Update docs

TOML.md

@@ -8,6 +8,7 @@ name = "My important BIOS file!"
 description = "We need this BIOS file please provide it!"
 category = "BIOS files"
 type = "filepicker"
+extensions = "bin,bios"
 required = true
 ```
 
@@ -18,4 +19,25 @@ where <CoreName> is the current core name.
 
 `name` is the pretty name of the setting that appears in the GUI.
 
-`description` is a description that appears when you hover the widget
+`description` is a description that appears when you hover the widget.
+
+`category` is the group this widget will appear in. It can be any value and widgets with the same category will be grouped together.
+
+`type` is the type of the widget. It can be `checkbox`, `filepicker`, `text`, `combo`, `slider`.
+
+If the type is filepicker, the setting name will be used in `HydraCore::loadFile()` once right before any rom is loaded.
+So for example if you create a filepicker with name `bios_file` and the user configures it to the path `/home/user/mybios.bin`, every time a game is loaded `HydraCore::loadFile("bios_file", "/home/user/mybios.bin")` will be called.
+Then the core developer can decide whether to do something with that path or not.
+
+`extensions` is only used by the filepicker to specify a comma separated list of allowed extensions.
+
+`required` is whether or not this field must not be left blank. Hydra won't allow users to load games otherwise.
+
+`default` is the default value of the setting. It can be a boolean (true/false) for checkboxes or string for filepickers/text inputs.
+
+`text_type` is the allowed type of text ie the charset. Leave empty to allow any character, or `num` for numeric, `hex` for hexadecimal or `pass` for password (hides the text in the gui)
+
+`combo_options` is a comma separated list of options for `combo` type
+
+`slider_min` is the minimum `slider` range
+`slider_max` is the maximum `slider` range

src/mainwindow.cxx

@@ -267,7 +267,8 @@ void MainWindow::draw_settings()
     ImGui::SetItemTooltip("Enable fancy GUI features that may hinder performance");
 
     auto& cores = Settings::GetCoreInfo();
-    ImGui::SeparatorText("Core specific settings");
+    if (cores.size() > 0)
+        ImGui::SeparatorText("Core specific settings");
     for (size_t i = 0; i < cores.size(); i++)
     {
         if (open_core_settings != -1)