Summary

• Adds the pictorialBar series — a bar chart that uses repeated symbols (pictograms) instead of solid rectangles. Standard pick for infographic-style dashboards: icon stacks, progress pictograms, etc.
• Mirrors the existing Bar structure (same CartesianCoordChart base, same BaseBarSeriesOption mixin), and reuses BarItemStyleOption / BarLabelOption since pictorialBar shares those semantics.
• Adds the pictogram-specific symbol fields, with the standard Number/String/Boolean overload pattern. Same fields are also available per-data-item.

Public API added

• PictorialBar
• charts.pictorialBar.PictorialBarSeries, PictorialBarDataItem, PictorialBarEmphasis
• origin.chart.pictorialBar.PictorialBarSeriesOption, PictorialBarStateOption, PictorialBarEmphasisOption, PictorialBarDataItemOption

Pictogram-specific fields

symbol (preset name or path:// SVG), symbolSize, symbolPosition (start / center / end), symbolOffset, symbolRotate, symbolRepeat (Boolean / Number / String fixed), symbolRepeatDirection, symbolMargin, symbolClip, symbolBoundingData, symbolPatternSize, hoverAnimation.

How to use

Basic — repeated circles for daily steps

PictorialBar chart = new PictorialBar()
    .addXAxis(new String[] {"Mon", "Tue", "Wed", "Thu", "Fri"})
    .addYAxis()
    .addSeries(new PictorialBarSeries()
        .setSymbol("circle")
        .setSymbolRepeat(true)
        .setSymbolSize(new Number[] {16, 16})
        .setSymbolMargin("10%")
        .setData(new Number[] {8000, 9500, 12000, 11000, 15000}));

Custom SVG path (person icon)

String personPath = "path://M19 11h-1V7c0-3.31-2.69-6-6-6...";

new PictorialBarSeries()
    .setSymbol(personPath)
    .setSymbolRepeat(true)
    .setSymbolSize(new Number[] {22, 22})
    .setSymbolBoundingData(20)         // each icon = 1/20th of the upper bound
    .setItemStyle(new BarItemStyle().setColor("#2f89cf"))
    .setData(new Number[] {8, 9, 12, 7, 14, 18, 15});

For the runnable visual demo, see src/test/java/org/icepear/echarts/demo/PictorialBarDemo.java — run mvn test -Dtest=PictorialBarDemo then open /tmp/pictorial-bar-demo.html.

Tests added (26 new, all passing)

• simple/pictorialBar/BasicPictorialBarTest — snapshot
• charts/pictorialBar/PictorialBarSeriesTest — 22 unit tests covering every overload (symbolSize Number / Number[] / String / String[]; symbolRepeat Boolean / Number / String; symbolMargin Number / String; symbolBoundingData Number / Number[]), per-data-item symbol overrides, bar-layout passthrough (barWidth, barGap, barCategoryGap, etc.), itemStyle/label nesting, emphasis flags, polar coordinate system, null-omission
• render/simple/RenderPictorialBarByChartTest — Engine smoke test
• demo/PictorialBarDemo — opt-in HTML writer for visual inspection

Test plan

• mvn test -Dtest=BasicPictorialBarTest — 1/1
• mvn test -Dtest=PictorialBarSeriesTest — 22/22
• mvn test -Dtest=RenderPictorialBarByChartTest — 2/2
• mvn test -Dtest=PictorialBarDemo then open /tmp/pictorial-bar-demo.html — pictograms render correctly
• mvn test (full suite) — 102 tests, only the 3 pre-existing polar/float-precision failures remain