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temporary fix for layerlist scroll

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This commit is contained in:
juliandescottes 2017-02-04 14:09:27 +01:00
parent 47b09b10c5
commit b6fa769ba1
3 changed files with 35 additions and 1 deletions
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8
src/js/controller/LayersListController.js
View File

@ -27,15 +27,21 @@
};
ns.LayersListController.prototype.renderLayerList_ = function () {
// Backup scroll before refresh.
var scrollTop = this.layersListEl.scrollTop;
this.layersListEl.innerHTML = '';
var layers = this.piskelController.getLayers();
layers.forEach(this.addLayerItem.bind(this));
this.updateButtonStatus_();
// Restore scroll
this.layersListEl.scrollTop = scrollTop;
// Ensure the currently the selected layer is visible.
var currentLayerEl = this.layersListEl.querySelector('.current-layer-item');
if (currentLayerEl) {
currentLayerEl.scrollIntoView();
currentLayerEl.scrollIntoViewIfNeeded(false);
}
};

27
src/js/lib/scrollifneeded/scrollifneeded.js Normal file
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@ -0,0 +1,27 @@
if (!Element.prototype.scrollIntoViewIfNeeded) {
Element.prototype.scrollIntoViewIfNeeded = function (centerIfNeeded) {
centerIfNeeded = arguments.length === 0 ? true : !!centerIfNeeded;
var parent = this.parentNode,
parentComputedStyle = window.getComputedStyle(parent, null),
parentBorderTopWidth = parseInt(parentComputedStyle.getPropertyValue('border-top-width')),
parentBorderLeftWidth = parseInt(parentComputedStyle.getPropertyValue('border-left-width')),
overTop = this.offsetTop - parent.offsetTop < parent.scrollTop,
overBottom = (this.offsetTop - parent.offsetTop + this.clientHeight - parentBorderTopWidth) > (parent.scrollTop + parent.clientHeight),
overLeft = this.offsetLeft - parent.offsetLeft < parent.scrollLeft,
overRight = (this.offsetLeft - parent.offsetLeft + this.clientWidth - parentBorderLeftWidth) > (parent.scrollLeft + parent.clientWidth),
alignWithTop = overTop && !overBottom;
if ((overTop || overBottom) && centerIfNeeded) {
parent.scrollTop = this.offsetTop - parent.offsetTop - parent.clientHeight / 2 - parentBorderTopWidth + this.clientHeight / 2;
}
if ((overLeft || overRight) && centerIfNeeded) {
parent.scrollLeft = this.offsetLeft - parent.offsetLeft - parent.clientWidth / 2 - parentBorderLeftWidth + this.clientWidth / 2;
}
if ((overTop || overBottom || overLeft || overRight) && !centerIfNeeded) {
this.scrollIntoView(alignWithTop);
}
};
}

1
src/piskel-script-list.js
View File

@ -54,6 +54,7 @@
// JSZip https://github.com/Stuk/jszip
"js/lib/jszip/jszip.min.js",
"js/lib/scrollifneeded/scrollifneeded.js",
// Smoothscroll: https://github.com/iamdustan/smoothscroll
"js/lib/smoothscroll/smoothscroll.js",