From a985f74035a29b5511d5ef5662eac7fbe5219a2b Mon Sep 17 00:00:00 2001
From: Richard Bates <richard@dreamrealityinteractive.com>
Date: Mon, 18 Sep 2023 14:09:34 +0100
Subject: [PATCH] Radio button support (#31)

---
 example/example.script        | 13 +++++++++++++
 imgui/api/imgui.script_api    | 17 +++++++++++++++++
 imgui/src/extension_imgui.cpp | 13 +++++++++++++
 3 files changed, 43 insertions(+)

diff --git a/example/example.script b/example/example.script
index 91b2e65..cf2e7ab 100644
--- a/example/example.script
+++ b/example/example.script
@@ -54,6 +54,7 @@ end
 
 function init(self)
 	self.counter = 0
+	self.radio = 1
 	self.show_demo_window = false
 	self.show_close_window = false
 	self.show_live_data = false
@@ -112,6 +113,18 @@ local function update_tab1(self)
 
 	imgui.separator()
 
+	if imgui.radio_button("Option 1", self.radio == 1) then
+		self.radio  = 1
+	end
+	if imgui.radio_button("Option 2", self.radio == 2) then
+		self.radio  = 2
+	end
+	if imgui.radio_button("Option 3", self.radio == 3) then
+		self.radio  = 3
+	end
+
+	imgui.separator()
+
 	if imgui.button("Button") then
 		self.counter = self.counter + 1
 	end
diff --git a/imgui/api/imgui.script_api b/imgui/api/imgui.script_api
index de987f0..7d2889d 100644
--- a/imgui/api/imgui.script_api
+++ b/imgui/api/imgui.script_api
@@ -859,6 +859,23 @@
       - name: pushed
         type: boolean
 
+#*****************************************************************************************************
+
+  - name: radio_button
+    type: function
+
+    parameters:
+      - name: text
+        type: string
+      - name: checked
+        type: boolean
+
+    return:
+      - name: changed
+        type: boolean
+      - name: pushed
+        type: boolean
+
 #*****************************************************************************************************
 #***** MENU BAR **************************************************************************************
 #*****************************************************************************************************
diff --git a/imgui/src/extension_imgui.cpp b/imgui/src/extension_imgui.cpp
index c39813b..24bae20 100644
--- a/imgui/src/extension_imgui.cpp
+++ b/imgui/src/extension_imgui.cpp
@@ -1285,6 +1285,18 @@ static int imgui_Checkbox(lua_State* L)
     return 2;
 }
 
+static int imgui_RadioButton(lua_State* L)
+{
+    DM_LUA_STACK_CHECK(L, 2);
+    imgui_NewFrame();
+    const char* text = luaL_checkstring(L, 1);
+    bool checked = lua_toboolean(L, 2);
+    bool changed = ImGui::RadioButton(text, checked);
+    lua_pushboolean(L, changed);
+    lua_pushboolean(L, checked);
+    return 2;
+}
+
 static int imgui_BeginMenuBar(lua_State* L)
 {
     DM_LUA_STACK_CHECK(L, 1);
@@ -2117,6 +2129,7 @@ static const luaL_reg Module_methods[] =
     {"button", imgui_Button},
     {"button_image", imgui_ButtonImage},
     {"checkbox", imgui_Checkbox},
+    {"radio_button", imgui_RadioButton},
     {"begin_menu_bar", imgui_BeginMenuBar},
     {"end_menu_bar", imgui_EndMenuBar},
     {"begin_main_menu_bar", imgui_BeginMainMenuBar},