device.cpp

/**************
FILE          : device.cpp
***************
PROJECT       : SaX2 - library interface
              :
AUTHOR        : Marcus Schäfer <ms@suse.de>
              :
BELONGS TO    : SaX2 - SuSE advanced X11 configuration 
              : 
              :
DESCRIPTION   : native C++ class library to access SaX2
              : functionality. Easy to use interface for
              : //.../
              : - importing/exporting X11 configurations
              : - modifying/creating X11 configurations 
              : ---
              :
              :
STATUS        : Status: Development
**************/
#include "device.h"

namespace SaX {
//====================================
// Constructor...
//------------------------------------
SaXManipulateDevices::SaXManipulateDevices (
        SaXImport* desktop ,SaXImport* card ,SaXImport* layout
) {
        // .../
        // ----
        desktopHandlingAllowed = false;
        inputHandlingAllowed   = false;
        if ( (!desktop) || (!card) || (!layout)) {
                excNullPointerArgument ();
                qError (errorString(),EXC_NULLPOINTERARGUMENT);
                return;
        }
        if ( desktop->getSectionID() != SAX_DESKTOP ) {
                excDesktopImportBindFailed ( desktop->getSectionID() );
                qError (errorString(),EXC_DESKTOPIMPORTBINDFAILED);
                return;
        }
        if ( card->getSectionID() != SAX_CARD ) {
                excCardImportBindFailed ( card->getSectionID() );
                qError (errorString(),EXC_CARDIMPORTBINDFAILED);
                return;
        }
        if ( layout->getSectionID() != SAX_LAYOUT ) {
                excLayoutImportBindFailed ( layout->getSectionID() );
                qError (errorString(),EXC_LAYOUTIMPORTBINDFAILED);
                return;
        }
        desktopHandlingAllowed = true;
        mDesktop = desktop;
        mCard    = card;
        mLayout  = layout;
        mInput   = 0;
}

//====================================
// Constructor...
//------------------------------------
SaXManipulateDevices::SaXManipulateDevices (
        SaXImport* input, SaXImport* layout
) {
        // .../
        // ----
        desktopHandlingAllowed = false;
        inputHandlingAllowed   = false;
        if ((!input) || (!layout)) {
                excNullPointerArgument ();
                qError (errorString(),EXC_NULLPOINTERARGUMENT);
                return;
        }
        if (layout->getSectionID() != SAX_LAYOUT) {
                excLayoutImportBindFailed ( layout->getSectionID() );
                qError (errorString(),EXC_LAYOUTIMPORTBINDFAILED);
                return;
        }
        if (
                (input->getSectionID() != SAX_POINTERS) &&
                (input->getSectionID() != SAX_KEYBOARD)
        ) {
                excPointerImportBindFailed ( input->getSectionID() );
                qError (errorString(),EXC_POINTERIMPORTBINDFAILED);
                return;
        }
        inputHandlingAllowed = true;
        mInput   = input;
        mLayout  = layout;
        mDesktop = 0;
        mCard    = 0;
}

//====================================
// addDesktopDevice
//------------------------------------
int SaXManipulateDevices::addDesktopDevice (void) {
        // .../
        // ---
        if (! desktopHandlingAllowed) {
                return -1;
        }
        //====================================
        // determine new card/desktop ID...
        //------------------------------------
        int newID = mCard->getCount();
        if (! mCard->addID ( newID )) {
                return -1;
        }
        if (! mDesktop->addID ( newID )) {
                return -1;
        }
        //====================================
        // add new card/desktop sections...
        //------------------------------------
        QString newIDstring;
        newIDstring.sprintf ("%d",newID);
        mCard    -> setItem ("Identifier",QString("Device[" + newIDstring + "]"));
        mDesktop -> setItem ("Device"    ,QString("Device[" + newIDstring + "]"));
        mDesktop -> setItem ("Identifier",QString("Screen[" + newIDstring + "]"));
        mDesktop -> setItem ("Monitor"   ,QString("Monitor["+ newIDstring + "]"));
        //====================================
        // set some defaults...
        //------------------------------------
        mCard -> setItem ("Driver","fbdev");
        //====================================
        // update screen layout definition...
        //------------------------------------
        if (newID == 0) {
                mLayout -> setItem ("Screen:Screen[0]","<none> <none> <none> <none>");
                return mDesktop -> getCurrentID();
        }
        //====================================
        // update screen layout definition...
        //------------------------------------
        updateLayout (newID);
        return mDesktop -> getCurrentID();
}

//====================================
// addInputDevice
//------------------------------------
int SaXManipulateDevices::addInputDevice (const char* fashion) {
        // .../
        // ----
        if (! inputHandlingAllowed) {
                return -1;
        }
        //====================================
        // check fashion string...
        //------------------------------------
        QString inputFashion (fashion);
        if (
                (inputFashion != SAX_INPUT_TOUCHPANEL) &&
                (inputFashion != SAX_INPUT_TABLET)     &&
                (inputFashion != SAX_INPUT_PEN)        &&
                (inputFashion != SAX_INPUT_PAD)        &&
                (inputFashion != SAX_INPUT_ERASER)     &&
                (inputFashion != SAX_INPUT_MOUSE)      &&
                (inputFashion != SAX_INPUT_VNC)        &&
                (inputFashion != SAX_INPUT_KEYBOARD)
        ) {
                excWrongInputFashion (fashion);
                qError (errorString(),EXC_WRONGINPUTFASHION);
                return -1;
        }
        //====================================
        // determine new input device ID...
        //------------------------------------
        QString baseID ("Mouse");
        QString baseDriver ("mouse");
        if (fashion == (char*)SAX_INPUT_VNC) {
                baseDriver = "rfbmouse";
        }
        QDict<QString>* data = mInput->getTablePointer (0);
        int newID = mInput->getCount (true) * 2 + 1;
        if ((data) && (! data->isEmpty())) {
                baseDriver ="kbd";
                if (fashion == (char*)SAX_INPUT_VNC) {
                        baseDriver = "rfbkeyb";
                }
                baseID = "Keyboard";
                newID  = mInput->getCount (true) * 2;
        }
        if (! mInput -> addID (newID)) {
                return -1;
        }
        //====================================
        // add new input device section...
        //------------------------------------
        QString newIDstring;
        newIDstring.sprintf ("%d",newID);
        mInput -> setItem ("Identifier",baseID + "[" + newIDstring + "]");
        mInput -> setItem ("InputFashion",fashion);
        //====================================
        // set some defaults...
        //------------------------------------
        mInput -> setItem ("Driver",baseDriver);
        //====================================
        // update server layout
        //------------------------------------
        if (baseID == "Mouse") {
                QString inputDevice; QTextOStream (&inputDevice) 
                        << mLayout -> getItem ("InputDevice")
                        << ",Mouse[" << newIDstring << "]";
                mLayout -> setItem ("InputDevice",inputDevice);
        }
        if (baseID == "Keyboard") {
                QString inputDevice; QTextOStream (&inputDevice)
                        << mLayout -> getItem ("Keyboard")
                        << ",Keyboard[" << newIDstring << "]";
                mLayout -> setItem ("Keyboard",inputDevice);
        }
        return mInput -> getCurrentID();
}

//====================================
// removeDesktopDevice
//------------------------------------
int SaXManipulateDevices::removeDesktopDevice (int id) {
        // .../
        // ----
        if (! desktopHandlingAllowed) {
                return -1;
        }
        //====================================
        // don't allow removing the core entry  
        //------------------------------------
        if (id <= 0) {
                excInvalidArgument (id);
                qError (errorString(),EXC_INVALIDARGUMENT);
                return -1;
        }
        //====================================
        // remove desktop...
        //------------------------------------
        if (! mCard->delID (id)) {
                return -1;
        }
        if (! mDesktop->delID (id)) {
                return -1;
        }
        int newID = id - 1;
        //====================================
        // select previous desktop
        //------------------------------------
        mCard    -> setID (newID);
        mDesktop -> setID (newID);
        //====================================
    // update screen layout definition...
    //------------------------------------
        updateLayout (mDesktop->getCount());
        return mDesktop -> getCurrentID();
}

//====================================
// removeInputDevice
//------------------------------------
int SaXManipulateDevices::removeInputDevice (int id) {
        // .../
        // ----
        if (! inputHandlingAllowed) {
                return -1;
        }
        //====================================
        // don't allow removing the core entry   
        //------------------------------------
        if ((id <= 1) && (mInput->getCount() <= 2)) {
                excInvalidArgument (id);
                qError (errorString(),EXC_INVALIDARGUMENT);
                return -1;
        }
        //====================================
        // remove input devices...
        //------------------------------------
        if (! mInput->delID (id)) {
                return -1;
        }
        //====================================
        // select previous input device
        //------------------------------------
        for (int i=1;i<=2;i++) {
                QDict<QString>* data = mInput->getTablePointer (i);
                if ((data) && (! data->isEmpty())) {
                        mInput->setID (i);
                        break;
                }
        }
        //====================================
        // check input device type
        //------------------------------------
        bool isMouse = true;
        QString baseItem ("InputDevice");
        QString baseID   ("Mouse");
        if (mInput->getCurrentID() % 2 == 0) {
                isMouse  = false;
                baseItem = "Keyboard";
                baseID   = "Keyboard";
        }
        //====================================
        // update server layout
        //------------------------------------
        QString result;
        QString IDstring;
        IDstring.sprintf ("%d",id);
        QString deviceList  = mLayout -> getItem (baseItem);
        QStringList optlist = QStringList::split ( ",", deviceList );
        for ( QStringList::Iterator
                in = optlist.begin(); in != optlist.end(); ++in
        ) {
                QString item (*in);
                if (item == QString(baseID + "["+IDstring+"]")) {
                        continue;
                }
                QRegExp identifier ("\\[(.+)\\]");
                int pos = identifier.search (item);
                if (pos >= 0) {
                        int curID = identifier.cap(1).toInt();
                        if ( curID > id ) {
                                QString newMK;
                                newMK.sprintf ("%s[%d],",baseID.ascii(),curID - 2);
                                result.append ( newMK );
                        } else {
                                result.append (item+",");
                        }
                }
        }
        result.remove (result.length()-1,result.length());
        mLayout -> setItem (baseItem,result);
        return mInput -> getCurrentID();
}

//====================================
// updateLayout
//------------------------------------
void SaXManipulateDevices::updateLayout (int newID) {
        // .../
        // ----
        //====================================
        // remove current screen layout
        //------------------------------------
        for (int n=0;n<=newID;n++) {
                QString idString; idString.sprintf ("%d",n);
                mLayout -> removeEntry (QString("Screen:Screen["+ idString + "]"));
        }
        //====================================
        // check number of existing screens
        //------------------------------------
        int existing = newID;
        for (int n=0;n<=newID;n++) {
                if (! mCard -> getTablePointer (n)) {
                        existing--;
                }
        }
        //====================================
        // set standard layout if existing=0
        //------------------------------------
        if (existing == 0) {
                mLayout -> setItem (
                        "Screen:Screen[0]","<none> <none> <none> <none>"
                );
                return;
        }
        //====================================
        // create standard horizontal layout
        //------------------------------------
        for (int n=0;n<=existing;n++) {
                QString baseID,val;
                baseID.sprintf ("%d",n);
                QString key ("Screen:Screen[" + baseID + "]");
                for (int pos=0;pos<4;pos++) {
                        int posID = 0;
                        QString idString;
                        switch (pos) {
                                case 0:
                                        posID = n - 1;
                                break;
                                case 1:
                                        posID = n + 1;
                                break;
                                default:
                                        idString = "<none>";
                                break;
                        };
                        if (idString.isEmpty()) {
                        if ((posID < 0) || (posID > newID)) {
                                idString.sprintf ("<none>");
                        } else {
                                idString.sprintf ("Screen[%d]",posID);
                        }
                        }
                        QTextOStream (&val)
                                << val << " " << idString;
                }
                val = val.stripWhiteSpace();
                mLayout -> setItem (key,val);
        }
}
} // end namespace

---