protected override void RenderEvent(FrameRange viewRange, FrameRange validKeyframeRange)
{
int startOffsetHandleId = EditorGUIUtility.GetControlID(FocusType.Passive);
switch (Event.current.type)
{
case EventType.MouseDown:
if (Event.current.alt && EditorGUIUtility.hotControl == 0 && _eventRect.Contains(Event.current.mousePosition))
{
EditorGUIUtility.hotControl = startOffsetHandleId;
_frameMouseDown = SequenceEditor.GetFrameForX(Event.current.mousePosition.x) - _playAudioEvt.Start;
Event.current.Use();
}
break;
case EventType.MouseDrag:
if (EditorGUIUtility.hotControl == startOffsetHandleId)
{
int mouseCurrentFrame = Mathf.Clamp(SequenceEditor.GetFrameForX(Event.current.mousePosition.x) - _playAudioEvt.Start, 0, _playAudioEvt.Length);
int mouseDelta = _frameMouseDown - mouseCurrentFrame;
if (mouseDelta != 0)
{
_frameMouseDown = mouseCurrentFrame;
_startOffset.serializedObject.Update();
_startOffset.intValue = Mathf.Clamp(_startOffset.intValue + mouseDelta, 0, _playAudioEvt.GetMaxStartOffset());
_startOffset.serializedObject.ApplyModifiedProperties();
}
Event.current.Use();
}
break;
case EventType.MouseUp:
if (EditorGUIUtility.hotControl == startOffsetHandleId)
{
EditorGUIUtility.hotControl = 0;
Event.current.Use();
}
break;
}
int frameRangeLength = _playAudioEvt.Length;
base.RenderEvent(viewRange, validKeyframeRange);
if (frameRangeLength != _playAudioEvt.Length)
{
_startOffset.serializedObject.Update();
_startOffset.intValue = Mathf.Clamp(_startOffset.intValue, 0, _playAudioEvt.GetMaxStartOffset());
_startOffset.serializedObject.ApplyModifiedProperties();
}
if (_currentClip != _playAudioEvt.AudioClip)
{
_waveformTexture = FUtility.GetAudioClipTexture(_playAudioEvt.AudioClip, _rect.width, 64);
_currentClip = _playAudioEvt.AudioClip;
}
if (Event.current.type == EventType.Repaint && _waveformTexture != null)
{
float border = 2;
Rect waveformRect = _eventRect;
waveformRect.xMin += border;
waveformRect.xMax -= border;
FrameRange visibleEvtRange = _playAudioEvt.FrameRange;
float startOffset = _playAudioEvt.StartOffset;
if (viewRange.Start > visibleEvtRange.Start)
{
startOffset += viewRange.Start - visibleEvtRange.Start;
visibleEvtRange.Start = viewRange.Start;
}
if (viewRange.End < visibleEvtRange.End)
{
visibleEvtRange.End = viewRange.End;
}
float uvLength = (visibleEvtRange.Length * _playAudioEvt.Sequence.InverseFrameRate) / _playAudioEvt.AudioClip.length;
Rect waveformUVRect = new Rect((startOffset / _playAudioEvt.FrameRange.Length) * ((_playAudioEvt.FrameRange.Length * _playAudioEvt.Sequence.InverseFrameRate) / _playAudioEvt.AudioClip.length), 0, uvLength, 1f);
float uvPerPixel = uvLength / waveformRect.width;
float borderUVs = border * uvPerPixel;
waveformUVRect.xMin += borderUVs;
waveformUVRect.xMax -= borderUVs;
if (_currentClip.channels == 1)
{
waveformUVRect.yMin = 0.3f;
waveformUVRect.yMax = 0.7f;
}
GUI.DrawTextureWithTexCoords(waveformRect, _waveformTexture, waveformUVRect);
}
}
