Allow to customize legend and graph style in TrendingTask

Framework/include/QualityControl/TrendingTask.h

@@ -73,6 +73,7 @@ class TrendingTask : public PostProcessingInterface
   static void formatTimeXAxis(TH1* background);
   static void formatRunNumberXAxis(TH1* background);
   static std::string deduceGraphLegendOptions(const TrendingTaskConfig::Graph& graphConfig);
+  static void applyStyleToGraph(TGraph* graph, const TrendingTaskConfig::GraphStyle& style);
 
   /// returns true only if all datasources were available to update reductor
   bool trendValues(const Trigger& t, repository::DatabaseInterface&);

Framework/include/QualityControl/TrendingTaskConfig.h

@@ -32,6 +32,25 @@ struct TrendingTaskConfig : PostProcessingConfig {
   TrendingTaskConfig(std::string name, const boost::property_tree::ptree& config);
   ~TrendingTaskConfig() = default;
 
+  // graph style configuration
+  // colors as defined by ROOT TColor class:
+  // https://root.cern/doc/master/classTColor.html
+  // marker colors and styles are as defined by ROOT TAttMarker class
+  // https://root.cern/doc/master/classTAttMarker.html
+  // line styles are as defined by ROOT TAttLine class
+  // https://root.cern/doc/master/classTAttLine.html
+  // WARNING: Any parameters in this struct will override colliding parameters in option
+  struct GraphStyle {
+    int lineColor = -1;
+    int lineStyle = -1;
+    int lineWidth = -1;
+    int markerColor = -1;
+    int markerStyle = -1;
+    float markerSize = -1.f;
+    int fillColor = -1;
+    int fillStyle = -1;
+  };
+
   // this corresponds to one TTree::Draw() call, i.e. one graph or histogram drawing
   struct Graph {
     std::string name;
@@ -40,6 +59,13 @@ struct TrendingTaskConfig : PostProcessingConfig {
     std::string selection;
     std::string option; // the list of possible options are documented in TGraphPainter and THistPainter
     std::string errors;
+    GraphStyle style;
+  };
+
+  // legend configuration
+  struct LegendConfig {
+    int nColumns{ 1 };
+    float x1{ -1.f }, y1{ -1.f }, x2{ -1.f }, y2{ -1.f }; // NDC coords
   };
 
   // this corresponds to one canvas which can include multiple graphs
@@ -49,6 +75,7 @@ struct TrendingTaskConfig : PostProcessingConfig {
     std::string graphAxisLabel;
     std::string graphYRange;
     int colorPalette = 0;
+    LegendConfig legend;
     std::vector<Graph> graphs;
   };
 

Framework/src/TrendingTask.cxx

@@ -142,6 +142,40 @@ void TrendingTask::initializeTrend(o2::quality_control::repository::DatabaseInte
   }
 }
 
+void TrendingTask::applyStyleToGraph(TGraph* graph, const TrendingTaskConfig::GraphStyle& style)
+{
+  if (!graph) {
+    return;
+  }
+
+  if (style.lineColor >= 0) {
+    graph->SetLineColor(style.lineColor);
+  }
+  if (style.lineStyle >= 0) {
+    graph->SetLineStyle(style.lineStyle);
+  }
+  if (style.lineWidth >= 0) {
+    graph->SetLineWidth(style.lineWidth);
+  }
+
+  if (style.markerColor >= 0) {
+    graph->SetMarkerColor(style.markerColor);
+  }
+  if (style.markerStyle >= 0) {
+    graph->SetMarkerStyle(style.markerStyle);
+  }
+  if (style.markerSize >= 0.f) {
+    graph->SetMarkerSize(style.markerSize);
+  }
+
+  if (style.fillColor >= 0) {
+    graph->SetFillColor(style.fillColor);
+  }
+  if (style.fillStyle >= 0) {
+    graph->SetFillStyle(style.fillStyle);
+  }
+}
+
 void TrendingTask::initialize(Trigger, framework::ServiceRegistryRef services)
 {
   // removing leftovers from any previous runs
@@ -310,19 +344,31 @@ std::string TrendingTask::deduceGraphLegendOptions(const TrendingTaskConfig::Gra
 TCanvas* TrendingTask::drawPlot(const TrendingTaskConfig::Plot& plotConfig)
 {
   auto* c = new TCanvas();
-  auto* legend = new TLegend(0.3, 0.2);
 
+  // Legend
+  TLegend* legend = nullptr;
+  if (plotConfig.legend.x1 >= 0 && plotConfig.legend.y1 >= 0 && plotConfig.legend.x2 >= 0 && plotConfig.legend.y2 >= 0) {
+    legend = new TLegend(plotConfig.legend.x1, plotConfig.legend.y1,
+                         plotConfig.legend.x2, plotConfig.legend.y2,
+                         nullptr, "NDC");
+    if (plotConfig.legend.nColumns > 0) {
+      legend->SetNColumns(plotConfig.legend.nColumns);
+    }
+  } else {
+    legend = new TLegend(0.3, 0.2);
+  }
+  legend->SetBorderSize(0);
+  legend->SetFillStyle(0);
+  legend->SetTextSize(0.03);
+  legend->SetMargin(0.15);
+
+  // Keep palette behavior unless user forces explicit colors via per-graph style
   if (plotConfig.colorPalette != 0) {
-    // this will work just once until we bump ROOT to a version which contains this commit:
-    // https://github.com/root-project/root/commit/0acdbd5be80494cec98ff60ba9a73cfe70a9a57a
-    // and enable the commented out line
-    // perhaps JSROOT >7.7.1 will allow us to retain the palette as well.
     gStyle->SetPalette(plotConfig.colorPalette);
     // This makes ROOT store the selected palette for each generated plot.
     // TColor::DefinedColors(1); // TODO enable when available
   } else {
-    // we set the default palette
-    gStyle->SetPalette();
+    gStyle->SetPalette(); // default
   }
 
   // regardless whether we draw a graph or a histogram, a histogram is always used by TTree::Draw to draw axes and title
@@ -337,6 +383,7 @@ TCanvas* TrendingTask::drawPlot(const TrendingTaskConfig::Plot& plotConfig)
     // having "SAME" at the first TTree::Draw() call will not work, we have to add it only in subsequent Draw calls
     std::string option = firstGraphInPlot ? graphConfig.option : "SAME " + graphConfig.option;
 
+    // Draw main series
     mTrend->Draw(graphConfig.varexp.c_str(), graphConfig.selection.c_str(), option.c_str());
 
     // For graphs, we allow to draw errors if they are specified.
@@ -357,11 +404,23 @@ TCanvas* TrendingTask::drawPlot(const TrendingTaskConfig::Plot& plotConfig)
       }
     }
 
+    // Legend entry and styling for graphs
     if (auto graph = dynamic_cast<TGraph*>(c->FindObject("Graph"))) {
+      if (plotOrder >= 2) {
+        // Style objects after Draw so we override palette/auto styling when requested
+        applyStyleToGraph(graph, graphConfig.style);
+        // Keep errors visually consistent with the main series
+        if (graphErrors) {
+          applyStyleToGraph(graphErrors, graphConfig.style);
+        }
+      }
       graph->SetName(graphConfig.name.c_str());
       graph->SetTitle(graphConfig.title.c_str());
-      legend->AddEntry(graph, graphConfig.title.c_str(), deduceGraphLegendOptions(graphConfig).c_str());
+      legend->AddEntry(graph, graphConfig.title.c_str(),
+                       deduceGraphLegendOptions(graphConfig).c_str());
     }
+
+    // Legend entry and styling for histograms
     if (auto htemp = dynamic_cast<TH1*>(c->FindObject("htemp"))) {
       if (plotOrder == 1) {
         htemp->SetName(graphConfig.name.c_str());
@@ -376,7 +435,7 @@ TCanvas* TrendingTask::drawPlot(const TrendingTaskConfig::Plot& plotConfig)
       // so we have to do it here.
       htemp->BufferEmpty();
       // we keep the pointer to bg histogram for later postprocessing
-      if (background == nullptr) {
+      if (!background) {
         background = htemp;
       }
     }
@@ -430,6 +489,7 @@ TCanvas* TrendingTask::drawPlot(const TrendingTaskConfig::Plot& plotConfig)
   } else {
     delete legend;
   }
+
   c->Modified();
   c->Update();
 

Framework/src/TrendingTaskConfig.cxx

@@ -36,26 +36,55 @@ TrendingTaskConfig::TrendingTaskConfig(std::string id, const boost::property_tre
       for (const auto& [_, graphConfig] : graphsConfig.value()) {
         // first we use name of the graph, if absent, we use graph title, if absent, we use plot (object) name.
         const auto& name = graphConfig.get<std::string>("name", graphConfig.get<std::string>("title", plotConfig.get<std::string>("name")));
+        GraphStyle style;
+        style.lineColor = graphConfig.get<int>("style.lineColor", -1);
+        style.lineStyle = graphConfig.get<int>("style.lineStyle", -1);
+        style.lineWidth = graphConfig.get<int>("style.lineWidth", -1);
+        style.markerColor = graphConfig.get<int>("style.markerColor", -1);
+        style.markerStyle = graphConfig.get<int>("style.markerStyle", -1);
+        style.markerSize = graphConfig.get<float>("style.markerSize", -1.f);
+        style.fillColor = graphConfig.get<int>("style.fillColor", -1);
+        style.fillStyle = graphConfig.get<int>("style.fillStyle", -1);
+
         graphs.push_back({ name,
                            graphConfig.get<std::string>("title", ""),
                            graphConfig.get<std::string>("varexp"),
                            graphConfig.get<std::string>("selection", ""),
                            graphConfig.get<std::string>("option", ""),
-                           graphConfig.get<std::string>("graphErrors", "") });
+                           graphConfig.get<std::string>("graphErrors", ""),
+                           style });
       }
     } else {
+      GraphStyle style;
+      style.lineColor = plotConfig.get<int>("style.lineColor", -1);
+      style.lineStyle = plotConfig.get<int>("style.lineStyle", -1);
+      style.lineWidth = plotConfig.get<int>("style.lineWidth", -1);
+      style.markerColor = plotConfig.get<int>("style.markerColor", -1);
+      style.markerStyle = plotConfig.get<int>("style.markerStyle", -1);
+      style.markerSize = plotConfig.get<float>("style.markerSize", -1.f);
+      style.fillColor = plotConfig.get<int>("style.fillColor", -1);
+      style.fillStyle = plotConfig.get<int>("style.fillStyle", -1);
       graphs.push_back({ plotConfig.get<std::string>("name", ""),
                          plotConfig.get<std::string>("title", ""),
                          plotConfig.get<std::string>("varexp"),
                          plotConfig.get<std::string>("selection", ""),
                          plotConfig.get<std::string>("option", ""),
                          plotConfig.get<std::string>("graphErrors", "") });
     }
+
+    LegendConfig leg;
+    leg.nColumns = plotConfig.get<int>("legend.nColumns", 1);
+    leg.x1 = plotConfig.get<float>("legend.x1", -1.f);
+    leg.y1 = plotConfig.get<float>("legend.y1", -1.f);
+    leg.x2 = plotConfig.get<float>("legend.x2", -1.f);
+    leg.y2 = plotConfig.get<float>("legend.y2", -1.f);
+
     plots.push_back({ plotConfig.get<std::string>("name"),
                       plotConfig.get<std::string>("title", ""),
                       plotConfig.get<std::string>("graphAxisLabel", ""),
                       plotConfig.get<std::string>("graphYRange", ""),
                       plotConfig.get<int>("colorPalette", 0),
+                      leg,
                       graphs });
   }
 

Modules/FIT/FT0/etc/ft0-post-processing.json

@@ -22,6 +22,33 @@
         "url": ""
       }
     },
+    "tasks": {
+      "Digits": {
+        "active": "true",
+        "className": "o2::quality_control_modules::ft0::DigitQcTask",
+        "moduleName": "QcFT0",
+        "detectorName": "FT0",
+        "cycleDurationSeconds": "60",
+        "resetAfterCycles": "1",
+        "dataSource": {
+          "type": "direct",
+          "query": "digits:FT0/DIGITSBC/0;channels:FT0/DIGITSCH/0"
+        },
+        "taskParameters": {
+          "#ChannelIDs": "0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215",
+          "ChannelIDsAmpVsTime": "0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215",
+          "trgThresholdTimeLow": "-100",
+          "trgThresholdTimeHigh": "100",
+          "trgModeSide": "A+C",
+          "trgModeThresholdVar": "Ampl",
+          "trgThresholdSCenA": "20",
+          "trgThresholdCenA": "40",
+          "trgOrGate": "153",
+          "trgChargeLevelLow": "0",
+          "trgChargeLevelHigh": "4095"
+        }
+      }
+    },
     "checks": {
       "ASideInnerMIPCheck": {
         "active": "true",
@@ -416,6 +443,7 @@
         "className": "o2::quality_control::postprocessing::TrendingTask",
         "moduleName": "QcFT0",
         "detectorName": "FT0",
+        "resumeTrend": "true",
         "dataSources": [
           {
             "type": "repository",
@@ -431,6 +459,34 @@
           }
         ],
         "plots": [
+          {
+            "name": "trend_cycle_duration_ntf_corr",
+            "title": "cycle duration: ns/TF;time;cycle duration [ns/TimeFrames]",
+            "legend": { "enabled": true, "x1": 0.70, "y1": 0.70, "x2": 0.93, "y2": 0.90, "nColumns": 1 },
+            "graphs": [
+              {
+                "title": "cycle duration [ns]",
+                "varexp": "CycleDuration.entries:time",
+                "selection": "",
+                "option": "*LP",
+                "style": { "lineColor": 38, "markerColor": 4, "markerStyle": 20, "lineWidth": 2 }
+              },
+              {
+                "title": "cycle duration [TimeFrames]",
+                "varexp": "CycleDurationNTF.entries:time",
+                "selection": "",
+                "option": "*LP",
+                "style": { "lineColor": 8, "markerColor": 3, "markerStyle": 30, "lineWidth": 2 }
+              },
+              {
+                "title": "cycle duration: ns/TF;time;cycle duration [ns/TimeFrames]",
+                "varexp": "CycleDuration.entries/CycleDurationNTF.entries:time",
+                "selection": "",
+                "option": "*LP",
+                "style": { "lineColor": 31, "markerColor": 30, "markerStyle": 23, "lineWidth": 2 }
+              }
+            ]
+          },
           {
             "name": "trend_cycle_duration",
             "title": "cycle duration [ns]",