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Let the Dock choose an edge, choose its screens, and be dragged into order

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Three things that were parked, and the reasons they were parked turned out to be
the useful part of doing them.

The Dock can sit on the left or the right as well as the bottom. Everything that
assumed the bottom edge is now asked which edge it is on: the anchors, the axis
that gets an implicit size, the sliver of input region that survives hiding, the
direction the body slides away in, and which side a tooltip opens towards. The
body was a Row and is a Grid, because one declaration then serves both
orientations -- Row and Column would each need their own children, and the
cross-axis anchors that centre items in a Row are the wrong axis in a Column.

Bottom is unchanged in every particular, and the settings default to it, so a
hot reload in the middle of this work left the running dock exactly where it
was.

One bug worth recording because static review would never have found it: a dock
spans the edge it lives on, which means anchoring BOTH ends of that edge. The
first side dock anchored top and left only, was free to collapse to its implicit
height, and came out one pixel tall. It parsed, it loaded, and it rendered
nothing. The contract measures the geometry rather than reading the source for
that reason, and was verified by putting the single-ended anchor back.

Per-screen is a list of names where empty means every screen, because a list is
what goes stale when a display is unplugged and "all" should not be spelled as
one. Turning off the last screen collapses to "all" rather than leaving no dock
anywhere and no obvious way back.

Pins can be dragged by a grip. The objection this file recorded for a long time
was real -- dragging inside a Flickable inside a scrolling page fails in a way
that reads as breakage -- and the answer is preventStealing on the grip, so the
page cannot claim a gesture that started there. The arrow buttons stay: they are
the keyboard-reachable path and a grip is not. The order is held locally during
the drag and written once on release, rather than rewriting settings.json for
every slot crossed.

Claude-Session: https://claude.ai/code/session_01BRvzt4H8XXLPVH5MyYdk9L
This commit is contained in:
Gabriel Brown
2026-08-20 14:10:22 -04:00
parent 23141673a2
commit 3b01f1e020
9 changed files with 487 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files
config/dot/quickshell/modules/settings/DockPinsEditor.qml
+94 -1
View File
@@ -45,6 +45,50 @@ Column {
DesktopPreferences.set("dockPinned", next);
}
// ── Dragging ────────────────────────────────────────────────────────────
//
// By a grip rather than the whole row. The objection this file used to
// record -- that dragging inside a Flickable inside a scrolling page is
// hard to get right and fails in a way that reads as breakage -- is real,
// and the answer is preventStealing on the grip: the Flickable cannot take
// a gesture that started there, so a vertical drag reorders instead of
// scrolling the page out from under it. The arrow buttons stay, because
// they are the keyboard-reachable path and a grip is not.
//
// The order is held here while the drag runs and written once on release.
// Committing on every slot crossed would rewrite settings.json a dozen
// times for one gesture.
property int draggingIndex: -1
property var workingOrder: []
readonly property var displayed: root.draggingIndex >= 0 ? root.workingOrder : root.pinned
function beginDrag(index: int): void {
root.workingOrder = root.pinned.slice();
root.draggingIndex = index;
}
function dragTo(target: int): void {
if (root.draggingIndex < 0 || target === root.draggingIndex)
return;
if (target < 0 || target >= root.workingOrder.length)
return;
const next = root.workingOrder.slice();
const moved = next.splice(root.draggingIndex, 1)[0];
next.splice(target, 0, moved);
root.workingOrder = next;
root.draggingIndex = target;
}
function endDrag(): void {
if (root.draggingIndex < 0)
return;
const next = root.workingOrder.slice();
root.draggingIndex = -1;
root.workingOrder = [];
root.commit(next);
}
function move(from: int, to: int): void {
if (to < 0 || to >= root.pinned.length)
return;
@@ -67,7 +111,7 @@ Column {
}
Repeater {
model: root.pinned
model: root.displayed
SettingRow {
id: pin
@@ -87,11 +131,60 @@ Column {
divider: pin.index < root.pinned.length - 1
controlWidth: 132
// Lifted while dragging so the row being moved is the one that
// looks moved.
z: root.draggingIndex === pin.index ? 2 : 0
opacity: root.draggingIndex === pin.index ? 0.85 : 1
Row {
anchors.right: parent.right
anchors.verticalCenter: parent.verticalCenter
spacing: 4
// The grip. preventStealing is the whole reason this works
// inside a scrolling page: without it the Flickable claims the
// vertical gesture and the row never moves.
Item {
width: 26
height: 26
anchors.verticalCenter: parent.verticalCenter
Text {
anchors.centerIn: parent
text: "\u2261"
color: root.draggingIndex === pin.index ? Theme.accent : Theme.fgMuted
font.family: Theme.fontFamily
font.pixelSize: 15
}
MouseArea {
id: grip
anchors.fill: parent
preventStealing: true
cursorShape: Qt.SizeVerCursor
property real pressY: 0
onPressed: mouse => {
grip.pressY = mouse.y;
root.beginDrag(pin.index);
}
onPositionChanged: mouse => {
if (root.draggingIndex < 0 || pin.height <= 0)
return;
// How many whole rows the pointer has travelled from
// where it started. Rounded, so the swap happens as
// the grip passes the midpoint of the next row.
const travelled = (mouse.y - grip.pressY);
const slots = Math.round(travelled / pin.height);
if (slots !== 0)
root.dragTo(root.draggingIndex + slots);
}
onReleased: root.endDrag()
onCanceled: root.endDrag()
}
}
SettingsButton {
text: "↑"
enabled: pin.index > 0