Chart2 Direct Legend Font

Overview

The Legend parts of a Chart can be styled using the various style_* methods of the ChartLegend class.

The style_font_general() method combines some of the option of style_font() and style_font_effects() into a single class. Also a few more options are added.

Setup

General setup for this example.

from __future__ import annotations
from pathlib import Path
import uno
from ooo.dyn.awt.gradient_style import GradientStyle
from ooodev.calc import CalcDoc, ZoomKind
from ooodev.loader.lo import Lo
from ooodev.utils.color import StandardColor
from ooodev.utils.data_type.color_range import ColorRange

def main() -> int:
    with Lo.Loader(connector=Lo.ConnectPipe()):
        fnm = Path.cwd() / "tmp" / "piechart.ods"
        doc = CalcDoc.open_doc(fnm=fnm, visible=True)
        Lo.delay(500)
        doc.zoom(ZoomKind.ZOOM_100_PERCENT)

        sheet = doc.sheets[0]
        sheet["A1"].goto()
        chart_table = sheet.charts[0]
        chart_doc = chart_table.chart_doc
        _ = chart_doc.style_border_line(
            color=StandardColor.BRICK,
            width=1,
        )
        _ = chart_doc.style_area_gradient(
            step_count=64,
            style=GradientStyle.SQUARE,
            angle=45,
            grad_color=ColorRange(
                StandardColor.GREEN_DARK4,
                StandardColor.TEAL_LIGHT2,
            ),
        )
        legend = chart_doc.first_diagram.get_legend()
        if legend is None:
            raise ValueError("Legend is None")
        _ = legend.style_font_general(b=True, color=StandardColor.PURPLE, size=12)

        # f_style = legend.style_font_get()
        # assert f_style is not None

        Lo.delay(1_000)
        doc.close()
    return 0

if __name__ == "__main__":
    SystemExit(main())

Apply the font effects to the Legend

Before formatting the chart is visible in Fig. 833.

# ... other code
_ = legend.style_font_general(b=True, color=StandardColor.PURPLE, size=12)

Running the above code will produce the following output in Fig. 519.

Chart with Legend font applied — Fig. 519 Chart with Legend font applied