grund-shell: Barebone implementation of a karm-ui host.

src/libs/karm-app/inputs.h

@@ -125,6 +125,14 @@ struct MouseEvent {
     MouseButton buttons{};
     KeyMod mods{};
     MouseButton button{};
+
+    bool pressed(MouseButton button) const {
+        return (bool)(buttons & button);
+    }
+
+    bool released(MouseButton button) const {
+        return not pressed(button);
+    }
 };
 
 struct MouseLeaveEvent {

src/libs/karm-gfx/cpu/surface.h

@@ -0,0 +1,17 @@
+#pragma once
+
+#include "../buffer.h"
+
+namespace Karm::Gfx {
+
+struct CpuSurface {
+    virtual ~CpuSurface() = default;
+
+    virtual Math::Recti bound() {
+        return mutPixels().bound();
+    }
+
+    virtual MutPixels mutPixels() = 0;
+};
+
+} // namespace Karm::Gfx

src/libs/karm-sys/rpc.h

@@ -186,7 +186,7 @@ struct Rpc : Meta::Pinned {
 
     Rpc(Sys::IpcConnection con)
         : _con(std::move(con)) {
-        // FIXME: Fid a way to do proper cleanup
+        // FIXME: Find a way to do proper cleanup
         Async::detach(_receiverTask(*this), [](Res<> res) {
             logError("receiver task exited: {}", res);
             panic("receiver task exited");

src/srvs/grund-device/ps2.cpp

@@ -182,11 +182,17 @@ Res<> Mouse::decode() {
     if (_buf[0] & 0x20)
         offy -= 0x100;
 
+    App::MouseButton buttons = App::MouseButton::NONE;
+
+    buttons |= ((_buf[0] >> 0) & 1) ? App::MouseButton::LEFT : App::MouseButton::NONE;
+    buttons |= ((_buf[0] >> 1) & 1) ? App::MouseButton::RIGHT : App::MouseButton::NONE;
+    buttons |= ((_buf[0] >> 2) & 1) ? App::MouseButton::MIDDLE : App::MouseButton::NONE;
+
     int scroll = 0;
     if (_hasWheel)
         scroll = (i8)_buf[3];
 
-    auto event = App::makeEvent<App::MouseEvent>(App::MouseEvent::MOVE, 0, scroll, Math::Vec2i{offx, -offy});
+    auto event = App::makeEvent<App::MouseEvent>(App::MouseEvent::MOVE, 0, scroll, Math::Vec2i{offx, -offy}, buttons);
     logInfo("ps2: mouse move {} {} {}", offx, offy, scroll);
     try$(bubble(*event));