cpi_playlist_callbacks.c

《Visual C++视频/音频开发实用工程案例精选》一书的源代码

/*
 * CoolPlayer - Blazing fast audio player.
 * Copyright (C) 2000-2001 Niek Albers
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
////////////////////////////////////////////////////////////////////////////////



#include "stdafx.h"
#include "globals.h"
#include "CPI_PlaylistItem.h"
#include "CPI_Playlist.h"




////////////////////////////////////////////////////////////////////////////////
//
//
//
void CPL_cb_OnItemUpdated(const CP_HPLAYLISTITEM hItem)
{
    if(globals.m_hPlaylistViewControl)
    {
        const int iItemIDX = CPLI_GetCookie(hItem);
        if(iItemIDX != CPC_INVALIDITEM)
            CLV_SetItemData(globals.m_hPlaylistViewControl, iItemIDX, hItem);
    }
}
//
//
//
void CPL_cb_OnPlaylistAppend(const CP_HPLAYLISTITEM hItem)
{
    int iNewItemIDX;

    iNewItemIDX = CLV_AddItem(globals.m_hPlaylistViewControl, hItem);
    CPLI_SetCookie(hItem, iNewItemIDX);
}
//
//
//
void CPL_cb_OnPlaylistItemDelete(const CP_HPLAYLISTITEM hItem)
{
    CP_HPLAYLISTITEM hCursor;
    int iItemIDX = CPLI_GetCookie(hItem);

    // Remove the item from the list
    CLV_DeleteItem(globals.m_hPlaylistViewControl, iItemIDX);

    // We are storing the item number on the item cookie - we must now renumber all
    // list items after this item
    for(hCursor = CPLI_Next(hItem); hCursor; hCursor = CPLI_Next(hCursor), iItemIDX++)
        CPLI_SetCookie(hCursor, iItemIDX);
}
//
//
//
void CPL_cb_OnPlaylistEmpty()
{
    if(globals.m_hPlaylistViewControl)
        CLV_RemoveAllItems(globals.m_hPlaylistViewControl);
}
//
//
//
void CPL_cb_OnPlaylistActivationChange(const CP_HPLAYLISTITEM hItem, const BOOL bNewActiveState)
{
    if(bNewActiveState == TRUE)
    {
        main_update_title_text();
        main_draw_title(windows.wnd_main);
        main_draw_tracknr(windows.wnd_main);
    }
}
//
//
//
void CPL_cb_OnPlaylistActivationEmpty()
{
    main_update_title_text();
    main_draw_title(windows.wnd_main);
    main_draw_tracknr(windows.wnd_main);
}
//
//
//
void CPL_cb_SetWindowToReflectList()
{
    CP_HPLAYLISTITEM hCursor;
    CP_HPLAYLISTITEM hSelected;

    if(globals.m_hPlaylistViewControl)
        CLV_BeginBatch(globals.m_hPlaylistViewControl);

    // Unselect active item
    hSelected = CPL_GetActiveItem(globals.m_hPlaylist);

    // Add items to list
    CLV_RemoveAllItems(globals.m_hPlaylistViewControl);
    for(hCursor = CPL_GetFirstItem(globals.m_hPlaylist); hCursor; hCursor = CPLI_Next(hCursor))
        CPL_cb_OnPlaylistAppend(hCursor);

    // Set active item
    if(hSelected)
        CPL_cb_OnPlaylistActivationChange(hSelected, TRUE);

    if(globals.m_hPlaylistViewControl)
        CLV_EndBatch(globals.m_hPlaylistViewControl);
}
//
//
//
void CPL_cb_LockWindowUpdates(const BOOL bLock)
{
    if(globals.m_hPlaylistViewControl)
    {
        if(bLock)
            CLV_BeginBatch(globals.m_hPlaylistViewControl);
        else
            CLV_EndBatch(globals.m_hPlaylistViewControl);
    }
}
//
//
//
void CPL_cb_TrackStackChanged()
{
    if(globals.m_hPlaylistViewControl)
        CLV_Invalidate(globals.m_hPlaylistViewControl);
}
//
//
//