Support scrolling by dragging scrollbars

1 files changed, 19 insertions, 2 deletions

diff --git a/src/widget/widget.c b/src/widget/widget.c
index ef79ac4..ebcaf10 100644
--- a/src/widget/widget.c
+++ b/src/widget/widget.c
@@ -63,11 +63,28 @@ uiPtr uiMakeTablePtr(uiTable* table) {
   return (uiPtr){.type = uiTypeTable, .table = table};
 }
 
-static uiPtr uiMakeWidgetPtr(uiWidget* widget) {
+uiPtr uiMakeWidgetPtr(uiWidget* widget) {
   assert(widget);
-  return (uiPtr){.type = widget->type, .widget = widget};
+  switch (widget->type) {
+  case uiTypeButton:
+    return uiMakeButtonPtr((uiButton*)widget);
+  case uiTypeFrame:
+    return uiMakeFramePtr((uiFrame*)widget);
+  case uiTypeLabel:
+    return uiMakeLabelPtr((uiLabel*)widget);
+  case uiTypeTable:
+    return uiMakeTablePtr((uiTable*)widget);
+  default:
+    ASSERT(false);
+    break;
+  }
+  return (uiPtr){0};
 }
 
+uiPtr uiNullptr(void) { return (uiPtr){0}; }
+
+bool uiIsNullptr(uiPtr ptr) { return ptr.widget == 0; }
+
 uiButton* uiGetButtonPtr(uiPtr ptr) {
   assert(ptr.type == uiTypeButton);
   assert(ptr.button);