menu.c

这是一个相当棒的Linux下的台球游戏

#include "menu.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <GL/gl.h>
#include "options.h"
#include "sys_stuff.h"


menuType * menu_new( void (* callback)( int, void * ) )
{
    menuType * menu;

    DPRINTF("menu_new:\n");

    menu = malloc(sizeof(menuType));
    menu->nr           = 0;
    menu->select_id    = -1;
    menu->p_select_id  = &(menu->select_id);
    menu->select_index = 0;
    menu->textedit_mode = 0;
    menu->callback     = callback;
    menu->parent       = (menuType *)0;
    return menu;
}


void menu_add_submenu( menuType * menu, char * text, menuType * submenu, int show_subsetting )
{
    DPRINTF("menu_add_submenu:\n");
    if(menu->nr<MAX_MENU_ENTRY_NUM){
        menu->entry[menu->nr].type     = ENTRY_TYPE_SUBMENU;
        strcpy( menu->entry[menu->nr].text, text);
        menu->entry[menu->nr].settingtext[0] = 0;
        menu->entry[menu->nr].submenu  = submenu;
        menu->entry[menu->nr].text_obj = (textObj *)0;
//    menu->entry[menu->nr].settingtext_obj = (textObj *)0;
        menu->entry[menu->nr].fontname = options_menu_fontname;
        menu->entry[menu->nr].fontsize = 32;
        menu->entry[menu->nr].show_subsetting = show_subsetting;
        menu->entry[menu->nr].arg      = (void *) 0;
        if(submenu!=(menuType *)0){
            submenu->callback     = menu->callback;
            submenu->p_select_id  = menu->p_select_id;
            submenu->parent       = menu;
            submenu->parent_entry = &(menu->entry[menu->nr]);
        }
        menu->nr++;
    } else {
        printf("menu_add_submenu: too many menu entries - ignoring this entry\n");
    }
}


void menu_add_entry( menuType * menu, char * text, int id )
{
    DPRINTF("menu_add_entry:\n");
    if(menu->nr<MAX_MENU_ENTRY_NUM){
        menu->entry[menu->nr].type     = ENTRY_TYPE_ID;
        strcpy( menu->entry[menu->nr].text, text );
        menu->entry[menu->nr].settingtext[0] = 0;
        menu->entry[menu->nr].id       = id;
        menu->entry[menu->nr].text_obj = (textObj *)0;
//    menu->entry[menu->nr].settingtext_obj = (textObj *)0;
        menu->entry[menu->nr].fontname = options_menu_fontname;
        menu->entry[menu->nr].fontsize = 32;
        menu->entry[menu->nr].arg      = (void *) 0;
        menu->nr++;
    } else {
        printf("menu_add_entry: too many menu entries - ignoring this entry\n");
    }
}


void menu_add_arg_entry( menuType * menu, char * text, int id, void * arg )
{
    DPRINTF("menu_add_arg_entry:\n");
    if(menu->nr<MAX_MENU_ENTRY_NUM){
        menu->entry[menu->nr].type     = ENTRY_TYPE_ID;
        strcpy( menu->entry[menu->nr].text, text );
        menu->entry[menu->nr].settingtext[0] = 0;
        menu->entry[menu->nr].id       = id;
        menu->entry[menu->nr].text_obj = (textObj *)0;
        //    menu->entry[menu->nr].settingtext_obj = (textObj *)0;
        menu->entry[menu->nr].fontname = options_menu_fontname;
        menu->entry[menu->nr].fontsize = 32;
        menu->entry[menu->nr].arg      = arg;
        menu->nr++;
    } else {
        printf("menu_add_arg_entry: too many menu entries - ignoring this entry\n");
    }
}


void menu_add_textfield( menuType * menu, char * text, int id, int fixedlen )
{
    DPRINTF("menu_add_arg_entry:\n");
    if(menu->nr<MAX_MENU_ENTRY_NUM){
        menu->entry[menu->nr].type     = ENTRY_TYPE_TEXTFIELD;
        strcpy( menu->entry[menu->nr].text, text );
        menu->entry[menu->nr].settingtext[0] = 0;
        menu->entry[menu->nr].id       = id;
        menu->entry[menu->nr].text_obj = (textObj *)0;
        //    menu->entry[menu->nr].settingtext_obj = (textObj *)0;
        menu->entry[menu->nr].fontname = options_menu_fontname;
        menu->entry[menu->nr].fontsize = 32;
        menu->entry[menu->nr].arg      = (void *)0;
        menu->entry[menu->nr].fixedlen = fixedlen;
        menu->nr++;
    } else {
        printf("menu_add_textfield: too many menu entries - ignoring this entry\n");
    }
}


void menu_add_exit( menuType * menu, char * text )
{
    DPRINTF("menu_add_exit:\n");
    if(menu->nr<MAX_MENU_ENTRY_NUM){
        menu->entry[menu->nr].type     = ENTRY_TYPE_EXIT;
        strcpy( menu->entry[menu->nr].text, text );
        menu->entry[menu->nr].settingtext[0] = 0;
        menu->entry[menu->nr].text_obj = (textObj *)0;
//    menu->entry[menu->nr].settingtext_obj = (textObj *)0;
        menu->entry[menu->nr].fontname = options_menu_fontname;
        menu->entry[menu->nr].fontsize = 32;
        menu->entry[menu->nr].arg      = (void *) 0;
        menu->nr++;
    } else {
        printf("menu_add_exit: too many menu entries - ignoring this entry\n");
    }
}


void menu_entry_set_text( menuEntry * entry, char * text )
{
    char str[256];
    strcpy( entry->text, text );
    if( entry->text_obj != (textObj *)0 ){
        if( entry->show_subsetting && entry->settingtext[0]!=0 ){
            sprintf(str,"%s : %s",entry->text,entry->settingtext);
            textObj_setText( entry->text_obj, str );
//            textObj_setText( entry->text_obj, text );
        } else {
            textObj_setText( entry->text_obj, text );
        }
    }
}


void menu_entry_set_settingtext( menuEntry * entry, char * text )
{
    char str[256];
    strcpy( entry->settingtext, text );
    if( entry->text_obj != (textObj *)0 ){
        if( entry->show_subsetting && entry->settingtext[0]!=0 ){
            sprintf(str,"%s : %s",entry->text,entry->settingtext);
            textObj_setText( entry->text_obj, str );
/*            sprintf(str," : %s",entry->settingtext);
            if( entry->settingtext_obj != (textObj *)0 ){
                textObj_setText( entry->settingtext_obj, str );
            } else {
                entry->settingtext_obj=textObj_new( str, entry->fontname, entry->fontsize );
            }*/
        } else {
            textObj_setText( entry->text_obj, text );
        }
    }
}


static void menu_create_textobj( menuEntry * entry )
{
    char str[256];
    if( entry->text_obj == (textObj *)0 ){
        if( entry->show_subsetting && entry->settingtext[0]!=0 ){
            sprintf(str,"%s : %s",entry->text,entry->settingtext);
            entry->text_obj = textObj_new( str, entry->fontname, entry->fontsize );
/*            entry->text_obj = textObj_new( entry->text, entry->fontname, entry->fontsize );
            sprintf(str," : %s",entry->settingtext);
            entry->settingtext_obj = textObj_new( str, entry->fontname, entry->fontsize );*/
        } else {
            entry->text_obj = textObj_new( entry->text, entry->fontname, entry->fontsize );
        }
//        textObj_toggle3D(entry->text_obj);
    }
}

void menu_select_by_coord( menuType * menu, int x, int y )
/* selects the menupoint under the pos x,y */
{
    int i,x1,y1,x2,y2, all_height;

    if(!menu->textedit_mode){
        all_height=0;
        for(i=0;i<menu->nr;i++){
            all_height+=menu->entry[i].fontsize;
        }

        for(i=0;i<menu->nr;i++){
            //        fprintf( stderr, "menu->entry[i].text_obj = %d\n", menu->entry[i].text_obj );
            if( menu->entry[i].text_obj == (textObj *)0 ){
                menu_create_textobj( &(menu->entry[i]) );
            }
            x1 = -menu->entry[i].text_obj->quad_w/2;
            y1 = all_height/2-i*menu->entry[i].fontsize-menu->entry[i].text_obj->quad_h/2;
            x2 = +menu->entry[i].text_obj->quad_w/2;
            y2 = all_height/2-i*menu->entry[i].fontsize+menu->entry[i].text_obj->quad_h/2;
            if( x<=x2 && x>=x1 && y<=y2 && y>=y1 ){
                menu->select_index=i;
                *(menu->p_select_id)=menu->entry[i].id;
            }
        }
    }
}


void menu_select_next( menuType * menu )
/* selects the next menupoint in the current submenu */