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LibWeb: Let subframes propagate paint invalidations via host element

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When a paint invalidation occurs inside a subframe, it bubbles up to
Frame::set_needs_display(). From there, we call PageView if this is
the main frame, or otherwise invalidate the subframe host element.
This commit is contained in:
Andreas Kling 2020-06-07 14:56:29 +02:00
parent 59f9b32a44
commit 3ae3729b4e
5 changed files with 30 additions and 17 deletions
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30
Libraries/LibWeb/PageView.cpp
View file

@ -72,15 +72,6 @@ PageView::PageView()
if (on_load_start)
on_load_start(url);
};
main_frame().on_set_needs_display = [this](auto& content_rect) {
if (content_rect.is_empty()) {
update();
return;
}
Gfx::Rect adjusted_rect = content_rect;
adjusted_rect.set_location(to_widget_position(content_rect.location()));
update(adjusted_rect);
};
set_should_hide_unnecessary_scrollbars(true);
set_background_role(ColorRole::Base);
@ -334,6 +325,22 @@ Gfx::Point PageView::to_screen_position(const Web::Frame& frame, const Gfx::Poin
return screen_relative_rect().location().translated(offset).translated(frame_position);
}
Gfx::Rect PageView::to_widget_rect(const Web::Frame& frame, const Gfx::Rect& frame_rect) const
{
Gfx::Point offset;
for (auto* f = &frame; f; f = f->parent()) {
if (!f->host_element())
return {};
if (!f->host_element()->layout_node())
return {};
auto f_position = f->host_element()->layout_node()->box_type_agnostic_position().to_int_point();
offset.move_by(f_position);
}
auto content_position = frame_rect.location().translated(offset);
return { to_widget_position(content_position), frame_rect.size() };
}
void PageView::notify_link_context_menu_request(Badge<EventHandler>, Web::Frame& frame, const Gfx::Point& content_position, const String& href, const String&, unsigned)
{
if (on_link_context_menu_request)
@ -356,4 +363,9 @@ void PageView::notify_tooltip_area_leave(Badge<EventHandler>, Web::Frame&)
GUI::Application::the().hide_tooltip();
}
void PageView::notify_needs_display(Badge<Web::Frame>, Web::Frame& frame, const Gfx::Rect& rect)
{
update(to_widget_rect(frame, rect));
}
}