mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-05-09 00:22:36 +02:00
0e958ca8d5
Instead of copying the Bitmap that wraps the IOSurface, we can just present the IOSurface directly. This significantly reduces CPU usage in the UI process, particularly at high refresh rates such as 120Hz where it would saturate a full CPU core. This is done by using CAMetalLayer and blitting the IOSurface to the next drawable buffer, which handles triple buffering, locking the IOSurface and vsync automatically. This also allows the Metal HUD to work, but the only accurate stat is the frame intervals/FPS because it's in the UI layer, not WebContent. However, that's still useful to detect frame drops.
70 lines
2.1 KiB
C++
70 lines
2.1 KiB
C++
/*
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* Copyright (c) 2023-2024, Tim Flynn <trflynn89@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Vector.h>
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#include <LibGfx/Point.h>
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#include <LibGfx/Rect.h>
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#include <LibGfx/Size.h>
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#include <LibWeb/Page/InputEvent.h>
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#include <LibWebView/ViewImplementation.h>
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namespace Ladybird {
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class WebViewBridge final : public WebView::ViewImplementation {
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public:
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static ErrorOr<NonnullOwnPtr<WebViewBridge>> create(Vector<Web::DevicePixelRect> screen_rects, double device_pixel_ratio, u64 maximum_frames_per_second);
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virtual ~WebViewBridge() override;
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virtual void initialize_client(CreateNewClient = CreateNewClient::Yes) override;
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void initialize_client_as_child(WebViewBridge& parent, u64 page_index);
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void set_device_pixel_ratio(double device_pixel_ratio);
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void set_zoom_level(double zoom_level);
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double inverse_device_pixel_ratio() const { return 1.0 / device_pixel_ratio(); }
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void set_viewport_rect(Gfx::IntRect);
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void set_maximum_frames_per_second(u64 maximum_frames_per_second);
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void update_palette();
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void enqueue_input_event(Web::MouseEvent);
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void enqueue_input_event(Web::DragEvent);
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void enqueue_input_event(Web::KeyEvent);
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void enqueue_input_event(Web::PinchEvent);
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struct Paintable {
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Gfx::Bitmap const& bitmap;
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Gfx::IntSize bitmap_size;
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void* iosurface_ref { nullptr };
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};
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Optional<Paintable> paintable();
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Function<void()> on_zoom_level_changed;
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auto& pinch_state() { return m_pinch_state; }
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private:
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WebViewBridge(Vector<Web::DevicePixelRect> screen_rects, double device_pixel_ratio, u64 maximum_frames_per_second);
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virtual void update_zoom() override;
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virtual Web::DevicePixelSize viewport_size() const override;
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virtual Gfx::IntPoint to_content_position(Gfx::IntPoint widget_position) const override;
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virtual Gfx::IntPoint to_widget_position(Gfx::IntPoint content_position) const override;
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Vector<Web::DevicePixelRect> m_screen_rects;
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Gfx::IntSize m_viewport_size;
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struct PinchState {
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double previous_scale { 1.0 };
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};
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Optional<PinchState> m_pinch_state;
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};
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}
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