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+/***************************************************************************
+ * Copyright (C) 2003 by Martin Koller *
+ * m.koller@surfeu.at *
+ * This file is part of the KDE Control Center Module for Joysticks *
+ * *
+ * 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, write to the *
+ * Free Software Foundation, Inc., *
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
+ ***************************************************************************/
+#ifndef _JOYDEVICE_H_
+#define _JOYDEVICE_H_
+
+#include <qstring.h>
+
+#include <sys/types.h>
+#undef __STRICT_ANSI__
+#include <linux/joystick.h>
+#define __STRICT_ANSI__
+
+// helper class which holds all current values, file descriptor, etc. for
+// one device
+class JoyDevice
+{
+ public:
+ enum ErrorCode
+ {
+ SUCCESS,
+ OPEN_FAILED,
+ NO_JOYSTICK,
+ WRONG_VERSION,
+ ERR_GET_VERSION,
+ ERR_GET_BUTTONS,
+ ERR_GET_AXES,
+ ERR_GET_CORR,
+ ERR_RESTORE_CORR,
+ ERR_INIT_CAL,
+ ERR_APPLY_CAL
+ };
+
+ enum EventType
+ {
+ BUTTON,
+ AXIS
+ };
+
+ // devicefile to use, e.g. "/dev/js0"
+ JoyDevice(const QString &devicefile);
+ ~JoyDevice();
+
+ // returns one of the error-codes from above
+ ErrorCode open();
+
+ // return descriptive error text for given error code
+ QString errText(ErrorCode code) const;
+
+ int fd() const { return joyFd; }
+ void close();
+ ErrorCode restoreCorr();
+
+ // return devicefilename from constructor
+ const QString &device() const { return devName; }
+
+ // descriptive text for this device read from the driver
+ QString text() const { return descr; }
+
+ int numButtons() const { return buttons; }
+ int numAxes() const { return axes; }
+ int axisMin(int axis) const;
+ int axisMax(int axis) const;
+
+ // read next event from device; returns true if there was an event during the short timeout
+ bool getEvent(JoyDevice::EventType &type, int &number, int &value);
+
+ // methods for calibration
+ ErrorCode initCalibration(); // must be called first
+ void calcPrecision();
+
+ void resetMinMax(int axis, int value = 0);
+
+ // calculate correction values
+ // min[2], center[2], max[2], index 0 == minimum, index 1 == maximum
+ void calcCorrection(int axis, int *min, int *center, int *max);
+ ErrorCode applyCalibration();
+
+ private:
+ QString devName; // device filename
+ QString descr; // descriptive text
+ int joyFd;
+
+ int buttons;
+ int axes;
+ int *amin; // axes min values
+ int *amax; // axes max values
+
+ struct js_corr *corr; // calibration values during the calib. steps
+ struct js_corr *origCorr; // original calibration correction values
+};
+
+#endif