word/memory: adjust grid count to fit size

[sheet.git] / word / memory.js

diff --git a/word/memory.js b/word/memory.js
index 89fd853c3cb89210c2a1d3e02e1b9fdaaaec2b55..ac1e829996258598c1b710bded8c182b99c8c84a 100644 (file)
--- a/word/memory.js
+++ b/word/memory.js
@@ -60,11 +60,13 @@ class WordMemory extends WordQuiz {
 
                let cards;
                if (this.words) {
-                       const formstyle = window.getComputedStyle(this.form)
-                       const gridsize = [
-                               formstyle['grid-template-rows'], formstyle['grid-template-columns']
-                       ].map(val => val.match(/ /g).length + 1).reduce((x, y) => x * y) / 2;
-                       cards = this.words.splice(0, gridsize || 6).map(row => row[2]);
+                       const aspect = this.form.clientWidth / window.innerHeight;
+                       //TODO image ratio
+                       let count = 35;
+                       let cols = Math.round(Math.sqrt(count) * aspect**.5);
+                       count = cols * Math.ceil(count / cols);
+                       this.form.style['grid-template-columns'] = `repeat(${cols}, 1fr)`;
+                       cards = this.words.splice(0, count>>1).map(row => row[2]);
                        cards.push(...cards.map(val => -val));
                }
                else {