Don't refresh the whole top region. Store a list of "dirty rectangles" within the top 50% of the frame. Refresh only those rectangles.
ViewerFrame mode is commonly used in image/video viewers, rendering engines, or UI frameworks where a frame (or “viewer”) needs to refresh dynamically. The “refresh top” action typically forces a reload of the top-level view or container.
You have an IoT dashboard running on a Raspberry Pi with a slow SPI display. A full viewerframe.refresh() takes 500ms, making the UI unusable. viewerframe mode refresh top
scrollTop = 0 doesn't work on iOS. Fix: Scroll the body or use window.scrollTo(0,0) on the frame’s parent. Mobile Safari requires -webkit-overflow-scrolling: touch; .
In a Three.js application, you might create a custom mechanism to simulate this. Don't refresh the whole top region
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intitle:"Live View / - AXIS" (Finds unencrypted Axis communications servers) ViewerFrame mode is commonly used in image/video viewers,
The steps provided should give you a general guide on how to refresh the top in ViewerFrame mode across different software applications. Always refer to your specific software's documentation for precise instructions tailored to its unique interface and features.
Different development environments require distinct approaches to trigger a top-level viewerframe refresh. 1. WebGL and Three.js (Web-Based Rendering)
public void RefreshTopView(ViewerFrame vf) if (vf.HasActiveChildren) // Target the top UI element container UIElement topLayer = vf.GetVisualChild(vf.ChildrenCount - 1); // Force the layout engine to recalculate layout and redraw topLayer.InvalidateVisual(); topLayer.UpdateLayout(); Use code with caution. 3. CSS and Vanilla JavaScript (DOM-Based Frames)
When a browser accesses a URL containing viewerframe?mode=refresh , the Axis web server: a single JPEG snapshot. Delivers that snapshot to the viewer.