feat: Added cross-platform .NET scripts support (#1185)

This PR intends to add support for .NET scripts that can extend ImHex's
functionality in a portable and cross-platform way.

---------

Co-authored-by: Justus Garbe <55301990+Nowilltolife@users.noreply.github.com>

plugins/script_loader/source/script_api/v1/ui.cpp

@@ -0,0 +1,139 @@
+#include <script_api.hpp>
+
+#include <hex/api/imhex_api.hpp>
+#include <hex/api/event.hpp>
+#include <hex/api/localization.hpp>
+
+#include <hex/ui/popup.hpp>
+
+using namespace hex;
+
+#define VERSION V1
+
+static std::optional<std::string> s_inputTextBoxResult;
+static std::optional<bool> s_yesNoQuestionBoxResult;
+
+class PopupYesNo : public Popup<PopupYesNo> {
+public:
+    PopupYesNo(std::string title, std::string message)
+            : hex::Popup<PopupYesNo>(std::move(title), false),
+              m_message(std::move(message)) { }
+
+    void drawContent() override {
+        ImGui::TextFormattedWrapped("{}", this->m_message.c_str());
+        ImGui::NewLine();
+        ImGui::Separator();
+
+        auto width = ImGui::GetWindowWidth();
+        ImGui::SetCursorPosX(width / 9);
+        if (ImGui::Button("hex.builtin.common.yes"_lang, ImVec2(width / 3, 0))) {
+            s_yesNoQuestionBoxResult = true;
+            this->close();
+        }
+        ImGui::SameLine();
+        ImGui::SetCursorPosX(width / 9 * 5);
+        if (ImGui::Button("hex.builtin.common.no"_lang, ImVec2(width / 3, 0))) {
+            s_yesNoQuestionBoxResult = false;
+            this->close();
+        }
+
+        ImGui::SetWindowPos((ImHexApi::System::getMainWindowSize() - ImGui::GetWindowSize()) / 2, ImGuiCond_Appearing);
+    }
+
+    [[nodiscard]] ImGuiWindowFlags getFlags() const override {
+        return ImGuiWindowFlags_AlwaysAutoResize;
+    }
+
+    [[nodiscard]] ImVec2 getMinSize() const override {
+        return scaled({ 400, 100 });
+    }
+
+    [[nodiscard]] ImVec2 getMaxSize() const override {
+        return scaled({ 600, 300 });
+    }
+
+private:
+    std::string m_message;
+};
+
+class PopupInputText : public Popup<PopupInputText> {
+public:
+    PopupInputText(std::string title, std::string message, size_t maxSize)
+            : hex::Popup<PopupInputText>(std::move(title), false),
+              m_message(std::move(message)), m_maxSize(maxSize) { }
+
+    void drawContent() override {
+        ImGui::TextFormattedWrapped("{}", this->m_message.c_str());
+        ImGui::NewLine();
+
+        ImGui::SetItemDefaultFocus();
+        ImGui::SetNextItemWidth(-1);
+        bool submitted = ImGui::InputText("##input", this->m_input, ImGuiInputTextFlags_EnterReturnsTrue);
+        if (this->m_input.size() > this->m_maxSize)
+            this->m_input.resize(this->m_maxSize);
+
+        ImGui::NewLine();
+        ImGui::Separator();
+
+        auto width = ImGui::GetWindowWidth();
+        ImGui::SetCursorPosX(width / 9);
+        ImGui::BeginDisabled(this->m_input.empty());
+        if (ImGui::Button("hex.builtin.common.okay"_lang, ImVec2(width / 3, 0)) || submitted) {
+            s_inputTextBoxResult = this->m_input;
+            this->close();
+        }
+        ImGui::EndDisabled();
+        ImGui::SameLine();
+        ImGui::SetCursorPosX(width / 9 * 5);
+        if (ImGui::Button("hex.builtin.common.cancel"_lang, ImVec2(width / 3, 0))) {
+            s_inputTextBoxResult = "";
+            this->close();
+        }
+
+        ImGui::SetWindowPos((ImHexApi::System::getMainWindowSize() - ImGui::GetWindowSize()) / 2, ImGuiCond_Appearing);
+    }
+
+    [[nodiscard]] ImGuiWindowFlags getFlags() const override {
+        return ImGuiWindowFlags_AlwaysAutoResize;
+    }
+
+    [[nodiscard]] ImVec2 getMinSize() const override {
+        return scaled({ 400, 100 });
+    }
+
+    [[nodiscard]] ImVec2 getMaxSize() const override {
+        return scaled({ 600, 300 });
+    }
+
+private:
+    std::string m_message;
+    std::string m_input;
+    size_t m_maxSize;
+};
+
+SCRIPT_API(void showMessageBox, const char *message) {
+    hex::EventManager::post<hex::RequestOpenInfoPopup>(message);
+}
+
+SCRIPT_API(void showInputTextBox, const char *title, const char *message, char *buffer, u32 bufferSize) {
+    PopupInputText::open(std::string(title), std::string(message), bufferSize - 1);
+
+    while (!s_inputTextBoxResult.has_value()) {
+        std::this_thread::sleep_for(std::chrono::milliseconds(100));
+    }
+
+    auto &value = s_inputTextBoxResult.value();
+    std::memcpy(buffer, value.c_str(), std::min<size_t>(value.size() + 1, bufferSize));
+    s_inputTextBoxResult.reset();
+}
+
+SCRIPT_API(void showYesNoQuestionBox, const char *title, const char *message, bool *result) {
+    PopupYesNo::open(std::string(title), std::string(message));
+
+    while (!s_yesNoQuestionBoxResult.has_value()) {
+        std::this_thread::sleep_for(std::chrono::milliseconds(100));
+    }
+
+    *result = s_yesNoQuestionBoxResult.value();
+    s_yesNoQuestionBoxResult.reset();
+}