Rewrite how the chessboard works.

[remoteglot] / www / js / remoteglot.js

diff --git a/www/js/remoteglot.js b/www/js/remoteglot.js
index c2bf8ff482b7f69cb07bc09c4b1accd0659850e9..f65dd98ed038240e06abd04f6ee40ebc6288d54a 100644 (file)
--- a/www/js/remoteglot.js
+++ b/www/js/remoteglot.js
@@ -504,12 +504,11 @@ function position_arrow(arrow) {
                return;
        }
 
-       let board_width = parseInt(document.querySelector(".board-b72b1").style.width, 10);
-       let zoom_factor = board_width / 400.0;
-       let line_width = arrow.line_width * zoom_factor;
-       let arrow_size = arrow.arrow_size * zoom_factor;
+       // We always draw as if the board is 400x400, the viewBox will adjust that for us
+       let line_width = arrow.line_width;
+       let arrow_size = arrow.arrow_size;
 
-       let square_width = board_width / 8;
+       let square_width = 400 / 8;
        let from_y, to_y, from_x, to_x;
        if (board.orientation() === 'black') {
                from_y = (arrow.from_row + 0.5)*square_width;
@@ -526,10 +525,9 @@ function position_arrow(arrow) {
        let SVG_NS = "http://www.w3.org/2000/svg";
        let XHTML_NS = "http://www.w3.org/1999/xhtml";
        let svg = document.createElementNS(SVG_NS, "svg");
-       svg.setAttribute("width", board_width);
-       svg.setAttribute("height", board_width);
-       svg.setAttribute("style", "position: absolute");
-       svg.setAttribute("position", "absolute");
+       svg.setAttribute("width", "100%");
+       svg.setAttribute("height", "100%");
+       svg.setAttribute("viewBox", "0 0 400 400");
        svg.setAttribute("version", "1.1");
        svg.setAttribute("class", "c1");
        svg.setAttribute("xmlns", XHTML_NS);
@@ -570,8 +568,9 @@ function position_arrow(arrow) {
        head.setAttribute("fill", arrow.fg_color);
        svg.appendChild(head);
 
-       svg.style.top = '2px';  /* Border for .board-b72b1. */
-       svg.style.left = '2px';
+       svg.style.position = 'absolute';
+       svg.style.top = '0px';  /* Border for .board-b72b1. */
+       svg.style.left = '0px';
        svg.style.pointerEvents = 'none';
        document.getElementById('board').appendChild(svg);
        arrow.svg = svg;
@@ -2077,12 +2076,12 @@ function onDragStart(source, piece, position, orientation) {
 }
 
 function mousedownSquare(e) {
-       if (!e.target || !e.target.closest('.square-55d63')) {
+       if (!e.target || !e.target.getAttribute('data-square')) {
                return;
        }
 
        reverse_dragging_from = null;
-       let square = e.target.closest('.square-55d63').getAttribute('data-square');
+       let square = e.target.getAttribute('data-square');
 
        let pseudogame = new Chess(display_fen);
        if (pseudogame.game_over() === true) {
@@ -2107,13 +2106,13 @@ function mousedownSquare(e) {
 }
 
 function mouseupSquare(e) {
-       if (!e.target || !e.target.closest('.square-55d63')) {
+       if (!e.target || !e.target.getAttribute('data-square')) {
                return;
        }
        if (reverse_dragging_from === null) {
                return;
        }
-       let source = e.target.closest('.square-55d63').getAttribute('data-square');
+       let source = e.target.getAttribute('data-square');
        let target = reverse_dragging_from;
        reverse_dragging_from = null;
        if (onDrop(source, target) !== 'snapback') {