Viewerframe Mode Refresh Top !!exclusive!!

// Example: Forcing a "refresh top" on a viewer frame buffer void refreshViewerFrameTop(FrameBuffer* buffer) // 1. Lock the top region (first 20% of vertical scanlines) Rect topRegion = Rect(0, 0, buffer->width, buffer->height * 0.2); // 2. Invalidate only this region buffer->invalidateRegion(topRegion);

Often used in older AXIS 200, 2400, and 210 series cameras.

The mode parameter typically dictates how the content within that frame behaves. When set to refresh, the system is instructed to bypass cached data and pull a fresh version of the content from the server at a predetermined interval or upon a specific trigger. The Role of the Top Parameter viewerframe mode refresh top

When appended to a camera's IP address, it bypasses the standard web interface to load the "Single View" or "Live" viewing frame directly. Usage Example

Browsers aggressively cache frame data to save bandwidth. A standard refresh might just reload old visual data from the local disk. // Example: Forcing a "refresh top" on a

Sometimes mode=refresh works best when the surrounding indexFrame.shtml or view/view.shtml structure is maintained, rather than accessing the frame directly. Conclusion

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. The mode parameter typically dictates how the content

function triggerDOMRefresh(elementId) const topElement = document.getElementById(elementId); // Temporarily alter transform properties to force GPU re-rasterization topElement.style.transform = 'translateZ(0)'; requestAnimationFrame(() => topElement.style.transform = 'none'; ); Use code with caution. Performance Optimization Checklist