Switch from Qt6 to Slint

ui/Backend.slint

@@ -0,0 +1,55 @@
+import { Date, Time } from "std-widgets.slint";
+
+
+
+export struct TaskData {
+	sourceId: int,
+	id: int,
+    title: string,
+    checked: bool,
+	tags: [string],
+}
+
+export struct Event {
+	sourceId: int,
+	id: int,
+	title: string,
+	startsAt: Time,
+	endsAt: Time,
+	tasks: [TaskData],
+}
+
+export struct Day {
+	sourceId: int,
+	id: int,
+	date: Date,
+	events: [Event],
+	tasks: [TaskData],
+	isLate: bool,
+	isToday: bool
+}
+
+struct OpenNewTaskFormParams {
+	eventSourceId: int,
+	eventId: int,
+}
+
+export global Backend  {
+    in-out property<[string]> resources;
+	in-out property<[string]> tags;
+	in-out property<[Day]> visible_tasks;
+
+	callback task_clicked(int, int);
+	callback source_clicked(int);
+	callback tag_clicked(int);
+	
+	callback open_new_task_form(OpenNewTaskFormParams);
+	callback open_edit_task_form(int, int);
+	callback open_new_event_form();
+	callback open_edit_event_form(int, int);
+	callback toggle_show_completed_tasks();
+	callback delete_task_clicked(int, int);
+	callback delete_event_clicked(int, int);
+
+	pure callback formatDate(Date) -> string;
+}