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Update: Scroll preferences window content on Drag-and-Drop

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Scroll the content of the preferences window on Drag-and-Drop, when the
mouse is in the upper or lower part of the content of the preferences
window.
This helps a user, who has e.g. a lot of items, but the preferences
window with a low height, to easily move any item to any position.
This commit is contained in:
June 2021-07-04 05:16:32 +02:00
commit edfa50f254
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GPG key ID: 094C2AC34192FA11
3 changed files with 127 additions and 2 deletions
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24
src/prefs.js
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@ -27,6 +27,7 @@ const Me = ExtensionUtils.getCurrentExtension();
const PrefsBoxOrderListEmptyPlaceholder = Me.imports.prefsModules.PrefsBoxOrderListEmptyPlaceholder;
const PrefsBoxOrderItemRow = Me.imports.prefsModules.PrefsBoxOrderItemRow;
const ScrollManager = Me.imports.prefsModules.ScrollManager;
var PrefsWidget = GObject.registerClass({
GTypeName: "PrefsWidget",
@ -63,12 +64,33 @@ var PrefsWidget = GObject.registerClass({
window.default_height = 750;
});
// Scroll up or down, when a Drag-and-Drop operation is in progress and
// the user has their cursor either in the upper or lower 10% of this
// widget respectively.
this._scrollManager = new ScrollManager.ScrollManager(this);
let controller = new Gtk.DropControllerMotion();
controller.connect("motion", (_, x, y) => {
// If the pointer is currently in the upper ten percent of this
// widget, then scroll up.
if (y <= this.get_allocated_height() * 0.1) this._scrollManager.startScrollUp();
// If the pointer is currently in the lower ten percent of this
// widget, then scroll down.
else if (y >= this.get_allocated_height() * 0.9) this._scrollManager.startScrollDown();
// Otherwise stop scrolling.
else this._scrollManager.stopScrollAll();
});
controller.connect("leave", () => {
// Stop scrolling on leave.
this._scrollManager.stopScrollAll();
});
this.add_controller(controller);
// Initialize the given `gtkListBox`.
const initializeGtkListBox = (boxOrder, gtkListBox) => {
// Add the items of the given configured box order as
// GtkListBoxRows.
for (const item of boxOrder) {
const listBoxRow = new PrefsBoxOrderItemRow.PrefsBoxOrderItemRow();
const listBoxRow = new PrefsBoxOrderItemRow.PrefsBoxOrderItemRow({}, this._scrollManager);
listBoxRow.item = item;
if (item.startsWith("appindicator-kstatusnotifieritem-")) {