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cef/libcef/browser/osr/render_widget_host_view_osr.cc

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// Copyright (c) 2014 The Chromium Embedded Framework Authors.
// Portions 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 "libcef/browser/osr/render_widget_host_view_osr.h"
#include <stdint.h>
#include <utility>
#include "libcef/browser/browser_host_impl.h"
#include "libcef/browser/osr/osr_util.h"
#include "libcef/browser/osr/software_output_device_osr.h"
#include "libcef/browser/thread_util.h"
#include "base/callback_helpers.h"
#include "base/command_line.h"
#include "base/memory/ptr_util.h"
#include "cc/base/switches.h"
#include "cc/output/copy_output_request.h"
#include "cc/scheduler/delay_based_time_source.h"
#include "components/display_compositor/gl_helper.h"
#include "content/browser/bad_message.h"
#include "content/browser/compositor/image_transport_factory.h"
#include "content/browser/renderer_host/dip_util.h"
#include "content/browser/renderer_host/render_widget_host_delegate.h"
#include "content/browser/renderer_host/render_widget_host_impl.h"
#include "content/browser/renderer_host/resize_lock.h"
#include "content/common/view_messages.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/context_factory.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/render_widget_host_view_frame_subscriber.h"
#include "content/public/common/content_switches.h"
#include "third_party/WebKit/public/platform/WebScreenInfo.h"
#include "ui/gfx/geometry/dip_util.h"
#include "ui/gfx/geometry/size_conversions.h"
#include "ui/gfx/image/image_skia_operations.h"
namespace {
const float kDefaultScaleFactor = 1.0;
// The maximum number of retry counts if frame capture fails.
const int kFrameRetryLimit = 2;
static blink::WebScreenInfo webScreenInfoFrom(const CefScreenInfo& src) {
blink::WebScreenInfo webScreenInfo;
webScreenInfo.deviceScaleFactor = src.device_scale_factor;
webScreenInfo.depth = src.depth;
webScreenInfo.depthPerComponent = src.depth_per_component;
webScreenInfo.isMonochrome = src.is_monochrome ? true : false;
webScreenInfo.rect = blink::WebRect(src.rect.x, src.rect.y,
src.rect.width, src.rect.height);
webScreenInfo.availableRect = blink::WebRect(src.available_rect.x,
src.available_rect.y,
src.available_rect.width,
src.available_rect.height);
return webScreenInfo;
}
#if !defined(OS_MACOSX)
// When accelerated compositing is enabled and a widget resize is pending,
// we delay further resizes of the UI. The following constant is the maximum
// length of time that we should delay further UI resizes while waiting for a
// resized frame from a renderer.
const int kResizeLockTimeoutMs = 67;
// Used to prevent further resizes while a resize is pending.
class CefResizeLock : public content::ResizeLock {
public:
CefResizeLock(CefRenderWidgetHostViewOSR* host,
const gfx::Size new_size,
bool defer_compositor_lock,
double timeout)
: ResizeLock(new_size, defer_compositor_lock),
host_(host),
cancelled_(false),
weak_ptr_factory_(this) {
DCHECK(host_);
host_->HoldResize();
CEF_POST_DELAYED_TASK(
CEF_UIT,
base::Bind(&CefResizeLock::CancelLock,
weak_ptr_factory_.GetWeakPtr()),
timeout);
}
~CefResizeLock() override {
CancelLock();
}
bool GrabDeferredLock() override {
return ResizeLock::GrabDeferredLock();
}
void UnlockCompositor() override {
ResizeLock::UnlockCompositor();
compositor_lock_ = NULL;
}
protected:
void LockCompositor() override {
ResizeLock::LockCompositor();
compositor_lock_ = host_->GetCompositor()->GetCompositorLock();
}
void CancelLock() {
if (cancelled_)
return;
cancelled_ = true;
UnlockCompositor();
host_->ReleaseResize();
}
private:
CefRenderWidgetHostViewOSR* host_;
scoped_refptr<ui::CompositorLock> compositor_lock_;
bool cancelled_;
base::WeakPtrFactory<CefResizeLock> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(CefResizeLock);
};
#endif // !defined(OS_MACOSX)
} // namespace
// Used for managing copy requests when GPU compositing is enabled. Based on
// RendererOverridesHandler::InnerSwapCompositorFrame and
// DelegatedFrameHost::CopyFromCompositingSurface.
class CefCopyFrameGenerator {
public:
CefCopyFrameGenerator(int frame_rate_threshold_ms,
CefRenderWidgetHostViewOSR* view)
: frame_rate_threshold_ms_(frame_rate_threshold_ms),
view_(view),
frame_pending_(false),
frame_in_progress_(false),
frame_retry_count_(0),
weak_ptr_factory_(this) {
}
void GenerateCopyFrame(
bool force_frame,
const gfx::Rect& damage_rect) {
if (force_frame && !frame_pending_)
frame_pending_ = true;
// No frame needs to be generated at this time.
if (!frame_pending_)
return;
// Keep track of |damage_rect| for when the next frame is generated.
if (!damage_rect.IsEmpty())
pending_damage_rect_.Union(damage_rect);
// Don't attempt to generate a frame while one is currently in-progress.
if (frame_in_progress_)
return;
frame_in_progress_ = true;
// Don't exceed the frame rate threshold.
const int64_t frame_rate_delta =
(base::TimeTicks::Now() - frame_start_time_).InMilliseconds();
if (frame_rate_delta < frame_rate_threshold_ms_) {
// Generate the frame after the necessary time has passed.
CEF_POST_DELAYED_TASK(CEF_UIT,
base::Bind(&CefCopyFrameGenerator::InternalGenerateCopyFrame,
weak_ptr_factory_.GetWeakPtr()),
frame_rate_threshold_ms_ - frame_rate_delta);
return;
}
InternalGenerateCopyFrame();
}
bool frame_pending() const { return frame_pending_; }
void set_frame_rate_threshold_ms(int frame_rate_threshold_ms) {
frame_rate_threshold_ms_ = frame_rate_threshold_ms;
}
private:
void InternalGenerateCopyFrame() {
frame_pending_ = false;
frame_start_time_ = base::TimeTicks::Now();
if (!view_->render_widget_host())
return;
const gfx::Rect damage_rect = pending_damage_rect_;
pending_damage_rect_.SetRect(0, 0, 0, 0);
// The below code is similar in functionality to
// DelegatedFrameHost::CopyFromCompositingSurface but we reuse the same
// SkBitmap in the GPU codepath and avoid scaling where possible.
std::unique_ptr<cc::CopyOutputRequest> request =
cc::CopyOutputRequest::CreateRequest(base::Bind(
&CefCopyFrameGenerator::CopyFromCompositingSurfaceHasResult,
weak_ptr_factory_.GetWeakPtr(),
damage_rect));
request->set_area(gfx::Rect(view_->GetPhysicalBackingSize()));
view_->GetRootLayer()->RequestCopyOfOutput(std::move(request));
}
void CopyFromCompositingSurfaceHasResult(
const gfx::Rect& damage_rect,
std::unique_ptr<cc::CopyOutputResult> result) {
if (result->IsEmpty() || result->size().IsEmpty() ||
!view_->render_widget_host()) {
OnCopyFrameCaptureFailure(damage_rect);
return;
}
if (result->HasTexture()) {
PrepareTextureCopyOutputResult(damage_rect, std::move(result));
return;
}
DCHECK(result->HasBitmap());
PrepareBitmapCopyOutputResult(damage_rect, std::move(result));
}
void PrepareTextureCopyOutputResult(
const gfx::Rect& damage_rect,
std::unique_ptr<cc::CopyOutputResult> result) {
DCHECK(result->HasTexture());
base::ScopedClosureRunner scoped_callback_runner(
base::Bind(&CefCopyFrameGenerator::OnCopyFrameCaptureFailure,
weak_ptr_factory_.GetWeakPtr(),
damage_rect));
const gfx::Size& result_size = result->size();
SkIRect bitmap_size;
if (bitmap_)
bitmap_->getBounds(&bitmap_size);
if (!bitmap_ ||
bitmap_size.width() != result_size.width() ||
bitmap_size.height() != result_size.height()) {
// Create a new bitmap if the size has changed.
bitmap_.reset(new SkBitmap);
bitmap_->allocN32Pixels(result_size.width(),
result_size.height(),
true);
if (bitmap_->drawsNothing())
return;
}
content::ImageTransportFactory* factory =
content::ImageTransportFactory::GetInstance();
display_compositor::GLHelper* gl_helper = factory->GetGLHelper();
if (!gl_helper)
return;
std::unique_ptr<SkAutoLockPixels> bitmap_pixels_lock(
new SkAutoLockPixels(*bitmap_));
uint8_t* pixels = static_cast<uint8_t*>(bitmap_->getPixels());
cc::TextureMailbox texture_mailbox;
std::unique_ptr<cc::SingleReleaseCallback> release_callback;
result->TakeTexture(&texture_mailbox, &release_callback);
DCHECK(texture_mailbox.IsTexture());
if (!texture_mailbox.IsTexture())
return;
ignore_result(scoped_callback_runner.Release());
gl_helper->CropScaleReadbackAndCleanMailbox(
texture_mailbox.mailbox(),
texture_mailbox.sync_token(),
result_size,
gfx::Rect(result_size),
result_size,
pixels,
kN32_SkColorType,
base::Bind(
&CefCopyFrameGenerator::CopyFromCompositingSurfaceFinishedProxy,
weak_ptr_factory_.GetWeakPtr(),
base::Passed(&release_callback),
damage_rect,
base::Passed(&bitmap_),
base::Passed(&bitmap_pixels_lock)),
display_compositor::GLHelper::SCALER_QUALITY_FAST);
}
static void CopyFromCompositingSurfaceFinishedProxy(
base::WeakPtr<CefCopyFrameGenerator> generator,
std::unique_ptr<cc::SingleReleaseCallback> release_callback,
const gfx::Rect& damage_rect,
std::unique_ptr<SkBitmap> bitmap,
std::unique_ptr<SkAutoLockPixels> bitmap_pixels_lock,
bool result) {
// This method may be called after the view has been deleted.
gpu::SyncToken sync_token;
if (result) {
display_compositor::GLHelper* gl_helper =
content::ImageTransportFactory::GetInstance()->GetGLHelper();
if (gl_helper)
gl_helper->GenerateSyncToken(&sync_token);
}
const bool lost_resource = !sync_token.HasData();
release_callback->Run(sync_token, lost_resource);
if (generator) {
generator->CopyFromCompositingSurfaceFinished(
damage_rect, std::move(bitmap), std::move(bitmap_pixels_lock),
result);
} else {
bitmap_pixels_lock.reset();
bitmap.reset();
}
}
void CopyFromCompositingSurfaceFinished(
const gfx::Rect& damage_rect,
std::unique_ptr<SkBitmap> bitmap,
std::unique_ptr<SkAutoLockPixels> bitmap_pixels_lock,
bool result) {
// Restore ownership of the bitmap to the view.
DCHECK(!bitmap_);
bitmap_ = std::move(bitmap);
if (result) {
OnCopyFrameCaptureSuccess(damage_rect, *bitmap_,
std::move(bitmap_pixels_lock));
} else {
bitmap_pixels_lock.reset();
OnCopyFrameCaptureFailure(damage_rect);
}
}
void PrepareBitmapCopyOutputResult(
const gfx::Rect& damage_rect,
std::unique_ptr<cc::CopyOutputResult> result) {
DCHECK(result->HasBitmap());
std::unique_ptr<SkBitmap> source = result->TakeBitmap();
DCHECK(source);
if (source) {
std::unique_ptr<SkAutoLockPixels> bitmap_pixels_lock(
new SkAutoLockPixels(*source));
OnCopyFrameCaptureSuccess(damage_rect, *source,
std::move(bitmap_pixels_lock));
} else {
OnCopyFrameCaptureFailure(damage_rect);
}
}
void OnCopyFrameCaptureFailure(
const gfx::Rect& damage_rect) {
// Retry with the same |damage_rect|.
pending_damage_rect_.Union(damage_rect);
const bool force_frame = (++frame_retry_count_ <= kFrameRetryLimit);
OnCopyFrameCaptureCompletion(force_frame);
}
void OnCopyFrameCaptureSuccess(
const gfx::Rect& damage_rect,
const SkBitmap& bitmap,
std::unique_ptr<SkAutoLockPixels> bitmap_pixels_lock) {
view_->OnPaint(damage_rect, bitmap.width(), bitmap.height(),
bitmap.getPixels());
bitmap_pixels_lock.reset();
// Reset the frame retry count on successful frame generation.
if (frame_retry_count_ > 0)
frame_retry_count_ = 0;
OnCopyFrameCaptureCompletion(false);
}
void OnCopyFrameCaptureCompletion(bool force_frame) {
frame_in_progress_ = false;
if (frame_pending_) {
// Another frame was requested while the current frame was in-progress.
// Generate the pending frame now.
CEF_POST_TASK(CEF_UIT,
base::Bind(&CefCopyFrameGenerator::GenerateCopyFrame,
weak_ptr_factory_.GetWeakPtr(),
force_frame,
gfx::Rect()));
}
}
int frame_rate_threshold_ms_;
CefRenderWidgetHostViewOSR* view_;
base::TimeTicks frame_start_time_;
bool frame_pending_;
bool frame_in_progress_;
int frame_retry_count_;
std::unique_ptr<SkBitmap> bitmap_;
gfx::Rect pending_damage_rect_;
base::WeakPtrFactory<CefCopyFrameGenerator> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(CefCopyFrameGenerator);
};
// Used to control the VSync rate in subprocesses when BeginFrame scheduling is
// enabled.
class CefBeginFrameTimer : public cc::DelayBasedTimeSourceClient {
public:
CefBeginFrameTimer(int frame_rate_threshold_ms,
const base::Closure& callback)
: callback_(callback) {
time_source_.reset(new cc::DelayBasedTimeSource(
content::BrowserThread::GetTaskRunnerForThread(CEF_UIT).get()));
time_source_->SetTimebaseAndInterval(
base::TimeTicks(),
base::TimeDelta::FromMilliseconds(frame_rate_threshold_ms));
time_source_->SetClient(this);
}
void SetActive(bool active) {
time_source_->SetActive(active);
}
bool IsActive() const {
return time_source_->Active();
}
void SetFrameRateThresholdMs(int frame_rate_threshold_ms) {
time_source_->SetTimebaseAndInterval(
base::TimeTicks::Now(),
base::TimeDelta::FromMilliseconds(frame_rate_threshold_ms));
}
private:
// cc::TimerSourceClient implementation.
void OnTimerTick() override {
callback_.Run();
}
const base::Closure callback_;
std::unique_ptr<cc::DelayBasedTimeSource> time_source_;
DISALLOW_COPY_AND_ASSIGN(CefBeginFrameTimer);
};
CefRenderWidgetHostViewOSR::CefRenderWidgetHostViewOSR(
bool transparent,
content::RenderWidgetHost* widget,
CefRenderWidgetHostViewOSR* parent_host_view)
: transparent_(transparent),
scale_factor_(kDefaultScaleFactor),
frame_rate_threshold_ms_(0),
#if !defined(OS_MACOSX)
compositor_widget_(gfx::kNullAcceleratedWidget),
delegated_frame_host_(new content::DelegatedFrameHost(this)),
#endif
software_output_device_(NULL),
hold_resize_(false),
pending_resize_(false),
render_widget_host_(content::RenderWidgetHostImpl::From(widget)),
has_parent_(parent_host_view != NULL),
parent_host_view_(parent_host_view),
popup_host_view_(NULL),
child_host_view_(NULL),
is_showing_(!render_widget_host_->is_hidden()),
is_destroyed_(false),
is_scroll_offset_changed_pending_(false),
#if defined(OS_MACOSX)
text_input_context_osr_mac_(NULL),
#endif
weak_ptr_factory_(this) {
DCHECK(render_widget_host_);
render_widget_host_->SetView(this);
// CefBrowserHostImpl might not be created at this time for popups.
if (content::RenderViewHost::From(render_widget_host_)) {
browser_impl_ = CefBrowserHostImpl::GetBrowserForHost(
content::RenderViewHost::From(render_widget_host_));
}
#if !defined(OS_MACOSX)
root_layer_.reset(new ui::Layer(ui::LAYER_SOLID_COLOR));
#endif
PlatformCreateCompositorWidget();
#if !defined(OS_MACOSX)
// On OS X the ui::Compositor is created/owned by the platform view.
compositor_.reset(
new ui::Compositor(content::GetContextFactory(),
base::ThreadTaskRunnerHandle::Get()));
compositor_->SetAcceleratedWidget(compositor_widget_);
compositor_->SetDelegate(this);
compositor_->SetRootLayer(root_layer_.get());
#endif
if (browser_impl_.get())
ResizeRootLayer();
}
CefRenderWidgetHostViewOSR::~CefRenderWidgetHostViewOSR() {
#if defined(OS_MACOSX)
if (is_showing_)
browser_compositor_->SetRenderWidgetHostIsHidden(true);
#else
// Marking the DelegatedFrameHost as removed from the window hierarchy is
// necessary to remove all connections to its old ui::Compositor.
if (is_showing_)
delegated_frame_host_->WasHidden();
delegated_frame_host_->ResetCompositor();
#endif
PlatformDestroyCompositorWidget();
if (copy_frame_generator_.get())
copy_frame_generator_.reset(NULL);
#if !defined(OS_MACOSX)
delegated_frame_host_.reset(NULL);
compositor_.reset(NULL);
root_layer_.reset(NULL);
#endif
DCHECK(parent_host_view_ == NULL);
DCHECK(popup_host_view_ == NULL);
DCHECK(child_host_view_ == NULL);
DCHECK(guest_host_views_.empty());
}
// Called for full-screen widgets.
void CefRenderWidgetHostViewOSR::InitAsChild(gfx::NativeView parent_view) {
DCHECK(parent_host_view_);
browser_impl_ = parent_host_view_->browser_impl();
DCHECK(browser_impl_.get());
if (parent_host_view_->child_host_view_) {
// Cancel the previous popup widget.
parent_host_view_->child_host_view_->CancelWidget();
}
parent_host_view_->set_child_host_view(this);
// The parent view should not render while the full-screen view exists.
parent_host_view_->Hide();
ResizeRootLayer();
Show();
}
content::RenderWidgetHost*
CefRenderWidgetHostViewOSR::GetRenderWidgetHost() const {
return render_widget_host_;
}
void CefRenderWidgetHostViewOSR::SetSize(const gfx::Size& size) {
}
void CefRenderWidgetHostViewOSR::SetBounds(const gfx::Rect& rect) {
}
gfx::Vector2dF CefRenderWidgetHostViewOSR::GetLastScrollOffset() const {
return last_scroll_offset_;
}
gfx::NativeView CefRenderWidgetHostViewOSR::GetNativeView() const {
return gfx::NativeView();
}
gfx::NativeViewAccessible
CefRenderWidgetHostViewOSR::GetNativeViewAccessible() {
return gfx::NativeViewAccessible();
}
ui::TextInputClient* CefRenderWidgetHostViewOSR::GetTextInputClient() {
return NULL;
}
void CefRenderWidgetHostViewOSR::Focus() {
}
bool CefRenderWidgetHostViewOSR::HasFocus() const {
return false;
}
bool CefRenderWidgetHostViewOSR::IsSurfaceAvailableForCopy() const {
return GetDelegatedFrameHost()->CanCopyToBitmap();
}
void CefRenderWidgetHostViewOSR::Show() {
if (is_showing_)
return;
is_showing_ = true;
#if defined(OS_MACOSX)
browser_compositor_->SetRenderWidgetHostIsHidden(false);
#else
delegated_frame_host_->SetCompositor(compositor_.get());
delegated_frame_host_->WasShown(ui::LatencyInfo());
#endif
if (render_widget_host_)
render_widget_host_->WasShown(ui::LatencyInfo());
}
void CefRenderWidgetHostViewOSR::Hide() {
if (!is_showing_)
return;
if (browser_impl_.get())
browser_impl_->CancelContextMenu();
if (render_widget_host_)
render_widget_host_->WasHidden();
#if defined(OS_MACOSX)
browser_compositor_->SetRenderWidgetHostIsHidden(true);
#else
GetDelegatedFrameHost()->WasHidden();
GetDelegatedFrameHost()->ResetCompositor();
#endif
is_showing_ = false;
}
bool CefRenderWidgetHostViewOSR::IsShowing() {
return is_showing_;
}
gfx::Rect CefRenderWidgetHostViewOSR::GetViewBounds() const {
if (IsPopupWidget())
return popup_position_;
if (!browser_impl_.get())
return gfx::Rect();
CefRect rc;
CefRefPtr<CefRenderHandler> handler =
browser_impl_->GetClient()->GetRenderHandler();
if (handler.get())
handler->GetViewRect(browser_impl_.get(), rc);
return gfx::Rect(rc.x, rc.y, rc.width, rc.height);
}
void CefRenderWidgetHostViewOSR::SetBackgroundColor(SkColor color) {
if (transparent_)
color = SkColorSetARGB(SK_AlphaTRANSPARENT, 0, 0, 0);
content::RenderWidgetHostViewBase::SetBackgroundColor(color);
const bool opaque = !transparent_ && GetBackgroundOpaque();
if (render_widget_host_)
render_widget_host_->SetBackgroundOpaque(opaque);
}
bool CefRenderWidgetHostViewOSR::LockMouse() {
return false;
}
void CefRenderWidgetHostViewOSR::UnlockMouse() {
}
void CefRenderWidgetHostViewOSR::OnSwapCompositorFrame(
uint32_t output_surface_id,
cc::CompositorFrame frame) {
TRACE_EVENT0("libcef", "CefRenderWidgetHostViewOSR::OnSwapCompositorFrame");
if (frame.metadata.root_scroll_offset != last_scroll_offset_) {
last_scroll_offset_ = frame.metadata.root_scroll_offset;
if (!is_scroll_offset_changed_pending_) {
// Send the notification asnychronously.
CEF_POST_TASK(CEF_UIT,
base::Bind(&CefRenderWidgetHostViewOSR::OnScrollOffsetChanged,
weak_ptr_factory_.GetWeakPtr()));
}
}
if (frame.delegated_frame_data) {
if (software_output_device_) {
if (!begin_frame_timer_.get()) {
// If BeginFrame scheduling is enabled SoftwareOutputDevice activity
// will be controlled via OnSetNeedsBeginFrames. Otherwise, activate
// the SoftwareOutputDevice now (when the first frame is generated).
software_output_device_->SetActive(true);
}
// The compositor will draw directly to the SoftwareOutputDevice which
// then calls OnPaint.
#if defined(OS_MACOSX)
browser_compositor_->SwapCompositorFrame(output_surface_id,
std::move(frame));
#else
delegated_frame_host_->SwapDelegatedFrame(output_surface_id,
std::move(frame));
#endif
} else {
if (!copy_frame_generator_.get()) {
copy_frame_generator_.reset(
new CefCopyFrameGenerator(frame_rate_threshold_ms_, this));
}
// Determine the damage rectangle for the current frame. This is the same
// calculation that SwapDelegatedFrame uses.
cc::RenderPass* root_pass =
frame.delegated_frame_data->render_pass_list.back().get();
gfx::Size frame_size = root_pass->output_rect.size();
gfx::Rect damage_rect =
gfx::ToEnclosingRect(gfx::RectF(root_pass->damage_rect));
damage_rect.Intersect(gfx::Rect(frame_size));
#if defined(OS_MACOSX)
browser_compositor_->SwapCompositorFrame(output_surface_id,
std::move(frame));
#else
delegated_frame_host_->SwapDelegatedFrame(output_surface_id,
std::move(frame));
#endif
// Request a copy of the last compositor frame which will eventually call
// OnPaint asynchronously.
copy_frame_generator_->GenerateCopyFrame(true, damage_rect);
}
return;
}
}
void CefRenderWidgetHostViewOSR::ClearCompositorFrame() {
GetDelegatedFrameHost()->ClearDelegatedFrame();
}
void CefRenderWidgetHostViewOSR::InitAsPopup(
content::RenderWidgetHostView* parent_host_view,
const gfx::Rect& pos) {
DCHECK_EQ(parent_host_view_, parent_host_view);
browser_impl_ = parent_host_view_->browser_impl();
DCHECK(browser_impl_.get());
if (parent_host_view_->popup_host_view_) {
// Cancel the previous popup widget.
parent_host_view_->popup_host_view_->CancelWidget();
}
parent_host_view_->set_popup_host_view(this);
CefRefPtr<CefRenderHandler> handler =
browser_impl_->GetClient()->GetRenderHandler();
if (handler.get())
handler->OnPopupShow(browser_impl_.get(), true);
popup_position_ = pos;
CefRect widget_pos(pos.x(), pos.y(), pos.width(), pos.height());
if (handler.get())
handler->OnPopupSize(browser_impl_.get(), widget_pos);
ResizeRootLayer();
Show();
}
void CefRenderWidgetHostViewOSR::InitAsFullscreen(
content::RenderWidgetHostView* reference_host_view) {
NOTREACHED() << "Fullscreen widgets are not supported in OSR";
}
void CefRenderWidgetHostViewOSR::UpdateCursor(
const content::WebCursor& cursor) {
TRACE_EVENT0("libcef", "CefRenderWidgetHostViewOSR::UpdateCursor");
if (!browser_impl_.get())
return;
CefRefPtr<CefRenderHandler> handler =
browser_impl_->GetClient()->GetRenderHandler();
if (!handler.get())
return;
content::WebCursor::CursorInfo cursor_info;
cursor.GetCursorInfo(&cursor_info);
const cef_cursor_type_t cursor_type =
static_cast<cef_cursor_type_t>(cursor_info.type);
CefCursorInfo custom_cursor_info;
if (cursor.IsCustom()) {
custom_cursor_info.hotspot.x = cursor_info.hotspot.x();
custom_cursor_info.hotspot.y = cursor_info.hotspot.y();
custom_cursor_info.image_scale_factor = cursor_info.image_scale_factor;
custom_cursor_info.buffer = cursor_info.custom_image.getPixels();
custom_cursor_info.size.width = cursor_info.custom_image.width();
custom_cursor_info.size.height = cursor_info.custom_image.height();
}
#if defined(USE_AURA)
content::WebCursor web_cursor = cursor;
ui::PlatformCursor platform_cursor;
if (web_cursor.IsCustom()) {
// |web_cursor| owns the resulting |platform_cursor|.
platform_cursor = web_cursor.GetPlatformCursor();
} else {
platform_cursor = GetPlatformCursor(cursor_info.type);
}
handler->OnCursorChange(browser_impl_.get(), platform_cursor, cursor_type,
custom_cursor_info);
#elif defined(OS_MACOSX)
// |web_cursor| owns the resulting |native_cursor|.
content::WebCursor web_cursor = cursor;
CefCursorHandle native_cursor = web_cursor.GetNativeCursor();
handler->OnCursorChange(browser_impl_.get(), native_cursor, cursor_type,
custom_cursor_info);
#else
// TODO(port): Implement this method to work on other platforms as part of
// off-screen rendering support.
NOTREACHED();
#endif
}
void CefRenderWidgetHostViewOSR::SetIsLoading(bool is_loading) {
}
#if !defined(OS_MACOSX)
void CefRenderWidgetHostViewOSR::TextInputStateChanged(
const content::TextInputState& params) {
}
void CefRenderWidgetHostViewOSR::ImeCancelComposition() {
}
#endif // !defined(OS_MACOSX)
void CefRenderWidgetHostViewOSR::RenderProcessGone(
base::TerminationStatus status,
int error_code) {
Destroy();
}
void CefRenderWidgetHostViewOSR::Destroy() {
if (!is_destroyed_) {
is_destroyed_ = true;
if (has_parent_) {
CancelWidget();
} else {
if (popup_host_view_)
popup_host_view_->CancelWidget();
if (child_host_view_)
child_host_view_->CancelWidget();
for (auto guest_host_view : guest_host_views_)
guest_host_view->CancelWidget();
Hide();
}
}
delete this;
}
void CefRenderWidgetHostViewOSR::SetTooltipText(
const base::string16& tooltip_text) {
if (!browser_impl_.get())
return;
CefString tooltip(tooltip_text);
CefRefPtr<CefDisplayHandler> handler =
browser_impl_->GetClient()->GetDisplayHandler();
if (handler.get()) {
handler->OnTooltip(browser_impl_.get(), tooltip);
}
}
gfx::Size CefRenderWidgetHostViewOSR::GetRequestedRendererSize() const {
return GetDelegatedFrameHost()->GetRequestedRendererSize();
}
gfx::Size CefRenderWidgetHostViewOSR::GetPhysicalBackingSize() const {
return gfx::ConvertSizeToPixel(scale_factor_, GetRequestedRendererSize());
}
#if !defined(OS_MACOSX)
void CefRenderWidgetHostViewOSR::SelectionBoundsChanged(
const ViewHostMsg_SelectionBounds_Params& params) {
}
#endif
void CefRenderWidgetHostViewOSR::CopyFromCompositingSurface(
const gfx::Rect& src_subrect,
const gfx::Size& dst_size,
const content::ReadbackRequestCallback& callback,
const SkColorType color_type) {
GetDelegatedFrameHost()->CopyFromCompositingSurface(
src_subrect, dst_size, callback, color_type);
}
void CefRenderWidgetHostViewOSR::CopyFromCompositingSurfaceToVideoFrame(
const gfx::Rect& src_subrect,
const scoped_refptr<media::VideoFrame>& target,
const base::Callback<void(const gfx::Rect&, bool)>& callback) {
GetDelegatedFrameHost()->CopyFromCompositingSurfaceToVideoFrame(
src_subrect, target, callback);
}
bool CefRenderWidgetHostViewOSR::CanCopyToVideoFrame() const {
return GetDelegatedFrameHost()->CanCopyToVideoFrame();
}
void CefRenderWidgetHostViewOSR::BeginFrameSubscription(
std::unique_ptr<content::RenderWidgetHostViewFrameSubscriber> subscriber) {
GetDelegatedFrameHost()->BeginFrameSubscription(std::move(subscriber));
}
void CefRenderWidgetHostViewOSR::EndFrameSubscription() {
GetDelegatedFrameHost()->EndFrameSubscription();
}
bool CefRenderWidgetHostViewOSR::HasAcceleratedSurface(
const gfx::Size& desired_size) {
// CEF doesn't use GetBackingStore for accelerated pages, so it doesn't
// matter what is returned here as GetBackingStore is the only caller of this
// method.
NOTREACHED();
return false;
}
gfx::Rect CefRenderWidgetHostViewOSR::GetBoundsInRootWindow() {
if (!browser_impl_.get())
return gfx::Rect();
CefRect rc;
CefRefPtr<CefRenderHandler> handler =
browser_impl_->client()->GetRenderHandler();
if (handler.get() && handler->GetRootScreenRect(browser_impl_.get(), rc))
return gfx::Rect(rc.x, rc.y, rc.width, rc.height);
return gfx::Rect();
}
content::BrowserAccessibilityManager*
CefRenderWidgetHostViewOSR::CreateBrowserAccessibilityManager(
content::BrowserAccessibilityDelegate* delegate,
bool for_root_frame) {
return NULL;
}
void CefRenderWidgetHostViewOSR::LockCompositingSurface() {
NOTIMPLEMENTED();
}
void CefRenderWidgetHostViewOSR::UnlockCompositingSurface() {
NOTIMPLEMENTED();
}
#if defined(TOOLKIT_VIEWS) || defined(USE_AURA)
void CefRenderWidgetHostViewOSR::ShowDisambiguationPopup(
const gfx::Rect& rect_pixels,
const SkBitmap& zoomed_bitmap) {
}
#endif
#if !defined(OS_MACOSX) && defined(USE_AURA)
void CefRenderWidgetHostViewOSR::ImeCompositionRangeChanged(
const gfx::Range& range,
const std::vector<gfx::Rect>& character_bounds) {
}
#endif
void CefRenderWidgetHostViewOSR::SetNeedsBeginFrames(bool enabled) {
SetFrameRate();
// Start/stop the timer that sends BeginFrame requests.
begin_frame_timer_->SetActive(enabled);
if (software_output_device_) {
// When the SoftwareOutputDevice is active it will call OnPaint for each
// frame. If the SoftwareOutputDevice is deactivated while an invalidation
// region is pending it will call OnPaint immediately.
software_output_device_->SetActive(enabled);
}
}
std::unique_ptr<cc::SoftwareOutputDevice>
CefRenderWidgetHostViewOSR::CreateSoftwareOutputDevice(
ui::Compositor* compositor) {
DCHECK_EQ(GetCompositor(), compositor);
DCHECK(!copy_frame_generator_);
DCHECK(!software_output_device_);
software_output_device_ = new CefSoftwareOutputDeviceOSR(
compositor, transparent_,
base::Bind(&CefRenderWidgetHostViewOSR::OnPaint,
weak_ptr_factory_.GetWeakPtr()));
return base::WrapUnique(software_output_device_);
}
#if !defined(OS_MACOSX)
ui::Layer* CefRenderWidgetHostViewOSR::DelegatedFrameHostGetLayer() const {
return GetRootLayer();
}
bool CefRenderWidgetHostViewOSR::DelegatedFrameHostIsVisible() const {
return !render_widget_host_->is_hidden();
}
SkColor CefRenderWidgetHostViewOSR::DelegatedFrameHostGetGutterColor(
SkColor color) const {
// When making an element on the page fullscreen the element's background
// may not match the page's, so use black as the gutter color to avoid
// flashes of brighter colors during the transition.
if (render_widget_host_->delegate() &&
render_widget_host_->delegate()->IsFullscreenForCurrentTab()) {
return SK_ColorBLACK;
}
return color;
}
gfx::Size
CefRenderWidgetHostViewOSR::DelegatedFrameHostDesiredSizeInDIP() const {
return GetRootLayer()->bounds().size();
}
bool CefRenderWidgetHostViewOSR::DelegatedFrameCanCreateResizeLock() const {
return !render_widget_host_->auto_resize_enabled();
}
std::unique_ptr<content::ResizeLock>
CefRenderWidgetHostViewOSR::DelegatedFrameHostCreateResizeLock(
bool defer_compositor_lock) {
const gfx::Size& desired_size = GetRootLayer()->bounds().size();
return std::unique_ptr<content::ResizeLock>(new CefResizeLock(
this,
desired_size,
defer_compositor_lock,
kResizeLockTimeoutMs));
}
void CefRenderWidgetHostViewOSR::DelegatedFrameHostResizeLockWasReleased() {
return render_widget_host_->WasResized();
}
void
CefRenderWidgetHostViewOSR::DelegatedFrameHostSendReclaimCompositorResources(
int output_surface_id,
bool is_swap_ack,
const cc::ReturnedResourceArray& resources) {
render_widget_host_->Send(new ViewMsg_ReclaimCompositorResources(
render_widget_host_->GetRoutingID(), output_surface_id, is_swap_ack,
resources));
}
void CefRenderWidgetHostViewOSR::DelegatedFrameHostOnLostCompositorResources() {
render_widget_host_->ScheduleComposite();
}
void CefRenderWidgetHostViewOSR::DelegatedFrameHostUpdateVSyncParameters(
const base::TimeTicks& timebase,
const base::TimeDelta& interval) {
render_widget_host_->UpdateVSyncParameters(timebase, interval);
}
void CefRenderWidgetHostViewOSR::SetBeginFrameSource(
cc::BeginFrameSource* source) {
// TODO(cef): Maybe we can use this method in combination with
// OnSetNeedsBeginFrames() instead of using CefBeginFrameTimer.
// See https://codereview.chromium.org/1841083007.
}
bool CefRenderWidgetHostViewOSR::IsAutoResizeEnabled() const {
return render_widget_host_->auto_resize_enabled();
}
#endif // !defined(OS_MACOSX)
bool CefRenderWidgetHostViewOSR::InstallTransparency() {
if (transparent_) {
SetBackgroundColor(SkColor());
#if defined(OS_MACOSX)
browser_compositor_->SetHasTransparentBackground(true);
#else
compositor_->SetHostHasTransparentBackground(true);
#endif
return true;
}
return false;
}
void CefRenderWidgetHostViewOSR::WasResized() {
if (hold_resize_) {
if (!pending_resize_)
pending_resize_ = true;
return;
}
ResizeRootLayer();
if (render_widget_host_)
render_widget_host_->WasResized();
GetDelegatedFrameHost()->WasResized();
}
void CefRenderWidgetHostViewOSR::GetScreenInfo(blink::WebScreenInfo* results) {
if (!browser_impl_.get())
return;
CefScreenInfo screen_info(
kDefaultScaleFactor, 0, 0, false, CefRect(), CefRect());
CefRefPtr<CefRenderHandler> handler =
browser_impl_->client()->GetRenderHandler();
if (handler.get() &&
(!handler->GetScreenInfo(browser_impl_.get(), screen_info) ||
screen_info.rect.width == 0 ||
screen_info.rect.height == 0 ||
screen_info.available_rect.width == 0 ||
screen_info.available_rect.height == 0)) {
// If a screen rectangle was not provided, try using the view rectangle
// instead. Otherwise, popup views may be drawn incorrectly, or not at all.
CefRect screenRect;
if (!handler->GetViewRect(browser_impl_.get(), screenRect)) {
NOTREACHED();
screenRect = CefRect();
}
if (screen_info.rect.width == 0 && screen_info.rect.height == 0)
screen_info.rect = screenRect;
if (screen_info.available_rect.width == 0 &&
screen_info.available_rect.height == 0)
screen_info.available_rect = screenRect;
}
*results = webScreenInfoFrom(screen_info);
}
void CefRenderWidgetHostViewOSR::OnScreenInfoChanged() {
TRACE_EVENT0("libcef", "CefRenderWidgetHostViewOSR::OnScreenInfoChanged");
if (!render_widget_host_)
return;
// TODO(OSR): Update the backing store.
render_widget_host_->NotifyScreenInfoChanged();
// We might want to change the cursor scale factor here as well - see the
// cache for the current_cursor_, as passed by UpdateCursor from the renderer
// in the rwhv_aura (current_cursor_.SetScaleFactor)
// Notify the guest hosts if any.
for (auto guest_host_view : guest_host_views_)
guest_host_view->OnScreenInfoChanged();
}
void CefRenderWidgetHostViewOSR::Invalidate(
CefBrowserHost::PaintElementType type) {
TRACE_EVENT1("libcef", "CefRenderWidgetHostViewOSR::Invalidate", "type",
type);
if (!IsPopupWidget() && type == PET_POPUP) {
if (popup_host_view_)
popup_host_view_->Invalidate(type);
return;
}
const gfx::Rect& bounds_in_pixels = gfx::Rect(GetPhysicalBackingSize());
if (software_output_device_) {
software_output_device_->OnPaint(bounds_in_pixels);
} else if (copy_frame_generator_.get()) {
copy_frame_generator_->GenerateCopyFrame(true, bounds_in_pixels);
}
}
void CefRenderWidgetHostViewOSR::SendKeyEvent(
const content::NativeWebKeyboardEvent& event) {
TRACE_EVENT0("libcef", "CefRenderWidgetHostViewOSR::SendKeyEvent");
if (!render_widget_host_)
return;
render_widget_host_->ForwardKeyboardEvent(event);
}
void CefRenderWidgetHostViewOSR::SendMouseEvent(
const blink::WebMouseEvent& event) {
TRACE_EVENT0("libcef", "CefRenderWidgetHostViewOSR::SendMouseEvent");
if (!IsPopupWidget()) {
if (browser_impl_.get() && event.type == blink::WebMouseEvent::MouseDown)
browser_impl_->CancelContextMenu();
if (popup_host_view_ &&
popup_host_view_->popup_position_.Contains(event.x, event.y)) {
blink::WebMouseEvent popup_event(event);
popup_event.x -= popup_host_view_->popup_position_.x();
popup_event.y -= popup_host_view_->popup_position_.y();
popup_event.windowX = popup_event.x;
popup_event.windowY = popup_event.y;
popup_host_view_->SendMouseEvent(popup_event);
return;
}
}
if (!render_widget_host_)
return;
render_widget_host_->ForwardMouseEvent(event);
}
void CefRenderWidgetHostViewOSR::SendMouseWheelEvent(
const blink::WebMouseWheelEvent& event) {
TRACE_EVENT0("libcef", "CefRenderWidgetHostViewOSR::SendMouseWheelEvent");
if (!IsPopupWidget()) {
if (browser_impl_.get())
browser_impl_->CancelContextMenu();
if (popup_host_view_) {
if (popup_host_view_->popup_position_.Contains(event.x, event.y)) {
blink::WebMouseWheelEvent popup_event(event);
popup_event.x -= popup_host_view_->popup_position_.x();
popup_event.y -= popup_host_view_->popup_position_.y();
popup_event.windowX = popup_event.x;
popup_event.windowY = popup_event.y;
popup_host_view_->SendMouseWheelEvent(popup_event);
return;
} else {
// Scrolling outside of the popup widget so destroy it.
// Execute asynchronously to avoid deleting the widget from inside some
// other callback.
CEF_POST_TASK(CEF_UIT,
base::Bind(&CefRenderWidgetHostViewOSR::CancelWidget,
popup_host_view_->weak_ptr_factory_.GetWeakPtr()));
}
}
}
if (!render_widget_host_)
return;
render_widget_host_->ForwardWheelEvent(event);
}
void CefRenderWidgetHostViewOSR::SendFocusEvent(bool focus) {
if (!render_widget_host_)
return;
content::RenderWidgetHostImpl* widget =
content::RenderWidgetHostImpl::From(render_widget_host_);
if (focus) {
widget->GotFocus();
widget->SetActive(true);
} else {
if (browser_impl_.get())
browser_impl_->CancelContextMenu();
widget->SetActive(false);
widget->Blur();
}
}
void CefRenderWidgetHostViewOSR::UpdateFrameRate() {
frame_rate_threshold_ms_ = 0;
SetFrameRate();
// Notify the guest hosts if any.
for (auto guest_host_view : guest_host_views_)
guest_host_view->UpdateFrameRate();
}
void CefRenderWidgetHostViewOSR::HoldResize() {
if (!hold_resize_)
hold_resize_ = true;
}
void CefRenderWidgetHostViewOSR::ReleaseResize() {
if (!hold_resize_)
return;
hold_resize_ = false;
if (pending_resize_) {
pending_resize_ = false;
CEF_POST_TASK(CEF_UIT,
base::Bind(&CefRenderWidgetHostViewOSR::WasResized,
weak_ptr_factory_.GetWeakPtr()));
}
}
void CefRenderWidgetHostViewOSR::OnPaint(
const gfx::Rect& damage_rect,
int bitmap_width,
int bitmap_height,
void* bitmap_pixels) {
TRACE_EVENT0("libcef", "CefRenderWidgetHostViewOSR::OnPaint");
CefRefPtr<CefRenderHandler> handler =
browser_impl_->client()->GetRenderHandler();
if (!handler.get())
return;
// Don't execute WasResized while the OnPaint callback is pending.
HoldResize();
gfx::Rect rect_in_bitmap(0, 0, bitmap_width, bitmap_height);
rect_in_bitmap.Intersect(damage_rect);
CefRenderHandler::RectList rcList;
rcList.push_back(CefRect(rect_in_bitmap.x(), rect_in_bitmap.y(),
rect_in_bitmap.width(), rect_in_bitmap.height()));
handler->OnPaint(
browser_impl_.get(),
IsPopupWidget() ? PET_POPUP : PET_VIEW,
rcList,
bitmap_pixels,
bitmap_width,
bitmap_height);
ReleaseResize();
}
void CefRenderWidgetHostViewOSR::AddGuestHostView(
CefRenderWidgetHostViewOSR* guest_host) {
guest_host_views_.insert(guest_host);
}
void CefRenderWidgetHostViewOSR::RemoveGuestHostView(
CefRenderWidgetHostViewOSR* guest_host) {
guest_host_views_.erase(guest_host);
}
#if !defined(OS_MACOSX)
ui::Compositor* CefRenderWidgetHostViewOSR::GetCompositor() const {
return compositor_.get();
}
ui::Layer* CefRenderWidgetHostViewOSR::GetRootLayer() const {
return root_layer_.get();
}
content::DelegatedFrameHost* CefRenderWidgetHostViewOSR::GetDelegatedFrameHost()
const {
return delegated_frame_host_.get();
}
#endif // !defined(OS_MACOSX)
void CefRenderWidgetHostViewOSR::SetFrameRate() {
CefRefPtr<CefBrowserHostImpl> browser;
if (parent_host_view_) {
// Use the same frame rate as the embedding browser.
browser = parent_host_view_->browser_impl_;
} else {
browser = browser_impl_;
}
CHECK(browser);
// Only set the frame rate one time.
if (frame_rate_threshold_ms_ != 0)
return;
const int frame_rate =
osr_util::ClampFrameRate(browser->settings().windowless_frame_rate);
frame_rate_threshold_ms_ = 1000 / frame_rate;
// Configure the VSync interval for the browser process.
GetCompositor()->vsync_manager()->SetAuthoritativeVSyncInterval(
base::TimeDelta::FromMilliseconds(frame_rate_threshold_ms_));
if (copy_frame_generator_.get()) {
copy_frame_generator_->set_frame_rate_threshold_ms(
frame_rate_threshold_ms_);
}
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
if (!command_line->HasSwitch(cc::switches::kDisableBeginFrameScheduling)) {
if (begin_frame_timer_.get()) {
begin_frame_timer_->SetFrameRateThresholdMs(frame_rate_threshold_ms_);
} else {
begin_frame_timer_.reset(new CefBeginFrameTimer(
frame_rate_threshold_ms_,
base::Bind(&CefRenderWidgetHostViewOSR::OnBeginFrameTimerTick,
weak_ptr_factory_.GetWeakPtr())));
}
}
}
void CefRenderWidgetHostViewOSR::SetDeviceScaleFactor() {
float new_scale_factor = kDefaultScaleFactor;
if (browser_impl_.get()) {
CefScreenInfo screen_info(
kDefaultScaleFactor, 0, 0, false, CefRect(), CefRect());
CefRefPtr<CefRenderHandler> handler =
browser_impl_->client()->GetRenderHandler();
if (handler.get() && handler->GetScreenInfo(browser_impl_.get(),
screen_info)) {
new_scale_factor = screen_info.device_scale_factor;
}
}
scale_factor_ = new_scale_factor;
if (render_widget_host_ && render_widget_host_->delegate())
render_widget_host_->delegate()->UpdateDeviceScaleFactor(new_scale_factor);
// Notify the guest hosts if any.
for (auto guest_host_view : guest_host_views_) {
if (guest_host_view->render_widget_host() &&
guest_host_view->render_widget_host()->delegate()) {
guest_host_view->render_widget_host()->delegate()->
UpdateDeviceScaleFactor(new_scale_factor);
}
}
}
void CefRenderWidgetHostViewOSR::ResizeRootLayer() {
SetFrameRate();
const float orgScaleFactor = scale_factor_;
SetDeviceScaleFactor();
const bool scaleFactorDidChange = (orgScaleFactor != scale_factor_);
gfx::Size size;
if (!IsPopupWidget())
size = GetViewBounds().size();
else
size = popup_position_.size();
if (!scaleFactorDidChange && size == GetRootLayer()->bounds().size())
return;
const gfx::Size& size_in_pixels =
gfx::ConvertSizeToPixel(scale_factor_, size);
GetRootLayer()->SetBounds(gfx::Rect(size));
GetCompositor()->SetScaleAndSize(scale_factor_, size_in_pixels);
PlatformResizeCompositorWidget(size_in_pixels);
}
void CefRenderWidgetHostViewOSR::OnBeginFrameTimerTick() {
const base::TimeTicks frame_time = base::TimeTicks::Now();
const base::TimeDelta vsync_period =
base::TimeDelta::FromMilliseconds(frame_rate_threshold_ms_);
SendBeginFrame(frame_time, vsync_period);
}
void CefRenderWidgetHostViewOSR::SendBeginFrame(base::TimeTicks frame_time,
base::TimeDelta vsync_period) {
TRACE_EVENT1("libcef", "CefRenderWidgetHostViewOSR::SendBeginFrame",
"frame_time_us", frame_time.ToInternalValue());
base::TimeTicks display_time = frame_time + vsync_period;
// TODO(brianderson): Use adaptive draw-time estimation.
base::TimeDelta estimated_browser_composite_time =
base::TimeDelta::FromMicroseconds(
(1.0f * base::Time::kMicrosecondsPerSecond) / (3.0f * 60));
base::TimeTicks deadline = display_time - estimated_browser_composite_time;
render_widget_host_->Send(new ViewMsg_BeginFrame(
render_widget_host_->GetRoutingID(),
cc::BeginFrameArgs::Create(BEGINFRAME_FROM_HERE, frame_time, deadline,
vsync_period, cc::BeginFrameArgs::NORMAL)));
}
void CefRenderWidgetHostViewOSR::CancelWidget() {
if (render_widget_host_)
render_widget_host_->LostCapture();
Hide();
if (IsPopupWidget() && browser_impl_.get()) {
CefRefPtr<CefRenderHandler> handler =
browser_impl_->client()->GetRenderHandler();
if (handler.get())
handler->OnPopupShow(browser_impl_.get(), false);
browser_impl_ = NULL;
}
if (parent_host_view_) {
if (parent_host_view_->popup_host_view_ == this) {
parent_host_view_->set_popup_host_view(NULL);
} else if (parent_host_view_->child_host_view_ == this) {
parent_host_view_->set_child_host_view(NULL);
// Start rendering the parent view again.
parent_host_view_->Show();
} else {
parent_host_view_->RemoveGuestHostView(this);
}
parent_host_view_ = NULL;
}
if (render_widget_host_ && !is_destroyed_) {
is_destroyed_ = true;
// Results in a call to Destroy().
render_widget_host_->ShutdownAndDestroyWidget(true);
}
}
void CefRenderWidgetHostViewOSR::OnScrollOffsetChanged() {
if (browser_impl_.get()) {
CefRefPtr<CefRenderHandler> handler =
browser_impl_->client()->GetRenderHandler();
if (handler.get()) {
handler->OnScrollOffsetChanged(browser_impl_.get(),
last_scroll_offset_.x(),
last_scroll_offset_.y());
}
}
is_scroll_offset_changed_pending_ = false;
}
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