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164 lines
4.0 KiB
164 lines
4.0 KiB
/*
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KPF - Public fileserver for KDE
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Copyright 2001 Rik Hemsley (rikkus) <rik@kde.org>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to
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deal in the Software without restriction, including without limitation the
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rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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sell copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef KPF_BANDWIDTH_GRAPH_H
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#define KPF_BANDWIDTH_GRAPH_H
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#include <tqwidget.h>
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#include <tqmemarray.h>
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#include <tqpixmap.h>
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#include <tqrect.h>
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class TQPainter;
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namespace KPF
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{
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class WebServer;
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/**
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* Draws a graph of the bandwidth usage of a WebServer over time.
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* May also displays an overlayed icon to show the status of a WebServer,
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* i.e. whether it is active (no icon,) paused or in contention for a port.
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*/
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class BandwidthGraph : public TQWidget
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{
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Q_OBJECT
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public:
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enum OverlaySelect
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{
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UseOverlays,
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NoOverlays
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};
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/**
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* @param server WebServer to monitor.
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* @param overlaySelect if UseOverlays, draw overlay icons to reflect
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* server status.
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*/
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BandwidthGraph
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(
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WebServer * server,
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OverlaySelect overlaySelect,
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TQWidget * parent = 0,
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const char * name = 0
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);
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virtual ~BandwidthGraph();
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/**
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* Set the tooltip showing shared directory name and port
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*/
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void setTooltip();
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/**
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* Overridden to provide reasonable default size and shape.
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*/
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virtual TQSize sizeHint() const;
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/**
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* Overridden to provide reasonable minimum size and shape.
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*/
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virtual TQSize minimumSizeHint() const;
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/**
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* @return the WebServer object given on construction.
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*/
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WebServer * server();
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protected slots:
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/**
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* Connected to associated WebServer to receive notification of output.
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*/
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void slotOutput(ulong);
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/**
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* Connected to associated WebServer to receive notification of port
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* contention.
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*/
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void slotServerContentionChange(bool);
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/**
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* Connected to associated WebServer to receive notification of pause
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* or unpause.
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*/
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void slotServerPauseChange(bool);
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protected:
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/**
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* Overridden to provide graph drawing.
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*/
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virtual void paintEvent(TQPaintEvent *);
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/**
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* Overridden to assist graph drawing.
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*/
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virtual void resizeEvent(TQResizeEvent *);
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/**
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* Draw overlay icons to reflect status of associated WebServer.
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*/
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virtual void drawOverlays(TQPainter &);
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/**
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* Provides a rectangle in which to draw the graph itself.
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*/
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virtual TQRect contentsRect() const;
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/**
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* Called when the status of the associated WebServer changes.
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*/
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virtual void updateOverlayPixmap();
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signals:
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/**
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* Emitted when the maximum displayed value has changed.
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*/
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void maximumChanged(ulong);
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private:
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void updateContents();
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TQMemArray<ulong> history_;
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WebServer * server_;
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TQPixmap buffer_, bgPix_;
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ulong max_;
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OverlaySelect overlaySelect_;
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TQPixmap overlayPixmap_;
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};
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} // End namespace KPF
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#endif
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