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Tweak x-axis labels of charts #4733

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Merged
kaikreuzer merged 1 commit into from
May 19, 2025
Merged

Tweak x-axis labels of charts #4733

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5 changes: 5 additions & 0 deletions ...in/java/org/openhab/core/ui/internal/chart/defaultchartprovider/DefaultChartProvider.java
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Original file line number Diff line number Diff line change
Expand Up @@ -206,6 +206,11 @@ public BufferedImage createChart(@Nullable String serviceId, @Nullable String th
}
styler.setYAxisTickMarkSpacingHint(yAxisSpacing);
styler.setYAxisLabelAlignment(TextAlignment.Right);
// avoid overlapping labels on x-axis;
// Font.getSize() is related to font height, but will also give an indication of the width;
// pattern is not the actual label, but also gives a rough estimation of the width of the label
int xAxisSpacing = Math.max(width / 15, chartTheme.getAxisTickLabelsFont(dpi).getSize() * pattern.length());
styler.setXAxisTickMarkSpacingHint(xAxisSpacing);
// chart
styler.setChartBackgroundColor(chartTheme.getChartBackgroundColor());
styler.setChartFontColor(chartTheme.getChartFontColor());
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