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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.
#include "GraphStyle.hxx"
#include "GraphData.hxx"
#include "Graph.hxx"
namespace systemtap
{
using namespace std;
using namespace tr1;
typedef pair<GraphDataBase::TimeList::iterator,
GraphDataBase::TimeList::iterator> TimeListPair;
GraphStyleBar GraphStyleBar::instance;
void GraphStyleBar::draw(std::tr1::shared_ptr<GraphDataBase> graphData,
Graph* graph, Cairo::RefPtr<Cairo::Context> cr)
{
shared_ptr<GraphData<double> > realData
= dynamic_pointer_cast<GraphData<double> >(graphData);
if (!realData)
return;
int64_t left, right;
double top, bottom;
graph->getExtents(left, right, top, bottom);
double horizScale = graph->getHorizontalScale();
cr->save();
double lineWidth = cr->get_line_width();
cr->translate(graph->_graphWidth, 0.0);
cr->scale(horizScale, 1.0);
cr->translate(left - right, 0.0);
cr->set_line_width(lineWidth / horizScale);
cr->set_source_rgba(graphData->color[0], graphData->color[1],
graphData->color[2], 1.0);
GraphDataBase::TimeList::iterator lower
= lower_bound(graphData->times.begin(), graphData->times.end(), left);
GraphDataBase::TimeList::iterator upper
= upper_bound(graphData->times.begin(), graphData->times.end(), right);
for (GraphDataBase::TimeList::iterator ditr = lower, de = upper;
ditr != de;
++ditr)
{
size_t dataIndex = ditr - graphData->times.begin();
cr->move_to((*ditr - left), 0);
cr->line_to((*ditr - left),
realData->data[dataIndex] * graph->_graphHeight
/ graphData->scale);
cr->stroke();
}
cr->restore();
}
ssize_t GraphStyleBar::dataIndexAtPoint(double x, double y,
shared_ptr<GraphDataBase> graphData,
shared_ptr<Graph> graph)
{
shared_ptr<GraphData<double> > realData
= dynamic_pointer_cast<GraphData<double> >(graphData);
if (!realData || graphData->times.empty())
return -1;
int64_t left, right;
double top, bottom;
graph->getExtents(left, right, top, bottom);
int64_t t = graph->getTimeAtPoint(x);
TimeListPair range
= equal_range(graphData->times.begin(), graphData->times.end(), t);
if (range.first == graphData->times.end())
return -1;
size_t dataIndex = distance(graphData->times.begin(), range.first);
double val = realData->data[dataIndex];
double ycoord = val * graph->_graphHeight / graphData->scale;
if (y >= graph->_yOffset + graph->_graphHeight - ycoord)
return static_cast<ssize_t>(dataIndex);
else
return -1;
}
GraphStyleDot GraphStyleDot::instance;
void GraphStyleDot::draw(std::tr1::shared_ptr<GraphDataBase> graphData,
Graph* graph, Cairo::RefPtr<Cairo::Context> cr)
{
shared_ptr<GraphData<double> > realData
= dynamic_pointer_cast<GraphData<double> >(graphData);
if (!realData)
return;
int64_t left, right;
double top, bottom;
graph->getExtents(left, right, top, bottom);
double horizScale = graph->getHorizontalScale();;
GraphDataBase::TimeList::iterator lower
= lower_bound(graphData->times.begin(), graphData->times.end(), left);
GraphDataBase::TimeList::iterator upper
= upper_bound(graphData->times.begin(), graphData->times.end(), right);
cr->translate(graph->_graphWidth, 0.0);
cr->scale(horizScale, 1.0);
cr->translate(left - right, 0.0);
cr->set_source_rgba(graphData->color[0], graphData->color[1],
graphData->color[2], 1.0);
for (GraphDataBase::TimeList::iterator ditr = lower, de = upper;
ditr != de;
++ditr)
{
size_t dataIndex = ditr - graphData->times.begin();
// XXX Fix unequal scale in x, y
cr->arc((*ditr - left),
(realData->data[dataIndex]
* graph->_graphHeight / graphData->scale),
(graph->_lineWidth / (2.0 * horizScale)), 0.0, M_PI * 2.0);
cr->fill();
}
cr->restore();
}
GraphStyleEvent GraphStyleEvent::instance;
void GraphStyleEvent::draw(std::tr1::shared_ptr<GraphDataBase> graphData,
Graph* graph, Cairo::RefPtr<Cairo::Context> cr)
{
shared_ptr<GraphData<string> > stringData
= dynamic_pointer_cast<GraphData<string> >(graphData);
if (!stringData)
return;
int64_t left, right;
double top, bottom;
graph->getExtents(left, right, top, bottom);
double horizScale = graph->getHorizontalScale();
double eventHeight = graph->_graphHeight * (graphData->scale / 100.0);
cr->save();
cr->set_line_width(3 * graph->_lineWidth);
cr->set_source_rgba(graphData->color[0], graphData->color[1],
graphData->color[2], .33);
cr->move_to(0, eventHeight);
cr->line_to(graph->_graphWidth, eventHeight);
cr->stroke();
cr->restore();
cr->save();
// Global translation for user scaling
cr->translate(graph->_graphWidth, 0.0);
cr->scale(horizScale, 1.0);
cr->translate(left - right, 0.0);
GraphDataBase::TimeList::iterator lower
= lower_bound(graphData->times.begin(), graphData->times.end(), left);
GraphDataBase::TimeList::iterator upper
= upper_bound(graphData->times.begin(), graphData->times.end(), right);
for (GraphDataBase::TimeList::iterator ditr = lower, de = upper;
ditr != de;
++ditr)
{
// size_t dataIndex = ditr - graphData->times.begin();
double eventHeight = graph->_graphHeight * (graphData->scale / 100.0);
cr->save();
cr->set_source_rgba(graphData->color[0], graphData->color[1],
graphData->color[2], 1.0);
// Do cairo transformations here instead of our own math?
cr->rectangle((*ditr - left) - (1.5 * graph->_lineWidth / horizScale),
eventHeight - 1.5 * graph->_lineWidth,
3.0 * (graph->_lineWidth / horizScale),
3.0 * graph->_lineWidth);
cr->fill();
cr->restore();
}
cr->restore();
}
ssize_t GraphStyleEvent::dataIndexAtPoint(double x, double y,
shared_ptr<GraphDataBase> graphData,
shared_ptr<Graph> graph)
{
shared_ptr<GraphData<string> > stringData
= dynamic_pointer_cast<GraphData<string> >(graphData);
if (!stringData || graphData->times.empty())
return -1;
int64_t left, right;
double top, bottom;
graph->getExtents(left, right, top, bottom);
double horizScale = graph->getHorizontalScale();
double eventHeight = graph->_graphHeight * (graphData->scale / 100.0);
GraphDataBase::TimeList::iterator lower
= lower_bound(graphData->times.begin(), graphData->times.end(), left);
GraphDataBase::TimeList::iterator upper
= upper_bound(graphData->times.begin(), graphData->times.end(), right);
// easier to transform x,y into graph coordinates
double xgraph, ygraph;
graph->window2GraphCoords(x, y, xgraph, ygraph);
double yrect = eventHeight - 1.5 * graph->_lineWidth;
double rectWidth = 3 * graph->_lineWidth;
for (GraphDataBase::TimeList::iterator ditr = lower, de = upper;
ditr != de;
++ditr)
{
double xrect = ((*ditr - right) * horizScale + graph->_graphWidth
- .5 * rectWidth);
if (xrect <= xgraph && xgraph < xrect + rectWidth
&& yrect <= ygraph && ygraph < yrect + 3.0 * graph->_lineWidth)
return static_cast<ssize_t>(distance(graphData->times.begin(), ditr));
}
return -1;
}
}
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