org.cef.handler

接口 CefRenderHandler

所有已知实现类:

CefClient, CefRenderHandlerAdapter

public interface CefRenderHandler

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

方法概要

方法

限定符和类型	方法和说明
Point	getScreenPoint(CefBrowser browser, Point viewPoint) Retrieve the screen point for the specified view point.
Rectangle	getViewRect(CefBrowser browser) Retrieve the view rectangle.
void	onCursorChange(CefBrowser browser, int cursor) Handle cursor changes.
void	onPaint(CefBrowser browser, boolean popup, Rectangle[] dirtyRects, ByteBuffer buffer, int width, int height) Handle painting.
void	onPopupShow(CefBrowser browser, boolean show) Show or hide the popup window.
void	onPopupSize(CefBrowser browser, Rectangle size) Size the popup window.
boolean	startDragging(CefBrowser browser, CefDragData dragData, int mask, int x, int y) Called when the user starts dragging content in the web view.
void	updateDragCursor(CefBrowser browser, int operation) Called when the web view wants to update the mouse cursor during a drag & drop operation.

方法详细资料

getViewRect

Rectangle getViewRect(CefBrowser browser)

Retrieve the view rectangle.

参数:

browser - The browser generating the event.

返回:

The view rectangle.

getScreenPoint

Point getScreenPoint(CefBrowser browser,
                   Point viewPoint)

Retrieve the screen point for the specified view point.

参数:

browser - The browser generating the event.

viewPoint - The point in the view.

返回:

The screen point.

onPopupShow

void onPopupShow(CefBrowser browser,
               boolean show)

Show or hide the popup window.

参数:

browser - The browser generating the event.

show - True if the popup window is being shown.

onPopupSize

void onPopupSize(CefBrowser browser,
               Rectangle size)

Size the popup window.

参数:

browser - The browser generating the event.

size - Size of the popup window.

onPaint

void onPaint(CefBrowser browser,
           boolean popup,
           Rectangle[] dirtyRects,
           ByteBuffer buffer,
           int width,
           int height)

Handle painting.

参数:

browser - The browser generating the event.

popup - True if painting a popup window.

dirtyRects - Array of dirty regions.

buffer - Pixel buffer for the whole window.

width - Width of the buffer.

height - Height of the buffer.

onCursorChange

void onCursorChange(CefBrowser browser,
                  int cursor)

Handle cursor changes.

参数:

browser - The browser generating the event.

cursor - The new cursor.

startDragging

boolean startDragging(CefBrowser browser,
                    CefDragData dragData,
                    int mask,
                    int x,
                    int y)

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. Return false to abort the drag operation. Don't call any of CefBrowser-dragSource*Ended* methods after returning false. Return true to handle the drag operation. Call CefBrowser.dragSourceEndedAt and CefBrowser.ragSourceSystemDragEnded either synchronously or asynchronously to inform the web view that the drag operation has ended.

参数:

browser - The browser generating the event.

dragData - Contextual information about the dragged content

mask - Describes the allowed operation (none, move, copy, link).

x - Coordinate within CefBrowser

y - Coordinate within CefBrowser

返回:

false to abort the drag operation or true to handle the drag operation.

updateDragCursor

void updateDragCursor(CefBrowser browser,
                    int operation)

Called when the web view wants to update the mouse cursor during a drag & drop operation.

参数:

browser - The browser generating the event.

operation - Describes the allowed operation (none, move, copy, link).