% Copyright 2026 Open-Guji (https://github.com/open-guji)
%
% Licensed under the Apache License, Version 2.0 (the "License");
% you may not use this file except in compliance with the License.
% You may obtain a copy of the License at
%
%     http://www.apache.org/licenses/LICENSE-2.0
%
% Unless required by applicable law or agreed to in writing, software
% distributed under the License is distributed on an "AS IS" BASIS,
% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
% See the License for the specific language governing permissions and
% limitations under the License.

% luatex-cn-guji-HongLouMengJiaXuBen.cfg
% Configuration for Hong Lou Meng Jiaxu Ben (红楼梦甲戌本)
% Based on the manuscript format of the Jiaxu edition

% =============================================================================
% Grid Calculation (derived from page geometry)
% =============================================================================
%
% Page dimensions (spread):
%   paper-width = 19cm × 2 = 38cm = 1077.2pt
%   paper-height = 38cm = 1077.2pt
%
% Single page: 38cm (H) × 19cm (W)
%
% Layout from manuscript:
%   - 12 columns per half page (+ banxin center column = 25 total)
%   - 18 characters per column
%   - Thin borders with single-line frame
%   - Narrow banxin with yuwei (fish tail)
%
% Margins (estimated from proportions):
%   top margin ≈ 7cm, bottom margin ≈ 2.5cm
%   left/right margin ≈ 0.8cm each
%
% Width calculation:
%   content-width = 1077.2 - 22.7 - 22.7 = 1031.8pt
%   25 columns: grid-width = 1031.8 / 25 ≈ 41.3pt
%
% =============================================================================

\gujiSetup{
    % ==========================================================================
    % Page Geometry (Spread - two pages side by side)
    % ==========================================================================
    paper-width = 1077.2pt,   % 38cm (19cm × 2)
    paper-height = 1077.2pt,  % 38cm
    margin-top = 226.8pt,     % ~8cm
    margin-bottom = 113.4pt,  % ~4cm
    margin-left = 25.5pt,     % ~0.9cm
    margin-right = 25.5pt,    % ~0.9cm

    % ==========================================================================
    % Border Configuration
    % ==========================================================================
    border = false,
    outer-border = false,
    border-padding-top = 3pt,
    border-padding-bottom = 3pt,

    % ==========================================================================
    % Grid Configuration (25 cols × 18 chars)
    % ==========================================================================
    % Number of columns per half page (excluding Banxin center column)
    n-column = 12,
    % Number of characters per column (grid-height auto-calculated)
    n-char = 18,
    % Grid width calculation:
    %   content-width = 1077.2 - 25.5 - 25.5 = 1026.2pt
    %   25 columns: grid-width = 1026.2 / 25 ≈ 41.05pt
    grid-width = 41.05pt,

    % ==========================================================================
    % Banxin (版心) Configuration
    % ==========================================================================
    % Jiaxu edition has a narrower banxin with distinctive proportions
    % Upper section for title, middle for content, lower with fish tail
    banxin-upper-ratio = 0.18,
    banxin-middle-ratio = 0.38,

    chapter-title-top-margin = 40pt,
    chapter-title-font-size = 24pt,
    chapter-title-cols = 1,
    chapter-title-grid-height = 55pt,
    % Jiaxu edition characteristics: No yuwei, no dividers, centered page numbers
    upper-yuwei = false,
    lower-yuwei = false,
    banxin-divider = false,
    book-name-align = top,
    book-name-grid-height = 38pt,
    banxin-padding-top = 0pt,
    page-number-font-size = 17pt,

    % ==========================================================================
    % Typography
    % ==========================================================================
    % Font size matches grid height for 18 chars per column
    font-size = 30pt,
    line-spacing = 45pt,
    % Font settings are optional - users can load fontspec and set fonts in their document
    % Example in your .tex file:
    %   \usepackage{fontspec}
    %   \setmainfont{JiGu}[RawFeature={+vert,+vrt2}, CharacterWidth=Full]
    % If not specified, LuaTeX will use the default font
    vertical-align = center,

    % Jiazhu (dual-column notes) alignment
    jiazhu-align = outward,

    % ==========================================================================
    % Side Pizhu (Side Commentary) Configuration
    % ==========================================================================
    % Jia Xu Ben style: Red ink commentary
    % yoffset ensures it aligns nicely with the character grid
    sidenode-color = red,
    sidenode-font-size = 19pt,
    sidenode-grid-height = 10pt,
    sidenode-yoffset = 0em,
    sidenode-border-padding-top = 0.5em,
    sidenode-border-padding-bottom = 0.5em,

    % 批注 (Floating commentary)
    pizhu-color = 1 0 0,
    pizhu-font-size = 18pt,
    pizhu-grid-width = 20pt,
    pizhu-grid-height = 19pt,
}


\endinput