在cef中使用自定義協議(scheme)
阿新 • • 發佈:2019-02-22
cancel seh 初始化 dir add virt oms 行程 但是
在谷歌瀏覽器中點擊設置,地址欄裏出現的不是普通網址,而是chrome://settings/
這個地址就是谷歌瀏覽器的自定義scheme,cef也提供了自定義協議手段。主要是通過
以下幾步:
1.繼承一個工廠類MySchemeHandlerFactory : public CefSchemeHandlerFactory
需要包含#include "include/cef_scheme.h"
class MySchemeHandlerFactory : public CefSchemeHandlerFactory { public: virtual CefRefPtr<CefResourceHandler> Create(CefRefPtr<CefBrowser> browser, CefRefPtr<CefFrame> frame, const CefString& scheme_name, CefRefPtr<CefRequest> request) OVERRIDE { // Return a new resource handler instance to handle the request. return new MyResourceHandler(); } private: IMPLEMENT_REFCOUNTING(MySchemeHandlerFactory); };
2.繼承一個資源類class MyResourceHandler : public CefResourceHandler
class MyResourceHandler : public CefResourceHandler { public: MyResourceHandler() {} virtual bool ProcessRequest(CefRefPtr<CefRequest> request, CefRefPtr<CefCallback> callback) OVERRIDE { std::string url = request->GetURL(); //if (strstr(url.c_str(), "handler.html") != NULL) data_ = "hello cef";//返回到頁面中的內容 callback->Continue();//這個一定要有 return true;// } virtual void GetResponseHeaders(CefRefPtr<CefResponse> response, int64& response_length, CefString& redirectUrl) OVERRIDE { response->SetMimeType("text/html"); response->SetStatus(200); response_length = data_.length() ; } virtual void Cancel() OVERRIDE { // Cancel the response... } virtual bool ReadResponse(void* data_out, int bytes_to_read, int& bytes_read, CefRefPtr<CefCallback> callback) OVERRIDE { int size =static_cast<int>(data_.length()); memcpy(data_out, data_.c_str(), size); bytes_read = size; return true; } private: std::string data_; IMPLEMENT_REFCOUNTING(MyResourceHandler); };
3.在初始化cef那幾行代碼後面增加一句
CefRegisterSchemeHandlerFactory("sin", "test", new MySchemeHandlerFactory());
CefSettings settings; CefSettingsTraits::init(&settings); settings.multi_threaded_message_loop = true; CefRefPtr<SimpleApp> app(new SimpleApp); CefInitialize(main_args, settings, app.get(), sandbox_info); //自定義scheme CefRegisterSchemeHandlerFactory("sin", "test", new MySchemeHandlerFactory());
4.我看有的教程裏寫的還要在自定義的CefApp類中修改OnRegisterCustomSchemes函數,增加
registrar->AddCustomScheme("sin", true, false, false, false, true, false);
但是我添加還是不添加都沒有問題,都可以出來。
5.這時,運行程序,在地址欄輸入sin://test之後就會顯示頁面,內容是hello cef
6.在第2步中,如果不註釋if語句if (strstr(url.c_str(), "handler.html") != NULL)
那麽,就需要輸入sin://test/handler.html才能顯示內容hello cef
在cef中使用自定義協議(scheme)