342 lines
6.7 KiB
C
342 lines
6.7 KiB
C
/*
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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
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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
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draw_heartbeat ()
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{
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static int timer = 0;
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if (heartbeat) {
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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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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
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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)
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return MENU_ERROR;
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fill_menu_info (menu, &info);
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while (!done) {
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// Keep the cursor off titles... (?)
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while (menu[info.selected].type == TYPE_TITL) {
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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)
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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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// 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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case 'D':
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done = 1;
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break;
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case 'B':
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if (info.selected > 0)
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info.selected--;
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while (menu[info.selected].type == TYPE_TITL) {
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if (info.selected > 0)
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info.selected--;
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else
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break;
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}
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break;
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case 'C':
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if (menu[info.selected + 1].text)
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info.selected++;
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break;
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case 'A':
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switch (menu[info.selected].type) {
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case TYPE_MENU:
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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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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:
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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
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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)
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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)
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top = 0;
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bottom = top + hgt;
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if (bottom > info->length)
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bottom = info->length;
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top = bottom - hgt;
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if (top < 0)
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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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if (i == info->selected)
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lcd.chr (2, y, '>');
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switch (menu[i].type) {
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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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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
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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
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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
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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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// 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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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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} else {
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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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// 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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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 || value < 0 || key == 'A' || 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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