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tdebase/kcontrol/joystick/joywidget.cpp

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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. *
***************************************************************************/
#include "joywidget.h"
#include "joydevice.h"
#include "poswidget.h"
#include "caldialog.h"
#include <qhbox.h>
#include <qvbox.h>
#include <qtable.h>
#include <qlabel.h>
#include <qcombobox.h>
#include <qlistbox.h>
#include <qcheckbox.h>
#include <qtimer.h>
#include <qfontmetrics.h>
#include <qpushbutton.h>
#include <klocale.h>
#include <kdialog.h>
#include <kmessagebox.h>
#include <kiconloader.h>
//--------------------------------------------------------------
static QString PRESSED = I18N_NOOP("PRESSED");
//--------------------------------------------------------------
JoyWidget::JoyWidget(QWidget *parent, const char *name)
: QWidget(parent, name), idle(0), joydev(0)
{
QVBox *mainVbox = new QVBox(parent);
mainVbox->setSpacing(KDialog::spacingHint());
// create area to show an icon + message if no joystick was detected
{
messageBox = new QHBox(mainVbox);
messageBox->setSpacing(KDialog::spacingHint());
QLabel *icon = new QLabel(messageBox);
icon->setPixmap(KGlobal::iconLoader()->loadIcon("messagebox_warning", KIcon::NoGroup,
KIcon::SizeMedium, KIcon::DefaultState, 0, true));
icon->setFixedSize(icon->sizeHint());
message = new QLabel(messageBox);
messageBox->hide();
}
QHBox *devHbox = new QHBox(mainVbox);
new QLabel(i18n("Device:"), devHbox);
device = new QComboBox(true, devHbox);
device->setInsertionPolicy(QComboBox::NoInsertion);
connect(device, SIGNAL(activated(const QString &)), this, SLOT(deviceChanged(const QString &)));
devHbox->setStretchFactor(device, 3);
QHBox *hbox = new QHBox(mainVbox);
hbox->setSpacing(KDialog::spacingHint());
QVBox *vboxLeft = new QVBox(hbox);
vboxLeft->setSpacing(KDialog::spacingHint());
new QLabel(i18n("Position:"), vboxLeft);
xyPos = new PosWidget(vboxLeft);
trace = new QCheckBox(i18n("Show trace"), mainVbox);
connect(trace, SIGNAL(toggled(bool)), this, SLOT(traceChanged(bool)));
QVBox *vboxMid = new QVBox(hbox);
vboxMid->setSpacing(KDialog::spacingHint());
QVBox *vboxRight = new QVBox(hbox);
vboxRight->setSpacing(KDialog::spacingHint());
// calculate the column width we need
QFontMetrics fm(font());
int colWidth = QMAX(fm.width(PRESSED), fm.width("-32767")) + 10; // -32767 largest string
new QLabel(i18n("Buttons:"), vboxMid);
buttonTbl = new QTable(0, 1, vboxMid);
buttonTbl->setReadOnly(true);
buttonTbl->horizontalHeader()->setLabel(0, i18n("State"));
buttonTbl->horizontalHeader()->setClickEnabled(false);
buttonTbl->horizontalHeader()->setResizeEnabled(false);
buttonTbl->verticalHeader()->setClickEnabled(false);
buttonTbl->verticalHeader()->setResizeEnabled(false);
buttonTbl->setColumnWidth(0, colWidth);
new QLabel(i18n("Axes:"), vboxRight);
axesTbl = new QTable(0, 1, vboxRight);
axesTbl->setReadOnly(true);
axesTbl->horizontalHeader()->setLabel(0, i18n("Value"));
axesTbl->horizontalHeader()->setClickEnabled(false);
axesTbl->horizontalHeader()->setResizeEnabled(false);
axesTbl->verticalHeader()->setClickEnabled(false);
axesTbl->verticalHeader()->setResizeEnabled(false);
axesTbl->setColumnWidth(0, colWidth);
// calibrate button
calibrate = new QPushButton(i18n("Calibrate"), mainVbox);
connect(calibrate, SIGNAL(clicked()), this, SLOT(calibrateDevice()));
calibrate->setEnabled(false);
// set up a timer for idle processing of joystick events
idle = new QTimer(this);
connect(idle, SIGNAL(timeout()), this, SLOT(checkDevice()));
// check which devicefiles we have
init();
vboxLeft->adjustSize();
vboxMid->adjustSize();
vboxRight->adjustSize();
hbox->adjustSize();
mainVbox->adjustSize();
setMinimumSize(mainVbox->size());
}
//--------------------------------------------------------------
JoyWidget::~JoyWidget()
{
delete joydev;
}
//--------------------------------------------------------------
void JoyWidget::init()
{
// check which devicefiles we have
int i;
bool first = true;
char dev[30];
device->clear();
buttonTbl->setNumRows(0);
axesTbl->setNumRows(0);
for (i = 0; i < 5; i++) // check the first 5 devices
{
sprintf(dev, "/dev/js%d", i); // first look in /dev
JoyDevice *joy = new JoyDevice(dev);
if ( joy->open() != JoyDevice::SUCCESS )
{
delete joy;
sprintf(dev, "/dev/input/js%d", i); // then look in /dev/input
joy = new JoyDevice(dev);
if ( joy->open() != JoyDevice::SUCCESS )
{
delete joy;
continue; // try next number
}
}
// we found one
device->insertItem(QString("%1 (%2)").arg(joy->text()).arg(joy->device()));
// display values for first device
if ( first )
{
showDeviceProps(joy); // this sets the joy object into this->joydev
first = false;
}
else
delete joy;
}
/* KDE 4: Remove this check(and i18n) when all KCM wrappers properly test modules */
if ( device->count() == 0 )
{
messageBox->show();
message->setText(QString("<qt><b>%1</b></qt>").arg(
i18n("No joystick device automatically found on this computer.<br>"
"Checks were done in /dev/js[0-4] and /dev/input/js[0-4]<br>"
"If you know that there is one attached, please enter the correct device file.")));
}
}
//--------------------------------------------------------------
void JoyWidget::traceChanged(bool state)
{
xyPos->showTrace(state);
}
//--------------------------------------------------------------
void JoyWidget::restoreCurrDev()
{
if ( !joydev ) // no device open
{
device->setCurrentText("");
calibrate->setEnabled(false);
}
else
{
// try to find the current open device in the combobox list
QListBoxItem *item;
item = device->listBox()->findItem(joydev->device(), Qt::Contains);
if ( !item ) // the current open device is one the user entered (not in the list)
device->setCurrentText(joydev->device());
else
device->setCurrentText(item->text());
}
}
//--------------------------------------------------------------
void JoyWidget::deviceChanged(const QString &dev)
{
// find "/dev" in given string
int start, stop;
QString devName;
if ( (start = dev.find("/dev")) == -1 )
{
KMessageBox::sorry(this,
i18n("The given device name is invalid (does not contain /dev).\n"
"Please select a device from the list or\n"
"enter a device file, like /dev/js0."), i18n("Unknown Device"));
restoreCurrDev();
return;
}
if ( (stop = dev.find(")", start)) != -1 ) // seems to be text selected from our list
devName = dev.mid(start, stop - start);
else
devName = dev.mid(start);
if ( joydev && (devName == joydev->device()) ) return; // user selected the current device; ignore it
JoyDevice *joy = new JoyDevice(devName);
JoyDevice::ErrorCode ret = joy->open();
if ( ret != JoyDevice::SUCCESS )
{
KMessageBox::error(this, joy->errText(ret), i18n("Device Error"));
delete joy;
restoreCurrDev();
return;
}
showDeviceProps(joy);
}
//--------------------------------------------------------------
void JoyWidget::showDeviceProps(JoyDevice *joy)
{
joydev = joy;
buttonTbl->setNumRows(joydev->numButtons());
axesTbl->setNumRows(joydev->numAxes());
if ( joydev->numAxes() >= 2 )
{
axesTbl->verticalHeader()->setLabel(0, "1(x)");
axesTbl->verticalHeader()->setLabel(1, "2(y)");
}
calibrate->setEnabled(true);
idle->start(0);
// make both tables use the same space for header; this looks nicer
buttonTbl->setLeftMargin(QMAX(buttonTbl->verticalHeader()->width(),
axesTbl->verticalHeader()->width()));
axesTbl->setLeftMargin(buttonTbl->verticalHeader()->width());
}
//--------------------------------------------------------------
void JoyWidget::checkDevice()
{
if ( !joydev ) return; // no open device yet
JoyDevice::EventType type;
int number, value;
if ( !joydev->getEvent(type, number, value) )
return;
if ( type == JoyDevice::BUTTON )
{
if ( value == 0 ) // button release
buttonTbl->setText(number, 0, "-");
else
buttonTbl->setText(number, 0, PRESSED);
}
if ( type == JoyDevice::AXIS )
{
if ( number == 0 ) // x-axis
xyPos->changeX(value);
if ( number == 1 ) // y-axis
xyPos->changeY(value);
axesTbl->setText(number, 0, QString("%1").arg(int(value)));
}
}
//--------------------------------------------------------------
void JoyWidget::calibrateDevice()
{
if ( !joydev ) return; // just to be save
JoyDevice::ErrorCode ret = joydev->initCalibration();
if ( ret != JoyDevice::SUCCESS )
{
KMessageBox::error(this, joydev->errText(ret), i18n("Communication Error"));
return;
}
if ( KMessageBox::messageBox(this, KMessageBox::Information,
i18n("<qt>Calibration is about to check the precision.<br><br>"
"<b>Please move all axes to their center position and then "
"do not touch the joystick anymore.</b><br><br>"
"Click OK to start the calibration.</qt>"),
i18n("Calibration"),
KStdGuiItem::ok(), KStdGuiItem::cancel()) != KMessageBox::Ok )
return;
idle->stop(); // stop the joystick event getting; this must be done inside the calibrate dialog
CalDialog dlg(this, joydev);
dlg.calibrate();
// user cancelled somewhere during calibration, therefore the device is in a bad state
if ( dlg.result() == QDialog::Rejected )
joydev->restoreCorr();
idle->start(0); // continue with event getting
}
//--------------------------------------------------------------
void JoyWidget::resetCalibration()
{
if ( !joydev ) return; // just to be save
JoyDevice::ErrorCode ret = joydev->restoreCorr();
if ( ret != JoyDevice::SUCCESS )
{
KMessageBox::error(this, joydev->errText(ret), i18n("Communication Error"));
}
else
{
KMessageBox::information(this,
i18n("Restored all calibration values for joystick device %1.").arg(joydev->device()),
i18n("Calibration Success"));
}
}
//--------------------------------------------------------------
#include "joywidget.moc"