software_keyboard: Make GetText asynchronous

a

src/core/frontend/applets/software_keyboard.cpp

@@ -9,12 +9,13 @@
 namespace Core::Frontend {
 SoftwareKeyboardApplet::~SoftwareKeyboardApplet() = default;
 
-std::optional<std::u16string> DefaultSoftwareKeyboardApplet::GetText(
+void DefaultSoftwareKeyboardApplet::RequestText(
+    std::function<void(std::optional<std::u16string>)> out,
     SoftwareKeyboardParameters parameters) const {
     if (parameters.initial_text.empty())
-        return u"yuzu";
+        out(u"yuzu");
 
-    return parameters.initial_text;
+    out(parameters.initial_text);
 }
 
 void DefaultSoftwareKeyboardApplet::SendTextCheckDialog(std::u16string error_message) const {

src/core/frontend/applets/software_keyboard.h

@@ -4,6 +4,7 @@
 
 #pragma once
 
+#include <functional>
 #include <optional>
 #include <string>
 #include "common/bit_field.h"
@@ -36,13 +37,15 @@ class SoftwareKeyboardApplet {
 public:
     virtual ~SoftwareKeyboardApplet();
 
-    virtual std::optional<std::u16string> GetText(SoftwareKeyboardParameters parameters) const = 0;
+    virtual void RequestText(std::function<void(std::optional<std::u16string>)> out,
+                             SoftwareKeyboardParameters parameters) const = 0;
     virtual void SendTextCheckDialog(std::u16string error_message) const = 0;
 };
 
 class DefaultSoftwareKeyboardApplet final : public SoftwareKeyboardApplet {
 public:
-    std::optional<std::u16string> GetText(SoftwareKeyboardParameters parameters) const override;
+    void RequestText(std::function<void(std::optional<std::u16string>)> out,
+                     SoftwareKeyboardParameters parameters) const override;
     void SendTextCheckDialog(std::u16string error_message) const override;
 };
 

src/core/hle/service/am/am.cpp

@@ -718,7 +718,7 @@ void IStorageAccessor::Write(Kernel::HLERequestContext& ctx) {
     const u64 offset{rp.Pop<u64>()};
     const std::vector<u8> data{ctx.ReadBuffer()};
 
-    const auto size = std::min(data.size(), backing.buffer.size() - offset);
+    const auto size = std::min<std::size_t>(data.size(), backing.buffer.size() - offset);
 
     std::memcpy(&backing.buffer[offset], data.data(), size);
 

src/core/hle/service/am/applets/software_keyboard.cpp

@@ -43,6 +43,10 @@ SoftwareKeyboard::SoftwareKeyboard() = default;
 SoftwareKeyboard::~SoftwareKeyboard() = default;
 
 void SoftwareKeyboard::Initialize(std::vector<std::shared_ptr<IStorage>> storage_) {
+    complete = false;
+    initial_text.clear();
+    final_data.clear();
+
     Applet::Initialize(std::move(storage_));
 
     ASSERT(storage_stack.size() >= 2);
@@ -96,20 +100,25 @@ void SoftwareKeyboard::Execute(AppletStorageProxyFunction out_data,
 
     const auto parameters = ConvertToFrontendParameters(config, initial_text);
 
-    const auto res = frontend.GetText(parameters);
+    this->out_data = out_data;
+    this->out_interactive_data = out_interactive_data;
+    frontend.RequestText([this](std::optional<std::u16string> text) { WriteText(text); },
+                         parameters);
+}
 
+void SoftwareKeyboard::WriteText(std::optional<std::u16string> text) {
     std::vector<u8> output(SWKBD_OUTPUT_BUFFER_SIZE);
 
-    if (res.has_value()) {
+    if (text.has_value()) {
         if (config.text_check) {
-            const auto size = static_cast<u32>(res->size() * 2 + 4);
+            const auto size = static_cast<u32>(text->size() * 2 + 4);
             std::memcpy(output.data(), &size, sizeof(u32));
         } else {
             output[0] = 1;
         }
 
-        std::memcpy(output.data() + 4, res->data(),
-                    std::min(res->size() * 2, SWKBD_OUTPUT_BUFFER_SIZE - 4));
+        std::memcpy(output.data() + 4, text->data(),
+                    std::min(text->size() * 2, SWKBD_OUTPUT_BUFFER_SIZE - 4));
     } else {
         complete = true;
         out_data(IStorage{output});

src/core/hle/service/am/applets/software_keyboard.h

@@ -57,11 +57,16 @@ public:
     void Execute(AppletStorageProxyFunction out_data,
                  AppletStorageProxyFunction out_interactive_data) override;
 
+    void WriteText(std::optional<std::u16string> text);
+
 private:
     KeyboardConfig config;
     std::u16string initial_text;
     bool complete = false;
     std::vector<u8> final_data;
+
+    AppletStorageProxyFunction out_data;
+    AppletStorageProxyFunction out_interactive_data;
 };
 
 } // namespace Service::AM::Applets

src/yuzu/applets/software_keyboard.cpp

@@ -105,20 +105,27 @@ bool QtSoftwareKeyboardDialog::GetStatus() const {
     return ok;
 }
 
-QtSoftwareKeyboard::QtSoftwareKeyboard(GMainWindow& parent) : main_window(parent) {}
+QtSoftwareKeyboard::QtSoftwareKeyboard(GMainWindow& main_window) {
+    connect(this, &QtSoftwareKeyboard::MainWindowGetText, &main_window,
+            &GMainWindow::SoftwareKeyboardGetText, Qt::QueuedConnection);
+    connect(this, &QtSoftwareKeyboard::MainWindowTextCheckDialog, &main_window,
+            &GMainWindow::SoftwareKeyboardInvokeCheckDialog, Qt::BlockingQueuedConnection);
+    connect(&main_window, &GMainWindow::SoftwareKeyboardFinishedText, this,
+            &QtSoftwareKeyboard::MainWindowFinishedText, Qt::QueuedConnection);
+}
 
 QtSoftwareKeyboard::~QtSoftwareKeyboard() = default;
 
-std::optional<std::u16string> QtSoftwareKeyboard::GetText(
+void QtSoftwareKeyboard::RequestText(std::function<void(std::optional<std::u16string>)> out,
                                      Core::Frontend::SoftwareKeyboardParameters parameters) const {
-    std::optional<std::u16string> success;
-    QMetaObject::invokeMethod(&main_window, "SoftwareKeyboardGetText", Qt::BlockingQueuedConnection,
-                              Q_RETURN_ARG(std::optional<std::u16string>, success),
-                              Q_ARG(Core::Frontend::SoftwareKeyboardParameters, parameters));
-    return success;
+    text_output = out;
+    emit MainWindowGetText(parameters);
 }
 
 void QtSoftwareKeyboard::SendTextCheckDialog(std::u16string error_message) const {
-    QMetaObject::invokeMethod(&main_window, "SoftwareKeyboardInvokeCheckDialog",
-                              Qt::BlockingQueuedConnection, Q_ARG(std::u16string, error_message));
+    emit MainWindowTextCheckDialog(error_message);
+}
+
+void QtSoftwareKeyboard::MainWindowFinishedText(std::optional<std::u16string> text) {
+    text_output(text);
 }

src/yuzu/applets/software_keyboard.h

@@ -54,14 +54,23 @@ private:
 };
 
 class QtSoftwareKeyboard final : public QObject, public Core::Frontend::SoftwareKeyboardApplet {
+    Q_OBJECT
+
 public:
     explicit QtSoftwareKeyboard(GMainWindow& parent);
     ~QtSoftwareKeyboard() override;
 
-    std::optional<std::u16string> GetText(
+    void RequestText(std::function<void(std::optional<std::u16string>)> out,
                      Core::Frontend::SoftwareKeyboardParameters parameters) const override;
     void SendTextCheckDialog(std::u16string error_message) const override;
 
+signals:
+    void MainWindowGetText(Core::Frontend::SoftwareKeyboardParameters parameters) const;
+    void MainWindowTextCheckDialog(std::u16string error_message) const;
+
+public slots:
+    void MainWindowFinishedText(std::optional<std::u16string> text);
+
 private:
-    GMainWindow& main_window;
+    mutable std::function<void(std::optional<std::u16string>)> text_output;
 };

src/yuzu/main.cpp

@@ -207,7 +207,7 @@ GMainWindow::~GMainWindow() {
         delete render_window;
 }
 
-std::optional<std::u16string> GMainWindow::SoftwareKeyboardGetText(
+void GMainWindow::SoftwareKeyboardGetText(
     const Core::Frontend::SoftwareKeyboardParameters& parameters) {
     QtSoftwareKeyboardDialog dialog(this, parameters);
     dialog.setWindowFlags(Qt::Dialog | Qt::CustomizeWindowHint | Qt::WindowTitleHint |
@@ -216,9 +216,9 @@ std::optional<std::u16string> GMainWindow::SoftwareKeyboardGetText(
     dialog.exec();
 
     if (!dialog.GetStatus())
-        return std::nullopt;
+        emit SoftwareKeyboardFinishedText(std::nullopt);
 
-    return dialog.GetText();
+    emit SoftwareKeyboardFinishedText(dialog.GetText());
 }
 
 void GMainWindow::SoftwareKeyboardInvokeCheckDialog(std::u16string error_message) {

src/yuzu/main.h

@@ -99,9 +99,10 @@ signals:
     // Signal that tells widgets to update icons to use the current theme
     void UpdateThemedIcons();
 
+    void SoftwareKeyboardFinishedText(std::optional<std::u16string> text);
+
 public slots:
-    std::optional<std::u16string> SoftwareKeyboardGetText(
-        const Core::Frontend::SoftwareKeyboardParameters& parameters);
+    void SoftwareKeyboardGetText(const Core::Frontend::SoftwareKeyboardParameters& parameters);
     void SoftwareKeyboardInvokeCheckDialog(std::u16string error_message);
 
 private: