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Ensure that a document is loaded in PDFViewer.{increaseScale, decreaseScale} (PR 14053 follow-up)

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This was always "wrong", since these methods (just like all the zoom-related ones) don't make sense unless there's an active document.
This commit is contained in:
Jonas Jenwald 2023-01-02 14:05:33 +01:00
parent 9f50b0af37
commit 0860a5b168
1 changed files with 6 additions and 0 deletions
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6
web/pdf_viewer.js
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@ -2001,6 +2001,9 @@ class PDFViewer {
* @param {Object|null} [options] * @param {Object|null} [options]
*/ */
increaseScale(steps = 1, options = null) { increaseScale(steps = 1, options = null) {
if (!this.pdfDocument) {
return;
}
let newScale = this._currentScale; let newScale = this._currentScale;
do { do {
newScale = (newScale * DEFAULT_SCALE_DELTA).toFixed(2); newScale = (newScale * DEFAULT_SCALE_DELTA).toFixed(2);
@ -2019,6 +2022,9 @@ class PDFViewer {
* @param {Object|null} [options] * @param {Object|null} [options]
*/ */
decreaseScale(steps = 1, options = null) { decreaseScale(steps = 1, options = null) {
if (!this.pdfDocument) {
return;
}
let newScale = this._currentScale; let newScale = this._currentScale;
do { do {
newScale = (newScale / DEFAULT_SCALE_DELTA).toFixed(2); newScale = (newScale / DEFAULT_SCALE_DELTA).toFixed(2);