overviewControls: Subclass layout manager directly
All the ControlsManagerLayout uses from BoxLayout is the spacing property, both size requests and allocation are completely custom. That makes subclassing really questionable, so stop doing that and just hook up to the `spacing` style property manually. Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/3104>
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@ -34,10 +34,10 @@ export const ControlsState = {
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};
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const ControlsManagerLayout = GObject.registerClass(
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class ControlsManagerLayout extends Clutter.BoxLayout {
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class ControlsManagerLayout extends Clutter.LayoutManager {
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_init(searchEntry, appDisplay, workspacesDisplay, workspacesThumbnails,
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searchController, dash, stateAdjustment) {
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super._init({orientation: Clutter.Orientation.VERTICAL});
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super._init();
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this._appDisplay = appDisplay;
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this._workspacesDisplay = workspacesDisplay;
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@ -47,6 +47,8 @@ class ControlsManagerLayout extends Clutter.BoxLayout {
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this._searchController = searchController;
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this._dash = dash;
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this._spacing = 0;
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this._cachedWorkspaceBoxes = new Map();
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this._postAllocationCallbacks = [];
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@ -78,7 +80,6 @@ class ControlsManagerLayout extends Clutter.BoxLayout {
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const workspaceBox = box.copy();
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const [width, height] = workspaceBox.get_size();
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const {y1: startY} = this._workAreaBox;
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const {spacing} = this;
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const {expandFraction} = this._workspacesThumbnails;
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switch (state) {
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@ -88,16 +89,16 @@ class ControlsManagerLayout extends Clutter.BoxLayout {
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break;
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case ControlsState.WINDOW_PICKER:
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workspaceBox.set_origin(0,
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startY + searchHeight + spacing +
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thumbnailsHeight + spacing * expandFraction);
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startY + searchHeight + this._spacing +
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thumbnailsHeight + this._spacing * expandFraction);
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workspaceBox.set_size(width,
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height -
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dashHeight - spacing -
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searchHeight - spacing -
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thumbnailsHeight - spacing * expandFraction);
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dashHeight - this._spacing -
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searchHeight - this._spacing -
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thumbnailsHeight - this._spacing * expandFraction);
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break;
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case ControlsState.APP_GRID:
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workspaceBox.set_origin(0, startY + searchHeight + spacing);
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workspaceBox.set_origin(0, startY + searchHeight + this._spacing);
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workspaceBox.set_size(
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width,
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Math.round(height * SMALL_WORKSPACE_RATIO));
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@ -111,7 +112,6 @@ class ControlsManagerLayout extends Clutter.BoxLayout {
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const [width, height] = box.get_size();
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const {y1: startY} = this._workAreaBox;
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const appDisplayBox = new Clutter.ActorBox();
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const {spacing} = this;
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switch (state) {
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case ControlsState.HIDDEN:
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@ -120,14 +120,14 @@ class ControlsManagerLayout extends Clutter.BoxLayout {
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break;
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case ControlsState.APP_GRID:
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appDisplayBox.set_origin(0,
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startY + searchHeight + spacing + appGridBox.get_height());
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startY + searchHeight + this._spacing + appGridBox.get_height());
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break;
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}
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appDisplayBox.set_size(width,
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height -
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searchHeight - spacing -
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appGridBox.get_height() - spacing -
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searchHeight - this._spacing -
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appGridBox.get_height() - this._spacing -
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dashHeight);
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return appDisplayBox;
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@ -142,9 +142,17 @@ class ControlsManagerLayout extends Clutter.BoxLayout {
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}
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vfunc_set_container(container) {
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this._container?.disconnectObject(this);
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this._container = container;
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if (container)
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this.hookup_style(container);
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this._container?.connectObject('style-changed',
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() => {
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const node = this._container.get_theme_node();
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const spacing = node.get_length('spacing');
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if (this._spacing !== spacing) {
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this._spacing = spacing;
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this.layout_changed();
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}
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}, this);
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}
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vfunc_get_preferred_width(_container, _forHeight) {
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@ -160,8 +168,6 @@ class ControlsManagerLayout extends Clutter.BoxLayout {
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vfunc_allocate(container, box) {
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const childBox = new Clutter.ActorBox();
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const {spacing} = this;
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const startY = this._workAreaBox.y1;
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box.y1 += startY;
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const [width, height] = box.get_size();
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@ -173,7 +179,7 @@ class ControlsManagerLayout extends Clutter.BoxLayout {
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childBox.set_size(width, searchHeight);
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this._searchEntry.allocate(childBox);
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availableHeight -= searchHeight + spacing;
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availableHeight -= searchHeight + this._spacing;
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// Dash
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const maxDashHeight = Math.round(box.get_height() * DASH_MAX_HEIGHT_RATIO);
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@ -185,7 +191,7 @@ class ControlsManagerLayout extends Clutter.BoxLayout {
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childBox.set_size(width, dashHeight);
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this._dash.allocate(childBox);
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availableHeight -= dashHeight + spacing;
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availableHeight -= dashHeight + this._spacing;
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// Workspace Thumbnails
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let thumbnailsHeight = 0;
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@ -196,7 +202,7 @@ class ControlsManagerLayout extends Clutter.BoxLayout {
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thumbnailsHeight = Math.min(
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thumbnailsHeight * expandFraction,
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height * this._workspacesThumbnails.maxThumbnailScale);
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childBox.set_origin(0, startY + searchHeight + spacing);
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childBox.set_origin(0, startY + searchHeight + this._spacing);
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childBox.set_size(width, thumbnailsHeight);
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this._workspacesThumbnails.allocate(childBox);
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}
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@ -245,7 +251,7 @@ class ControlsManagerLayout extends Clutter.BoxLayout {
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}
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// Search
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childBox.set_origin(0, startY + searchHeight + spacing);
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childBox.set_origin(0, startY + searchHeight + this._spacing);
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childBox.set_size(width, availableHeight);
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this._searchController.allocate(childBox);
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