From d7b68bdcfad0ee98f755c0b76e720a2e30cd57c6 Mon Sep 17 00:00:00 2001
From: mickeyl <mickeyl>
Date: Sat, 03 May 2003 18:26:18 +0000
Subject: start work on graph window

---
(limited to 'noncore/net/wellenreiter/gui/graphwindow.cpp')

diff --git a/noncore/net/wellenreiter/gui/graphwindow.cpp b/noncore/net/wellenreiter/gui/graphwindow.cpp
new file mode 100644
index 0000000..c620fe2
--- a/dev/null
+++ b/noncore/net/wellenreiter/gui/graphwindow.cpp
@@ -0,0 +1,159 @@
+/**********************************************************************
+** Copyright (C) 2002 Michael 'Mickey' Lauer.  All rights reserved.
+**
+** This file is part of Opie Environment.
+**
+** This file may be distributed and/or modified under the terms of the
+** GNU General Public License version 2 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.
+**
+** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+**
+**********************************************************************/
+
+#include "graphwindow.h"
+
+#include <qpainter.h>
+#include <qpixmap.h>
+#include <qtimer.h>
+
+MFrequencySpectrum::MFrequencySpectrum( int channels, QWidget* parent, const char* name, WFlags f)
+                   :QWidget( parent, name,f ), _channels( channels )
+{
+    _values = new int[_channels];
+    _dirty = new bool[_channels];
+    for ( int i = 0; i < channels; ++i )
+    {   _values[i] = 0;
+        _dirty[i] = true;
+    }
+
+    // we draw everything alone
+    setBackgroundMode( QWidget::NoBackground );
+}
+
+
+void MFrequencySpectrum::drawLine( QPainter* p, int x, int y, int width, const QColor& c )
+{
+    p->setPen( c.light() );
+    p->drawPoint( x++, y );
+    p->setPen( c );
+    p->drawLine( x, y, x+width-2, y );
+    p->setPen( c.dark() );
+    p->drawPoint( x+width-1, y );
+}
+
+
+void MFrequencySpectrum::drawBar( QPainter* p, int x, int y, int width, int height, int maxheight )
+{
+/*    int h1 = 133; int h2 = 0;
+    int s1 = 200; int s2 = 255;
+    int v1 = 140; int v2 = 255; */
+
+    int h1 = 196; int h2 = 194;
+    int s1 = 85; int s2 = 15;
+    int v1 = 95; int v2 = 237;
+
+    QColor c( 120, 60, 200 );
+    for ( int i = 0; i < height; ++i )
+    {
+        int h = (h2-h1)*i/maxheight + h1;
+        int s = (s2-s1)*i/maxheight + s1;
+        int v = (v2-v1)*i/maxheight + v1;
+        drawLine( p, x, y-i, width, QColor( h,s,v, QColor::Hsv ) );
+    }
+
+    /*for ( int i = height; i < maxheight; ++i )
+        drawLine( p, x, y-i, width, QColor( 47, 68, 76 ) );*/
+
+}
+
+
+void MFrequencySpectrum::paintEvent( QPaintEvent* e )
+{
+    QPixmap pm( size() );
+    QPainter p;
+    p.begin( &pm );
+    p.drawTiledPixmap( 0, 0, size().width(), size().height(), QPixmap( (const char**) &background ) );
+
+    int xmargin = 5;
+    int ymargin = 2;
+    int y = size().height() - 2 * ymargin;
+    int x = 0;
+    int width = ( size().width() - 2 * xmargin ) / _channels;
+
+    for ( int i = 0; i < _channels; ++i )
+    {
+        if ( _dirty[i] )
+        {
+            drawBar( &p, xmargin + x, y - ymargin, width-3, _values[i]*y/100, y );
+            _dirty[i] = false;
+        }
+        x+= width;
+    }
+
+    p.end();
+    bitBlt( this, 0, 0, &pm );
+}
+
+
+Legende::Legende( int channels, QWidget* parent, const char* name, WFlags f )
+        :QFrame( parent, name, f ), _channels( channels )
+{
+    setLineWidth( 2 );
+    setFrameStyle( Panel + Sunken );
+    setFixedHeight( 16 );
+
+}
+
+
+void Legende::drawContents( QPainter* p )
+{
+    int xmargin = 5;
+    int ymargin = 2;
+    int x = 0;
+    int width = ( contentsRect().width() - 2 * xmargin ) / _channels;
+
+    for ( int i = 0; i < _channels; ++i )
+        p->drawText( xmargin + (width*i), 12, QString().sprintf( "%02d", i+1 ) );
+}
+
+
+MGraphWindow::MGraphWindow( QWidget* parent, const char* name, WFlags f )
+             :QVBox( parent, name, f )
+{
+    spectrum = new MFrequencySpectrum( 14, this );
+    legende = new Legende( 14, this );
+    startTimer( 50 );
+
+    //testGraph();
+
+};
+
+
+void MGraphWindow::testGraph()
+{
+    static int i = 0;
+    spectrum->setValue( i++, 100 );
+    if ( i == 14 ) i = 0;
+    QTimer::singleShot( 2000, this, SLOT( testGraph() ) );
+
+}
+
+
+void MGraphWindow::timerEvent( QTimerEvent* e )
+{
+    for ( int i = 0; i < 14; i++ )
+    {
+        spectrum->decrease( i, 4 );
+    }
+    spectrum->repaint();
+}
+
+
+void MGraphWindow::traffic( int channel, int signal )
+{
+    spectrum->setValue( channel-1, signal );
+}
+
--
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