public BuilderInspectorCanvas(BuilderInspector inspector)
        {
            m_Inspector       = inspector;
            m_Document        = inspector.document;
            m_CanvasInspector = m_Inspector.Q(ContainerName);

            var builderWindow = inspector.paneWindow as Builder;

            if (builderWindow == null)
            {
                return;
            }

            m_Canvas = builderWindow.canvas;

            m_CameraModeEnabled = false;

            // Size Fields
            m_CanvasWidth = root.Q <IntegerField>("canvas-width");
            m_CanvasWidth.RegisterValueChangedCallback(OnWidthChange);
            m_CanvasHeight = root.Q <IntegerField>("canvas-height");
            m_CanvasHeight.RegisterValueChangedCallback(OnHeightChange);
            m_Canvas.RegisterCallback <GeometryChangedEvent>(OnCanvasSizeChange);

            // This allows user to temporarily type values below the minimum canvas size
            SetDelayOnSizeFieldsEnabled(true);

            // To update the canvas size as user mouse drags the width or height labels
            DisableDelayOnActiveLabelMouseDraggers();

            m_MatchGameViewToggle = root.Q <Toggle>("match-game-view");
            m_MatchGameViewToggle.RegisterValueChangedCallback(OnMatchGameViewModeChanged);
            m_MatchGameViewHelpBox = root.Q <HelpBox>("match-game-view-hint");

            // Background Opacity
            m_ColorOpacityField = root.Q <PercentSlider>("background-color-opacity-field");
            m_ColorOpacityField.RegisterValueChangedCallback(e =>
            {
                settings.ColorModeBackgroundOpacity = e.newValue;
                OnBackgroundOpacityChange(e.newValue);
            });

            m_ImageOpacityField = root.Q <PercentSlider>("background-image-opacity-field");
            m_ImageOpacityField.RegisterValueChangedCallback(e =>
            {
                settings.ImageModeCanvasBackgroundOpacity = e.newValue;
                OnBackgroundOpacityChange(e.newValue);
            });

            m_CameraOpacityField = root.Q <PercentSlider>("background-camera-opacity-field");
            m_CameraOpacityField.RegisterValueChangedCallback(e =>
            {
                settings.CameraModeCanvasBackgroundOpacity = e.newValue;
                OnBackgroundOpacityChange(e.newValue);
            });

            // Setup Background State
            m_BackgroundOptionsFoldout = root.Q <FoldoutWithCheckbox>("canvas-background-foldout");
            m_BackgroundOptionsFoldout.RegisterCheckboxValueChangedCallback(e =>
            {
                settings.EnableCanvasBackground = e.newValue;
                PostSettingsChange();
                ApplyBackgroundOptions();
            });

            // Setup Background Mode
            var backgroundModeType   = typeof(BuilderCanvasBackgroundMode);
            var backgroundModeValues = Enum.GetValues(backgroundModeType)
                                       .OfType <BuilderCanvasBackgroundMode>().Select((v) => v.ToString()).ToList();

            m_BackgroundMode          = root.Q <ToggleButtonStrip>("background-mode-field");
            m_BackgroundMode.enumType = backgroundModeType;
            m_BackgroundMode.choices  = backgroundModeValues;
            m_BackgroundMode.RegisterValueChangedCallback(OnBackgroundModeChange);

            // Color field.
            m_ColorField = root.Q <ColorField>("background-color-field");
            m_ColorField.RegisterValueChangedCallback(OnBackgroundColorChange);

            // Set Image field.
            m_ImageField            = root.Q <ObjectField>("background-image-field");
            m_ImageField.objectType = typeof(Texture2D);
            m_ImageField.RegisterValueChangedCallback(OnBackgroundImageChange);
            m_ImageScaleModeField          = root.Q <ToggleButtonStrip>("background-image-scale-mode-field");
            m_ImageScaleModeField.enumType = typeof(ScaleMode);
            var backgroundScaleModeValues = Enum.GetValues(typeof(ScaleMode))
                                            .OfType <ScaleMode>().Select((v) => BuilderNameUtilities.ConvertCamelToDash(v.ToString())).ToList();

            m_ImageScaleModeField.choices = backgroundScaleModeValues;
            m_ImageScaleModeField.RegisterValueChangedCallback(OnBackgroundImageScaleModeChange);
            m_FitCanvasToImageButton = root.Q <Button>("background-image-fit-canvas-button");
            m_FitCanvasToImageButton.clickable.clicked += FitCanvasToImage;

            // Set Camera field.
            m_CameraField            = root.Q <ObjectField>("background-camera-field");
            m_CameraField.objectType = typeof(Camera);
            m_CameraField.RegisterValueChangedCallback(OnBackgroundCameraChange);

#if !UNITY_2019_4
            SetupEditorExtensionsModeToggle();
#else
            RemoveDocumentSettings();
#endif

            // Control Containers
            m_BackgroundColorModeControls  = root.Q("canvas-background-color-mode-controls");
            m_BackgroundImageModeControls  = root.Q("canvas-background-image-mode-controls");
            m_BackgroundCameraModeControls = root.Q("canvas-background-camera-mode-controls");

            EditorApplication.playModeStateChanged += PlayModeStateChange;
        }
        public BuilderInspectorCanvas(BuilderInspector inspector)
        {
            m_Inspector       = inspector;
            m_Document        = inspector.document;
            m_CanvasInspector = m_Inspector.Q("canvas-inspector");

            var builderWindow = inspector.paneWindow as Builder;

            if (builderWindow == null)
            {
                return;
            }

            m_Canvas = builderWindow.canvas;

            m_CameraModeEnabled = false;

            // Size Fields
            m_CanvasWidth           = root.Q <IntegerField>("canvas-width");
            m_CanvasWidth.isDelayed = true;
            m_CanvasWidth.RegisterValueChangedCallback(OnWidthChange);
            m_CanvasHeight           = root.Q <IntegerField>("canvas-height");
            m_CanvasHeight.isDelayed = true;
            m_CanvasHeight.RegisterValueChangedCallback(OnHeightChange);
            m_Canvas.RegisterCallback <GeometryChangedEvent>(OnCanvasSizeChange);

            // Background Opacity
            m_OpacityField = root.Q <PercentSlider>("background-opacity-field");
            m_OpacityField.RegisterValueChangedCallback(OnBackgroundOpacityChange);

            // Setup Background Mode
            var backgroundModeType   = typeof(BuilderCanvasBackgroundMode);
            var backgroundModeValues = Enum.GetValues(backgroundModeType)
                                       .OfType <BuilderCanvasBackgroundMode>().Select((v) => v.ToString()).ToList();
            var backgroundModeNames = Enum.GetNames(backgroundModeType);

            m_BackgroundMode          = root.Q <ToggleButtonStrip>("background-mode-field");
            m_BackgroundMode.enumType = backgroundModeType;
            m_BackgroundMode.labels   = backgroundModeNames;
            m_BackgroundMode.choices  = backgroundModeValues;
            m_BackgroundMode.RegisterValueChangedCallback(OnBackgroundModeChange);

            // Color field.
            m_ColorField = root.Q <ColorField>("background-color-field");
            m_ColorField.RegisterValueChangedCallback(OnBackgroundColorChange);

            // Set Image field.
            m_ImageField            = root.Q <ObjectField>("background-image-field");
            m_ImageField.objectType = typeof(Texture2D);
            m_ImageField.RegisterValueChangedCallback(OnBackgroundImageChange);
            m_ImageScaleModeField          = root.Q <ToggleButtonStrip>("background-image-scale-mode-field");
            m_ImageScaleModeField.enumType = typeof(ScaleMode);
            var backgroundScaleModeValues = Enum.GetValues(typeof(ScaleMode))
                                            .OfType <ScaleMode>().Select((v) => BuilderNameUtilities.ConvertCamelToDash(v.ToString())).ToList();

            m_ImageScaleModeField.choices = backgroundScaleModeValues;
            m_ImageScaleModeField.RegisterValueChangedCallback(OnBackgroundImageScaleModeChange);
            m_FitCanvasToImageButton = root.Q <Button>("background-image-fit-canvas-button");
            m_FitCanvasToImageButton.clickable.clicked += FitCanvasToImage;

            // Set Camera field.
            m_CameraField            = root.Q <ObjectField>("background-camera-field");
            m_CameraField.objectType = typeof(Camera);
            m_CameraField.RegisterValueChangedCallback(OnBackgroundCameraChange);

            // Control Containers
            m_BackgroundColorModeControls  = root.Q("canvas-background-color-mode-controls");
            m_BackgroundImageModeControls  = root.Q("canvas-background-image-mode-controls");
            m_BackgroundCameraModeControls = root.Q("canvas-background-camera-mode-controls");

            EditorApplication.playModeStateChanged += PlayModeStateChange;
        }