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Don't shadow the TouchManager.prototype.MIN_TOUCH_DISTANCE_TO_PINCH value

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The `devicePixelRatio` may change if the window resolution changes, which can happen e.g. if the viewer is moved to another monitor.
This commit is contained in:
Jonas Jenwald 2025-03-12 14:50:27 +01:00
parent d74619847d
commit 92adc7ea1b
1 changed files with 5 additions and 6 deletions
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11
src/display/touch_manager.js
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@ -13,7 +13,6 @@
* limitations under the License.
*/
import { shadow } from "../shared/util.js";
import { stopEvent } from "./display_utils.js";
class TouchManager {
@ -65,6 +64,10 @@ class TouchManager {
});
}
/**
* NOTE: Don't shadow this value since `devicePixelRatio` may change if the
* window resolution changes, e.g. if the viewer is moved to another monitor.
*/
get MIN_TOUCH_DISTANCE_TO_PINCH() {
// The 35 is coming from:
// https://searchfox.org/mozilla-central/source/gfx/layers/apz/src/GestureEventListener.cpp#36
@ -72,11 +75,7 @@ class TouchManager {
// The properties TouchEvent::screenX/Y are in screen CSS pixels:
// https://developer.mozilla.org/en-US/docs/Web/API/Touch/screenX#examples
// MIN_TOUCH_DISTANCE_TO_PINCH is in CSS pixels.
return shadow(
this,
"MIN_TOUCH_DISTANCE_TO_PINCH",
35 / (window.devicePixelRatio || 1)
);
return 35 / (window.devicePixelRatio || 1);
}
#onTouchStart(evt) {