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75 lines
3.3 KiB
Racket
75 lines
3.3 KiB
Racket
#lang debug racket/base
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(require "layout.rkt"
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"render.rkt"
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"quad.rkt"
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"pipeline.rkt"
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"linearize.rkt"
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"layout.rkt"
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"draw.rkt"
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"struct.rkt"
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"attr.rkt"
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racket/string
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racket/match)
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(define-pass (bootstrap-input x)
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;; turn a simple string into a quad for testing layout.
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#:pre string?
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#:post quad?
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(match x
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[(or (? quad? q) (list (? quad? q))) q]
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[(and (list (? quad?) ...) qs) (make-quad #:elems qs)]
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[other (make-quad #:elems (list other))]))
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(define-pass (split-into-single-char-quads qs)
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;; break list of quads into single characters (keystrokes)
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#:pre (list-of simple-quad?)
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#:post (list-of simple-quad?)
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(apply append
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(for/list ([q (in-list qs)])
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(match q
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[(quad _ _ (list (? string? str)) _)
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(for/list ([c (in-string str)])
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(struct-copy quad q [elems (list (string c))]))]
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[_ (list q)]))))
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(define quad-compile (make-pipeline (list
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bootstrap-input
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;; TODO: resolve font paths
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;; TODO: missing glyphs
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linearize-quad
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;; TODO: maybe we shouldn't downcase values?
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;; we have to track attrs that are case sensitive
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;; instead we could use case-insensitive matching where suitable
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;; but will it always be apparent whether it's suitable?
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;; or will we have to still track which attrs are case-sensitive?
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downcase-attr-values
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;; upgrade relative paths to complete for ease of handling later
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;; TODO: we have to track which attrs take a path
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;; (to distinguish them from attrs that might have path-like values
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;; that should be left alone)
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complete-attr-paths
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;; TODO: resolve font paths
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;; TODO: resolve font sizes
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;; we resolve dimension strings after font size
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;; because they can be denoted relative to em size
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parse-dimension-strings
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;; TODO: parse feature strings
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mark-text-runs
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merge-adjacent-strings
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split-whitespace
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split-into-single-char-quads
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layout
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make-drawing-insts
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stackify)))
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(define insts (parameterize ([current-wrap-width 13])
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(quad-compile "Hello this is the earth")))
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(displayln insts)
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(when (string? insts)
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(render insts #:using text-renderer)
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(render insts #:using drr-renderer)
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#;(render-to-html drawing-insts)
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#;(render-to-pdf drawing-insts))
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