Add native window retrieval on Linux.

Functionality had to be moved to a separate source file due to namespace
pollution from X11 headers.

Note that this doesn't set proper parent of file dialogs on Linux, as
GTK is broken and requires passing a GtkWindow parent.

profiler/build/win32/Tracy.vcxproj

@@ -160,6 +160,7 @@
     <ClCompile Include="..\..\src\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\..\src\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\..\src\main.cpp" />
+    <ClCompile Include="..\..\src\NativeWindow.cpp" />
     <ClCompile Include="..\..\src\ResolvService.cpp" />
     <ClCompile Include="..\..\src\winmain.cpp">
       <EnableEnhancedInstructionSet Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">NotSet</EnableEnhancedInstructionSet>

profiler/build/win32/Tracy.vcxproj.filters

@@ -42,6 +42,9 @@
     <ClCompile Include="..\..\src\main.cpp">
       <Filter>src</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\NativeWindow.cpp">
+      <Filter>src</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\libs\gl3w\GL\gl3w.c">
       <Filter>gl3w</Filter>
     </ClCompile>

profiler/src/NativeWindow.cpp

@@ -0,0 +1,24 @@
+#include "NativeWindow.hpp"
+
+#include <GLFW/glfw3.h>
+
+#ifdef _WIN32
+#  define GLFW_EXPOSE_NATIVE_WIN32
+#  include <GLFW/glfw3native.h>
+#elif defined __linux__
+#  define GLFW_EXPOSE_NATIVE_X11
+#  include <GLFW/glfw3native.h>
+#endif
+
+extern GLFWwindow* s_glfwWindow;
+
+void* GetMainWindowNative()
+{
+#ifdef _WIN32
+    return (void*)glfwGetWin32Window( s_glfwWindow );
+#elif defined __linux__
+    return (void*)glfwGetX11Window( s_glfwWindow );
+#else
+    return nullptr;
+#endif
+}

profiler/src/NativeWindow.hpp

@@ -0,0 +1,6 @@
+#ifndef __NATIVEWINDOW_HPP__
+#define __NATIVEWINDOW_HPP__
+
+void* GetMainWindowNative();
+
+#endif

profiler/src/main.cpp

@@ -22,8 +22,6 @@
 #ifdef _WIN32
 #  include <windows.h>
 #  include <shellapi.h>
-#  define GLFW_EXPOSE_NATIVE_WIN32
-#  include <GLFW/glfw3native.h>
 #endif
 
 #define STB_IMAGE_IMPLEMENTATION
@@ -50,6 +48,7 @@
 #include "FontAwesomeSolid.hpp"
 #include "icon.hpp"
 #include "ResolvService.hpp"
+#include "NativeWindow.hpp"
 
 static void glfw_error_callback(int error, const char* description)
 {
@@ -71,7 +70,7 @@ static void OpenWebpage( const char* url )
 #endif
 }
 
-static GLFWwindow* s_glfwWindow = nullptr;
+GLFWwindow* s_glfwWindow = nullptr;
 static bool s_customTitle = false;
 static void SetWindowTitleCallback( const char* title )
 {
@@ -88,15 +87,6 @@ static void WindowRefreshCallback( GLFWwindow* window )
     DrawContents();
 }
 
-void* GetMainWindowNative()
-{
-#ifdef _WIN32
-    return (void*)glfwGetWin32Window( s_glfwWindow );
-#else
-    return nullptr;
-#endif
-}
-
 std::vector<std::unordered_map<std::string, uint64_t>::const_iterator> RebuildConnectionHistory( const std::unordered_map<std::string, uint64_t>& connHistMap )
 {
     std::vector<std::unordered_map<std::string, uint64_t>::const_iterator> ret;