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Remove mozCurrentTransform/mozCurrentTransformInverse usage

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These canvas-context properties are Mozilla-specific, and has obviously never been implemented anywhere else. Currently they are in the process of being removed, see [bug 1782651](https://bugzilla.mozilla.org/show_bug.cgi?id=1782651) and [bug 1294360](https://bugzilla.mozilla.org/show_bug.cgi?id=1294360), which in practice means that in e.g. Firefox Nightly the `addContextCurrentTransform`-function is now being used in the *built-in* PDF Viewer (which was obviously never intended).

We should thus be able to replace these Mozilla-specific properties with `CanvasRenderingContext2D.getTransform()`, which is available in all browsers that we currently support: https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/getTransform#browser_compatibility
This commit is contained in:
Jonas Jenwald 2022-08-05 14:46:44 +02:00
parent 0ebd1daf30
commit 358a0607fe
3 changed files with 69 additions and 235 deletions
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12
src/display/display_utils.js
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@ -641,6 +641,16 @@ function binarySearchFirstItem(items, condition, start = 0) {
return minIndex; /* === maxIndex */
}
function getCurrentTransform(ctx) {
const { a, b, c, d, e, f } = ctx.getTransform();
return [a, b, c, d, e, f];
}
function getCurrentTransformInverse(ctx) {
const { a, b, c, d, e, f } = ctx.getTransform().invertSelf();
return [a, b, c, d, e, f];
}
export {
binarySearchFirstItem,
deprecated,
@ -649,6 +659,8 @@ export {
DOMStandardFontDataFactory,
DOMSVGFactory,
getColorValues,
getCurrentTransform,
getCurrentTransformInverse,
getFilenameFromUrl,
getPdfFilenameFromUrl,
getRGB,