patch 8.1.0579: cannot attach properties to textv8.1.0579

Problem:    Cannot attach properties to text.
Solution:   First part of adding text properties.

1 files changed, 103 insertions, 1 deletions

diff --git a/src/screen.c b/src/screen.c
index 1cf90ee05..4a61807c9 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -3128,6 +3128,15 @@ win_line(
     int		draw_color_col = FALSE;	/* highlight colorcolumn */
     int		*color_cols = NULL;	/* pointer to according columns array */
 #endif
+#ifdef FEAT_TEXT_PROP
+    int		text_prop_count;
+    int		text_prop_next = 0;	// next text property to use
+    textprop_T	*text_props = NULL;
+    int		*text_prop_idxs = NULL;
+    int		text_props_active = 0;
+    proptype_T  *text_prop_type = NULL;
+    int		text_prop_attr = 0;
+#endif
 #ifdef FEAT_SPELL
     int		has_spell = FALSE;	/* this buffer has spell checking */
 # define SPWORDLEN 150
@@ -3144,7 +3153,7 @@ win_line(
     static linenr_T capcol_lnum = 0;	/* line number where "cap_col" used */
     int		cur_checked_col = 0;	/* checked column for current line */
 #endif
-    int		extra_check = 0;	// has syntax or linebreak
+    int		extra_check = 0;	// has extra highlighting
 #ifdef FEAT_MBYTE
     int		multi_attr = 0;		/* attributes desired by multibyte */
     int		mb_l = 1;		/* multi-byte byte length */
@@ -3784,6 +3793,30 @@ win_line(
     }
 #endif
 
+#ifdef FEAT_TEXT_PROP
+    {
+	char_u *prop_start;
+
+	text_prop_count = get_text_props(wp->w_buffer, lnum,
+							   &prop_start, FALSE);
+	if (text_prop_count > 0)
+	{
+	    // Make a copy of the properties, so that they are properly
+	    // aligned.
+	    text_props = (textprop_T *)alloc(
+					 text_prop_count * sizeof(textprop_T));
+	    if (text_props != NULL)
+		mch_memmove(text_props, prop_start,
+					 text_prop_count * sizeof(textprop_T));
+
+	    // Allocate an array for the indexes.
+	    text_prop_idxs = (int *)alloc(text_prop_count * sizeof(int));
+	    area_highlighting = TRUE;
+	    extra_check = TRUE;
+	}
+    }
+#endif
+
     off = (unsigned)(current_ScreenLine - ScreenLines);
     col = 0;
 #ifdef FEAT_RIGHTLEFT
@@ -4283,6 +4316,11 @@ win_line(
 	    else
 	    {
 		attr_pri = FALSE;
+#ifdef FEAT_TEXT_PROP
+		if (text_prop_type != NULL)
+		    char_attr = text_prop_attr;
+		else
+#endif
 #ifdef FEAT_SYN_HL
 		if (has_syntax)
 		    char_attr = syntax_attr;
@@ -4663,6 +4701,66 @@ win_line(
 		}
 #endif
 
+#ifdef FEAT_TEXT_PROP
+		if (text_props != NULL)
+		{
+		    int pi;
+
+		    // Check if any active property ends.
+		    for (pi = 0; pi < text_props_active; ++pi)
+		    {
+			int tpi = text_prop_idxs[pi];
+
+			if (col >= text_props[tpi].tp_col - 1
+						      + text_props[tpi].tp_len)
+			{
+			    if (pi + 1 < text_props_active)
+				mch_memmove(text_prop_idxs + pi,
+					    text_prop_idxs + pi + 1,
+					    sizeof(int)
+					     * (text_props_active - (pi + 1)));
+			    --text_props_active;
+			    --pi;
+			}
+		    }
+
+		    // Add any text property that starts in this column.
+		    while (text_prop_next < text_prop_count
+			       && col >= text_props[text_prop_next].tp_col - 1)
+			text_prop_idxs[text_props_active++] = text_prop_next++;
+
+		    text_prop_type = NULL;
+		    if (text_props_active > 0)
+		    {
+			int max_priority = INT_MIN;
+			int max_col = 0;
+
+			// Get the property type with the highest priority
+			// and/or starting last.
+			for (pi = 0; pi < text_props_active; ++pi)
+			{
+			    int		tpi = text_prop_idxs[pi];
+			    proptype_T  *pt;
+
+			    pt = text_prop_type_by_id(
+				    curwin->w_buffer, text_props[tpi].tp_type);
+			    if (pt != NULL
+				    && (pt->pt_priority > max_priority
+					|| (pt->pt_priority == max_priority
+					&& text_props[tpi].tp_col >= max_col)))
+			    {
+				text_prop_type = pt;
+				max_priority = pt->pt_priority;
+				max_col = text_props[tpi].tp_col;
+			    }
+			}
+			if (text_prop_type != NULL)
+			    text_prop_attr =
+					 syn_id2attr(text_prop_type->pt_hl_id);
+		    }
+		}
+#endif
+
 #ifdef FEAT_SPELL
 		/* Check spelling (unless at the end of the line).
 		 * Only do this when there is no syntax highlighting, the
@@ -6025,6 +6123,10 @@ win_line(
 	cap_col = 0;
     }
 #endif
+#ifdef FEAT_TEXT_PROP
+    vim_free(text_props);
+    vim_free(text_prop_idxs);
+#endif
 
     vim_free(p_extra_free);
     return row;