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/***************************************************************************
xvidextwrap.cpp - description
-------------------
begin : Sat Jan 5 2002
copyright : (C) 2002 by Michael v.Ostheim
email : [email protected]
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include <X11/Xos.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/extensions/xf86vmode.h>
#include <stdlib.h>
#include <iostream>
#include <fstream>
#include <vector>
#include <string>
#include <config.h>
#ifdef HAVE_SSTREAM
#include <sstream>
#else
#include <strstream.h>
#define istringstream istrstream
#endif
#include <kdebug.h>
#include "xf86configpath.h"
#include "xvidextwrap.h"
using namespace std;
XVidExtWrap::XVidExtWrap(bool* OK, const char* displayname) {
if ((dpy = XOpenDisplay(displayname))) {
screen = DefaultScreen(dpy);
setGammaLimits(0.1, 10.0);
*OK = true;
}
else {
kdDebug() << "KGamma: unable to open display " << displayname << endl;
*OK = false;
}
}
XVidExtWrap::~XVidExtWrap() {
if (dpy) XCloseDisplay(dpy);
}
int XVidExtWrap::_DefaultScreen() {
return DefaultScreen(dpy);
}
/** We have to parse XF86Config to get the number of screens, because */
/** ScreenCount() from X11/Xlib.h does not count correctly with xinerama */
int XVidExtWrap::_ScreenCount() {
int count = 0;
bool section = false;
XF86ConfigPath Path;
std::ifstream in( Path.get() );
if ( in.is_open() ) {
std::string s, buf;
std::vector<string> words;
while (getline(in, s,'\n')) {
words.clear();
istringstream ss(s.c_str());
while (ss >> buf) words.push_back(buf); // Split "s" into words
if ( !words.empty() ) {
if ( words[0] == "Section" && words.size() > 1 ) {
if ( words[1] == "\"ServerLayout\"" ) section = true;
}
else if ( words[0] == "EndSection" )
section = false;
if ( section && words[0] == "Screen" ) ++count;
}
} //end while
in.close();
}
if ( !count ) count = 1; //If failed,fill count with a valid value;
return( count );
}
const char* XVidExtWrap::DisplayName() {
return DisplayString(dpy);
}
void XVidExtWrap::setGamma(int channel, float gam, bool* OK) {
XF86VidModeGamma gamma;
if ( gam >= mingamma && gam <= maxgamma ) {
if (!XF86VidModeGetGamma(dpy, screen, &gamma)) {
kdDebug() << "KGamma: Unable to query gamma correction" << endl;
if ( OK ) *OK = false;
}
else {
switch (channel) {
case Value:
gamma.red = gam;
gamma.green = gam;
gamma.blue = gam; break;
case Red:
gamma.red = gam; break;
case Green:
gamma.green = gam; break;
case Blue:
gamma.blue = gam;
};
if (!XF86VidModeSetGamma(dpy, screen, &gamma)) {
kdDebug() << "KGamma: Unable to set gamma correction" << endl;
if ( OK ) *OK = false;
}
else {
XFlush(dpy);
if ( OK ) *OK = true;
}
}
}
}
float XVidExtWrap::getGamma(int channel, bool* OK) {
XF86VidModeGamma gamma;
float gam = 0;
if (!XF86VidModeGetGamma(dpy, screen, &gamma)) {
kdDebug() << "KGamma: Unable to query gamma correction" << endl;
if ( OK ) *OK = false;
}
else {
switch (channel) {
case Value:
gam = gamma.red; break;
case Red:
gam = gamma.red; break;
case Green:
gam = gamma.green; break;
case Blue:
gam = gamma.blue;
};
if ( OK ) *OK = true;
}
return(gam);
}
void XVidExtWrap::setGammaLimits( float min, float max ) {
mingamma = (min < 0.1) ? 0.1 : min;
maxgamma = (max > 10.0) ? 10.0 : max;
}
#ifdef istringstream
#undef istringstream
#endif
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