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https://github.com/RGBCube/serenity
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LibWeb: Dispatch "wheel" event
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97dc1585b1
commit
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8 changed files with 176 additions and 12 deletions
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@ -19,6 +19,7 @@
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#include <LibWeb/UIEvents/EventNames.h>
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#include <LibWeb/UIEvents/KeyboardEvent.h>
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#include <LibWeb/UIEvents/MouseEvent.h>
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#include <LibWeb/UIEvents/WheelEvent.h>
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namespace Web {
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@ -133,18 +134,51 @@ bool EventHandler::handle_mousewheel(Gfx::IntPoint const& position, unsigned int
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if (modifiers & KeyModifier::Mod_Shift)
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swap(wheel_delta_x, wheel_delta_y);
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// FIXME: Support wheel events in nested browsing contexts.
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bool handled_event = false;
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auto result = paint_root()->hit_test(position.to_type<float>(), Painting::HitTestType::Exact);
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if (result.has_value() && result->paintable->handle_mousewheel({}, position, buttons, modifiers, wheel_delta_x, wheel_delta_y))
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return true;
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if (auto* page = m_browsing_context.page()) {
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page->client().page_did_request_scroll(wheel_delta_x * 20, wheel_delta_y * 20);
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return true;
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RefPtr<Painting::Paintable> paintable;
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if (m_mouse_event_tracking_layout_node) {
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paintable = m_mouse_event_tracking_layout_node->paintable();
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} else {
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if (auto result = paint_root()->hit_test(position.to_type<float>(), Painting::HitTestType::Exact); result.has_value())
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paintable = result->paintable;
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}
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return false;
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if (paintable) {
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paintable->handle_mousewheel({}, position, buttons, modifiers, wheel_delta_x, wheel_delta_y);
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JS::GCPtr<DOM::Node> node = paintable->mouse_event_target();
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if (!node)
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node = paintable->dom_node();
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if (node) {
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// FIXME: Support wheel events in nested browsing contexts.
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if (is<HTML::HTMLIFrameElement>(*node)) {
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return false;
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}
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// Search for the first parent of the hit target that's an element.
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auto* layout_node = &paintable->layout_node();
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while (layout_node && node && !node->is_element() && layout_node->parent()) {
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layout_node = layout_node->parent();
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node = layout_node->dom_node();
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}
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if (!node || !layout_node) {
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return false;
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}
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auto offset = compute_mouse_event_offset(position, *layout_node);
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if (node->dispatch_event(*UIEvents::WheelEvent::create_from_platform_event(node->realm(), UIEvents::EventNames::wheel, offset.x(), offset.y(), position.x(), position.y(), wheel_delta_x, wheel_delta_y))) {
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if (auto* page = m_browsing_context.page()) {
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page->client().page_did_request_scroll(wheel_delta_x * 20, wheel_delta_y * 20);
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}
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}
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handled_event = true;
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}
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}
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return handled_event;
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}
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bool EventHandler::handle_mouseup(Gfx::IntPoint const& position, unsigned button, unsigned modifiers)
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