992 lines
36 KiB
JavaScript
992 lines
36 KiB
JavaScript
// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
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const { Clutter, GObject, Meta, St } = imports.gi;
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const Params = imports.misc.params;
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const Tweener = imports.ui.tweener;
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const Main = imports.ui.main;
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var ICON_SIZE = 96;
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var MIN_ICON_SIZE = 16;
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var EXTRA_SPACE_ANIMATION_TIME = 0.25;
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var ANIMATION_TIME_IN = 0.350;
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var ANIMATION_TIME_OUT = 1/2 * ANIMATION_TIME_IN;
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var ANIMATION_MAX_DELAY_FOR_ITEM = 2/3 * ANIMATION_TIME_IN;
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var ANIMATION_BASE_DELAY_FOR_ITEM = 1/4 * ANIMATION_MAX_DELAY_FOR_ITEM;
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var ANIMATION_MAX_DELAY_OUT_FOR_ITEM = 2/3 * ANIMATION_TIME_OUT;
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var ANIMATION_FADE_IN_TIME_FOR_ITEM = 1/4 * ANIMATION_TIME_IN;
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var ANIMATION_BOUNCE_ICON_SCALE = 1.1;
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var AnimationDirection = {
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IN: 0,
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OUT: 1
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};
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var APPICON_ANIMATION_OUT_SCALE = 3;
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var APPICON_ANIMATION_OUT_TIME = 0.25;
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var BaseIcon = GObject.registerClass(
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class BaseIcon extends St.Bin {
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_init(label, params) {
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params = Params.parse(params, { createIcon: null,
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setSizeManually: false,
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showLabel: true });
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let styleClass = 'overview-icon';
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if (params.showLabel)
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styleClass += ' overview-icon-with-label';
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super._init({ style_class: styleClass,
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x_fill: true,
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y_fill: true });
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this.connect('destroy', this._onDestroy.bind(this));
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this._box = new St.BoxLayout({ vertical: true });
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this.set_child(this._box);
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this.iconSize = ICON_SIZE;
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this._iconBin = new St.Bin({ x_align: St.Align.MIDDLE,
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y_align: St.Align.MIDDLE });
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this._box.add_actor(this._iconBin);
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if (params.showLabel) {
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this.label = new St.Label({ text: label });
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this._box.add_actor(this.label);
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} else {
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this.label = null;
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}
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if (params.createIcon)
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this.createIcon = params.createIcon;
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this._setSizeManually = params.setSizeManually;
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this.icon = null;
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let cache = St.TextureCache.get_default();
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this._iconThemeChangedId = cache.connect('icon-theme-changed', this._onIconThemeChanged.bind(this));
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}
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vfunc_get_preferred_width(forHeight) {
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// Return the actual height to keep the squared aspect
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return this.get_preferred_height(-1);
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}
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// This can be overridden by a subclass, or by the createIcon
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// parameter to _init()
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createIcon(size) {
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throw new GObject.NotImplementedError(`createIcon in ${this.constructor.name}`);
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}
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setIconSize(size) {
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if (!this._setSizeManually)
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throw new Error('setSizeManually has to be set to use setIconsize');
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if (size == this.iconSize)
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return;
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this._createIconTexture(size);
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}
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_createIconTexture(size) {
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if (this.icon)
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this.icon.destroy();
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this.iconSize = size;
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this.icon = this.createIcon(this.iconSize);
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this._iconBin.child = this.icon;
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}
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vfunc_style_changed() {
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super.vfunc_style_changed();
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let node = this.get_theme_node();
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let size;
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if (this._setSizeManually) {
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size = this.iconSize;
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} else {
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let [found, len] = node.lookup_length('icon-size', false);
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size = found ? len : ICON_SIZE;
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}
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if (this.iconSize == size && this._iconBin.child)
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return;
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this._createIconTexture(size);
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}
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_onDestroy() {
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if (this._iconThemeChangedId > 0) {
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let cache = St.TextureCache.get_default();
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cache.disconnect(this._iconThemeChangedId);
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this._iconThemeChangedId = 0;
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}
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}
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_onIconThemeChanged() {
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this._createIconTexture(this.iconSize);
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}
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animateZoomOut() {
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// Animate only the child instead of the entire actor, so the
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// styles like hover and running are not applied while
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// animating.
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zoomOutActor(this.child);
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}
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});
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function clamp(value, min, max) {
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return Math.max(Math.min(value, max), min);
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};
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function zoomOutActor(actor) {
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let actorClone = new Clutter.Clone({ source: actor,
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reactive: false });
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let [width, height] = actor.get_transformed_size();
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let [x, y] = actor.get_transformed_position();
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actorClone.set_size(width, height);
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actorClone.set_position(x, y);
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actorClone.opacity = 255;
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actorClone.set_pivot_point(0.5, 0.5);
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Main.uiGroup.add_actor(actorClone);
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// Avoid monitor edges to not zoom outside the current monitor
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let monitor = Main.layoutManager.findMonitorForActor(actor);
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let scaledWidth = width * APPICON_ANIMATION_OUT_SCALE;
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let scaledHeight = height * APPICON_ANIMATION_OUT_SCALE;
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let scaledX = x - (scaledWidth - width) / 2;
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let scaledY = y - (scaledHeight - height) / 2;
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let containedX = clamp(scaledX, monitor.x, monitor.x + monitor.width - scaledWidth);
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let containedY = clamp(scaledY, monitor.y, monitor.y + monitor.height - scaledHeight);
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Tweener.addTween(actorClone,
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{ time: APPICON_ANIMATION_OUT_TIME,
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scale_x: APPICON_ANIMATION_OUT_SCALE,
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scale_y: APPICON_ANIMATION_OUT_SCALE,
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translation_x: containedX - scaledX,
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translation_y: containedY - scaledY,
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opacity: 0,
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transition: 'easeOutQuad',
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onComplete() {
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actorClone.destroy();
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}
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});
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}
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var IconGrid = GObject.registerClass({
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Signals: {'animation-done': {},
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'child-focused': { param_types: [Clutter.Actor.$gtype]} },
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}, class IconGrid extends St.Widget {
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_init(params) {
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super._init({ style_class: 'icon-grid',
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y_align: Clutter.ActorAlign.START });
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params = Params.parse(params, { rowLimit: null,
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columnLimit: null,
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minRows: 1,
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minColumns: 1,
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fillParent: false,
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xAlign: St.Align.MIDDLE,
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padWithSpacing: false });
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this._rowLimit = params.rowLimit;
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this._colLimit = params.columnLimit;
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this._minRows = params.minRows;
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this._minColumns = params.minColumns;
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this._xAlign = params.xAlign;
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this._fillParent = params.fillParent;
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this._padWithSpacing = params.padWithSpacing;
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this.topPadding = 0;
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this.bottomPadding = 0;
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this.rightPadding = 0;
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this.leftPadding = 0;
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this._items = [];
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this._clonesAnimating = [];
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// Pulled from CSS, but hardcode some defaults here
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this._spacing = 0;
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this._hItemSize = this._vItemSize = ICON_SIZE;
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this._fixedHItemSize = this._fixedVItemSize = undefined;
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this.connect('style-changed', this._onStyleChanged.bind(this));
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// Cancel animations when hiding the overview, to avoid icons
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// swarming into the void ...
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this.connect('notify::mapped', () => {
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if (!this.mapped)
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this._cancelAnimation();
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});
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this.connect('actor-added', this._childAdded.bind(this));
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this.connect('actor-removed', this._childRemoved.bind(this));
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}
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_keyFocusIn(actor) {
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this.emit('child-focused', actor);
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}
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_childAdded(grid, child) {
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child._iconGridKeyFocusInId = child.connect('key-focus-in', this._keyFocusIn.bind(this));
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}
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_childRemoved(grid, child) {
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child.disconnect(child._iconGridKeyFocusInId);
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}
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vfunc_get_preferred_width(forHeight) {
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if (this._fillParent)
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// Ignore all size requests of children and request a size of 0;
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// later we'll allocate as many children as fit the parent
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return [0, 0];
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let nChildren = this.get_n_children();
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let nColumns = this._colLimit ? Math.min(this._colLimit,
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nChildren)
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: nChildren;
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let totalSpacing = Math.max(0, nColumns - 1) * this._getSpacing();
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// Kind of a lie, but not really an issue right now. If
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// we wanted to support some sort of hidden/overflow that would
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// need higher level design
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let minSize = this._getHItemSize() + this.leftPadding + this.rightPadding;
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let natSize = nColumns * this._getHItemSize() + totalSpacing + this.leftPadding + this.rightPadding;
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return this.get_theme_node().adjust_preferred_width(minSize, natSize);
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}
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_getVisibleChildren() {
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return this.get_children().filter(actor => actor.visible);
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}
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vfunc_get_preferred_height(forWidth) {
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if (this._fillParent)
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// Ignore all size requests of children and request a size of 0;
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// later we'll allocate as many children as fit the parent
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return [0, 0];
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let themeNode = this.get_theme_node();
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let children = this._getVisibleChildren();
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let nColumns;
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forWidth = themeNode.adjust_for_width(forWidth);
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if (forWidth < 0)
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nColumns = children.length;
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else
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[nColumns, ] = this._computeLayout(forWidth);
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let nRows;
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if (nColumns > 0)
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nRows = Math.ceil(children.length / nColumns);
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else
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nRows = 0;
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if (this._rowLimit)
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nRows = Math.min(nRows, this._rowLimit);
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let totalSpacing = Math.max(0, nRows - 1) * this._getSpacing();
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let height = nRows * this._getVItemSize() + totalSpacing + this.topPadding + this.bottomPadding;
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return themeNode.adjust_preferred_height(height, height);
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}
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vfunc_allocate(box, flags) {
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this.set_allocation(box, flags);
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let themeNode = this.get_theme_node();
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box = themeNode.get_content_box(box);
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if (this._fillParent) {
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// Reset the passed in box to fill the parent
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let parentBox = this.get_parent().allocation;
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let gridBox = themeNode.get_content_box(parentBox);
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box = themeNode.get_content_box(gridBox);
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}
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let children = this._getVisibleChildren();
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let availWidth = box.x2 - box.x1;
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let availHeight = box.y2 - box.y1;
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let spacing = this._getSpacing();
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let [nColumns, usedWidth] = this._computeLayout(availWidth);
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let leftEmptySpace;
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switch(this._xAlign) {
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case St.Align.START:
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leftEmptySpace = 0;
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break;
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case St.Align.MIDDLE:
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leftEmptySpace = Math.floor((availWidth - usedWidth) / 2);
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break;
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case St.Align.END:
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leftEmptySpace = availWidth - usedWidth;
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}
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let animating = this._clonesAnimating.length > 0;
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let x = box.x1 + leftEmptySpace + this.leftPadding;
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let y = box.y1 + this.topPadding;
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let columnIndex = 0;
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let rowIndex = 0;
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for (let i = 0; i < children.length; i++) {
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let childBox = this._calculateChildBox(children[i], x, y, box);
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if (this._rowLimit && rowIndex >= this._rowLimit ||
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this._fillParent && childBox.y2 > availHeight - this.bottomPadding) {
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children[i].opacity = 0;
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} else {
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if (!animating)
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children[i].opacity = 255;
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children[i].allocate(childBox, flags);
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}
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columnIndex++;
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if (columnIndex == nColumns) {
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columnIndex = 0;
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rowIndex++;
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}
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if (columnIndex == 0) {
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y += this._getVItemSize() + spacing;
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x = box.x1 + leftEmptySpace + this.leftPadding;
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} else {
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x += this._getHItemSize() + spacing;
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}
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}
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}
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vfunc_get_paint_volume(paintVolume) {
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// Setting the paint volume does not make sense when we don't have
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// any allocation
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if (!this.has_allocation())
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return false;
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let themeNode = this.get_theme_node();
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let allocationBox = this.get_allocation_box();
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let paintBox = themeNode.get_paint_box(allocationBox);
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let origin = new Clutter.Vertex();
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origin.x = paintBox.x1 - allocationBox.x1;
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origin.y = paintBox.y1 - allocationBox.y1;
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origin.z = 0.0;
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paintVolume.set_origin(origin);
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paintVolume.set_width(paintBox.x2 - paintBox.x1);
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paintVolume.set_height(paintBox.y2 - paintBox.y1);
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if (this.get_clip_to_allocation())
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return true;
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for (let child = this.get_first_child();
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child != null;
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child = child.get_next_sibling()) {
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if (!child.visible || !child.opacity)
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continue;
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let childVolume = child.get_transformed_paint_volume(this);
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if (!childVolume)
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return false
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paintVolume.union(childVolume);
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}
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return true;
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}
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/**
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* Intended to be override by subclasses if they need a different
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* set of items to be animated.
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*/
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_getChildrenToAnimate() {
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return this._getVisibleChildren();
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}
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_cancelAnimation() {
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this._clonesAnimating.forEach(clone => { clone.destroy(); });
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this._clonesAnimating = [];
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}
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_animationDone() {
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this._clonesAnimating.forEach(clone => {
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clone.source.reactive = true;
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clone.source.opacity = 255;
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clone.destroy();
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});
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this._clonesAnimating = [];
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this.emit('animation-done');
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}
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animatePulse(animationDirection) {
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if (animationDirection != AnimationDirection.IN)
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throw new GObject.NotImplementedError("Pulse animation only implements " +
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"'in' animation direction");
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this._cancelAnimation();
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let actors = this._getChildrenToAnimate();
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if (actors.length == 0) {
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this._animationDone();
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return;
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}
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// For few items the animation can be slow, so use a smaller
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// delay when there are less than 4 items
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// (ANIMATION_BASE_DELAY_FOR_ITEM = 1/4 *
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// ANIMATION_MAX_DELAY_FOR_ITEM)
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let maxDelay = Math.min(ANIMATION_BASE_DELAY_FOR_ITEM * actors.length,
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ANIMATION_MAX_DELAY_FOR_ITEM);
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for (let index = 0; index < actors.length; index++) {
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let actor = actors[index];
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actor.set_scale(0, 0);
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actor.set_pivot_point(0.5, 0.5);
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let delay = index / actors.length * maxDelay;
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let bounceUpTime = ANIMATION_TIME_IN / 4;
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let isLastItem = index == actors.length - 1;
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Tweener.addTween(actor,
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{ time: bounceUpTime,
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transition: 'easeInOutQuad',
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delay: delay,
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scale_x: ANIMATION_BOUNCE_ICON_SCALE,
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scale_y: ANIMATION_BOUNCE_ICON_SCALE,
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onComplete: () => {
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Tweener.addTween(actor,
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{ time: ANIMATION_TIME_IN - bounceUpTime,
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transition: 'easeInOutQuad',
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scale_x: 1,
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scale_y: 1,
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onComplete: () => {
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if (isLastItem)
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this._animationDone();
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}
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});
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}
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});
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}
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}
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animateSpring(animationDirection, sourceActor) {
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this._cancelAnimation();
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let actors = this._getChildrenToAnimate();
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if (actors.length == 0) {
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this._animationDone();
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return;
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}
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let [sourceX, sourceY] = sourceActor.get_transformed_position();
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let [sourceWidth, sourceHeight] = sourceActor.get_size();
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// Get the center
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let [sourceCenterX, sourceCenterY] = [sourceX + sourceWidth / 2, sourceY + sourceHeight / 2];
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// Design decision, 1/2 of the source actor size.
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let [sourceScaledWidth, sourceScaledHeight] = [sourceWidth / 2, sourceHeight / 2];
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actors.forEach(actor => {
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let [actorX, actorY] = actor._transformedPosition = actor.get_transformed_position();
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let [x, y] = [actorX - sourceX, actorY - sourceY];
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actor._distance = Math.sqrt(x * x + y * y);
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});
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let maxDist = actors.reduce((prev, cur) => {
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return Math.max(prev, cur._distance);
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}, 0);
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let minDist = actors.reduce((prev, cur) => {
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return Math.min(prev, cur._distance);
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}, Infinity);
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let normalization = maxDist - minDist;
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for (let index = 0; index < actors.length; index++) {
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let actor = actors[index];
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actor.opacity = 0;
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actor.reactive = false;
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let actorClone = new Clutter.Clone({ source: actor });
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this._clonesAnimating.push(actorClone);
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Main.uiGroup.add_actor(actorClone);
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let [width, height,,] = this._getAllocatedChildSizeAndSpacing(actor);
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actorClone.set_size(width, height);
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let scaleX = sourceScaledWidth / width;
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let scaleY = sourceScaledHeight / height;
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let [adjustedSourcePositionX, adjustedSourcePositionY] = [sourceCenterX - sourceScaledWidth / 2, sourceCenterY - sourceScaledHeight / 2];
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let movementParams, fadeParams;
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if (animationDirection == AnimationDirection.IN) {
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let isLastItem = actor._distance == minDist;
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actorClone.opacity = 0;
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actorClone.set_scale(scaleX, scaleY);
|
|
|
|
actorClone.set_position(adjustedSourcePositionX, adjustedSourcePositionY);
|
|
|
|
let delay = (1 - (actor._distance - minDist) / normalization) * ANIMATION_MAX_DELAY_FOR_ITEM;
|
|
let [finalX, finalY] = actor._transformedPosition;
|
|
movementParams = { time: ANIMATION_TIME_IN,
|
|
transition: 'easeInOutQuad',
|
|
delay: delay,
|
|
x: finalX,
|
|
y: finalY,
|
|
scale_x: 1,
|
|
scale_y: 1,
|
|
onComplete: () => {
|
|
if (isLastItem)
|
|
this._animationDone();
|
|
}};
|
|
fadeParams = { time: ANIMATION_FADE_IN_TIME_FOR_ITEM,
|
|
transition: 'easeInOutQuad',
|
|
delay: delay,
|
|
opacity: 255 };
|
|
} else {
|
|
let isLastItem = actor._distance == maxDist;
|
|
|
|
let [startX, startY] = actor._transformedPosition;
|
|
actorClone.set_position(startX, startY);
|
|
|
|
let delay = (actor._distance - minDist) / normalization * ANIMATION_MAX_DELAY_OUT_FOR_ITEM;
|
|
movementParams = { time: ANIMATION_TIME_OUT,
|
|
transition: 'easeInOutQuad',
|
|
delay: delay,
|
|
x: adjustedSourcePositionX,
|
|
y: adjustedSourcePositionY,
|
|
scale_x: scaleX,
|
|
scale_y: scaleY,
|
|
onComplete: () => {
|
|
if (isLastItem)
|
|
this._animationDone();
|
|
}};
|
|
fadeParams = { time: ANIMATION_FADE_IN_TIME_FOR_ITEM,
|
|
transition: 'easeInOutQuad',
|
|
delay: ANIMATION_TIME_OUT + delay - ANIMATION_FADE_IN_TIME_FOR_ITEM,
|
|
opacity: 0 };
|
|
}
|
|
|
|
|
|
Tweener.addTween(actorClone, movementParams);
|
|
Tweener.addTween(actorClone, fadeParams);
|
|
}
|
|
}
|
|
|
|
_getAllocatedChildSizeAndSpacing(child) {
|
|
let [,, natWidth, natHeight] = child.get_preferred_size();
|
|
let width = Math.min(this._getHItemSize(), natWidth);
|
|
let xSpacing = Math.max(0, width - natWidth) / 2;
|
|
let height = Math.min(this._getVItemSize(), natHeight);
|
|
let ySpacing = Math.max(0, height - natHeight) / 2;
|
|
return [width, height, xSpacing, ySpacing];
|
|
}
|
|
|
|
_calculateChildBox(child, x, y, box) {
|
|
/* Center the item in its allocation horizontally */
|
|
let [width, height, childXSpacing, childYSpacing] =
|
|
this._getAllocatedChildSizeAndSpacing(child);
|
|
|
|
let childBox = new Clutter.ActorBox();
|
|
if (Clutter.get_default_text_direction() == Clutter.TextDirection.RTL) {
|
|
let _x = box.x2 - (x + width);
|
|
childBox.x1 = Math.floor(_x - childXSpacing);
|
|
} else {
|
|
childBox.x1 = Math.floor(x + childXSpacing);
|
|
}
|
|
childBox.y1 = Math.floor(y + childYSpacing);
|
|
childBox.x2 = childBox.x1 + width;
|
|
childBox.y2 = childBox.y1 + height;
|
|
return childBox;
|
|
}
|
|
|
|
columnsForWidth(rowWidth) {
|
|
return this._computeLayout(rowWidth)[0];
|
|
}
|
|
|
|
getRowLimit() {
|
|
return this._rowLimit;
|
|
}
|
|
|
|
_computeLayout(forWidth) {
|
|
let nColumns = 0;
|
|
let usedWidth = this.leftPadding + this.rightPadding;
|
|
let spacing = this._getSpacing();
|
|
|
|
while ((this._colLimit == null || nColumns < this._colLimit) &&
|
|
(usedWidth + this._getHItemSize() <= forWidth)) {
|
|
usedWidth += this._getHItemSize() + spacing;
|
|
nColumns += 1;
|
|
}
|
|
|
|
if (nColumns > 0)
|
|
usedWidth -= spacing;
|
|
|
|
return [nColumns, usedWidth];
|
|
}
|
|
|
|
_onStyleChanged() {
|
|
let themeNode = this.get_theme_node();
|
|
this._spacing = themeNode.get_length('spacing');
|
|
this._hItemSize = themeNode.get_length('-shell-grid-horizontal-item-size') || ICON_SIZE;
|
|
this._vItemSize = themeNode.get_length('-shell-grid-vertical-item-size') || ICON_SIZE;
|
|
this.queue_relayout();
|
|
}
|
|
|
|
nRows(forWidth) {
|
|
let children = this._getVisibleChildren();
|
|
let nColumns = (forWidth < 0) ? children.length : this._computeLayout(forWidth)[0];
|
|
let nRows = (nColumns > 0) ? Math.ceil(children.length / nColumns) : 0;
|
|
if (this._rowLimit)
|
|
nRows = Math.min(nRows, this._rowLimit);
|
|
return nRows;
|
|
}
|
|
|
|
rowsForHeight(forHeight) {
|
|
return Math.floor((forHeight - (this.topPadding + this.bottomPadding) + this._getSpacing()) / (this._getVItemSize() + this._getSpacing()));
|
|
}
|
|
|
|
usedHeightForNRows(nRows) {
|
|
return (this._getVItemSize() + this._getSpacing()) * nRows - this._getSpacing() + this.topPadding + this.bottomPadding;
|
|
}
|
|
|
|
usedWidth(forWidth) {
|
|
return this.usedWidthForNColumns(this.columnsForWidth(forWidth));
|
|
}
|
|
|
|
usedWidthForNColumns(columns) {
|
|
let usedWidth = columns * (this._getHItemSize() + this._getSpacing());
|
|
usedWidth -= this._getSpacing();
|
|
return usedWidth + this.leftPadding + this.rightPadding;
|
|
}
|
|
|
|
removeAll() {
|
|
this._items = [];
|
|
this.remove_all_children();
|
|
}
|
|
|
|
destroyAll() {
|
|
this._items = [];
|
|
this.destroy_all_children();
|
|
}
|
|
|
|
addItem(item, index) {
|
|
if (!(item.icon instanceof BaseIcon))
|
|
throw new Error('Only items with a BaseIcon icon property can be added to IconGrid');
|
|
|
|
this._items.push(item);
|
|
if (index !== undefined)
|
|
this.insert_child_at_index(item.actor, index);
|
|
else
|
|
this.add_actor(item.actor);
|
|
}
|
|
|
|
removeItem(item) {
|
|
this.remove_child(item.actor);
|
|
}
|
|
|
|
getItemAtIndex(index) {
|
|
return this.get_child_at_index(index);
|
|
}
|
|
|
|
visibleItemsCount() {
|
|
return this.get_children().filter(c => c.is_visible()).length;
|
|
}
|
|
|
|
setSpacing(spacing) {
|
|
this._fixedSpacing = spacing;
|
|
}
|
|
|
|
_getSpacing() {
|
|
return this._fixedSpacing ? this._fixedSpacing : this._spacing;
|
|
}
|
|
|
|
_getHItemSize() {
|
|
return this._fixedHItemSize ? this._fixedHItemSize : this._hItemSize;
|
|
}
|
|
|
|
_getVItemSize() {
|
|
return this._fixedVItemSize ? this._fixedVItemSize : this._vItemSize;
|
|
}
|
|
|
|
_updateSpacingForSize(availWidth, availHeight) {
|
|
let maxEmptyVArea = availHeight - this._minRows * this._getVItemSize();
|
|
let maxEmptyHArea = availWidth - this._minColumns * this._getHItemSize();
|
|
let maxHSpacing, maxVSpacing;
|
|
|
|
if (this._padWithSpacing) {
|
|
// minRows + 1 because we want to put spacing before the first row, so it is like we have one more row
|
|
// to divide the empty space
|
|
maxVSpacing = Math.floor(maxEmptyVArea / (this._minRows +1));
|
|
maxHSpacing = Math.floor(maxEmptyHArea / (this._minColumns +1));
|
|
} else {
|
|
if (this._minRows <= 1)
|
|
maxVSpacing = maxEmptyVArea;
|
|
else
|
|
maxVSpacing = Math.floor(maxEmptyVArea / (this._minRows - 1));
|
|
|
|
if (this._minColumns <= 1)
|
|
maxHSpacing = maxEmptyHArea;
|
|
else
|
|
maxHSpacing = Math.floor(maxEmptyHArea / (this._minColumns - 1));
|
|
}
|
|
|
|
let maxSpacing = Math.min(maxHSpacing, maxVSpacing);
|
|
// Limit spacing to the item size
|
|
maxSpacing = Math.min(maxSpacing, Math.min(this._getVItemSize(), this._getHItemSize()));
|
|
// The minimum spacing, regardless of whether it satisfies the row/columng minima,
|
|
// is the spacing we get from CSS.
|
|
let spacing = Math.max(this._spacing, maxSpacing);
|
|
this.setSpacing(spacing);
|
|
if (this._padWithSpacing)
|
|
this.topPadding = this.rightPadding = this.bottomPadding = this.leftPadding = spacing;
|
|
}
|
|
|
|
/**
|
|
* This function must to be called before iconGrid allocation,
|
|
* to know how much spacing can the grid has
|
|
*/
|
|
adaptToSize(availWidth, availHeight) {
|
|
this._fixedHItemSize = this._hItemSize;
|
|
this._fixedVItemSize = this._vItemSize;
|
|
this._updateSpacingForSize(availWidth, availHeight);
|
|
|
|
if (this.columnsForWidth(availWidth) < this._minColumns || this.rowsForHeight(availHeight) < this._minRows) {
|
|
let neededWidth = this.usedWidthForNColumns(this._minColumns) - availWidth ;
|
|
let neededHeight = this.usedHeightForNRows(this._minRows) - availHeight ;
|
|
|
|
let neededSpacePerItem = (neededWidth > neededHeight) ? Math.ceil(neededWidth / this._minColumns)
|
|
: Math.ceil(neededHeight / this._minRows);
|
|
this._fixedHItemSize = Math.max(this._hItemSize - neededSpacePerItem, MIN_ICON_SIZE);
|
|
this._fixedVItemSize = Math.max(this._vItemSize - neededSpacePerItem, MIN_ICON_SIZE);
|
|
|
|
this._updateSpacingForSize(availWidth, availHeight);
|
|
}
|
|
Meta.later_add(Meta.LaterType.BEFORE_REDRAW,
|
|
this._updateIconSizes.bind(this));
|
|
}
|
|
|
|
// Note that this is ICON_SIZE as used by BaseIcon, not elsewhere in IconGrid; it's a bit messed up
|
|
_updateIconSizes() {
|
|
let scale = Math.min(this._fixedHItemSize, this._fixedVItemSize) / Math.max(this._hItemSize, this._vItemSize);
|
|
let newIconSize = Math.floor(ICON_SIZE * scale);
|
|
for (let i in this._items) {
|
|
this._items[i].icon.setIconSize(newIconSize);
|
|
}
|
|
}
|
|
});
|
|
|
|
var PaginatedIconGrid = GObject.registerClass({
|
|
Signals: {'space-opened': {},
|
|
'space-closed': {} },
|
|
}, class PaginatedIconGrid extends IconGrid {
|
|
_init(params) {
|
|
super._init(params);
|
|
this._nPages = 0;
|
|
this.currentPage = 0;
|
|
this._rowsPerPage = 0;
|
|
this._spaceBetweenPages = 0;
|
|
this._childrenPerPage = 0;
|
|
}
|
|
|
|
vfunc_get_preferred_height(forWidth) {
|
|
let height = (this._availableHeightPerPageForItems() + this.bottomPadding + this.topPadding) * this._nPages + this._spaceBetweenPages * this._nPages;
|
|
return [height, height];
|
|
}
|
|
|
|
vfunc_allocate(box, flags) {
|
|
if (this._childrenPerPage == 0)
|
|
log('computePages() must be called before allocate(); pagination will not work.');
|
|
|
|
this.set_allocation(box, flags);
|
|
|
|
if (this._fillParent) {
|
|
// Reset the passed in box to fill the parent
|
|
let parentBox = this.get_parent().allocation;
|
|
let gridBox = this.get_theme_node().get_content_box(parentBox);
|
|
box = this.get_theme_node().get_content_box(gridBox);
|
|
}
|
|
let children = this._getVisibleChildren();
|
|
let availWidth = box.x2 - box.x1;
|
|
let spacing = this._getSpacing();
|
|
let [nColumns, usedWidth] = this._computeLayout(availWidth);
|
|
|
|
let leftEmptySpace;
|
|
switch(this._xAlign) {
|
|
case St.Align.START:
|
|
leftEmptySpace = 0;
|
|
break;
|
|
case St.Align.MIDDLE:
|
|
leftEmptySpace = Math.floor((availWidth - usedWidth) / 2);
|
|
break;
|
|
case St.Align.END:
|
|
leftEmptySpace = availWidth - usedWidth;
|
|
}
|
|
|
|
let x = box.x1 + leftEmptySpace + this.leftPadding;
|
|
let y = box.y1 + this.topPadding;
|
|
let columnIndex = 0;
|
|
|
|
for (let i = 0; i < children.length; i++) {
|
|
let childBox = this._calculateChildBox(children[i], x, y, box);
|
|
children[i].allocate(childBox, flags);
|
|
children[i].show();
|
|
|
|
columnIndex++;
|
|
if (columnIndex == nColumns) {
|
|
columnIndex = 0;
|
|
}
|
|
if (columnIndex == 0) {
|
|
y += this._getVItemSize() + spacing;
|
|
if ((i + 1) % this._childrenPerPage == 0)
|
|
y += this._spaceBetweenPages - spacing + this.bottomPadding + this.topPadding;
|
|
x = box.x1 + leftEmptySpace + this.leftPadding;
|
|
} else
|
|
x += this._getHItemSize() + spacing;
|
|
}
|
|
}
|
|
|
|
// Overridden from IconGrid
|
|
_getChildrenToAnimate() {
|
|
let children = this._getVisibleChildren();
|
|
let firstIndex = this._childrenPerPage * this.currentPage;
|
|
let lastIndex = firstIndex + this._childrenPerPage;
|
|
|
|
return children.slice(firstIndex, lastIndex);
|
|
}
|
|
|
|
_computePages(availWidthPerPage, availHeightPerPage) {
|
|
let [nColumns, usedWidth] = this._computeLayout(availWidthPerPage);
|
|
let nRows;
|
|
let children = this._getVisibleChildren();
|
|
if (nColumns > 0)
|
|
nRows = Math.ceil(children.length / nColumns);
|
|
else
|
|
nRows = 0;
|
|
if (this._rowLimit)
|
|
nRows = Math.min(nRows, this._rowLimit);
|
|
|
|
// We want to contain the grid inside the parent box with padding
|
|
this._rowsPerPage = this.rowsForHeight(availHeightPerPage);
|
|
this._nPages = Math.ceil(nRows / this._rowsPerPage);
|
|
this._spaceBetweenPages = availHeightPerPage - (this.topPadding + this.bottomPadding) - this._availableHeightPerPageForItems();
|
|
this._childrenPerPage = nColumns * this._rowsPerPage;
|
|
}
|
|
|
|
adaptToSize(availWidth, availHeight) {
|
|
super.adaptToSize(availWidth, availHeight);
|
|
this._computePages(availWidth, availHeight);
|
|
}
|
|
|
|
_availableHeightPerPageForItems() {
|
|
return this.usedHeightForNRows(this._rowsPerPage) - (this.topPadding + this.bottomPadding);
|
|
}
|
|
|
|
nPages() {
|
|
return this._nPages;
|
|
}
|
|
|
|
getPageHeight() {
|
|
return this._availableHeightPerPageForItems();
|
|
}
|
|
|
|
getPageY(pageNumber) {
|
|
if (!this._nPages)
|
|
return 0;
|
|
|
|
let firstPageItem = pageNumber * this._childrenPerPage
|
|
let childBox = this._getVisibleChildren()[firstPageItem].get_allocation_box();
|
|
return childBox.y1 - this.topPadding;
|
|
}
|
|
|
|
getItemPage(item) {
|
|
let children = this._getVisibleChildren();
|
|
let index = children.indexOf(item);
|
|
if (index == -1)
|
|
throw new Error('Item not found.');
|
|
return Math.floor(index / this._childrenPerPage);
|
|
}
|
|
|
|
/**
|
|
* openExtraSpace:
|
|
* @sourceItem: the item for which to create extra space
|
|
* @side: where @sourceItem should be located relative to the created space
|
|
* @nRows: the amount of space to create
|
|
*
|
|
* Pan view to create extra space for @nRows above or below @sourceItem.
|
|
*/
|
|
openExtraSpace(sourceItem, side, nRows) {
|
|
let children = this._getVisibleChildren();
|
|
let index = children.indexOf(sourceItem.actor);
|
|
if (index == -1)
|
|
throw new Error('Item not found.');
|
|
|
|
let pageIndex = Math.floor(index / this._childrenPerPage);
|
|
let pageOffset = pageIndex * this._childrenPerPage;
|
|
|
|
let childrenPerRow = this._childrenPerPage / this._rowsPerPage;
|
|
let sourceRow = Math.floor((index - pageOffset) / childrenPerRow);
|
|
|
|
let nRowsAbove = (side == St.Side.TOP) ? sourceRow + 1
|
|
: sourceRow;
|
|
let nRowsBelow = this._rowsPerPage - nRowsAbove;
|
|
|
|
let nRowsUp, nRowsDown;
|
|
if (side == St.Side.TOP) {
|
|
nRowsDown = Math.min(nRowsBelow, nRows);
|
|
nRowsUp = nRows - nRowsDown;
|
|
} else {
|
|
nRowsUp = Math.min(nRowsAbove, nRows);
|
|
nRowsDown = nRows - nRowsUp;
|
|
}
|
|
|
|
let childrenDown = children.splice(pageOffset +
|
|
nRowsAbove * childrenPerRow,
|
|
nRowsBelow * childrenPerRow);
|
|
let childrenUp = children.splice(pageOffset,
|
|
nRowsAbove * childrenPerRow);
|
|
|
|
// Special case: On the last row with no rows below the icon,
|
|
// there's no need to move any rows either up or down
|
|
if (childrenDown.length == 0 && nRowsUp == 0) {
|
|
this._translatedChildren = [];
|
|
this.emit('space-opened');
|
|
} else {
|
|
this._translateChildren(childrenUp, St.DirectionType.UP, nRowsUp);
|
|
this._translateChildren(childrenDown, St.DirectionType.DOWN, nRowsDown);
|
|
this._translatedChildren = childrenUp.concat(childrenDown);
|
|
}
|
|
}
|
|
|
|
_translateChildren(children, direction, nRows) {
|
|
let translationY = nRows * (this._getVItemSize() + this._getSpacing());
|
|
if (translationY == 0)
|
|
return;
|
|
|
|
if (direction == St.DirectionType.UP)
|
|
translationY *= -1;
|
|
|
|
for (let i = 0; i < children.length; i++) {
|
|
children[i].translation_y = 0;
|
|
let params = { translation_y: translationY,
|
|
time: EXTRA_SPACE_ANIMATION_TIME,
|
|
transition: 'easeInOutQuad'
|
|
};
|
|
if (i == (children.length - 1))
|
|
params.onComplete = () => { this.emit('space-opened'); };
|
|
Tweener.addTween(children[i], params);
|
|
}
|
|
}
|
|
|
|
closeExtraSpace() {
|
|
if (!this._translatedChildren || !this._translatedChildren.length) {
|
|
this.emit('space-closed');
|
|
return;
|
|
}
|
|
|
|
for (let i = 0; i < this._translatedChildren.length; i++) {
|
|
if (!this._translatedChildren[i].translation_y)
|
|
continue;
|
|
Tweener.addTween(this._translatedChildren[i],
|
|
{ translation_y: 0,
|
|
time: EXTRA_SPACE_ANIMATION_TIME,
|
|
transition: 'easeInOutQuad',
|
|
onComplete: () => { this.emit('space-closed'); }
|
|
});
|
|
}
|
|
}
|
|
});
|