d8461076b8
- layout: _PAD_BOTTOM 100→160, _PAD_LEFT 120→160 to prevent label clipping - axes: fix _format_tick float-comparison bug (1.1→"1.1" not "1.10"); add auto-rotation for categorical x-axis labels when they overflow slot width - engine: tick guard (>20 ticks falls back to nice_ticks); stacked_bar falls back to bar instead of crashing; extend _find_date_column keywords - series: bar width uses 25th-percentile gap instead of min to avoid invisible bars - legend: line series use line swatch with dash pattern; proportional square size - export: @font-face injected in HTML <head> for PDF to prevent T3Font in InDesign - prompts: add categorical bar chart few-shot example; ban stacked_bar; improve tick_interval guidance; add bar chart refine examples Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
87 lines
2.5 KiB
Python
87 lines
2.5 KiB
Python
"""Canvas sizing and panel layout computation."""
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from __future__ import annotations
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from dataclasses import dataclass
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from app.models.style import LAYOUT
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_PAD_TOP_MIN = 160
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_PAD_BOTTOM = 160
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_PAD_LEFT = 160
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_PAD_RIGHT_STANDARD = 30
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_PAD_RIGHT_PIE = 320
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_PAD_RIGHT_DUAL_Y = 130 # right-side Y-axis labels for dual_y_axis layout
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@dataclass
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class PanelBounds:
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left: float
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right: float
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top: float
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bottom: float
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@property
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def width(self) -> float:
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return self.right - self.left
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@property
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def height(self) -> float:
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return self.bottom - self.top
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def compute_layout(
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layout_type: str,
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vertical_legend: bool = False,
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pad_top: int | None = None,
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) -> tuple[int, int, list[PanelBounds]]:
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"""Compute canvas dimensions and panel bounds."""
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outer = LAYOUT["margins"]["top"]
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_pad_top = max(pad_top, _PAD_TOP_MIN) if pad_top is not None else _PAD_TOP_MIN
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if layout_type == "dual_panel":
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dims = LAYOUT["dual_panel"]
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w, h = dims["width"], dims["height"]
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gap = LAYOUT["panel_gap"]
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pad_right = _PAD_RIGHT_PIE if vertical_legend else _PAD_RIGHT_STANDARD
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plot_left = outer + _PAD_LEFT
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plot_top = outer + _pad_top
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plot_bottom = h - outer - _PAD_BOTTOM
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usable_width = w - outer - _PAD_LEFT - pad_right - outer - gap
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panel_width = usable_width / 2
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left_panel = PanelBounds(
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left=plot_left,
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right=plot_left + panel_width,
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top=plot_top,
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bottom=plot_bottom,
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)
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right_panel = PanelBounds(
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left=plot_left + panel_width + gap,
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right=w - outer - pad_right,
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top=plot_top,
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bottom=plot_bottom,
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)
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return w, h, [left_panel, right_panel]
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elif layout_type == "dual_y_axis":
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dims = LAYOUT["dual_y_axis"]
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w, h = dims["width"], dims["height"]
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panel = PanelBounds(
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left=outer + _PAD_LEFT,
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right=w - outer - _PAD_RIGHT_DUAL_Y,
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top=outer + _pad_top,
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bottom=h - outer - _PAD_BOTTOM,
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)
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return w, h, [panel]
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else: # single
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dims = LAYOUT["single"]
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w, h = dims["width"], dims["height"]
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pad_right = _PAD_RIGHT_PIE if vertical_legend else _PAD_RIGHT_STANDARD
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panel = PanelBounds(
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left=outer + _PAD_LEFT,
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right=w - outer - pad_right,
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top=outer + _pad_top,
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bottom=h - outer - _PAD_BOTTOM,
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)
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return w, h, [panel]
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