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38164411f0
Some Wayland compositors have support of fractional-scale-v1 protocol. The protocol allows compositor to announce a preferred fractional scale on a per-wl_surface basis. Qt forwards these Wayland events to an application using a usual DevicePixelRatioChange event. However, in contrast to the other platforms, this DevicePixelRatioChange event is issued directly on widgets and not screens. Additionally, the exact fractional scale is stored in QWindow object and not the current screen. Note that in theory it is possible to obtain per-screen fractional scaling on Wayland by interpolating data provided by wl_output and xdg_output events but qtwayland does not do that. If fractional-scale-v1 is not available, qtwayland will still fire per-Widget DevicePixelRatioChange events, but, obviously, with the per-screen possibly larger ceiled scaling. This whole thing makes handling DPI changes on Wayland really simple. All we need to do is to intercept DevicePixelRatioChange events firing on QWindow objects and call the old device_pixel_ratio_changed handler with the window's devicePixelRatio(). The only caveat here is not forget to always set QWidget's parent before calling devicePixelRatio() on it.
104 lines
3.1 KiB
C++
104 lines
3.1 KiB
C++
/*
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* Copyright (c) 2022-2023, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2023, Linus Groh <linusg@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/ByteString.h>
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#include <AK/Function.h>
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#include <AK/HashMap.h>
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#include <AK/OwnPtr.h>
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#include <AK/URL.h>
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#include <Ladybird/Types.h>
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#include <LibGfx/Forward.h>
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#include <LibGfx/Rect.h>
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#include <LibGfx/StandardCursor.h>
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#include <LibWeb/CSS/PreferredColorScheme.h>
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#include <LibWeb/CSS/Selector.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/HTML/ActivateTab.h>
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#include <LibWebView/ViewImplementation.h>
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#include <QAbstractScrollArea>
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#include <QUrl>
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class QTextEdit;
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class QLineEdit;
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namespace WebView {
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class WebContentClient;
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}
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using WebView::WebContentClient;
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namespace Ladybird {
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class Tab;
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class WebContentView final
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: public QAbstractScrollArea
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, public WebView::ViewImplementation {
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Q_OBJECT
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public:
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WebContentView(QWidget* window, WebContentOptions const&, StringView webdriver_content_ipc_path, RefPtr<WebView::WebContentClient> parent_client = nullptr, size_t page_index = 0);
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virtual ~WebContentView() override;
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Function<String(const AK::URL&, Web::HTML::ActivateTab)> on_tab_open_request;
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virtual void paintEvent(QPaintEvent*) override;
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virtual void resizeEvent(QResizeEvent*) override;
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virtual void mouseMoveEvent(QMouseEvent*) override;
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virtual void mousePressEvent(QMouseEvent*) override;
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virtual void mouseReleaseEvent(QMouseEvent*) override;
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virtual void wheelEvent(QWheelEvent*) override;
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virtual void mouseDoubleClickEvent(QMouseEvent*) override;
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virtual void dragEnterEvent(QDragEnterEvent*) override;
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virtual void dropEvent(QDropEvent*) override;
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virtual void keyPressEvent(QKeyEvent* event) override;
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virtual void keyReleaseEvent(QKeyEvent* event) override;
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virtual void showEvent(QShowEvent*) override;
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virtual void hideEvent(QHideEvent*) override;
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virtual void focusInEvent(QFocusEvent*) override;
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virtual void focusOutEvent(QFocusEvent*) override;
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virtual bool event(QEvent*) override;
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ErrorOr<String> dump_layout_tree();
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void set_viewport_rect(Gfx::IntRect);
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void set_window_size(Gfx::IntSize);
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void set_window_position(Gfx::IntPoint);
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void set_device_pixel_ratio(double);
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enum class PaletteMode {
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Default,
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Dark,
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};
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void update_palette(PaletteMode = PaletteMode::Default);
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using ViewImplementation::client;
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signals:
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void urls_dropped(QList<QUrl> const&);
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private:
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// ^WebView::ViewImplementation
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virtual void initialize_client(CreateNewClient) override;
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virtual void update_zoom() override;
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virtual Web::DevicePixelRect viewport_rect() 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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void update_viewport_rect();
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void update_cursor(Gfx::StandardCursor cursor);
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bool m_should_show_line_box_borders { false };
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Gfx::IntRect m_viewport_rect;
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WebContentOptions m_web_content_options;
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StringView m_webdriver_content_ipc_path;
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};
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}
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