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dnd: Set dnd actor size instead of scaling it when reparenting

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Previously the actor could end up using its natural size and then get
scaled down to its allocation before reparenting. This however could
affect the layout of the widget due to the larger size. To ensure the
widget looks the same after reparenting set the size to its original
size.

Fixes https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3717

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1680>
This commit is contained in:
Sebastian Keller 2021-02-16 00:54:37 +01:00
parent 87558efbf1
commit 629b7394f7
1 changed files with 9 additions and 11 deletions
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20
js/ui/dnd.js
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@ -382,24 +382,18 @@ var _Draggable = class _Draggable {
this._dragActorHadFixedPos = this._dragActor.fixed_position_set;
this._dragOrigX = this._dragActor.allocation.x1;
this._dragOrigY = this._dragActor.allocation.y1;
this._dragActorHadNatWidth = this._dragActor.natural_width_set;
this._dragActorHadNatHeight = this._dragActor.natural_height_set;
this._dragOrigWidth = this._dragActor.allocation.get_width();
this._dragOrigHeight = this._dragActor.allocation.get_height();
this._dragOrigScale = this._dragActor.scale_x;
// When the actor gets reparented to the uiGroup, it will be
// allocated its preferred size, so use that size instead of the
// current allocation size.
const [, newAllocatedWidth] = this._dragActor.get_preferred_width(-1);
const [, newAllocatedHeight] = this._dragActor.get_preferred_height(-1);
// Ensure actors with an allocation smaller than their natural size
// retain their size
this._dragActor.set_size(...this._dragActor.allocation.get_size());
const transformedExtents = this._dragActor.get_transformed_extents();
// Set the actor's scale such that it will keep the same
// transformed size when it's reparented to the uiGroup
this._dragActor.set_scale(
transformedExtents.get_width() / newAllocatedWidth,
transformedExtents.get_height() / newAllocatedHeight);
this._dragOffsetX = transformedExtents.origin.x - this._dragStartX;
this._dragOffsetY = transformedExtents.origin.y - this._dragStartY;
@ -757,6 +751,10 @@ var _Draggable = class _Draggable {
dragActor.set_position(this._dragOrigX, this._dragOrigY);
else
dragActor.fixed_position_set = false;
if (this._dragActorHadNatWidth)
this._dragActor.set_width(-1);
if (this._dragActorHadNatHeight)
this._dragActor.set_height(-1);
} else {
dragActor.destroy();
}