Merge pull request #2 from libnativeapi/copilot/fix-769eebe8-4376-465b-ba57-982433f00bba

[Linux] Implement WindowManager class with GTK backend

Author: lijy91

examples/nswindow_example/CMakeLists.txt

@@ -6,8 +6,10 @@ project(nswindow_example VERSION 0.0.1 LANGUAGES CXX)
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
-# Enable Objective-C++
-enable_language(OBJCXX)
+# Enable Objective-C++ (macOS only)
+if(APPLE)
+    enable_language(OBJCXX)
+endif()
 
 # Add example program
 add_executable(nswindow_example

src/CMakeLists.txt

@@ -19,7 +19,7 @@ file(GLOB COMMON_SOURCES "*.cpp")
 list(FILTER COMMON_SOURCES EXCLUDE REGEX "platform/*")
 
 # Platform-specific source files
-if(LINUX)
+if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
     file(GLOB PLATFORM_SOURCES "platform/linux/*_linux.cpp")
     # Find GTK package for Linux
     find_package(PkgConfig REQUIRED)
@@ -49,14 +49,14 @@ target_include_directories(libnativeapi PUBLIC
   $<INSTALL_INTERFACE:include>
 )
 
-if (LINUX)
+if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
     target_include_directories(libnativeapi PUBLIC ${GTK_INCLUDE_DIRS})
 endif ()
 
 # Link required frameworks and libraries
 if(APPLE)
     target_link_libraries(libnativeapi PUBLIC "-framework Cocoa")
     target_compile_options(libnativeapi PRIVATE "-x" "objective-c++")
-elseif (LINUX)
+elseif (CMAKE_SYSTEM_NAME STREQUAL "Linux")
     target_link_libraries(libnativeapi PUBLIC PkgConfig::GTK)
 endif ()

src/platform/linux/display_manager_linux.cpp

@@ -14,16 +14,18 @@ static Display CreateDisplayFromGdkMonitor(GdkMonitor* monitor,
   GdkRectangle frame;
   gdk_monitor_get_geometry(monitor, &frame);
 
-  display.width = frame.width;
-  display.height = frame.height;
+  display.size.width = frame.width;
+  display.size.height = frame.height;
+  display.position.x = frame.x;
+  display.position.y = frame.y;
 
   GdkRectangle workarea_rect;
   gdk_monitor_get_workarea(monitor, &workarea_rect);
 
-  display.visibleSizeWidth = workarea_rect.width;
-  display.visibleSizeHeight = workarea_rect.height;
-  display.visiblePositionX = workarea_rect.x;
-  display.visiblePositionY = workarea_rect.y;
+  display.workArea.width = workarea_rect.width;
+  display.workArea.height = workarea_rect.height;
+  display.workArea.x = workarea_rect.x;
+  display.workArea.y = workarea_rect.y;
 
   display.scaleFactor = gdk_monitor_get_scale_factor(monitor);