libtderandr.cpp

/*  libtderandr.cpp     - class KRandr that makes it easy to use XRandr in KDE
    This file is part of KRandr 0.9.5
    Copyright (C) 2010  Timothy Pearson
    LibKRandr's homepage : http://www.trinitydesktop.org
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.
 
    This library 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
    Library General Public License for more details.
 
    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
 
    Send comments and bug fixes to Timothy Pearson <kb9vqf@pearsoncomputing.net>
 
***************************************************************************/
 
#include <tqdir.h>
#include <tqtimer.h>
#include <tqstringlist.h>
#include <tqregexp.h>
 
#include <tdelocale.h>
#include <tdemessagebox.h>
#include <tdeapplication.h>
 
#include <stdlib.h>
#include <unistd.h>
#include <cmath>
 
#include "libtderandr.h"
 
#include <X11/extensions/dpms.h>
 
// FIXME
// For now, just use the standalone xrandr program to apply the display settings
#define USE_XRANDR_PROGRAM
 
// This routine is courtsey of an answer on "Stack Overflow"
// It takes an LSB-first int and makes it an MSB-first int (or vice versa)
unsigned int reverse_bits(unsigned int x)
{
    x = (((x & 0xaaaaaaaa) >> 1) | ((x & 0x55555555) << 1));
    x = (((x & 0xcccccccc) >> 2) | ((x & 0x33333333) << 2));
    x = (((x & 0xf0f0f0f0) >> 4) | ((x & 0x0f0f0f0f) << 4));
    x = (((x & 0xff00ff00) >> 8) | ((x & 0x00ff00ff) << 8));
    return((x >> 16) | (x << 16));
}
 
// This routine returns the output of an arbitrary Bash command
TQString exec(const char * cmd) {
    TQString bashcommand = cmd;
    bashcommand = bashcommand.replace("\"", "\\\"");
    bashcommand = TQString("/bin/bash -c \"%1\" 2>&1").arg(bashcommand);
    FILE* pipe = popen(bashcommand.ascii(), "r");
    if (!pipe) return "ERROR";
    char buffer[128];
    TQString result = "";
    while(!feof(pipe)) {
        if(fgets(buffer, 128, pipe) != NULL) {
            result += buffer;
        }
    }
    pclose(pipe);
    result.remove(result.length(), 1);
    return result;
}
 
TQString capitalizeString(TQString in) {
    return in.left(1).upper() + in.right(in.length()-1);
}
 
TQString KRandrSimpleAPI::getIccFileName(TQString profileName, TQString screenName, TQString kde_confdir) {
    KSimpleConfig *t_config = NULL;
    KSimpleConfig *t_systemconfig = NULL;
    int t_numberOfProfiles;
    TQStringList t_cfgProfiles;
    TQString retval;
 
    if ((profileName != NULL) && (profileName != "")) {
        t_config = new KSimpleConfig( TQString::fromLatin1( "kiccconfigrc" ));
        t_config->setGroup(NULL);
        if (t_config->readBoolEntry("EnableICC", false) == true) {
            t_config->setGroup(profileName);
            retval = t_config->readEntry(screenName);
        }
        else {
            retval = "";
        }
        delete t_config;
    }
    else {
        t_systemconfig = new KSimpleConfig( kde_confdir + TQString("/kicc/kiccconfigrc") );
        t_systemconfig->setGroup(NULL);
        if (t_systemconfig->readBoolEntry("EnableICC", false) == true) {
            retval = t_systemconfig->readEntry("ICCFile");
        }
        else {
            retval = "";
        }
        delete t_systemconfig;
    }
 
    return retval;
}
 
TQString KRandrSimpleAPI::applyIccFile(TQString screenName, TQString fileName) {
    int i;
    int j;
    Display *randr_display;
    ScreenInfo *randr_screen_info;
    XRROutputInfo *output_info;
 
    int screenNumber = 0;
 
    if (fileName != "") {
        // FIXME
        // This should use the RRSetCrtcGamma function when available
        // That is the only way to get proper setting when two output are active at the same time
        // (otherwise in clone mode only one screen is available)
 
        // HACK
        // For now, simply exit with no changes if screenName is not an active output
 
        if (isValid() == true) {
            screenNumber = -1;
            randr_display = tqt_xdisplay();
            randr_screen_info = read_screen_info(randr_display);
            if (randr_screen_info == NULL) {
                return "";
            }
            j=0;
            for (i = 0; i < randr_screen_info->n_output; i++) {
                output_info = randr_screen_info->outputs[i]->info;
                // Look for ON outputs...
                if (!randr_screen_info->outputs[i]->cur_crtc) {
                    continue;
                }
                // ...that are connected
                if (RR_Disconnected == randr_screen_info->outputs[i]->info->connection) {
                    continue;
                }
                if (output_info->name == screenName) {
                    screenNumber = j;
                }
                j++;
            }
            freeScreenInfoStructure(randr_screen_info);
        }
 
        if (screenNumber >= 0) {
            // Apply ICC settings with XCalib
            TQString icc_command;
            FILE *pipe_xcalib;
            char xcalib_result[2048];
            int i;
            xcalib_result[0]=0;
 
            icc_command = TQString("xcalib \"%1\"").arg(fileName);
            if ((pipe_xcalib = popen(icc_command.ascii(), "r")) == NULL)
            {
                printf("Xcalib pipe error\n [xcalib apply]");
            }
            else {
                if (fgets(xcalib_result, 2048, pipe_xcalib)) {
                    pclose(pipe_xcalib);
                    for (i=1;i<2048;i++) {
                        if (xcalib_result[i] == 0) {
                            xcalib_result[i-1]=0;
                            i=2048;
                        }
                    }
                    if (strlen(xcalib_result) > 2) {
                        return xcalib_result;
                    }
                }
                else {
                    return "";
                }
            }
        }
    }
    else {
        // Reset ICC profile on this screen
 
        // FIXME
        // This should use the RRSetCrtcGamma function when available
        // That is the only way to get proper setting when two output are active at the same time
        // (otherwise in clone mode only one screen is available)
 
        // HACK
        // For now, simply exit with no changes if screenName is not an active output
 
        if (isValid() == true) {
            screenNumber = -1;
            randr_display = tqt_xdisplay();
            randr_screen_info = read_screen_info(randr_display);
            if (randr_screen_info == NULL) {
                return "";
            }
            j=0;
            for (i = 0; i < randr_screen_info->n_output; i++) {
                output_info = randr_screen_info->outputs[i]->info;
                // Look for ON outputs...
                if (!randr_screen_info->outputs[i]->cur_crtc) {
                    continue;
                }
                // ...that are connected
                if (RR_Disconnected == randr_screen_info->outputs[i]->info->connection) {
                    continue;
                }
                if (output_info->name == screenName) {
                    screenNumber = j;
                }
                j++;
            }
            freeScreenInfoStructure(randr_screen_info);
        }
 
        if (screenNumber >= 0) {
            // Apply ICC settings with XCalib
            TQString icc_command;
            FILE *pipe_xcalib;
            char xcalib_result[2048];
            int i;
            xcalib_result[0]=0;
 
            icc_command = TQString("xcalib -c");
            if ((pipe_xcalib = popen(icc_command.ascii(), "r")) == NULL)
            {
                printf("Xcalib pipe error\n [xcalib clear]");
            }
            else {
                if (fgets(xcalib_result, 2048, pipe_xcalib)) {
                    pclose(pipe_xcalib);
                    for (i=1;i<2048;i++) {
                        if (xcalib_result[i] == 0) {
                            xcalib_result[i-1]=0;
                            i=2048;
                        }
                    }
                    if (strlen(xcalib_result) > 2) {
                        return xcalib_result;
                    }
                }
                else {
                    return "";
                }
            }
        }
    }
    return "";
}
 
TQString KRandrSimpleAPI::applyIccConfiguration(TQString profileName, TQString kde_confdir) {
    int i;
    Display *randr_display;
    ScreenInfo *randr_screen_info;
    XRROutputInfo *output_info;
    KSimpleConfig *t_config;
 
    int screenNumber = 0;
    TQString errorstr = "";
 
    t_config = new KSimpleConfig( TQString::fromLatin1( "kiccconfigrc" ));
 
    // Find all screens
    if (isValid() == true) {
        randr_display = tqt_xdisplay();
        randr_screen_info = read_screen_info(randr_display);
        if (randr_screen_info == NULL) {
            return "";
        }
        for (i = 0; i < randr_screen_info->n_output; i++) {
            output_info = randr_screen_info->outputs[i]->info;
            errorstr = applyIccFile(output_info->name, getIccFileName(profileName, output_info->name, kde_confdir));
            if (errorstr != "") {
                return errorstr;
            }
        }
        freeScreenInfoStructure(randr_screen_info);
    }
    else {
        return applyIccFile(getIccFileName(profileName, "Default", kde_confdir), "Default");
    }
 
    t_config->writeEntry("CurrentProfile", profileName);
    t_config->sync();
    delete t_config;
 
    return "";
}
 
TQString KRandrSimpleAPI::getEDIDMonitorName(int card, TQString displayname) {
    TQString edid;
    TQByteArray binaryedid = getEDID(card, displayname);
    if (binaryedid.isNull())
        return TQString();
 
    // Get the manufacturer ID
    unsigned char letter_1 = ((binaryedid[8]>>2) & 0x1F) + 0x40;
    unsigned char letter_2 = (((binaryedid[8] & 0x03) << 3) | ((binaryedid[9]>>5) & 0x07)) + 0x40;
    unsigned char letter_3 = (binaryedid[9] & 0x1F) + 0x40;
    TQChar qletter_1 = TQChar(letter_1);
    TQChar qletter_2 = TQChar(letter_2);
    TQChar qletter_3 = TQChar(letter_3);
    TQString manufacturer_id = TQString("%1%2%3").arg(qletter_1).arg(qletter_2).arg(qletter_3);
 
    // Get the model ID
    unsigned int raw_model_id = (((binaryedid[10] << 8) | binaryedid[11]) << 16) & 0xFFFF0000;
    // Reverse the bit order
    unsigned int model_id = reverse_bits(raw_model_id);
 
    // Try to get the model name
    bool has_friendly_name = false;
    unsigned char descriptor_block[18];
    int i;
    for (i=72;i<90;i++) {
        descriptor_block[i-72] = binaryedid[i] & 0xFF;
    }
    if ((descriptor_block[0] != 0) || (descriptor_block[1] != 0) || (descriptor_block[3] != 0xFC)) {
        for (i=90;i<108;i++) {
            descriptor_block[i-90] = binaryedid[i] & 0xFF;
        }
        if ((descriptor_block[0] != 0) || (descriptor_block[1] != 0) || (descriptor_block[3] != 0xFC)) {
            for (i=108;i<126;i++) {
                descriptor_block[i-108] = binaryedid[i] & 0xFF;
            }
        }
    }
 
    TQString monitor_name;
    if ((descriptor_block[0] == 0) && (descriptor_block[1] == 0) && (descriptor_block[3] == 0xFC)) {
        char* pos = strchr((char *)(descriptor_block+5), '\n');
        if (pos) {
            *pos = 0;
            has_friendly_name = true;
            monitor_name = TQString((char *)(descriptor_block+5));
        }
        else {
            has_friendly_name = false;
        }
    }
 
    // [FIXME]
    // Look up manudacturer names if possible!
 
    if (has_friendly_name)
        edid = TQString("%1 %2").arg(manufacturer_id).arg(monitor_name);
    else
        edid = TQString("%1 0x%2").arg(manufacturer_id).arg(model_id, 0, 16);
 
    return edid;
}
 
TQByteArray KRandrSimpleAPI::getEDID(int card, TQString displayname) {
    TQFile file(TQString("/sys/class/drm/card%1-%2/edid").arg(card).arg(displayname));
    if (!file.open (IO_ReadOnly))
        return TQByteArray();
    TQByteArray binaryedid = file.readAll();
    file.close();
    return binaryedid;
}
 
TQString KRandrSimpleAPI::getCurrentProfile () {
    TQString profileName;
    KSimpleConfig *t_config;
 
    t_config = new KSimpleConfig( TQString::fromLatin1( "kiccconfigrc" ));
    profileName = t_config->readEntry("CurrentProfile");
    delete t_config;
    return profileName;
}
 
TQString KRandrSimpleAPI::applySystemWideIccConfiguration(TQString kde_confdir) {
    // Apply ICC settings with XCalib
    TQString icc_command;
    FILE *pipe_xcalib;
    char xcalib_result[2048];
    int i;
    xcalib_result[0]=0;
 
    icc_command = TQString("xcalib \"%1\"").arg(getIccFileName(NULL, "Default", kde_confdir));
    if ((pipe_xcalib = popen(icc_command.ascii(), "r")) == NULL)
    {
        printf("Xcalib pipe error [xcalib apply]\n");
    }
    else {
        if (fgets(xcalib_result, 2048, pipe_xcalib)) {
            pclose(pipe_xcalib);
            for (i=1;i<2048;i++) {
                if (xcalib_result[i] == 0) {
                    xcalib_result[i-1]=0;
                    i=2048;
                }
            }
            if (strlen(xcalib_result) > 2) {
                return xcalib_result;
            }
        }
        else {
            return "";
        }
    }
    return "";
}
 
TQStringList KRandrSimpleAPI::getDisplayConfigurationProfiles(TQString kde_confdir) {
    TQStringList ret;
 
    TQDir d(kde_confdir + "/displayconfig/");
    d.setFilter(TQDir::Files);
    d.setSorting(TQDir::Name);
 
    const TQFileInfoList *list = d.entryInfoList();
    if (list) {
        TQFileInfoListIterator it(*list);
        TQFileInfo *fi;
 
        while ((fi = it.current()) != 0) {
            if (fi->fileName() != "default") {
                ret.append(fi->fileName());
            }
            ++it;
        }
    }
 
    return ret;
}
 
bool KRandrSimpleAPI::deleteDisplayConfiguration(TQString profilename, TQString kde_confdir) {
    TQString fileName = kde_confdir + "/displayconfig/";
    fileName.append(profilename);
    return (!unlink(fileName.ascii()));
}
 
bool KRandrSimpleAPI::renameDisplayConfiguration(TQString profilename, TQString newprofilename, TQString kde_confdir) {
    TQString fileName = kde_confdir + "/displayconfig/";
    TQString newFileName = fileName;
    fileName.append(profilename);
    newFileName.append(newprofilename);
    TQDir d(kde_confdir + "/displayconfig/");
    return (d.rename(fileName, newFileName));
}
 
void KRandrSimpleAPI::saveDisplayConfiguration(bool enable, bool applyonstart, TQString profilename, TQString defaultprofilename, TQString kde_confdir, TQPtrList<SingleScreenData> screenInfoArray) {
    int i;
 
    TQString filename;
 
    filename = "displayglobals";
    filename.prepend(kde_confdir.append("/"));
    KSimpleConfig* display_config = new KSimpleConfig( filename );
    display_config->setGroup("General");
    display_config->writeEntry("EnableDisplayControl", enable);
    display_config->writeEntry("ApplySettingsOnStart", applyonstart);
    display_config->writeEntry("StartupProfileName", defaultprofilename);
    display_config->sync();
    delete display_config;
 
    filename = profilename;
    if (filename == "") {
        filename = "default";
    }
    filename.prepend(kde_confdir.append("/displayconfig/"));
 
    display_config = new KSimpleConfig( filename );
 
    i=0;
    SingleScreenData *screendata;
    for ( screendata=screenInfoArray.first(); screendata; screendata=screenInfoArray.next() ) {
        display_config->setGroup(TQString("SCREEN %1").arg(i));
        display_config->writeEntry("ScreenUniqueName", screendata->screenUniqueName);
        display_config->writeEntry("ScreenFriendlyName", screendata->screenFriendlyName);
        display_config->writeEntry("GenericScreenDetected", screendata->generic_screen_detected);
        display_config->writeEntry("ScreenConnected", screendata->screen_connected);
        display_config->writeEntry("Resolutions", screendata->resolutions);
        display_config->writeEntry("RefreshRates", screendata->refresh_rates);
        display_config->writeEntry("ColorDepths", screendata->color_depths);
        display_config->writeEntry("AvailableRotations", screendata->rotations);
        display_config->writeEntry("CurrentResolution", screendata->current_resolution_index);
        display_config->writeEntry("CurrentRefreshRate", screendata->current_refresh_rate_index);
        display_config->writeEntry("CurrentColorDepth", screendata->current_color_depth_index);
        display_config->writeEntry("CurrentRotation", screendata->current_rotation_index);
        display_config->writeEntry("CurrentOrientiation", screendata->current_orientation_mask);
        display_config->writeEntry("GammaRed", screendata->gamma_red);
        display_config->writeEntry("GammaGreen", screendata->gamma_green);
        display_config->writeEntry("GammaBlue", screendata->gamma_blue);
        display_config->writeEntry("CurrentXFlip", screendata->has_x_flip);
        display_config->writeEntry("CurrentYFlip", screendata->has_y_flip);
        display_config->writeEntry("SupportsTransformation", screendata->supports_transformations);
        display_config->writeEntry("IsPrimary", screendata->is_primary);
        display_config->writeEntry("IsExtended", screendata->is_extended);
        display_config->writeEntry("AbsXPos", screendata->absolute_x_position);
        display_config->writeEntry("AbsYPos", screendata->absolute_y_position);
        display_config->writeEntry("CurrentXPixelCount", screendata->current_x_pixel_count);
        display_config->writeEntry("CurrentYPixelCount", screendata->current_y_pixel_count);
        display_config->writeEntry("HasDPMS", screendata->has_dpms);
        display_config->writeEntry("EnableDPMS", screendata->enable_dpms);
        display_config->writeEntry("DPMSStandbyDelay", screendata->dpms_standby_delay);
        display_config->writeEntry("DPMSSuspendDelay", screendata->dpms_suspend_delay);
        display_config->writeEntry("DPMSPowerDownDelay", screendata->dpms_off_delay);
        i++;
    }
 
    display_config->sync();
    delete display_config;
}
 
TQPoint KRandrSimpleAPI::applyStartupDisplayConfiguration(TQString kde_confdir) {
    bool applyonstart = getDisplayConfigurationStartupAutoApplyEnabled(kde_confdir);
    if (applyonstart) {
        TQString profilename = getDisplayConfigurationStartupAutoApplyName(kde_confdir);
        return applyDisplayConfiguration(profilename, kde_confdir);
    }
    else {
        return TQPoint();
    }
}
 
TQPoint KRandrSimpleAPI::applyDisplayConfiguration(TQString profilename, TQString kde_confdir) {
    TQPoint ret;
 
    bool enabled = getDisplayConfigurationEnabled(kde_confdir);
    if (profilename == "") {
        profilename = "default";
    }
 
    if (enabled) {
        TQPtrList<SingleScreenData> screenInfoArray;
        screenInfoArray = loadDisplayConfiguration(profilename, kde_confdir);
        if (screenInfoArray.count() > 0) {
            applyDisplayConfiguration(screenInfoArray, FALSE, kde_confdir);
        }
        destroyScreenInformationObject(screenInfoArray);
        screenInfoArray = readCurrentDisplayConfiguration();
        ensureMonitorDataConsistency(screenInfoArray);
        ret = primaryScreenOffsetFromTLC(screenInfoArray);
        destroyScreenInformationObject(screenInfoArray);
    }
 
    return ret;
}
 
TQPtrList<SingleScreenData> KRandrSimpleAPI::loadDisplayConfiguration(TQString profilename, TQString kde_confdir) {
    int i;
 
    TQString filename;
    filename = profilename;
    if (filename == "") {
        filename = "default";
    }
    filename.prepend(kde_confdir.append("/displayconfig/"));
 
    KSimpleConfig* display_config = new KSimpleConfig( filename );
 
    TQStringList grouplist = display_config->groupList();
    SingleScreenData *screendata;
    TQPtrList<SingleScreenData> screenInfoArray;
    for ( TQStringList::Iterator it = grouplist.begin(); it != grouplist.end(); ++it ) {
        if ((*it).startsWith("SCREEN ")) {
            display_config->setGroup(*it);
            i = ((*it).remove("SCREEN ")).toInt();
            screendata = new SingleScreenData;
            screenInfoArray.append(screendata);
            screendata->screenUniqueName = display_config->readEntry("ScreenUniqueName");
            screendata->screenFriendlyName = display_config->readEntry("ScreenFriendlyName");
            screendata->generic_screen_detected = display_config->readBoolEntry("GenericScreenDetected");
            screendata->screen_connected = display_config->readBoolEntry("ScreenConnected");
            screendata->resolutions = display_config->readListEntry("Resolutions");
            screendata->refresh_rates = display_config->readListEntry("RefreshRates");
            screendata->color_depths = display_config->readListEntry("ColorDepths");
            screendata->rotations = display_config->readListEntry("AvailableRotations");
            screendata->current_resolution_index = display_config->readNumEntry("CurrentResolution");
            screendata->current_refresh_rate_index = display_config->readNumEntry("CurrentRefreshRate");
            screendata->current_color_depth_index = display_config->readNumEntry("CurrentColorDepth");
            screendata->current_rotation_index = display_config->readNumEntry("CurrentRotation");
            screendata->current_orientation_mask = display_config->readNumEntry("CurrentOrientiation");
            screendata->gamma_red = display_config->readDoubleNumEntry("GammaRed");
            screendata->gamma_green = display_config->readDoubleNumEntry("GammaGreen");
            screendata->gamma_blue = display_config->readDoubleNumEntry("GammaBlue");
            screendata->has_x_flip = display_config->readBoolEntry("CurrentXFlip");
            screendata->has_y_flip = display_config->readBoolEntry("CurrentYFlip");
            screendata->supports_transformations = display_config->readBoolEntry("SupportsTransformation");
            screendata->is_primary = display_config->readBoolEntry("IsPrimary");
            screendata->is_extended = display_config->readBoolEntry("IsExtended");
            screendata->absolute_x_position = display_config->readNumEntry("AbsXPos");
            screendata->absolute_y_position = display_config->readNumEntry("AbsYPos");
            screendata->current_x_pixel_count = display_config->readNumEntry("CurrentXPixelCount");
            screendata->current_y_pixel_count = display_config->readNumEntry("CurrentYPixelCount");
            screendata->has_dpms = display_config->readBoolEntry("HasDPMS");
            screendata->enable_dpms = display_config->readBoolEntry("EnableDPMS");
            screendata->dpms_standby_delay = display_config->readNumEntry("DPMSStandbyDelay");
            screendata->dpms_suspend_delay = display_config->readNumEntry("DPMSSuspendDelay");
            screendata->dpms_off_delay = display_config->readNumEntry("DPMSPowerDownDelay");
        }
    }
 
    delete display_config;
 
    return screenInfoArray;
}
 
int KRandrSimpleAPI::getHardwareRotationFlags(SingleScreenData* screendata) {
    int rotationFlags = 0;
    if (screendata->current_rotation_index == ROTATION_0_DEGREES_INDEX) {
        rotationFlags = rotationFlags | RandRScreen::Rotate0;
    }
    else if (screendata->current_rotation_index == ROTATION_90_DEGREES_INDEX) {
        rotationFlags = rotationFlags | RandRScreen::Rotate90;
    }
    else if (screendata->current_rotation_index == ROTATION_180_DEGREES_INDEX) {
        rotationFlags = rotationFlags | RandRScreen::Rotate180;
    }
    else if (screendata->current_rotation_index == ROTATION_270_DEGREES_INDEX) {
        rotationFlags = rotationFlags | RandRScreen::Rotate270;
    }
    if (screendata->has_x_flip) {
        rotationFlags = rotationFlags | RandRScreen::ReflectX;
    }
    if (screendata->has_y_flip) {
        rotationFlags = rotationFlags | RandRScreen::ReflectY;
    }
    return rotationFlags;
}
 
#define USE_XRANDR_PROGRAM
 
bool KRandrSimpleAPI::applyDisplayConfiguration(TQPtrList<SingleScreenData> screenInfoArray, bool test, TQString kde_confdir) {
    int i;
    int j;
    bool accepted = true;
    Display *randr_display;
    XRROutputInfo *output_info;
    ScreenInfo *randr_screen_info;
 
    SingleScreenData *screendata;
 
    TQPtrList<SingleScreenData> oldconfig;
    if (test == TRUE) {
        oldconfig = readCurrentDisplayConfiguration();
    }
 
    if (isValid() == true) {
#ifdef USE_XRANDR_PROGRAM
        // Assemble the command string for xrandr
        TQString command;
        command = "xrandr";
 
        randr_display = tqt_xdisplay();
        randr_screen_info = read_screen_info(randr_display);
        for (i = 0; i < screenInfoArray.count(); i++) {
            screendata = screenInfoArray.at(i);
            if (screendata) {
                output_info = randr_screen_info->outputs[i]->info;
                command.append(" --output ").append(output_info->name);
                if (screendata->is_primary || screendata->is_extended) {
                    command.append(TQString(" --mode %1x%2").arg(screendata->current_x_pixel_count).arg(screendata->current_y_pixel_count));
                    command.append(TQString(" --pos %1x%2").arg(screendata->absolute_x_position).arg(screendata->absolute_y_position));
                    command.append(TQString(" --refresh %1").arg(atoi((*screendata->refresh_rates.at(screendata->current_refresh_rate_index)).ascii())));
                    command.append(TQString(" --gamma %1:%2:%3").arg(screendata->gamma_red).arg(screendata->gamma_green).arg(screendata->gamma_blue));
                    if (screendata->current_rotation_index == ROTATION_0_DEGREES_INDEX) command.append(" --rotate ").append("normal");
                    if (screendata->current_rotation_index == ROTATION_90_DEGREES_INDEX) command.append(" --rotate ").append("left");
                    if (screendata->current_rotation_index == ROTATION_180_DEGREES_INDEX) command.append(" --rotate ").append("inverted");
                    if (screendata->current_rotation_index == ROTATION_270_DEGREES_INDEX) command.append(" --rotate ").append("right");
                    if ((screendata->has_x_flip == 0) && (screendata->has_y_flip == 0)) command.append(" --reflect ").append("normal");
                    if ((screendata->has_x_flip == 1) && (screendata->has_y_flip == 0)) command.append(" --reflect ").append("x");
                    if ((screendata->has_x_flip == 0) && (screendata->has_y_flip == 1)) command.append(" --reflect ").append("y");
                    if ((screendata->has_x_flip == 1) && (screendata->has_y_flip == 1)) command.append(" --reflect ").append("xy");
                    if (screendata->is_primary) {
                        command.append(" --primary");
                    }
                }
                else {
                    command.append(" --off");
                }
            }
            else {
                printf("[WARNING] Unable to find configuration for monitor %d; settings may not be correctly applied...\n", i); fflush(stdout);
            }
        }
        freeScreenInfoStructure(randr_screen_info);
 
        TQString xrandr_command_output = exec(command.ascii());
        xrandr_command_output = xrandr_command_output.stripWhiteSpace();
        if (test) {
            // In case gamma settings is not supported, try again without '--gamma' parameter
            if (xrandr_command_output == "xrandr: Gamma size is 0.") {
                command = command.replace(TQRegExp("--gamma [0-9\\.]*:[0-9\\.]*:[0-9\\.]*"), "");
                xrandr_command_output = exec(command.ascii());
                xrandr_command_output = xrandr_command_output.stripWhiteSpace();
            }
            
            if(xrandr_command_output.startsWith("xrandr: Failed to get size of gamma for output")) {
                KMessageBox::sorry(0, xrandr_command_output, i18n("Setting gamma failed."));
            } else if (xrandr_command_output != "") {
                applyDisplayConfiguration(oldconfig, FALSE, kde_confdir);
                accepted = false;
                destroyScreenInformationObject(oldconfig);
                KMessageBox::sorry(0, xrandr_command_output, i18n("XRandR encountered a problem"));
                return accepted;
            }
        }
#else
        randr_display = tqt_xdisplay();
        randr_screen_info = read_screen_info(randr_display);
        // Turn off all displays
        for (i = 0; i < screenInfoArray.count(); i++) {
            screendata = screenInfoArray.at(i);
            output_info = randr_screen_info->outputs[i]->info;
 
            randr_screen_info->cur_crtc = randr_screen_info->outputs[i]->cur_crtc;
            randr_screen_info->cur_output = randr_screen_info->outputs[i];
            randr_screen_info->cur_output->auto_set = 0;
            randr_screen_info->cur_output->off_set = 1;
            output_off (randr_screen_info, randr_screen_info->cur_output);
            j=main_low_apply(randr_screen_info);
        }
        freeScreenInfoStructure(randr_screen_info);
        randr_screen_info = read_screen_info(randr_display);
        // Turn on the primary display
        for (i = 0; i < screenInfoArray.count(); i++) {
            screendata = screenInfoArray.at(i);
            output_info = randr_screen_info->outputs[i]->info;
 
            if (screendata->is_primary == true) {
                randr_screen_info->cur_crtc = randr_screen_info->outputs[i]->cur_crtc;
                randr_screen_info->cur_output = randr_screen_info->outputs[i];
                randr_screen_info->cur_output->auto_set = 1;
                randr_screen_info->cur_output->off_set = 0;
                output_auto (randr_screen_info, randr_screen_info->cur_output);
                j=main_low_apply(randr_screen_info);
            }
        }
        freeScreenInfoStructure(randr_screen_info);
        // Handle the remaining displays
        randr_screen_info = read_screen_info(randr_display);
        for (i = 0; i < screenInfoArray.count(); i++) {
            screendata = screenInfoArray.at(i);
            output_info = randr_screen_info->outputs[i]->info;
 
            // Activate or deactivate the screens as necessary
            randr_screen_info->cur_crtc = randr_screen_info->outputs[i]->cur_crtc;
            randr_screen_info->cur_output = randr_screen_info->outputs[i];
            if (screendata->is_primary == false) {
                if (screendata->is_primary || screendata->is_extended) {
                    randr_screen_info->cur_output->auto_set = 1;
                    randr_screen_info->cur_output->off_set = 0;
                    output_auto (randr_screen_info, randr_screen_info->cur_output);
                    j=main_low_apply(randr_screen_info);
                }
                else {
                    randr_screen_info->cur_output->auto_set = 0;
                    randr_screen_info->cur_output->off_set = 1;
                    output_off (randr_screen_info, randr_screen_info->cur_output);
                    j=main_low_apply(randr_screen_info);
                }
            }
        }
        freeScreenInfoStructure(randr_screen_info);
        randr_screen_info = read_screen_info(randr_display);
        for (i = 0; i < screenInfoArray.count(); i++) {
            screendata = screenInfoArray.at(i);
            output_info = randr_screen_info->outputs[i]->info;
 
            if (screendata->is_primary || screendata->is_extended) {
                // Set rotation, refresh rate, and size
                RandRScreen *cur_screen = new RandRScreen(i);
                cur_screen->proposeSize(screendata->current_resolution_index);
                cur_screen->proposeRefreshRate(screendata->current_refresh_rate_index);
                cur_screen->proposeRotation(getHardwareRotationFlags(screendata));
                cur_screen->applyProposed();
                delete cur_screen;
 
                // Force data reload
                randr_screen_info = read_screen_info(randr_display);
                output_info = randr_screen_info->outputs[i]->info;
 
                // Finally, set the screen's position
                randr_screen_info->cur_crtc = randr_screen_info->outputs[i]->cur_crtc;
                if (randr_screen_info->cur_crtc) {
                    randr_screen_info->cur_crtc->cur_x = screendata->absolute_x_position;
                    randr_screen_info->cur_crtc->cur_y = screendata->absolute_y_position;
                    j=main_low_apply(randr_screen_info);
                }
            }
        }
        freeScreenInfoStructure(randr_screen_info);
#endif
    }
 
    applyDisplayGamma(screenInfoArray);
    applyDisplayDPMS(screenInfoArray);
    TQString current_icc_profile = getCurrentProfile();
    applySystemWideIccConfiguration(kde_confdir);
    applyIccConfiguration(current_icc_profile, kde_confdir);
 
    if (test == TRUE) {
        int ret = showTestConfigurationDialog();
        if (!ret) {
            applyDisplayConfiguration(oldconfig, FALSE, kde_confdir);
            accepted = false;
        }
        destroyScreenInformationObject(oldconfig);
    }
 
    return accepted;
}
 
TQPtrList<SingleScreenData> KRandrSimpleAPI::copyScreenInformationObject(TQPtrList<SingleScreenData> screenInfoArray) {
    SingleScreenData *origscreendata;
    SingleScreenData *copyscreendata;
    TQPtrList<SingleScreenData> retArray;
    for ( origscreendata = screenInfoArray.first(); origscreendata; origscreendata = screenInfoArray.next() ) {
        copyscreendata = new SingleScreenData;
        *copyscreendata = *origscreendata;
        retArray.append(copyscreendata);
    }
    return retArray;
}
 
void KRandrSimpleAPI::destroyScreenInformationObject(TQPtrList<SingleScreenData> screenInfoArray) {
    SingleScreenData *screendata;
    for ( screendata = screenInfoArray.first(); screendata; screendata = screenInfoArray.next() ) {
        screenInfoArray.remove(screendata);
        delete screendata;
    }
}
 
void KRandrSimpleAPI::ensureMonitorDataConsistency(TQPtrList<SingleScreenData> screenInfoArray) {
    int i;
    SingleScreenData *screendata;
 
    int numberOfScreens = screenInfoArray.count();
 
    for (i=0;i<numberOfScreens;i++) {
        screendata = screenInfoArray.at(i);
        if (!screendata->screen_connected) {
            screendata->is_primary = false;
            screendata->is_extended = false;
        }
    }
 
    bool has_primary_monitor = false;
    for (i=0;i<numberOfScreens;i++) {
        screendata = screenInfoArray.at(i);
        if (screendata->is_primary) {
            has_primary_monitor = true;
        }
    }
    if (!has_primary_monitor) {
        for (i=0;i<numberOfScreens;i++) {
            screendata = screenInfoArray.at(i);
            if (!has_primary_monitor) {
                if (screendata->screen_connected && screendata->is_extended) {
                    screendata->is_primary = true;
                    screendata->is_extended = true;
                    has_primary_monitor = true;
                }
            }
        }
    }
    if (!has_primary_monitor) {
        for (i=0;i<numberOfScreens;i++) {
            screendata = screenInfoArray.at(i);
            if (!has_primary_monitor) {
                if (screendata->screen_connected) {
                    screendata->is_primary = true;
                    screendata->is_extended = true;
                    has_primary_monitor = true;
                }
            }
        }
    }
 
    bool found_first_primary_monitor = false;
    for (i=0;i<numberOfScreens;i++) {
        screendata = screenInfoArray.at(i);
        if (screendata->is_primary) {
            if (!found_first_primary_monitor) {
                found_first_primary_monitor = true;
            }
            else {
                screendata->is_primary = false;
            }
        }
    }
 
    for (i=0;i<numberOfScreens;i++) {
        screendata = screenInfoArray.at(i);
        if (screendata->is_primary) {
            screendata->is_extended = true;
        }
    }
 
    for (i=0;i<numberOfScreens;i++) {
        screendata = screenInfoArray.at(i);
        TQString resolutionstring = screendata->resolutions[screendata->current_resolution_index];
        int separator_pos = resolutionstring.find(" x ");
        TQString x_res_string = resolutionstring.left(separator_pos);
        TQString y_res_string = resolutionstring.right(resolutionstring.length()-separator_pos-3);
        screendata->current_x_pixel_count = x_res_string.toInt();
        screendata->current_y_pixel_count = y_res_string.toInt();
        screendata->current_orientation_mask = getHardwareRotationFlags(screendata);
    }
 
    // Each screen's absolute position is given relative to the primary monitor
    // Fix up the absolute positions
    int primary_offset_x = 0;
    int primary_offset_y = 0;
    for (i=0;i<numberOfScreens;i++) {
        screendata = screenInfoArray.at(i);
        if (screendata->is_primary) {
            primary_offset_x = screendata->absolute_x_position;
            primary_offset_y = screendata->absolute_y_position;
            primary_offset_x = primary_offset_x * (-1);
            primary_offset_y = primary_offset_y * (-1);
        }
    }
    for (i=0;i<numberOfScreens;i++) {
        screendata = screenInfoArray.at(i);
        screendata->absolute_x_position = screendata->absolute_x_position + primary_offset_x;
        screendata->absolute_y_position = screendata->absolute_y_position + primary_offset_y;
    }
}
 
TQPoint KRandrSimpleAPI::primaryScreenOffsetFromTLC(TQPtrList<SingleScreenData> screenInfoArray) {
    int i;
    SingleScreenData *screendata;
    int numberOfScreens = screenInfoArray.count();
 
    int primary_offset_x = 0;
    int primary_offset_y = 0;
    for (i=0;i<numberOfScreens;i++) {
        screendata = screenInfoArray.at(i);
        if (screendata->absolute_x_position < primary_offset_x) {
            primary_offset_x = screendata->absolute_x_position;
        }
        if (screendata->absolute_y_position < primary_offset_y) {
            primary_offset_y = screendata->absolute_y_position;
        }
    }
    primary_offset_x = primary_offset_x * (-1);
    primary_offset_y = primary_offset_y * (-1);
 
    return TQPoint(primary_offset_x, primary_offset_y);
}
 
HotPlugRulesList KRandrSimpleAPI::getHotplugRules(TQString kde_confdir) {
    int i;
    TQString filename;
    HotPlugRulesList ret;
 
    filename = "displayglobals";
    filename.prepend(kde_confdir.append("/"));
    KSimpleConfig* display_config = new KSimpleConfig( filename );
 
    TQStringList grouplist = display_config->groupList();
    for ( TQStringList::Iterator it = grouplist.begin(); it != grouplist.end(); ++it ) {
        if (!(*it).startsWith("Hotplug-Rule")) {
            continue;
        }
        HotPlugRule rule;
        display_config->setGroup(*it);
        rule.outputs = display_config->readListEntry("Outputs");
        rule.states = display_config->readIntListEntry("States");
        rule.profileName = display_config->readEntry("Profile");
        ret.append(rule);
    }
    delete display_config;
 
    return ret;
}
 
void KRandrSimpleAPI::saveHotplugRules(HotPlugRulesList rules, TQString kde_confdir) {
    int i;
    TQString filename;
 
    filename = "displayglobals";
    filename.prepend(kde_confdir.append("/"));
    KSimpleConfig* display_config = new KSimpleConfig( filename );
    TQStringList grouplist = display_config->groupList();
    for ( TQStringList::Iterator it = grouplist.begin(); it != grouplist.end(); ++it ) {
        if (!(*it).startsWith("Hotplug-Rule")) {
            continue;
        }
        display_config->deleteGroup(*it, true, false);
    }
    HotPlugRulesList::Iterator it;
    i=0;
    for (it=rules.begin(); it != rules.end(); ++it) {
        display_config->setGroup(TQString("Hotplug-Rule%1").arg(i));
        display_config->writeEntry("Outputs", (*it).outputs);
        display_config->writeEntry("States", (*it).states);
        display_config->writeEntry("Profile", (*it).profileName);
        i++;
    }
    display_config->sync();
    delete display_config;
}
 
bool KRandrSimpleAPI::getDisplayConfigurationEnabled(TQString kde_confdir) {
    TQString filename = "displayglobals";
    filename.prepend(kde_confdir.append("/"));
    KSimpleConfig* display_config = new KSimpleConfig( filename );
    display_config->setGroup("General");
    bool enabled = display_config->readBoolEntry("EnableDisplayControl", false);
    delete display_config;
 
    return enabled;
}
 
bool KRandrSimpleAPI::getDisplayConfigurationStartupAutoApplyEnabled(TQString kde_confdir) {
    TQString filename = "displayglobals";
    filename.prepend(kde_confdir.append("/"));
    KSimpleConfig* display_config = new KSimpleConfig( filename );
    display_config->setGroup("General");
    bool applyonstart = display_config->readBoolEntry("ApplySettingsOnStart", false);
    delete display_config;
 
    return applyonstart;
}
 
TQString KRandrSimpleAPI::getDisplayConfigurationStartupAutoApplyName(TQString kde_confdir) {
    TQString filename = "displayglobals";
    filename.prepend(kde_confdir.append("/"));
    KSimpleConfig* display_config = new KSimpleConfig( filename );
    display_config->setGroup("General");
    TQString profilename = display_config->readEntry("StartupProfileName", "");
    delete display_config;
 
    return profilename;
}
 
void KRandrSimpleAPI::applyHotplugRules(TQString kde_confdir) {
    bool enabled = getDisplayConfigurationEnabled(kde_confdir);
    if (!enabled) {
        return;
    }
 
    HotPlugRulesList rules = getHotplugRules(kde_confdir);
    TQPtrList<SingleScreenData> screenInfoArray = readCurrentDisplayConfiguration();
 
    int i;
    int j;
    TQString bestRule;
    int bestRuleMatchCount = 0;
    SingleScreenData *screendata = NULL;
    HotPlugRulesList::Iterator it;
    for (it=rules.begin(); it != rules.end(); ++it) {
        // Compare each rule against the current display configuration
        // It an output matches the state given in the rule, increment matchCount
        HotPlugRule rule = *it;
        int matchCount = 0;
        int numberOfScreens = screenInfoArray.count();
        for (i=0;i<numberOfScreens;i++) {
            screendata = screenInfoArray.at(i);
            for (j=0; j<(*it).outputs.count(); j++) {
                if ((*it).outputs[j] != screendata->screenUniqueName) {
                    continue;
                }
                if ((*it).states[j] == HotPlugRule::Connected) {
                    if (screendata->screen_connected) {
                        matchCount++;
                    }
                }
                else if ((*it).states[j] == HotPlugRule::Disconnected) {
                    if (!screendata->screen_connected) {
                        matchCount++;
                    }
                }
            }
        }
 
        if (matchCount > bestRuleMatchCount) {
            bestRuleMatchCount = matchCount;
            bestRule = rule.profileName;
        }
    }
 
    destroyScreenInformationObject(screenInfoArray);
 
    if (bestRuleMatchCount > 0) {
        // At least one rule matched...
        // Apply the profile name in bestRule to the display hardware
        applyDisplayConfiguration(bestRule, kde_confdir);
    }
}
 
void KRandrSimpleAPI::applyDisplayGamma(TQPtrList<SingleScreenData> screenInfoArray) {
    int i;
    Display *randr_display;
    XRROutputInfo *output_info;
    ScreenInfo *randr_screen_info;
    XRRCrtcGamma *gamma;
 
    SingleScreenData *screendata;
 
    if (isValid() == true) {
        randr_display = tqt_xdisplay();
        randr_screen_info = read_screen_info(randr_display);
        for (i = 0; i < screenInfoArray.count(); i++) {
            screendata = screenInfoArray.at(i);
            output_info = randr_screen_info->outputs[i]->info;
            CrtcInfo *current_crtc = randr_screen_info->outputs[i]->cur_crtc;
            if (!current_crtc) {
                continue;
            }
            // vvvvvvvvv This chunk of code is borrowed from xrandr vvvvvvvvvv
            int size = XRRGetCrtcGammaSize(randr_display, current_crtc->id);
            if (!size) {
                continue;
            }
            gamma = XRRAllocGamma(size);
            if (!gamma) {
                continue;
            }
            for (i = 0; i < size; i++) {
                if (screendata->gamma_red == 1.0)
                    gamma->red[i] = i << 8;
                else
                    gamma->red[i] = (pow((double)i/(double)(size-1), (double)screendata->gamma_red) * (double)(size-1)*256);
 
                if (screendata->gamma_green == 1.0)
                    gamma->green[i] = i << 8;
                else
                    gamma->green[i] = (pow((double)i/(double)(size-1), (double)screendata->gamma_green) * (double)(size-1)*256);
 
                if (screendata->gamma_blue == 1.0)
                    gamma->blue[i] = i << 8;
                else
                    gamma->blue[i] = (pow((double)i/(double)(size-1), (double)screendata->gamma_blue) * (double)(size-1)*256);
            }
            XRRSetCrtcGamma(randr_display, current_crtc->id, gamma);
            free(gamma);
            // ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        }
        freeScreenInfoStructure(randr_screen_info);
    }
}
 
void KRandrSimpleAPI::applyDisplayDPMS(TQPtrList<SingleScreenData> screenInfoArray) {
    int i;
    Display *randr_display;
    XRROutputInfo *output_info;
    ScreenInfo *randr_screen_info;
    XRRCrtcGamma *gamma;
 
    SingleScreenData *screendata;
 
    if (isValid() == true) {
        randr_display = tqt_xdisplay();
        randr_screen_info = read_screen_info(randr_display);
        for (i = 0; i < screenInfoArray.count(); i++) {
            screendata = screenInfoArray.at(i);
            output_info = randr_screen_info->outputs[i]->info;
            CrtcInfo *current_crtc = randr_screen_info->outputs[i]->cur_crtc;
            if (!current_crtc) {
                continue;
            }
            if (!screendata->has_dpms) {
                continue;
            }
            if (screendata->enable_dpms) {
                DPMSSetTimeouts(randr_display, screendata->dpms_standby_delay, screendata->dpms_suspend_delay, screendata->dpms_off_delay);
                DPMSEnable(randr_display);
            }
            else {
                DPMSDisable(randr_display);
            }
        }
        freeScreenInfoStructure(randr_screen_info);
    }
}
 
void KRandrSimpleAPI::freeScreenInfoStructure(ScreenInfo* screen_info) {
    int i;
 
    for (i=0; i<screen_info->n_crtc; i++) {
        free(screen_info->crtcs[i]);
    }
    for (i=0; i<screen_info->n_output; i++) {
        free(screen_info->outputs[i]);
    }
    free(screen_info->outputs);
    free(screen_info->crtcs);
    free(screen_info);
}
 
TQPtrList<SingleScreenData> KRandrSimpleAPI::readCurrentDisplayConfiguration() {
    // Discover display information
    int i;
    int j;
 
    XRROutputInfo *output_info;
    SingleScreenData *screendata;
    TQPtrList<SingleScreenData> screenInfoArray;
 
    Display *randr_display;
    ScreenInfo *randr_screen_info;
 
    // Clear existing info
    destroyScreenInformationObject(screenInfoArray);
 
    int numberOfScreens = 0;
    if (isValid() == true) {
        randr_display = tqt_xdisplay();
        randr_screen_info = read_screen_info(randr_display);
        for (i = 0; i < randr_screen_info->n_output; i++) {
            output_info = randr_screen_info->outputs[i]->info;
            CrtcInfo *current_crtc = randr_screen_info->outputs[i]->cur_crtc;
 
            // Create new data object
            screendata = new SingleScreenData;
            screenInfoArray.append(screendata);
            screendata->screenUniqueName = TQString(i18n("%1:%2")).arg(":0").arg(capitalizeString(output_info->name));  // [FIXME] How can I get the name of the Xorg graphics driver currently in use?
            screendata->screenFriendlyName = TQString(i18n("%1. %2 output on %3")).arg(i+1).arg(capitalizeString(output_info->name)).arg(":0"); // [FIXME] How can I get the name of the Xorg graphics driver currently in use?
            screendata->generic_screen_detected = false;
 
            // Attempt to use KMS to find screen EDID and name
            TQString edid = getEDIDMonitorName(0, output_info->name);   // [FIXME] Don't hardwire to card 0!
            if (!edid.isNull()) {
                screendata->screenFriendlyName = TQString(i18n("%1. %2 on %3 on card %4")).arg(i+1).arg(edid).arg(capitalizeString(output_info->name)).arg("0");    // [FIXME] How can I get the name of the Xorg graphics driver currently in use?
            }
 
            // Get resolutions
            bool screen_active;
            RandRScreen *cur_screen = 0;
            if (RR_Disconnected == randr_screen_info->outputs[i]->info->connection) {
                // Output DISCONNECTED
                screen_active = false;
            }
            else {
                if (randr_screen_info->outputs[i]->cur_crtc) {
                    // Output CONNECTED and ON
                    screen_active = true;
                    cur_screen = new RandRScreen(i);
                }
                else {
                    // Output CONNECTED and OFF
                    screen_active = false;
                    cur_screen = new RandRScreen(i);
                }
            }
 
            // Get DPMS information
            screendata->has_dpms = 1;   // [FIXME] Master Xorg check for global DPMS support should go here if possible
            if (screendata->has_dpms) {
                CARD16 dpms_standby_delay;
                CARD16 dpms_suspend_delay;
                CARD16 dpms_off_delay;
                screendata->has_dpms = DPMSGetTimeouts(randr_display, &dpms_standby_delay, &dpms_suspend_delay, &dpms_off_delay);
                screendata->dpms_standby_delay = dpms_standby_delay;
                screendata->dpms_suspend_delay = dpms_suspend_delay;
                screendata->dpms_off_delay = dpms_off_delay;
                if (screendata->has_dpms) {
                    CARD16 power_level;
                    BOOL enable_dpms;
                    screendata->has_dpms = DPMSInfo(randr_display, &power_level, &enable_dpms);
                    screendata->enable_dpms = enable_dpms;
                }
            }
            if (!screendata->has_dpms) {
                screendata->enable_dpms = false;
                screendata->dpms_standby_delay = 0;
                screendata->dpms_suspend_delay = 0;
                screendata->dpms_off_delay = 0;
            }
 
            if (cur_screen) {
                screendata->screen_connected = true;
                for (int j = 0; j < cur_screen->numSizes(); j++) {
                    screendata->resolutions.append(i18n("%1 x %2").arg(cur_screen->pixelSize(j).width()).arg(cur_screen->pixelSize(j).height()));
                }
                screendata->current_resolution_index = 0;
                if (current_crtc) {
                    screendata->current_resolution_index = screendata->resolutions.findIndex(i18n("%1 x %2").arg(current_crtc->info->width).arg(current_crtc->info->height));
                }
                if (screendata->current_resolution_index < 0) {
                    screendata->current_resolution_index = cur_screen->proposedSize();
                }
 
                // Get refresh rates
                TQStringList rr = cur_screen->refreshRates(screendata->current_resolution_index);
                for (TQStringList::Iterator it = rr.begin(); it != rr.end(); ++it) {
                    screendata->refresh_rates.append(*it);
                }
                screendata->current_refresh_rate_index = cur_screen->proposedRefreshRate();
 
                // Get color depths
                // [FIXME]
                screendata->color_depths.append(i18n("Default"));
                screendata->current_color_depth_index = 0;
 
                // Get orientation flags
                // RandRScreen::Rotate0
                // RandRScreen::Rotate90
                // RandRScreen::Rotate180
                // RandRScreen::Rotate270
                // RandRScreen::ReflectX
                // RandRScreen::ReflectY
 
                screendata->rotations.append(i18n("0 degrees"));
                screendata->rotations.append(i18n("90 degrees"));
                screendata->rotations.append(i18n("180 degrees"));
                screendata->rotations.append(i18n("270 degrees"));
                screendata->supports_transformations = (cur_screen->rotations() != RandRScreen::Rotate0);
                if (screendata->supports_transformations) {
                    screendata->current_orientation_mask = cur_screen->proposedRotation();
                    switch (screendata->current_orientation_mask & RandRScreen::RotateMask) {
                        case RandRScreen::Rotate0:
                            screendata->current_rotation_index = ROTATION_0_DEGREES_INDEX;
                            break;
                        case RandRScreen::Rotate90:
                            screendata->current_rotation_index = ROTATION_90_DEGREES_INDEX;
                            break;
                        case RandRScreen::Rotate180:
                            screendata->current_rotation_index = ROTATION_180_DEGREES_INDEX;
                            break;
                        case RandRScreen::Rotate270:
                            screendata->current_rotation_index = ROTATION_270_DEGREES_INDEX;
                            break;
                        default:
                            // Shouldn't hit this one
                            Q_ASSERT(screendata->current_orientation_mask & RandRScreen::RotateMask);
                            screendata->current_rotation_index = ROTATION_0_DEGREES_INDEX;
                            break;
                    }
                    screendata->has_x_flip = (screendata->current_orientation_mask & RandRScreen::ReflectX);
                    screendata->has_y_flip = (screendata->current_orientation_mask & RandRScreen::ReflectY);
                }
                else {
                    screendata->has_x_flip = false;
                    screendata->has_y_flip = false;
                    screendata->current_rotation_index = ROTATION_0_DEGREES_INDEX;
                }
 
                // Determine if this display is primary and/or extended
                RROutput primaryoutput = XRRGetOutputPrimary(tqt_xdisplay(), DefaultRootWindow(tqt_xdisplay()));
                if (primaryoutput == randr_screen_info->outputs[i]->id) {
                    screendata->is_primary = false;
                }
                else {
                    screendata->is_primary = true;
                }
                screendata->is_extended = screen_active;
                if (!screendata->is_extended) {
                    screendata->is_primary = false;
                }
 
                // Get this screen's absolute position
                screendata->absolute_x_position = 0;
                screendata->absolute_y_position = 0;
                if (current_crtc) {
                    screendata->absolute_x_position = current_crtc->info->x;
                    screendata->absolute_y_position = current_crtc->info->y;
                }
 
                // Get this screen's current resolution
                screendata->current_x_pixel_count = cur_screen->pixelSize(screendata->current_resolution_index).width();
                screendata->current_y_pixel_count = cur_screen->pixelSize(screendata->current_resolution_index).height();
 
                // Get this screen's current gamma values
                // [FIXME]
                // This attempts to guess a gamma value based on the LUT settings at 50%
                // It may not always be 100% correct, or even anywhere close...
                // Essentially it "undoes" the LUT gamma calculation from xrandr
                // lut_gamma->green[i] = (pow(i/(size - 1), desired_gamma.green) * (size - 1) * 256);
                screendata->gamma_red = 2.2;
                screendata->gamma_green = 2.2;
                screendata->gamma_blue = 2.2;
                if (current_crtc) {
                    //int slot = 127;
                    int slot = 7;
                    int size = XRRGetCrtcGammaSize(randr_display, current_crtc->id);
                    if(size>0) {
                        XRRCrtcGamma *gammastruct = XRRGetCrtcGamma (randr_display, current_crtc->id);
                        screendata->gamma_red = log(gammastruct->red[slot]/((size-1.0)*256.0))/log(slot/(size-1.0));
                        screendata->gamma_green = log(gammastruct->green[slot]/((size-1.0)*256.0))/log(slot/(size-1.0));
                        screendata->gamma_blue = log(gammastruct->blue[slot]/((size-1.0)*256.0))/log(slot/(size-1.0));
                    }
                }
                // Round off the gamma to one decimal place
                screendata->gamma_red = floorf(screendata->gamma_red * 10 + 0.5) / 10;
                screendata->gamma_green = floorf(screendata->gamma_green * 10 + 0.5) / 10;
                screendata->gamma_blue = floorf(screendata->gamma_blue * 10 + 0.5) / 10;
 
                delete cur_screen;
            }
            else {
                // Fill in generic data for this disconnected output
                screendata->screenFriendlyName = screendata->screenFriendlyName + TQString(" (") + i18n("disconnected") + TQString(")");
                screendata->screen_connected = false;
 
                screendata->resolutions = i18n("Default");
                screendata->refresh_rates = i18n("Default");
                screendata->color_depths = i18n("Default");
                screendata->rotations = i18n("N/A");
 
                screendata->current_resolution_index = 0;
                screendata->current_refresh_rate_index = 0;
                screendata->current_color_depth_index = 0;
 
                screendata->gamma_red = 2.2;
                screendata->gamma_green = 2.2;
                screendata->gamma_blue = 2.2;
 
                screendata->current_rotation_index = ROTATION_0_DEGREES_INDEX;
                screendata->current_orientation_mask = 0;
                screendata->has_x_flip = false;
                screendata->has_y_flip = false;
                screendata->supports_transformations = false;
 
                screendata->is_primary = false;
                screendata->is_extended = false;
                screendata->absolute_x_position = 0;
                screendata->absolute_y_position = 0;
                screendata->current_x_pixel_count = 640;
                screendata->current_y_pixel_count = 480;
            }
 
            // Check for more screens...
            numberOfScreens++;
        }
 
        freeScreenInfoStructure(randr_screen_info);
    }
    else {
        screendata = new SingleScreenData;
        screenInfoArray.append(screendata);
 
        // Fill in a bunch of generic data
        screendata->screenFriendlyName = i18n("Default output on generic video card");
        screendata->generic_screen_detected = true;
        screendata->screen_connected = true;
 
        screendata->resolutions = i18n("Default");
        screendata->refresh_rates = i18n("Default");
        screendata->color_depths = i18n("Default");
        screendata->rotations = i18n("N/A");
 
        screendata->current_resolution_index = 0;
        screendata->current_refresh_rate_index = 0;
        screendata->current_color_depth_index = 0;
 
        screendata->gamma_red = 2.2;
        screendata->gamma_green = 2.2;
        screendata->gamma_blue = 2.2;
 
        screendata->current_rotation_index = ROTATION_0_DEGREES_INDEX;
        screendata->current_orientation_mask = 0;
        screendata->has_x_flip = false;
        screendata->has_y_flip = false;
        screendata->supports_transformations = false;
 
        screendata->is_primary = true;
        screendata->is_extended = true;
        screendata->absolute_x_position = 0;
        screendata->absolute_y_position = 0;
        screendata->current_x_pixel_count = 640;
        screendata->current_y_pixel_count = 480;
 
        numberOfScreens++;
    }
 
    bool primary_set = false;
    for ( screendata=screenInfoArray.first(); screendata; screendata=screenInfoArray.next() ) {
        if (screendata->is_primary) {
            primary_set = true;
            break;
        }
    }
    // If there is no primary monitor set, xrandr is probably not functioning correctly!
    Q_ASSERT(primary_set);
    if (!primary_set) {
        // [FIXME]
        // Set this on the real primary monitor only!
        screendata = screenInfoArray.at(0);
        screendata->is_primary = true;
    }
 
    return screenInfoArray;
}
 
TQString KRandrSimpleAPI::clearIccConfiguration() {
    // Clear ICC settings with XCalib
    TQString icc_command;
    FILE *pipe_xcalib;
    char xcalib_result[2048];
    int i;
    xcalib_result[0]=0;
 
    icc_command = TQString("xcalib -c");
    if ((pipe_xcalib = popen(icc_command.ascii(), "r")) == NULL)
    {
        printf("Xcalib pipe error [xcalib clear]\n");
    }
    else {
        if (fgets(xcalib_result, 2048, pipe_xcalib)) {
            pclose(pipe_xcalib);
            for (i=1;i<2048;i++) {
                if (xcalib_result[i] == 0) {
                    xcalib_result[i-1]=0;
                    i=2048;
                }
            }
            if (strlen(xcalib_result) > 2) {
                return xcalib_result;
            }
        }
        else {
            return "";
        }
    }
    return "";
}
 
ScreenInfo* KRandrSimpleAPI::read_screen_info (Display *display)
{
    return internal_read_screen_info(display);
}
 
int KRandrSimpleAPI::set_screen_size (ScreenInfo *screen_info)
{
    return internal_set_screen_size(screen_info);
}
 
void KRandrSimpleAPI::output_auto (ScreenInfo *screen_info, OutputInfo *output_info)
{
    internal_output_auto (screen_info, output_info);
}
 
void KRandrSimpleAPI::output_off(ScreenInfo *screen_info, OutputInfo *output)
{
    internal_output_off(screen_info, output);
}
 
CrtcInfo* KRandrSimpleAPI::auto_find_crtc (ScreenInfo *screen_info, OutputInfo *output_info)
{
    return internal_auto_find_crtc (screen_info, output_info);
}
 
XRRModeInfo *KRandrSimpleAPI::find_mode_by_xid (ScreenInfo *screen_info, RRMode mode_id)
{
    return internal_find_mode_by_xid (screen_info, mode_id);
}
 
int KRandrSimpleAPI::mode_height (XRRModeInfo *mode_info, Rotation rotation)
{
    return internal_mode_height (mode_info, rotation);
}
 
int KRandrSimpleAPI::mode_width (XRRModeInfo *mode_info, Rotation rotation)
{
    return internal_mode_width (mode_info, rotation);
}
 
int KRandrSimpleAPI::get_width_by_output_id (ScreenInfo *screen_info, RROutput output_id)
{
    return internal_get_width_by_output_id (screen_info, output_id);
}
 
int KRandrSimpleAPI::get_height_by_output_id (ScreenInfo *screen_info, RROutput output_id)
{
    return internal_get_height_by_output_id (screen_info, output_id);
}
 
char *KRandrSimpleAPI::get_output_name (ScreenInfo *screen_info, RROutput id)
{
    return internal_get_output_name (screen_info, id);
}
 
Status KRandrSimpleAPI::crtc_apply (CrtcInfo *crtc_info)
{
    return internal_crtc_apply (crtc_info);
}
 
Status KRandrSimpleAPI::crtc_disable (CrtcInfo *crtc)
{
    return internal_crtc_disable (crtc);
}
 
int KRandrSimpleAPI::main_low_apply (ScreenInfo *screen_info)
{
    return internal_main_low_apply (screen_info);
}
 
void KRandrSimpleAPI::set_primary_output (ScreenInfo *screen_info, RROutput output_id)
{
    internal_output_set_primary(screen_info, output_id);
}
 
bool KRandrSimpleAPI::kRandrHasRandr(void)
{
    return isValid();
}
 
const char *KRandrSimpleAPI::kRandrVersion(void)
{
    return "0.9.5";
}
 
const char *KRandrSimpleAPI::kRandrCopyright(void)
{
   return "LibKRandr 0.9.5 (C)2010 Timothy Pearson <kb9vqf@pearsoncomputing.net>. U.S.A.";
}
 
/* * * * * *
 
 Under this line (------) there's only a C wrapper for the KRandrSimpleAPI class
 
* * * * * */
const char *kRandrVersion(void)
{
  return KRandrSimpleAPI::kRandrVersion();
}
 
const char *kRandrCopyright(void)
{
  return KRandrSimpleAPI::kRandrCopyright();
}