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Diffstat (limited to '')
| -rw-r--r-- | js/ui/overviewControls.js | 519 |
1 files changed, 519 insertions, 0 deletions
diff --git a/js/ui/overviewControls.js b/js/ui/overviewControls.js new file mode 100644 index 0000000..b5e89bb --- /dev/null +++ b/js/ui/overviewControls.js @@ -0,0 +1,519 @@ +// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*- +/* exported ControlsManager */ + +const { Clutter, GObject, Meta, St } = imports.gi; + +const Dash = imports.ui.dash; +const Main = imports.ui.main; +const Params = imports.misc.params; +const ViewSelector = imports.ui.viewSelector; +const WorkspaceThumbnail = imports.ui.workspaceThumbnail; +const Overview = imports.ui.overview; + +var SIDE_CONTROLS_ANIMATION_TIME = Overview.ANIMATION_TIME; + +function getRtlSlideDirection(direction, actor) { + let rtl = actor.text_direction == Clutter.TextDirection.RTL; + if (rtl) { + direction = direction == SlideDirection.LEFT + ? SlideDirection.RIGHT : SlideDirection.LEFT; + } + return direction; +} + +var SlideDirection = { + LEFT: 0, + RIGHT: 1, +}; + +var SlideLayout = GObject.registerClass({ + Properties: { + 'slide-x': GObject.ParamSpec.double( + 'slide-x', 'slide-x', 'slide-x', + GObject.ParamFlags.READWRITE, + 0, 1, 1), + }, +}, class SlideLayout extends Clutter.FixedLayout { + _init(params) { + this._slideX = 1; + this._direction = SlideDirection.LEFT; + + super._init(params); + } + + vfunc_get_preferred_width(container, forHeight) { + let child = container.get_first_child(); + + let [minWidth, natWidth] = child.get_preferred_width(forHeight); + + minWidth *= this._slideX; + natWidth *= this._slideX; + + return [minWidth, natWidth]; + } + + vfunc_allocate(container, box) { + let child = container.get_first_child(); + + let availWidth = Math.round(box.x2 - box.x1); + let availHeight = Math.round(box.y2 - box.y1); + let [, natWidth] = child.get_preferred_width(availHeight); + + // Align the actor inside the clipped box, as the actor's alignment + // flags only determine what to do if the allocated box is bigger + // than the actor's box. + let realDirection = getRtlSlideDirection(this._direction, child); + let alignX = realDirection == SlideDirection.LEFT + ? availWidth - natWidth + : availWidth - natWidth * this._slideX; + + let actorBox = new Clutter.ActorBox(); + actorBox.x1 = box.x1 + alignX; + actorBox.x2 = actorBox.x1 + (child.x_expand ? availWidth : natWidth); + actorBox.y1 = box.y1; + actorBox.y2 = actorBox.y1 + availHeight; + + child.allocate(actorBox); + } + + // eslint-disable-next-line camelcase + set slide_x(value) { + if (this._slideX == value) + return; + this._slideX = value; + this.notify('slide-x'); + this.layout_changed(); + } + + // eslint-disable-next-line camelcase + get slide_x() { + return this._slideX; + } + + set slideDirection(direction) { + this._direction = direction; + this.layout_changed(); + } + + get slideDirection() { + return this._direction; + } +}); + +var SlidingControl = GObject.registerClass( +class SlidingControl extends St.Widget { + _init(params) { + params = Params.parse(params, { slideDirection: SlideDirection.LEFT }); + + this.layout = new SlideLayout(); + this.layout.slideDirection = params.slideDirection; + super._init({ + layout_manager: this.layout, + style_class: 'overview-controls', + clip_to_allocation: true, + }); + + this._visible = true; + this._inDrag = false; + + Main.overview.connect('hiding', this._onOverviewHiding.bind(this)); + + Main.overview.connect('item-drag-begin', this._onDragBegin.bind(this)); + Main.overview.connect('item-drag-end', this._onDragEnd.bind(this)); + Main.overview.connect('item-drag-cancelled', this._onDragEnd.bind(this)); + + Main.overview.connect('window-drag-begin', this._onWindowDragBegin.bind(this)); + Main.overview.connect('window-drag-cancelled', this._onWindowDragEnd.bind(this)); + Main.overview.connect('window-drag-end', this._onWindowDragEnd.bind(this)); + } + + _getSlide() { + throw new GObject.NotImplementedError('_getSlide in %s'.format(this.constructor.name)); + } + + _updateSlide() { + this.ease_property('@layout.slide-x', this._getSlide(), { + mode: Clutter.AnimationMode.EASE_OUT_QUAD, + duration: SIDE_CONTROLS_ANIMATION_TIME, + }); + } + + getVisibleWidth() { + let child = this.get_first_child(); + let [, , natWidth] = child.get_preferred_size(); + return natWidth; + } + + _getTranslation() { + let child = this.get_first_child(); + let direction = getRtlSlideDirection(this.layout.slideDirection, child); + let visibleWidth = this.getVisibleWidth(); + + if (direction == SlideDirection.LEFT) + return -visibleWidth; + else + return visibleWidth; + } + + _updateTranslation() { + let translationStart = 0; + let translationEnd = 0; + let translation = this._getTranslation(); + + let shouldShow = this._getSlide() > 0; + if (shouldShow) + translationStart = translation; + else + translationEnd = translation; + + if (this.translation_x === translationEnd) + return; + + this.translation_x = translationStart; + this.ease({ + translation_x: translationEnd, + mode: Clutter.AnimationMode.EASE_OUT_QUAD, + duration: SIDE_CONTROLS_ANIMATION_TIME, + }); + } + + _onOverviewHiding() { + // We need to explicitly slideOut since showing pages + // doesn't imply sliding out, instead, hiding the overview does. + this.slideOut(); + } + + _onWindowDragBegin() { + this._onDragBegin(); + } + + _onWindowDragEnd() { + this._onDragEnd(); + } + + _onDragBegin() { + this._inDrag = true; + this._updateTranslation(); + this._updateSlide(); + } + + _onDragEnd() { + this._inDrag = false; + this._updateSlide(); + } + + fadeIn() { + this.ease({ + opacity: 255, + duration: SIDE_CONTROLS_ANIMATION_TIME / 2, + mode: Clutter.AnimationMode.EASE_IN_QUAD, + }); + } + + fadeHalf() { + this.ease({ + opacity: 128, + duration: SIDE_CONTROLS_ANIMATION_TIME / 2, + mode: Clutter.AnimationMode.EASE_OUT_QUAD, + }); + } + + slideIn() { + this._visible = true; + // we will update slide_x and the translation from pageEmpty + } + + slideOut() { + this._visible = false; + this._updateTranslation(); + // we will update slide_x from pageEmpty + } + + pageEmpty() { + // When pageEmpty is received, there's no visible view in the + // selector; this means we can now safely set the full slide for + // the next page, since slideIn or slideOut might have been called, + // changing the visibility + this.remove_transition('@layout.slide-x'); + this.layout.slide_x = this._getSlide(); + this._updateTranslation(); + } +}); + +var ThumbnailsSlider = GObject.registerClass( +class ThumbnailsSlider extends SlidingControl { + _init(thumbnailsBox) { + super._init({ slideDirection: SlideDirection.RIGHT }); + + this._thumbnailsBox = thumbnailsBox; + + this.request_mode = Clutter.RequestMode.WIDTH_FOR_HEIGHT; + this.reactive = true; + this.track_hover = true; + this.add_actor(this._thumbnailsBox); + + Main.layoutManager.connect('monitors-changed', this._updateSlide.bind(this)); + global.workspace_manager.connect('active-workspace-changed', + this._updateSlide.bind(this)); + global.workspace_manager.connect('notify::n-workspaces', + this._updateSlide.bind(this)); + this.connect('notify::hover', this._updateSlide.bind(this)); + this._thumbnailsBox.bind_property('visible', this, 'visible', GObject.BindingFlags.SYNC_CREATE); + } + + _getAlwaysZoomOut() { + // Always show the pager on hover, during a drag, or if workspaces are + // actually used, e.g. there are windows on any non-active workspace + let workspaceManager = global.workspace_manager; + let alwaysZoomOut = this.hover || + this._inDrag || + !Meta.prefs_get_dynamic_workspaces() || + workspaceManager.n_workspaces > 2 || + workspaceManager.get_active_workspace_index() != 0; + + if (!alwaysZoomOut) { + let monitors = Main.layoutManager.monitors; + let primary = Main.layoutManager.primaryMonitor; + + /* Look for any monitor to the right of the primary, if there is + * one, we always keep zoom out, otherwise its hard to reach + * the thumbnail area without passing into the next monitor. */ + for (let i = 0; i < monitors.length; i++) { + if (monitors[i].x >= primary.x + primary.width) { + alwaysZoomOut = true; + break; + } + } + } + + return alwaysZoomOut; + } + + getNonExpandedWidth() { + let child = this.get_first_child(); + return child.get_theme_node().get_length('visible-width'); + } + + _onDragEnd() { + this.sync_hover(); + super._onDragEnd(); + } + + _getSlide() { + if (!this._visible) + return 0; + + let alwaysZoomOut = this._getAlwaysZoomOut(); + if (alwaysZoomOut) + return 1; + + let child = this.get_first_child(); + let preferredHeight = child.get_preferred_height(-1)[1]; + let expandedWidth = child.get_preferred_width(preferredHeight)[1]; + + return this.getNonExpandedWidth() / expandedWidth; + } + + getVisibleWidth() { + let alwaysZoomOut = this._getAlwaysZoomOut(); + if (alwaysZoomOut) + return super.getVisibleWidth(); + else + return this.getNonExpandedWidth(); + } +}); + +var DashSlider = GObject.registerClass( +class DashSlider extends SlidingControl { + _init(dash) { + super._init({ slideDirection: SlideDirection.LEFT }); + + this._dash = dash; + + // SlideLayout reads the actor's expand flags to decide + // whether to allocate the natural size to its child, or the whole + // available allocation + this._dash.x_expand = true; + + this.x_expand = true; + this.x_align = Clutter.ActorAlign.START; + this.y_expand = true; + + this.add_actor(this._dash); + + this._dash.connect('icon-size-changed', this._updateSlide.bind(this)); + } + + _getSlide() { + if (this._visible || this._inDrag) + return 1; + else + return 0; + } + + _onWindowDragBegin() { + this.fadeHalf(); + } + + _onWindowDragEnd() { + this.fadeIn(); + } +}); + +var DashSpacer = GObject.registerClass( +class DashSpacer extends St.Widget { + _init(params) { + super._init(params); + + this._bindConstraint = null; + } + + setDashActor(dashActor) { + if (this._bindConstraint) { + this.remove_constraint(this._bindConstraint); + this._bindConstraint = null; + } + + if (dashActor) { + this._bindConstraint = new Clutter.BindConstraint({ source: dashActor, + coordinate: Clutter.BindCoordinate.SIZE }); + this.add_constraint(this._bindConstraint); + } + } + + vfunc_get_preferred_width(forHeight) { + if (this._bindConstraint) + return this._bindConstraint.source.get_preferred_width(forHeight); + return super.vfunc_get_preferred_width(forHeight); + } + + vfunc_get_preferred_height(forWidth) { + if (this._bindConstraint) + return this._bindConstraint.source.get_preferred_height(forWidth); + return super.vfunc_get_preferred_height(forWidth); + } +}); + +var ControlsLayout = GObject.registerClass({ + Signals: { 'allocation-changed': {} }, +}, class ControlsLayout extends Clutter.BinLayout { + vfunc_allocate(container, box) { + super.vfunc_allocate(container, box); + this.emit('allocation-changed'); + } +}); + +var ControlsManager = GObject.registerClass( +class ControlsManager extends St.Widget { + _init(searchEntry) { + let layout = new ControlsLayout(); + super._init({ + layout_manager: layout, + x_expand: true, + y_expand: true, + clip_to_allocation: true, + }); + + this.dash = new Dash.Dash(); + this._dashSlider = new DashSlider(this.dash); + this._dashSpacer = new DashSpacer(); + this._dashSpacer.setDashActor(this._dashSlider); + + let workspaceManager = global.workspace_manager; + let activeWorkspaceIndex = workspaceManager.get_active_workspace_index(); + + this._workspaceAdjustment = new St.Adjustment({ + actor: this, + value: activeWorkspaceIndex, + lower: 0, + page_increment: 1, + page_size: 1, + step_increment: 0, + upper: workspaceManager.n_workspaces, + }); + + this._nWorkspacesNotifyId = + workspaceManager.connect('notify::n-workspaces', + this._updateAdjustment.bind(this)); + + this._thumbnailsBox = + new WorkspaceThumbnail.ThumbnailsBox(this._workspaceAdjustment); + this._thumbnailsSlider = new ThumbnailsSlider(this._thumbnailsBox); + + this.viewSelector = new ViewSelector.ViewSelector(searchEntry, + this._workspaceAdjustment, this.dash.showAppsButton); + this.viewSelector.connect('page-changed', this._setVisibility.bind(this)); + this.viewSelector.connect('page-empty', this._onPageEmpty.bind(this)); + + this._group = new St.BoxLayout({ name: 'overview-group', + x_expand: true, y_expand: true }); + this.add_actor(this._group); + + this.add_actor(this._dashSlider); + + this._group.add_actor(this._dashSpacer); + this._group.add_child(this.viewSelector); + this._group.add_actor(this._thumbnailsSlider); + + Main.overview.connect('showing', this._updateSpacerVisibility.bind(this)); + + this.connect('destroy', this._onDestroy.bind(this)); + } + + _onDestroy() { + global.workspace_manager.disconnect(this._nWorkspacesNotifyId); + } + + _updateAdjustment() { + let workspaceManager = global.workspace_manager; + let newNumWorkspaces = workspaceManager.n_workspaces; + let activeIndex = workspaceManager.get_active_workspace_index(); + + this._workspaceAdjustment.upper = newNumWorkspaces; + + // A workspace might have been inserted or removed before the active + // one, causing the adjustment to go out of sync, so update the value + this._workspaceAdjustment.remove_transition('value'); + this._workspaceAdjustment.value = activeIndex; + } + + _setVisibility() { + // Ignore the case when we're leaving the overview, since + // actors will be made visible again when entering the overview + // next time, and animating them while doing so is just + // unnecessary noise + if (!Main.overview.visible || + (Main.overview.animationInProgress && !Main.overview.visibleTarget)) + return; + + let activePage = this.viewSelector.getActivePage(); + let dashVisible = activePage == ViewSelector.ViewPage.WINDOWS || + activePage == ViewSelector.ViewPage.APPS; + let thumbnailsVisible = activePage == ViewSelector.ViewPage.WINDOWS; + + if (dashVisible) + this._dashSlider.slideIn(); + else + this._dashSlider.slideOut(); + + if (thumbnailsVisible) + this._thumbnailsSlider.slideIn(); + else + this._thumbnailsSlider.slideOut(); + } + + _updateSpacerVisibility() { + if (Main.overview.animationInProgress && !Main.overview.visibleTarget) + return; + + let activePage = this.viewSelector.getActivePage(); + this._dashSpacer.visible = activePage == ViewSelector.ViewPage.WINDOWS; + } + + _onPageEmpty() { + this._dashSlider.pageEmpty(); + this._thumbnailsSlider.pageEmpty(); + + this._updateSpacerVisibility(); + } +}); |