From b87fc6b140772ba3017de311c7063c259424264c Mon Sep 17 00:00:00 2001
From: Alex <kavsrf@gmail.com>
Date: Mon, 15 Aug 2016 17:11:31 +0200
Subject: First public release. Used by VeraCrypt 1.18.

---
 Library/CommonLib/EfiTouch.c | 47 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 Library/CommonLib/EfiTouch.c

(limited to 'Library/CommonLib/EfiTouch.c')

diff --git a/Library/CommonLib/EfiTouch.c b/Library/CommonLib/EfiTouch.c
new file mode 100644
index 0000000..9009f82
--- /dev/null
+++ b/Library/CommonLib/EfiTouch.c
@@ -0,0 +1,47 @@
+/** @file
+EFI touch/absolute pointer helpers
+
+Copyright (c) 2016. Disk Cryptography Services for EFI (DCS), Alex Kolotnikov
+Copyright (c) 2016. VeraCrypt, Mounir IDRASSI 
+
+This program and the accompanying materials are licensed and made available
+under the terms and conditions of the GNU Lesser General Public License, version 3.0 (LGPL-3.0).
+
+The full text of the license may be found at
+https://opensource.org/licenses/LGPL-3.0
+**/
+#include <Library/CommonLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/DevicePathLib.h>
+#include <Library/PrintLib.h>
+#include <Protocol/AbsolutePointer.h>
+
+EFI_HANDLE* gTouchHandles = NULL;
+UINTN       gTouchCount = 0;
+int         gTouchSimulate = 0;
+UINT32      gTouchSimulateStep = 1;
+
+EFI_ABSOLUTE_POINTER_PROTOCOL*	gTouchPointer = NULL;
+
+EFI_STATUS
+InitTouch() {
+	EFI_STATUS res;
+	res = EfiGetHandles(ByProtocol, &gEfiAbsolutePointerProtocolGuid, 0, &gTouchHandles, &gTouchCount);
+	if (gTouchCount > 0) {
+		TouchGetIO(gTouchHandles[gTouchCount - 1], &gTouchPointer);
+	}
+	return res;
+}
+
+
+EFI_STATUS
+TouchGetIO(
+	IN    EFI_HANDLE								Handle,
+	OUT   EFI_ABSOLUTE_POINTER_PROTOCOL**	io
+	) {
+	if (!io) {
+		return EFI_INVALID_PARAMETER;
+	}
+	return gBS->HandleProtocol(Handle, &gEfiAbsolutePointerProtocolGuid, (VOID**)io);
+}
+
-- 
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