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workspace: Allow allocating smaller sizes for window clones

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Change the preferred size functions of the layout manager of window
clones to allow allocating smaller sizes, too. Also scale down the
allocation sizes of the ClutterClones our allocate implementation so
the ClutterClones will scale their texture accordingly.

This will enable us to position the window clones using their allocation
size instead of their scale, which is necessary when introducing a new
ClutterLayoutManager that positions the window clones.

https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1294
This commit is contained in:
Jonas Dreßler 2020-06-01 14:36:08 +02:00 committed by Georges Basile Stavracas Neto
parent 25985868e8
commit 85d2837466
1 changed files with 24 additions and 24 deletions
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48
js/ui/workspace.js
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@ -51,35 +51,22 @@ class WindowCloneLayout extends Clutter.LayoutManager {
this.layout_changed();
}
_makeBoxForWindow(window) {
// We need to adjust the position of the actor because of the
// consequences of invisible borders -- in reality, the texture
// has an extra set of "padding" around it that we need to trim
// down.
// The bounding box is based on the (visible) frame rect, while
// the buffer rect contains everything, including the invisible
// border padding.
let bufferRect = window.get_buffer_rect();
let box = new Clutter.ActorBox();
box.set_origin(bufferRect.x - this._boundingBox.x,
bufferRect.y - this._boundingBox.y);
box.set_size(bufferRect.width, bufferRect.height);
return box;
}
vfunc_get_preferred_height(_container, _forWidth) {
return [this._boundingBox.height, this._boundingBox.height];
return [0, this._boundingBox.height];
}
vfunc_get_preferred_width(_container, _forHeight) {
return [this._boundingBox.width, this._boundingBox.width];
return [0, this._boundingBox.width];
}
vfunc_allocate(container, _box) {
vfunc_allocate(container, box) {
// If the scale isn't 1, we weren't allocated our preferred size
// and have to scale the children allocations accordingly.
const scaleX = box.get_width() / this._boundingBox.width;
const scaleY = box.get_height() / this._boundingBox.height;
const childBox = new Clutter.ActorBox();
container.get_children().forEach(child => {
let realWindow;
if (child == container._windowClone)
@ -87,7 +74,20 @@ class WindowCloneLayout extends Clutter.LayoutManager {
else
realWindow = child.source;
child.allocate(this._makeBoxForWindow(realWindow.meta_window));
const bufferRect = realWindow.meta_window.get_buffer_rect();
childBox.set_origin(
bufferRect.x - this._boundingBox.x,
bufferRect.y - this._boundingBox.y);
const [, , natWidth, natHeight] = child.get_preferred_size();
childBox.set_size(natWidth, natHeight);
childBox.x1 *= scaleX;
childBox.x2 *= scaleX;
childBox.y1 *= scaleY;
childBox.y2 *= scaleY;
child.allocate(childBox);
});
}
});