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WindowServer: Add support for alpha channel based hit testing

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This enables implementing non-rectangular window shapes, including
non-rectangular window frames.
This commit is contained in:
Tom 2021-02-14 16:42:37 -07:00 • committed by Andreas Kling
parent b3f0a5c917
commit d590e0c946
12 changed files with 107 additions and 12 deletions
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12
Userland/Services/WindowServer/ClientConnection.cpp
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@ -463,6 +463,7 @@ OwnPtr<Messages::WindowServer::CreateWindowResponse> ClientConnection::handle(co
window->recalculate_rect();
}
window->set_opacity(message.opacity());
window->set_alpha_hit_threshold(message.alpha_hit_threshold());
window->set_size_increment(message.size_increment());
window->set_base_size(message.base_size());
window->set_resize_aspect_ratio(message.resize_aspect_ratio());
@ -636,6 +637,17 @@ OwnPtr<Messages::WindowServer::SetWindowHasAlphaChannelResponse> ClientConnectio
return make<Messages::WindowServer::SetWindowHasAlphaChannelResponse>();
}
OwnPtr<Messages::WindowServer::SetWindowAlphaHitThresholdResponse> ClientConnection::handle(const Messages::WindowServer::SetWindowAlphaHitThreshold& message)
{
auto it = m_windows.find(message.window_id());
if (it == m_windows.end()) {
did_misbehave("SetWindowAlphaHitThreshold: Bad window ID");
return {};
}
it->value->set_alpha_hit_threshold(message.threshold());
return make<Messages::WindowServer::SetWindowAlphaHitThresholdResponse>();
}
void ClientConnection::handle(const Messages::WindowServer::WM_SetActiveWindow& message)
{
auto* client = ClientConnection::from_client_id(message.client_id());