gtkmusicbrowser.cpp

一个简单漂亮的C++编写的mp3播放器

    FileSelector *filesel = new FileSelector("Add a Track");
    filesel->SetExtended();
    if (filesel->Run()) {
        char *returnpath = filesel->GetReturnPath();
        char *ext = p->GetContext()->player->GetExtension(returnpath);
        uint32 length = strlen(returnpath) + 10;
        char *tempurl = new char[length];
        if (IsntError(FilePathToURL(returnpath, tempurl, &length))) {
            if (p->GetContext()->plm->IsSupportedPlaylistFormat(ext)) {
                string tobeloaded = tempurl;
                p->LoadPlaylist(tobeloaded);
            }
            else {
                char *filereturn = strdup_new(filesel->GetReturnPath());
                if (filereturn) {
                    char *temp;
                    char *first= strtok(filereturn, "\n");

                    while ((temp = strtok(NULL, "\n"))) {
                        p->AddTrackPlaylistEvent(temp);
                        p->m_currentindex++;
                    }
                    p->AddTrackPlaylistEvent(first);
                }
                delete [] filereturn;
            }
       }
       delete [] tempurl;
    }
    delete filesel;
}

static void move_up_tool(GtkWidget *widget, GTKMusicBrowser *p)
{
    p->MoveUpEvent();
    p->SetClickState(kContextPlaylist);
}

static void move_down_tool(GtkWidget *widget, GTKMusicBrowser *p)
{
    p->MoveDownEvent();
    p->SetClickState(kContextPlaylist);
}

static void playlist_row_move_internal(GtkWidget *widget, int source, int dest, 
                                       GTKMusicBrowser *p)
{
    p->MoveItemEvent(source, dest);
    p->SetClickState(kContextPlaylist);
}

static void set_current_index_internal(GtkWidget *widget, int row, int column, 
                                       GdkEventButton *button, 
                                       GTKMusicBrowser *p)
{
    p->m_currentindex = row;
    if (button && button->type == GDK_2BUTTON_PRESS)
        p->PlayEvent();
    p->SetClickState(kContextPlaylist);
}

static void quit_menu(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    p->ToggleVisEvent();
}

static void sort_artist(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    p->SortPlaylistEvent(kPlaylistSortKey_Artist, kPlaylistSortType_Ascending);
}

static void sort_album(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    p->SortPlaylistEvent(kPlaylistSortKey_Album, kPlaylistSortType_Ascending);
}

static void sort_title(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    p->SortPlaylistEvent(kPlaylistSortKey_Title, kPlaylistSortType_Ascending);

}

static void sort_year(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    p->SortPlaylistEvent(kPlaylistSortKey_Year, kPlaylistSortType_Ascending);
}

static void sort_track(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    p->SortPlaylistEvent(kPlaylistSortKey_Track, kPlaylistSortType_Ascending);
}

static void sort_genre(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    p->SortPlaylistEvent(kPlaylistSortKey_Genre, kPlaylistSortType_Ascending);
}

static void sort_time(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    p->SortPlaylistEvent(kPlaylistSortKey_Time, kPlaylistSortType_Ascending);
}

static void sort_location(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    p->SortPlaylistEvent(kPlaylistSortKey_Location, kPlaylistSortType_Ascending);
}

static void sort_normal(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    p->iSetShuffleMode = true;
    p->SortPlaylistEvent(kPlaylistSortKey_Random, kPlaylistSortType_Descending);
}

static void sort_random2(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    p->iSetShuffleMode = true;
    p->SortPlaylistEvent(kPlaylistSortKey_Random, kPlaylistSortType_Ascending);
}

static void sort_random(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    p->SortPlaylistEvent(kPlaylistSortKey_Random, kPlaylistSortType_Ascending);
}

static void catalog_tog(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    p->ExpandCollapseEvent();
}

static void infoedit(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    edit_tool(w, p);
}

static void new_plist(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    p->SaveCurrentPlaylist();

    p->CreateNewEditor(NULL);
}

static void new_plist_tool(GtkWidget *w, GTKMusicBrowser *p)
{
    new_plist(p, 1, w);  
} 

static void open_list(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    p->SaveCurrentPlaylist();

    FileSelector *filesel = new FileSelector("Open a Playlist from Disk");
    if (filesel->Run())
        p->CreateNewEditor(filesel->GetReturnPath());
    delete filesel;
}

static void saveas_list(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    GTKMessageDialog oBox;
    string oMessage = string("What do you want to call this playlist?");

    if (oBox.Show(oMessage.c_str(), "Save This List to Disk?", kMessageOkCancel,
                  true, true)
                  == kMessageReturnOk) {

        char *temp = oBox.GetEntryText();
        if (!temp)
            return;

        for (unsigned int i = 0; i < strlen(temp); i++)
            if (temp[i] == '/')
                temp[i] = '_';

        string name = FreeampDir(NULL) + string("/") + string(temp) +
                      string(".m3u");
        p->m_currentListName = string(name);

        p->SaveCurrentPlaylist();
    }
}

static void save_list(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    if (p->m_currentListName.length() == 0) {
        saveas_list(p, action, w);
    }
    else
        p->SaveCurrentPlaylist();
}

static void save_list_tool(GtkWidget *w, GTKMusicBrowser *p)
{
    save_list(p, 0, w);
}

static void export_list(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    FileSelector *filesel = new FileSelector("Export This Playlist to Disk");
    if (filesel->Run())
        p->SaveCurrentPlaylist(filesel->GetReturnPath());
    delete filesel;
}

static void import_list(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    import_tool(w, p);
}

static void add_track_mb(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    if (p->GetClickState() == kContextBrowser) {
        vector<PlaylistItem *> *newlist = getTreeSelection(p->musicBrowserTree);
        p->AddTracksPlaylistEvent(newlist, true);
    }
}

static void add_track_tool(GtkWidget *w, GTKMusicBrowser *p)
{
    add_track_mb(p, 0, w);
}

static void add_track(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    FileSelector *filesel = new FileSelector("Add a Track");
    filesel->SetExtended();
    if (filesel->Run()) {
        char *filereturn = strdup_new(filesel->GetReturnPath());
        if (filereturn) {
            char *temp;
            char *first;
            first = strtok(filereturn, "\n");
            while ((temp = strtok(NULL, "\n"))) {
                p->AddTrackPlaylistEvent(temp);
                p->m_currentindex++;
            }
            p->AddTrackPlaylistEvent(first);
       }
       delete filereturn;
    }
    delete filesel;
}

static void delete_sel(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    string urlToDel;

    if (p->GetClickState() == kContextPlaylist)
        urlToDel = p->GetContext()->plm->ItemAt(p->m_currentindex)->URL();
    else if (p->GetClickState() == kContextBrowser) {
        if (p->GetTreeClick() == kClickPlaylist) 
            urlToDel = p->mbSelection->playlistname;
        else if (p->GetTreeClick() == kClickTrack)
            urlToDel = p->mbSelection->track->URL();
        else
            return;
    }

    uint32 length = urlToDel.length();
    char *filename = new char[length];

    if (IsntError(URLToFilePath(urlToDel.c_str(), filename, &length))) {
        GTKMessageDialog oBox;
        string oMessage = string("Are you sure you want to delete ")
                          + string(filename) + string("?");

        if (oBox.Show(oMessage.c_str(), "Delete Confirmation", kMessageYesNo,
                      true, false, "Delete it Permantly From the Disk") 
                      == kMessageReturnYes) {

            if (oBox.GetCheckStatus())
                unlink(filename);

            if (p->GetClickState() == kContextPlaylist) {
                p->DeleteEvent();
            }
            else if (p->GetClickState() == kContextBrowser) {
                if (p->GetTreeClick() == kClickPlaylist) {
                    p->GetContext()->catalog->RemovePlaylist(p->mbSelection->playlistname.c_str());
                }
                else if (p->GetTreeClick() == kClickTrack) {
                    p->GetContext()->catalog->RemoveSong(p->mbSelection->track->URL().c_str());
                }
            }
        }
    }

    delete [] filename;
}

static void move_up(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    p->MoveUpEvent();
}

static void move_down(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    p->MoveDownEvent();
}

static void clear_list(GTKMusicBrowser *p, guint action, GtkWidget *w)
{
    p->DeleteListEvent();
}

void GTKMusicBrowser::CreateMenu(GtkWidget *topbox)
{
    GtkAccelGroup *accel_group;
    GtkWidget *separator;

    accel_group = gtk_accel_group_new();
    menuFactory = gtk_item_factory_new(GTK_TYPE_MENU_BAR, "<blah>", 
                                        accel_group); 
    CreateMenuItems(menuFactory, (void *)this);
    
    gtk_accel_group_attach(accel_group, GTK_OBJECT(musicBrowser));
    gtk_box_pack_start(GTK_BOX(topbox), gtk_item_factory_get_widget(
                       menuFactory, "<blah>"), FALSE, TRUE, 0);
    gtk_widget_show(gtk_item_factory_get_widget(menuFactory, "<blah>"));
    
    separator = gtk_hseparator_new();
    gtk_box_pack_start(GTK_BOX(topbox), separator, FALSE, TRUE, 0);
    gtk_widget_show(separator);
}

void GTKMusicBrowser::UpdatePlaylistList(void)
{
    if (!playlistList || !m_plm)
        return;

    gtk_clist_freeze(GTK_CLIST(playlistList));
    gtk_clist_clear(GTK_CLIST(playlistList));

    uint32 iLoop = m_plm->CountItems();

    for (uint32 i = 0; i < iLoop; i++) {
        PlaylistItem *item = m_plm->ItemAt(i);

        if (!item)
            continue;

        while (item->GetState() == kPlaylistItemState_RetrievingMetaData)
           usleep(10);

        MetaData mdata = item->GetMetaData();
        char *iText[4];
        char position[10];
        char *title;
        char *artist;
        char length[50];

        sprintf(position, "%d", i + 1);
        title = (char *)mdata.Title().c_str();
        artist = (char *)mdata.Artist().c_str();

        if (mdata.Time() == 0)
            sprintf(length, "Unknown");
        else {
            int secs = mdata.Time();
            if (secs > 3600)
                spr