Already better than CSS because I can center stuff.

combat_ui.cpp

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

lel.cpp

@@ -1,6 +1,7 @@
 #include "lel.hpp"
 #include <fmt/core.h>
 #include "dbc.hpp"
+#include <numeric>
 
 #include "lel_parser.cpp"
 
@@ -58,6 +59,10 @@ namespace lel {
     cur.expand = true;
   }
 
+  void Parser::center() {
+    cur.center = true;
+  }
+
   void Parser::finalize() {
     dbc::check(columns > 0, "columns are 0");
     dbc::check(rows > 0, "rows are 0");
@@ -75,12 +80,11 @@ namespace lel {
       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);
 
-      if(cell.right) {
-        cell.x += cell_width - cell.w;
-      }
-
-      if(cell.bottom) {
-        cell.y += cell_height - cell.h;
+      if(cell.right) cell.x += cell_width - cell.w;
+      if(cell.bottom) cell.y += cell_height - cell.h;
+      if(cell.center) {
+        cell.x = std::midpoint(cell.x, cell.x + cell_width) - cell.w / 2;
+        cell.y = std::midpoint(cell.y, cell.y + cell_height) - cell.h / 2;
       }
 
       dbc::check(cell.h > 0, fmt::format("invalid height cell {}", name));

lel.hpp

@@ -16,6 +16,7 @@ namespace lel {
     bool right = false;
     bool bottom = false;
     bool expand = false;
+    bool center = false;
 
     Cell(int col, int row) : col(col), row(row) {}
   };
@@ -41,6 +42,7 @@ namespace lel {
     void setheight(int height);
     void expand();
     void reset();
+    void center();
     bool parse(std::string input);
     void finalize();
   };

lel_parser.cpp

@@ -7,7 +7,7 @@
 namespace lel {
 
 
-#line 36 "lel_parser.rl"
+#line 38 "lel_parser.rl"
 
 
 
@@ -15,33 +15,34 @@ 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, 2, 0, 7, 2, 0, 
-	8, 2, 4, 1, 2, 4, 5
+	10, 1, 11, 1, 12, 2, 0, 7, 
+	2, 0, 8, 2, 4, 1, 2, 4, 
+	5
 };
 
 static const char _Parser_key_offsets[] = {
-	0, 0, 4, 18, 20, 24, 35, 47, 
-	52, 54, 57
+	0, 0, 4, 19, 21, 25, 37, 49, 
+	54, 56, 59
 };
 
 static const char _Parser_trans_keys[] = {
 	32, 91, 9, 13, 32, 40, 42, 46, 
-	60, 62, 94, 95, 9, 13, 65, 90, 
-	97, 122, 48, 57, 41, 44, 48, 57, 
-	40, 42, 46, 60, 62, 94, 95, 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
+	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
 };
 
 static const char _Parser_single_lengths[] = {
-	0, 2, 8, 0, 2, 7, 4, 3, 
+	0, 2, 7, 0, 2, 6, 4, 3, 
 	0, 1, 2
 };
 
 static const char _Parser_range_lengths[] = {
-	0, 1, 3, 1, 1, 2, 4, 1, 
+	0, 1, 4, 1, 1, 3, 4, 1, 
 	1, 1, 1
 };
 
@@ -52,24 +53,26 @@ static const char _Parser_index_offsets[] = {
 
 static const char _Parser_indicies[] = {
 	0, 2, 0, 1, 3, 4, 5, 6, 
-	7, 7, 6, 8, 3, 8, 8, 1, 
-	9, 1, 10, 11, 12, 1, 4, 5, 
-	6, 7, 7, 6, 8, 8, 8, 1, 
-	13, 15, 14, 16, 13, 14, 14, 14, 
-	1, 17, 18, 19, 17, 1, 20, 1, 
-	21, 22, 1, 23, 2, 23, 1, 0
+	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
 };
 
 static const char _Parser_trans_targs[] = {
 	1, 0, 2, 2, 3, 5, 5, 5, 
-	6, 4, 5, 8, 4, 7, 6, 10, 
-	2, 7, 10, 2, 9, 5, 9, 10
+	5, 6, 4, 5, 8, 4, 7, 6, 
+	10, 2, 7, 10, 2, 9, 5, 9, 
+	10
 };
 
 static const char _Parser_trans_actions[] = {
 	0, 0, 3, 0, 0, 13, 5, 11, 
-	17, 15, 19, 19, 0, 7, 0, 28, 
-	25, 0, 9, 1, 15, 22, 0, 0
+	15, 19, 17, 21, 21, 0, 7, 0, 
+	30, 27, 0, 9, 1, 17, 24, 0, 
+	0
 };
 
 static const int Parser_start = 1;
@@ -79,7 +82,7 @@ static const int Parser_error = 0;
 static const int Parser_en_main = 1;
 
 
-#line 39 "lel_parser.rl"
+#line 41 "lel_parser.rl"
 
 bool Parser::parse(std::string input) {
   reset();
@@ -91,14 +94,14 @@ bool Parser::parse(std::string input) {
   std::string tk;
 
   
-#line 86 "lel_parser.cpp"
+#line 89 "lel_parser.cpp"
 	{
 	cs = Parser_start;
 	}
 
-#line 50 "lel_parser.rl"
+#line 52 "lel_parser.rl"
   
-#line 89 "lel_parser.cpp"
+#line 92 "lel_parser.cpp"
 	{
 	int _klen;
 	unsigned int _trans;
@@ -213,14 +216,18 @@ _match:
 	{ expand(); }
 	break;
 	case 10:
-#line 29 "lel_parser.rl"
-	{ start = p; }
+#line 22 "lel_parser.rl"
+	{ center(); }
 	break;
 	case 11:
-#line 32 "lel_parser.rl"
+#line 31 "lel_parser.rl"
+	{ start = p; }
+	break;
+	case 12:
+#line 34 "lel_parser.rl"
 	{start = p;}
 	break;
-#line 198 "lel_parser.cpp"
+#line 204 "lel_parser.cpp"
 		}
 	}
 
@@ -233,7 +240,7 @@ _again:
 	_out: {}
 	}
 
-#line 51 "lel_parser.rl"
+#line 53 "lel_parser.rl"
 
   bool good = pe - p == 0;
   if(good) {

lel_parser.rl

@@ -19,16 +19,18 @@ namespace lel {
   action setwidth { setwidth(std::stoi(tk)); }
   action setheight { setheight(std::stoi(tk)); }
   action expand { expand(); }
+  action center { center(); }
 
   col = "|" $col;
   ltab = "[" $ltab;
   rtab = "]" $row;
   valign = ("^" | ".") $valign;
   expand = "*" $expand;
+  center = "=" $center;
   halign = ("<" | ">") $align;
   number =  digit+ >{ start = fpc; } %token;
   setw = ("(" number %setwidth ("," number %setheight)? ")") ;
-  modifiers = (expand | valign | halign | setw);
+  modifiers = (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

@@ -14,7 +14,7 @@ TEST_CASE("test basic ops", "[lel]") {
      "[ label_1         | label3      | test1]"
      "[ *(300,300)text1 | (150)people | ^test2]"
      "[ >label2         | _           | .test3]"
-     "[ message         | buttons     | test4]");
+     "[ =message         | buttons     | test4]");
 
   REQUIRE(good);
 
@@ -27,6 +27,7 @@ TEST_CASE("test basic ops", "[lel]") {
   REQUIRE(parser.cells.at("text1").h == 300);
   REQUIRE(parser.cells.at("people").expand == false);
   REQUIRE(parser.cells.at("message").expand == false);
+  REQUIRE(parser.cells.at("message").center == true);
 
   for(auto& [name, cell] : parser.cells) {
     REQUIRE(cell.w > 0);