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Ladybird: Calculate the 'physical pixels' for screens

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Previously the 'device independent pixels' (which consider scaling)
were used, and then scaling would be applied again when calculating the
screen width for CSS.
This commit is contained in:
Jamie Mansfield 2024-04-21 21:41:00 +01:00 committed by Andreas Kling
parent d4f08fb0a1
commit b7bd3fd920
Notes: sideshowbarker 2024-07-17 03:51:15 +09:00 
Author: https://github.com/jamierocks
Commit: https://github.com/SerenityOS/serenity/commit/b7bd3fd920
Pull-request: https://github.com/SerenityOS/serenity/pull/24063
1 changed files with 4 additions and 1 deletions
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5
Ladybird/Qt/WebContentView.cpp
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@ -568,8 +568,11 @@ void WebContentView::initialize_client(WebView::ViewImplementation::CreateNewCli
if (!screens.empty()) {
Vector<Web::DevicePixelRect> screen_rects;
for (auto const& screen : screens) {
// NOTE: QScreen::geometry() returns the 'device-independent pixels', we multiply
// by the device pixel ratio to get the 'physical pixels' of the display.
auto geometry = screen->geometry();
screen_rects.append(Web::DevicePixelRect(geometry.x(), geometry.y(), geometry.width(), geometry.height()));
auto device_pixel_ratio = screen->devicePixelRatio();
screen_rects.append(Web::DevicePixelRect(geometry.x(), geometry.y(), geometry.width() * device_pixel_ratio, geometry.height() * device_pixel_ratio));
}
// FIXME: Update the screens again when QGuiApplication::screenAdded/Removed signals are emitted