From 37c8ec4e2efadec39b2f884d643545e093ee7b0d Mon Sep 17 00:00:00 2001
From: Jiri Kalvoda <jirikalvoda@kam.mff.cuni.cz>
Date: Sun, 25 Feb 2024 22:08:09 +0100
Subject: [PATCH] Slanted font

---
 src/formatitko/elements.py            | 4 +++-
 src/formatitko/nop_processor.py       | 7 ++++++-
 src/formatitko/output_generator.py    | 6 +++++-
 src/formatitko/tex_generator.py       | 5 +++++
 src/formatitko/transform_processor.py | 8 +++++++-
 5 files changed, 26 insertions(+), 4 deletions(-)

diff --git a/src/formatitko/elements.py b/src/formatitko/elements.py
index 17840f4..1ce1526 100644
--- a/src/formatitko/elements.py
+++ b/src/formatitko/elements.py
@@ -1,4 +1,4 @@
-from panflute import Quoted
+from panflute import Quoted, Emph
 
 
 from .command import Command, InlineCommand, BlockCommand, CodeCommand
@@ -14,3 +14,5 @@ class FQuoted(Quoted):
 		del kwargs["style"]
 		super().__init__(*args, **kwargs)
 
+class Slanted(Emph):
+	pass
diff --git a/src/formatitko/nop_processor.py b/src/formatitko/nop_processor.py
index 8218b2e..3c8af97 100644
--- a/src/formatitko/nop_processor.py
+++ b/src/formatitko/nop_processor.py
@@ -6,7 +6,7 @@ from panflute import MetaValue
 from typing import Union, Callable
 
 from .whitespace import NBSP
-from .elements import FQuoted
+from .elements import FQuoted, Slanted
 from .context import Group, InlineGroup, BlockGroup, Context
 from .whitespace import Whitespace
 from .command import BlockCommand, InlineCommand, CodeCommand, Command
@@ -69,6 +69,7 @@ class NOPProcessor:
 			Cite: self.transform_Cite,
 			Code: self.transform_Code,
 			Emph: self.transform_Emph,
+			Slanted: self.transform_Slanted,
 			Image: self.transform_Image,
 			LineBreak: self.transform_LineBreak,
 			Link: self.transform_Link,
@@ -263,6 +264,10 @@ class NOPProcessor:
 		e.content = self.transform(e.content)
 		return e
 
+	def transform_Slanted(self, e: Slanted) -> Slanted:
+		e.content = self.transform(e.content)
+		return e
+
 	def transform_Link(self, e: Link) -> Link:
 		e.content = self.transform(e.content)
 		return e
diff --git a/src/formatitko/output_generator.py b/src/formatitko/output_generator.py
index 8e854a3..022228e 100644
--- a/src/formatitko/output_generator.py
+++ b/src/formatitko/output_generator.py
@@ -7,7 +7,7 @@ from panflute import stringify
 from typing import Union, Callable
 
 from .whitespace import NBSP
-from .elements import FQuoted
+from .elements import FQuoted, Slanted
 from .context import Group, InlineGroup, BlockGroup, Context
 
 
@@ -108,6 +108,7 @@ class OutputGenerator:
 			Cite: self.generate_Cite,
 			Code: self.generate_Code,
 			Emph: self.generate_Emph,
+			Slanted: self.generate_Slanted,
 			Image: self.generate_Image,
 			LineBreak: self.generate_LineBreak,
 			Link: self.generate_Link,
@@ -376,6 +377,9 @@ class OutputGenerator:
 	def generate_Emph(self, e: Emph):
 		self.generate_simple_tag(e)
 
+	def generate_Slanted(self, e: Slanted):
+		self.generate_Emph(e)
+
 	def generate_Image(self, e: Image):
 		self.generate_simple_tag(e)
 
diff --git a/src/formatitko/tex_generator.py b/src/formatitko/tex_generator.py
index 5a83d8f..0b736db 100644
--- a/src/formatitko/tex_generator.py
+++ b/src/formatitko/tex_generator.py
@@ -179,6 +179,11 @@ class UCWTexGenerator(OutputGenerator):
 		self._italic-=1
 		self.write(r"}")
 
+	def generate_Slanted(self, e: Emph):
+		self.write(r"{\sl{}")
+		self.generate(e.content)
+		self.write(r"}")
+
 	def generate_Strong(self, e: Strong):
 		if self._italic > 0:
 			self.write(r"{\bi{}")
diff --git a/src/formatitko/transform_processor.py b/src/formatitko/transform_processor.py
index 9ed995f..f4257ca 100644
--- a/src/formatitko/transform_processor.py
+++ b/src/formatitko/transform_processor.py
@@ -14,7 +14,7 @@ import importlib
 import json
 
 from .whitespace import NBSP
-from .elements import FQuoted
+from .elements import FQuoted, Slanted
 from .context import Group, InlineGroup, BlockGroup
 from .util import nullify, import_md
 from .context import Context, CommandCallable
@@ -262,6 +262,12 @@ class TransformProcessor(NOPProcessor):
 					raise TypeError(f"Cannot print value of metadatum '{e.content[0].text[1:]}' of type '{type(val)}'")
 				return e
 
+		if "slanted" in e.classes:
+			# `.slanted` class for Span
+			# Content of Span is enclosed into Slanted (subclass os Emph)
+			return self.transform(Slanted(*e.content))
+
+
 		return e
 
 	def transform_CodeBlock(self, e: CodeBlock) -> Union[CodeBlock, Div, Null]: