Implement accessibility enhancements (issue #1217)

- Add new CefBrowserHost::SetAccessibilityState method for toggling
  accessibility state when readers are detected by the client.
- Add new CefAccessibilityHandler interface for the delivery of
  accessibility notifications to windowless (OSR) clients.
- Fix delivery of CefFocusHandler callbacks to windowless clients.
- cefclient: Add example windowless accessibility implementation on Windows and macOS.
- cefclient: Automatically detect screen readers on Windows and macOS.
This commit is contained in:
Nishant Kaushik
2017-05-12 18:28:25 +00:00
committed by Marshall Greenblatt
parent 64fcfa6068
commit 816f700d3e
51 changed files with 3476 additions and 8 deletions

View File

@ -10,6 +10,7 @@
// for more information.
//
#include "libcef_dll/cpptoc/accessibility_handler_cpptoc.h"
#include "libcef_dll/cpptoc/render_handler_cpptoc.h"
#include "libcef_dll/ctocpp/browser_ctocpp.h"
#include "libcef_dll/ctocpp/drag_data_ctocpp.h"
@ -19,6 +20,22 @@ namespace {
// MEMBER FUNCTIONS - Body may be edited by hand.
cef_accessibility_handler_t* CEF_CALLBACK render_handler_get_accessibility_handler(
struct _cef_render_handler_t* self) {
// AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
DCHECK(self);
if (!self)
return NULL;
// Execute
CefRefPtr<CefAccessibilityHandler> _retval = CefRenderHandlerCppToC::Get(
self)->GetAccessibilityHandler();
// Return type: refptr_same
return CefAccessibilityHandlerCppToC::Wrap(_retval);
}
int CEF_CALLBACK render_handler_get_root_screen_rect(
struct _cef_render_handler_t* self, cef_browser_t* browser,
cef_rect_t* rect) {
@ -396,6 +413,8 @@ void CEF_CALLBACK render_handler_on_ime_composition_range_changed(
// CONSTRUCTOR - Do not edit by hand.
CefRenderHandlerCppToC::CefRenderHandlerCppToC() {
GetStruct()->get_accessibility_handler =
render_handler_get_accessibility_handler;
GetStruct()->get_root_screen_rect = render_handler_get_root_screen_rect;
GetStruct()->get_view_rect = render_handler_get_view_rect;
GetStruct()->get_screen_point = render_handler_get_screen_point;