From 8b991ae051939b568404a5890545b99274c2b466 Mon Sep 17 00:00:00 2001
From: Santiago <san@san.san>
Date: Sat, 19 Aug 2023 15:22:26 +0200
Subject: [PATCH] Add glfwIsWindowLightTheme function

---
 include/GLFW/glfw3.h | 2 ++
 src/internal.h       | 1 +
 src/win32_window.c   | 1 +
 src/window.c         | 9 +++++++++
 4 files changed, 13 insertions(+)

diff --git a/include/GLFW/glfw3.h b/include/GLFW/glfw3.h
index b1e5cf2b..c029787a 100644
--- a/include/GLFW/glfw3.h
+++ b/include/GLFW/glfw3.h
@@ -3388,6 +3388,8 @@ GLFWAPI void glfwGetWindowPos(GLFWwindow* window, int* xpos, int* ypos);
  */
 GLFWAPI void glfwSetWindowPos(GLFWwindow* window, int xpos, int ypos);
 
+GLFWAPI int glfwIsWindowLightTheme(GLFWwindow* window);
+
 /*! @brief Retrieves the size of the content area of the specified window.
  *
  *  This function retrieves the size, in screen coordinates, of the content area
diff --git a/src/internal.h b/src/internal.h
index 9dace49c..b3a2962a 100644
--- a/src/internal.h
+++ b/src/internal.h
@@ -533,6 +533,7 @@ struct _GLFWwindow
     GLFWbool            focusOnShow;
     GLFWbool            mousePassthrough;
     GLFWbool            shouldClose;
+    GLFWbool            isLightTheme;
     void*               userPointer;
     GLFWbool            doublebuffer;
     GLFWvidmode         videoMode;
diff --git a/src/win32_window.c b/src/win32_window.c
index e029fc7a..379bb64c 100644
--- a/src/win32_window.c
+++ b/src/win32_window.c
@@ -1372,6 +1372,7 @@ static int createNativeWindow(_GLFWwindow* window,
         should_use_light_mode = wndconfig->theme == GLFW_THEME_LIGHT;
 
     _glfwSetWindowTheme(!should_use_light_mode, window->win32.handle);
+    window->isLightTheme = should_use_light_mode ? GLFW_TRUE : GLFW_FALSE;
 
     _glfw_free(wideTitle);
 
diff --git a/src/window.c b/src/window.c
index 5f212a98..9d399bfe 100644
--- a/src/window.c
+++ b/src/window.c
@@ -588,6 +588,15 @@ GLFWAPI void glfwSetWindowPos(GLFWwindow* handle, int xpos, int ypos)
     _glfw.platform.setWindowPos(window, xpos, ypos);
 }
 
+GLFWAPI int glfwIsWindowLightTheme(GLFWwindow* handle)
+{
+    _GLFWwindow* window = (_GLFWwindow*)handle;
+    assert(window != NULL);
+
+    _GLFW_REQUIRE_INIT_OR_RETURN(0);
+    return window->isLightTheme;
+}
+
 GLFWAPI void glfwGetWindowSize(GLFWwindow* handle, int* width, int* height)
 {
     _GLFWwindow* window = (_GLFWwindow*) handle;