ui_playlist.c

来自「MP3 整个 SDK」· C语言 代码 · 共 187 行

/*
*******************************************************************************
*                ACTOS AP
*        ap common lib, directory control file
*
*        (c) Copyright, Actions Co,Ld.
*             All Right Reserved
*
*  $Id: ui_playlist.c,v 1.1.1.1 2006/05/22 03:23:59 selina Exp $
*******************************************************************************
*/
#pragma codeseg(COM_PLAYLIST)
#include "ap_common.h"

#include "filesys.h"
WORD   playlist_active,cur_grouplist;    //目录总数,文件总数和浏览项数,浏览活动项
extern BYTE    PlaylistClass;
extern BYTE    PlaylistClassTotal;
#pragma memory=dataseg(RCODE)
#pragma memory=default
void ShowPlaylist(BYTE top,BYTE bottom,BYTE Old_active,BYTE active,BYTE string_id);
void reinit_idm_buf_playlist(int top, int bottom, char *Namebuf, BYTE string_id, BOOL direct);
/********************************************************************************
* Description : select the directory.
*
* Arguments  :
*            location: get thedisk type
*            type : show file kind
*            string_id: language type
* Returns     :
*            other:    Successful
*            0:    Fail, detail information in fselError
* Notes       :  only select the valid directory
*
********************************************************************************/

int ui_playlist(file_location_t *location, BYTE type,BYTE string_id)
{
    char Strname[28];
    BYTE PriInv;
    char key;
    int top, bottom;
    if ( !fselSetLocation(location) )
    {
        //return RESULT_IGNORE;
    }
    if (PlaylistClassTotal == 0)
        return RESULT_IGNORE;

    memset(Strname, 0x00, 28);
    while(PlaylistClass)       //返回根目录
    {
     fselGetPrevGroup(Strname);
    }
   // fselGetNextGroup(Strname);
    top=0;
    bottom=4;
    playlist_active=0;
    cur_grouplist=0;
    if(PlaylistClassTotal<5)
       bottom=PlaylistClassTotal-1;
    FSELGetLocation(location);          //保存location
    reinit_idm_buf_playlist(top, bottom, Strname, string_id,TRUE);
    FSELSetLocation(location);
    ShowPlaylist(top,bottom,playlist_active,playlist_active,string_id);
    while(ap_get_message()!=0) {;}      //丢掉多余按键

    ap_message_init(NULL);
    while(1)
    {
        //handle msg
        key = ap_get_message();
        switch(key)
        {

        case AP_KEY_NEXT:
        case AP_KEY_NEXT | AP_KEY_HOLD:

          if(playlist_active<PlaylistClassTotal -1 )  //当前项小于总列表数
            {

             fselGetNextGroup(Strname);
             playlist_active++;
                 if(playlist_active/5==cur_grouplist)
                   {
                      ShowPlaylist(top,bottom,playlist_active-1,playlist_active,string_id);
                   }
                 else
                    {
                      cur_grouplist=cur_grouplist+1;
                      top=(playlist_active/5)*5; //顶的序号
                      bottom=top+4;                  //底的序号
                      if(bottom>(PlaylistClassTotal-1))
                        bottom=PlaylistClassTotal-1;
                      FSELGetLocation(location);
                      reinit_idm_buf_playlist(top, bottom, Strname, string_id,TRUE);       //换页要重新初始化IDM数据
                      FSELSetLocation(location);
                      ShowPlaylist(top,bottom,playlist_active,playlist_active,string_id);
                    }

             }
//          else
//           {
//             ShowPlaylist(top,bottom,playlist_active-1,playlist_active,string_id);
//           }
            while(ap_get_message() != 0);
            break;
        case AP_KEY_PREV:
        case AP_KEY_PREV | AP_KEY_HOLD :
           //if(PlaylistClass==1)            //第一个列表
           //  break;
           //fselGetPrevGroup(Strname);    //选择上一个列表
           if(playlist_active >0)
              {
                 fselGetPrevGroup(Strname);
                  playlist_active--;
                if(playlist_active/5==cur_grouplist)
                  {
                    ShowPlaylist(top,bottom,playlist_active+1,playlist_active,string_id);
                  }
                 else
                    {
                       cur_grouplist=cur_grouplist-1;
                       top=(playlist_active/5)*5; //顶的序号
                       bottom=top+4;          //底的序号
                     //   if(bottom>(PlaylistClassTotal-1)
                     //  bottom=lPlaylistClassTotal-1;
                       FSELGetLocation(location);
                       reinit_idm_buf_playlist(top, bottom, Strname, string_id,FALSE);       //换页要重新初始化IDM数据
                       FSELSetLocation(location);
                       ShowPlaylist(top,bottom,playlist_active,playlist_active,string_id);
                    }
                 }
        while(ap_get_message() != 0);
              break;

        case AP_KEY_PLAY | AP_KEY_UP:
            FSELSetLocation(location);
            return RESULT_IGNORE;
            break;

        case AP_KEY_MODE | AP_KEY_LONG:
            //if ( Strname[0] != '\\' )
            //{
                if (FSELGetLocation(location))
                    return RESULT_NULL;
                else
                    return RESULT_IGNORE;
            //}
            break;
        case AP_KEY_MODE | AP_KEY_UP:
            break;
        case AP_MSG_WAIT_TIMEOUT:

                if (FSELGetLocation(location))
                    return RESULT_NULL;
                else
                    return RESULT_IGNORE;
                break;
            //}
        case AP_MSG_SD_OUT:
            //如在游览SD卡，但SD卡又被拔出，就返回拔出信号
            if (location->disk == 'H')
            {
                return RESULT_SD_OUT;
            }
            break;

        case AP_MSG_SD_IN:
            break;

        default:
            key=ap_handle_hotkey(key);
            if(key == RESULT_REDRAW)
            {
              ShowPlaylist(top,bottom,playlist_active,playlist_active,string_id);
            }
            else if(key != 0)
            {
                FSELGetLocation(location);
                return key;
            }
        } //switch()
    }
}