function OnFocus () : void

Description

Called when the window gets keyboard focus.

See Also: OnLostFocus.

Preview your camera in ortographic mode when you select the window.

// Simple script that lets you preview your main camera in Orthographic view
// when selected.

class OrthographicPreviewer extends EditorWindow {
    var renderTexture : RenderTexture;
    var camera = Camera.main;
    @MenuItem("Example/Camera Selector")
    static function Init() {
        var window = GetWindow(OrthographicPreviewer);
        window.Show();
    }
    function Awake () {
        renderTexture = 
            new RenderTexture(position.width, position.height, RenderTextureFormat.ARGB32 );
    }
    function OnInspectorUpdate() {
        this.Repaint();
    }
    function OnGUI() {
        if(GUILayout.Button("Close")) {
            camera.orthographic = false;
            this.Close();
        }
        GUI.DrawTexture(Rect( 0.0f, 50.0f, position.width, position.height), renderTexture);
    }
    function OnFocus() {
        Selection.activeTransform = camera.transform;
        camera.orthographic = true;
    }
    function Update() {
        if(camera != null) {
            camera.targetTexture = renderTexture;
            camera.Render();
            camera.targetTexture = null;    
        }
        if(renderTexture.width != position.width || renderTexture.height != position.height)
            renderTexture = new RenderTexture(position.width, 
                                    position.height, 
                                    RenderTextureFormat.ARGB32 );
    }
    function OnLostFocus() {
        camera.orthographic = false;
    }
}