private void DrawButton(Rect position, SerializedProperty prop)
{
if (prop.objectReferenceValue != null)
{
position.x -= 4;
AudioClip clip = prop.objectReferenceValue as AudioClip;
Rect buttonRect = new Rect(position);
buttonRect.width = 20;
Rect waveformRect = new Rect(position);
waveformRect.x += 22;
waveformRect.width -= 22;
Texture2D waveformTexture = AssetPreview.GetAssetPreview(prop.objectReferenceValue);
if (waveformTexture != null)
{
GUI.DrawTexture(waveformRect, waveformTexture);
}
bool isPlaying = AudioUtility.IsClipPlaying(clip) && (CurrentClip == prop.propertyPath);
string buttonText = "";
Action <SerializedProperty, AudioClip> buttonAction;
if (isPlaying)
{
EditorUtility.SetDirty(prop.serializedObject.targetObject);
buttonAction = GetStateInfo(ButtonState.Stop, out buttonText);
Rect progressRect = new Rect(waveformRect);
float percentage = (float)AudioUtility.GetClipSamplePosition(clip) / AudioUtility.GetSampleCount(clip);
float width = progressRect.width * percentage;
progressRect.width = Mathf.Clamp(width, 6, width);
GUI.Box(progressRect, "", "SelectionRect");
}
else
{
buttonAction = GetStateInfo(ButtonState.Play, out buttonText);
}
if (GUI.Button(buttonRect, buttonText))
{
AudioUtility.StopAllClips();
buttonAction(prop, clip);
}
}
}
void Update()
{
float deltaTime = Time.realtimeSinceStartup - prevTime;
prevTime = Time.realtimeSinceStartup;
if (seekPosition != oldSeekPosition)
{
oldSeekPosition = seekPosition;
if (!isPlaying)
{
if (!previewing && lsdTarget.clip != null)
{
AudioUtility.PlayClip(lsdTarget.clip);
}
previewing = true;
stopTimer = 0.1f;
prevTime = Time.realtimeSinceStartup;
resetTime = seekPosition;
}
if (lsdTarget.clip)
{
AudioUtility.SetClipSamplePosition(lsdTarget.clip, (int)(seekPosition * AudioUtility.GetSampleCount(lsdTarget.clip)));
}
}
if (previewing)
{
stopTimer -= deltaTime;
if (lsdTarget.clip)
{
seekPosition = AudioUtility.GetClipPosition(lsdTarget.clip) / lsdTarget.length;
oldSeekPosition = seekPosition;
}
if (stopTimer <= 0)
{
previewing = false;
seekPosition = resetTime;
oldSeekPosition = seekPosition;
if (lsdTarget.clip != null)
{
AudioUtility.PauseClip(lsdTarget.clip);
AudioUtility.SetClipSamplePosition(lsdTarget.clip, (int)(seekPosition * AudioUtility.GetSampleCount(lsdTarget.clip)));
}
}
}
if (isPlaying && lsdTarget.clip == null)
{
seekPosition += deltaTime / lsdTarget.length;
oldSeekPosition = seekPosition;
if (seekPosition >= 1)
{
isPlaying = false;
seekPosition = 0;
}
}
else if (isPlaying)
{
seekPosition = AudioUtility.GetClipPosition(lsdTarget.clip) / lsdTarget.length;
oldSeekPosition = seekPosition;
isPlaying = AudioUtility.IsClipPlaying(lsdTarget.clip);
}
if (isPlaying && visualPreview || previewing && visualPreview)
{
UpdatePreview(seekPosition);
}
}