Merge pull request #4700 from zhaowenlan1779/swkbd-2

applets/swkbd: Add callback support

src/citra_qt/applets/mii_selector.cpp

@@ -14,20 +14,6 @@
 #include "core/file_sys/file_backend.h"
 #include "core/hle/service/ptm/ptm.h"
 
-/**
- * Converts a UTF-16 text in a container to a UTF-8 std::string.
- */
-template <typename T>
-std::string TextFromBuffer(const T& text) {
-    const auto text_end = std::find(text.begin(), text.end(), u'\0');
-    const std::size_t text_size = std::distance(text.begin(), text_end);
-    std::u16string buffer(text_size, 0);
-    std::transform(text.begin(), text_end, buffer.begin(), [](u16_le character) {
-        return static_cast<char16_t>(static_cast<u16>(character));
-    });
-    return Common::UTF16ToUTF8(buffer);
-}
-
 QtMiiSelectorDialog::QtMiiSelectorDialog(QWidget* parent, QtMiiSelector* mii_selector_)
     : QDialog(parent), mii_selector(mii_selector_) {
     using namespace Frontend;
@@ -71,7 +57,7 @@ QtMiiSelectorDialog::QtMiiSelectorDialog(QWidget* parent, QtMiiSelector* mii_sel
                 file->Read(saved_miis_offset, sizeof(mii), mii_raw.data());
                 std::memcpy(&mii, mii_raw.data(), sizeof(mii));
                 if (mii.mii_id != 0) {
-                    std::string name = TextFromBuffer(mii.mii_name);
+                    std::string name = Common::UTF16BufferToUTF8(mii.mii_name);
                     miis.push_back(mii);
                     combobox->addItem(QString::fromStdString(name));
                 }

src/citra_qt/applets/swkbd.cpp

@@ -109,14 +109,20 @@ void QtKeyboardDialog::HandleValidationError(Frontend::ValidationError error) {
 
 QtKeyboard::QtKeyboard(QWidget& parent_) : parent(parent_) {}
 
-void QtKeyboard::Setup(const Frontend::KeyboardConfig& config) {
+void QtKeyboard::Execute(const Frontend::KeyboardConfig& config) {
-    SoftwareKeyboard::Setup(config);
+    SoftwareKeyboard::Execute(config);
     if (this->config.button_config != Frontend::ButtonConfig::None) {
         ok_id = static_cast<u8>(this->config.button_config);
     }
     QMetaObject::invokeMethod(this, "OpenInputDialog", Qt::BlockingQueuedConnection);
 }
 
+void QtKeyboard::ShowError(const std::string& error) {
+    QString message = QString::fromStdString(error);
+    QMetaObject::invokeMethod(this, "ShowErrorDialog", Qt::BlockingQueuedConnection,
+                              Q_ARG(QString, message));
+}
+
 void QtKeyboard::OpenInputDialog() {
     QtKeyboardDialog dialog(&parent, this);
     dialog.setWindowFlags(Qt::Dialog | Qt::CustomizeWindowHint | Qt::WindowTitleHint |
@@ -127,3 +133,7 @@ void QtKeyboard::OpenInputDialog() {
              dialog.button);
     Finalize(dialog.text.toStdString(), dialog.button);
 }
+
+void QtKeyboard::ShowErrorDialog(QString message) {
+    QMessageBox::critical(&parent, tr("Software Keyboard"), message);
+}

src/citra_qt/applets/swkbd.h

@@ -48,10 +48,12 @@ class QtKeyboard final : public QObject, public Frontend::SoftwareKeyboard {
 
 public:
     explicit QtKeyboard(QWidget& parent);
-    void Setup(const Frontend::KeyboardConfig& config) override;
+    void Execute(const Frontend::KeyboardConfig& config) override;
+    void ShowError(const std::string& error) override;
 
 private:
     Q_INVOKABLE void OpenInputDialog();
+    Q_INVOKABLE void ShowErrorDialog(QString message);
 
     /// Index of the buttons
     u8 ok_id;

src/common/string_util.h

@@ -4,10 +4,12 @@
 
 #pragma once
 
+#include <algorithm>
 #include <cstddef>
 #include <string>
 #include <vector>
 #include "common/common_types.h"
+#include "common/swap.h"
 
 namespace Common {
 
@@ -58,6 +60,20 @@ bool ComparePartialString(InIt begin, InIt end, const char* other) {
     return (begin == end) == (*other == '\0');
 }
 
+/**
+ * Converts a UTF-16 text in a container to a UTF-8 std::string.
+ */
+template <typename T>
+std::string UTF16BufferToUTF8(const T& text) {
+    const auto text_end = std::find(text.begin(), text.end(), u'\0');
+    const std::size_t text_size = std::distance(text.begin(), text_end);
+    std::u16string buffer(text_size, 0);
+    std::transform(text.begin(), text_end, buffer.begin(), [](u16_le character) {
+        return static_cast<char16_t>(static_cast<u16>(character));
+    });
+    return UTF16ToUTF8(buffer);
+}
+
 /**
  * Creates a std::string from a fixed-size NUL-terminated char buffer. If the buffer isn't
  * NUL-terminated then the string ends at max_len characters.

src/core/frontend/applets/swkbd.cpp

@@ -39,10 +39,6 @@ ValidationError SoftwareKeyboard::ValidateFilters(const std::string& input) cons
         // TODO: check the profanity filter
         LOG_INFO(Frontend, "App requested swkbd profanity filter, but its not implemented.");
     }
-    if (config.filters.enable_callback) {
-        // TODO: check the callback
-        LOG_INFO(Frontend, "App requested a swkbd callback, but its not implemented.");
-    }
     return ValidationError::None;
 }
 
@@ -132,11 +128,21 @@ ValidationError SoftwareKeyboard::Finalize(const std::string& text, u8 button) {
         return error;
     }
     data = {text, button};
+    data_ready = true;
     return ValidationError::None;
 }
 
-void DefaultKeyboard::Setup(const Frontend::KeyboardConfig& config) {
+bool SoftwareKeyboard::DataReady() const {
-    SoftwareKeyboard::Setup(config);
+    return data_ready;
+}
+
+const KeyboardData& SoftwareKeyboard::ReceiveData() {
+    data_ready = false;
+    return data;
+}
+
+void DefaultKeyboard::Execute(const Frontend::KeyboardConfig& config) {
+    SoftwareKeyboard::Execute(config);
 
     auto cfg = Service::CFG::GetModule(Core::System::GetInstance());
     ASSERT_MSG(cfg, "CFG Module missing!");
@@ -157,4 +163,8 @@ void DefaultKeyboard::Setup(const Frontend::KeyboardConfig& config) {
     }
 }
 
+void DefaultKeyboard::ShowError(const std::string& error) {
+    LOG_ERROR(Applet_SWKBD, "Default keyboard text is unaccepted! error: {}", error);
+}
+
 } // namespace Frontend

src/core/frontend/applets/swkbd.h

@@ -4,6 +4,7 @@
 
 #pragma once
 
+#include <atomic>
 #include <unordered_map>
 #include <utility>
 #include <vector>
@@ -82,13 +83,27 @@ enum class ValidationError {
 
 class SoftwareKeyboard {
 public:
-    virtual void Setup(const KeyboardConfig& config) {
+    /**
-        this->config = KeyboardConfig(config);
+     * Executes the software keyboard, configured with the given parameters.
+     */
+    virtual void Execute(const KeyboardConfig& config) {
+        this->config = config;
     }
 
-    const KeyboardData& ReceiveData() const {
+    /**
-        return data;
+     * Whether the result data is ready to be received.
-    }
+     */
+    bool DataReady() const;
+
+    /**
+     * Receives the current result data stored in the applet, and clears the ready state.
+     */
+    const KeyboardData& ReceiveData();
+
+    /**
+     * Shows an error text returned by the callback.
+     */
+    virtual void ShowError(const std::string& error) = 0;
 
     /**
      * Validates if the provided string breaks any of the filter rules. This is meant to be called
@@ -118,11 +133,14 @@ public:
 protected:
     KeyboardConfig config;
     KeyboardData data;
+
+    std::atomic_bool data_ready = false;
 };
 
 class DefaultKeyboard final : public SoftwareKeyboard {
 public:
-    void Setup(const KeyboardConfig& config) override;
+    void Execute(const KeyboardConfig& config) override;
+    void ShowError(const std::string& error) override;
 };
 
 } // namespace Frontend

src/core/hle/applets/mii_selector.cpp

@@ -19,20 +19,6 @@
 
 namespace HLE::Applets {
 
-/**
- * Converts a UTF-16 text in a container to a UTF-8 std::string.
- */
-template <typename T>
-std::string TextFromBuffer(const T& text) {
-    const auto text_end = std::find(text.begin(), text.end(), u'\0');
-    const std::size_t text_size = std::distance(text.begin(), text_end);
-    std::u16string buffer(text_size, 0);
-    std::transform(text.begin(), text_end, buffer.begin(), [](u16_le character) {
-        return static_cast<char16_t>(static_cast<u16>(character));
-    });
-    return Common::UTF16ToUTF8(buffer);
-}
-
 ResultCode MiiSelector::ReceiveParameter(const Service::APT::MessageParameter& parameter) {
     if (parameter.signal != Service::APT::SignalType::Request) {
         LOG_ERROR(Service_APT, "unsupported signal {}", static_cast<u32>(parameter.signal));
@@ -156,7 +142,7 @@ MiiResult MiiSelector::GetStandardMiiResult() {
 Frontend::MiiSelectorConfig MiiSelector::ToFrontendConfig(const MiiConfig& config) const {
     Frontend::MiiSelectorConfig frontend_config;
     frontend_config.enable_cancel_button = config.enable_cancel_button == 1;
-    frontend_config.title = TextFromBuffer(config.title);
+    frontend_config.title = Common::UTF16BufferToUTF8(config.title);
     frontend_config.initially_selected_mii_index = config.initially_selected_mii_index;
     return frontend_config;
 }

src/core/hle/applets/swkbd.cpp

@@ -22,20 +22,15 @@
 namespace HLE::Applets {
 
 ResultCode SoftwareKeyboard::ReceiveParameter(Service::APT::MessageParameter const& parameter) {
-    if (parameter.signal != Service::APT::SignalType::Request) {
+    switch (parameter.signal) {
-        LOG_ERROR(Service_APT, "unsupported signal {}", static_cast<u32>(parameter.signal));
+    case Service::APT::SignalType::Request: {
-        UNIMPLEMENTED();
-        // TODO(Subv): Find the right error code
-        return ResultCode(-1);
-    }
-
         // The LibAppJustStarted message contains a buffer with the size of the framebuffer shared
         // memory.
         // Create the SharedMemory that will hold the framebuffer data
         Service::APT::CaptureBufferInfo capture_info;
         ASSERT(sizeof(capture_info) == parameter.buffer.size());
 
-    memcpy(&capture_info, parameter.buffer.data(), sizeof(capture_info));
+        std::memcpy(&capture_info, parameter.buffer.data(), sizeof(capture_info));
 
         using Kernel::MemoryPermission;
         // Create a SharedMemory that directly points to this heap block.
@@ -53,6 +48,48 @@ ResultCode SoftwareKeyboard::ReceiveParameter(Service::APT::MessageParameter con
 
         SendParameter(result);
         return RESULT_SUCCESS;
+    }
+
+    case Service::APT::SignalType::Message: {
+        // Callback result
+        ASSERT_MSG(parameter.buffer.size() == sizeof(config),
+                   "The size of the parameter (SoftwareKeyboardConfig) is wrong");
+
+        std::memcpy(&config, parameter.buffer.data(), parameter.buffer.size());
+
+        switch (config.callback_result) {
+        case SoftwareKeyboardCallbackResult::OK:
+            // Finish execution
+            Finalize();
+            return RESULT_SUCCESS;
+
+        case SoftwareKeyboardCallbackResult::Close:
+            // Let the frontend display error and quit
+            frontend_applet->ShowError(Common::UTF16BufferToUTF8(config.callback_msg));
+            config.return_code = SoftwareKeyboardResult::BannedInput;
+            config.text_offset = config.text_length = 0;
+            Finalize();
+            return RESULT_SUCCESS;
+
+        case SoftwareKeyboardCallbackResult::Continue:
+            // Let the frontend display error and get input again
+            // The input will be sent for validation again on next Update().
+            frontend_applet->ShowError(Common::UTF16BufferToUTF8(config.callback_msg));
+            frontend_applet->Execute(ToFrontendConfig(config));
+            return RESULT_SUCCESS;
+
+        default:
+            UNREACHABLE();
+        }
+    }
+
+    default: {
+        LOG_ERROR(Service_APT, "unsupported signal {}", static_cast<u32>(parameter.signal));
+        UNIMPLEMENTED();
+        // TODO(Subv): Find the right error code
+        return ResultCode(-1);
+    }
+    }
 }
 
 ResultCode SoftwareKeyboard::StartImpl(Service::APT::AppletStartupParameter const& parameter) {
@@ -71,16 +108,18 @@ ResultCode SoftwareKeyboard::StartImpl(Service::APT::AppletStartupParameter cons
     frontend_applet = Core::System::GetInstance().GetSoftwareKeyboard();
     ASSERT(frontend_applet);
 
-    KeyboardConfig frontend_config = ToFrontendConfig(config);
+    frontend_applet->Execute(ToFrontendConfig(config));
-    frontend_applet->Setup(frontend_config);
 
     is_running = true;
     return RESULT_SUCCESS;
 }
 
 void SoftwareKeyboard::Update() {
+    if (!frontend_applet->DataReady())
+        return;
+
     using namespace Frontend;
-    KeyboardData data(frontend_applet->ReceiveData());
+    const KeyboardData& data = frontend_applet->ReceiveData();
     std::u16string text = Common::UTF8ToUTF16(data.text);
     memcpy(text_memory->GetPointer(), text.c_str(), text.length() * sizeof(char16_t));
     switch (config.num_buttons_m1) {
@@ -114,9 +153,18 @@ void SoftwareKeyboard::Update() {
     config.text_length = static_cast<u16>(text.size());
     config.text_offset = 0;
 
-    // TODO(Subv): We're finalizing the applet immediately after it's started,
+    if (config.filter_flags & HLE::Applets::SoftwareKeyboardFilter::Callback) {
-    // but we should defer this call until after all the input has been collected.
+        // Send the message to invoke callback
+        Service::APT::MessageParameter message;
+        message.buffer.resize(sizeof(SoftwareKeyboardConfig));
+        std::memcpy(message.buffer.data(), &config, message.buffer.size());
+        message.signal = Service::APT::SignalType::Message;
+        message.destination_id = Service::APT::AppletId::Application;
+        message.sender_id = id;
+        SendParameter(message);
+    } else {
         Finalize();
+    }
 }
 
 void SoftwareKeyboard::DrawScreenKeyboard() {
@@ -147,14 +195,7 @@ Frontend::KeyboardConfig SoftwareKeyboard::ToFrontendConfig(
     frontend_config.multiline_mode = config.multiline;
     frontend_config.max_text_length = config.max_text_length;
     frontend_config.max_digits = config.max_digits;
-
+    frontend_config.hint_text = Common::UTF16BufferToUTF8(config.hint_text);
-    std::size_t text_size = config.hint_text.size();
-    const auto text_end = std::find(config.hint_text.begin(), config.hint_text.end(), u'\0');
-    if (text_end != config.hint_text.end())
-        text_size = std::distance(config.hint_text.begin(), text_end);
-    std::u16string buffer(text_size, 0);
-    std::memcpy(buffer.data(), config.hint_text.data(), text_size * sizeof(u16));
-    frontend_config.hint_text = Common::UTF16ToUTF8(buffer);
     frontend_config.has_custom_button_text =
         !std::all_of(config.button_text.begin(), config.button_text.end(),
                      [](std::array<u16, HLE::Applets::MAX_BUTTON_TEXT_LEN + 1> x) {
@@ -162,14 +203,7 @@ Frontend::KeyboardConfig SoftwareKeyboard::ToFrontendConfig(
                      });
     if (frontend_config.has_custom_button_text) {
         for (const auto& text : config.button_text) {
-            text_size = text.size();
+            frontend_config.button_text.push_back(Common::UTF16BufferToUTF8(text));
-            const auto text_end = std::find(text.begin(), text.end(), u'\0');
-            if (text_end != text.end())
-                text_size = std::distance(text.begin(), text_end);
-
-            buffer.resize(text_size);
-            std::memcpy(buffer.data(), text.data(), text_size * sizeof(u16));
-            frontend_config.button_text.push_back(Common::UTF16ToUTF8(buffer));
         }
     }
     frontend_config.filters.prevent_digit =

src/core/hle/applets/swkbd.h

@@ -161,7 +161,7 @@ struct SoftwareKeyboardConfig {
     u32_le text_offset; ///< Offset in the SharedMemory where the output text starts
     u16_le text_length; ///< Length in characters of the output text
 
-    s32_le callback_result;
+    enum_le<SoftwareKeyboardCallbackResult> callback_result;
     std::array<u16_le, MAX_CALLBACK_MSG_LEN + 1> callback_msg;
     bool skip_at_check;
     INSERT_PADDING_BYTES(0xAB);