Inital commit

1 files changed, 232 insertions, 0 deletions

diff --git a/Library/PackageCache/com.unity.timeline@1.2.13/Editor/Manipulators/Sequence/TrimClip.cs b/Library/PackageCache/com.unity.timeline@1.2.13/Editor/Manipulators/Sequence/TrimClip.cs
new file mode 100644
index 0000000..0918a17
--- /dev/null
+++ b/Library/PackageCache/com.unity.timeline@1.2.13/Editor/Manipulators/Sequence/TrimClip.cs
@@ -0,0 +1,232 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using UnityEngine;
+using UnityEngine.Timeline;
+
+namespace UnityEditor.Timeline
+{
+    class TrimClip : Manipulator
+    {
+        class TrimClipAttractionHandler : IAttractionHandler
+        {
+            public void OnAttractedEdge(IAttractable attractable, ManipulateEdges manipulateEdges, AttractedEdge edge, double time)
+            {
+                var clipGUI = attractable as TimelineClipGUI;
+                if (clipGUI == null)
+                    return;
+
+                var clipItem = ItemsUtils.ToItem(clipGUI.clip);
+                if (manipulateEdges == ManipulateEdges.Right)
+                {
+                    bool affectTimeScale = Event.current.modifiers == EventModifiers.Shift; // TODO Do not use Event.current from here.
+                    EditMode.TrimEnd(clipItem, time, affectTimeScale);
+                }
+                else if (manipulateEdges == ManipulateEdges.Left)
+                {
+                    EditMode.TrimStart(clipItem, time);
+                }
+            }
+        }
+
+        bool m_IsCaptured;
+        TimelineClipHandle m_TrimClipHandler;
+
+        double m_OriginalDuration;
+        double m_OriginalTimeScale;
+        bool m_UndoSaved;
+        SnapEngine m_SnapEngine;
+
+        readonly StringBuilder m_OverlayText = new StringBuilder();
+        readonly List<string> m_OverlayStrings = new List<string>();
+
+        static readonly double kEpsilon = 0.0000001;
+
+        protected override bool MouseDown(Event evt, WindowState state)
+        {
+            var handle = PickerUtils.PickedLayerableOfType<TimelineClipHandle>();
+            if (handle == null)
+                return false;
+
+            if (handle.clipGUI.clip.parentTrack != null && handle.clipGUI.clip.parentTrack.lockedInHierarchy)
+                return false;
+
+            if (ItemSelection.CanClearSelection(evt))
+                SelectionManager.Clear();
+
+            if (!SelectionManager.Contains(handle.clipGUI.clip))
+                SelectionManager.Add(handle.clipGUI.clip);
+
+            m_TrimClipHandler = handle;
+
+            m_IsCaptured = true;
+            state.AddCaptured(this);
+
+            m_UndoSaved = false;
+
+            var clip = m_TrimClipHandler.clipGUI.clip;
+
+            m_OriginalDuration = clip.duration;
+            m_OriginalTimeScale = clip.timeScale;
+
+            RefreshOverlayStrings(m_TrimClipHandler, state);
+
+            // in ripple trim, the right edge moves and needs to snap
+            var edges = ManipulateEdges.Right;
+            if (EditMode.editType != EditMode.EditType.Ripple && m_TrimClipHandler.trimDirection == TrimEdge.Start)
+                edges = ManipulateEdges.Left;
+            m_SnapEngine = new SnapEngine(m_TrimClipHandler.clipGUI, new TrimClipAttractionHandler(), edges, state,
+                evt.mousePosition);
+
+            EditMode.BeginTrim(ItemsUtils.ToItem(clip), m_TrimClipHandler.trimDirection);
+
+            return true;
+        }
+
+        protected override bool MouseUp(Event evt, WindowState state)
+        {
+            if (!m_IsCaptured)
+                return false;
+
+            m_IsCaptured = false;
+            m_TrimClipHandler = null;
+            m_UndoSaved = false;
+            m_SnapEngine = null;
+            EditMode.FinishTrim();
+
+            state.captured.Clear();
+
+            return true;
+        }
+
+        protected override bool MouseDrag(Event evt, WindowState state)
+        {
+            if (state.editSequence.isReadOnly)
+                return false;
+
+            if (!m_IsCaptured)
+                return false;
+
+            if (!m_UndoSaved)
+            {
+                var uiClip = m_TrimClipHandler.clipGUI;
+                TimelineUndo.PushUndo(uiClip.clip.parentTrack, "Trim Clip");
+                if (TimelineUtility.IsRecordableAnimationClip(uiClip.clip))
+                {
+                    TimelineUndo.PushUndo(uiClip.clip.animationClip, "Trim Clip");
+                }
+
+                m_UndoSaved = true;
+            }
+
+            if (m_SnapEngine != null)
+                m_SnapEngine.Snap(evt.mousePosition, evt.modifiers);
+
+            RefreshOverlayStrings(m_TrimClipHandler, state);
+
+            if (Selection.activeObject != null)
+                EditorUtility.SetDirty(Selection.activeObject);
+
+            // updates the duration of the graph without rebuilding
+            state.UpdateRootPlayableDuration(state.editSequence.duration);
+
+            return true;
+        }
+
+        public override void Overlay(Event evt, WindowState state)
+        {
+            if (!m_IsCaptured)
+                return;
+
+            EditMode.DrawTrimGUI(state, m_TrimClipHandler.clipGUI, m_TrimClipHandler.trimDirection);
+
+            bool trimStart = m_TrimClipHandler.trimDirection == TrimEdge.Start;
+
+            TimeIndicator.Draw(state, trimStart ? m_TrimClipHandler.clipGUI.start : m_TrimClipHandler.clipGUI.end);
+
+            if (m_SnapEngine != null)
+                m_SnapEngine.OnGUI(trimStart, !trimStart);
+
+            if (m_OverlayStrings.Count > 0)
+            {
+                const float padding = 4.0f;
+                var labelStyle = TimelineWindow.styles.tinyFont;
+                var longestLine = labelStyle.CalcSize(
+                    new GUIContent(m_OverlayStrings.Aggregate("", (max, cur) => max.Length > cur.Length ? max : cur)));
+                var stringLength = longestLine.x + padding;
+                var lineHeight = longestLine.y + padding;
+
+                var r = new Rect(evt.mousePosition.x - (stringLength / 2.0f),
+                    m_TrimClipHandler.clipGUI.rect.yMax,
+                    stringLength, lineHeight);
+
+                foreach (var s in m_OverlayStrings)
+                {
+                    GUI.Label(r, s, labelStyle);
+                    r.y += lineHeight;
+                }
+            }
+        }
+
+        void RefreshOverlayStrings(TimelineClipHandle handle, WindowState state)
+        {
+            m_OverlayStrings.Clear();
+
+            m_OverlayText.Length = 0;
+
+            var differenceDuration = handle.clipGUI.clip.duration - m_OriginalDuration;
+            bool hasDurationDelta = Math.Abs(differenceDuration) > kEpsilon;
+
+            if (state.timeInFrames)
+            {
+                var durationInFrame = handle.clipGUI.clip.duration * state.referenceSequence.frameRate;
+                m_OverlayText.Append("duration: ").Append(durationInFrame.ToString("f2")).Append(" frames");
+
+                if (hasDurationDelta)
+                {
+                    m_OverlayText.Append(" (");
+
+                    if (differenceDuration > 0.0)
+                        m_OverlayText.Append("+");
+
+                    var valueInFrame = differenceDuration * state.referenceSequence.frameRate;
+                    m_OverlayText.Append(valueInFrame.ToString("f2")).Append(" frames)");
+                }
+            }
+            else
+            {
+                m_OverlayText.Append("duration: ").Append(handle.clipGUI.clip.duration.ToString("f2")).Append("s");
+
+                if (hasDurationDelta)
+                {
+                    m_OverlayText.Append(" (");
+
+                    if (differenceDuration > 0.0)
+                        m_OverlayText.Append("+");
+
+                    m_OverlayText.Append(differenceDuration.ToString("f2")).Append("s)");
+                }
+            }
+
+            m_OverlayStrings.Add(m_OverlayText.ToString());
+
+            m_OverlayText.Length = 0;
+
+            var differenceSpeed = m_OriginalTimeScale - handle.clipGUI.clip.timeScale;
+            if (Math.Abs(differenceSpeed) > kEpsilon)
+            {
+                m_OverlayText.Append("speed: ").Append(handle.clipGUI.clip.timeScale.ToString("p2"));
+
+                m_OverlayText.Append(" (");
+
+                if (differenceSpeed > 0.0)
+                    m_OverlayText.Append("+");
+
+                m_OverlayText.Append(differenceSpeed.ToString("p2")).Append(")");
+
+                m_OverlayStrings.Add(m_OverlayText.ToString());
+            }
+        }
+    }
+}