Initial revision
This commit is contained in:
William Ferrell
+355
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/*
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menu.c
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Handles server-supplied menus defined by a table. Read menu.h for
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more information.
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Menus are similar to "pull-down" menus, but have some extra features.
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They can contain "normal" menu items, checkboxes, sliders, "movers",
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etc..
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I should probably find a more elegant way of doing this in order
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to handle dynamically-changing menus such as the client list. Tcl/Tk
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has neat ways to do it. Hmm...
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "parse.h"
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#include "sock.h"
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#include "render.h"
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#include "main.h"
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#include "drivers/lcd.h"
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#include "menu.h"
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// FIXME: Implement this where it is supposed to be...
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#include <time.h>
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void framedelay()
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{
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sock_poll_clients();
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parse_all_client_messages();
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usleep(TIME_UNIT);
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}
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static void draw_heartbeat()
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{
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static int timer = 0;
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if(heartbeat)
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{
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// Set this to pulsate like a real heart beat...
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// (binary is fun... :)
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lcd.icon(!((timer+4)&5), 0);
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lcd.chr(lcd.wid, 1, 0);
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}
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lcd.flush();
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timer++;
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timer &= 0x0f;
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}
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static int PAD = 255;
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typedef struct menu_info
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{
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int selected;
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int length;
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} menu_info;
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static int draw_menu(Menu menu, menu_info *info);
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static int fill_menu_info(Menu menu, menu_info *info);
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static int menu_handle_action(menu_item *item);
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static int slid_func(menu_item *item);
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int do_menu(Menu menu)
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{
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menu_info info;
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int key=0;
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int status=MENU_OK;
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int done=0;
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int (*func)();
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int (*readfunc)(int);
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if(!menu) return MENU_ERROR;
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fill_menu_info(menu, &info);
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while(!done)
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{
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// Keep the cursor off titles... (?)
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while(menu[info.selected].type == TYPE_TITL)
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{
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info.selected++;
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// If the title is the last thing in the menu...
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if(!menu[info.selected].text) info.selected -= 2;
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}
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draw_menu(menu, &info);
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// FIXME: This should use a better keypress interface, which
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// FIXME: handles things according to keybindings...
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for(key = lcd.getkey(); key==0; key = lcd.getkey())
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{
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// sleep for 1/8th second...
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framedelay();
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// do the heartbeat...
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draw_heartbeat();
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// Check for client input...
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}
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// Handle the key according to the keybindings...
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switch(key)
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{
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case 'D': done=1; break;
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case 'B': if(info.selected > 0) info.selected--;
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while(menu[info.selected].type == TYPE_TITL)
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{
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if(info.selected > 0)
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info.selected--;
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else break;
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}
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break;
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case 'C': if(menu[info.selected+1].text) info.selected++; break;
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case 'A':
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switch(menu[info.selected].type)
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{
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case TYPE_MENU: status = do_menu(menu[info.selected].data);
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break;
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case TYPE_FUNC:
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func = menu[info.selected].data;
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if(func)
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status = func();
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break;
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case TYPE_CHEK:
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readfunc = menu[info.selected].data;
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if(readfunc)
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status = readfunc(MENU_CHECK);
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status &= 0xffff0000;
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break;
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case TYPE_SLID:
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func = menu[info.selected].data;
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if(func)
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status = slid_func(&menu[info.selected]);
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break;
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default:
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break;
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}
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switch(status)
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{
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case MENU_OK:
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break;
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case MENU_CLOSE:
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return MENU_OK;
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case MENU_QUIT:
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return MENU_QUIT;
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// case MENU_KILL:
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// return MENU_KILL;
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case MENU_ERROR:
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return MENU_ERROR;
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}
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// status = menu_handle_action(&menu[info.selected]);
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// TODO: It should now do special stuff for "mover" widgets,
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// TODO: and handle the return code appropriately.
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break;
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default: break;
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}
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}
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return status;
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}
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static int draw_menu(Menu menu, menu_info *info)
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{
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int i;
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int x=1, y=1;
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int top=0, bottom=0;
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int (*readfunc)(int);
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// these should maybe be removed:
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int wid=lcd.wid, hgt=lcd.hgt;
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if(!menu) return MENU_ERROR;
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lcd.clear();
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// Scroll down until the selected item is centered, if possible...
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top = info->selected - (hgt/2);
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if(top<0) top=0;
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bottom = top+hgt;
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if(bottom > info->length) bottom=info->length;
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top = bottom-hgt;
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if(top<0) top=0;
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// Draw all visible items...
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for(i=top; i<bottom; i++, y++)
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{
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if(i == info->selected) lcd.chr(2,y,'>');
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switch(menu[i].type)
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{
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case TYPE_TITL:
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lcd.chr(1,y,PAD);
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lcd.chr(2,y,PAD);
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lcd.string(4,y,menu[i].text);
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for(x=strlen(menu[i].text)+5; x <= wid; x++)
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lcd.chr(x,y,PAD);
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break;
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case TYPE_MENU:
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lcd.string(3,y,menu[i].text);
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lcd.chr(wid,y,'>');
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break;
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case TYPE_FUNC:
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lcd.string(3,y,menu[i].text);
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break;
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case TYPE_CHEK:
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if(menu[i].data)
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{
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readfunc = menu[i].data;
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if(readfunc(MENU_READ))
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lcd.chr(wid,y,'Y');
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else
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lcd.chr(wid,y,'N');
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}
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lcd.string(3,y,menu[i].text);
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break;
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case TYPE_SLID:
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lcd.string(3,y,menu[i].text);
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break;
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case TYPE_MOVE:
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break;
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default:
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break;
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}
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}
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if(top != 0)
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lcd.chr(1,1,'^');
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if(bottom < info->length)
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lcd.chr(1,hgt,'v');
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draw_heartbeat();
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//lcd.flush();
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return 0;
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}
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static int fill_menu_info(Menu menu, menu_info *info)
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{
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int i;
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info->selected = 0;
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// count the entries in the menu
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for(i=0; menu[i].text; i++);
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info->length = i;
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return 0;
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}
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static int menu_handle_action(menu_item *item)
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{
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return MENU_OK;
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}
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static int slid_func(menu_item *item)
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{
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char str[16];
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int key = 0;
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int value = 0;
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int x, y=1;
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int (*readfunc)(int);
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readfunc = item->data;
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lcd.init_hbar();
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while(key != 'A' && key != 'D')
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{
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// Draw the title...
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lcd.clear();
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lcd.chr(1,y,PAD);
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lcd.chr(2,y,PAD);
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lcd.string(4,y,item->text);
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for(x=strlen(item->text)+5; x <= lcd.wid; x++)
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lcd.chr(x,y,PAD);
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// Draw the slider now...
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value = readfunc(MENU_READ);
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if(value < 0 || value >= MENU_CLOSE)
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return value;
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sprintf(str, "%i", value);
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if(lcd.hgt >= 4)
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{
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lcd.string(8, 4, str);
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value = (lcd.wid * lcd.cellwid * value / 256);
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lcd.hbar(1, 3, value);
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}
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else
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{
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lcd.string(17, 2, str);
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value = ((lcd.wid-4) * lcd.cellwid * value / 256);
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lcd.hbar(1, 2, value);
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}
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//lcd.flush();
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for(key = lcd.getkey(); key==0; key = lcd.getkey())
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{
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// do the heartbeat...
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draw_heartbeat();
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// sleep for 1/8th second...
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framedelay();
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// Check for client input...
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}
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switch(key)
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{
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case 'B':
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value = readfunc(MENU_MINUS);
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break;
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case 'C':
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value = readfunc(MENU_PLUS);
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break;
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}
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if(value >= MENU_CLOSE
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|| value < 0
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|| key == 'A'
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|| key == 'D')
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return value;
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}
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return MENU_OK;
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}
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