Changes to content/ to facilitate new zoom extension API

content/renderer/render_thread_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/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <vector>
@@ skipping 155 matching lines @@
 
 const int64 kInitialIdleHandlerDelayMs = 1000;
 const int64 kShortIdleHandlerDelayMs = 1000;
 const int64 kLongIdleHandlerDelayMs = 30*1000;
 const int kIdleCPUUsageThresholdInPercents = 3;
 const int kMinRasterThreads = 1;
 const int kMaxRasterThreads = 64;
 
 // Keep the global RenderThreadImpl in a TLS slot so it is impossible to access
 // incorrectly from the wrong thread.
-base::LazyInstance<base::ThreadLocalPointer<RenderThreadImpl> >
-    lazy_tls = LAZY_INSTANCE_INITIALIZER;
+base::LazyInstance<base::ThreadLocalPointer<RenderThreadImpl> > lazy_tls =
+    LAZY_INSTANCE_INITIALIZER;
 
 class RenderViewZoomer : public RenderViewVisitor {
  public:
   RenderViewZoomer(const std::string& scheme,
                    const std::string& host,
-                   double zoom_level) : scheme_(scheme),
-                                        host_(host),
-                                        zoom_level_(zoom_level) {
-  }
+                   double zoom_level,
+                   const std::set<int>& exceptions)
+      : scheme_(scheme),
+        host_(host),
+        zoom_level_(zoom_level),
+        exceptions_(exceptions) {}
 
   virtual bool Visit(RenderView* render_view) OVERRIDE {
     WebView* webview = render_view->GetWebView();
     WebDocument document = webview->mainFrame()->document();
 
     // Don't set zoom level for full-page plugin since they don't use the same
-    // zoom settings.
-    if (document.isPluginDocument())
+    // zoom settings. RenderViews associated with tabs in special zoom
+    // modes (listed in |exceptions_|) should also not be zoomed.
+    if (document.isPluginDocument() ||
+        exceptions_.count(render_view->GetRoutingID()))
       return true;
     GURL url(document.url());
     // Empty scheme works as wildcard that matches any scheme,
     if ((net::GetHostOrSpecFromURL(url) == host_) &&
         (scheme_.empty() || scheme_ == url.scheme())) {
       webview->setZoomLevel(zoom_level_);
     }
     return true;
   }
 
  private:
   const std::string scheme_;
   const std::string host_;
   const double zoom_level_;
+  const std::set<int> exceptions_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewZoomer);
 };
 
 std::string HostToCustomHistogramSuffix(const std::string& host) {
   if (host == "mail.google.com")
     return ".gmail";
   if (host == "docs.google.com" || host == "drive.google.com")
     return ".docs";
   if (host == "plus.google.com")
@@ skipping 986 matching lines @@
 }
 
 void RenderThreadImpl::DoNotSuspendWebKitSharedTimer() {
   suspend_webkit_shared_timer_ = false;
 }
 
 void RenderThreadImpl::DoNotNotifyWebKitOfModalLoop() {
   notify_webkit_of_modal_loop_ = false;
 }
 
-void RenderThreadImpl::OnSetZoomLevelForCurrentURL(const std::string& scheme,
-                                                   const std::string& host,
-                                                   double zoom_level) {
-  RenderViewZoomer zoomer(scheme, host, zoom_level);
+void RenderThreadImpl::OnSetZoomLevelForCurrentURL(
+    const std::string& scheme,
+    const std::string& host,
+    double zoom_level,
+    const std::set<int>& exceptions) {
+  RenderViewZoomer zoomer(scheme, host, zoom_level, exceptions);
   RenderView::ForEach(&zoomer);
 }
 
 bool RenderThreadImpl::OnControlMessageReceived(const IPC::Message& msg) {
   ObserverListBase<RenderProcessObserver>::Iterator it(observers_);
   RenderProcessObserver* observer;
   while ((observer = it.GetNext()) != NULL) {
     if (observer->OnControlMessageReceived(msg))
       return true;
   }
@@ skipping 290 matching lines @@
   hidden_widget_count_--;
 
   if (!GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden()) {
     return;
   }
 
   ScheduleIdleHandler(kLongIdleHandlerDelayMs);
 }
 
 }  // namespace content