BarChart: Gradient Mode for Auto Max (#74122)

* BarChart: Gradient Mode for Auto Max

* add gdev panel

* clean

---------

Co-authored-by: Leon Sorokin <leeoniya@gmail.com>

devenv/dev-dashboards/panel-barchart/barchart-thresholds-mappings.json

@@ -1121,6 +1121,93 @@
       "title": "Hue",
       "type": "barchart"
     },
+    {
+      "datasource": {
+        "type": "testdata",
+        "uid": "PD8C576611E62080A"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "continuous-GrYlRd"
+          },
+          "custom": {
+            "axisCenteredZero": false,
+            "axisColorMode": "text",
+            "axisLabel": "",
+            "axisPlacement": "auto",
+            "fillOpacity": 100,
+            "gradientMode": "scheme",
+            "hideFrom": {
+              "legend": false,
+              "tooltip": false,
+              "viz": false
+            },
+            "lineWidth": 0,
+            "scaleDistribution": {
+              "type": "linear"
+            },
+            "thresholdsStyle": {
+              "mode": "off"
+            }
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green"
+              },
+              {
+                "color": "red",
+                "value": 80
+              }
+            ]
+          }
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 9,
+        "w": 5,
+        "x": 10,
+        "y": 18
+      },
+      "id": 15,
+      "options": {
+        "barRadius": 0,
+        "barWidth": 0.97,
+        "groupWidth": 0.7,
+        "legend": {
+          "calcs": [],
+          "displayMode": "list",
+          "placement": "bottom",
+          "showLegend": true
+        },
+        "orientation": "auto",
+        "showValue": "auto",
+        "stacking": "none",
+        "tooltip": {
+          "mode": "single",
+          "sort": "none"
+        },
+        "xTickLabelRotation": 0,
+        "xTickLabelSpacing": 0
+      },
+      "targets": [
+        {
+          "csvContent": "label,value\nx,3\na,10\nb,20\nc,30",
+          "datasource": {
+            "type": "testdata",
+            "uid": "PD8C576611E62080A"
+          },
+          "refId": "A",
+          "scenarioId": "csv_content"
+        }
+      ],
+      "title": "Green-Yellow-Red",
+      "type": "barchart"
+    },
     {
       "datasource": {
         "type": "testdata",
@@ -1239,7 +1326,7 @@
       "type": "barchart"
     }
   ],
-  "schemaVersion": 37,
+  "schemaVersion": 38,
   "tags": [
     "gdev",
     "panel-tests",
@@ -1257,6 +1344,6 @@
   "timezone": "",
   "title": "BarChart - Thresholds & Mappings",
   "uid": "2I2uMSB7z",
-  "version": 32,
+  "version": 7,
   "weekStart": ""
-}
+}

public/app/plugins/panel/barchart/utils.ts

@@ -236,8 +236,8 @@ export const preparePlotConfigBuilder: UPlotConfigPrepFn<BarChartOptionsEX> = ({
       thresholds: field.config.thresholds,
       hardMin: field.config.min,
       hardMax: field.config.max,
-      softMin,
-      softMax,
+      softMin: customConfig.axisSoftMin,
+      softMax: customConfig.axisSoftMax,
 
       // The following properties are not used in the uPlot config, but are utilized as transport for legend config
       // PlotLegend currently gets unfiltered DataFrame[], so index must be into that field array, not the prepped frame's which we're iterating here