content/browser/frame_host/cross_process_frame_connector.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/browser/frame_host/cross_process_frame_connector.h"
   6
   7 #include "cc/surfaces/surface.h"
   8 #include "cc/surfaces/surface_manager.h"
   9 #include "content/browser/compositor/surface_utils.h"
  10 #include "content/browser/frame_host/frame_tree_node.h"
  11 #include "content/browser/frame_host/render_frame_host_manager.h"
  12 #include "content/browser/frame_host/render_frame_proxy_host.h"
  13 #include "content/browser/frame_host/render_widget_host_view_child_frame.h"
  14 #include "content/browser/renderer_host/render_view_host_impl.h"
  15 #include "content/browser/renderer_host/render_widget_host_impl.h"
  16 #include "content/browser/renderer_host/render_widget_host_view_base.h"
  17 #include "content/common/frame_messages.h"
  18 #include "content/common/gpu/gpu_messages.h"
  19 #include "third_party/WebKit/public/web/WebInputEvent.h"
  20
  21 namespace content {
  22
  23 CrossProcessFrameConnector::CrossProcessFrameConnector(
  24     RenderFrameProxyHost* frame_proxy_in_parent_renderer)
  25     : frame_proxy_in_parent_renderer_(frame_proxy_in_parent_renderer),
  26       view_(NULL),
  27       device_scale_factor_(1) {
  28 }
  29
  30 CrossProcessFrameConnector::~CrossProcessFrameConnector() {
  31   if (view_)
  32     view_->set_cross_process_frame_connector(NULL);
  33 }
  34
  35 bool CrossProcessFrameConnector::OnMessageReceived(const IPC::Message& msg) {
  36   bool handled = true;
  37
  38   IPC_BEGIN_MESSAGE_MAP(CrossProcessFrameConnector, msg)
  39     IPC_MESSAGE_HANDLER(FrameHostMsg_CompositorFrameSwappedACK,
  40                         OnCompositorFrameSwappedACK)
  41     IPC_MESSAGE_HANDLER(FrameHostMsg_ReclaimCompositorResources,
  42                         OnReclaimCompositorResources)
  43     IPC_MESSAGE_HANDLER(FrameHostMsg_ForwardInputEvent, OnForwardInputEvent)
  44     IPC_MESSAGE_HANDLER(FrameHostMsg_InitializeChildFrame,
  45                         OnInitializeChildFrame)
  46     IPC_MESSAGE_HANDLER(FrameHostMsg_SatisfySequence, OnSatisfySequence)
  47     IPC_MESSAGE_HANDLER(FrameHostMsg_RequireSequence, OnRequireSequence)
  48     IPC_MESSAGE_UNHANDLED(handled = false)
  49   IPC_END_MESSAGE_MAP()
  50
  51   return handled;
  52 }
  53
  54 void CrossProcessFrameConnector::set_view(
  55     RenderWidgetHostViewChildFrame* view) {
  56   // Detach ourselves from the previous |view_|.
  57   if (view_)
  58     view_->set_cross_process_frame_connector(NULL);
  59
  60   view_ = view;
  61
  62   // Attach ourselves to the new view and size it appropriately.
  63   if (view_) {
  64     view_->set_cross_process_frame_connector(this);
  65     SetDeviceScaleFactor(device_scale_factor_);
  66     SetSize(child_frame_rect_);
  67   }
  68 }
  69
  70 void CrossProcessFrameConnector::RenderProcessGone() {
  71   frame_proxy_in_parent_renderer_->Send(new FrameMsg_ChildFrameProcessGone(
  72       frame_proxy_in_parent_renderer_->GetRoutingID()));
  73 }
  74
  75 void CrossProcessFrameConnector::ChildFrameCompositorFrameSwapped(
  76     uint32 output_surface_id,
  77     int host_id,
  78     int route_id,
  79     scoped_ptr<cc::CompositorFrame> frame) {
  80   FrameMsg_CompositorFrameSwapped_Params params;
  81   frame->AssignTo(&params.frame);
  82   params.output_surface_id = output_surface_id;
  83   params.producing_route_id = route_id;
  84   params.producing_host_id = host_id;
  85   frame_proxy_in_parent_renderer_->Send(new FrameMsg_CompositorFrameSwapped(
  86       frame_proxy_in_parent_renderer_->GetRoutingID(), params));
  87 }
  88
  89 void CrossProcessFrameConnector::SetChildFrameSurface(
  90     const cc::SurfaceId& surface_id,
  91     const gfx::Size& frame_size,
  92     float scale_factor,
  93     const cc::SurfaceSequence& sequence) {
  94   frame_proxy_in_parent_renderer_->Send(new FrameMsg_SetChildFrameSurface(
  95       frame_proxy_in_parent_renderer_->GetRoutingID(), surface_id, frame_size,
  96       scale_factor, sequence));
  97 }
  98
  99 void CrossProcessFrameConnector::OnSatisfySequence(
 100     const cc::SurfaceSequence& sequence) {
 101   std::vector<uint32_t> sequences;
 102   sequences.push_back(sequence.sequence);
 103   cc::SurfaceManager* manager = GetSurfaceManager();
 104   manager->DidSatisfySequences(sequence.id_namespace, &sequences);
 105 }
 106
 107 void CrossProcessFrameConnector::OnRequireSequence(
 108     const cc::SurfaceId& id,
 109     const cc::SurfaceSequence& sequence) {
 110   cc::SurfaceManager* manager = GetSurfaceManager();
 111   cc::Surface* surface = manager->GetSurfaceForId(id);
 112   if (!surface) {
 113     LOG(ERROR) << "Attempting to require callback on nonexistent surface";
 114     return;
 115   }
 116   surface->AddDestructionDependency(sequence);
 117 }
 118
 119 void CrossProcessFrameConnector::OnCompositorFrameSwappedACK(
 120     const FrameHostMsg_CompositorFrameSwappedACK_Params& params) {
 121   RenderWidgetHostImpl::SendSwapCompositorFrameAck(params.producing_route_id,
 122                                                    params.output_surface_id,
 123                                                    params.producing_host_id,
 124                                                    params.ack);
 125 }
 126
 127 void CrossProcessFrameConnector::OnReclaimCompositorResources(
 128     const FrameHostMsg_ReclaimCompositorResources_Params& params) {
 129   RenderWidgetHostImpl::SendReclaimCompositorResources(params.route_id,
 130                                                        params.output_surface_id,
 131                                                        params.renderer_host_id,
 132                                                        params.ack);
 133 }
 134
 135 void CrossProcessFrameConnector::OnInitializeChildFrame(gfx::Rect frame_rect,
 136                                                         float scale_factor) {
 137   if (scale_factor != device_scale_factor_)
 138     SetDeviceScaleFactor(scale_factor);
 139
 140   if (!frame_rect.size().IsEmpty())
 141     SetSize(frame_rect);
 142 }
 143
 144 gfx::Rect CrossProcessFrameConnector::ChildFrameRect() {
 145   return child_frame_rect_;
 146 }
 147
 148 void CrossProcessFrameConnector::GetScreenInfo(blink::WebScreenInfo* results) {
 149   // Inner WebContents's root FrameTreeNode does not have a parent(), so
 150   // GetRenderWidgetHostView() call below will fail.
 151   // TODO(lazyboy): Fix this.
 152   if (frame_proxy_in_parent_renderer_->frame_tree_node()
 153           ->render_manager()
 154           ->ForInnerDelegate()) {
 155     DCHECK(frame_proxy_in_parent_renderer_->frame_tree_node()->IsMainFrame());
 156     return;
 157   }
 158
 159   RenderWidgetHostView* rwhv =
 160       frame_proxy_in_parent_renderer_->GetRenderWidgetHostView();
 161   if (rwhv)
 162     static_cast<RenderWidgetHostViewBase*>(rwhv)->GetScreenInfo(results);
 163 }
 164
 165 void CrossProcessFrameConnector::OnForwardInputEvent(
 166     const blink::WebInputEvent* event) {
 167   if (!view_)
 168     return;
 169
 170   RenderWidgetHostImpl* child_widget =
 171       RenderWidgetHostImpl::From(view_->GetRenderWidgetHost());
 172   RenderFrameHostManager* manager =
 173       frame_proxy_in_parent_renderer_->frame_tree_node()->render_manager();
 174   RenderWidgetHostImpl* parent_widget =
 175       manager->ForInnerDelegate()
 176           ? manager->GetOuterRenderWidgetHostForKeyboardInput()
 177           : frame_proxy_in_parent_renderer_->GetRenderViewHost();
 178
 179   if (blink::WebInputEvent::isKeyboardEventType(event->type)) {
 180     if (!parent_widget->GetLastKeyboardEvent())
 181       return;
 182     NativeWebKeyboardEvent keyboard_event(
 183         *parent_widget->GetLastKeyboardEvent());
 184     child_widget->ForwardKeyboardEvent(keyboard_event);
 185     return;
 186   }
 187
 188   if (blink::WebInputEvent::isMouseEventType(event->type)) {
 189     child_widget->ForwardMouseEvent(
 190         *static_cast<const blink::WebMouseEvent*>(event));
 191     return;
 192   }
 193
 194   if (event->type == blink::WebInputEvent::MouseWheel) {
 195     child_widget->ForwardWheelEvent(
 196         *static_cast<const blink::WebMouseWheelEvent*>(event));
 197     return;
 198   }
 199 }
 200
 201 void CrossProcessFrameConnector::SetDeviceScaleFactor(float scale_factor) {
 202   device_scale_factor_ = scale_factor;
 203   // The RenderWidgetHost is null in unit tests.
 204   if (view_ && view_->GetRenderWidgetHost()) {
 205     RenderWidgetHostImpl* child_widget =
 206         RenderWidgetHostImpl::From(view_->GetRenderWidgetHost());
 207     child_widget->NotifyScreenInfoChanged();
 208   }
 209 }
 210
 211 void CrossProcessFrameConnector::SetSize(gfx::Rect frame_rect) {
 212   child_frame_rect_ = frame_rect;
 213   if (view_)
 214     view_->SetSize(frame_rect.size());
 215 }
 216
 217 }  // namespace content