Windows Mobile PPCMediaPlayer源码

// MainDlg.cpp : Implementation of CMediaLibraryDlg // // Copyright (c) Microsoft Corporation. All rights reserved. // #include "stdafx.h" #include "MediaLibraryDlg.h" #include "PopDlgs.h" ///////////////////////////////////////////////////////////////////////////// // CMediaLibraryDlg /*********************************************************************** * Constructor ***********************************************************************/ CMediaLibraryDlg::CMediaLibraryDlg(IWMPPlayer* pPlayer) { // Initialize member variables m_hTree = NULL; m_hList = NULL; m_hMetadata = NULL; m_hAllMusicNode = NULL; m_hAllVideoNode = NULL; m_hMyPlaylistsNode = NULL; m_hAutoPlaylistwNode = NULL; m_bIsShowingMedia = TRUE; m_spSavedPlaylist = NULL; m_iSelectedNode = TREE_PARENT; m_spPlayer = pPlayer; } /*********************************************************************** * Destructor ***********************************************************************/ CMediaLibraryDlg::~CMediaLibraryDlg() { } /*********************************************************************** * OnInitDialog * * Initialize member variables of handlers * Initialize WMP OCX ***********************************************************************/ LRESULT CMediaLibraryDlg::OnInitDialog(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled) { // Get handler of list and tree for later usage m_hTree = GetDlgItem(IDC_TREE); m_hList = GetDlgItem(IDC_LIST); m_hMetadata = GetDlgItem(IDC_METADATA); // get mediaCollection and playlistCollection objects for later use. m_spPlayer->get_mediaCollection(&m_spMC); m_spPlayer->get_playlistCollection(&m_spPC); // Use tree view to show media library ShowMainTree(); return 1; // Let the system set the focus } /*********************************************************************** * OnDestroy * Release WMP OCX ***********************************************************************/ LRESULT CMediaLibraryDlg::OnDestroy(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled) { // Release all WMP objects before exit m_spSavedPlaylist = NULL; m_spMC = NULL; m_spPC = NULL; m_spPlayer = NULL; return 0; } /*********************************************************************** * OnOK * User closes the dialog ***********************************************************************/ LRESULT CMediaLibraryDlg::OnOK(WORD wNotifyCode, WORD wID, HWND hWndCtl, BOOL& bHandled) { EndDialog(wID); return 0; } /*********************************************************************** * OnCancel * User closes the dialog ***********************************************************************/ LRESULT CMediaLibraryDlg::OnCancel(WORD wNotifyCode, WORD wID, HWND hWndCtl, BOOL& bHandled) { EndDialog(wID); return 0; } /*********************************************************************** * OnRemovePlaylist * Called when menu Playlist > Delete is chosen * It pops up a dialog using CDelPlaylistDlg ***********************************************************************/ LRESULT CMediaLibraryDlg::OnRemovePlaylist(WORD wNotifyCode, WORD wID, HWND hWndCtl, BOOL& bHandled) { CDelPlaylistDlg dlg(m_spPC); // When a user delete a playlist, it returns PLAYLIST // then we update the relative part of the tree view if(dlg.DoModal() == PLAYLIST) { ShowPlaylistsTree(); } return 0; } /*********************************************************************** * OnAddURL * Called when menu Media > Add is chosen * It pops up a dialog using CAddMediaDlg ***********************************************************************/ LRESULT CMediaLibraryDlg::OnAddURL(WORD wNotifyCode, WORD wID, HWND hWndCtl, BOOL& bHandled) { CAddMediaDlg dlg(m_spMC); // It returns different MEDIATYPE when user adds different type // of URL. If the added media is playlist (ASX and WPL) then it // returns PLAYLIST int iRetCode = dlg.DoModal(); switch(iRetCode) { case MUSIC: ShowAllMusicTree(); break; case VIDEO: ShowAllVideoTree(); break; case PLAYLIST: ShowPlaylistsTree(); } return 0; } /*********************************************************************** * OnRemoveMedia * Called when menu Media > Delete is chosen * It pops up a dialog using CDelMediaDlg ***********************************************************************/ LRESULT CMediaLibraryDlg::OnRemoveMedia(WORD wNotifyCode, WORD wID, HWND hWndCtl, BOOL& bHandled) { CDelMediaDlg dlg(m_spMC); // Return value shows what kind of media is deleted int iRetCode = dlg.DoModal(); if(iRetCode == MUSIC) { ShowAllMusicTree(); } else if(iRetCode == VIDEO) { ShowAllVideoTree(); } return 0; } /*********************************************************************** * ShowMainTree * Build the tree view of the media library ***********************************************************************/ void CMediaLibraryDlg::ShowMainTree() { // Now Playing node AddNode(_T("Now Playing"), TREE_NOWPLAYING); // All node AddNode(_T("All"), TREE_ALL); // All Music node m_hAllMusicNode = AddNode(_T("All Music"), TREE_MUSIC); ShowAllMusicTree(); // All Video node m_hAllVideoNode = AddNode(_T("All Video"), TREE_VIDEO); ShowAllVideoTree(); // Other Media node AddNode(_T("Other Media"), TREE_OTHER); // My Playlists and auto playlists nodes m_hMyPlaylistsNode = AddNode(_T("My Playlists"), TREE_MYPLAYLIST); m_hAutoPlaylistwNode = AddNode(_T("Auto Playlists"), TREE_AUTOPLAYLIST); ShowPlaylistsTree(); } /*********************************************************************** * AddNode * szName: string shown on the added node * iPara: param value for the added node * hParent: handler to the parent node * * It adds a node under hParent with given text and param ***********************************************************************/ HTREEITEM CMediaLibraryDlg::AddNode(TCHAR* szName, NODENAME iPara, HTREEITEM hParent) { TVINSERTSTRUCT tvins; tvins.item.mask = TVIF_TEXT | TVIF_PARAM; tvins.hParent = hParent; tvins.hInsertAfter = TVI_LAST; // add the node tvins.item.lParam = (LPARAM)iPara; tvins.item.pszText = szName; tvins.item.cchTextMax = _tcslen(szName); return TreeView_InsertItem(m_hTree, &tvins); } /*********************************************************************** * OnClickTree * * It is called when a user clicks on the tree ***********************************************************************/ LRESULT CMediaLibraryDlg::OnClickTree(int idCtrl, LPNMHDR pnmh, BOOL& bHandled) { HTREEITEM hCurItem = TreeView_GetSelection(m_hTree); //HTREEITEM hParentItem = TreeView_GetParent(m_hTree, hCurItem); // Retrieve the text and param of the selected node TCHAR szPlaylistName[MAX_BSTR_LONG + 1]; TVITEM tvi; tvi.mask = TVIF_HANDLE | TVIF_PARAM | TVIF_TEXT; tvi.hItem = hCurItem; tvi.pszText = szPlaylistName; tvi.cchTextMax = MAX_BSTR_LONG; BOOL bVal; bVal = TreeView_GetItem(m_hTree, &tvi); // We use param of the node to tell what kind of node it is m_iSelectedNode = (NODENAME)(tvi.lParam); switch(tvi.lParam) { case TREE_ALL: // All node ShowAllMedia(); break; case TREE_NOWPLAYING: // Now playing node ShowNowPlaying(); break; case TREE_MUSIC: // All music node ShowAllMusic(); break; case TREE_MUSIC_ARTIST: // Music > Arti