Qt: Add per-page help to settings dialog

src/duckstation-qt/settingsdialog.cpp

@@ -9,7 +9,28 @@
 #include "qthostinterface.h"
 #include <QtWidgets/QTextEdit>
 
-static constexpr char DEFAULT_SETTING_HELP_TEXT[] = "Mouse over an option for additional information.";
+static constexpr char DEFAULT_SETTING_HELP_TEXT[] = "";
+
+static constexpr std::array<const char*, static_cast<int>(SettingsDialog::Category::Count)> s_category_help_text = {
+  {"<strong>General Settings</strong><hr>These options control how the emulator looks and behaves.<br><br>Mouse over "
+   "an option for additional information.",
+   "<strong>Console Settings</strong><hr>These options determine the configuration of the simulated "
+   "console.<br><br>Mouse over an option for additional information.",
+   "<strong>Game List Settings</strong><hr>The list above shows the directories which will be searched by DuckStation "
+   "to populate the game list. Search directories can be added, removed, and switched to recursive/non-recursive. "
+   "Additionally, the redump.org database can be downloaded or updated to provide titles for discs, as the discs "
+   "themselves do not provide title information.",
+   "<strong>Hotkey Settings</strong><hr>Binding a hotkey allows you to trigger events such as a resetting, powering "
+   "off, taking screenshots or saving/loading states at the press of a key/controller button. Hotkey titles are "
+   "self-explanatory.",
+   "<strong>Port Settings</strong><hr>This page lets you choose the type of controller you wish to simulate for the "
+   "console, and rebind the keys or host game controller buttons to your choosing. Clicking a binding will start a "
+   "count-down, in which case you should press the key or controller button/axis you wish to bind. If no button is "
+   "pressed and the timer lapses, the binding will be unchanged. To clear a binding, right-click the button.",
+   "<strong>GPU Settings</strong><hr>These options control the simulation of the GPU in the console. Various "
+   "enhancements are available, mouse over each for additional information.",
+   "<strong>Audio Settings</strong><hr>These options control the audio output of the console. Mouse over an option for "
+   "additional information."}};
 
 SettingsDialog::SettingsDialog(QtHostInterface* host_interface, QWidget* parent /* = nullptr */)
   : QDialog(parent), m_host_interface(host_interface)
@@ -34,9 +55,8 @@ SettingsDialog::SettingsDialog(QtHostInterface* host_interface, QWidget* parent
 
   m_ui.settingsCategory->setCurrentRow(0);
   m_ui.settingsContainer->setCurrentIndex(0);
+  m_ui.helpText->setText(tr(s_category_help_text[0]));
   connect(m_ui.settingsCategory, &QListWidget::currentRowChanged, this, &SettingsDialog::onCategoryCurrentRowChanged);
-
-  m_ui.helpText->setText(tr(DEFAULT_SETTING_HELP_TEXT));
 }
 
 SettingsDialog::~SettingsDialog() = default;
@@ -51,7 +71,9 @@ void SettingsDialog::setCategory(Category category)
 
 void SettingsDialog::onCategoryCurrentRowChanged(int row)
 {
+  Q_ASSERT(row < static_cast<int>(Category::Count));
   m_ui.settingsContainer->setCurrentIndex(row);
+  m_ui.helpText->setText(tr(s_category_help_text[row]));
 }
 
 void SettingsDialog::registerWidgetHelp(QObject* object, const char* title, const char* recommended_value,
@@ -88,7 +110,7 @@ bool SettingsDialog::eventFilter(QObject* object, QEvent* event)
     if (m_current_help_widget)
     {
       m_current_help_widget = nullptr;
-      m_ui.helpText->setText(tr(DEFAULT_SETTING_HELP_TEXT));
+      m_ui.helpText->setText(tr(s_category_help_text[m_ui.settingsCategory->currentRow()]));
     }
   }