Add native icon themes to mac and other unix likes +many other fixes

CMakeLists.txt

@@ -2,17 +2,26 @@ cmake_minimum_required(VERSION 3.1)
 set(CMAKE_CXX_STANDARD 17)
 project(ImFileDialogExample)
 
+if(APPLE)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DIFD_USE_OPENGL -g -ggdb -ObjC++")
+else() 
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DIFD_USE_OPENGL -g -ggdb")
+endif()
+set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+
 # source code
 set(SOURCES
-	example.cpp
-	ImFileDialog.cpp
+    example.cpp
+    ImFileDialog.cpp
 
-	libs/imgui/imgui.cpp
-	libs/imgui/imgui_widgets.cpp
-	libs/imgui/imgui_draw.cpp
-	libs/imgui/imgui_tables.cpp
-	libs/imgui/backends/imgui_impl_opengl3.cpp
-	libs/imgui/backends/imgui_impl_sdl.cpp
+    libs/imgui/imgui.cpp
+    libs/imgui/imgui_widgets.cpp
+    libs/imgui/imgui_draw.cpp
+    libs/imgui/imgui_tables.cpp
+    libs/imgui/backends/imgui_impl_opengl3.cpp
+    libs/imgui/backends/imgui_impl_sdl2.cpp
+    libs/apifilesystem/filesystem.cpp
+
 )
 
 # cmake toolchain
@@ -26,10 +35,8 @@ if (UNIX)
 endif()
 
 # sdl2
-if(WIN32 OR APPLE OR NOT ${USE_PKG_CHECK_SDL})
+if(WIN32 OR APPLE)
   find_package(SDL2 REQUIRED)
-else()
-  pkg_check_modules(SDL2 REQUIRED sdl2)
 endif()
 
 # opengl
@@ -38,6 +45,7 @@ set_property(CACHE OpenGL_GL_PREFERENCE PROPERTY STRINGS GLVND LEGACY)
 find_package(OpenGL REQUIRED)
 
 # glew
+list(APPEND CMAKE_PREFIX_PATH "C:/vcpkg/packages/glew_x64-windows")
 find_package(GLEW REQUIRED)
 
 # create executable
@@ -58,11 +66,22 @@ target_link_libraries(ImFileDialogExample ${OPENGL_LIBRARIES})
 
 if(WIN32)
 	# link specific win32 libraries
-	target_link_libraries(ImFileDialogExample GLEW::GLEW SDL2::SDL2 SDL2::SDL2main)
+	target_link_libraries(ImFileDialogExample GLEW::GLEW SDL2::SDL2 SDL2::SDL2main shell32)
 
 elseif(UNIX AND NOT APPLE)
-	# link linux libraries
-	target_link_libraries(ImFileDialogExample ${GLEW_LIBRARIES} ${SDL2_LIBRARIES} ${CMAKE_DL_LIBS} stdc++fs pthread)
+	# link non-apple unix libraries
+	add_subdirectory(libs/lunasvg)
+	include_directories(libs/lunasvg/include /usr/include/SDL2 /usr/local/include/SDL2)
+	find_package(PkgConfig REQUIRED)
+	pkg_search_module(PKG_SDL2 REQUIRED IMPORTED_TARGET sdl2)
+	pkg_search_module(PKG_GTK3 REQUIRED IMPORTED_TARGET gtk+-3.0)
+	pkg_search_module(PKG_GIO2 REQUIRED IMPORTED_TARGET gio-2.0)
+	pkg_search_module(PKG_GLIB2 REQUIRED IMPORTED_TARGET glib-2.0)
+	if(CMAKE_SYSTEM_NAME STREQUAL "OpenBSD")
+		target_link_libraries(ImFileDialogExample lunasvg PkgConfig::PKG_SDL2 PkgConfig::PKG_GTK3 PkgConfig::PKG_GIO2 PkgConfig::PKG_GLIB2 ${GLEW_LIBRARIES} ${CMAKE_DL_LIBS} kvm pthread)
+	else()
+		target_link_libraries(ImFileDialogExample lunasvg PkgConfig::PKG_SDL2 PkgConfig::PKG_GTK3 PkgConfig::PKG_GIO2 PkgConfig::PKG_GLIB2 ${GLEW_LIBRARIES} ${CMAKE_DL_LIBS} pthread)
+	endif()
 elseif(APPLE)
-	target_link_libraries(ImFileDialogExample GLEW::GLEW ${SDL2_LIBRARIES} ${CMAKE_DL_LIBS})
+	target_link_libraries(ImFileDialogExample "-framework CoreFoundation -framework AppKit" GLEW::GLEW ${SDL2_LIBRARIES} ${CMAKE_DL_LIBS})
 endif()