From 6411efcde8e9fea9c7a791a76578823bfe0942cb Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@felloff.net>
Date: Sun, 15 Mar 2015 17:05:24 +0100
Subject: [PATCH] mothra: add <strike> support

---
 sys/src/cmd/mothra/html.h           |  3 +++
 sys/src/cmd/mothra/html.syntax.c    |  2 ++
 sys/src/cmd/mothra/libpanel/panel.h |  1 +
 sys/src/cmd/mothra/libpanel/rtext.c | 38 +++++++++++++++++++++++------
 sys/src/cmd/mothra/rdhtml.c         | 15 +++++++++---
 5 files changed, 48 insertions(+), 11 deletions(-)

diff --git a/sys/src/cmd/mothra/html.h b/sys/src/cmd/mothra/html.h
index f486755be..951feeeb9 100644
--- a/sys/src/cmd/mothra/html.h
+++ b/sys/src/cmd/mothra/html.h
@@ -34,6 +34,7 @@ struct Stack{
 	int number;		/* paragraph number */
 	int ismap;		/* flag of <img> */
 	int isscript;		/* inside <script> */
+	int strike;		/* flag of <strike> */
 	int width;		/* size of image */
 	int height;
 	char image[NNAME];	/* arg of <img> */
@@ -183,10 +184,12 @@ enum{
 	Tag_p,
 	Tag_plaintext,
 	Tag_pre,
+	Tag_s,
 	Tag_samp,
 	Tag_script,
 	Tag_select,
 	Tag_span,
+	Tag_strike,
 	Tag_strong,
 	Tag_style,
 	Tag_source,
diff --git a/sys/src/cmd/mothra/html.syntax.c b/sys/src/cmd/mothra/html.syntax.c
index 87e44016d..a6912d329 100644
--- a/sys/src/cmd/mothra/html.syntax.c
+++ b/sys/src/cmd/mothra/html.syntax.c
@@ -62,10 +62,12 @@ Tag tag[]={
 [Tag_p]		"p",		NOEND,	/* OPTEND */
 [Tag_plaintext]	"plaintext",	NOEND,
 [Tag_pre]	"pre",		END,
+[Tag_s]		"s",		END,
 [Tag_samp]	"samp",		END,
 [Tag_script]	"script",	END,
 [Tag_select]	"select",	END,
 [Tag_span]	"span",		END,
+[Tag_strike]	"strike",	END,
 [Tag_strong]	"strong",	END,
 [Tag_style]	"style",	END,
 [Tag_source]	"source",	NOEND,
diff --git a/sys/src/cmd/mothra/libpanel/panel.h b/sys/src/cmd/mothra/libpanel/panel.h
index 8c9680c10..7c06bc2fd 100644
--- a/sys/src/cmd/mothra/libpanel/panel.h
+++ b/sys/src/cmd/mothra/libpanel/panel.h
@@ -104,6 +104,7 @@ struct Panel{
 /* Rtext.flags */
 #define PL_HOT		1
 #define PL_SEL		2
+#define PL_STR		4
 
 Panel *plkbfocus;			/* the panel in keyboard focus */
 
diff --git a/sys/src/cmd/mothra/libpanel/rtext.c b/sys/src/cmd/mothra/libpanel/rtext.c
index 68bccfad3..92f195633 100644
--- a/sys/src/cmd/mothra/libpanel/rtext.c
+++ b/sys/src/cmd/mothra/libpanel/rtext.c
@@ -168,7 +168,7 @@ void pl_stuffbitmap(Panel *p, Image *b){
 
 void pl_rtdraw(Image *b, Rectangle r, Rtext *t, Point offs){
 	static Image *backup;
-	Point lp;
+	Point lp, sp;
 	Rectangle dr;
 	Image *bb;
 
@@ -181,6 +181,7 @@ void pl_rtdraw(Image *b, Rectangle r, Rtext *t, Point offs){
 		b=backup;
 	pl_clr(b, r);
 	lp=ZP;
+	sp=ZP;
 	offs=subpt(r.min, offs);
 	for(;t;t=t->next) if(!eqrect(t->r, Rect(0,0,0,0))){
 		dr=rectaddpt(t->r, offs);
@@ -191,6 +192,14 @@ void pl_rtdraw(Image *b, Rectangle r, Rtext *t, Point offs){
 			if(t->b){
 				draw(b, insetrect(dr, BORD), t->b, 0, t->b->r.min);
 				if(t->flags&PL_HOT) border(b, dr, 1, display->black, ZP);
+				if(t->flags&PL_STR) {
+					line(b, Pt(dr.min.x, dr.min.y), Pt(dr.max.x, dr.max.y),
+						Endsquare, Endsquare, 0,
+						display->black, ZP);
+					line(b, Pt(dr.min.x, dr.max.y), Pt(dr.max.x, dr.min.y),
+						Endsquare, Endsquare, 0,
+						display->black, ZP);
+				}
 				if(t->flags&PL_SEL)
 					pl_highlight(b, dr);
 			}
@@ -204,17 +213,30 @@ void pl_rtdraw(Image *b, Rectangle r, Rtext *t, Point offs){
 				string(b, dr.min, display->black, ZP, t->font, t->text);
 				if(t->flags&PL_SEL)
 					pl_highlight(b, dr);
+				if(t->flags&PL_STR){
+					int y = dr.max.y - t->font->height/2;
+					if(sp.y != y)
+						sp = Pt(dr.min.x, y);
+					line(b, sp, Pt(dr.max.x, y),
+						Endsquare, Endsquare, 0,
+						display->black, ZP);
+					sp = Pt(dr.max.x, y);
+				} else
+					sp = ZP;
 				if(t->flags&PL_HOT){
-					if(lp.y+1 != dr.max.y)
-						lp = Pt(dr.min.x, dr.max.y-1);
-					line(b, lp, Pt(dr.max.x, dr.max.y-1),
+					int y = dr.max.y - 1;
+					if(lp.y != y)
+						lp = Pt(dr.min.x, y);
+					line(b, lp, Pt(dr.max.x, y),
 						Endsquare, Endsquare, 0,
 						display->black, ZP);
-					lp = Pt(dr.max.x, dr.max.y-1);
-					continue;
-				}
+					lp = Pt(dr.max.x, y);
+				} else
+					lp = ZP;
+				continue;
 			}
-			lp=ZP;
+			lp = ZP;
+			sp = ZP;
 		}
 	}
 	if(b!=bb)
diff --git a/sys/src/cmd/mothra/rdhtml.c b/sys/src/cmd/mothra/rdhtml.c
index cf13c213f..aeee19429 100644
--- a/sys/src/cmd/mothra/rdhtml.c
+++ b/sys/src/cmd/mothra/rdhtml.c
@@ -85,7 +85,7 @@ int strtolength(Hglob *g, int dir, char *str){
 
 void pl_htmloutput(Hglob *g, int nsp, char *s, Field *field){
 	Fontdata *f;
-	int space, indent;
+	int space, indent, flags;
 	Action *ap;
 	if(g->state->tag==Tag_title
 /*	|| g->state->tag==Tag_textarea */
@@ -139,8 +139,12 @@ void pl_htmloutput(Hglob *g, int nsp, char *s, Field *field){
 			space=1000000;
 		}
 	}
-	plrtstr(&g->dst->text, space, indent, f->font, strdup(s),
-		g->state->link[0] ? PL_HOT : 0, ap);
+	flags = 0;
+	if(g->state->link[0])
+		flags |= PL_HOT;
+	if(g->state->strike)
+		flags |= PL_STR;
+	plrtstr(&g->dst->text, space, indent, f->font, strdup(s), flags, ap);
 	g->para=0;
 	g->linebrk=0;
 	g->dst->changed=1;
@@ -691,6 +695,7 @@ void plrdhtml(char *name, int fd, Www *dst){
 	g.state->indent=25;
 	g.state->ismap=0;
 	g.state->isscript=0;
+	g.state->strike=0;
 	g.state->width=0;
 	g.state->height=0;
 	g.dst=dst;
@@ -873,6 +878,10 @@ void plrdhtml(char *name, int fd, Www *dst){
 		case Tag_strong:
 			g.state->font=BOLD;
 			break;
+		case Tag_s:
+		case Tag_strike:
+			g.state->strike=1;
+			break;
 		case Tag_blockquot:
 			g.spacc=0;
 			g.linebrk=1;
-- 
2.44.0