From 447783f8d0108feedf3a5801c1f61853d046a733 Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Thu, 13 Jan 2011 22:41:25 +0200
Subject: [PATCH] some quick input code for PC build

---
 Makefile              |   4 ++
 frontend/plugin_lib.c |   5 ++
 frontend/xkb.c        | 124 ++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 133 insertions(+)
 create mode 100644 frontend/xkb.c

diff --git a/Makefile b/Makefile
index 644639b7..58961582 100644
--- a/Makefile
+++ b/Makefile
@@ -81,6 +81,10 @@ OBJS += frontend/plat_omap.o
 else
 OBJS += frontend/plat_dummy.o
 endif
+ifdef X11
+frontend/%.o: CFLAGS += -DX11
+OBJS += frontend/xkb.o
+endif
 ifdef PCNT
 CFLAGS += -DPCNT
 endif
diff --git a/frontend/plugin_lib.c b/frontend/plugin_lib.c
index a458f0e7..93640c35 100644
--- a/frontend/plugin_lib.c
+++ b/frontend/plugin_lib.c
@@ -121,6 +121,11 @@ static void update_input(void)
 	if (actions[IN_BINDTYPE_EMU] & PEV_MENU)
 		stop = 1;
 	keystate = actions[IN_BINDTYPE_PLAYER12];
+
+#ifdef X11
+	extern void x11_update_keys(void);
+	x11_update_keys();
+#endif
 }
 
 /* called on every vsync */
diff --git a/frontend/xkb.c b/frontend/xkb.c
new file mode 100644
index 00000000..874531c3
--- /dev/null
+++ b/frontend/xkb.c
@@ -0,0 +1,124 @@
+/*
+ * Copyright (c) 2009, Wei Mingzhi <whistler@openoffice.org>.
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses>.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/keysym.h>
+#include <X11/XKBlib.h>
+
+#include "main.h"
+#include "plugin_lib.h"
+
+static const struct {
+	uint16_t xkey, psxkey;
+} keymap[] = {
+	{ XK_Left,	DKEY_LEFT },
+	{ XK_Right,	DKEY_RIGHT },
+	{ XK_Up,	DKEY_UP },
+	{ XK_Down,	DKEY_DOWN },
+	{ XK_z,		DKEY_CROSS },
+	{ XK_s,		DKEY_SQUARE },
+	{ XK_x,		DKEY_CIRCLE },
+	{ XK_d,		DKEY_TRIANGLE },
+	{ XK_w,		DKEY_L1 },
+	{ XK_r,		DKEY_R1 },
+	{ XK_e,		DKEY_L2 },
+	{ XK_t,		DKEY_R2 },
+	{ XK_c,		DKEY_SELECT },
+	{ XK_v,		DKEY_START },
+};
+
+static Atom wmprotocols, wmdelwindow;
+static int initialized;
+
+static void InitKeyboard(void) {
+	Display *disp = (Display *)gpuDisp;
+	if (disp == NULL) {
+		fprintf(stderr, "xkb: null display\n");
+		exit(1);
+	}
+
+	wmprotocols = XInternAtom(disp, "WM_PROTOCOLS", 0);
+	wmdelwindow = XInternAtom(disp, "WM_DELETE_WINDOW", 0);
+
+	XkbSetDetectableAutoRepeat(disp, 1, NULL);
+}
+
+static void DestroyKeyboard(void) {
+	Display *disp = (Display *)gpuDisp;
+	if (disp)
+		XkbSetDetectableAutoRepeat(disp, 0, NULL);
+}
+
+void x11_update_keys(void) {
+	uint8_t					i;
+	XEvent					evt;
+	XClientMessageEvent		*xce;
+	uint16_t				Key;
+	int psxkey, leave = 0;
+	Display *disp = (Display *)gpuDisp;
+
+	if (initialized < 2000) {
+		initialized++;
+		InitKeyboard();
+	}
+
+	if (!disp)
+		return;
+
+	while (XPending(disp)) {
+		XNextEvent(disp, &evt);
+		switch (evt.type) {
+			case KeyPress:
+			case KeyRelease:
+				Key = XLookupKeysym((XKeyEvent *)&evt, 0);
+				//printf("%s %x\n", evt.type == KeyPress ? "press" : "rel  ", Key);
+				psxkey = -1;
+				for (i = 0; i < ARRAY_SIZE(keymap); i++) {
+					if (keymap[i].xkey == Key) {
+						psxkey = keymap[i].psxkey;
+						break;
+					}
+				}
+
+				if (psxkey >= 0) {
+					if (evt.type == KeyPress)
+						keystate |= 1 << psxkey;
+					else
+						keystate &= ~(1 << psxkey);
+				}
+				if (evt.type == KeyPress && Key == XK_Escape)
+					leave = 1;
+				break;
+
+			case ClientMessage:
+				xce = (XClientMessageEvent *)&evt;
+				if (xce->message_type == wmprotocols && (Atom)xce->data.l[0] == wmdelwindow)
+					leave = 1;
+				break;
+		}
+	}
+
+	if (leave) {
+		DestroyKeyboard();
+		exit(1);
+	}
+}
-- 
2.39.5