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Fix #12: only set canvas context font t once

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This commit is contained in:
Riley Shaw 2014-08-25 10:49:50 -07:00
parent e6c6ce3a33
commit 3482efc8af
4 changed files with 21 additions and 17 deletions
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1
app/display.js
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@ -2,7 +2,6 @@ var _ = require('./util.js');
module.exports = function (canvas, grid, cellSize) {
var ctx = canvas.getContext('2d');
ctx.font = 'bold ' + cellSize + 'px Arial';
ctx.clearRect(0, 0, canvas.width, canvas.height);
_.each(grid, function (column, x) {

17
app/dom.js
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@ -5,16 +5,17 @@ var createCanvasElement = function (width, height, id, insertAfter) {
// resolution, then displays it properly using styles
function createHDCanvas (ratio) {
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
// Creates a dummy canvas to test device's pixel ratio
ratio = (function () {
var context = document.createElement('canvas').getContext('2d');
var ctx = document.createElement('canvas').getContext('2d');
var dpr = window.devicePixelRatio || 1;
var bsr = context.webkitBackingStorePixelRatio ||
context.mozBackingStorePixelRatio ||
context.msBackingStorePixelRatio ||
context.oBackingStorePixelRatio ||
context.backingStorePixelRatio || 1;
var bsr = ctx.webkitBackingStorePixelRatio ||
ctx.mozBackingStorePixelRatio ||
ctx.msBackingStorePixelRatio ||
ctx.oBackingStorePixelRatio ||
ctx.backingStorePixelRatio || 1;
return dpr / bsr;
})();
@ -22,7 +23,9 @@ var createCanvasElement = function (width, height, id, insertAfter) {
canvas.height = height * ratio;
canvas.style.width = width + 'px';
canvas.style.height = height + 'px';
canvas.getContext('2d').setTransform(ratio, 0, 0, ratio, 0, 0);
ctx.setTransform(ratio, 0, 0, ratio, 0, 0);
ctx.font = 'bold ' + cellSize + 'px Arial';
if (id) canvas.id = id;
return canvas;

18
dist/terra.js vendored
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@ -185,7 +185,6 @@ var _ = require('./util.js');
module.exports = function (canvas, grid, cellSize) {
var ctx = canvas.getContext('2d');
ctx.font = 'bold ' + cellSize + 'px Arial';
ctx.clearRect(0, 0, canvas.width, canvas.height);
_.each(grid, function (column, x) {
@ -215,16 +214,17 @@ var createCanvasElement = function (width, height, id, insertAfter) {
// resolution, then displays it properly using styles
function createHDCanvas (ratio) {
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
// Creates a dummy canvas to test device's pixel ratio
ratio = (function () {
var context = document.createElement('canvas').getContext('2d');
var ctx = document.createElement('canvas').getContext('2d');
var dpr = window.devicePixelRatio || 1;
var bsr = context.webkitBackingStorePixelRatio ||
context.mozBackingStorePixelRatio ||
context.msBackingStorePixelRatio ||
context.oBackingStorePixelRatio ||
context.backingStorePixelRatio || 1;
var bsr = ctx.webkitBackingStorePixelRatio ||
ctx.mozBackingStorePixelRatio ||
ctx.msBackingStorePixelRatio ||
ctx.oBackingStorePixelRatio ||
ctx.backingStorePixelRatio || 1;
return dpr / bsr;
})();
@ -232,7 +232,9 @@ var createCanvasElement = function (width, height, id, insertAfter) {
canvas.height = height * ratio;
canvas.style.width = width + 'px';
canvas.style.height = height + 'px';
canvas.getContext('2d').setTransform(ratio, 0, 0, ratio, 0, 0);
ctx.setTransform(ratio, 0, 0, ratio, 0, 0);
ctx.font = 'bold ' + cellSize + 'px Arial';
if (id) canvas.id = id;
return canvas;

2
dist/terra.min.js vendored
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