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LibWeb: Check paintable of target against null in mousewheel handling

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Andi Gallo 2023-08-09 22:36:46 +00:00 committed by Andreas Kling
parent ae7a0c43a9
commit 670bbf24e5
Notes: sideshowbarker 2024-07-17 08:45:34 +09:00 
Author: https://github.com/axgallo
Commit: https://github.com/SerenityOS/serenity/commit/670bbf24e5
Pull-request: https://github.com/SerenityOS/serenity/pull/20469
1 changed files with 9 additions and 9 deletions
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18
Userland/Libraries/LibWeb/Page/EventHandler.cpp
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@ -163,16 +163,16 @@ bool EventHandler::handle_mousewheel(CSSPixelPoint position, unsigned button, un
if (auto result = target_for_mouse_position(position); result.has_value())
paintable = result->paintable;
auto* containing_block = paintable->containing_block();
while (containing_block) {
if (containing_block->is_user_scrollable()) {
const_cast<Painting::PaintableBox*>(containing_block->paintable_box())->handle_mousewheel({}, position, buttons, modifiers, wheel_delta_x * scroll_step_size, wheel_delta_y * scroll_step_size);
break;
}
containing_block = containing_block->containing_block();
}
if (paintable) {
auto* containing_block = paintable->containing_block();
while (containing_block) {
if (containing_block->is_user_scrollable()) {
const_cast<Painting::PaintableBox*>(containing_block->paintable_box())->handle_mousewheel({}, position, buttons, modifiers, wheel_delta_x * scroll_step_size, wheel_delta_y * scroll_step_size);
break;
}
containing_block = containing_block->containing_block();
}
paintable->handle_mousewheel({}, position, buttons, modifiers, wheel_delta_x, wheel_delta_y);
auto node = dom_node_for_event_dispatch(*paintable);