unity editor模式下获取当前gameview视图的分辨率

之前也参考过这篇文章 unity editor模式下获取当前gameview视图的分辨率
复杂一些 有时有用 有时没用

最后在有canvas的情况下，想了个方法获得屏幕的分辨率

#if UNITY_EDITOR
int canvasDisplay = RootCanvasTransform.GetComponent().targetDisplay;
            float editorWidth = Display.displays[canvasDisplay].renderingWidth;
            float editorHeight = Display.displays[canvasDisplay].renderingHeight;
#else        

RootCanvasTransform指定那个display才能获得对应的GameView窗口
这个做法在做多屏应用的时候 应该也能获得所需canvas对应的display的分辨率
所以一个全屏扩展图片的做法是

#if UNITY_EDITOR

        int canvasDisplay = RootCanvasTransform.GetComponent().targetDisplay;
        float screenWidth = Display.displays[canvasDisplay].renderingWidth;
        float screenHeight = Display.displays[canvasDisplay].renderingHeight;
#else
        float screenWidth = Screen.currentResolution.width;
        float screenHeight = Screen.currentResolution.height;
#endif
        
        
        ...
        hangerRectTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, screenWidth);
        hangerRectTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, screenHeight);
        ...