IRender |
Implement this interface to handle Offscreen Rendering (OSR).
Upstream documentation at http://magpcss.org/ceforum/apidocs3/projects/(default)/CefRenderHandler.html
Namespace: CefSharp.OffScreen
Assembly: CefSharp.OffScreen (in CefSharp.OffScreen.dll) Version: 129.0.110.0 (129.0.110.0)
SyntaxThe IRenderHandler type exposes the following members.
Methods| Name | Description | |
|---|---|---|
 | Dispose | Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources. (Inherited from IDisposable) |
| GetScreenInfo | Called to allow the client to return a ScreenInfo object with appropriate values. If null is returned then the rectangle from GetViewRect will be used. If the rectangle is still empty or invalid popups may not be drawn correctly. |
| GetScreenPoint | Called to retrieve the translation from view coordinates to actual screen coordinates. |
| GetViewRect | Called to retrieve the view rectangle which is relative to screen coordinates. This method must always provide a non-empty rectangle. |
| OnAcceleratedPaint | Called when an element has been rendered to the shared texture handle. This method is only called when SharedTextureEnabled is set to true The underlying implementation uses a pool to deliver frames. As a result, the handle may differ every frame depending on how many frames are in-progress. The handle's resource cannot be cached and cannot be accessed outside of this callback. It should be reopened each time this callback is executed and the contents should be copied to a texture owned by the client application. The contents of acceleratedPaintInfoacceleratedPaintInfo will be released back to the pool after this callback returns. |
| OnCursorChange | Called when the browser's cursor has changed. |
| OnImeCompositionRangeChanged | Called when the IME composition range has changed. |
| OnPaint | Called when an element should be painted. Pixel values passed to this method are scaled relative to view coordinates based on the value of DeviceScaleFactor returned from GetScreenInfo. This method is only called when SharedTextureEnabled is set to false. Called on the CEF UI Thread |
| OnPopupShow | Called when the browser wants to show or hide the popup widget. |
| OnPopupSize | Called when the browser wants to move or resize the popup widget. |
| OnVirtualKeyboardRequested | Called when an on-screen keyboard should be shown or hidden for the specified browser. |
| StartDragging | Called when the user starts dragging content in the web view. Contextual information about the dragged content is supplied by dragData. OS APIs that run a system message loop may be used within the StartDragging call. Don't call any of the IBrowserHost.DragSource*Ended* methods after returning false. Return true to handle the drag operation. Call DragSourceEndedAt(Int32, Int32, DragOperationsMask) and DragSourceSystemDragEnded either synchronously or asynchronously to inform the web view that the drag operation has ended. |
| UpdateDragCursor | Called when the web view wants to update the mouse cursor during a drag & drop operation. |
See Also