public:

typedef cef_paint_element_type_t PaintElementType;

typedef std::vector<CefRect> RectList;

///

// Called to retrieve the root window rectangle in screen coordinates. Return

// true if the rectangle was provided.

///

/*--cef()--*/

virtual bool GetRootScreenRect(CefRefPtr<CefBrowser> browser,

CefRect& rect) { return false; }

///

// Called to retrieve the view rectangle which is relative to screen

// coordinates. Return true if the rectangle was provided.

///

/*--cef()--*/

virtual bool GetViewRect(CefRefPtr<CefBrowser> browser, CefRect& rect) =0;

///

// Called to retrieve the translation from view coordinates to actual screen

// coordinates. Return true if the screen coordinates were provided.

///

/*--cef()--*/

virtual bool GetScreenPoint(CefRefPtr<CefBrowser> browser,

int viewX,

int viewY,

int& screenX,

int& screenY) { return false; }

///

// 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.

///

/*--cef()--*/

virtual bool GetScreenInfo(CefRefPtr<CefBrowser> browser,

CefScreenInfo& screen_info) { return false; }

///

// 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.

///

/*--cef()--*/

virtual void OnPopupShow(CefRefPtr<CefBrowser> browser,

bool show) {}

///

// Called when the browser wants to move or resize the popup widget. |rect|

// contains the new location and size.

///

/*--cef()--*/

virtual void OnPopupSize(CefRefPtr<CefBrowser> browser,

const CefRect& rect) {}

///

// Called when an element should be painted. |type| 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.

///

/*--cef()--*/

virtual void OnPaint(CefRefPtr<CefBrowser> browser,

PaintElementType type,

const RectList& dirtyRects,

const void* buffer,

int width, int height) =0;

///

// Called when the browser window's cursor has changed.

///

/*--cef()--*/

virtual void OnCursorChange(CefRefPtr<CefBrowser> browser,

CefCursorHandle cursor) {}

///

// Called when the scroll offset has changed.

///

/*--cef()--*/

virtual void OnScrollOffsetChanged(CefRefPtr<CefBrowser> browser) {}