ack
f9af1ff869
Assembled from klammertext-dev daad6273483a. The font-store listing is rendered from ref/ (one table per search directory, in search order, with the styles each typeface holds); the search path is described, not validated, so a KLAMMERTEXT_FONTS directory that does not exist -- the default ~/.klammertext/fonts on a fresh install -- is a row saying so and the command exits 0. A typeface an earlier directory also holds is marked shadowed, with the winning directory, in a column present only when needed. The store's layout convention has one reader, fonts_in_directory(). Six kdesc suite cases pin the listing.
75 lines
3.8 KiB
C++
75 lines
3.8 KiB
C++
#pragma once
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// The Klammertext font store (infrastructure; see font_store.cpp).
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#include <string>
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#include "locator.h"
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#include <vector>
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struct Resolved_font {
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std::string family_name {}; // "Crimson Pro"
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std::string dir_name {}; // "crimson-pro"
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std::string font_dir {}; // Full path to font directory
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std::string css_file {}; // Full path to .css file
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// .ttf filenames for each variant (empty if variant not available):
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std::string regular {};
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std::string bold {};
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std::string italic {};
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std::string bold_italic {};
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float xheight_ratio = 0.0f; // x-height / unitsPerEm from OS/2 table
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float capheight_ratio = 0.0f; // cap-height / unitsPerEm from OS/2 table
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};
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std::string name_to_dirname(const std::string& name);
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// Directories searched for installed fonts (KLAMMERTEXT_FONTS, default
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// ~/.klammertext/fonts); the default font set is searched after them.
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std::vector<std::string> installed_font_dirs();
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// The distribution's default fonts: $KLAMMERTEXT_HOME/fnt.
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std::string default_font_dir();
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// Every installable font family found across those directories.
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std::vector<std::string> available_font_families();
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// Every font ONE base directory holds, in directory-name order: each
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// <name>.css beside a <name>/ directory, the family name read from the css
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// (the directory name when the css declares none), the styles classified.
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// Empty for a directory that does not exist or holds no fonts; the caller
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// asks the filesystem which. The store's layout convention lives here, so
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// a listing of the store (kdesc --typeface) reads it rather than restating it.
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std::vector<Resolved_font> fonts_in_directory(const std::string& base);
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// Whether the store can resolve NAME -- written as the family name or as
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// the store's directory name, since both resolve. The question a klammer
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// asks before it names a typeface that is not shipped (a CJK face), so it
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// can render the text plainly and say how to install the font instead of
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// failing the document. Never throws; resolve_font() is the error path.
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bool font_installed(const std::string& name);
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// The Locator is the DOCUMENT location to blame when the typeface is not
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// installed: without it the "not installed" error cites font_store.cpp,
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// a source location no user can act on (the no-.cpp-location rule).
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Resolved_font resolve_font(const std::string& family_name,
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const Locator& loc = Locator::none());
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void install_resolved_font(const Resolved_font& font, std::string output_dir);
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// One font file classified by its internal metadata (name table, OS/2).
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struct Font_file {
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std::string path {};
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std::string family {}; // from name table (nameID 16, else 1)
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std::string variant {}; // Regular | Bold | Italic | BoldItalic
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std::string extension {}; // ".ttf" or ".otf"
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bool variable = false; // has an 'fvar' table
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int weight = 0; // OS/2 usWeightClass
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std::string note {}; // reason when the file is not installable
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};
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// Recursively classify every .ttf/.otf under a directory.
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std::vector<Font_file> classify_font_files(const std::string& directory);
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// Install the classified families from source_dir into dest_dir (default:
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// the first KLAMMERTEXT_FONTS directory, created if necessary), in the
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// canonical relocatable layout <dest>/<family-kebab>/{Variant}.ttf plus a
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// generated <family-kebab>.css with relative urls. Returns a report.
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std::string install_fonts(const std::string& source_dir, std::string dest_dir = "");
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// Write an HTML specimen page for fonts into output_dir. With an empty
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// source_dir, samples every available font in the store; otherwise
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// classifies and samples the (possibly uninstalled) fonts in source_dir.
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std::string write_font_samples(const std::string& output_dir, const std::string& source_dir = "");
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