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Implement this interface to handle events when window rendering is disabled (off-screen rendering). The methods of this class will be called on the UI thread.

Table of contents:

• Callbacks
  • GetRootScreenRect
  • GetViewRect
  • GetScreenRect
  • GetScreenPoint
  • GetScreenInfo
  • OnPopupShow
  • OnPopupSize
  • OnPaint
  • OnCursorChange
  • OnScrollOffsetChanged

Called to retrieve the root window rectangle in screen coordinates. Return true if the rectangle was provided.

Called to retrieve the view rectangle which is relative to screen coordinates. Return true if the rectangle was provided.

The rect list should contain 4 elements: [x, y, width, height].

Called to retrieve the simulated screen rectangle. Return true if the rectangle was provided.

The rect list should contain 4 elements: [x, y, width, height].

Called to retrieve the translation from view coordinates to actual screen coordinates. Return true if the screen coordinates were provided.

The screenCoordinates list should contain 2 elements: [x, y].

Not yet implemented.

Called to allow the client to fill in the CefScreenInfo object with appropriate values. Return true if the |screen_info| structure has been modified. If the screen info rectangle is left empty the rectangle from GetViewRect will be used. If the rectangle is still empty or invalid popups may not be drawn correctly.

Called when the browser wants to show or hide the popup widget. The popup should be shown if |show| is true and hidden if |show| is false.

Called when the browser wants to move or resize the popup widget. |rect| contains the new location and size.

The rect list should contain 4 elements: [x, y, width, height].

Called when an element should be painted. |paintElementType| indicates whether the element is the view or the popup widget. |buffer| contains the pixel data for the whole image. |dirtyRects| contains the set of rectangles that need to be repainted. On Windows |buffer| will be width*height*4 bytes in size and represents a BGRA image with an upper-left origin. The BrowserSettings.animation_frame_rate value controls the rate at which this method is called.

paintElementType is one of:

cefpython.PET_VIEW
cefpython.PET_POPUP

dirtyRects is a list of rects: [[x, y, width, height], [..]]

Called when the browser window's cursor has changed.

CursorHandle is an int pointer.

Called when the scroll offset has changed.