added options to selectable (#137)

src/DearImGui.hs

@@ -190,6 +190,9 @@ module DearImGui
 
     -- ** Selectables
   , selectable
+  , selectableWith
+  , SelectableOptions(..)
+  , defSelectableOptions
 
     -- ** List Boxes
   , listBox
@@ -1284,10 +1287,25 @@ treePush label = liftIO do
   withCString label Raw.treePush
 
 
--- | Wraps @ImGui::Selectable()@.
+-- | Wraps @ImGui::Selectable()@ with default options.
 selectable :: MonadIO m => String -> m Bool
-selectable label = liftIO do
+selectable = selectableWith defSelectableOptions
-  withCString label Raw.selectable
+
+data SelectableOptions = SelectableOptions
+                       { selected :: Bool
+                       , flags :: ImGuiSelectableFlags
+                       , size :: ImVec2
+                       } deriving Show
+
+defSelectableOptions :: SelectableOptions
+defSelectableOptions = SelectableOptions False (ImGuiSelectableFlags 0) (ImVec2 0 0)
+
+-- | Wraps @ImGui::Selectable()@ with explicit options.
+selectableWith :: MonadIO m => SelectableOptions -> String -> m Bool
+selectableWith (SelectableOptions selected flags size) label = liftIO do
+  with size $ \sizePtr ->
+    withCString label $ \labelPtr -> 
+      Raw.selectable labelPtr (bool 0 1 selected) flags sizePtr
 
 
 listBox :: (MonadIO m, HasGetter ref Int, HasSetter ref Int) => String -> ref -> [String] -> m Bool

src/DearImGui/Raw.hs

@@ -1086,10 +1086,17 @@ treePop = liftIO do
   [C.exp| void { TreePop() } |]
 
 
+-- -- | Wraps @ImGui::Selectable()@.
+-- selectable :: (MonadIO m) => CString -> m Bool
+-- selectable labelPtr = liftIO do
+--   (0 /=) <$> [C.exp| bool { Selectable($(char* labelPtr)) } |]
+
+
 -- | Wraps @ImGui::Selectable()@.
-selectable :: (MonadIO m) => CString -> m Bool
+selectable :: (MonadIO m) => CString -> CBool -> ImGuiSelectableFlags -> Ptr ImVec2 -> m Bool
-selectable labelPtr = liftIO do
+selectable labelPtr selected flags size = liftIO do
-  (0 /=) <$> [C.exp| bool { Selectable($(char* labelPtr)) } |]
+  (0 /=) <$> [C.exp| bool { Selectable($(char* labelPtr), $(bool selected), $(ImGuiSelectableFlags flags), *$(ImVec2 *size)) } |]
+
 
 
 -- | Wraps @ImGui::ListBox()@.