WebContent: Add IPC for setting 'device pixels per CSS pixel'

Userland/Services/WebContent/ConnectionFromClient.cpp

@@ -1,7 +1,7 @@
 /*
  * Copyright (c) 2020-2022, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
- * Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
+ * Copyright (c) 2021-2023, Linus Groh <linusg@serenityos.org>
  * Copyright (c) 2022, Tobias Christiansen <tobyase@serenityos.org>
  * Copyright (c) 2022, Tim Flynn <trflynn89@serenityos.org>
  *
@@ -530,6 +530,11 @@ void ConnectionFromClient::set_is_scripting_enabled(bool is_scripting_enabled)
     m_page_host->set_is_scripting_enabled(is_scripting_enabled);
 }
 
+void ConnectionFromClient::set_device_pixels_per_css_pixel(float device_pixels_per_css_pixel)
+{
+    m_page_host->set_device_pixels_per_css_pixel(device_pixels_per_css_pixel);
+}
+
 void ConnectionFromClient::set_window_position(Gfx::IntPoint position)
 {
     m_page_host->set_window_position(position.to_type<Web::DevicePixels>());

Userland/Services/WebContent/ConnectionFromClient.h

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
- * Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
+ * Copyright (c) 2021-2023, Linus Groh <linusg@serenityos.org>
  * Copyright (c) 2022, Tim Flynn <trflynn89@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
@@ -76,6 +76,7 @@ private:
     virtual void set_preferred_color_scheme(Web::CSS::PreferredColorScheme const&) override;
     virtual void set_has_focus(bool) override;
     virtual void set_is_scripting_enabled(bool) override;
+    virtual void set_device_pixels_per_css_pixel(float) override;
     virtual void set_window_position(Gfx::IntPoint) override;
     virtual void set_window_size(Gfx::IntSize) override;
     virtual void handle_file_return(i32 error, Optional<IPC::File> const& file, i32 request_id) override;

Userland/Services/WebContent/PageHost.h

@@ -109,7 +109,6 @@ private:
     RefPtr<Gfx::PaletteImpl> m_palette_impl;
     Web::DevicePixelRect m_screen_rect;
     Web::DevicePixelSize m_content_size;
-    // FIXME: Actually set this based on the device's pixel ratio.
     float m_device_pixels_per_css_pixel { 1.0f };
     bool m_should_show_line_box_borders { false };
     bool m_has_focus { false };

Userland/Services/WebContent/WebContentServer.ipc

@@ -56,6 +56,7 @@ endpoint WebContentServer
     set_preferred_color_scheme(Web::CSS::PreferredColorScheme color_scheme) =|
     set_has_focus(bool has_focus) =|
     set_is_scripting_enabled(bool is_scripting_enabled) =|
+    set_device_pixels_per_css_pixel(float device_pixels_per_css_pixel) =|
 
     set_window_position(Gfx::IntPoint position) =|
     set_window_size(Gfx::IntSize size) =|