public async Task <bool> DeleteSong(string fileName)
{
IPlatformStorage storage = MainPage.PlatformStorage;
bool success = await storage.DeleteFile(fileName);
return(success);
}
public bool Equals(IPlatformStorage other)
{
if (other == null)
{
return(false);
}
return(m_id == other.Id);
}
private async void LoadSong(object sender, EventArgs e)
{
if (SongHasUnsavedChanges)
{
bool confirm = await DisplayAlert("Question", "The current song has unsaved changes. Are you sure you want to load another song?", "Yes", "No");
if (!confirm)
{
return;
}
}
IPlatformStorage storage = MainPage.PlatformStorage;
string[] fileList = await storage.GetExistingFileList();
await Navigation.PushAsync(new SongSelectPage(this, fileList));
}
// Standard constructor, receiving the settings object to modify if the save button is pressed
public SettingsPage(SettingsObject _settings, IPlatformStorage _platformStorage)
{
// Don't show the navigation action bar
NavigationPage.SetHasNavigationBar(this, false);
// Stash settings objects locally and initialise the layout stuff
settings = _settings;
platformStorage = _platformStorage;
InitializeComponent();
BindingContext = this;
// Make a local copy of the settings object
localSettings = new SettingsObject(null);
localSettings.FlashCues = settings.FlashCues;
localSettings.FlashColor = new Color(
settings.FlashColor.R,
settings.FlashColor.G,
settings.FlashColor.B
);
localSettings.OneTapGain = settings.OneTapGain;
localSettings.OneTapDuration = settings.OneTapDuration;
// Set what the sliders do
sliderBPMGain.PropertyChanged += SliderBPMGain_PropertyChanged;
sliderDuration.PropertyChanged += SliderDuration_PropertyChanged;
// Initialise controls
sliderBPMGain.Value = localSettings.OneTapGain * 100.0f;
sliderDuration.Value = localSettings.OneTapDuration / 6.0f;
updateCuesDisplay();
updateSliderBPMGainDisplay(localSettings.OneTapGain);
updateSliderBPMDurationDisplay(localSettings.OneTapDuration);
// Initialise more controls
if (settings.OneTapType == PlaybackObject.TempoLiftType.LiftGradual)
{
pickLiftType.SelectedIndex = 0;
}
else
{
pickLiftType.SelectedIndex = 1;
}
}
// Read platform-specific storage, or set default values if unable
public SettingsObject(IPlatformStorage platformStorage)
{
if (platformStorage != null && platformStorage.KeyExists(KEY_CUES))
{
FlashCues = platformStorage.GetBoolean(KEY_CUES);
FlashColor = new Color(
platformStorage.GetFloat(KEY_COLOR_R),
platformStorage.GetFloat(KEY_COLOR_G),
platformStorage.GetFloat(KEY_COLOR_B)
);
OneTapGain = platformStorage.GetFloat(KEY_BPM_GAIN);
OneTapDuration = platformStorage.GetFloat(KEY_BPM_DURATION);
OneTapType = (PlaybackObject.TempoLiftType)platformStorage.GetInt(KEY_LIFT_TYPE);
}
else
{
FlashCues = false;
FlashColor = new Color(0.0, 0.8, 0.8);
OneTapGain = 0.2f;
OneTapDuration = 180.0f;
OneTapType = 0;
}
}
private SQLiteConnection(string fileName, SQLiteOpen openFlag, bool setTemporaryDirectory)
{
this.platformMarshal = Platform.Instance.PlatformMarshal;
this.platformStorage = Platform.Instance.PlatformStorage;
this.sqlite3Provider = Platform.Instance.SQLite3Provider;
if (setTemporaryDirectory)
{
this.SetTemporaryDirectory();
}
var localFilePath = string.Empty;
if (fileName.Trim().ToLowerInvariant() == ":memory:")
{
localFilePath = ":memory:";
}
else if (fileName.Trim() != string.Empty)
{
localFilePath = this.platformStorage.GetLocalFilePath(fileName);
}
var fileNamePtr = this.platformMarshal.MarshalStringManagedToNativeUTF8(localFilePath);
int flags;
switch (openFlag)
{
case SQLiteOpen.READONLY:
// URI|DONTCREATE|READONLY
flags = 0x41;
break;
case SQLiteOpen.READWRITE:
// URI|CREATE|READWRITE
flags = 0x46;
break;
default:
// URI|CREATE|READWRITE
flags = 0x46;
break;
}
try
{
var openResult = (SQLiteResult)this.sqlite3Provider.Sqlite3Open(fileNamePtr, out this.db, flags);
if (openResult != SQLiteResult.OK)
{
if (this.db != IntPtr.Zero)
{
var errmsgPtr = this.sqlite3Provider.Sqlite3Errmsg(this.db);
var errmsg = this.platformMarshal.MarshalStringNativeUTF8ToManaged(errmsgPtr);
this.sqlite3Provider.Sqlite3CloseV2(this.db);
throw new SQLiteException("Unable to open the database file: " + fileName + " Details: " + errmsg);
}
else
{
throw new SQLiteException("Unable to open the database file: " + fileName + " Details: " + openResult.ToString());
}
}
}
catch (SQLiteException)
{
throw;
}
catch (Exception ex)
{
throw new SQLiteException("Unable to open the database file: " + fileName, ex);
}
finally
{
if (fileNamePtr != IntPtr.Zero)
{
this.platformMarshal.CleanUpStringNativeUTF8(fileNamePtr);
}
}
}
public MainPage(IPlatformStorage platformStorage, IPlatformAudioPlayer audioPlayer)
{
// Initialise layout, and don't show the navigation action bar
NavigationPage.SetHasNavigationBar(this, false);
InitializeComponent();
// Don't re-create assets if the app is already running and the song etc. are already created
if (PlatformStorage == null || AudioPlayer == null || Settings == null || Playback == null || song == null || timer == null)
{
// Stash the platform storage and audio interface object locally
PlatformStorage = platformStorage;
AudioPlayer = audioPlayer;
// Create the settings and playback objects
Settings = new SettingsObject(platformStorage);
Playback = new PlaybackObject();
// Create a new default song and timer
song = new Song();
timer = new Timer(TimerElapsed, 1000);
}
// Update the section display when MainPage size changes
SizeChanged += (sender, e) => {
// Get content window sizes
double width = this.Width;
double height = this.Height;
// Size according to orientation
double ctrlSize = width > height ? 0.15 * (height - 40) : 0.25 * (width - 40);
BottomCtrlRow.Height = ctrlSize;
CtrlColumn1.Width = ctrlSize;
CtrlColumn2.Width = ctrlSize;
ctrlSize = width > height ? 0.15 * (height + 20) : 0.25 * (width + 20);
PlaybackCtrlPlayStop.WidthRequest = ctrlSize * 0.5;
PlaybackCtrlPlayStop.HeightRequest = ctrlSize * 0.5;
PlaybackCtrlRewind.WidthRequest = ctrlSize * 0.3;
PlaybackCtrlRewind.HeightRequest = ctrlSize * 0.3;
PlaybackCtrlForward.WidthRequest = ctrlSize * 0.3;
PlaybackCtrlForward.HeightRequest = ctrlSize * 0.3;
PlaybackCtrlPause.WidthRequest = ctrlSize * 0.3;
PlaybackCtrlPause.HeightRequest = ctrlSize * 0.3;
};
// Set image on the play-stop button
if (Playback.IsPlaying)
{
PlaybackCtrlPlayStop.Source = "stopbutton.png";
}
else
{
PlaybackCtrlPlayStop.Source = "playbutton.png";
};
// Populate the song display when the layout is measured
layoutSectionDisplay.MeasurePerformed += UpdateDisplay;
// Initialise display parameters
LastProgressSection = false;
LastProgressSong = false;
LastProgressSession = false;
// Initialise the timer-type stuff
TempoSliderChanged(null, null);
flashTimerRunning = false;
LastTapTime = -1;
}
private SQLiteConnection(string fileName, SQLiteOpen openFlag, bool setTemporaryDirectory)
{
this.platformMarshal = Platform.Instance.PlatformMarshal;
this.platformStorage = Platform.Instance.PlatformStorage;
this.sqlite3Provider = Platform.Instance.SQLite3Provider;
if (setTemporaryDirectory)
{
this.SetTemporaryDirectory();
}
var localFilePath = string.Empty;
if (fileName.Trim().ToLowerInvariant() == ":memory:")
{
localFilePath = ":memory:";
}
else if (fileName.Trim() != string.Empty)
{
localFilePath = this.platformStorage.GetLocalFilePath(fileName);
}
var fileNamePtr = this.platformMarshal.MarshalStringManagedToNativeUTF8(localFilePath);
int flags;
switch (openFlag)
{
case SQLiteOpen.READONLY:
// URI|DONTCREATE|READONLY
flags = 0x41;
break;
case SQLiteOpen.READWRITE:
// URI|CREATE|READWRITE
flags = 0x46;
break;
default:
// URI|CREATE|READWRITE
flags = 0x46;
break;
}
try
{
var openResult = (SQLiteResult)this.sqlite3Provider.Sqlite3Open(fileNamePtr, out this.db, flags);
if (openResult != SQLiteResult.OK)
{
if (this.db != IntPtr.Zero)
{
var errmsgPtr = this.sqlite3Provider.Sqlite3Errmsg(this.db);
var errmsg = this.platformMarshal.MarshalStringNativeUTF8ToManaged(errmsgPtr);
this.sqlite3Provider.Sqlite3CloseV2(this.db);
throw new SQLiteException("Unable to open the database file: " + fileName + " Details: " + errmsg);
}
else
{
throw new SQLiteException("Unable to open the database file: " + fileName + " Details: " + openResult.ToString());
}
}
}
catch (SQLiteException)
{
throw;
}
catch (Exception ex)
{
throw new SQLiteException("Unable to open the database file: " + fileName, ex);
}
finally
{
if (fileNamePtr != IntPtr.Zero)
{
this.platformMarshal.CleanUpStringNativeUTF8(fileNamePtr);
}
}
}
public string MountStorage(IPlatformStorage storageManager)
{
throw new NotImplementedException();
}
public App(IPlatformStorage platformStorage, IPlatformAudioPlayer audioPlayer)
{
InitializeComponent();
MainPage = new NavigationPage(new MetronomeAmplified.MainPage(platformStorage, audioPlayer));
}
public static bool Equals(IPlatformStorage left, IPlatformStorage right)
{
return(left.Equals(right));
}
public async void LoadSong(string fileName)
{
IPlatformStorage storage = MainPage.PlatformStorage;
await storage.OpenFile(fileName, false);
try
{
// Get song details
// Name
// Number of section
SongName = storage.FileReadString();
int length = storage.FileReadInt();
SongList.Clear();
// For each section, get section details
// Name
// Repetitions
// Tempo
// BeatsPerMeasure
// BeatValue
// Number of notes in the sequence
// (The sequence)
for (int s = 0; s < length; s++)
{
// Basic properties
Section sec = Section.GetNewBasicSection();
sec.Name = storage.FileReadString();
sec.Repetitions = storage.FileReadInt();
sec.Tempo = (double)storage.FileReadFloat();
sec.BeatsPerMeasure = storage.FileReadInt();
sec.BeatValue = storage.FileReadInt();
int numberOfNotes = storage.FileReadInt();
sec.Sequence = new List <Note>();
// For each note in sequence, put all non-derived properties
// IsSound
// NoteType
// IsDotted
// Tuplet
// TieString
// Accent
for (int n = 0; n < numberOfNotes; n++)
{
Note note = new Note(4, 0);
note.IsSound = storage.FileReadBool();
note.NoteType = storage.FileReadInt();
note.IsDotted = storage.FileReadBool();
note.Tuplet = storage.FileReadInt();
note.TieString = storage.FileReadInt();
note.Accent = storage.FileReadInt();
sec.Sequence.Add(note);
}
SongList.Add(sec);
CurrentSong.Sections[s].CalculateDerivedAttributes();
}
ParentPage.UpdateDisplay();
SongHasUnsavedChanges = false;
}
catch (Exception ex)
{
await DisplayAlert("Issue", "Could not load the song - " + ex.Message, "OK");
}
finally
{
await storage.CloseFile(false);
}
}
private async void SaveSong(object sender, EventArgs e)
{
IPlatformStorage storage = MainPage.PlatformStorage;
string fileName = CurrentSong.Name + ".gma";
bool exists = await storage.FileExists(fileName);
if (exists)
{
bool accepted = await DisplayAlert("Information", "A song is already saved with that name. Would you like to overwrite it?", "Yes", "No");
if (!accepted)
{
await DisplayAlert("Information", "The song was not saved.", "OK");
return;
}
}
await storage.OpenFile(fileName, true);
try
{
// Put song details
// Name
// Number of section
int length = CurrentSong.NumberOfSections;
storage.FileWriteString(CurrentSong.Name);
storage.FileWriteInt(length);
// For each section, put section details
// Name
// Repetitions
// Tempo
// BeatsPerMeasure
// BeatValue
// Number of notes in the sequence
// (The sequence)
for (int s = 0; s < length; s++)
{
// Basic properties
Section sec = CurrentSong.Sections[s];
int numberOfNotes = sec.Sequence.Count;
storage.FileWriteString(sec.Name);
storage.FileWriteInt(sec.Repetitions);
storage.FileWriteFloat((float)sec.Tempo);
storage.FileWriteInt(sec.BeatsPerMeasure);
storage.FileWriteInt(sec.BeatValue);
storage.FileWriteInt(numberOfNotes);
// For each note in sequence, put all non-derived properties
// IsSound
// NoteType
// IsDotted
// Tuplet
// TieString
// Accent
for (int n = 0; n < numberOfNotes; n++)
{
Note note = sec.Sequence[n];
storage.FileWriteBool(note.IsSound);
storage.FileWriteInt(note.NoteType);
storage.FileWriteBool(note.IsDotted);
storage.FileWriteInt(note.Tuplet);
storage.FileWriteInt(note.TieString);
storage.FileWriteInt(note.Accent);
}
}
await DisplayAlert("Information", "Song saved.", "OK");
SongHasUnsavedChanges = false;
}
catch (Exception ex)
{
await DisplayAlert("Issue", "Could not save the song - " + ex.Message, "OK");
}
finally
{
await storage.CloseFile(true);
}
}