Add imgui rendering ability on none glfw windows

openVulkanoCpp/Host/ImGuiImplOpenVulkano.cpp

@@ -0,0 +1,69 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#include "ImGuiImplOpenVulkano.hpp"
+#include "Base/FrameMetadata.hpp"
+#include <imgui.h>
+
+namespace openVulkanoCpp
+{
+	ImGuiImplOpenVulkano ImGuiImplOpenVulkano::INSTANCE{};
+
+	void ImGuiImplOpenVulkano::Init(openVulkanoCpp::IWindow* window)
+	{
+		ImGuiIO& io = ImGui::GetIO();
+		IM_ASSERT(io.BackendPlatformUserData == nullptr && "Already initialized a platform backend!");
+
+		m_window = window;
+
+		io.BackendPlatformUserData = this;
+		io.BackendPlatformName = "imgui_impl_ios";
+
+		/*io.SetClipboardTextFn = ImGui_ImplGlfw_SetClipboardText;
+		io.GetClipboardTextFn = ImGui_ImplGlfw_GetClipboardText;
+		io.ClipboardUserData = bd->Window;*/
+
+
+		ImGuiViewport* mainViewport = ImGui::GetMainViewport();
+		mainViewport->PlatformHandle = m_window;
+	}
+
+	void ImGuiImplOpenVulkano::NewFrame()
+	{
+		ImGuiIO& io = ImGui::GetIO();
+		IM_ASSERT(m_window != nullptr && "Did you call Init?");
+
+		// Setup display size (every frame to accommodate for window resizing)
+		/*int w, h;
+		int display_w, display_h;
+		glfwGetWindowSize(bd->Window, &w, &h);
+		glfwGetFramebufferSize(bd->Window, &display_w, &display_h);
+		io.DisplaySize = ImVec2((float)w, (float)h);
+		if (w > 0 && h > 0)
+			io.DisplayFramebufferScale = ImVec2((float)display_w / (float)w, (float)display_h / (float)h);*/
+		io.DisplaySize = { static_cast<float>(m_window->GetWidth()), static_cast<float>(m_window->GetHeight()) };
+		io.DisplayFramebufferScale = { 1, 1 };
+
+		//if (bd->WantUpdateMonitors)
+			//ImGui_ImplGlfw_UpdateMonitors();
+
+		// Setup time step
+		io.DeltaTime = CURRENT_FRAME.frameTime;
+
+		//TODO handle inputs
+	}
+
+	void ImGuiImplOpenVulkano::Close()
+	{
+		ImGuiIO& io = ImGui::GetIO();
+
+		ImGui::DestroyPlatformWindows();
+
+		io.BackendPlatformName = nullptr;
+		io.BackendPlatformUserData = nullptr;
+		io.BackendFlags = ImGuiBackendFlags_None;
+	}
+}