Basic i32 ID stack manipulation

CHANGELOG.markdown

@@ -6,6 +6,7 @@
 
 - Support for progress bar
 - Support for push/pop item width
+- Support for ID stack manipulation (integer values)
 - `ImVec4::zero()`
 - `Into` array and tuple conversions for ImVec2 and ImVec4
 

src/lib.rs

@@ -409,7 +409,7 @@ impl<'ui> Ui<'ui> {
     /// The current process is aborted if the item width stack is empty.
     pub fn pop_item_width(&self) { unsafe { imgui_sys::igPopItemWidth() } }
 
-    /// Runs a function with a value temporarily pushed to the item width stack.
+    /// Runs a function after temporarily pushing a value to the item width stack.
     pub fn with_item_width<F>(&self, width: f32, f: F) where F: FnOnce() {
         self.push_item_width(width);
         f();
@@ -446,6 +446,29 @@ impl<'ui> Ui<'ui> {
     pub fn get_columns_count(&self) -> i32 { unsafe { imgui_sys::igGetColumnsCount() } }
 }
 
+// ID scopes
+impl<'ui> Ui<'ui> {
+    /// Pushes an identifier to the ID stack.
+    pub fn push_id(&self, id: i32) {
+        unsafe { imgui_sys::igPushIdInt(id) };
+    }
+
+    /// Pops an identifier from the ID stack.
+    ///
+    /// # Aborts
+    /// The current process is aborted if the ID stack is empty.
+    pub fn pop_id(&self) {
+        unsafe { imgui_sys::igPopId() };
+    }
+
+    /// Runs a function after temporarily pushing a value to the ID stack.
+    pub fn with_id<F>(&self, id: i32, f: F) where F: FnOnce() {
+        self.push_id(id);
+        f();
+        self.pop_id();
+    }
+}
+
 // Widgets
 impl<'ui> Ui<'ui> {
     pub fn text<'p>(&self, text: ImStr<'p>) {