Implement basic support for CEF.

[nageru] / nageru_cef_app.cpp

diff --git a/nageru_cef_app.cpp b/nageru_cef_app.cpp
new file mode 100644 (file)
index 0000000..bd8b9d6
--- /dev/null
+++ b/nageru_cef_app.cpp
@@ -0,0 +1,76 @@
+#include <cef_app.h>
+#include <cef_browser.h>
+#include <cef_client.h>
+#include <cef_version.h>
+#include <QTimer>
+#include <QWidget>
+
+#include "nageru_cef_app.h"
+
+using namespace std;
+
+void NageruCefApp::OnBeforeCommandLineProcessing(
+       const CefString& process_type,
+       CefRefPtr<CefCommandLine> command_line)
+{
+       command_line->AppendSwitch("disable-gpu");
+       command_line->AppendSwitch("disable-gpu-compositing");
+       command_line->AppendSwitch("enable-begin-frame-scheduling");
+}
+
+void NageruCefApp::OnBrowserDestroyed(CefRefPtr<CefBrowser> browser)
+{
+       lock_guard<mutex> lock(cef_mutex);
+       pending_browsers.erase(browser.get());
+       browser_closed_cond.notify_all();
+}
+
+void NageruCefApp::initialize_cef()
+{
+       unique_lock<mutex> lock(cef_mutex);
+       if (cef_thread_refcount++ == 0) {
+               cef_thread = thread(&NageruCefApp::cef_thread_func, this);
+       }
+       cef_initialized_cond.wait(lock, [this]{ return cef_initialized; });
+}
+
+void NageruCefApp::close_browser(CefRefPtr<CefBrowser> browser)
+{
+       unique_lock<mutex> lock(cef_mutex);
+       CefBrowser *raw_ptr = browser.get();
+       pending_browsers.insert(raw_ptr);
+       browser->GetHost()->CloseBrowser(/*force_close=*/true);
+       browser = nullptr;
+       browser_closed_cond.wait(lock, [this, raw_ptr]{ return pending_browsers.count(raw_ptr) != 0; });
+}
+
+void NageruCefApp::unref_cef()
+{
+       unique_lock<mutex> lock(cef_mutex);
+       if (--cef_thread_refcount == 0) {
+               CefPostTask(TID_UI, new CEFTaskAdapter(&CefQuitMessageLoop));
+               cef_thread.join();
+       }
+}
+
+void NageruCefApp::cef_thread_func()
+{
+       CefMainArgs main_args;
+       CefSettings settings;
+       //settings.log_severity = LOGSEVERITY_VERBOSE;
+       settings.windowless_rendering_enabled = true;
+       settings.no_sandbox = true;
+       settings.command_line_args_disabled = false;
+       CefInitialize(main_args, settings, this, nullptr);
+
+       {
+               lock_guard<mutex> lock(cef_mutex);
+               cef_initialized = true;
+       }
+       cef_initialized_cond.notify_all();
+
+       CefRunMessageLoop();
+
+       CefShutdown();
+}
+