Sakurai/pdf.js
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Remove the closure used with the InternalRenderTask class

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This patch utilizes the same approach as used in lots of other parts of the code-base, which thus *slightly* reduces the size of this code.
This commit is contained in:
Jonas Jenwald 2021-07-28 11:58:08 +02:00
parent b18620ac0f
commit 4c679d80ac
1 changed files with 159 additions and 161 deletions
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20
src/display/api.js
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@ -3063,11 +3063,11 @@ class RenderTask {
* For internal use only.
* @ignore
*/
const InternalRenderTask = (function InternalRenderTaskClosure() {
const canvasInRendering = new WeakSet();
class InternalRenderTask {
static get canvasInUse() {
return shadow(this, "canvasInUse", new WeakSet());
}
// eslint-disable-next-line no-shadow
class InternalRenderTask {
constructor({
callback,
params,
@ -3117,14 +3117,14 @@ const InternalRenderTask = (function InternalRenderTaskClosure() {
return;
}
if (this._canvas) {
if (canvasInRendering.has(this._canvas)) {
if (InternalRenderTask.canvasInUse.has(this._canvas)) {
throw new Error(
"Cannot use the same canvas during multiple render() operations. " +
"Use different canvas or ensure previous operations were " +
"cancelled or completed."
);
}
canvasInRendering.add(this._canvas);
InternalRenderTask.canvasInUse.add(this._canvas);
}
if (this._pdfBug && globalThis.StepperManager?.enabled) {
@ -3163,7 +3163,7 @@ const InternalRenderTask = (function InternalRenderTaskClosure() {
this.gfx.endDrawing();
}
if (this._canvas) {
canvasInRendering.delete(this._canvas);
InternalRenderTask.canvasInUse.delete(this._canvas);
}
this.callback(
error ||
@ -3229,15 +3229,13 @@ const InternalRenderTask = (function InternalRenderTaskClosure() {
if (this.operatorList.lastChunk) {
this.gfx.endDrawing();
if (this._canvas) {
canvasInRendering.delete(this._canvas);
InternalRenderTask.canvasInUse.delete(this._canvas);
}
this.callback();
}
}
}
}
return InternalRenderTask;
})();
}
/** @type {string} */
const version =