Make new-style page scale work on Android.

content/browser/android/content_view_core_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/android/content_view_core_impl.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
+#include "base/command_line.h"
 #include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "base/utf_string_conversions.h"
 #include "cc/layer.h"
 #include "content/browser/android/interstitial_page_delegate_android.h"
 #include "content/browser/android/load_url_params.h"
 #include "content/browser/android/touch_point.h"
 #include "content/browser/renderer_host/java/java_bound_object.h"
 #include "content/browser/renderer_host/java/java_bridge_dispatcher_host_manager.h"
 #include "content/browser/renderer_host/compositor_impl_android.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_android.h"
 #include "content/browser/ssl/ssl_host_state.h"
 #include "content/browser/web_contents/interstitial_page_impl.h"
 #include "content/browser/web_contents/navigation_controller_impl.h"
 #include "content/browser/web_contents/navigation_entry_impl.h"
 #include "content/browser/web_contents/web_contents_view_android.h"
 #include "content/common/android/device_info.h"
 #include "content/common/view_messages.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/favicon_status.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/content_client.h"
+#include "content/public/common/content_switches.h"
 #include "content/public/common/page_transition_types.h"
 #include "jni/ContentViewCore_jni.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebBindings.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/android/WebInputEventFactory.h"
 #include "ui/gfx/android/java_bitmap.h"
 #include "ui/gfx/android/window_android.h"
 #include "ui/gfx/screen.h"
+#include "ui/gfx/size_conversions.h"
+#include "ui/gfx/size_f.h"
 #include "webkit/glue/webmenuitem.h"
 #include "webkit/user_agent/user_agent_util.h"
 
 using base::android::AttachCurrentThread;
 using base::android::ConvertJavaStringToUTF16;
 using base::android::ConvertJavaStringToUTF8;
 using base::android::ConvertUTF16ToJavaString;
 using base::android::ConvertUTF8ToJavaString;
 using base::android::GetClass;
 using base::android::HasField;
@@ skipping 103 matching lines @@
   // process.  We treat it like the tab is crashed. If the content is loaded
   // when the tab is shown, tab_crashed_ will be reset.  Since
   // RenderWidgetHostView is associated with the lifetime of the renderer
   // process, we use it to test whether there is a renderer process.
   tab_crashed_ = !(web_contents->GetRenderWidgetHostView());
 
   // TODO(leandrogracia): make use of the hardware_accelerated argument.
 
   InitJNI(env, obj);
 
-  if (!gfx::Screen::GetNativeScreen()->IsDIPEnabled()) {
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableCssTransformPinch)) {
     dpi_scale_ = 1;
   } else {
     scoped_ptr<content::DeviceInfo> device_info(new content::DeviceInfo());
     dpi_scale_ = device_info->GetDPIScale();
   }
 
   notification_registrar_.Add(this,
                               NOTIFICATION_EXECUTE_JAVASCRIPT_RESULT,
                               NotificationService::AllSources());
 
@@ skipping 419 matching lines @@
   ScopedJavaLocalRef<jobject> java_bitmap =
       gfx::ConvertToJavaBitmap(&zoomed_bitmap);
   DCHECK(!java_bitmap.is_null());
 
   Java_ContentViewCore_showDisambiguationPopup(env,
                                                obj.obj(),
                                                rect_object.obj(),
                                                java_bitmap.obj());
 }
 
-gfx::Rect ContentViewCoreImpl::GetBounds() const {
+gfx::Size ContentViewCoreImpl::GetPhysicalSize() const {
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> j_obj = java_ref_.get(env);
   if (j_obj.is_null())
-    return gfx::Rect();
-  return gfx::Rect(Java_ContentViewCore_getWidth(env, j_obj.obj()),
+    return gfx::Size();
+  return gfx::Size(Java_ContentViewCore_getWidth(env, j_obj.obj()),
                    Java_ContentViewCore_getHeight(env, j_obj.obj()));
 }
 
+gfx::Size ContentViewCoreImpl::GetDIPSize() const {
+  return gfx::ToCeiledSize(gfx::ScaleSize(GetPhysicalSize(), 1 / DpiScale()));
+}
+
 void ContentViewCoreImpl::AttachLayer(scoped_refptr<cc::Layer> layer) {
   root_layer_->addChild(layer);
 }
 
 void ContentViewCoreImpl::RemoveLayer(scoped_refptr<cc::Layer> layer) {
   layer->removeFromParent();
 }
 
 void ContentViewCoreImpl::DidProduceRendererFrame() {
   renderer_frame_pending_ = true;
@@ skipping 720 matching lines @@
   if (!HasField(env, clazz, "mNativeContentViewCore", "I")) {
     DLOG(ERROR) << "Unable to find ContentView.mNativeContentViewCore!";
     return false;
   }
   g_native_content_view = GetFieldID(env, clazz, "mNativeContentViewCore", "I");
 
   return RegisterNativesImpl(env) >= 0;
 }
 
 }  // namespace content