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@@ -1,4 +1,6 @@
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import matplotlib.pyplot as plt
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+from fontTools.ttLib import TTFont
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+from matplotlib.font_manager import findSystemFonts
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from core.tools.errors import ToolProviderCredentialValidationError
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from core.tools.provider.builtin.chart.tools.line import LinearChartTool
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@@ -6,6 +8,37 @@ from core.tools.provider.builtin_tool_provider import BuiltinToolProviderControl
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# use a business theme
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plt.style.use('seaborn-v0_8-darkgrid')
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+plt.rcParams['axes.unicode_minus'] = False
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+
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+def init_fonts():
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+ fonts = findSystemFonts()
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+
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+ popular_unicode_fonts = [
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+ 'Arial Unicode MS', 'DejaVu Sans', 'DejaVu Sans Mono', 'DejaVu Serif', 'FreeMono', 'FreeSans', 'FreeSerif',
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+ 'Liberation Mono', 'Liberation Sans', 'Liberation Serif', 'Noto Mono', 'Noto Sans', 'Noto Serif', 'Open Sans',
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+ 'Roboto', 'Source Code Pro', 'Source Sans Pro', 'Source Serif Pro', 'Ubuntu', 'Ubuntu Mono'
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+ ]
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+
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+ supported_fonts = []
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+
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+ for font_path in fonts:
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+ try:
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+ font = TTFont(font_path)
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+ # get family name
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+ family_name = font['name'].getName(1, 3, 1).toUnicode()
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+ if family_name in popular_unicode_fonts:
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+ supported_fonts.append(family_name)
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+ except:
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+ pass
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+
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+ plt.rcParams['font.family'] = 'sans-serif'
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+ # sort by order of popular_unicode_fonts
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+ for font in popular_unicode_fonts:
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+ if font in supported_fonts:
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+ plt.rcParams['font.sans-serif'] = font
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+ break
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+
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+init_fonts()
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class ChartProvider(BuiltinToolProviderController):
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def _validate_credentials(self, credentials: dict) -> None:
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Yeuoly