[Linux only] CEF Upgrade to 2785 (#626)

* Force HiDPI to scale factor 1.0 for now on Linux

* Linux only: Changes required for CEF 2785 Integration

* 1) Removed force-device-scale-factor code\n 2) Introduced Delayed resize to repaginate view port content 3) Change the minor version of CEF to 1486

* Removing unused variable.

* Address review comments.

* Reverting the space change.

Author: nethip

Gruntfile.js

@@ -38,7 +38,7 @@ module.exports = function (grunt) {
     }
 
     if (platform === "linux") {
-        cef_version = "3.2704.1414";
+        cef_version = "3.2785.1486";
     }
 
     grunt.initConfig({

appshell/appshell_extensions.js

@@ -942,5 +942,8 @@ if (!appshell.app) {
 
 
     // Alias the appshell object to brackets. This is temporary and should be removed.
-    brackets = appshell;
+    // The following is now moved to Global.js as newer versions of CEF crash upon
+    // eval of this statement.
+    //brackets = appshell;
+    
 })();

appshell/browser/root_window_gtk.cc

@@ -360,13 +360,46 @@ void RootWindowGtk::CreateRootWindow(const CefBrowserSettings& settings) {
   }
 }
 
+// The following function makes sure we repaginate
+// the content once the window is shown first. The
+// problem was that the view port was not getting
+// updated and a fake resize was required for the
+// content to repaginate.
+void DelayedResize(GtkWidget* window_) {
+  if(window_){
+      GtkWindow* window = GTK_WINDOW(window_);
+      GdkWindow* gdk_window = gtk_widget_get_window(window_);
+
+      gint x;
+      gint y;
+      gint width;
+      gint height;
+      gint depth;
+
+      gdk_window_get_geometry (gdk_window,
+                          &x,
+                          &y,
+                          &width,
+                          &height,
+                          &depth);
+
+      // A hack to repaginate the content inside the window.
+      // Nudge the width and height by one pixel, so that the
+      // resize is not noticeable.
+      gdk_window_resize (gdk_window, width + 1, height + 1);
+  }
+}
+
 void RootWindowGtk::OnBrowserCreated(CefRefPtr<CefBrowser> browser) {
   REQUIRE_MAIN_THREAD();
 
   // For popup browsers create the root window once the browser has been
   // created.
   if (is_popup_)
     CreateRootWindow(CefBrowserSettings());
+
+  // Post a message to CEF queue for delated resize.
+  CefPostTask(TID_UI, base::Bind(&DelayedResize, window_));
 }
 
 void RootWindowGtk::OnBrowserWindowDestroyed() {

appshell/client_handler.cpp

@@ -202,7 +202,11 @@ bool ClientHandler::OnDragEnter(CefRefPtr<CefBrowser> browser,
 }
 
 void ClientHandler::OnLoadStart(CefRefPtr<CefBrowser> browser,
-                                CefRefPtr<CefFrame> frame) {
+                                CefRefPtr<CefFrame> frame
+                                #ifdef OS_LINUX
+                                  ,TransitionType transition_type
+                                #endif
+                                ) {
   CEF_REQUIRE_UI_THREAD();
 
   if (m_BrowserId == browser->GetIdentifier() && frame->IsMain()) {

appshell/client_handler.h

@@ -126,7 +126,11 @@ virtual bool OnBeforePopup(CefRefPtr<CefBrowser> browser,
 
   // CefLoadHandler methods
   virtual void OnLoadStart(CefRefPtr<CefBrowser> browser,
-                           CefRefPtr<CefFrame> frame) OVERRIDE;
+                           CefRefPtr<CefFrame> frame
+                    #ifdef OS_LINUX
+                           ,TransitionType transition_type
+                    #endif
+                           ) OVERRIDE;
   virtual void OnLoadEnd(CefRefPtr<CefBrowser> browser,
                          CefRefPtr<CefFrame> frame,
                          int httpStatusCode) OVERRIDE;