Route canvas input policy through platform services

src/app_events.cpp

@@ -211,6 +211,19 @@ void App::start_platform_sonarpen()
     active_platform_services().start_sonarpen();
 }
 
+bool App::draws_canvas_tip_for_input(kEventSource source, kEventType type) const
+{
+    return active_platform_services().draws_canvas_tip_for_pointer(
+        source == kEventSource::Mouse,
+        source == kEventSource::Stylus,
+        type == kEventType::MouseUpL);
+}
+
+float App::adjust_canvas_input_pressure(float pressure) const
+{
+    return active_platform_services().adjust_canvas_input_pressure(pressure);
+}
+
 void App::pick_dir(std::function<void(std::string path)> callback)
 {
     redraw = true;