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// systemtap grapher
// Copyright (C) 2009 Red Hat Inc.
//
// This file is part of systemtap, and is free software. You can
// redistribute it and/or modify it under the terms of the GNU General
// Public License (GPL); either version 2, or (at your option) any
// later version.
#ifndef SYSTEMTAP_GRAPH_HXX
#define SYSTEMTAP_GRAPH_HXX 1
#include <cairomm/context.h>
#include "GraphData.hxx"
#include "CairoWidget.hxx"
namespace systemtap
{
class Graph : public CairoWidget
{
public:
friend class GraphWidget;
Graph(double x = 0.0, double y = 0.0);
virtual void draw(Cairo::RefPtr<Cairo::Context> cr);
virtual bool containsPoint(double x, double y);
double getLineWidth() { return _lineWidth; }
void setLineWidth(double lineWidth) { _lineWidth = lineWidth; }
bool getAutoScaling() const { return _autoScaling; }
void setAutoScaling(bool val) { _autoScaling = val; }
void addGraphData(std::tr1::shared_ptr<GraphDataBase> data);
void getExtents(int64_t& left, int64_t& right, double& top, double& bottom)
const;
void setExtents(int64_t left, int64_t right, double top, double bottom);
// extents of the whole graph area
double _width;
double _height;
// Position, extents of the graph
double _graphX;
double _graphY;
double _graphWidth;
double _graphHeight;
double _lineWidth;
bool _autoScaling;
bool _autoScrolling;
double _zoomFactor;
double _xOffset;
double _yOffset;
std::tr1::shared_ptr<CairoPlayButton> _playButton;
int64_t _timeBase;
GraphDataList& getDatasets() { return _datasets; }
int64_t getTimeAtPoint(double x);
void window2GraphCoords(double x, double y, double& xgraph, double& ygraph);
static void setCurrentTime(int64_t time) { _currentTime = time; }
/*
* universal horizontal factor
*/
double getHorizontalScale()
{
return _graphWidth / static_cast<double>(_right - _left);
}
protected:
GraphDataList _datasets;
int64_t _left;
int64_t _right;
double _top;
double _bottom;
static int64_t _currentTime;
};
}
#endif
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