6 files changed, 304 insertions, 25 deletions

diff --git a/src/core/frontend/applets/controller.h b/src/core/frontend/applets/controller.h
index 0908f2b69..a227f15cd 100644
--- a/src/core/frontend/applets/controller.h
+++ b/src/core/frontend/applets/controller.h
@@ -11,6 +11,7 @@
 namespace Core::Frontend {
 
 using BorderColor = std::array<u8, 4>;
+using ExplainText = std::array<char, 0x81>;
 
 struct ControllerParameters {
     s8 min_players{};
@@ -19,6 +20,8 @@ struct ControllerParameters {
     bool enable_single_mode{};
     bool enable_border_color{};
     std::vector<BorderColor> border_colors{};
+    bool enable_explain_text{};
+    std::vector<ExplainText> explain_text{};
     bool allow_pro_controller{};
     bool allow_handheld{};
     bool allow_dual_joycons{};
diff --git a/src/core/hle/service/am/applets/controller.cpp b/src/core/hle/service/am/applets/controller.cpp
index 2a45a388f..63c85256d 100644
--- a/src/core/hle/service/am/applets/controller.cpp
+++ b/src/core/hle/service/am/applets/controller.cpp
@@ -19,8 +19,8 @@ namespace Service::AM::Applets {
 [[maybe_unused]] constexpr ResultCode ERR_CONTROLLER_APPLET_3102{ErrorModule::HID, 3102};
 
 static Core::Frontend::ControllerParameters ConvertToFrontendParameters(
-    ControllerSupportArgPrivate private_arg, ControllerSupportArgHeader header,
-    std::vector<IdentificationColor> identification_colors) {
+    ControllerSupportArgPrivate private_arg, ControllerSupportArgHeader header, bool enable_text,
+    std::vector<IdentificationColor> identification_colors, std::vector<ExplainText> text) {
     HID::Controller_NPad::NPadType npad_style_set;
     npad_style_set.raw = private_arg.style_set;
 
@@ -31,6 +31,8 @@ static Core::Frontend::ControllerParameters ConvertToFrontendParameters(
         .enable_single_mode = header.enable_single_mode,
         .enable_border_color = header.enable_identification_color,
         .border_colors = identification_colors,
+        .enable_explain_text = enable_text,
+        .explain_text = text,
         .allow_pro_controller = npad_style_set.pro_controller == 1,
         .allow_handheld = npad_style_set.handheld == 1,
         .allow_dual_joycons = npad_style_set.joycon_dual == 1,
@@ -126,31 +128,38 @@ void Controller::Execute() {
             case LibraryAppletVersion::Version5:
                 return ConvertToFrontendParameters(
                     controller_private_arg, controller_user_arg_old.header,
+                    controller_user_arg_old.enable_explain_text,
                     std::vector<IdentificationColor>(
                         controller_user_arg_old.identification_colors.begin(),
-                        controller_user_arg_old.identification_colors.end()));
+                        controller_user_arg_old.identification_colors.end()),
+                    std::vector<ExplainText>(controller_user_arg_old.explain_text.begin(),
+                                             controller_user_arg_old.explain_text.end()));
             case LibraryAppletVersion::Version7:
             default:
                 return ConvertToFrontendParameters(
                     controller_private_arg, controller_user_arg_new.header,
+                    controller_user_arg_new.enable_explain_text,
                     std::vector<IdentificationColor>(
                         controller_user_arg_new.identification_colors.begin(),
-                        controller_user_arg_new.identification_colors.end()));
+                        controller_user_arg_new.identification_colors.end()),
+                    std::vector<ExplainText>(controller_user_arg_new.explain_text.begin(),
+                                             controller_user_arg_new.explain_text.end()));
             }
         }();
 
         is_single_mode = parameters.enable_single_mode;
 
-        LOG_DEBUG(
-            Service_HID,
-            "Controller Parameters: min_players={}, max_players={}, keep_controllers_connected={}, "
-            "enable_single_mode={}, enable_border_color={}, allow_pro_controller={}, "
-            "allow_handheld={}, allow_dual_joycons={}, allow_left_joycon={}, allow_right_joycon={}",
-            parameters.min_players, parameters.max_players, parameters.keep_controllers_connected,
-            parameters.enable_single_mode, parameters.enable_border_color,
-            parameters.allow_pro_controller, parameters.allow_handheld,
-            parameters.allow_dual_joycons, parameters.allow_left_joycon,
-            parameters.allow_right_joycon);
+        LOG_DEBUG(Service_HID,
+                  "Controller Parameters: min_players={}, max_players={}, "
+                  "keep_controllers_connected={}, enable_single_mode={}, enable_border_color={}, "
+                  "enable_explain_text={}, allow_pro_controller={}, allow_handheld={}, "
+                  "allow_dual_joycons={}, allow_left_joycon={}, allow_right_joycon={}",
+                  parameters.min_players, parameters.max_players,
+                  parameters.keep_controllers_connected, parameters.enable_single_mode,
+                  parameters.enable_border_color, parameters.enable_explain_text,
+                  parameters.allow_pro_controller, parameters.allow_handheld,
+                  parameters.allow_dual_joycons, parameters.allow_left_joycon,
+                  parameters.allow_right_joycon);
 
         frontend.ReconfigureControllers([this] { ConfigurationComplete(); }, parameters);
         break;
diff --git a/src/core/hle/service/am/applets/controller.h b/src/core/hle/service/am/applets/controller.h
index 90a78d508..31ba2af4f 100644
--- a/src/core/hle/service/am/applets/controller.h
+++ b/src/core/hle/service/am/applets/controller.h
@@ -16,6 +16,7 @@ class System;
 namespace Service::AM::Applets {
 
 using IdentificationColor = std::array<u8, 4>;
+using ExplainText = std::array<char, 0x81>;
 
 enum class LibraryAppletVersion : u32_le {
     Version3 = 0x3, // 1.0.0 - 2.3.0
@@ -65,7 +66,7 @@ struct ControllerSupportArgOld {
     ControllerSupportArgHeader header{};
     std::array<IdentificationColor, 4> identification_colors{};
     bool enable_explain_text{};
-    std::array<std::array<char, 0x81>, 4> explain_text{};
+    std::array<ExplainText, 4> explain_text{};
 };
 static_assert(sizeof(ControllerSupportArgOld) == 0x21C,
               "ControllerSupportArgOld has incorrect size.");
@@ -75,7 +76,7 @@ struct ControllerSupportArgNew {
     ControllerSupportArgHeader header{};
     std::array<IdentificationColor, 8> identification_colors{};
     bool enable_explain_text{};
-    std::array<std::array<char, 0x81>, 8> explain_text{};
+    std::array<ExplainText, 8> explain_text{};
 };
 static_assert(sizeof(ControllerSupportArgNew) == 0x430,
               "ControllerSupportArgNew has incorrect size.");
diff --git a/src/yuzu/applets/controller.cpp b/src/yuzu/applets/controller.cpp
index 8ccf61be0..7482174c6 100644
--- a/src/yuzu/applets/controller.cpp
+++ b/src/yuzu/applets/controller.cpp
@@ -4,6 +4,7 @@
 
 #include <algorithm>
 
+#include "common/string_util.h"
 #include "core/core.h"
 #include "core/hle/lock.h"
 #include "core/hle/service/hid/controllers/npad.h"
@@ -45,6 +46,7 @@ void UpdateController(Settings::ControllerType controller_type, std::size_t npad
     npad.UpdateControllerAt(npad.MapSettingsTypeToNPad(controller_type), npad_index, connected);
 }
 
+// Returns true if the given controller type is compatible with the given parameters.
 bool IsControllerCompatible(Settings::ControllerType controller_type,
                             Core::Frontend::ControllerParameters parameters) {
     switch (controller_type) {
@@ -140,6 +142,12 @@ QtControllerSelectorDialog::QtControllerSelectorDialog(
          ui->checkboxPlayer8LED4},
     }};
 
+    explain_text_labels = {
+        ui->labelPlayer1Explain, ui->labelPlayer2Explain, ui->labelPlayer3Explain,
+        ui->labelPlayer4Explain, ui->labelPlayer5Explain, ui->labelPlayer6Explain,
+        ui->labelPlayer7Explain, ui->labelPlayer8Explain,
+    };
+
     emulated_controllers = {
         ui->comboPlayer1Emulated, ui->comboPlayer2Emulated, ui->comboPlayer3Emulated,
         ui->comboPlayer4Emulated, ui->comboPlayer5Emulated, ui->comboPlayer6Emulated,
@@ -200,6 +208,8 @@ QtControllerSelectorDialog::QtControllerSelectorDialog(
                                           Settings::ControllerType::Handheld);
                     });
         }
+
+        SetExplainText(i);
     }
 
     connect(ui->inputConfigButton, &QPushButton::clicked, this,
@@ -468,6 +478,16 @@ void QtControllerSelectorDialog::UpdateBorderColor(std::size_t player_index) {
                 .arg(parameters.border_colors[player_index][3])));
 }
 
+void QtControllerSelectorDialog::SetExplainText(std::size_t player_index) {
+    if (!parameters.enable_explain_text || player_index >= parameters.max_players) {
+        return;
+    }
+
+    explain_text_labels[player_index]->setText(QString::fromStdString(
+        Common::StringFromFixedZeroTerminatedBuffer(parameters.explain_text[player_index].data(),
+                                                    parameters.explain_text[player_index].size())));
+}
+
 void QtControllerSelectorDialog::UpdateDockedState(bool is_handheld) {
     // Disallow changing the console mode if the controller type is handheld.
     ui->radioDocked->setEnabled(!is_handheld);
diff --git a/src/yuzu/applets/controller.h b/src/yuzu/applets/controller.h
index 1ec290e6c..db59dd631 100644
--- a/src/yuzu/applets/controller.h
+++ b/src/yuzu/applets/controller.h
@@ -59,6 +59,9 @@ private:
     // Updates the border color per player.
     void UpdateBorderColor(std::size_t player_index);
 
+    // Sets the "Explain Text" per player.
+    void SetExplainText(std::size_t player_index);
+
     // Updates the console mode.
     void UpdateDockedState(bool is_handheld);
 
@@ -94,6 +97,9 @@ private:
     // LED patterns for currently connected controllers/players.
     std::array<std::array<QCheckBox*, 4>, 8> led_patterns_boxes;
 
+    // Labels representing additional information known as "Explain Text" per player.
+    std::array<QLabel*, 8> explain_text_labels;
+
     // Comboboxes with a list of emulated controllers per player.
     std::array<QComboBox*, 8> emulated_controllers;
 
diff --git a/src/yuzu/applets/controller.ui b/src/yuzu/applets/controller.ui
index d7db46613..c4108a979 100644
--- a/src/yuzu/applets/controller.ui
+++ b/src/yuzu/applets/controller.ui
@@ -468,13 +468,43 @@
                </widget>
               </item>
               <item>
-               <widget class="QWidget" name="fakeSpacerPlayer4" native="true">
+               <widget class="QWidget" name="Player4Explain" native="true">
                 <property name="minimumSize">
                  <size>
                   <width>0</width>
                   <height>10</height>
                  </size>
                 </property>
+                <property name="maximumSize">
+                 <size>
+                  <width>150</width>
+                  <height>16777215</height>
+                 </size>
+                </property>
+                <layout class="QVBoxLayout" name="verticalLayout_39">
+                 <property name="spacing">
+                  <number>0</number>
+                 </property>
+                 <property name="leftMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="topMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="rightMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="bottomMargin">
+                  <number>0</number>
+                 </property>
+                 <item>
+                  <widget class="QLabel" name="labelPlayer4Explain">
+                   <property name="alignment">
+                    <set>Qt::AlignCenter</set>
+                   </property>
+                  </widget>
+                 </item>
+                </layout>
                </widget>
               </item>
               <item>
@@ -635,13 +665,43 @@
                </widget>
               </item>
               <item>
-               <widget class="QWidget" name="fakeSpacerPlayer2" native="true">
+               <widget class="QWidget" name="Player2Explain" native="true">
                 <property name="minimumSize">
                  <size>
                   <width>0</width>
                   <height>10</height>
                  </size>
                 </property>
+                <property name="maximumSize">
+                 <size>
+                  <width>150</width>
+                  <height>16777215</height>
+                 </size>
+                </property>
+                <layout class="QVBoxLayout" name="verticalLayout_37">
+                 <property name="spacing">
+                  <number>0</number>
+                 </property>
+                 <property name="leftMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="topMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="rightMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="bottomMargin">
+                  <number>0</number>
+                 </property>
+                 <item>
+                  <widget class="QLabel" name="labelPlayer2Explain">
+                   <property name="alignment">
+                    <set>Qt::AlignCenter</set>
+                   </property>
+                  </widget>
+                 </item>
+                </layout>
                </widget>
               </item>
               <item>
@@ -806,13 +866,43 @@
                </widget>
               </item>
               <item>
-               <widget class="QWidget" name="fakeSpacerPlayer1" native="true">
+               <widget class="QWidget" name="Player1Explain" native="true">
                 <property name="minimumSize">
                  <size>
                   <width>0</width>
                   <height>10</height>
                  </size>
                 </property>
+                <property name="maximumSize">
+                 <size>
+                  <width>150</width>
+                  <height>16777215</height>
+                 </size>
+                </property>
+                <layout class="QVBoxLayout" name="verticalLayout_36">
+                 <property name="spacing">
+                  <number>0</number>
+                 </property>
+                 <property name="leftMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="topMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="rightMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="bottomMargin">
+                  <number>0</number>
+                 </property>
+                 <item>
+                  <widget class="QLabel" name="labelPlayer1Explain">
+                   <property name="alignment">
+                    <set>Qt::AlignCenter</set>
+                   </property>
+                  </widget>
+                 </item>
+                </layout>
                </widget>
               </item>
               <item>
@@ -1086,13 +1176,43 @@
                </widget>
               </item>
               <item>
-               <widget class="QWidget" name="fakeSpacerPlayer3" native="true">
+               <widget class="QWidget" name="Player3Explain" native="true">
                 <property name="minimumSize">
                  <size>
                   <width>0</width>
                   <height>10</height>
                  </size>
                 </property>
+                <property name="maximumSize">
+                 <size>
+                  <width>150</width>
+                  <height>16777215</height>
+                 </size>
+                </property>
+                <layout class="QVBoxLayout" name="verticalLayout_38">
+                 <property name="spacing">
+                  <number>0</number>
+                 </property>
+                 <property name="leftMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="topMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="rightMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="bottomMargin">
+                  <number>0</number>
+                 </property>
+                 <item>
+                  <widget class="QLabel" name="labelPlayer3Explain">
+                   <property name="alignment">
+                    <set>Qt::AlignCenter</set>
+                   </property>
+                  </widget>
+                 </item>
+                </layout>
                </widget>
               </item>
               <item>
@@ -1296,13 +1416,43 @@
                </widget>
               </item>
               <item>
-               <widget class="QWidget" name="fakeSpacerPlayer7" native="true">
+               <widget class="QWidget" name="Player7Explain" native="true">
                 <property name="minimumSize">
                  <size>
                   <width>0</width>
                   <height>10</height>
                  </size>
                 </property>
+                <property name="maximumSize">
+                 <size>
+                  <width>150</width>
+                  <height>16777215</height>
+                 </size>
+                </property>
+                <layout class="QVBoxLayout" name="verticalLayout_42">
+                 <property name="spacing">
+                  <number>0</number>
+                 </property>
+                 <property name="leftMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="topMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="rightMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="bottomMargin">
+                  <number>0</number>
+                 </property>
+                 <item>
+                  <widget class="QLabel" name="labelPlayer7Explain">
+                   <property name="alignment">
+                    <set>Qt::AlignCenter</set>
+                   </property>
+                  </widget>
+                 </item>
+                </layout>
                </widget>
               </item>
               <item>
@@ -1463,13 +1613,43 @@
                </widget>
               </item>
               <item>
-               <widget class="QWidget" name="fakeSpacerPlayer8" native="true">
+               <widget class="QWidget" name="Player8Explain" native="true">
                 <property name="minimumSize">
                  <size>
                   <width>0</width>
                   <height>10</height>
                  </size>
                 </property>
+                <property name="maximumSize">
+                 <size>
+                  <width>150</width>
+                  <height>16777215</height>
+                 </size>
+                </property>
+                <layout class="QVBoxLayout" name="verticalLayout_35">
+                 <property name="spacing">
+                  <number>0</number>
+                 </property>
+                 <property name="leftMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="topMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="rightMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="bottomMargin">
+                  <number>0</number>
+                 </property>
+                 <item>
+                  <widget class="QLabel" name="labelPlayer8Explain">
+                   <property name="alignment">
+                    <set>Qt::AlignCenter</set>
+                   </property>
+                  </widget>
+                 </item>
+                </layout>
                </widget>
               </item>
               <item>
@@ -1634,13 +1814,43 @@
                </widget>
               </item>
               <item>
-               <widget class="QWidget" name="fakeSpacerPlayer5" native="true">
+               <widget class="QWidget" name="Player5Explain" native="true">
                 <property name="minimumSize">
                  <size>
                   <width>0</width>
                   <height>10</height>
                  </size>
                 </property>
+                <property name="maximumSize">
+                 <size>
+                  <width>150</width>
+                  <height>16777215</height>
+                 </size>
+                </property>
+                <layout class="QVBoxLayout" name="verticalLayout_40">
+                 <property name="spacing">
+                  <number>0</number>
+                 </property>
+                 <property name="leftMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="topMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="rightMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="bottomMargin">
+                  <number>0</number>
+                 </property>
+                 <item>
+                  <widget class="QLabel" name="labelPlayer5Explain">
+                   <property name="alignment">
+                    <set>Qt::AlignCenter</set>
+                   </property>
+                  </widget>
+                 </item>
+                </layout>
                </widget>
               </item>
               <item>
@@ -1801,13 +2011,43 @@
                </widget>
               </item>
               <item>
-               <widget class="QWidget" name="fakeSpacerPlayer6" native="true">
+               <widget class="QWidget" name="Player6Explain" native="true">
                 <property name="minimumSize">
                  <size>
                   <width>0</width>
                   <height>10</height>
                  </size>
                 </property>
+                <property name="maximumSize">
+                 <size>
+                  <width>150</width>
+                  <height>16777215</height>
+                 </size>
+                </property>
+                <layout class="QVBoxLayout" name="verticalLayout_41">
+                 <property name="spacing">
+                  <number>0</number>
+                 </property>
+                 <property name="leftMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="topMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="rightMargin">
+                  <number>0</number>
+                 </property>
+                 <property name="bottomMargin">
+                  <number>0</number>
+                 </property>
+                 <item>
+                  <widget class="QLabel" name="labelPlayer6Explain">
+                   <property name="alignment">
+                    <set>Qt::AlignCenter</set>
+                   </property>
+                  </widget>
+                 </item>
+                </layout>
                </widget>
               </item>
               <item>
@@ -2395,7 +2635,7 @@
          <item alignment="Qt::AlignBottom">
           <widget class="QDialogButtonBox" name="buttonBox">
            <property name="enabled">
-            <bool>false</bool>
+            <bool>true</bool>
            </property>
            <property name="standardButtons">
             <set>QDialogButtonBox::Ok</set>