can't happen! */ case DOWN1: p=pp->pop[0]; break; case DOWN2: p=pp->pop[1]; break; case DOWN3: p=pp->pop[2]; break; case DOWN: p=g->child; break; } if((m->buttons&7)==0){ if(g->state!=DOWN){ if(pp->save!=0){ draw(g->b, p->r, pp->save, 0, p->r.min); freeimage(pp->save); pp->save=0; } pl_invis(p, 1); } g->state=UP; } } plmouse(p, m); if((m->buttons&7)==0) g->state=UP; return (m->buttons&7)!=0; } void pl_typepopup(Panel *g, Rune c){ USED(g, c); } Point pl_getsizepopup(Panel *g, Point children){ USED(g); return children; } void pl_childspacepopup(Panel *g, Point *ul, Point *size){ USED(g, ul, size); } int pl_pripopup(Panel *, Point){ return PRI_POPUP; } void plinitpopup(Panel *v, int flags, Panel *pop0, Panel *pop1, Panel *pop2){ Popup *pp; pp=v->data; v->flags=flags; v->pri=pl_pripopup; v->state=UP; v->draw=pl_drawpopup; v->hit=pl_hitpopup; v->type=pl_typepopup; v->getsize=pl_getsizepopup; v->childspace=pl_childspacepopup; pp->pop[0]=pop0; pp->pop[1]=pop1; pp->pop[2]=pop2; pp->save=0; v->kind="popup"; } Panel *plpopup(Panel *parent, int flags, Panel *pop0, Panel *pop1, Panel *pop2){ Panel *v; v=pl_newpanel(parent, sizeof(Popup)); plinitpopup(v, flags, pop0, pop1, pop2); return v; }