Fix table placement within containers (#43)

Fix layout and size reporting if placed within container with
non-default layout and/or margins.

* Closes #41

Author: agalakhov

egui_table/src/split_scroll.rs

@@ -72,6 +72,7 @@ impl SplitScroll {
             let mut rect = ui.cursor();
             rect.max = rect.min + fixed_size + scroll_outer_size;
             ui.shrink_clip_rect(rect);
+            let rect = rect;
 
             let bottom_right_rect = Rect::from_min_max(rect.min + fixed_size, rect.max);
 
@@ -148,6 +149,7 @@ impl SplitScroll {
             }
 
             delegate.finish(ui);
+            ui.advance_cursor_after_rect(rect);
         });
     }
 }

egui_table/src/table.rs

@@ -4,8 +4,8 @@ use std::{
 };
 
 use egui::{
-    Align, Context, Id, IdMap, NumExt as _, Rangef, Rect, Response, Ui, UiBuilder, Vec2, Vec2b,
-    vec2,
+    Align, Context, Id, IdMap, Layout, NumExt as _, Rangef, Rect, Response, Ui, UiBuilder, Vec2,
+    Vec2b, vec2,
 };
 use vec1::Vec1;
 
@@ -418,7 +418,7 @@ impl Table {
             self.headers.iter().map(|h| h.height).sum(),
         );
 
-        let mut ui_builder = UiBuilder::new();
+        let mut ui_builder = UiBuilder::new().layout(Layout::top_down(Align::Min));
         if do_full_sizing_pass {
             ui_builder = ui_builder.sizing_pass().invisible();
             ui.ctx().request_discard("Full egui_table sizing");