| // Copyright 2014 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 "android_webview/browser/browser_view_renderer.h" |
| |
| #include <utility> |
| |
| #include "android_webview/browser/browser_view_renderer_client.h" |
| #include "android_webview/browser/child_frame.h" |
| #include "android_webview/browser/compositor_frame_consumer.h" |
| #include "base/auto_reset.h" |
| #include "base/command_line.h" |
| #include "base/logging.h" |
| #include "base/memory/ptr_util.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "base/strings/stringprintf.h" |
| #include "base/supports_user_data.h" |
| #include "base/trace_event/trace_event_argument.h" |
| #include "cc/output/compositor_frame.h" |
| #include "cc/output/compositor_frame_ack.h" |
| #include "content/public/browser/render_process_host.h" |
| #include "content/public/browser/render_view_host.h" |
| #include "content/public/browser/web_contents.h" |
| #include "content/public/common/content_switches.h" |
| #include "gpu/command_buffer/service/gpu_switches.h" |
| #include "third_party/skia/include/core/SkBitmap.h" |
| #include "third_party/skia/include/core/SkCanvas.h" |
| #include "third_party/skia/include/core/SkPicture.h" |
| #include "third_party/skia/include/core/SkPictureRecorder.h" |
| #include "ui/gfx/geometry/point.h" |
| #include "ui/gfx/geometry/scroll_offset.h" |
| #include "ui/gfx/geometry/vector2d_conversions.h" |
| |
| namespace android_webview { |
| |
| namespace { |
| |
| const double kEpsilon = 1e-8; |
| |
| // Used to calculate memory allocation. Determined experimentally. |
| const size_t kMemoryMultiplier = 20; |
| const size_t kBytesPerPixel = 4; |
| const size_t kMemoryAllocationStep = 5 * 1024 * 1024; |
| uint64_t g_memory_override_in_bytes = 0u; |
| |
| const void* const kBrowserViewRendererUserDataKey = |
| &kBrowserViewRendererUserDataKey; |
| |
| class BrowserViewRendererUserData : public base::SupportsUserData::Data { |
| public: |
| explicit BrowserViewRendererUserData(BrowserViewRenderer* ptr) : bvr_(ptr) {} |
| |
| static BrowserViewRenderer* GetBrowserViewRenderer( |
| content::WebContents* web_contents) { |
| if (!web_contents) |
| return NULL; |
| BrowserViewRendererUserData* data = |
| static_cast<BrowserViewRendererUserData*>( |
| web_contents->GetUserData(kBrowserViewRendererUserDataKey)); |
| return data ? data->bvr_ : NULL; |
| } |
| |
| private: |
| BrowserViewRenderer* bvr_; |
| }; |
| |
| } // namespace |
| |
| // static |
| void BrowserViewRenderer::CalculateTileMemoryPolicy() { |
| base::CommandLine* cl = base::CommandLine::ForCurrentProcess(); |
| |
| // If the value was overridden on the command line, use the specified value. |
| bool client_hard_limit_bytes_overridden = |
| cl->HasSwitch(switches::kForceGpuMemAvailableMb); |
| if (client_hard_limit_bytes_overridden) { |
| base::StringToUint64( |
| base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII( |
| switches::kForceGpuMemAvailableMb), |
| &g_memory_override_in_bytes); |
| g_memory_override_in_bytes *= 1024 * 1024; |
| } |
| } |
| |
| // static |
| BrowserViewRenderer* BrowserViewRenderer::FromWebContents( |
| content::WebContents* web_contents) { |
| return BrowserViewRendererUserData::GetBrowserViewRenderer(web_contents); |
| } |
| |
| BrowserViewRenderer::BrowserViewRenderer( |
| BrowserViewRendererClient* client, |
| const scoped_refptr<base::SingleThreadTaskRunner>& ui_task_runner) |
| : client_(client), |
| ui_task_runner_(ui_task_runner), |
| current_compositor_frame_consumer_(nullptr), |
| compositor_(nullptr), |
| is_paused_(false), |
| view_visible_(false), |
| window_visible_(false), |
| attached_to_window_(false), |
| hardware_enabled_(false), |
| dip_scale_(0.f), |
| page_scale_factor_(1.f), |
| min_page_scale_factor_(0.f), |
| max_page_scale_factor_(0.f), |
| on_new_picture_enable_(false), |
| clear_view_(false), |
| offscreen_pre_raster_(false) {} |
| |
| BrowserViewRenderer::~BrowserViewRenderer() { |
| DCHECK(compositor_map_.empty()); |
| SetCurrentCompositorFrameConsumer(nullptr); |
| while (compositor_frame_consumers_.size()) { |
| RemoveCompositorFrameConsumer(*compositor_frame_consumers_.begin()); |
| } |
| } |
| |
| void BrowserViewRenderer::SetCurrentCompositorFrameConsumer( |
| CompositorFrameConsumer* compositor_frame_consumer) { |
| if (compositor_frame_consumer == current_compositor_frame_consumer_) { |
| return; |
| } |
| current_compositor_frame_consumer_ = compositor_frame_consumer; |
| if (current_compositor_frame_consumer_) { |
| compositor_frame_consumers_.insert(current_compositor_frame_consumer_); |
| current_compositor_frame_consumer_->SetCompositorFrameProducer(this); |
| OnParentDrawConstraintsUpdated(current_compositor_frame_consumer_); |
| } |
| } |
| |
| void BrowserViewRenderer::RegisterWithWebContents( |
| content::WebContents* web_contents) { |
| web_contents->SetUserData(kBrowserViewRendererUserDataKey, |
| new BrowserViewRendererUserData(this)); |
| } |
| |
| void BrowserViewRenderer::TrimMemory() { |
| DCHECK(ui_task_runner_->BelongsToCurrentThread()); |
| TRACE_EVENT0("android_webview", "BrowserViewRenderer::TrimMemory"); |
| // Just set the memory limit to 0 and drop all tiles. This will be reset to |
| // normal levels in the next DrawGL call. |
| if (!offscreen_pre_raster_) |
| ReleaseHardware(); |
| } |
| |
| void BrowserViewRenderer::UpdateMemoryPolicy() { |
| if (!compositor_) { |
| return; |
| } |
| |
| if (!hardware_enabled_) { |
| compositor_->SetMemoryPolicy(0u); |
| return; |
| } |
| |
| size_t bytes_limit = 0u; |
| if (g_memory_override_in_bytes) { |
| bytes_limit = static_cast<size_t>(g_memory_override_in_bytes); |
| } else { |
| gfx::Rect interest_rect = |
| offscreen_pre_raster_ || external_draw_constraints_.is_layer |
| ? gfx::Rect(size_) |
| : last_on_draw_global_visible_rect_; |
| size_t width = interest_rect.width(); |
| size_t height = interest_rect.height(); |
| bytes_limit = kMemoryMultiplier * kBytesPerPixel * width * height; |
| // Round up to a multiple of kMemoryAllocationStep. |
| bytes_limit = |
| (bytes_limit / kMemoryAllocationStep + 1) * kMemoryAllocationStep; |
| } |
| |
| compositor_->SetMemoryPolicy(bytes_limit); |
| } |
| |
| content::SynchronousCompositor* BrowserViewRenderer::FindCompositor( |
| const CompositorID& compositor_id) const { |
| const auto& compositor_iterator = compositor_map_.find(compositor_id); |
| if (compositor_iterator == compositor_map_.end()) |
| return nullptr; |
| |
| return compositor_iterator->second; |
| } |
| |
| void BrowserViewRenderer::PrepareToDraw(const gfx::Vector2d& scroll, |
| const gfx::Rect& global_visible_rect) { |
| last_on_draw_scroll_offset_ = scroll; |
| last_on_draw_global_visible_rect_ = global_visible_rect; |
| } |
| |
| bool BrowserViewRenderer::CanOnDraw() { |
| if (!compositor_) { |
| TRACE_EVENT_INSTANT0("android_webview", "EarlyOut_NoCompositor", |
| TRACE_EVENT_SCOPE_THREAD); |
| return false; |
| } |
| if (clear_view_) { |
| TRACE_EVENT_INSTANT0("android_webview", "EarlyOut_ClearView", |
| TRACE_EVENT_SCOPE_THREAD); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool BrowserViewRenderer::OnDrawHardware() { |
| DCHECK(current_compositor_frame_consumer_); |
| TRACE_EVENT0("android_webview", "BrowserViewRenderer::OnDrawHardware"); |
| |
| current_compositor_frame_consumer_->InitializeHardwareDrawIfNeededOnUI(); |
| |
| if (!CanOnDraw()) { |
| return false; |
| } |
| |
| current_compositor_frame_consumer_->SetScrollOffsetOnUI( |
| last_on_draw_scroll_offset_); |
| hardware_enabled_ = true; |
| |
| external_draw_constraints_ = |
| current_compositor_frame_consumer_->GetParentDrawConstraintsOnUI(); |
| |
| ReturnResourceFromParent(current_compositor_frame_consumer_); |
| UpdateMemoryPolicy(); |
| |
| gfx::Size surface_size(size_); |
| gfx::Rect viewport(surface_size); |
| gfx::Rect clip = viewport; |
| gfx::Transform transform_for_tile_priority = |
| external_draw_constraints_.transform; |
| |
| // If the WebView is on a layer, WebView does not know what transform is |
| // applied onto the layer so global visible rect does not make sense here. |
| // In this case, just use the surface rect for tiling. |
| gfx::Rect viewport_rect_for_tile_priority; |
| |
| // Leave viewport_rect_for_tile_priority empty if offscreen_pre_raster_ is on. |
| if (!offscreen_pre_raster_ && !external_draw_constraints_.is_layer) { |
| viewport_rect_for_tile_priority = last_on_draw_global_visible_rect_; |
| } |
| |
| content::SynchronousCompositor::Frame frame = |
| compositor_->DemandDrawHw(surface_size, |
| gfx::Transform(), |
| viewport, |
| clip, |
| viewport_rect_for_tile_priority, |
| transform_for_tile_priority); |
| if (!frame.frame.get()) { |
| TRACE_EVENT_INSTANT0("android_webview", "NoNewFrame", |
| TRACE_EVENT_SCOPE_THREAD); |
| return current_compositor_frame_consumer_->HasFrameOnUI(); |
| } |
| |
| std::unique_ptr<ChildFrame> child_frame = base::WrapUnique(new ChildFrame( |
| frame.output_surface_id, std::move(frame.frame), compositor_id_, |
| viewport_rect_for_tile_priority.IsEmpty(), transform_for_tile_priority, |
| offscreen_pre_raster_, external_draw_constraints_.is_layer)); |
| |
| ReturnUnusedResource( |
| current_compositor_frame_consumer_->PassUncommittedFrameOnUI()); |
| current_compositor_frame_consumer_->SetFrameOnUI(std::move(child_frame)); |
| return true; |
| } |
| |
| void BrowserViewRenderer::OnParentDrawConstraintsUpdated( |
| CompositorFrameConsumer* compositor_frame_consumer) { |
| DCHECK(compositor_frame_consumer); |
| if (compositor_frame_consumer != current_compositor_frame_consumer_) |
| return; |
| PostInvalidate(compositor_); |
| external_draw_constraints_ = |
| current_compositor_frame_consumer_->GetParentDrawConstraintsOnUI(); |
| UpdateMemoryPolicy(); |
| } |
| |
| void BrowserViewRenderer::RemoveCompositorFrameConsumer( |
| CompositorFrameConsumer* compositor_frame_consumer) { |
| DCHECK(compositor_frame_consumers_.count(compositor_frame_consumer)); |
| compositor_frame_consumers_.erase(compositor_frame_consumer); |
| if (current_compositor_frame_consumer_ == compositor_frame_consumer) { |
| SetCurrentCompositorFrameConsumer(nullptr); |
| } |
| |
| // At this point the compositor frame consumer has to hand back all resources |
| // to the child compositor. |
| compositor_frame_consumer->DeleteHardwareRendererOnUI(); |
| ReturnUnusedResource(compositor_frame_consumer->PassUncommittedFrameOnUI()); |
| ReturnResourceFromParent(compositor_frame_consumer); |
| compositor_frame_consumer->SetCompositorFrameProducer(nullptr); |
| } |
| |
| void BrowserViewRenderer::ReturnUnusedResource( |
| std::unique_ptr<ChildFrame> child_frame) { |
| if (!child_frame.get() || !child_frame->frame.get()) |
| return; |
| |
| cc::CompositorFrameAck frame_ack; |
| cc::TransferableResource::ReturnResources( |
| child_frame->frame->delegated_frame_data->resource_list, |
| &frame_ack.resources); |
| content::SynchronousCompositor* compositor = |
| FindCompositor(child_frame->compositor_id); |
| if (compositor && !frame_ack.resources.empty()) |
| compositor->ReturnResources(child_frame->output_surface_id, frame_ack); |
| } |
| |
| void BrowserViewRenderer::ReturnResourceFromParent( |
| CompositorFrameConsumer* compositor_frame_consumer) { |
| CompositorFrameConsumer::ReturnedResourcesMap returned_resource_map; |
| compositor_frame_consumer->SwapReturnedResourcesOnUI(&returned_resource_map); |
| for (auto& pair : returned_resource_map) { |
| CompositorID compositor_id = pair.first; |
| content::SynchronousCompositor* compositor = FindCompositor(compositor_id); |
| cc::CompositorFrameAck frame_ack; |
| frame_ack.resources.swap(pair.second.resources); |
| |
| if (compositor && !frame_ack.resources.empty()) { |
| compositor->ReturnResources(pair.second.output_surface_id, frame_ack); |
| } |
| } |
| } |
| |
| bool BrowserViewRenderer::OnDrawSoftware(SkCanvas* canvas) { |
| return CanOnDraw() && CompositeSW(canvas); |
| } |
| |
| sk_sp<SkPicture> BrowserViewRenderer::CapturePicture(int width, |
| int height) { |
| TRACE_EVENT0("android_webview", "BrowserViewRenderer::CapturePicture"); |
| |
| // Return empty Picture objects for empty SkPictures. |
| if (width <= 0 || height <= 0) { |
| SkPictureRecorder emptyRecorder; |
| emptyRecorder.beginRecording(0, 0); |
| return emptyRecorder.finishRecordingAsPicture(); |
| } |
| |
| SkPictureRecorder recorder; |
| SkCanvas* rec_canvas = recorder.beginRecording(width, height, NULL, 0); |
| if (compositor_) { |
| { |
| // Reset scroll back to the origin, will go back to the old |
| // value when scroll_reset is out of scope. |
| compositor_->DidChangeRootLayerScrollOffset(gfx::ScrollOffset()); |
| CompositeSW(rec_canvas); |
| } |
| compositor_->DidChangeRootLayerScrollOffset( |
| gfx::ScrollOffset(scroll_offset_dip_)); |
| } |
| return recorder.finishRecordingAsPicture(); |
| } |
| |
| void BrowserViewRenderer::EnableOnNewPicture(bool enabled) { |
| on_new_picture_enable_ = enabled; |
| } |
| |
| void BrowserViewRenderer::ClearView() { |
| TRACE_EVENT_INSTANT0("android_webview", |
| "BrowserViewRenderer::ClearView", |
| TRACE_EVENT_SCOPE_THREAD); |
| if (clear_view_) |
| return; |
| |
| clear_view_ = true; |
| // Always invalidate ignoring the compositor to actually clear the webview. |
| PostInvalidate(compositor_); |
| } |
| |
| void BrowserViewRenderer::SetOffscreenPreRaster(bool enable) { |
| if (offscreen_pre_raster_ != enable) { |
| offscreen_pre_raster_ = enable; |
| UpdateMemoryPolicy(); |
| } |
| } |
| |
| void BrowserViewRenderer::SetIsPaused(bool paused) { |
| TRACE_EVENT_INSTANT1("android_webview", |
| "BrowserViewRenderer::SetIsPaused", |
| TRACE_EVENT_SCOPE_THREAD, |
| "paused", |
| paused); |
| is_paused_ = paused; |
| } |
| |
| void BrowserViewRenderer::SetViewVisibility(bool view_visible) { |
| TRACE_EVENT_INSTANT1("android_webview", |
| "BrowserViewRenderer::SetViewVisibility", |
| TRACE_EVENT_SCOPE_THREAD, |
| "view_visible", |
| view_visible); |
| view_visible_ = view_visible; |
| } |
| |
| void BrowserViewRenderer::SetWindowVisibility(bool window_visible) { |
| TRACE_EVENT_INSTANT1("android_webview", |
| "BrowserViewRenderer::SetWindowVisibility", |
| TRACE_EVENT_SCOPE_THREAD, |
| "window_visible", |
| window_visible); |
| window_visible_ = window_visible; |
| } |
| |
| void BrowserViewRenderer::OnSizeChanged(int width, int height) { |
| TRACE_EVENT_INSTANT2("android_webview", |
| "BrowserViewRenderer::OnSizeChanged", |
| TRACE_EVENT_SCOPE_THREAD, |
| "width", |
| width, |
| "height", |
| height); |
| size_.SetSize(width, height); |
| if (offscreen_pre_raster_) |
| UpdateMemoryPolicy(); |
| } |
| |
| void BrowserViewRenderer::OnAttachedToWindow(int width, int height) { |
| TRACE_EVENT2("android_webview", |
| "BrowserViewRenderer::OnAttachedToWindow", |
| "width", |
| width, |
| "height", |
| height); |
| attached_to_window_ = true; |
| size_.SetSize(width, height); |
| if (offscreen_pre_raster_) |
| UpdateMemoryPolicy(); |
| } |
| |
| void BrowserViewRenderer::OnDetachedFromWindow() { |
| TRACE_EVENT0("android_webview", "BrowserViewRenderer::OnDetachedFromWindow"); |
| attached_to_window_ = false; |
| ReleaseHardware(); |
| } |
| |
| void BrowserViewRenderer::ZoomBy(float delta) { |
| if (!compositor_) |
| return; |
| compositor_->SynchronouslyZoomBy( |
| delta, gfx::Point(size_.width() / 2, size_.height() / 2)); |
| } |
| |
| void BrowserViewRenderer::OnComputeScroll(base::TimeTicks animation_time) { |
| if (!compositor_) |
| return; |
| TRACE_EVENT0("android_webview", "BrowserViewRenderer::OnComputeScroll"); |
| compositor_->OnComputeScroll(animation_time); |
| } |
| |
| void BrowserViewRenderer::ReleaseHardware() { |
| for (auto compositor_frame_consumer : compositor_frame_consumers_) { |
| ReturnUnusedResource(compositor_frame_consumer->PassUncommittedFrameOnUI()); |
| ReturnResourceFromParent(compositor_frame_consumer); |
| DCHECK(compositor_frame_consumer->ReturnedResourcesEmptyOnUI()); |
| } |
| hardware_enabled_ = false; |
| UpdateMemoryPolicy(); |
| } |
| |
| bool BrowserViewRenderer::IsVisible() const { |
| // Ignore |window_visible_| if |attached_to_window_| is false. |
| return view_visible_ && (!attached_to_window_ || window_visible_); |
| } |
| |
| bool BrowserViewRenderer::IsClientVisible() const { |
| return !is_paused_ && (!attached_to_window_ || window_visible_); |
| } |
| |
| gfx::Rect BrowserViewRenderer::GetScreenRect() const { |
| return gfx::Rect(client_->GetLocationOnScreen(), size_); |
| } |
| |
| void BrowserViewRenderer::DidInitializeCompositor( |
| content::SynchronousCompositor* compositor, |
| int process_id, |
| int routing_id) { |
| TRACE_EVENT_INSTANT0("android_webview", |
| "BrowserViewRenderer::DidInitializeCompositor", |
| TRACE_EVENT_SCOPE_THREAD); |
| DCHECK(compositor); |
| CompositorID compositor_id(process_id, routing_id); |
| // This assumes that a RenderViewHost has at most 1 synchronous compositor |
| // througout its lifetime. |
| DCHECK(compositor_map_.count(compositor_id) == 0); |
| compositor_map_[compositor_id] = compositor; |
| |
| // At this point, the RVHChanged event for the new RVH that contains the |
| // |compositor| might have been fired already, in which case just set the |
| // current compositor with the new compositor. |
| if (!compositor_ && compositor_id.Equals(compositor_id_)) |
| compositor_ = compositor; |
| } |
| |
| void BrowserViewRenderer::DidDestroyCompositor( |
| content::SynchronousCompositor* compositor, |
| int process_id, |
| int routing_id) { |
| TRACE_EVENT_INSTANT0("android_webview", |
| "BrowserViewRenderer::DidDestroyCompositor", |
| TRACE_EVENT_SCOPE_THREAD); |
| CompositorID compositor_id(process_id, routing_id); |
| DCHECK(compositor_map_.count(compositor_id)); |
| if (compositor_ == compositor) { |
| compositor_ = nullptr; |
| } |
| |
| compositor_map_.erase(compositor_id); |
| } |
| |
| void BrowserViewRenderer::SetActiveCompositorID( |
| const CompositorID& compositor_id) { |
| // Set the old compositor memory policy to 0. |
| if (!compositor_id_.Equals(compositor_id) && compositor_) |
| compositor_->SetMemoryPolicy(0u); |
| |
| if (content::SynchronousCompositor* compositor = |
| FindCompositor(compositor_id)) { |
| compositor_ = compositor; |
| UpdateMemoryPolicy(); |
| compositor_->DidChangeRootLayerScrollOffset( |
| gfx::ScrollOffset(scroll_offset_dip_)); |
| } else { |
| compositor_ = nullptr; |
| } |
| compositor_id_ = compositor_id; |
| } |
| |
| void BrowserViewRenderer::SetDipScale(float dip_scale) { |
| dip_scale_ = dip_scale; |
| CHECK_GT(dip_scale_, 0.f); |
| } |
| |
| gfx::Vector2d BrowserViewRenderer::max_scroll_offset() const { |
| DCHECK_GT(dip_scale_, 0.f); |
| return gfx::ToCeiledVector2d(gfx::ScaleVector2d( |
| max_scroll_offset_dip_, dip_scale_ * page_scale_factor_)); |
| } |
| |
| void BrowserViewRenderer::ScrollTo(const gfx::Vector2d& scroll_offset) { |
| gfx::Vector2d max_offset = max_scroll_offset(); |
| gfx::Vector2dF scroll_offset_dip; |
| // To preserve the invariant that scrolling to the maximum physical pixel |
| // value also scrolls to the maximum dip pixel value we transform the physical |
| // offset into the dip offset by using a proportion (instead of dividing by |
| // dip_scale * page_scale_factor). |
| if (max_offset.x()) { |
| scroll_offset_dip.set_x((scroll_offset.x() * max_scroll_offset_dip_.x()) / |
| max_offset.x()); |
| } |
| if (max_offset.y()) { |
| scroll_offset_dip.set_y((scroll_offset.y() * max_scroll_offset_dip_.y()) / |
| max_offset.y()); |
| } |
| |
| DCHECK_LE(0.f, scroll_offset_dip.x()); |
| DCHECK_LE(0.f, scroll_offset_dip.y()); |
| DCHECK(scroll_offset_dip.x() < max_scroll_offset_dip_.x() || |
| scroll_offset_dip.x() - max_scroll_offset_dip_.x() < kEpsilon) |
| << scroll_offset_dip.x() << " " << max_scroll_offset_dip_.x(); |
| DCHECK(scroll_offset_dip.y() < max_scroll_offset_dip_.y() || |
| scroll_offset_dip.y() - max_scroll_offset_dip_.y() < kEpsilon) |
| << scroll_offset_dip.y() << " " << max_scroll_offset_dip_.y(); |
| |
| if (scroll_offset_dip_ == scroll_offset_dip) |
| return; |
| |
| scroll_offset_dip_ = scroll_offset_dip; |
| |
| TRACE_EVENT_INSTANT2("android_webview", |
| "BrowserViewRenderer::ScrollTo", |
| TRACE_EVENT_SCOPE_THREAD, |
| "x", |
| scroll_offset_dip.x(), |
| "y", |
| scroll_offset_dip.y()); |
| |
| if (compositor_) { |
| compositor_->DidChangeRootLayerScrollOffset( |
| gfx::ScrollOffset(scroll_offset_dip_)); |
| } |
| } |
| |
| void BrowserViewRenderer::DidUpdateContent( |
| content::SynchronousCompositor* compositor) { |
| TRACE_EVENT_INSTANT0("android_webview", |
| "BrowserViewRenderer::DidUpdateContent", |
| TRACE_EVENT_SCOPE_THREAD); |
| if (compositor != compositor_) |
| return; |
| |
| clear_view_ = false; |
| if (on_new_picture_enable_) |
| client_->OnNewPicture(); |
| } |
| |
| void BrowserViewRenderer::SetTotalRootLayerScrollOffset( |
| const gfx::Vector2dF& scroll_offset_dip) { |
| if (scroll_offset_dip_ == scroll_offset_dip) |
| return; |
| scroll_offset_dip_ = scroll_offset_dip; |
| |
| gfx::Vector2d max_offset = max_scroll_offset(); |
| gfx::Vector2d scroll_offset; |
| // For an explanation as to why this is done this way see the comment in |
| // BrowserViewRenderer::ScrollTo. |
| if (max_scroll_offset_dip_.x()) { |
| scroll_offset.set_x((scroll_offset_dip.x() * max_offset.x()) / |
| max_scroll_offset_dip_.x()); |
| } |
| |
| if (max_scroll_offset_dip_.y()) { |
| scroll_offset.set_y((scroll_offset_dip.y() * max_offset.y()) / |
| max_scroll_offset_dip_.y()); |
| } |
| |
| DCHECK_LE(0, scroll_offset.x()); |
| DCHECK_LE(0, scroll_offset.y()); |
| DCHECK_LE(scroll_offset.x(), max_offset.x()); |
| DCHECK_LE(scroll_offset.y(), max_offset.y()); |
| |
| client_->ScrollContainerViewTo(scroll_offset); |
| } |
| |
| void BrowserViewRenderer::UpdateRootLayerState( |
| content::SynchronousCompositor* compositor, |
| const gfx::Vector2dF& total_scroll_offset_dip, |
| const gfx::Vector2dF& max_scroll_offset_dip, |
| const gfx::SizeF& scrollable_size_dip, |
| float page_scale_factor, |
| float min_page_scale_factor, |
| float max_page_scale_factor) { |
| if (compositor != compositor_) |
| return; |
| |
| TRACE_EVENT_INSTANT1( |
| "android_webview", |
| "BrowserViewRenderer::UpdateRootLayerState", |
| TRACE_EVENT_SCOPE_THREAD, |
| "state", |
| RootLayerStateAsValue(total_scroll_offset_dip, scrollable_size_dip)); |
| |
| DCHECK_GE(max_scroll_offset_dip.x(), 0.f); |
| DCHECK_GE(max_scroll_offset_dip.y(), 0.f); |
| DCHECK_GT(page_scale_factor, 0.f); |
| // SetDipScale should have been called at least once before this is called. |
| DCHECK_GT(dip_scale_, 0.f); |
| |
| if (max_scroll_offset_dip_ != max_scroll_offset_dip || |
| scrollable_size_dip_ != scrollable_size_dip || |
| page_scale_factor_ != page_scale_factor || |
| min_page_scale_factor_ != min_page_scale_factor || |
| max_page_scale_factor_ != max_page_scale_factor) { |
| max_scroll_offset_dip_ = max_scroll_offset_dip; |
| scrollable_size_dip_ = scrollable_size_dip; |
| page_scale_factor_ = page_scale_factor; |
| min_page_scale_factor_ = min_page_scale_factor; |
| max_page_scale_factor_ = max_page_scale_factor; |
| |
| client_->UpdateScrollState(max_scroll_offset(), scrollable_size_dip, |
| page_scale_factor, min_page_scale_factor, |
| max_page_scale_factor); |
| } |
| SetTotalRootLayerScrollOffset(total_scroll_offset_dip); |
| } |
| |
| std::unique_ptr<base::trace_event::ConvertableToTraceFormat> |
| BrowserViewRenderer::RootLayerStateAsValue( |
| const gfx::Vector2dF& total_scroll_offset_dip, |
| const gfx::SizeF& scrollable_size_dip) { |
| std::unique_ptr<base::trace_event::TracedValue> state( |
| new base::trace_event::TracedValue()); |
| |
| state->SetDouble("total_scroll_offset_dip.x", total_scroll_offset_dip.x()); |
| state->SetDouble("total_scroll_offset_dip.y", total_scroll_offset_dip.y()); |
| |
| state->SetDouble("max_scroll_offset_dip.x", max_scroll_offset_dip_.x()); |
| state->SetDouble("max_scroll_offset_dip.y", max_scroll_offset_dip_.y()); |
| |
| state->SetDouble("scrollable_size_dip.width", scrollable_size_dip.width()); |
| state->SetDouble("scrollable_size_dip.height", scrollable_size_dip.height()); |
| |
| state->SetDouble("page_scale_factor", page_scale_factor_); |
| return std::move(state); |
| } |
| |
| void BrowserViewRenderer::DidOverscroll( |
| content::SynchronousCompositor* compositor, |
| const gfx::Vector2dF& accumulated_overscroll, |
| const gfx::Vector2dF& latest_overscroll_delta, |
| const gfx::Vector2dF& current_fling_velocity) { |
| if (compositor != compositor_) |
| return; |
| |
| const float physical_pixel_scale = dip_scale_ * page_scale_factor_; |
| if (accumulated_overscroll == latest_overscroll_delta) |
| overscroll_rounding_error_ = gfx::Vector2dF(); |
| gfx::Vector2dF scaled_overscroll_delta = |
| gfx::ScaleVector2d(latest_overscroll_delta, physical_pixel_scale); |
| gfx::Vector2d rounded_overscroll_delta = gfx::ToRoundedVector2d( |
| scaled_overscroll_delta + overscroll_rounding_error_); |
| overscroll_rounding_error_ = |
| scaled_overscroll_delta - rounded_overscroll_delta; |
| gfx::Vector2dF fling_velocity_pixels = |
| gfx::ScaleVector2d(current_fling_velocity, physical_pixel_scale); |
| |
| client_->DidOverscroll(rounded_overscroll_delta, fling_velocity_pixels); |
| } |
| |
| void BrowserViewRenderer::PostInvalidate( |
| content::SynchronousCompositor* compositor) { |
| TRACE_EVENT_INSTANT0("android_webview", "BrowserViewRenderer::PostInvalidate", |
| TRACE_EVENT_SCOPE_THREAD); |
| if (compositor != compositor_) |
| return; |
| |
| client_->PostInvalidate(); |
| } |
| |
| bool BrowserViewRenderer::CompositeSW(SkCanvas* canvas) { |
| DCHECK(compositor_); |
| return compositor_->DemandDrawSw(canvas); |
| } |
| |
| std::string BrowserViewRenderer::ToString() const { |
| std::string str; |
| base::StringAppendF(&str, "is_paused: %d ", is_paused_); |
| base::StringAppendF(&str, "view_visible: %d ", view_visible_); |
| base::StringAppendF(&str, "window_visible: %d ", window_visible_); |
| base::StringAppendF(&str, "dip_scale: %f ", dip_scale_); |
| base::StringAppendF(&str, "page_scale_factor: %f ", page_scale_factor_); |
| base::StringAppendF(&str, "view size: %s ", size_.ToString().c_str()); |
| base::StringAppendF(&str, "attached_to_window: %d ", attached_to_window_); |
| base::StringAppendF(&str, |
| "global visible rect: %s ", |
| last_on_draw_global_visible_rect_.ToString().c_str()); |
| base::StringAppendF( |
| &str, "scroll_offset_dip: %s ", scroll_offset_dip_.ToString().c_str()); |
| base::StringAppendF(&str, |
| "overscroll_rounding_error_: %s ", |
| overscroll_rounding_error_.ToString().c_str()); |
| base::StringAppendF( |
| &str, "on_new_picture_enable: %d ", on_new_picture_enable_); |
| base::StringAppendF(&str, "clear_view: %d ", clear_view_); |
| return str; |
| } |
| |
| } // namespace android_webview |
