1 files changed, 163 insertions, 0 deletions
diff --git a/kpf/src/BandwidthGraph.h b/kpf/src/BandwidthGraph.h
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+/*
+  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.
+*/
+
+#ifndef KPF_BANDWIDTH_GRAPH_H
+#define KPF_BANDWIDTH_GRAPH_H
+
+#include <qwidget.h>
+#include <qmemarray.h>
+#include <qpixmap.h>
+#include <qrect.h>
+
+class QPainter;
+
+namespace KPF
+{
+  class WebServer;
+
+  /**
+   * Draws a graph of the bandwidth usage of a WebServer over time.
+   * May also displays an overlayed icon to show the status of a WebServer,
+   * i.e. whether it is active (no icon,) paused or in contention for a port.
+   */
+  class BandwidthGraph : public QWidget
+  {
+    Q_OBJECT
+
+    public:
+
+      enum OverlaySelect
+      {
+        UseOverlays,
+        NoOverlays
+      };
+
+      /**
+       * @param server WebServer to monitor.
+       * @param overlaySelect if UseOverlays, draw overlay icons to reflect
+       * server status.
+       */
+      BandwidthGraph
+        (
+         WebServer    * server,
+         OverlaySelect  overlaySelect,
+         QWidget      * parent = 0,
+         const char   * name = 0
+        );
+
+      virtual ~BandwidthGraph();
+
+      /**
+       * Set the tooltip showing shared directory name and port
+       */
+      void setTooltip();
+
+      /**
+       * Overridden to provide reasonable default size and shape.
+       */
+      virtual QSize sizeHint() const;
+
+      /**
+       * Overridden to provide reasonable minimum size and shape.
+       */
+      virtual QSize minimumSizeHint() const;
+
+      /**
+       * @return the WebServer object given on construction.
+       */
+      WebServer * server();
+
+    protected slots:
+
+      /**
+       * Connected to associated WebServer to receive notification of output.
+       */
+      void slotOutput(ulong);
+
+      /**
+       * Connected to associated WebServer to receive notification of port
+       * contention.
+       */
+      void slotServerContentionChange(bool);
+
+      /**
+       * Connected to associated WebServer to receive notification of pause
+       * or unpause.
+       */
+      void slotServerPauseChange(bool);
+
+    protected:
+
+      /**
+       * Overridden to provide graph drawing.
+       */
+      virtual void paintEvent(QPaintEvent *);
+
+      /**
+       * Overridden to assist graph drawing.
+       */
+      virtual void resizeEvent(QResizeEvent *);
+
+      /**
+       * Draw overlay icons to reflect status of associated WebServer.
+       */
+      virtual void drawOverlays(QPainter &);
+
+      /**
+       * Provides a rectangle in which to draw the graph itself.
+       */
+      virtual QRect contentsRect() const;
+
+      /**
+       * Called when the status of the associated WebServer changes.
+       */
+      virtual void updateOverlayPixmap();
+
+    signals:
+
+      /**
+       * Emitted when the maximum displayed value has changed.
+       */
+      void maximumChanged(ulong);
+
+    private:
+
+      void updateContents();
+
+      QMemArray<ulong> history_;
+
+      WebServer * server_;
+
+      QPixmap buffer_, bgPix_;
+
+      ulong max_;
+
+      OverlaySelect overlaySelect_;
+
+      QPixmap overlayPixmap_;
+  };
+
+} // End namespace KPF
+
+#endif
+// vim:ts=2:sw=2:tw=78:et