input: Allow multiple keyboards to have different configurations

This patch checks for additional configuration sections so keyboards can
be matched by name or with udev properties. Running wayfire with '-d' will
log the sections that are being checked, for reference. This allows multiple
keyboards to be configured differently, whereas before, all keyboards used
the common configuration in the [input] section. To be clear, no additional
configuration is required. If no matching configuration section is found for
the device, [input] options will be used.

Fixes #2481.

src/api/wayfire/config-backend.hpp

@@ -49,7 +49,7 @@ class config_backend_t
      * described in input-device.xml
      */
     virtual std::shared_ptr<config::section_t> get_input_device_section(
-        wlr_input_device *device);
+        std::string const & prefix, wlr_input_device *device);
 
     virtual ~config_backend_t() = default;
 

src/core/plugin.cpp

@@ -44,7 +44,7 @@ static struct udev_property_and_desc
 };
 
 std::shared_ptr<config::section_t> wf::config_backend_t::get_input_device_section(
-    wlr_input_device *device)
+    std::string const & prefix, wlr_input_device *device)
 {
     auto& config = wf::get_core().config;
     std::shared_ptr<wf::config::section_t> section;
@@ -71,7 +71,7 @@ std::shared_ptr<config::section_t> wf::config_backend_t::get_input_device_sectio
                         continue;
                     }
 
-                    std::string name = std::string("input-device:") + nonull(value);
+                    std::string name = prefix + ":" + nonull(value);
                     LOGD("Checking for config section [", name, "] ",
                         pd.property_name, " (", pd.description, ")");
                     section = config.get_section(name);
@@ -86,7 +86,7 @@ std::shared_ptr<config::section_t> wf::config_backend_t::get_input_device_sectio
     }
 
     std::string name = nonull(device->name);
-    name = "input-device:" + name;
+    name = prefix + ":" + name;
     LOGD("Checking for config section [", name, "]");
     section = config.get_section(name);
     if (section)
@@ -96,7 +96,7 @@ std::shared_ptr<config::section_t> wf::config_backend_t::get_input_device_sectio
     }
 
     config.merge_section(
-        config.get_section("input-device")->clone_with_name(name));
+        config.get_section(prefix)->clone_with_name(name));
 
     return config.get_section(name);
 }

src/core/seat/input-manager.cpp

@@ -93,7 +93,7 @@ void wf::input_manager_t::configure_input_device(wlr_input_device *dev)
 {
     auto cursor  = wf::get_core().get_wlr_cursor();
     auto section =
-        wf::get_core().config_backend->get_input_device_section(dev);
+        wf::get_core().config_backend->get_input_device_section("input-device", dev);
 
     auto mapped_output = section->get_option("output")->get_value_str();
     if (mapped_output.empty())

src/core/seat/keyboard.cpp

@@ -121,14 +121,18 @@ void wf::keyboard_t::setup_listeners()
 wf::keyboard_t::keyboard_t(wlr_input_device *dev) :
     handle(wlr_keyboard_from_input_device(dev)), device(dev)
 {
-    model.load_option("input/xkb_model");
-    variant.load_option("input/xkb_variant");
-    layout.load_option("input/xkb_layout");
-    options.load_option("input/xkb_options");
-    rules.load_option("input/xkb_rules");
-
-    repeat_rate.load_option("input/kb_repeat_rate");
-    repeat_delay.load_option("input/kb_repeat_delay");
+    auto section =
+        wf::get_core().config_backend->get_input_device_section("input", dev);
+    auto section_name = section->get_name();
+
+    model.load_option(section_name + "/xkb_model");
+    variant.load_option(section_name + "/xkb_variant");
+    layout.load_option(section_name + "/xkb_layout");
+    options.load_option(section_name + "/xkb_options");
+    rules.load_option(section_name + "/xkb_rules");
+
+    repeat_rate.load_option(section_name + "/kb_repeat_rate");
+    repeat_delay.load_option(section_name + "/kb_repeat_delay");
 
     // When the configuration options change, mark them as dirty.
     // They are applied at the config-reloaded signal.