133 lines
3.4 KiB
C
133 lines
3.4 KiB
C
/*
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* $XFree86: xc/programs/Xserver/hw/kdrive/linux/ts.c,v 1.4 2001/06/29 14:00:41 keithp Exp $
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*
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* Derived from ps2.c by Jim Gettys
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*
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* Copyright © 1999 Keith Packard
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* Copyright © 2000 Compaq Computer Corporation
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Keith Packard or Compaq not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard and Compaq makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD AND COMPAQ DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
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* IN NO EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#define NEED_EVENTS
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#include "X.h"
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#include "Xproto.h"
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#include "inputstr.h"
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#include "scrnintstr.h"
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#include "kdrive.h"
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#include "Xpoll.h"
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#include <sys/ioctl.h>
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#include <linux/h3600_ts.h> /* touch screen events */
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static long lastx = 0, lasty = 0;
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int TsScreen;
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extern int TsFbdev;
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void
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TsRead (int tsPort, void *closure)
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{
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TS_EVENT event;
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long buf[3];
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int n;
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long pressure;
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long x, y;
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unsigned long flags;
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unsigned long buttons;
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n = Ps2ReadBytes (tsPort, (char *) &event,
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sizeof (event), sizeof (event));
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if (n == sizeof (event))
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{
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if (event.pressure)
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{
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/*
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* HACK ATTACK. (static global variables used !)
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* Here we test for the touch screen driver actually being on the
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* touch screen, if it is we send absolute coordinates. If not,
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* then we send delta's so that we can track the entire vga screen.
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*/
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if (TsScreen == TsFbdev) {
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flags = KD_BUTTON_1;
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x = event.x;
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y = event.y;
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} else {
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flags = /* KD_BUTTON_1 |*/ KD_MOUSE_DELTA;
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if ((lastx == 0) || (lasty == 0)) {
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x = 0;
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y = 0;
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} else {
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x = event.x - lastx;
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y = event.y - lasty;
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}
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lastx = event.x;
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lasty = event.y;
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}
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} else {
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flags = KD_MOUSE_DELTA;
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x = 0;
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y = 0;
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lastx = 0;
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lasty = 0;
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}
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KdEnqueueMouseEvent (flags, x, y);
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}
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}
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char *TsNames[] = {
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"/dev/ts",
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"/dev/h3600_ts" /* temporary name; note this code can try
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to open more than one device */
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};
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#define NUM_TS_NAMES (sizeof (TsNames) / sizeof (TsNames[0]))
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int TsInputType;
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int
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TsInit (void)
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{
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int i;
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int TsPort;
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if (!TsInputType)
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TsInputType = KdAllocInputType ();
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for (i = 0; i < NUM_TS_NAMES; i++)
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{
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TsPort = open (TsNames[i], 0);
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if (TsPort >= 0)
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{
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if (KdRegisterFd (TsInputType, TsPort, TsRead, 0))
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return 1;
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}
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}
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perror("Touch screen not found.\n");
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exit (1);
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}
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void
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TsFini (void)
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{
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KdUnregisterFds (TsInputType, TRUE);
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}
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KdMouseFuncs TsFuncs = {
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TsInit,
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TsFini
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};
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