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A silly change, but this works better with other tools, like git
diff. I should have started the C++ files this way.
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Also, add a sigc signal for broadcasting data set changes.
* grapher/GraphData.hxx (GraphDataList) new typedef
(getGraphData, graphDataSignal): new functions
* grapher/Graph.hxx (DatasetList): remove typedef in favor of
systemtap::GraphDataList
* grapher/GraphWidget.cxx (GraphWidget, onGraphDataChanged): Use
graphDataSignal to notice new data sets that need to be added. Use
the global data set list instead of one embedded in GraphWidget.
* grapher/StapParser.hxx: delete the _widget member; use signals to
broadcast that there are new data sets instead of calling into the widget.
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Start of code to be more selective about the association between the
hover text and the underling graph. Also, show the data set name in hover text.
* grapher/GraphStyle.hxx (dataIndexAtPoint): New virtual function.
* grapher/GraphStyle.cxx (dataIndexAtPoint): Implementation for bar graphs
* grapher/GraphWidget.cxx (onHoverTimeout): Use dataIndexAtPoint.
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* grapher/GraphStyle.cxx: New file
* grapher/GraphStyle.hxx: New file
* grapher/Graph(draw): Move much drawing code to GraphStyle::draw
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* grapher/Graph.hxx (Graph): Change variables holding the time limits
of the displayed graph from double to int64_t.
* grapher/Graph.cxx (Graph::draw): Do calculations of time differences
using int64_t.
(Graph::getExtents, Graph::setExtents): Change left and right
arguments to int64_t.
* grapher/GraphData.hxx (GraphDataBase): Change time type to int64_t.
(GraphDataBase::elementAsString): New function.
(GraphData::elementAsString): Implementation of that function.
* grapher/StapParser.cxx (parseData): Parse time values from the stap
script as 64 bit values.
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boost::circular_buffer for time and data storage.
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* grapher/Graph.hxx: New file; class for single graph display.
* grapher/Graph.cxx: New file.
* grapher/GraphData.hxx: Associate title and axis labels with graph
data and not a graph display.
* grapher/GraphWidget.hxx: Move graph-related members to Graph class.
* grapher/GraphWidget.cxx (getExtents, setExtents): Move to Graph
class
(on_expose_event): Move graph rendering to Graph.
(on_button_press_event): Delegate to Graph.
(on_motion_notify_event, on_scroll_event): Modify "active" graph.
* grapher/StapParser.cxx (findTaggedValue): New parsing helper
function.
(io_callback): Support new syntax where properties are attached to
graph data and not the entire graph.
* grapher/grapher.cxx (GrapherWindow): Don't set graph values.
* grapher/Makefile.am: Add Graph.cxx.
* testsuite/systemtap.examples/general/grapher.stp: New property syntax.
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* grapher/GraphData.hxx (GraphDataBase): new superclass for
GraphData. Split time data out as a separate vector.
(GraphData): Rewrite as template.
* grapher/GraphWidget.cxx (on_expose_event): Reflect GraphData
templatization. Handle events with string values.
* grapher/GraphWidget.hxx (GraphWidget): Keep pointers to
GraphDataBase objects instead of GraphData.
* grapher/StapParser.cxx (parseData): new member function
(ioCallback): Handle new discreet event
* grapher/StapParser.hxx (StapParser): keep pointers to GraphDataBase
objects instead of GraphData
* testsuite/systemtap.examples/general/grapher.stp: Display actual key
pressed for keyboard event
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* grapher/GraphData.hxx (CSVData): new class
* grapher/GraphData.cxx (commaSplit): new function
(ioCallback): handle CSV definition and data
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