You can now prefix a size with % and it will do percentage for the size, even over 100.

combat_ui.cpp

@@ -9,7 +9,7 @@ namespace gui {
       $level(level)
   {
     bool good = $layout.parse(
-        "[attack1 | =(90)attack2 | attack3 | heal]"
+        "[attack1 | attack2 | attack3 | heal]"
         );
 
     dbc::check(good, "failed to parse combat layout");

lel.cpp

@@ -40,6 +40,11 @@ namespace lel {
       cell.max_w = cell.max_w == 0 ? cell_width : cell.max_w;
       cell.max_h = cell.max_h == 0 ? cell_height : cell.max_h;
 
+      if(cell.percent) {
+        cell.max_w = cell.max_w * 0.01 * cell_width;
+        cell.max_h = cell.max_h * 0.01 * cell_height;
+      }
+
       cell.w = cell.expand ? std::min(cell.max_w, grid_w) : std::min(cell_width, cell.max_w);
       cell.h = cell.expand ? std::min(cell.max_h, grid_h) : std::min(cell_height, cell.max_h);
 

lel.hpp

@@ -17,6 +17,7 @@ namespace lel {
     bool bottom = false;
     bool expand = false;
     bool center = false;
+    bool percent = false;
 
     Cell(int col, int row) : col(col), row(row) {}
   };

lel_parser.cpp

@@ -7,7 +7,7 @@
 namespace lel {
 
 
-#line 42 "lel_parser.rl"
+#line 44 "lel_parser.rl"
 
 
 
@@ -15,64 +15,66 @@ namespace lel {
 static const char _Parser_actions[] = {
 	0, 1, 1, 1, 2, 1, 3, 1, 
 	4, 1, 5, 1, 6, 1, 9, 1, 
-	10, 1, 11, 1, 12, 2, 0, 7, 
-	2, 0, 8, 2, 4, 1, 2, 4, 
-	5
+	10, 1, 11, 1, 12, 1, 13, 2, 
+	0, 7, 2, 0, 8, 2, 4, 1, 
+	2, 4, 5
 };
 
 static const char _Parser_key_offsets[] = {
-	0, 0, 4, 19, 21, 25, 37, 49, 
-	54, 56, 59
+	0, 0, 4, 20, 33, 35, 39, 41, 
+	44, 56, 61
 };
 
 static const char _Parser_trans_keys[] = {
-	32, 91, 9, 13, 32, 40, 42, 46, 
-	61, 94, 95, 9, 13, 60, 62, 65, 
-	90, 97, 122, 48, 57, 41, 44, 48, 
-	57, 40, 42, 46, 61, 94, 95, 60, 
-	62, 65, 90, 97, 122, 32, 93, 95, 
-	124, 9, 13, 48, 57, 65, 90, 97, 
-	122, 32, 93, 124, 9, 13, 48, 57, 
-	41, 48, 57, 32, 91, 9, 13, 0
+	32, 91, 9, 13, 32, 37, 40, 42, 
+	46, 61, 94, 95, 9, 13, 60, 62, 
+	65, 90, 97, 122, 37, 40, 42, 46, 
+	61, 94, 95, 60, 62, 65, 90, 97, 
+	122, 48, 57, 41, 44, 48, 57, 48, 
+	57, 41, 48, 57, 32, 93, 95, 124, 
+	9, 13, 48, 57, 65, 90, 97, 122, 
+	32, 93, 124, 9, 13, 32, 91, 9, 
+	13, 0
 };
 
 static const char _Parser_single_lengths[] = {
-	0, 2, 7, 0, 2, 6, 4, 3, 
-	0, 1, 2
+	0, 2, 8, 7, 0, 2, 0, 1, 
+	4, 3, 2
 };
 
 static const char _Parser_range_lengths[] = {
-	0, 1, 4, 1, 1, 3, 4, 1, 
-	1, 1, 1
+	0, 1, 4, 3, 1, 1, 1, 1, 
+	4, 1, 1
 };
 
 static const char _Parser_index_offsets[] = {
-	0, 0, 4, 16, 18, 22, 32, 41, 
-	46, 48, 51
+	0, 0, 4, 17, 28, 30, 34, 36, 
+	39, 48, 53
 };
 
 static const char _Parser_indicies[] = {
 	0, 2, 0, 1, 3, 4, 5, 6, 
-	8, 6, 9, 3, 7, 9, 9, 1, 
-	10, 1, 11, 12, 13, 1, 4, 5, 
-	6, 8, 6, 9, 7, 9, 9, 1, 
-	14, 16, 15, 17, 14, 15, 15, 15, 
-	1, 18, 19, 20, 18, 1, 21, 1, 
-	22, 23, 1, 24, 2, 24, 1, 0
+	7, 9, 7, 10, 3, 8, 10, 10, 
+	1, 4, 5, 6, 7, 9, 7, 10, 
+	8, 10, 10, 1, 11, 1, 12, 13, 
+	14, 1, 15, 1, 16, 17, 1, 18, 
+	20, 19, 21, 18, 19, 19, 19, 1, 
+	22, 23, 24, 22, 1, 25, 2, 25, 
+	1, 0
 };
 
 static const char _Parser_trans_targs[] = {
-	1, 0, 2, 2, 3, 5, 5, 5, 
-	5, 6, 4, 5, 8, 4, 7, 6, 
-	10, 2, 7, 10, 2, 9, 5, 9, 
-	10
+	1, 0, 2, 2, 3, 4, 3, 3, 
+	3, 3, 8, 5, 3, 6, 5, 7, 
+	3, 7, 9, 8, 10, 2, 9, 10, 
+	2, 10
 };
 
 static const char _Parser_trans_actions[] = {
-	0, 0, 3, 0, 0, 13, 5, 11, 
-	15, 19, 17, 21, 21, 0, 7, 0, 
-	30, 27, 0, 9, 1, 17, 24, 0, 
-	0
+	0, 0, 3, 0, 17, 0, 13, 5, 
+	11, 15, 21, 19, 23, 23, 0, 19, 
+	26, 0, 7, 0, 32, 29, 0, 9, 
+	1, 0
 };
 
 static const int Parser_start = 1;
@@ -82,7 +84,7 @@ static const int Parser_error = 0;
 static const int Parser_en_main = 1;
 
 
-#line 45 "lel_parser.rl"
+#line 47 "lel_parser.rl"
 
 bool Parser::parse(std::string input) {
   reset();
@@ -94,14 +96,14 @@ bool Parser::parse(std::string input) {
   std::string tk;
 
   
-#line 89 "lel_parser.cpp"
+#line 91 "lel_parser.cpp"
 	{
 	cs = Parser_start;
 	}
 
-#line 56 "lel_parser.rl"
+#line 58 "lel_parser.rl"
   
-#line 92 "lel_parser.cpp"
+#line 94 "lel_parser.cpp"
 	{
 	int _klen;
 	unsigned int _trans;
@@ -224,14 +226,18 @@ _match:
 	{ cur.center = true; }
 	break;
 	case 11:
-#line 35 "lel_parser.rl"
-	{ start = p; }
+#line 27 "lel_parser.rl"
+	{ cur.percent = true; }
 	break;
 	case 12:
-#line 38 "lel_parser.rl"
+#line 37 "lel_parser.rl"
+	{ start = p; }
+	break;
+	case 13:
+#line 40 "lel_parser.rl"
 	{start = p;}
 	break;
-#line 208 "lel_parser.cpp"
+#line 213 "lel_parser.cpp"
 		}
 	}
 
@@ -244,7 +250,7 @@ _again:
 	_out: {}
 	}
 
-#line 57 "lel_parser.rl"
+#line 59 "lel_parser.rl"
 
   bool good = pe - p == 0;
   if(good) {

lel_parser.rl

@@ -24,6 +24,7 @@ namespace lel {
   action setheight { cur.max_h = std::stoi(tk); }
   action expand { cur.expand = true; }
   action center { cur.center = true; }
+  action percent { cur.percent = true; }
 
   col = "|" $col;
   ltab = "[" $ltab;
@@ -31,10 +32,11 @@ namespace lel {
   valign = ("^" | ".") $valign;
   expand = "*" $expand;
   center = "=" $center;
+  percent = "%" $percent;
   halign = ("<" | ">") $align;
   number =  digit+ >{ start = fpc; } %token;
   setw = ("(" number %setwidth ("," number %setheight)? ")") ;
-  modifiers = (center | expand | valign | halign | setw);
+  modifiers = (percent | center | expand | valign | halign | setw);
   id = modifiers* ((alpha | '_')+ :>> (alnum | '_')*) >{start = fpc;} %id;
   row = space* ltab space* id space* (col space* id space*)* space* rtab space*;
 

tests/lel.cpp

@@ -12,7 +12,7 @@ TEST_CASE("test basic ops", "[lel]") {
 
   bool good = parser.parse(
      "[ label_1         | label3      | test1]"
-     "[ *(300,300)text1 | (150)people | ^test2]"
+     "[ *(300,300)text1 | %(150)people | ^test2]"
      "[ >label2         | _           | .test3]"
      "[ =message         | buttons     | test4]");