Temporary merge of IFrame rendering into master

src/display_list.rs

@@ -345,7 +345,6 @@ fn insert_constraints_into_solver<'a, T: Layout>(
 
         // inefficient for now, but prevents memory leak
         dom_solver.clear_all_constraints();
-
         let constraints: Vec<Constraint> = {
             let borrow = &*ui_description.ui_descr_arena.borrow();
             rectangles.linear_iter().flat_map(|rect_idx| {
@@ -356,7 +355,7 @@ fn insert_constraints_into_solver<'a, T: Layout>(
             }).collect()
         };
 
-        dom_solver.insert_css_constraints(&constraints);
+        dom_solver.insert_css_constraints(constraints);
 
         // If we push or pop constraints that means we also need to re-layout the window
         has_window_size_changed = true;

src/id_tree.rs

@@ -258,6 +258,7 @@ trait GetPairMut<T> {
 }
 
 impl<T> GetPairMut<T> for Vec<T> {
+    #[allow(unused_variables)]
     fn get_pair_mut(&mut self, a: usize, b: usize, same_index_error_message: &'static str)
     -> (&mut T, &mut T)
     {

src/ui_solver.rs

@@ -141,9 +141,9 @@ impl DomSolver {
         changeset
     }
 
-    pub(crate) fn insert_css_constraints(&mut self, constraints: &[Constraint]) {
+    pub(crate) fn insert_css_constraints(&mut self, constraints: Vec<Constraint>) {
         // TODO: Solver currently locks up here when inserting 5000 constraints
-        self.solver.add_constraints(constraints).unwrap();
+        self.solver.add_constraints(&constraints).unwrap();
     }
 
     /// Notifies the solver that the window size has changed

src/widgets/table_view.rs

@@ -26,8 +26,9 @@ impl Default for TableViewState {
     fn default() -> Self {
         Self {
             work_sheet: Worksheet::default(),
-            column_width: 50.0,
-            row_height: 10.0,
+            // warning: 50 / 100 doesn't work - too many constraints, slow rendering, need to debug this!
+            column_width: 500.0,
+            row_height: 100.0,
             selected_cell: None,
         }
     }
@@ -61,7 +62,7 @@ fn render_table_callback<T: Layout>(ptr: &StackCheckedPointer<T>, info: WindowIn
     unsafe { ptr.invoke_mut_iframe(render_table, info, dimensions) }
 }
 
-fn render_table<T: Layout>(state: &mut TableViewState, info: WindowInfo<T>, dimensions: HidpiAdjustedBounds)
+fn render_table<T: Layout>(state: &mut TableViewState, _info: WindowInfo<T>, dimensions: HidpiAdjustedBounds)
 -> Dom<T>
 {
     let necessary_columns = (dimensions.logical_size.width as f32 / state.column_width).ceil() as usize;