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Comment fixes and instantiate textImageElement only as necessary

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This commit is contained in:
DD 2018-11-13 15:31:00 -05:00
parent 0b72608624
commit 679ddf9fb7
2 changed files with 15 additions and 13 deletions
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26
src/import/load-costume.js
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@ -50,7 +50,7 @@ const fetchBitmapCanvas_ = function (costume, runtime, rotationCenter) {
}
return new Promise((resolve, reject) => {
const baseImageElement = new Image();
const textImageElement = new Image();
let textImageElement;
let loadedOne = false;
@ -71,17 +71,19 @@ const fetchBitmapCanvas_ = function (costume, runtime, rotationCenter) {
const removeEventListeners = function () {
baseImageElement.removeEventListener('error', onError);
textImageElement.removeEventListener('error', onError);
baseImageElement.removeEventListener('load', onLoad);
textImageElement.removeEventListener('load', onLoad);
if (textImageElement) {
textImageElement.removeEventListener('error', onError);
textImageElement.removeEventListener('load', onLoad);
}
};
baseImageElement.addEventListener('error', onError);
textImageElement.addEventListener('error', onError);
baseImageElement.addEventListener('load', onLoad);
textImageElement.addEventListener('load', onLoad);
baseImageElement.addEventListener('error', onError);
if (costume.textLayerAsset) {
textImageElement = new Image();
textImageElement.addEventListener('load', onLoad);
textImageElement.addEventListener('error', onError);
textImageElement.src = costume.textLayerAsset.encodeDataURI();
} else {
loadedOne = true;
@ -97,7 +99,7 @@ const fetchBitmapCanvas_ = function (costume, runtime, rotationCenter) {
const ctx = canvas.getContext('2d');
ctx.drawImage(baseImageElement, 0, 0);
if (textImageElement.src) {
if (textImageElement) {
ctx.drawImage(textImageElement, 0, 0);
}
if (scale !== 1) {
@ -120,7 +122,7 @@ const fetchBitmapCanvas_ = function (costume, runtime, rotationCenter) {
canvas: canvas,
rotationCenter: rotationCenter,
// True if the asset matches the base layer; false if it required adjustment
assetMatchesBase: scale === 1 && !textImageElement.src
assetMatchesBase: scale === 1 && !textImageElement
};
})
.catch(e => Promise.reject(e))
@ -135,7 +137,7 @@ const loadBitmap_ = function (costume, runtime, rotationCenter) {
return fetchBitmapCanvas_(costume, runtime, rotationCenter).then(fetched => new Promise(resolve => {
rotationCenter = fetched.rotationCenter;
const saveAssetToStorage = function (dataURI) {
const updateCostumeAsset = function (dataURI) {
if (!runtime.v2BitmapAdapter) {
return Promise.reject('No V2 Bitmap adapter present.');
}
@ -153,7 +155,7 @@ const loadBitmap_ = function (costume, runtime, rotationCenter) {
};
if (!fetched.assetMatchesBase) {
saveAssetToStorage(fetched.canvas.toDataURL());
updateCostumeAsset(fetched.canvas.toDataURL());
}
resolve(fetched.canvas);
}))
@ -183,7 +185,7 @@ const loadBitmap_ = function (costume, runtime, rotationCenter) {
* @property {number} rotationCenterX - the X component of the costume's origin.
* @property {number} rotationCenterY - the Y component of the costume's origin.
* @property {number} [bitmapResolution] - the resolution scale for a bitmap costume.
* @param {!Asset} costume.asset - the asset of the costume loaded from storage.
* @property {!Asset} costume.asset - the asset of the costume loaded from storage.
* @param {!Runtime} runtime - Scratch runtime, used to access the storage module.
* @param {?int} optVersion - Version of Scratch that the costume comes from. If this is set
* to 2, scratch 3 will perform an upgrade step to handle quirks in SVGs from Scratch 2.0.

2
src/serialization/deserialize-assets.js
View file

@ -111,7 +111,7 @@ const deserializeCostume = function (costume, runtime, zip, assetFileName, textL
}
// textLayerMD5 exists if there is a text layer, which is a png of text from Scratch 1.4
// that was opened in Scratch 2.0. In this case, set costume,textLayerAsset.
// that was opened in Scratch 2.0. In this case, set costume.textLayerAsset.
let textLayerFilePromise;
if (costume.textLayerMD5) {
textLayerFileName = textLayerFileName ? textLayerFileName :