UnityEditor.ColorPicker.DoColorSpaceGUI C# (CSharp) Method

        private void DoColorSpaceGUI()
        {
            GUILayout.BeginHorizontal(new GUILayoutOption[0]);
            GUILayout.FlexibleSpace();
            GUILayoutOption[] options = new GUILayoutOption[] { GUILayout.ExpandWidth(false) };
            if (GUILayout.Button(styles.colorCycle, GUIStyle.none, options))
            {
                this.m_OldColorBoxMode = this.m_ColorBoxMode = (this.m_ColorBoxMode + 1) % ColorBoxMode.EyeDropper;
            }
            GUILayout.EndHorizontal();
            GUILayout.BeginHorizontal(new GUILayoutOption[0]);
            GUILayout.Space(20f);
            GUILayout.BeginVertical(new GUILayoutOption[0]);
            GUILayout.Space(7f);
            bool changed = GUI.changed;
            GUILayoutOption[] optionArray2 = new GUILayoutOption[] { GUILayout.ExpandHeight(false) };
            GUILayout.BeginHorizontal(optionArray2);
            GUILayoutOption[] optionArray3 = new GUILayoutOption[] { GUILayout.MinWidth(64f), GUILayout.MinHeight(64f), GUILayout.MaxWidth(256f), GUILayout.MaxHeight(256f) };
            Rect boxPos = GUILayoutUtility.GetAspectRect(1f, styles.pickerBox, optionArray3);
            EditorGUILayout.Space();
            Rect sliderPos = GUILayoutUtility.GetRect(8f, 32f, 64f, 128f, styles.pickerBox);
            sliderPos.height = boxPos.height;
            GUILayout.EndHorizontal();
            GUI.changed = false;
            switch (this.m_ColorBoxMode)
            {
                case ColorBoxMode.SV_H:
                    this.Slider3D(boxPos, sliderPos, ref this.m_S, ref this.m_V, ref this.m_H, styles.pickerBox, styles.thumb2D, styles.thumbVert);
                    if (GUI.changed)
                    {
                        this.HSVToRGB();
                    }
                    break;

                case ColorBoxMode.HV_S:
                    this.Slider3D(boxPos, sliderPos, ref this.m_H, ref this.m_V, ref this.m_S, styles.pickerBox, styles.thumb2D, styles.thumbVert);
                    if (GUI.changed)
                    {
                        this.HSVToRGB();
                    }
                    break;

                case ColorBoxMode.HS_V:
                    this.Slider3D(boxPos, sliderPos, ref this.m_H, ref this.m_S, ref this.m_V, styles.pickerBox, styles.thumb2D, styles.thumbVert);
                    if (GUI.changed)
                    {
                        this.HSVToRGB();
                    }
                    break;

                case ColorBoxMode.BG_R:
                    this.Slider3D(boxPos, sliderPos, ref this.m_B, ref this.m_G, ref this.m_R, styles.pickerBox, styles.thumb2D, styles.thumbVert);
                    if (GUI.changed)
                    {
                        this.RGBToHSV();
                    }
                    break;

                case ColorBoxMode.BR_G:
                    this.Slider3D(boxPos, sliderPos, ref this.m_B, ref this.m_R, ref this.m_G, styles.pickerBox, styles.thumb2D, styles.thumbVert);
                    if (GUI.changed)
                    {
                        this.RGBToHSV();
                    }
                    break;

                case ColorBoxMode.RG_B:
                    this.Slider3D(boxPos, sliderPos, ref this.m_R, ref this.m_G, ref this.m_B, styles.pickerBox, styles.thumb2D, styles.thumbVert);
                    if (GUI.changed)
                    {
                        this.RGBToHSV();
                    }
                    break;

                case ColorBoxMode.EyeDropper:
                    EyeDropper.DrawPreview(Rect.MinMaxRect(boxPos.x, boxPos.y, sliderPos.xMax, boxPos.yMax));
                    break;
            }
            GUI.changed |= changed;
            GUILayout.Space(5f);
            GUILayout.EndVertical();
            GUILayout.Space(20f);
            GUILayout.EndHorizontal();
        }