EaseClip.cs
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using System;
using System.Text;
using UnityEngine;
using UnityEngine.Timeline;
namespace UnityEditor.Timeline
{
class EaseClip : Manipulator
{
bool m_IsCaptured;
bool m_UndoSaved;
TimelineClipHandle m_EaseClipHandler;
ManipulateEdges m_Edges;
TimelineClip m_Clip;
StringBuilder m_OverlayText = new StringBuilder("");
double m_OriginalValue;
public static readonly string EaseInClipText = L10n.Tr("Ease In Clip");
public static readonly string EaseOutClipText = L10n.Tr("Ease Out Clip");
public static readonly string EaseInText = L10n.Tr("Ease In");
public static readonly string EaseOutText = L10n.Tr("Ease Out");
public static readonly string DurationFrameText = L10n.Tr(" Duration {0:0.00;-0.00} frames ");
public static readonly string DurationSecText = L10n.Tr(" Duration {0:0.00;-0.00} s ");
public static readonly string DeltaFrameText = L10n.Tr("({0:+0.00;-0.00} frames)");
public static readonly string DeltaSecText = L10n.Tr("({0:+0.00;-0.00} s)");
protected override bool MouseDown(Event evt, WindowState state)
{
if (evt.modifiers != ManipulatorsUtils.actionModifier)
return false;
return MouseDownInternal(evt, state, PickerUtils.PickedLayerableOfType<TimelineClipHandle>());
}
protected bool MouseDownInternal(Event evt, WindowState state, TimelineClipHandle handle)
{
if (handle == null)
return false;
if (handle.clipGUI.clip != null && !handle.clipGUI.clip.clipCaps.HasAny(ClipCaps.Blending))
return false;
m_Edges = ManipulateEdges.Right;
if (handle.trimDirection == TrimEdge.Start)
m_Edges = ManipulateEdges.Left;
if (m_Edges == ManipulateEdges.Left && handle.clipGUI.clip.hasBlendIn || m_Edges == ManipulateEdges.Right && handle.clipGUI.clip.hasBlendOut)
return false;
m_IsCaptured = true;
m_UndoSaved = false;
m_EaseClipHandler = handle;
m_Clip = handle.clipGUI.clip;
m_OriginalValue = m_Edges == ManipulateEdges.Left ? m_Clip.easeInDuration : m_Clip.easeOutDuration;
// Change cursor only when OnGUI Process (not in test)
if (GUIUtility.guiDepth > 0)
TimelineCursors.SetCursor(m_Edges == ManipulateEdges.Left ? TimelineCursors.CursorType.MixRight : TimelineCursors.CursorType.MixLeft);
state.AddCaptured(this);
return true;
}
protected override bool MouseUp(Event evt, WindowState state)
{
if (!m_IsCaptured)
return false;
m_IsCaptured = false;
m_UndoSaved = false;
state.captured.Clear();
// Clear cursor only when OnGUI Process (not in test)
if (GUIUtility.guiDepth > 0)
TimelineCursors.ClearCursor();
return true;
}
protected override bool MouseDrag(Event evt, WindowState state)
{
if (!m_IsCaptured)
return false;
if (!m_UndoSaved)
{
var uiClip = m_EaseClipHandler.clipGUI;
string undoName = m_Edges == ManipulateEdges.Left ? EaseInClipText : EaseOutClipText;
TimelineUndo.PushUndo(uiClip.clip.parentTrack, undoName);
m_UndoSaved = true;
}
double d = state.PixelDeltaToDeltaTime(evt.delta.x);
if (m_Edges == ManipulateEdges.Left)
{
m_Clip.easeInDuration = Math.Max(0, m_Clip.easeInDuration + d);
}
else if (m_Edges == ManipulateEdges.Right)
{
m_Clip.easeOutDuration = Math.Max(0, m_Clip.easeOutDuration - d);
}
RefreshOverlayStrings(m_EaseClipHandler, state);
return true;
}
public override void Overlay(Event evt, WindowState state)
{
if (!m_IsCaptured)
return;
if (m_OverlayText.Length > 0)
{
int stringLength = m_OverlayText.Length;
var r = new Rect(evt.mousePosition.x - (stringLength / 2.0f),
m_EaseClipHandler.clipGUI.rect.yMax,
stringLength, 20);
GUI.Label(r, m_OverlayText.ToString(), TimelineWindow.styles.tinyFont);
}
}
void RefreshOverlayStrings(TimelineClipHandle handle, WindowState state)
{
m_OverlayText.Length = 0;
m_OverlayText.Append(m_Edges == ManipulateEdges.Left ? EaseInText : EaseOutText);
double easeDuration = m_Edges == ManipulateEdges.Left ? m_Clip.easeInDuration : m_Clip.easeOutDuration;
double deltaDuration = easeDuration - m_OriginalValue;
bool hasDurationDelta = Math.Abs(deltaDuration) > double.Epsilon;
if (state.timeInFrames)
{
easeDuration *= state.editSequence.frameRate;
deltaDuration *= state.editSequence.frameRate;
m_OverlayText.AppendFormat(DurationFrameText, easeDuration);
if (hasDurationDelta)
{
m_OverlayText.AppendFormat(DeltaFrameText, deltaDuration);
}
}
else
{
m_OverlayText.AppendFormat(DurationSecText, easeDuration);
if (hasDurationDelta)
{
m_OverlayText.AppendFormat(DeltaSecText, deltaDuration);
}
}
}
}
}