1 files changed, 335 insertions, 0 deletions
diff --git a/kpf/src/BandwidthGraph.cpp b/kpf/src/BandwidthGraph.cpp
new file mode 100644
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--- /dev/null
+++ b/kpf/src/BandwidthGraph.cpp
@@ -0,0 +1,335 @@
+/*
+  KPF - Public fileserver for KDE
+
+  Copyright 2001 Rik Hemsley (rikkus) <[email protected]>
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to
+  deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+  AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#include <qdrawutil.h>
+#include <qpainter.h>
+#include <qtooltip.h>
+
+#include <klocale.h>
+#include <kiconloader.h>
+#include <kiconeffect.h>
+
+#include "Defines.h"
+#include "Utils.h"
+#include "BandwidthGraph.h"
+#include "WebServer.h"
+
+namespace KPF
+{
+  BandwidthGraph::BandwidthGraph
+    (
+     WebServer      * server,
+     OverlaySelect    overlaySelect,
+     QWidget        * parent,
+     const char     * name
+    )
+    : QWidget       (parent, name, WRepaintNoErase),
+      server_       (server),
+      max_          (0L),
+      overlaySelect_  (overlaySelect)
+  {
+    setBackgroundOrigin(AncestorOrigin);
+    history_.resize(width());
+    history_.fill(0L);
+
+    connect
+      (
+       server_,
+       SIGNAL(wholeServerOutput(ulong)),
+       SLOT(slotOutput(ulong))
+      );
+
+    if (UseOverlays == overlaySelect_)
+    {
+      connect
+        (
+         server_,
+         SIGNAL(contentionChange(bool)), this,
+         SLOT(slotServerContentionChange(bool))
+        );
+
+      connect
+        (
+         server_,
+         SIGNAL(pauseChange(bool)), this,
+         SLOT(slotServerPauseChange(bool))
+        );
+    }
+
+    setTooltip();
+  }
+
+  BandwidthGraph::~BandwidthGraph()
+  {
+    // Empty.
+  }
+
+    void
+  BandwidthGraph::setTooltip()
+  {
+    QToolTip::add(this, i18n( "%1 on port %2" )
+            .arg( server_->root() ).arg( server_->listenPort() ) );
+  }
+
+    QRect
+  BandwidthGraph::contentsRect() const
+  {
+    return QRect(1, 1, width() - 2, height() - 2);
+  }
+
+    void
+  BandwidthGraph::updateContents()
+  {
+    QRect r(contentsRect());
+
+    uint w = r.width();
+    uint h = r.height();
+    
+    buffer_.fill(this, 0, 0);
+
+    QPainter p(&buffer_);
+
+    p.drawPixmap( ( width()-bgPix_.width() )/2, 
+            ( height()-bgPix_.height() )/2, bgPix_ );
+
+    p.setPen(colorGroup().dark());
+
+    for (uint i = 0; i < history_.size(); i++)
+    {
+      ulong l = history_[i];
+
+      if (0 != l)
+      {
+        uint barLength =
+          static_cast<uint>(l / float(max_) * h);
+
+        p.drawLine(i + 1, h, i + 1, h - barLength);
+      }
+    }
+
+    drawOverlays(p);
+
+    update();
+  }
+
+    void
+  BandwidthGraph::paintEvent(QPaintEvent * e)
+  {
+    bitBlt(this, e->rect().topLeft(), &buffer_, e->rect());
+  }
+
+    void
+  BandwidthGraph::resizeEvent(QResizeEvent *)
+  {
+    buffer_.resize(size());
+
+    if ( width() > 48 )
+      bgPix_ = KGlobal::iconLoader()->loadIcon( "kpf", KIcon::Panel, 48 );
+    else if ( width() > 32 )
+      bgPix_ = KGlobal::iconLoader()->loadIcon( "kpf", KIcon::Panel, 32 );
+    else if ( width() > 16 )
+      bgPix_ = KGlobal::iconLoader()->loadIcon( "kpf", KIcon::Panel, 16 );
+    else
+      bgPix_.fill( this, QPoint( 0, 0 ) );
+
+    KIconEffect::semiTransparent( bgPix_ );
+
+    if (width() < 2)
+    {
+      // We have 0 space. Make history 0 size.
+      history_ = QMemArray<ulong>();
+      return;
+    }
+
+    uint w = width() - 2;
+
+    if (w < history_.size())
+    {
+      QMemArray<ulong> newHistory(w);
+
+      uint sizeDiff = history_.size() - w;
+
+      for (uint i = sizeDiff; i < history_.size(); i++)
+        newHistory[i - sizeDiff] = history_[i];
+
+      history_ = newHistory;
+    }
+    else if (w > history_.size())
+    {
+      QMemArray<ulong> newHistory(w);
+
+      uint sizeDiff = w - history_.size();
+
+      for (uint i = 0; i < sizeDiff; i++)
+      {
+        newHistory[i] = 0L;
+      }
+
+      for (uint i = 0; i < history_.size(); i++)
+        newHistory[sizeDiff + i] = history_[i];
+
+      history_ = newHistory;
+    }
+    
+    updateContents();
+  }
+
+    void
+  BandwidthGraph::slotOutput(ulong l)
+  {
+    QRect r(contentsRect());
+
+    uint w = r.width();
+    uint h = r.height();
+
+    if (0 == w || 0 == h)
+      return;
+
+    ulong oldMax = max_;
+
+    max_ = 0L;
+
+    if (history_.size() != w)
+      return;
+
+    for (uint i = 1; i < w; i++)
+    {
+      history_[i - 1] = history_[i];
+      max_ = max(history_[i], max_);
+    }
+
+    history_[w - 1] = l;
+    max_ = max(l, max_);
+
+    if (max_ != oldMax)
+      emit(maximumChanged(max_));
+
+    updateContents();
+  }
+
+    void
+  BandwidthGraph::drawOverlays(QPainter & p)
+  {
+    if (NoOverlays == overlaySelect_)
+      return;
+
+    if (!overlayPixmap_.isNull())
+    {
+      p.drawPixmap(3, 3, overlayPixmap_);
+    }
+
+    if (width() < 32 || height() < 32)
+      return;
+
+    if (overlayPixmap_.isNull())
+    {
+      QString maxString;
+
+      QString bs(i18n("%1 b/s"));
+      QString kbs(i18n("%1 kb/s"));
+      QString mbs(i18n("%1 Mb/s"));
+
+      if (max_ > 1024)
+        if (max_ > 1024 * 1024)
+          maxString = mbs.arg(max_ / (1024 * 1024));
+        else
+          maxString = kbs.arg(max_ / 1024);
+      else if ( max_ > 0 )
+        maxString = bs.arg(max_);
+      else
+        maxString = i18n( "Idle" );
+
+      p.setPen(Qt::white);
+
+      p.drawText
+        (
+         4,
+         4 + fontMetrics().ascent(),
+         maxString
+        );
+
+      p.setPen(Qt::black);
+
+      p.drawText
+        (
+         3,
+         3 + fontMetrics().ascent(),
+         maxString
+        );
+    }
+  }
+
+    QSize
+  BandwidthGraph::sizeHint() const
+  {
+    return QSize(32, 32);
+  }
+
+    QSize
+  BandwidthGraph::minimumSizeHint() const
+  {
+    return QSize(12, 12);
+  }
+
+    WebServer *
+  BandwidthGraph::server()
+  {
+    return server_;
+  }
+
+    void
+  BandwidthGraph::slotServerContentionChange(bool)
+  {
+    updateOverlayPixmap();
+  }
+
+    void
+  BandwidthGraph::slotServerPauseChange(bool)
+  {
+    updateOverlayPixmap();
+  }
+
+    void
+  BandwidthGraph::updateOverlayPixmap()
+  {
+   if (server_->paused())
+    {
+      overlayPixmap_ = SmallIcon("player_pause");
+    }
+    else
+    {
+      if (server_->portContention())
+      {
+        overlayPixmap_ = SmallIcon("connect_creating");
+      }
+      else
+      {
+        overlayPixmap_ = QPixmap();
+      }
+    }
+  }
+
+} // End namespace KPF
+
+#include "BandwidthGraph.moc"
+// vim:ts=2:sw=2:tw=78:et