fixed segfault when no keymap is installed

1 files changed, 2 insertions, 0 deletions

diff --git a/inputmethods/multikey/keyboard.cpp b/inputmethods/multikey/keyboard.cpp
index 949164a..d5a7afd 100644
--- a/inputmethods/multikey/keyboard.cpp
+++ b/inputmethods/multikey/keyboard.cpp
@@ -12,512 +12,514 @@
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ** See http://www.trolltech.com/gpl/ for GPL licensing information.
 **
 ** Contact info@trolltech.com if any conditions of this licensing are
 ** not clear to you.
 **
 **********************************************************************/
 
 #include "keyboard.h"
 #include "configdlg.h"
 
 #include <qpe/global.h>
 #include <qpe/qcopenvelope_qws.h>
 
 #include <qwindowsystem_qws.h>
 #include <qpainter.h>
 #include <qfontmetrics.h>
 #include <qtimer.h>
 #include <qpe/qpeapplication.h>
 #include <qpe/config.h>
 #include <ctype.h>
 #include <qfile.h>
 #include <qtextstream.h>
 #include <qstringlist.h>
 #include <iostream.h>
 
 #include <sys/utsname.h>
 
 
 /* Keyboard::Keyboard {{{1 */
 Keyboard::Keyboard(QWidget* parent, const char* _name, WFlags f) :
     QFrame(parent, _name, f),  shift(0), lock(0), ctrl(0),
     alt(0), useLargeKeys(TRUE), usePicks(0), useRepeat(0), pressedKeyRow(-1), pressedKeyCol(-1),
     unicode(-1), qkeycode(0), modifiers(0), schar(0), mchar(0), echar(0),
     configdlg(0)
 
 {
 
     // get the default font
     Config *config = new Config( "qpe" );
     config->setGroup( "Appearance" );
     QString familyStr = config->readEntry( "FontFamily", "fixed" );
     delete config;
 
     config = new Config("multikey");
     config->setGroup ("general");
     usePicks = config->readBoolEntry ("usePickboard", "0"); // default closed
     useRepeat = config->readBoolEntry ("useRepeat", "1");
     delete config;
 
 
     setFont( QFont( familyStr, 10 ) );
 
     picks = new KeyboardPicks( this );
     picks->setFont( QFont( familyStr, 10 ) );
     picks->initialise();
     if (usePicks) {
 
         QObject::connect( picks, SIGNAL(key(ushort,ushort,ushort,bool,bool) ),
             this, SIGNAL(key(ushort,ushort,ushort,bool,bool)) );
 
     } else picks->hide();
 
     loadKeyboardColors();
 
     keys = new Keys();
 
     repeatTimer = new QTimer( this );
     connect( repeatTimer, SIGNAL(timeout()), this, SLOT(repeat()) );
 
 }
 
 Keyboard::~Keyboard() {
 
     if ( configdlg ) { 
         delete (ConfigDlg *) configdlg; 
         configdlg = 0;
     }
 
 }
 
 /* Keyboard::resizeEvent {{{1 */
 void Keyboard::resizeEvent(QResizeEvent*)
 {
     int ph = picks->sizeHint().height();
     picks->setGeometry( 0, 0, width(), ph );
     keyHeight = (height()-(usePicks ? ph : 0))/5;
 
     int nk; // number of keys?
     if ( useLargeKeys ) {
 	nk = 15;
     } else {
 	nk = 19;
     }
     defaultKeyWidth = (width()/nk)/2;
     xoffs = (width()-defaultKeyWidth*nk)/2; // empty key spaces?
 
 }
 
 /* KeyboardPicks::initialize {{{1 */
 void KeyboardPicks::initialise()
 {
     setSizePolicy(QSizePolicy(QSizePolicy::Expanding,QSizePolicy::Fixed));
     mode = 0;
     dc = new KeyboardConfig(this);
     configs.append(dc);
 }
 
 /* KeyboardPicks::sizeHint {{{1 */
 QSize KeyboardPicks::sizeHint() const
 {
     return QSize(240,fontMetrics().lineSpacing());
 }
 
 
 /* KeyboardConfig::generateText {{{1 */
 void  KeyboardConfig::generateText(const QString &s)
 {
 #if defined(Q_WS_QWS) || defined(_WS_QWS_)
     for (int i=0; i<(int)backspaces; i++) {
 	parent->emitKey( 0, Qt::Key_Backspace, 0, true, false );
 	parent->emitKey( 0, Qt::Key_Backspace, 0, false, false );
     }
     for (int i=0; i<(int)s.length(); i++) {
 	parent->emitKey( s[i].unicode(), 0, 0, true, false );
 	parent->emitKey( s[i].unicode(), 0, 0, false, false );
     }
     parent->emitKey( 0, Qt::Key_Space, 0, true, false );
     parent->emitKey( 0, Qt::Key_Space, 0, false, false );
     backspaces = 0;
 #endif
 }
 
 
 
 
 /* Keyboard::paintEvent {{{1 */
 void Keyboard::paintEvent(QPaintEvent* e)
 {
     QPainter painter(this);
     painter.setClipRect(e->rect());
     drawKeyboard( painter );
     picks->dc->draw( &painter );
 }
 
 
 /* Keyboard::drawKeyboard {{{1 */
 
 void Keyboard::drawKeyboard(QPainter &p, int row, int col)
 {
 
 
     if (row != -1 && col != -1) { //just redraw one key
 
         int x = 0;
         for (int i = 0; i < col; i++) {
 
             x += keys->width(row, i) * defaultKeyWidth;
         }
         int y = (row - 1) * keyHeight + (usePicks ? picks->height() : 0);
 
         int keyWidth = keys->width(row, col);
 
         p.fillRect(x + 1, y + 1, 
                    keyWidth * defaultKeyWidth - 1, keyHeight - 1, 
                    pressed || keys->pressed(row, col) ? keycolor_pressed : keycolor);
 
         QPixmap *pix = keys->pix(row,col);
 
         ushort c = keys->uni(row, col);
 
         p.setPen(textcolor);
         if (!pix)
             p.drawText(x, y, 
                defaultKeyWidth * keyWidth, keyHeight,
                AlignCenter, ((shift || lock) && keys->shift(c)) ? (QChar)keys->shift(c) : (QChar)c);
         else
             // center the image in the middle of the key
             p.drawPixmap( x + (defaultKeyWidth * keyWidth - pix->width())/2, 
                           y + (keyHeight - pix->height())/2 + 1, 
                           *pix );
 
         // this fixes the problem that the very right end of the board's vertical line
         // gets painted over, because it's one pixel shorter than all other keys
         p.setPen(keycolor_lines);
         p.drawLine(width() - 1, 0, width() - 1, height());
 
     } else {
 
 
     p.fillRect(0, 0, width(), height(), keycolor);
 
     for (row = 1; row <= 5; row++) {
 
         int x = 0;
         int y = (row - 1) * keyHeight + (usePicks ? picks->height() : 0);
 
         p.setPen(keycolor_lines);
         p.drawLine(x, y, x + width(), y);
 
         for (int col = 0; col < keys->numKeys(row); col++) {
 
             QPixmap *pix = keys->pix(row, col);
             int keyWidth = keys->width(row, col);
 
 
             int keyWidthPix = defaultKeyWidth * keyWidth;
 
             if (keys->pressed(row, col)) 
                 p.fillRect(x+1, y+1, keyWidthPix - 1, 
                            keyHeight - 1, keycolor_pressed);
 
             ushort c = keys->uni(row, col);
 
             if (!pix) {
                 p.setPen(textcolor);
                 p.drawText(x, y, 
                    keyWidthPix, keyHeight,
                    AlignCenter, ((shift || lock) && keys->shift(c)) ? (QChar)keys->shift(c) : (QChar)c);
             }
             else {
                 // center the image in the middle of the key
                 p.drawPixmap( x + (keyWidthPix - pix->width())/2, 
                               y + (keyHeight - pix->height())/2 + 1, 
                               QPixmap(*pix) );
             }
 
             p.setPen(keycolor_lines);
             p.drawLine(x, y, x, y + keyHeight);
 
             x += keyWidthPix;
         }
 
 
     }
     p.drawLine(0, height() - 1, width(), height() - 1);
     p.drawLine(width() - 1, 0, width() - 1, height());
     }
 
 }
 
 
 /* Keyboard::mousePressEvent {{{1 */
 void Keyboard::mousePressEvent(QMouseEvent *e)
 {
     int row = (e->y() - (usePicks ? picks->height() : 0)) / keyHeight + 1;
     if (row > 5) row = 5;
 
     // figure out the column
     int col = 0; 
     for (int w = 0; e->x() >= w; col++)
         if (col < keys->numKeys(row)) // it segfaults if it trys to read past numKeys
             w += keys->width(row,col) * defaultKeyWidth;
         else break;
 
+    if (col <= 0) return;
+
     col --; // rewind one...
 
     qkeycode = keys->qcode(row, col);
     unicode = keys->uni(row, col);
 
     // might need to repaint if two or more of the same keys.
     // should be faster if just paint one key even though multiple keys exist.
     bool need_repaint = FALSE; 
 
     if (unicode == 0) { // either Qt char, or nothing
 
         if (qkeycode == Qt::Key_F1) { // toggle the pickboard
 
             if ( configdlg ) { 
                 delete (ConfigDlg *) configdlg; 
                 configdlg = 0;
             }
             else {
                configdlg = new ConfigDlg ();
                connect(configdlg, SIGNAL(setMapToDefault()), 
                        this, SLOT(setMapToDefault()));
                connect(configdlg, SIGNAL(setMapToFile(QString)), 
                        this, SLOT(setMapToFile(QString)));
                connect(configdlg, SIGNAL(pickboardToggled(bool)), 
                        this, SLOT(togglePickboard(bool)));
                connect(configdlg, SIGNAL(repeatToggled(bool)),
                        this, SLOT(toggleRepeat(bool)));
                connect(configdlg, SIGNAL(reloadKeyboard()),
                        this, SLOT(reloadKeyboard()));
                configdlg->showMaximized();
                configdlg->show();
                configdlg->raise();
             }
 
         } else if (qkeycode == Qt::Key_Control) {
             ctrl = keys->pressedPtr(row, col);
             need_repaint = TRUE;
             *ctrl = !keys->pressed(row, col);
 
         } else if (qkeycode == Qt::Key_Alt) {
             alt = keys->pressedPtr(row, col);
             need_repaint = TRUE;
             *alt = !keys->pressed(row, col);
 
         } else if (qkeycode == Qt::Key_Shift) {
             need_repaint = TRUE;
 
             if (shift) {
                 *shift = 0;
                 shift = 0;
             }
             else {
                 shift = keys->pressedPtr(row, col);
                 *shift = 1;
                 if (lock) {
                     *lock = 0;
                     lock = 0;
                 }
             }
 
         } else if (qkeycode == Qt::Key_CapsLock) {
             need_repaint = TRUE;
 
             if (lock) {
                 *lock = 0;
                 lock = 0;
             }
             else {
                 lock = keys->pressedPtr(row, col);;
                 *lock = 1;
                 if (shift) {
                     *shift = 0;
                     shift = 0;
                 }
             }
 
         }
 
     }
     else { // normal char
         if ((shift || lock) && keys->shift(unicode)) {
             unicode = keys->shift(unicode);
         }
     }
 
     // korean parsing
     if (keys->lang == "ko") {
 
         unicode = parseKoreanInput(unicode);
     }
 
     modifiers = (ctrl ? Qt::ControlButton : 0) | (alt ? Qt::AltButton : 0);
 
     if ('A' <= unicode && unicode <= 'z' && modifiers) {
 
         qkeycode = QChar(unicode).upper();
         unicode = qkeycode - '@';
     }
 
     QWSServer::sendKeyEvent(unicode, qkeycode, modifiers, true, false); 
 
     // pickboard stuff
     if (usePicks) {
 
         KeyboardConfig *dc = picks->dc;
     
         if (dc) {
             if (qkeycode == Qt::Key_Backspace) {
                 dc->input.remove(dc->input.last()); // remove last input
                 dc->decBackspaces();
             } else if ( qkeycode == Qt::Key_Return || QChar(unicode).isPunct() || QChar(unicode).isSpace() || unicode == 0) {
                 dc->input.clear();
                 dc->resetBackspaces();
             } else {
                 dc->add(QString(QChar(unicode)));
                 dc->incBackspaces();
             }
         }
         picks->repaint();
     }
 
 
     // painting
     pressed = TRUE;
 
     pressedKeyRow = row;
     pressedKeyCol = col;
 
     if (need_repaint) repaint(FALSE);
     else { // just paint the one key pressed
 
 
 
         QPainter p(this);
         drawKeyboard(p, row, col);
 
     }
 
     if (useRepeat) repeatTimer->start( 800 );
     //pressTid = startTimer(80);
 
 }
 
 
 /* Keyboard::mouseReleaseEvent {{{1 */
 void Keyboard::mouseReleaseEvent(QMouseEvent*)
 {
     pressed = FALSE;
     //if ( pressTid == 0 )
 #if defined(Q_WS_QWS) || defined(_WS_QWS_)
     if ( unicode != -1 ) {
 	emit key( unicode, qkeycode, modifiers, false, false );
 	repeatTimer->stop();
     }
 #endif
     if (shift && unicode != 0) {
 
 
         *shift = 0; // unpress shift key
         shift = 0;  // reset the shift pointer
         repaint(FALSE);
 
     }
     else 
 
     clearHighlight();
 }
 
 /* Keyboard::timerEvent {{{1 */
 
 /* dont know what this does, but i think it is here so that if your screen
  * sticks (like on an ipaq) then it will stop repeating if you click another
  * key... but who knows what anything does in this thing anyway?
 
  void Keyboard::timerEvent(QTimerEvent* e)
 {
     if ( e->timerId() == pressTid ) {
 	killTimer(pressTid);
 	pressTid = 0;
 	if ( !pressed )
         cout << "calling clearHighlight from timerEvent\n";
 	    //clearHighlight();
     }
 }
 */
 
 void Keyboard::repeat()
 {
 
   repeatTimer->start( 200 );
   emit key( unicode, qkeycode, modifiers, true, true );
 }
 
 void Keyboard::clearHighlight()
 {
     if ( pressedKeyRow >= 0 && pressedKeyCol >= 0) {
 	    int tmpRow = pressedKeyRow;
         int tmpCol = pressedKeyCol;
 
 	    pressedKeyRow = -1;
 	    pressedKeyCol = -1;
 
 	    QPainter p(this);
 	    drawKeyboard(p, tmpRow, tmpCol);
     }
 }
 
 
 /* Keyboard::sizeHint {{{1 */
 QSize Keyboard::sizeHint() const
 {
     QFontMetrics fm=fontMetrics();
     int keyHeight = fm.lineSpacing() + 2;
 
     return QSize( 240, keyHeight * 5 + (usePicks ? picks->sizeHint().height() : 0) + 1);
 }
 
 
 void Keyboard::resetState()
 {
     schar = mchar = echar = 0;
     picks->resetState();
 }
 
 /* Keyboard::togglePickboard {{{1 */
 void Keyboard::togglePickboard(bool on_off)
 {
     usePicks = on_off;
     if (usePicks) {
         picks->show();
         //move(x(), y() - picks->height()); // not required anymore because QCopChannel::send
         //adjustSize();
         QObject::connect( picks, SIGNAL(key(ushort,ushort,ushort,bool,bool) ),
             this, SIGNAL(key(ushort,ushort,ushort,bool,bool)) );
     } else {
 
         picks->hide();
         picks->resetState();
         //move(x(), y() + picks->height());
         //adjustSize();
         QObject::disconnect( picks, SIGNAL(key(ushort,ushort,ushort,bool,bool) ),
             this, SIGNAL(key(ushort,ushort,ushort,bool,bool)) );
 
     }
     /*
      * this closes && opens the input method
      */
     QCopChannel::send ("QPE/TaskBar", "hideInputMethod()");
     QCopChannel::send ("QPE/TaskBar", "showInputMethod()");
 }
 
 void Keyboard::toggleRepeat(bool on) {
 
     useRepeat = on;
     cout << "setting useRepeat to: " << useRepeat << "\n";
 }