Learning TeX: Do Layouts with TeX macros

[paperdoorknob] / glowfic.py

diff --git a/glowfic.py b/glowfic.py
index b7e7ba740b33f82fbebd43ea9c1c4ffa36bc1973..012bd069aca5a3066b443640bc66904d796e44ee 100644 (file)
--- a/glowfic.py
+++ b/glowfic.py
@@ -5,7 +5,6 @@
 # Free Software Foundation, version 3.
 
 
-from abc import ABC, abstractmethod
 from dataclasses import dataclass
 import itertools
 from urllib.parse import parse_qsl, urlencode, urlparse, urlunparse
@@ -111,36 +110,27 @@ def makeChunk(chunk_dom: Tag, image_store: ImageStore) -> Chunk:
                  content)
 
 
-class Layout(ABC):
+def renderChunk(texifier: Texifier, chunk: Chunk) -> bytes:
+    return b''.join([
+        br'\glowhead{',
+        br'\glowicon{%s}' % chunk.icon.encode('UTF-8') if chunk.icon else b'',
+        b'}{',
+        texifier.texify(chunk.character) if chunk.character else b'',
+        b'}{',
+        texifier.texify(chunk.screen_name) if chunk.screen_name else b'',
+        b'}{',
+        texifier.texify(chunk.author) if chunk.author else b'',
+        b'}',
+        texifier.texify(chunk.content)])
 
-    @abstractmethod
-    def renderChunk(self, chunk: Chunk) -> bytes:
-        raise NotImplementedError()
 
+ContentOnlyLayout = br'''
+\newcommand{\glowhead}[4]{}
+'''
 
-class ContentOnlyLayout(Layout):
 
-    def __init__(self, texifier: Texifier) -> None:
-        self._texifier = texifier
-
-    def renderChunk(self, chunk: Chunk) -> bytes:
-        return self._texifier.texify(chunk.content) + b'\n'
-
-
-class BelowIconLayout(Layout):
-
-    def __init__(self, texifier: Texifier) -> None:
-        self._texifier = texifier
-
-    def renderChunk(self, chunk: Chunk) -> bytes:
-        meta = []
-        if chunk.icon:
-            meta += [br'\glowicon{%s}' % chunk.icon.encode('UTF-8')]
-        meta += [self._texifier.texify(x)
-                 for x in [chunk.character, chunk.screen_name, chunk.author]
-                 if x is not None]
-
-        return br'''\wrapstuffclear
+BelowIconLayout = br'''
+\newcommand{\glowhead}[4]{\wrapstuffclear
 \begin{wrapstuff}[l]
 \fbox{
 \begin{varwidth}{0.5\textwidth}
@@ -152,7 +142,10 @@ class BelowIconLayout(Layout):
   }\\*}
   \vspace{-1em}
 \begin{center}
-%s
+#1\ifnotempty
+{#1}{\\*}#2\ifnotempty
+{#2}{\\*}#3\ifnotempty
+{#3}{\\*}#4
 \end{center}
 \end{varwidth}
 }
@@ -160,40 +153,25 @@ class BelowIconLayout(Layout):
 
 \strut
 
-\noindent %s
-''' % (
-            br'\\*'.join(meta),
-            self._texifier.texify(chunk.content))
+\noindent}'''
 
 
-class BesideIconLayout(Layout):
+# Why is \textwidth not the width of the text?
+# Why is the width of the text .765\textwidth?
+BesideIconLayout = br'''
+\newcommand{\glowhead}[4]{
 
-    def __init__(self, texifier: Texifier) -> None:
-        self._texifier = texifier
-
-    def renderChunk(self, chunk: Chunk) -> bytes:
-        meta = [
-            chunk.character,
-            chunk.screen_name,
-            chunk.author,
-        ]
+\strut
 
-        # Why is \textwidth not the width of the text?
-        # Why is the width of the text .765\textwidth?
-        return br'''\noindent\fbox{
-%s
+\noindent\fbox{
+#1
 \parbox[b]{.765\textwidth}{
 \begin{center}
-%s
+#2\ifnotempty
+{#2}{\\*}#3\ifnotempty
+{#3}{\\*}#4
 \end{center}
 }
 }\\*
 \vspace{-0.75em}\\*
-\noindent %s
-
-\strut
-
-''' % (
-            br'\glowicon{%s}' % chunk.icon.encode('UTF-8') if chunk.icon else b'',
-            br'\\*'.join(self._texifier.texify(x) for x in meta if x is not None),
-            self._texifier.texify(chunk.content))
+\noindent}'''