impr: Make long running tasks not freeze ImHex, fix saving non-continuous providers

Fixes #1454

plugins/builtin/include/content/popups/popup_blocking_task.hpp

@@ -0,0 +1,41 @@
+#pragma once
+
+#include <hex/ui/popup.hpp>
+
+#include <hex/api/localization_manager.hpp>
+
+#include <string>
+
+namespace hex::plugin::builtin {
+
+    class PopupBlockingTask : public Popup<PopupBlockingTask> {
+    public:
+        PopupBlockingTask(TaskHolder &&task) : hex::Popup<PopupBlockingTask>("hex.builtin.popup.blocking_task.title", false), m_task(std::move(task)) { }
+
+        void drawContent() override {
+            ImGui::TextUnformatted("hex.builtin.popup.blocking_task.desc"_lang);
+            ImGui::Separator();
+
+            if (this->m_task.getProgress() == 0)
+                ImGuiExt::TextSpinner("");
+            else
+                ImGui::ProgressBar(this->m_task.getProgress() / 100.0F);
+
+            ImGui::NewLine();
+            if (ImGui::ButtonEx("hex.builtin.common.cancel"_lang, ImVec2(ImGui::GetContentRegionAvail().x, 0)) || ImGui::IsKeyDown(ImGuiKey_Escape))
+                this->m_task.interrupt();
+
+            if (!this->m_task.isRunning()) {
+                ImGui::CloseCurrentPopup();
+            }
+        }
+
+        [[nodiscard]] ImGuiWindowFlags getFlags() const override {
+            return ImGuiWindowFlags_NoResize | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoMove;
+        }
+
+    private:
+        TaskHolder m_task;
+    };
+
+}

plugins/builtin/romfs/lang/en_US.json

@@ -490,6 +490,8 @@
         "hex.builtin.popup.exit_application.desc": "You have unsaved changes made to your Project.\nAre you sure you want to exit?",
         "hex.builtin.popup.exit_application.title": "Exit Application?",
         "hex.builtin.popup.waiting_for_tasks.title": "Waiting for Tasks",
+        "hex.builtin.popup.blocking_task.title": "Running Task",
+        "hex.builtin.popup.blocking_task.desc": "A task is currently executing.",
         "hex.builtin.popup.save_layout.title": "Save Layout",
         "hex.builtin.popup.save_layout.desc": "Enter a name under which to save the current layout.",
         "hex.builtin.popup.waiting_for_tasks.desc": "There are still tasks running in the background.\nImHex will close after they are finished.",

plugins/builtin/source/content/views/view_hex_editor.cpp

@@ -16,6 +16,7 @@
 #include <content/popups/popup_file_chooser.hpp>
 
 #include <imgui_internal.h>
+#include <content/popups/popup_blocking_task.hpp>
 
 using namespace std::literals::string_literals;
 
@@ -692,7 +693,10 @@ namespace hex::plugin::builtin {
 
     static void saveAs() {
         fs::openFileBrowser(fs::DialogMode::Save, {}, [](const auto &path) {
-            ImHexApi::Provider::get()->saveAs(path);
+            auto provider = ImHexApi::Provider::get();
+            PopupBlockingTask::open(TaskManager::createTask("Saving...", TaskManager::NoProgress, [=](Task &){
+                provider->saveAs(path);
+            }));
         });
     }
 

plugins/builtin/source/ui/hex_editor.cpp

@@ -759,8 +759,8 @@ namespace hex::plugin::builtin::ui {
                         ImGuiExt::TextFormatted("{}:", "hex.builtin.hex_editor.data_size"_lang);
                         ImGui::SameLine();
                         ImGuiExt::TextFormattedSelectable("0x{0:08X} (0x{1:X} | {2})",
-                                                       this->m_provider->getActualSize(),
-                                                       this->m_provider->getActualSize(),
+                                                       this->m_provider->getBaseAddress(),
+                                                       this->m_provider->getBaseAddress() + this->m_provider->getActualSize(),
                                                        this->m_showHumanReadableUnits
                                                            ? hex::toByteString(this->m_provider->getActualSize())
                                                            : hex::format("{}", this->m_provider->getActualSize())