[gnome-games/wip/aplazas/libmanette: 4/15] retro: Make RetroGamepad use libmanette

[Adrien Plazas <aplazas src gnome org>]

commit bf139ade946f020b66c811cc8020981de5ce4b2b
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Sun Nov 5 16:48:37 2017 +0100

    retro: Make RetroGamepad use libmanette

 src/retro/retro-gamepad.vala       |   34 ++++++++++++++++++++++++++++------
 src/retro/retro-input-manager.vala |   34 ++++++++++++++++++----------------
 2 files changed, 46 insertions(+), 22 deletions(-)
---
diff --git a/src/retro/retro-gamepad.vala b/src/retro/retro-gamepad.vala
index 402e10b..abd7b88 100644
--- a/src/retro/retro-gamepad.vala
+++ b/src/retro/retro-gamepad.vala
@@ -1,23 +1,23 @@
 // This file is part of GNOME Games. License: GPL-3.0+.
 
 private class Games.RetroGamepad: Object, Retro.Controller {
-       public Gamepad gamepad { get; construct; }
+       public Manette.Device device { get; construct; }
        public bool present_analog_sticks { get; construct; }
 
        private bool[] buttons;
        private int16[] axes;
 
-       public RetroGamepad (Gamepad gamepad, bool present_analog_sticks) {
-               Object (gamepad: gamepad, present_analog_sticks: present_analog_sticks);
+       public RetroGamepad (Manette.Device device, bool present_analog_sticks) {
+               Object (device: device, present_analog_sticks: present_analog_sticks);
        }
 
        construct {
                buttons = new bool[EventCode.KEY_MAX + 1];
                axes = new int16[EventCode.ABS_MAX + 1];
 
-               gamepad.button_press_event.connect ((event) => buttons[event.gamepad_button.button] = true);
-               gamepad.button_release_event.connect ((event) => buttons[event.gamepad_button.button] = 
false);
-               gamepad.axis_event.connect ((event) => axes[event.gamepad_axis.axis] = (int16) 
(event.gamepad_axis.value * int16.MAX));
+               device.button_press_event.connect (on_button_press_event);
+               device.button_release_event.connect (on_button_release_event);
+               device.absolute_axis_event.connect (on_absolute_axis_event);
        }
 
        public void poll () {}
@@ -116,4 +116,26 @@ private class Games.RetroGamepad: Object, Retro.Controller {
                        return 0;
                }
        }
+
+       private void on_button_press_event (Manette.Event event) {
+               uint16 button;
+
+               if (event.get_button (out button))
+                       buttons[button] = true;
+       }
+
+       private void on_button_release_event (Manette.Event event) {
+               uint16 button;
+
+               if (event.get_button (out button))
+                       buttons[button] = false;
+       }
+
+       private void on_absolute_axis_event (Manette.Event event) {
+               uint16 axis;
+               double value;
+
+               if (event.get_absolute (out axis, out value))
+                       axes[axis] = (int16) (value * int16.MAX);
+       }
 }
diff --git a/src/retro/retro-input-manager.vala b/src/retro/retro-input-manager.vala
index 74258be..dad6bfb 100644
--- a/src/retro/retro-input-manager.vala
+++ b/src/retro/retro-input-manager.vala
@@ -3,7 +3,7 @@
 private class Games.RetroInputManager : Object {
        private Retro.Core core;
        private Retro.Controller core_view_joypad;
-       private GamepadMonitor gamepad_monitor;
+       private Manette.Monitor monitor;
        private Retro.Controller?[] controllers;
        private int core_view_joypad_port;
        private bool present_analog_sticks;
@@ -22,35 +22,37 @@ private class Games.RetroInputManager : Object {
                core.set_default_controller (default_mouse);
                core.set_default_controller (default_pointer);
 
-               gamepad_monitor = GamepadMonitor.get_instance ();
-               gamepad_monitor.foreach_gamepad ((gamepad) => {
+               monitor = new Manette.Monitor ();
+               var iterator = monitor.iterate ();
+               Manette.Device device = null;
+               while (iterator.next (out device)) {
                        var port = controllers.length;
-                       var retro_gamepad = new RetroGamepad (gamepad, present_analog_sticks);
+                       var retro_gamepad = new RetroGamepad (device, present_analog_sticks);
                        controllers += retro_gamepad;
                        core.set_controller (port, retro_gamepad);
-                       gamepad.unplugged.connect (() => handle_gamepad_unplugged (port));
-               });
+                       device.disconnected.connect (() => on_device_disconnected (port));
+               };
 
                core_view_joypad_port = controllers.length;
                controllers += core_view_joypad;
                core.set_controller (core_view_joypad_port, core_view_joypad);
-               gamepad_monitor.gamepad_plugged.connect (handle_gamepad_plugged);
+               monitor.device_connected.connect (on_device_connected);
        }
 
-       private void handle_gamepad_plugged (Gamepad gamepad) {
-               // Plug this gamepad to the port where the CoreView's joypad was
-               // plugged as a last resort.
+       private void on_device_connected (Manette.Device device) {
+               // Plug this device to the port where the CoreView's joypad was
+               // connected as a last resort.
                var port = core_view_joypad_port;
-               var retro_gamepad = new RetroGamepad (gamepad, present_analog_sticks);
+               var retro_gamepad = new RetroGamepad (device, present_analog_sticks);
                controllers[port] = retro_gamepad;
                core.set_controller (port, retro_gamepad);
-               gamepad.unplugged.connect (() => handle_gamepad_unplugged (port));
+               device.disconnected.connect (() => on_device_disconnected (port));
 
-               // Assign the CoreView's joypad to another unplugged port if it
+               // Assign the CoreView's joypad to another disconnected port if it
                // exists and return.
                for (var i = core_view_joypad_port; i < controllers.length; i++) {
                        if (controllers[i] == null) {
-                               // Found an unplugged port and so assigning core_view_joypad to it
+                               // Found an disconnected port and so assigning core_view_joypad to it
                                core_view_joypad_port = i;
                                controllers[core_view_joypad_port] = core_view_joypad;
                                core.set_controller (core_view_joypad_port, core_view_joypad);
@@ -59,14 +61,14 @@ private class Games.RetroInputManager : Object {
                        }
                }
 
-               // Now it means that there is no unplugged port so append the
+               // Now it means that there is no disconnected port so append the
                // CoreView's joypad to ports.
                core_view_joypad_port = controllers.length;
                controllers += core_view_joypad;
                core.set_controller (core_view_joypad_port, core_view_joypad);
        }
 
-       private void handle_gamepad_unplugged (int port) {
+       private void on_device_disconnected (int port) {
                if (core_view_joypad_port > port) {
                        // Remove the controller and shift the CoreView's joypad to
                        // "lesser" port.