Remove Unused Project Includes and Forward-Declare Where a Type Is Only Referenced

Generated with include-what-you-use and applied conservatively. Only OrcaSlicer's own headers, the ones under src/ and tests/, are removed or forward-declared; standard-library and third-party includes are left alone. An include is removed only when both the Release and the Debug configuration leave it unused, never from inside a conditional block, and never from a file with platform-specific blocks, which only gain includes. Files whose only use of a header sits behind a feature or debug macro (libvgcode's OpenGL ES and marker code, the ARACHNE/TESTS_EXPORT_SVGS debug output) keep their includes.

clonable_ptr.hpp gains #pragma once; it had no include guard and was only safe while Config.hpp was its sole includer.

tests/slic3rutils/test_dev_mapping.cpp

@@ -28,6 +28,8 @@
 #include "slic3r/GUI/DeviceCore/DevFilaSystem.h"
 
 #include <nlohmann/json.hpp>
+#include "slic3r/GUI/DeviceCore/DevFilaSwitch.h"
+#include "slic3r/GUI/DeviceCore/DevUtil.h"
 
 using json = nlohmann::json;
 using namespace Slic3r;

tests/slic3rutils/test_plugin_capability_config.cpp

@@ -1,7 +1,6 @@
 #include <catch2/catch_all.hpp>
 
 #include <exception>
-#include <libslic3r/Utils.hpp>
 #include <slic3r/plugin/PluginConfig.hpp>
 #include <slic3r/plugin/PluginManager.hpp>
 #include <slic3r/plugin/PythonInterpreter.hpp>
@@ -20,6 +19,7 @@
 
 #include <memory>
 #include <string>
+#include <pybind11/cast.h>
 
 namespace py = pybind11;
 using namespace Slic3r;

tests/slic3rutils/test_plugin_cloud_metadata.cpp

@@ -3,7 +3,6 @@
 #include <catch2/catch_all.hpp>
 
 #include <ios>
-#include <libslic3r/Utils.hpp>
 #include <slic3r/plugin/PluginConfig.hpp>
 #include <slic3r/plugin/PluginDescriptor.hpp>
 #include <slic3r/plugin/PluginFsUtils.hpp>

tests/slic3rutils/test_plugin_config.cpp

@@ -3,9 +3,7 @@
 #include <catch2/catch_all.hpp>
 
 #include <ios>
-#include <libslic3r/Utils.hpp>
 #include <slic3r/plugin/PluginConfig.hpp>
-#include <slic3r/plugin/PluginManager.hpp>
 
 #include <catch2/catch_test_macros.hpp>
 #include "plugin_test_utils.hpp"

tests/slic3rutils/test_plugin_host_api.cpp

@@ -7,7 +7,6 @@
 #include <slic3r/GUI/DockPanel.hpp>
 #include <slic3r/GUI/AuiPaneLayout.hpp>
 #include <slic3r/GUI/Widgets/WebHosting.hpp>
-#include <slic3r/plugin/PythonPluginBridge.hpp>
 
 #include <catch2/catch_test_macros.hpp>
 #include <catch2/catch_message.hpp>
@@ -25,6 +24,11 @@
 
 #include <wx/string.h>
 #include <wx/uri.h>
+#include "libslic3r/ObjectID.hpp"
+#include "libslic3r/Point.hpp"
+#include "libslic3r/Preset.hpp"
+#include "libslic3r/PrintConfig.hpp"
+#include <pybind11/detail/common.h>
 
 namespace py = pybind11;
 

tests/slic3rutils/test_plugin_install.cpp

@@ -3,7 +3,6 @@
 #include <catch2/catch_all.hpp>
 
 #include <ios>
-#include <libslic3r/Utils.hpp>
 #include <slic3r/plugin/PluginLoader.hpp>
 #include <slic3r/plugin/PluginDescriptor.hpp>
 #include <slic3r/plugin/PluginFsUtils.hpp>

tests/slic3rutils/test_plugin_lifecycle.cpp

@@ -4,7 +4,6 @@
 
 #include <ios>
 #include <libslic3r/LifecycleEvents.hpp>
-#include <libslic3r/Utils.hpp>
 #include <memory>
 #include <slic3r/Utils/NetworkAgentFactory.hpp>
 #include <slic3r/plugin/PluginDescriptor.hpp>

tests/slic3rutils/test_plugin_printer_agent.cpp

@@ -18,6 +18,7 @@
 #include <pybind11/pytypes.h>
 #include <pybind11/eval.h>
 #include <pybind11/gil.h>
+#include <pybind11/cast.h>
 
 namespace py = pybind11;
 using namespace Slic3r;

tests/slic3rutils/test_precise_seam_plugin.cpp

@@ -10,6 +10,8 @@
 
 #include <pybind11/embed.h>
 #include <array>
+#include <pybind11/detail/common.h>
+#include <pybind11/pybind11.h>
 
 namespace py = pybind11;
 using namespace Slic3r;

tests/slic3rutils/test_printer_agent.cpp

@@ -1,10 +1,7 @@
 #include <catch2/catch_all.hpp>
 
 #include <memory>
-#include "slic3r/Utils/ICloudServiceAgent.hpp"
-#include "slic3r/Utils/IPrinterAgent.hpp"
 #include <slic3r/Utils/NetworkAgentFactory.hpp>
-#include <slic3r/plugin/PythonPluginBridge.hpp>
 
 #include <catch2/catch_test_macros.hpp>
 #include <pybind11/pytypes.h>
@@ -15,6 +12,10 @@
 #include <pybind11/pybind11.h>
 
 #include <string>
+#include <pybind11/cast.h>
+
+namespace Slic3r { class ICloudServiceAgent; }
+namespace Slic3r { class IPrinterAgent; }
 
 using namespace Slic3r;
 namespace py = pybind11;

tests/slic3rutils/test_printhost.cpp

@@ -18,6 +18,7 @@
 #include "libslic3r/LifecycleEvents.hpp"
 #include "slic3r/Utils/PrintHost.hpp"
 #include "slic3r/Utils/Flashforge.hpp"
+#include "slic3r/Utils/Http.hpp"
 
 using namespace Slic3r;
 

tests/slic3rutils/test_scene_benchmark.cpp

@@ -9,6 +9,9 @@
 #include <numeric>
 #include <random>
 #include <vector>
+#include <catch2/catch_test_macros.hpp>
+#include <catch2/matchers/catch_matchers.hpp>
+#include <catch2/matchers/catch_matchers_floating_point.hpp>
 
 using Catch::Matchers::WithinAbs;
 using Slic3r::GUI::frame_time_stats;

tests/slic3rutils/test_slicing_pipeline_bindings.cpp

@@ -147,6 +147,10 @@ TEST_CASE("orca.slicing is workflow-only: context exposes raw print/object; view
 #include <boost/filesystem.hpp>
 #include <boost/nowide/fstream.hpp>
 #include <sstream>
+#include "libslic3r/BoundingBox.hpp"
+#include "libslic3r/Polyline.hpp"
+#include <pybind11/detail/common.h>
+#include <pybind11/detail/descr.h>
 
 // psGCodePostProcess is the merged post-processing seam: no live Print (print/object are None), the
 // plugin edits the file at ctx.gcode_path in place, and ctx.config_value() falls back to the config

tests/slic3rutils/test_slicing_pipeline_config.cpp

@@ -8,7 +8,6 @@
 #include "libslic3r/Model.hpp"
 #include "libslic3r/PrintConfig.hpp"
 #include "libslic3r/Config.hpp"
-#include <libslic3r/Utils.hpp>
 #include <slic3r/plugin/PluginConfig.hpp>
 #include "slic3r/plugin/PluginFsUtils.hpp"
 #include <slic3r/plugin/PluginManager.hpp>

tests/slic3rutils/test_web_media_controller.cpp

@@ -15,6 +15,11 @@
 #include <string>
 #include <vector>
 
+class wxColour;
+class wxPoint;
+class wxSize;
+class wxWindow;
+
 using namespace Slic3r;
 using namespace Slic3r::GUI;