Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegraphics@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 170 insertions, 0 deletions

diff --git a/kgamma/kcmkgamma/xvidextwrap.cpp b/kgamma/kcmkgamma/xvidextwrap.cpp
new file mode 100644
index 00000000..9d8136d9
--- /dev/null
+++ b/kgamma/kcmkgamma/xvidextwrap.cpp
@@ -0,0 +1,170 @@
+/***************************************************************************
+                          xvidextwrap.cpp  -  description
+                             -------------------
+    begin                : Sat Jan 5 2002
+    copyright            : (C) 2002 by Michael v.Ostheim
+    email                : MvOstheim@web.de
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   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