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LibWeb: Defer mouse events from TextNode to Label

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A label's format is: <label>Label text</label>

So, a TextNode is created as a child of the Label node, and EventHandler
will send events to the TextNode. This changes TextNode to accept mouse
events if its parent is a Label, and to forward those events upward.
This commit is contained in:
Timothy Flynn 2021-04-03 21:48:05 -04:00 • committed by Andreas Kling
parent d8106dda73
commit e1b5613142
5 changed files with 41 additions and 8 deletions
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29
Userland/Libraries/LibWeb/Layout/TextNode.cpp
View file

@ -30,6 +30,7 @@
#include <LibWeb/DOM/Document.h>
#include <LibWeb/Layout/BlockBox.h>
#include <LibWeb/Layout/InlineFormattingContext.h>
#include <LibWeb/Layout/Label.h>
#include <LibWeb/Layout/TextNode.h>
#include <LibWeb/Page/Frame.h>
#include <ctype.h>
@ -306,4 +307,32 @@ void TextNode::split_into_lines(InlineFormattingContext& context, LayoutMode lay
split_into_lines_by_rules(context, layout_mode, do_collapse, do_wrap_lines, do_wrap_breaks);
}
bool TextNode::wants_mouse_events() const
{
return parent() && is<Label>(parent());
}
void TextNode::handle_mousedown(Badge<EventHandler>, const Gfx::IntPoint& position, unsigned button, unsigned)
{
if (!parent() || !is<Label>(*parent()))
return;
downcast<Label>(*parent()).handle_mousedown_on_label({}, position, button);
frame().event_handler().set_mouse_event_tracking_layout_node(this);
}
void TextNode::handle_mouseup(Badge<EventHandler>, const Gfx::IntPoint& position, unsigned button, unsigned)
{
if (!parent() || !is<Label>(*parent()))
return;
downcast<Label>(*parent()).handle_mouseup_on_label({}, position, button);
frame().event_handler().set_mouse_event_tracking_layout_node(nullptr);
}
void TextNode::handle_mousemove(Badge<EventHandler>, const Gfx::IntPoint& position, unsigned button, unsigned)
{
if (!parent() || !is<Label>(*parent()))
return;
downcast<Label>(*parent()).handle_mousemove_on_label({}, position, button);
}
}