1 files changed, 74 insertions, 0 deletions
diff --git a/superkaramba/src/graph.cpp b/superkaramba/src/graph.cpp
new file mode 100644
index 0000000..c028aea
--- /dev/null
+++ b/superkaramba/src/graph.cpp
@@ -0,0 +1,74 @@
+/***************************************************************************
+ *   Copyright (C) 2003 by Hans Karlsson                                   *
+ *   karlsson.h@home.se                                                      *
+ *                                                                         *
+ *   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 "graph.h"
+#include <qstring.h>
+
+Graph::Graph(karamba* k, int x, int y, int w, int h, int nbrPts):
+  Meter(k, x, y, w, h), lastValue(0)
+{
+
+    nbrPoints = (nbrPts==0)? 50:nbrPts ;
+    ptPtr = 0;
+    values = new int[nbrPoints];
+    for(int i = 0; i < nbrPoints; i++)
+        values[i] = 0;
+    minValue = 0;
+    maxValue = 100;
+}
+
+Graph::~Graph()
+{
+    delete[] values;
+}
+
+void Graph::setValue( long v)
+{
+    if( v > maxValue)
+    {
+        // maxValue = v;
+        v = maxValue;
+    }
+    if( v < minValue)
+    {
+        //minValue = v;
+        v = minValue;
+    }
+    lastValue = v;
+    values[ptPtr] = (int) (v / (maxValue + 0.0001) * getHeight());
+    ptPtr = (ptPtr + 1) % nbrPoints;
+}
+
+void Graph::setValue( QString v )
+{
+  setValue((long)(v.toDouble() + 0.5));
+}
+
+void Graph::mUpdate(QPainter *p)
+{
+  if (hidden == 0)
+  {
+    double step = (getWidth() / (nbrPoints-1.001));
+    double xPos = 0;
+    double nextXPos = 0;
+    p->setPen(color);
+    for (int i = 0; i < nbrPoints - 1 ; i ++)
+    {
+      nextXPos = xPos + step;
+      p->drawLine(getX() + (int)xPos, getY()+getHeight() -
+                    (int) values[(ptPtr+i) % nbrPoints] ,
+                  getX() + (int)nextXPos, getY()+getHeight() -
+                    (int) values[(ptPtr + i +1) % nbrPoints] );
+      xPos = nextXPos;
+    }
+  }
+}
+
+#include "graph.moc"