Call jngl::Job::onFileDrop when using Drag'n'Drop, SDL2 backend only …

…for now

src/jngl/job.cpp

@@ -9,6 +9,9 @@ namespace jngl {
 
 Job::~Job() = default;
 
+void Job::onFileDrop(const std::filesystem::path&) {
+}
+
 void addJob(std::shared_ptr<Job> job) {
 	pWindow->addJob(std::move(job));
 }

src/jngl/job.hpp

@@ -4,6 +4,7 @@
 /// @file
 #pragma once
 
+#include <filesystem>
 #include <functional>
 #include <memory>
 
@@ -34,6 +35,9 @@ class Job {
 	/// \note JNGL's main loop calls all Jobs' draw() functions after the active Work's draw()
 	virtual void draw() const = 0;
 
+	/// Called when a file has been dropped onto the window
+	virtual void onFileDrop(const std::filesystem::path&);
+
 	/// Does nothing
 	Job() = default;
 

src/sdl/window.cpp

@@ -415,6 +415,20 @@ void Window::UpdateInput() {
 				width_ = originalWidth;
 				height_ = originalHeight;
 			}
+			break;
+		case SDL_DROPFILE:
+			if (event.drop.file) {
+				std::filesystem::path path(event.drop.file);
+				SDL_free(event.drop.file);
+				assert(std::filesystem::exists(path));
+				for (const auto& job : jobs) {
+					job->onFileDrop(path);
+				}
+				if (currentWork_) {
+					currentWork_->onFileDrop(path);
+				}
+			}
+			break;
 		}
 	}
 }

src/test/test.cpp

@@ -242,6 +242,10 @@ class Test : public jngl::Work {
 		}
 	}
 private:
+	void onFileDrop(const std::filesystem::path& file) override {
+		jngl::errorMessage(file.string() + " dropped on window.");
+	}
+
 	mutable bool drawOnFrameBuffer = false;
 	bool useShader = false;
 	mutable double rotate = 0;