From 3facc4569f34a4a82245483b6791d12d4cecfdd5 Mon Sep 17 00:00:00 2001
From: alemuntoni <alemuntoni@users.noreply.github.com>
Date: Wed, 22 Jan 2025 18:41:07 +0100
Subject: [PATCH] [render] fix imgui_drawer build error if glfw or qt are not
 found

---
 .../render/include/vclib/imgui/imgui_drawer.h | 28 +++++++++++++------
 1 file changed, 20 insertions(+), 8 deletions(-)

diff --git a/vclib/render/include/vclib/imgui/imgui_drawer.h b/vclib/render/include/vclib/imgui/imgui_drawer.h
index eb52647af..89ae4534e 100644
--- a/vclib/render/include/vclib/imgui/imgui_drawer.h
+++ b/vclib/render/include/vclib/imgui/imgui_drawer.h
@@ -67,14 +67,18 @@ class ImGuiDrawer : public BlockerEventDrawer<DerivedRenderApp>
         ImGui_ImplOpenGL2_Shutdown();
 #elif defined(VCLIB_RENDER_BACKEND_BGFX)
         ImGui_ImplBgfx_Shutdown();
-#endif
+#endif  // VCLIB_RENDER_BACKEND_*
+#ifdef VCLIB_WITH_GLFW
         if constexpr (DRA::WINDOW_MANAGER_ID == WindowManagerId::GLFW_WINDOW) {
             ImGui_ImplGlfw_Shutdown();
         }
-        else if constexpr (
+#endif // VCLIB_WITH_GLFW
+#ifdef VCLIB_WITH_QT
+        if constexpr (
             DRA::WINDOW_MANAGER_ID == WindowManagerId::QT_WIDGET) {
             ImGui_ImplQt_Shutdown();
         }
+#endif // VCLIB_WITH
         ImGui::DestroyContext();
     }
 
@@ -91,6 +95,7 @@ class ImGuiDrawer : public BlockerEventDrawer<DerivedRenderApp>
         // setup ImGui style
         ImGui::StyleColorsDark();
 
+#ifdef VCLIB_WITH_GLFW
         if constexpr (DRA::WINDOW_MANAGER_ID == WindowManagerId::GLFW_WINDOW) {
             GLFWwindow* mWindow =
                 reinterpret_cast<GLFWwindow*>(DRA::DRW::windowPtr(derived()));
@@ -101,9 +106,11 @@ class ImGuiDrawer : public BlockerEventDrawer<DerivedRenderApp>
 #elif defined(VCLIB_RENDER_BACKEND_BGFX)
             ImGui_ImplGlfw_InitForOther(mWindow, true);
             ImGui_ImplBgfx_Init();
-#endif
+#endif // VCLIB_RENDER_BACKEND_*
         }
-        else if constexpr (
+# endif // VCLIB_WITH_GLFW
+#ifdef VCLIB_WITH_QT
+        if constexpr (
             DRA::WINDOW_MANAGER_ID == WindowManagerId::QT_WIDGET) {
             QWidget* mWindow =
                 reinterpret_cast<QWidget*>(DRA::DRW::windowPtr(derived()));
@@ -113,8 +120,9 @@ class ImGuiDrawer : public BlockerEventDrawer<DerivedRenderApp>
             ImGui_ImplOpenGL2_Init();
 #elif defined(VCLIB_RENDER_BACKEND_BGFX)
             ImGui_ImplBgfx_Init();
-#endif
+#endif // VCLIB_RENDER_BACKEND_*
         }
+#endif // VCLIB_WITH_QT
     }
 
     virtual void onDraw(uint)
@@ -124,14 +132,18 @@ class ImGuiDrawer : public BlockerEventDrawer<DerivedRenderApp>
         ImGui_ImplOpenGL2_NewFrame();
 #elif defined(VCLIB_RENDER_BACKEND_BGFX)
         ImGui_ImplBgfx_NewFrame();
-#endif
+#endif // VCLIB_RENDER_BACKEND_*
+#ifdef VCLIB_WITH_GLFW
         if constexpr (DRA::WINDOW_MANAGER_ID == WindowManagerId::GLFW_WINDOW) {
             ImGui_ImplGlfw_NewFrame();
         }
-        else if constexpr (
+#endif // VCLIB_WITH_GLFW
+#ifdef VCLIB_WITH_QT
+        if constexpr (
             DRA::WINDOW_MANAGER_ID == WindowManagerId::QT_WIDGET) {
             ImGui_ImplQt_NewFrame();
         }
+#endif // VCLIB_WITH_QT
         ImGui::NewFrame();
     }
 
@@ -143,7 +155,7 @@ class ImGuiDrawer : public BlockerEventDrawer<DerivedRenderApp>
         ImGui_ImplOpenGL2_RenderDrawData(ImGui::GetDrawData());
 #elif defined(VCLIB_RENDER_BACKEND_BGFX)
         ImGui_ImplBgfx_RenderDrawData(ImGui::GetDrawData());
-#endif
+#endif // VCLIB_RENDER_BACKEND_*
         derived()->update();
     }