Add a sparkline/bar display for score history.

[remoteglot] / www / js / remoteglot.js

diff --git a/www/js/remoteglot.js b/www/js/remoteglot.js
index 43b2e1ddbb7c304b2450349fbaef79e23e355d92..440419fd0062eb702e5f928655b1e22b0092ef13 100644 (file)
--- a/www/js/remoteglot.js
+++ b/www/js/remoteglot.js
@@ -692,10 +692,9 @@ var update_board = function(current_data, display_data) {
        if (display_data) {
                // Displaying some non-current position, pick out the last move
                // from the history. This will work even if the fetch failed.
-               last_move = format_move_with_number(
+               last_move = format_halfmove_with_number(
                        current_display_line.pretty_pv[current_display_move],
-                       Math.floor((current_display_move + 1) / 2) + 1,
-                       (current_display_move % 2 == 1));
+                       current_display_move + 1);
                headline += ' after ' + last_move;
        } else if (data['position']['last_move'] !== 'none') {
                last_move = format_move_with_number(
@@ -853,6 +852,69 @@ var update_board = function(current_data, display_data) {
        toplay = data['position']['toplay'];
        refutation_lines = data['refutation_lines'];
        update_refutation_lines();
+
+       // Update the sparkline last, since its size depends on how everything else reflowed.
+       update_sparkline(data);
+}
+
+var update_sparkline = function(data) {
+       if (data && data['score_history']) {
+               var first_move_num = undefined;
+               for (var halfmove_num in data['score_history']) {
+                       halfmove_num = parseInt(halfmove_num);
+                       if (first_move_num === undefined || halfmove_num < first_move_num) {
+                               first_move_num = halfmove_num;
+                       }
+               }
+               if (first_move_num !== undefined) {
+                       var last_move_num = data['position']['move_num'] * 2 - 3;
+                       if (data['position']['toplay'] === 'B') {
+                               ++last_move_num;
+                       }
+
+                       // Possibly truncate some moves if we don't have enough width.
+                       // FIXME: Sometimes width() for #scorecontainer (and by extent,
+                       // #scoresparkcontainer) on Chrome for mobile seems to start off
+                       // at something very small, and then suddenly snap back into place.
+                       // Figure out why.
+                       var max_moves = Math.floor($("#scoresparkcontainer").width() / 5) - 5;
+                       if (last_move_num - first_move_num > max_moves) {
+                               first_move_num = last_move_num - max_moves;
+                       }
+
+                       var min_score = -100;
+                       var max_score = 100;
+                       var last_score = null;
+                       var scores = [];
+                       for (var halfmove_num = first_move_num; halfmove_num <= last_move_num; ++halfmove_num) {
+                               if (data['score_history'][halfmove_num]) {
+                                       var score = data['score_history'][halfmove_num][0];
+                                       if (score < min_score) min_score = score;
+                                       if (score > max_score) max_score = score;
+                                       last_score = data['score_history'][halfmove_num][0];
+                               }
+                               scores.push(last_score);
+                       }
+                       if (data['plot_score']) {
+                               scores.push(data['plot_score']);
+                       }
+                       // FIXME: at some widths, calling sparkline() seems to push
+                       // #scorecontainer under the board.
+                       $("#scorespark").sparkline(scores, {
+                               type: 'bar',
+                               zeroColor: 'gray',
+                               chartRangeMin: min_score,
+                               chartRangeMax: max_score,
+                               tooltipFormatter: function(sparkline, options, fields) {
+                                       return format_tooltip(data, fields[0].offset + first_move_num);
+                               }
+                       });
+               } else {
+                       $("#scorespark").text("");
+               }
+       } else {
+               $("#scorespark").text("");
+       }
 }
 
 /**
@@ -1011,6 +1073,46 @@ var format_move_with_number = function(move, move_num, white_to_play) {
        return ret;
 }
 
+/**
+ * @param {string} move
+ * @param {Number} halfmove_num
+ */
+var format_halfmove_with_number = function(move, halfmove_num) {
+       return format_move_with_number(
+               move,
+               Math.floor(halfmove_num / 2) + 1,
+               halfmove_num % 2 == 0);
+}
+
+/**
+ * @param {Object} data
+ * @param {Number} halfmove_num
+ */
+var format_tooltip = function(data, halfmove_num) {
+       if (data['score_history'][halfmove_num] ||
+           halfmove_num === data['position']['pretty_history'].length) {
+               var move;
+               var short_score;
+               if (halfmove_num === data['position']['pretty_history'].length) {
+                       move = data['position']['last_move'];
+                       short_score = data['short_score'];
+               } else {
+                       move = data['position']['pretty_history'][halfmove_num];
+                       short_score = data['score_history'][halfmove_num][1];
+               }
+               var move_with_number = format_halfmove_with_number(move, halfmove_num);
+
+               return "After " + move_with_number + ": " + short_score;
+       } else {
+               for (var i = halfmove_num; i --> 0; ) {
+                       if (data['score_history'][i]) {
+                               var move = data['position']['pretty_history'][i];
+                               return "[Analysis kept from " + format_halfmove_with_number(move, i) + "]";
+                       }
+               }
+       }
+}
+
 /**
  * @param {boolean} sort_by_score
  */
@@ -1218,6 +1320,7 @@ var init = function() {
        request_update();
        $(window).resize(function() {
                board.resize();
+               update_sparkline(displayed_analysis_data || current_analysis_data);
                update_highlight();
                redraw_arrows();
        });