diff --git a/src/controllers/AbstractAppController.js b/src/controllers/AbstractAppController.js index 9f5f85584050..9903099e29c9 100644 --- a/src/controllers/AbstractAppController.js +++ b/src/controllers/AbstractAppController.js @@ -61,6 +61,7 @@ import gmfAuthenticationService from 'ngeo/auth/service'; import ngeoMapFeatureOverlayMgr from 'ngeo/map/FeatureOverlayMgr'; import storeMap from 'gmfapi/store/map'; import user, {UserState, loginMessageRequired} from 'gmfapi/store/user'; +import {debounce} from 'gmf/misc/debounce2'; AbstractAppController.$inject = ['$scope', '$injector', 'mobile']; /** @@ -127,14 +128,15 @@ export function AbstractAppController($scope, $injector, mobile) { return newCenter; }; - // Fix the center on the WMTS grid on animation end - const originalViewSetHint = view.setHint; - view.setHint = (hint, value) => { - originalViewSetHint.call(view, hint, value); - if (hint === ViewHint.ANIMATING && value === -1) { - view.setCenter(view.getCenter()); - } - }; + /** + * Base OL view.setHint function. + * Keep it to be able to reset its normal behavior if wanted. + * @private + */ + this.originalViewSetHint = view.setHint; + // Be sure the center is aligned with the grid (anti-blur effect). + this.fixCenterOnGrid(view); + const map = new olMap( Object.assign( { @@ -700,6 +702,25 @@ function getLayerByLabels(layers, labels) { return null; } +/** + * Fix the center on the WMTS grid on animation end. + * This could help to have a not blurred map, but without + * timeout (and with map.view.constrainResolution to true), the map + * could "jump around" slightly on zooming in/out quickly. + * @param {import ('ol/View').View} view an ol view. + */ +AbstractAppController.prototype.fixCenterOnGrid = function (view) { + const debounceSetCenter = debounce((view, hint, value) => { + if (hint === ViewHint.ANIMATING && value === -1) { + view.setCenter(view.getCenter()); + } + }, 50); + view.setHint = (hint, value) => { + this.originalViewSetHint.call(view, hint, value); + debounceSetCenter(view, hint, value); + }; +}; + /** * @param {string} lang Language code. */