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Remove the remaining closure in the src/display/canvas.js file

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For e.g. the `gulp mozcentral` command, the *built* `pdf.js` file decreases from `304 607` to `301 295` bytes with this patch. The improvement comes mostly from having less overall indentation in the code.
This commit is contained in:
Jonas Jenwald 2021-07-25 12:55:51 +02:00
parent 156762c482
commit fbaafdc4e8
1 changed files with 2252 additions and 2270 deletions
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38
src/display/canvas.js
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@ -37,6 +37,12 @@ const MIN_FONT_SIZE = 16;
const MAX_FONT_SIZE = 100; const MAX_FONT_SIZE = 100;
const MAX_GROUP_SIZE = 4096; const MAX_GROUP_SIZE = 4096;
// Defines the time the `executeOperatorList`-method is going to be executing
// before it stops and shedules a continue of execution.
const EXECUTION_TIME = 15; // ms
// Defines the number of steps before checking the execution time.
const EXECUTION_STEPS = 10;
const COMPILE_TYPE3_GLYPHS = true; const COMPILE_TYPE3_GLYPHS = true;
const MAX_SIZE_TO_COMPILE = 1000; const MAX_SIZE_TO_COMPILE = 1000;
@ -442,16 +448,6 @@ class CanvasExtraState {
} }
} }
/**
* @type {any}
*/
const CanvasGraphics = (function CanvasGraphicsClosure() {
// Defines the time the executeOperatorList is going to be executing
// before it stops and shedules a continue of execution.
const EXECUTION_TIME = 15;
// Defines the number of steps before checking the execution time
const EXECUTION_STEPS = 10;
function putBinaryImageData(ctx, imgData, transferMaps = null) { function putBinaryImageData(ctx, imgData, transferMaps = null) {
if (typeof ImageData !== "undefined" && imgData instanceof ImageData) { if (typeof ImageData !== "undefined" && imgData instanceof ImageData) {
ctx.putImageData(imgData, 0, 0); ctx.putImageData(imgData, 0, 0);
@ -518,8 +514,7 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
} }
for (i = 0; i < totalChunks; i++) { for (i = 0; i < totalChunks; i++) {
thisChunkHeight = thisChunkHeight = i < fullChunks ? FULL_CHUNK_HEIGHT : partialChunkHeight;
i < fullChunks ? FULL_CHUNK_HEIGHT : partialChunkHeight;
destPos = 0; destPos = 0;
for (j = 0; j < thisChunkHeight; j++) { for (j = 0; j < thisChunkHeight; j++) {
const srcDiff = srcLength - srcPos; const srcDiff = srcLength - srcPos;
@ -837,7 +832,6 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
const NORMAL_CLIP = {}; const NORMAL_CLIP = {};
const EO_CLIP = {}; const EO_CLIP = {};
// eslint-disable-next-line no-shadow
class CanvasGraphics { class CanvasGraphics {
constructor( constructor(
canvasCtx, canvasCtx,
@ -913,10 +907,7 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
this.ctx.save(); this.ctx.save();
// The transform can be applied before rendering, transferring it to // The transform can be applied before rendering, transferring it to
// the new canvas. // the new canvas.
this.ctx.transform.apply( this.ctx.transform.apply(this.ctx, this.compositeCtx.mozCurrentTransform);
this.ctx,
this.compositeCtx.mozCurrentTransform
);
} }
this.ctx.save(); this.ctx.save();
@ -2617,10 +2608,7 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
imgToPaint = tmpCanvas.canvas; imgToPaint = tmpCanvas.canvas;
} }
const scaled = this._scaleImage( const scaled = this._scaleImage(imgToPaint, ctx.mozCurrentTransformInverse);
imgToPaint,
ctx.mozCurrentTransformInverse
);
ctx.drawImage( ctx.drawImage(
scaled.img, scaled.img,
0, 0,
@ -2773,10 +2761,7 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
const sqNorm1 = m[0] ** 2 + m[2] ** 2; const sqNorm1 = m[0] ** 2 + m[2] ** 2;
const sqNorm2 = m[1] ** 2 + m[3] ** 2; const sqNorm2 = m[1] ** 2 + m[3] ** 2;
const pixelHeight = Math.sqrt(Math.max(sqNorm1, sqNorm2)) / absDet; const pixelHeight = Math.sqrt(Math.max(sqNorm1, sqNorm2)) / absDet;
if ( if (sqNorm1 !== sqNorm2 && this._combinedScaleFactor * pixelHeight > 1) {
sqNorm1 !== sqNorm2 &&
this._combinedScaleFactor * pixelHeight > 1
) {
// The parallelogram isn't a square and at least one height // The parallelogram isn't a square and at least one height
// is lower than 1 so the resulting line width must be 1 // is lower than 1 so the resulting line width must be 1
// but it cannot be achieved with one scale: when scaling a pixel // but it cannot be achieved with one scale: when scaling a pixel
@ -2822,7 +2807,4 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
CanvasGraphics.prototype[OPS[op]] = CanvasGraphics.prototype[op]; CanvasGraphics.prototype[OPS[op]] = CanvasGraphics.prototype[op];
} }
return CanvasGraphics;
})();
export { CanvasGraphics }; export { CanvasGraphics };