From 80a33fd3eafde3b92ef108be692fcbfbcb9c0546 Mon Sep 17 00:00:00 2001
From: Witold Filipczyk <witekfl@poczta.onet.pl>
Date: Fri, 25 Aug 2023 20:53:26 +0200
Subject: [PATCH] [css] line-through

---
 src/document/css/value.c  |  6 +++---
 src/document/libdom/css.c | 12 ++++++++++--
 test/css/strike.html      |  5 +++++
 3 files changed, 18 insertions(+), 5 deletions(-)
 create mode 100644 test/css/strike.html

diff --git a/src/document/css/value.c b/src/document/css/value.c
index 1ec77a06..0aeef14d 100644
--- a/src/document/css/value.c
+++ b/src/document/css/value.c
@@ -326,10 +326,10 @@ css_parse_text_decoration_value(struct css_property_info *propinfo,
 	 * 'background'-style. --pasky */
 	if (scanner_token_contains(token, "underline")) {
 		value->font_attribute.add |= AT_UNDERLINE;
-
+	} else if (scanner_token_contains(token, "line-through")) {
+		value->font_attribute.add |= AT_STRIKE;
 	} else if (scanner_token_contains(token, "none")) {
-		value->font_attribute.rem |= AT_UNDERLINE;
-
+		value->font_attribute.rem |= (AT_UNDERLINE | AT_STRIKE);
 	} else {
 		return 0;
 	}
diff --git a/src/document/libdom/css.c b/src/document/libdom/css.c
index 0e314aef..2ed5db8f 100644
--- a/src/document/libdom/css.c
+++ b/src/document/libdom/css.c
@@ -1873,7 +1873,7 @@ apply_background_color(struct html_context *html_context, struct html_element *h
 
 static void
 apply_font_attribute(struct html_context *html_context,
-			 struct html_element *element, bool underline, bool bold)
+			 struct html_element *element, bool underline, bool bold, bool strike)
 {
 	int add = 0;
 	int rem = 0;
@@ -1888,6 +1888,13 @@ apply_font_attribute(struct html_context *html_context,
 	} else {
 		rem |= AT_BOLD;
 	}
+
+	if (strike) {
+		add |= AT_STRIKE;
+	} else {
+		rem |= AT_STRIKE;
+	}
+
 	element->attr.style.attr |= add;
 	element->attr.style.attr &= ~rem;
 }
@@ -2121,9 +2128,10 @@ select_css(struct html_context *html_context, struct html_element *html_element)
 	}
 
 	bool underline = css_computed_text_decoration(style->styles[CSS_PSEUDO_ELEMENT_NONE]) & CSS_TEXT_DECORATION_UNDERLINE;
+	bool strike = css_computed_text_decoration(style->styles[CSS_PSEUDO_ELEMENT_NONE]) & CSS_TEXT_DECORATION_LINE_THROUGH;
 	bool bold = is_bold(css_computed_font_weight(style->styles[CSS_PSEUDO_ELEMENT_NONE]));
 
-	apply_font_attribute(html_context, html_element, underline, bold);
+	apply_font_attribute(html_context, html_element, underline, bold, strike);
 
 	uint8_t font_style = css_computed_font_style(style->styles[CSS_PSEUDO_ELEMENT_NONE]);
 
diff --git a/test/css/strike.html b/test/css/strike.html
new file mode 100644
index 00000000..b4cdd6cc
--- /dev/null
+++ b/test/css/strike.html
@@ -0,0 +1,5 @@
+<style>
+H2 { text-decoration: line-through }
+</style>
+
+<h2>Test text</h2>