Implement "presentation" feature for window.open()

content/browser/web_contents/web_contents_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/web_contents/web_contents_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 1451 matching lines @@
   // to allow it to survive the trip without being hosted.
   base::mac::NSObjectRetain(widget_view->GetNativeView());
 #endif
 }
 
 void WebContentsImpl::ShowCreatedWindow(int route_id,
                                         WindowOpenDisposition disposition,
                                         const gfx::Rect& initial_pos,
                                         bool user_gesture) {
   WebContentsImpl* contents = GetCreatedWindow(route_id);
+
+  gfx::Rect newContentsWindowPos = initial_pos;
+  if (disposition == PRESENTATION_WINDOW) {
+    gfx::Screen* screen = gfx::Screen::GetNativeScreen();
+    gfx::Rect windowBounds;
+    WebContentsView* view = GetView();
+    CHECK(view);
+    view->GetContainerBounds(&windowBounds);
+    gfx::Display thisDisplay = screen->GetDisplayMatching(windowBounds);
+
+    std::vector<gfx::Display> displays = screen->GetAllDisplays();
+    gfx::Display presentationDisplay;
+    // TODO: Instead of just finding the next different display,
+    // enable a screen selection here.
+    for (std::vector<gfx::Display>::iterator it = displays.begin();
+         it != displays.end();
+         ++it) {
+      if ((*it).id() != thisDisplay.id())
+        presentationDisplay = *it;
+    }
+    if (presentationDisplay.is_valid()) {
+      newContentsWindowPos = presentationDisplay.work_area();
+      newContentsWindowPos.Inset(200, 200);
+    }
+  }
+
   if (contents) {
     WebContentsDelegate* delegate = GetDelegate();
     if (delegate) {
-      delegate->AddNewContents(
-          this, contents, disposition, initial_pos, user_gesture, NULL);
+      delegate->AddNewContents(this,
+                               contents,
+                               disposition,
+                               newContentsWindowPos,
+                               user_gesture,
+                               NULL);
     }
   }
 }
 
 void WebContentsImpl::ShowCreatedWidget(int route_id,
                                         const gfx::Rect& initial_pos) {
   ShowCreatedWidget(route_id, false, initial_pos);
 }
 
 void WebContentsImpl::ShowCreatedFullscreenWidget(int route_id) {
@@ skipping 2272 matching lines @@
 }
 
 void WebContentsImpl::OnFrameRemoved(
     RenderViewHostImpl* render_view_host,
     int64 frame_id) {
    FOR_EACH_OBSERVER(WebContentsObserver, observers_,
                      FrameDetached(render_view_host, frame_id));
 }
 
 }  // namespace content