No need for separate len_bytes field in wrap_box

3 files changed, 7 insertions, 5 deletions

diff --git a/src/shape.c b/src/shape.c
index ccfe9e1..f483510 100644
--- a/src/shape.c
+++ b/src/shape.c
@@ -50,11 +50,14 @@ void shape_box(struct wrap_box *box)
 {
 	PangoRectangle rect;
 	const char *tp;
+	const char *ep;
 
 	tp = g_utf8_offset_to_pointer(sc_block_contents(box->scblock),
 	                              box->offs_char);
+	ep = g_utf8_offset_to_pointer(sc_block_contents(box->scblock),
+	                              box->offs_char+box->len_chars);
 
-	pango_shape(tp, box->len_bytes, &box->analysis, box->glyphs);
+	pango_shape(tp, ep-tp, &box->analysis, box->glyphs);
 
 	pango_glyph_string_extents(box->glyphs, box->font, NULL, &rect);
 
@@ -98,7 +101,6 @@ static void add_wrap_box(gpointer vi, gpointer vb)
 	box->scblock = bas->bl;
 	box->offs_char = g_utf8_pointer_to_offset(tp, tp+offs_bytes);
 	box->len_chars = g_utf8_strlen(tp+offs_bytes, item->length);
-	box->len_bytes = item->length;
 
 	col = sc_interp_get_fgcol(bas->scin);
 	box->col[0] = col[0];  /* Red */
diff --git a/src/wrap.c b/src/wrap.c
index fb4173d..63ca84f 100644
--- a/src/wrap.c
+++ b/src/wrap.c
@@ -125,6 +125,7 @@ void get_cursor_pos(struct wrap_box *box, int pos,
 	int p;
 	const char *block_text;
 	const char *box_text;
+	const char *ep;
 
 	*xposd = 0.0;
 	*yposd = 0.0;
@@ -144,9 +145,9 @@ void get_cursor_pos(struct wrap_box *box, int pos,
 		case WRAP_BOX_PANGO :
 		block_text = sc_block_contents(box->scblock);
 		box_text = g_utf8_offset_to_pointer(block_text, box->offs_char);
-		/* cast because this function is not const-clean */
+		ep = g_utf8_offset_to_pointer(box_text, box->len_chars);
 		pango_glyph_string_index_to_x(box->glyphs, (char *)box_text,
-		                              box->len_bytes, &box->analysis,
+		                              ep - box_text, &box->analysis,
 			                      pos, FALSE, &p);
 		*xposd += pango_units_to_double(p);
 		break;
diff --git a/src/wrap.h b/src/wrap.h
index fac697f..b15ea3f 100644
--- a/src/wrap.h
+++ b/src/wrap.h
@@ -78,7 +78,6 @@ struct wrap_box
 	PangoGlyphString *glyphs;
 	PangoFont *font;
 	double col[4];  /* rgba colour */
-	size_t len_bytes;
 	PangoAnalysis analysis;
 	int len_chars;