diff options
Diffstat (limited to 'grapher/GraphStyle.cxx')
| -rw-r--r-- | grapher/GraphStyle.cxx | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/grapher/GraphStyle.cxx b/grapher/GraphStyle.cxx index 887ed55f..55fc73f4 100644 --- a/grapher/GraphStyle.cxx +++ b/grapher/GraphStyle.cxx @@ -8,6 +8,9 @@ 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, @@ -41,6 +44,29 @@ namespace systemtap } } + 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) + return -1; + int64_t left, right; + double top, bottom; + graph->getExtents(left, right, top, bottom); + double t = graph->getTimeAtPoint(x); + TimeListPair range + = equal_range(graphData->times.begin(), graphData->times.end(), t); + 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, |