#help_index "Menus"
#help_file "::/Doc/Menus"
CTask *MenuTask()
{
CTask *res=sys_focus_task;
while (res && !res->cur_menu)
res=res->parent_task;
return res;
}
CMenuEntry *sys_cur_submenu_entry=NULL;
public CMenuEntry *MenuSubEntryFind(
CMenuEntry *haystack_first,U8 *needle_entry_name)
{//You probably don't need this. Use dir / and MenuEntryFind().
while (haystack_first) {
if (!StrCmp(haystack_first->name,needle_entry_name))
return haystack_first;
haystack_first=haystack_first->next;
}
return NULL;
}
public CMenuEntry *MenuEntryFind(CMenu *haystack_menu,U8 *needle_full_name)
{//Find pulldown entry. Fs->cur_menu is probably the menu you want.
//Just 2 levels -- across top and down are valid, currently.
U8 *st,*st2;
CMenuEntry *tmpse;
if (!haystack_menu || !needle_full_name)
return NULL;
st=StrNew(needle_full_name);
st2=StrNew(needle_full_name);
tmpse=(&haystack_menu->sub)(U8 *)-offset(CMenuEntry.sub);
while (*st && tmpse) {
StrFirstRem(st,"/",st2);
tmpse=MenuSubEntryFind(tmpse->sub,st2);
}
Free(st);
Free(st2);
return tmpse;
}
CMenuEntry *MenuNewSub(CCmpCtrl *cc,CTask *task)
{
CMenuEntry *tmpme=NULL,*tmpse;
if (cc->token==TK_IDENT) {
tmpme=CAlloc(sizeof(CMenuEntry),task);
if (StrLen(cc->cur_str)>31)
cc->cur_str[31]=0;
StrCpy(tmpme->name,cc->cur_str);
if (Lex(cc)=='(') {
tmpme->msg_code=MSG_KEY_DOWN_UP;
if (Lex(cc)!=',' && cc->token!=')')
tmpme->msg_code=LexExpressionI64(cc);
if (cc->token==',')
Lex(cc);
if (cc->token!=',' && cc->token!=')')
tmpme->arg1=LexExpressionI64(cc);
if (cc->token==',')
Lex(cc);
if (cc->token!=',' && cc->token!=')')
tmpme->arg2=LexExpressionI64(cc);
if (cc->token!=')')
LexExcept(cc,"Missing ')' at ");
if (Lex(cc)!=';')
LexExcept(cc,"Missing ';' at");
Lex(cc); //Skip ;
} else if (cc->token=='{') {
Lex(cc); //Skip {
tmpme->dir=TRUE;
tmpse=&tmpme->sub;
while (tmpse && cc->token!='}')
tmpse=tmpse->next=MenuNewSub(cc,task);
if (cc->token!='}')
LexExcept(cc,"Missing '}' at ");
else
Lex(cc); //Skip }
} else
LexExcept(cc,"Expecting '{' at ");
}
return tmpme;
}
public CMenu *MenuNew(U8 *st,I64 flags=0,CTask *task=NULL)
{//Parse a menu. You probably don't need this.
CMenu *m;
CMenuEntry *tmpse;
CCmpCtrl *cc=CmpCtrlNew(st,CCF_DONT_FREE_BUF);
if (!task) task=Fs;
Lex(cc);
m=CAlloc(sizeof(CMenu),task);
m->task=task;
m->flags=flags;
m->attr =BLUE<<4+YELLOW;
tmpse=&m->sub;
while (tmpse)
tmpse=tmpse->next=MenuNewSub(cc,task);
CmpCtrlDel(cc);
return m;
}
public CMenu *MenuFile(U8 *filename,I64 flags=0,CTask *task=NULL)
{//Parse a pulldown menu file. You probably don't need this.
CMenu *m;
U8 *st=MStrPrint("#include \"%s\"",filename);
m=MenuNew(st,flags,task);
Free(st);
return m;
}
U0 MenuDelSub(CMenuEntry *tmpme)
{
CMenuEntry *tmpse,*tmpse1;
if (tmpme) {
tmpse=tmpme->sub;
while (tmpse) {
tmpse1=tmpse->next;
MenuDelSub(tmpse);
tmpse=tmpse1;
}
Free(tmpme);
}
}
public U0 MenuDel(CMenu *m)
{//Delete a manu. You probably don't need this.
CMenuEntry *tmpme,*tmpme1;
if (!m) return;
tmpme=m->sub;
while (tmpme) {
tmpme1=tmpme->next;
MenuDelSub(tmpme);
tmpme=tmpme1;
}
Free(m);
}
I64 MenuEntryWidth(CMenuEntry *tmpme)
{
I64 res=StrLen(tmpme->name);
CMenuEntry *tmpse=tmpme->sub;
while (tmpse) {
res=MaxI64(res,StrLen(tmpse->name));
tmpse=tmpse->next;
}
return res+1;
}
public CMenu *MenuPush(U8 *st)
{//Save old pulldown menu and replace with new from str.
CMenu *m=MenuNew(st);
m->next=Fs->cur_menu;
Fs->cur_menu=m;
return m;
}
public CMenu *MenuFilePush(U8 *filename)
{//Save old pulldown menu and replace with new from file.
CMenu *m=MenuFile(filename);
m->next=Fs->cur_menu;
Fs->cur_menu=m;
return m;
}
public U0 MenuPop()
{//Restore old pulldown menu. Delete just-deactivated menu.
CMenu *m=Fs->cur_menu;
if (!m) return;
Fs->cur_menu=m->next;
MenuDel(m);
}
U0 DrawMenu(CDC *dc)
{
CMenu *m;
CMenuEntry *tmpme,*tmpse,*cur_submenu=NULL;
U8 *st=NULL;
CTask *task=MenuTask;
I64 i,w,x0,y0,x1=ms.pos.x,y1=ms.pos.y;
if (!TaskValidate(task) || !(m=task->cur_menu)) {
sys_cur_submenu_entry=NULL;
return;
}
dc->color=m->attr>>4;
GrRect(dc,0,0,GR_WIDTH,FONT_HEIGHT);
x0=0;
tmpme=m->sub;
while (tmpme) {
w=MenuEntryWidth(tmpme)*FONT_WIDTH;
if (x0<=x1<x0+w) {
if (0<=y1<FONT_HEIGHT) {
dc->color=m->attr&15;
GrRect(dc,x0,0,w,FONT_HEIGHT);
dc->color=m->attr>>4;
} else
dc->color=m->attr&15;
GrPrint(dc,x0,0,"%s",tmpme->name);
y0=FONT_HEIGHT;
tmpse=tmpme->sub;
while (tmpse) {
if (tmpse->checked)
i=m->attr^0xFF;
else
i=m->attr;
if (y0<=y1<y0+FONT_HEIGHT) {
if (tmpse->msg_code==MSG_KEY_DOWN||
tmpse->msg_code==MSG_KEY_DOWN_UP) {
if (!tmpse->arg2)
tmpse->arg2=Char2ScanCode(tmpse->arg1);
st=ScanCode2KeyName(tmpse->arg2);
}
sys_cur_submenu_entry=cur_submenu=tmpse;
dc->color=i&15;
GrRect(dc,x0,y0,w,FONT_HEIGHT);
dc->color=i>>4;
GrPrint(dc,x0,y0,"%s",tmpse->name);
if (st) {
dc->color=i>>4;
GrRect(dc,x0+w,y0-FONT_HEIGHT,
(StrLen(st)+1)*FONT_WIDTH,FONT_HEIGHT*3);
dc->color=i&15;
GrPrint(dc,x0+w,y0,"%s",st);
Free(st);
}
} else {
dc->color=i>>4;
GrRect(dc,x0,y0,w,FONT_HEIGHT);
dc->color=i&15;
GrPrint(dc,x0,y0,"%s",tmpse->name);
}
y0+=FONT_HEIGHT;
tmpse=tmpse->next;
}
} else {
dc->color=m->attr&15;
GrPrint(dc,x0,0,"%s",tmpme->name);
}
x0+=w;
tmpme=tmpme->next;
}
sys_cur_submenu_entry=cur_submenu;
}