UnityEditor.CurvePresetLibrary.Draw C# (CSharp) Method

        public override void Draw(Rect rect, int index)
        {
            this.DrawInternal(rect, this.m_Presets[index].curve);
        }

        void OnGUI()
        {
            bool gotMouseUp = (Event.current.type == EventType.MouseUp);

            if (m_DelegateView == null && m_OnCurveChanged == null)
            {
                m_Curve = null;
            }

            if (ms_Styles == null)
            {
                ms_Styles = new Styles();
            }

            // Curve Editor
            m_CurveEditor.rect         = GetCurveEditorRect();
            m_CurveEditor.hRangeLocked = Event.current.shift;
            m_CurveEditor.vRangeLocked = EditorGUI.actionKey;

            GUI.changed = false;

            GUI.Label(m_CurveEditor.drawRect, GUIContent.none, ms_Styles.curveEditorBackground);
            m_CurveEditor.OnGUI();

            // Preset swatch area
            GUI.Box(new Rect(0, position.height - kPresetsHeight, position.width, kPresetsHeight), "", ms_Styles.curveSwatchArea);
            Color curveColor = m_Color;

            curveColor.a *= 0.6f;
            const float margin = 45f;
            const float width  = 40f;
            const float height = 25f;
            float       yPos   = position.height - kPresetsHeight + (kPresetsHeight - height) * 0.5f;

            InitCurvePresets();
            CurvePresetLibrary curveLibrary = m_CurvePresets.GetPresetLibraryEditor().GetCurrentLib();

            if (curveLibrary != null)
            {
                for (int i = 0; i < curveLibrary.Count(); i++)
                {
                    Rect swatchRect = new Rect(margin + (width + 5f) * i, yPos, width, height);
                    m_GUIContent.tooltip = curveLibrary.GetName(i);
                    if (GUI.Button(swatchRect, m_GUIContent, ms_Styles.curveSwatch))
                    {
                        AnimationCurve animCurve = curveLibrary.GetPreset(i) as AnimationCurve;
                        m_Curve.keys         = GetDenormalizedKeys(animCurve.keys);
                        m_Curve.postWrapMode = animCurve.postWrapMode;
                        m_Curve.preWrapMode  = animCurve.preWrapMode;
                        m_CurveEditor.SelectNone();
                        SendEvent(CurveChangedCommand, true);
                    }
                    if (Event.current.type == EventType.Repaint)
                    {
                        curveLibrary.Draw(swatchRect, i);
                    }

                    if (swatchRect.xMax > position.width - 2 * margin)
                    {
                        break;
                    }
                }
            }

            Rect presetDropDownButtonRect = new Rect(margin - 20f, yPos + 5f, 20, 20);

            PresetDropDown(presetDropDownButtonRect);

            // For adding default preset curves
            //if (EditorGUI.DropdownButton(new Rect (position.width -26, yPos, 20, 20), GUIContent.none, FocusType.Passive, "OL Plus"))
            //  AddDefaultPresetsToCurrentLib ();

            if (Event.current.type == EventType.Used && gotMouseUp)
            {
                DoUpdateCurve(false);
                SendEvent(CurveChangeCompletedCommand, true);
            }
            else if (Event.current.type != EventType.Layout && Event.current.type != EventType.Repaint)
            {
                DoUpdateCurve(true);
            }
        }