1032 lines
39 KiB
JavaScript
1032 lines
39 KiB
JavaScript
// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
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const Clutter = imports.gi.Clutter;
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const Gtk = imports.gi.Gtk;
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const Meta = imports.gi.Meta;
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const Shell = imports.gi.Shell;
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const Signals = imports.signals;
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const St = imports.gi.St;
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const Lang = imports.lang;
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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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const ICON_SIZE = 96;
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const MIN_ICON_SIZE = 16;
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const EXTRA_SPACE_ANIMATION_TIME = 0.25;
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const ANIMATION_TIME_IN = 0.350;
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const ANIMATION_TIME_OUT = 1/2 * ANIMATION_TIME_IN;
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const ANIMATION_MAX_DELAY_FOR_ITEM = 2/3 * ANIMATION_TIME_IN;
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const ANIMATION_BASE_DELAY_FOR_ITEM = 1/4 * ANIMATION_MAX_DELAY_FOR_ITEM;
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const ANIMATION_MAX_DELAY_OUT_FOR_ITEM = 2/3 * ANIMATION_TIME_OUT;
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const ANIMATION_FADE_IN_TIME_FOR_ITEM = 1/4 * ANIMATION_TIME_IN;
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const ANIMATION_BOUNCE_ICON_SCALE = 1.1;
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const AnimationDirection = {
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IN: 0,
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OUT: 1
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};
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const APPICON_ANIMATION_OUT_SCALE = 3;
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const APPICON_ANIMATION_OUT_TIME = 0.25;
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const BaseIcon = new Lang.Class({
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Name: 'BaseIcon',
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_init : function(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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this.actor = new St.Bin({ style_class: styleClass,
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x_fill: true,
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y_fill: true });
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this.actor._delegate = this;
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this.actor.connect('style-changed',
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Lang.bind(this, this._onStyleChanged));
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this.actor.connect('destroy',
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Lang.bind(this, this._onDestroy));
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this._spacing = 0;
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let box = new Shell.GenericContainer();
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box.connect('allocate', Lang.bind(this, this._allocate));
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box.connect('get-preferred-width',
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Lang.bind(this, this._getPreferredWidth));
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box.connect('get-preferred-height',
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Lang.bind(this, this._getPreferredHeight));
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this.actor.set_child(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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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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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', Lang.bind(this, this._onIconThemeChanged));
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},
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_allocate: function(actor, box, flags) {
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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 iconSize = availHeight;
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let [iconMinHeight, iconNatHeight] = this._iconBin.get_preferred_height(-1);
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let [iconMinWidth, iconNatWidth] = this._iconBin.get_preferred_width(-1);
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let preferredHeight = iconNatHeight;
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let childBox = new Clutter.ActorBox();
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if (this.label) {
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let [labelMinHeight, labelNatHeight] = this.label.get_preferred_height(-1);
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preferredHeight += this._spacing + labelNatHeight;
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let labelHeight = availHeight >= preferredHeight ? labelNatHeight
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: labelMinHeight;
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iconSize -= this._spacing + labelHeight;
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childBox.x1 = 0;
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childBox.x2 = availWidth;
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childBox.y1 = iconSize + this._spacing;
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childBox.y2 = childBox.y1 + labelHeight;
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this.label.allocate(childBox, flags);
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}
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childBox.x1 = Math.floor((availWidth - iconNatWidth) / 2);
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childBox.y1 = Math.floor((iconSize - iconNatHeight) / 2);
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childBox.x2 = childBox.x1 + iconNatWidth;
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childBox.y2 = childBox.y1 + iconNatHeight;
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this._iconBin.allocate(childBox, flags);
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},
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_getPreferredWidth: function(actor, forHeight, alloc) {
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this._getPreferredHeight(actor, -1, alloc);
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},
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_getPreferredHeight: function(actor, forWidth, alloc) {
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let [iconMinHeight, iconNatHeight] = this._iconBin.get_preferred_height(forWidth);
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alloc.min_size = iconMinHeight;
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alloc.natural_size = iconNatHeight;
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if (this.label) {
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let [labelMinHeight, labelNatHeight] = this.label.get_preferred_height(forWidth);
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alloc.min_size += this._spacing + labelMinHeight;
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alloc.natural_size += this._spacing + labelNatHeight;
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}
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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: function(size) {
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throw new Error('no implementation of createIcon in ' + this);
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},
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setIconSize: function(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: function(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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_onStyleChanged: function() {
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let node = this.actor.get_theme_node();
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this._spacing = node.get_length('spacing');
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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: function() {
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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: function() {
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this._createIconTexture(this.iconSize);
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},
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animateZoomOut: function() {
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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.actor.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: function() {
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actorClone.destroy();
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}
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});
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}
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const IconGrid = new Lang.Class({
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Name: 'IconGrid',
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_init: function(params) {
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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.actor = new St.BoxLayout({ style_class: 'icon-grid',
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vertical: true });
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this._items = [];
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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._grid = new Shell.GenericContainer();
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this.actor.add(this._grid, { expand: true, y_align: St.Align.START });
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this.actor.connect('style-changed', Lang.bind(this, this._onStyleChanged));
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this._grid.connect('get-preferred-width', Lang.bind(this, this._getPreferredWidth));
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this._grid.connect('get-preferred-height', Lang.bind(this, this._getPreferredHeight));
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this._grid.connect('allocate', Lang.bind(this, this._allocate));
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},
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_getPreferredWidth: function (grid, forHeight, alloc) {
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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;
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let nChildren = this._grid.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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alloc.min_size = this._getHItemSize() + this.leftPadding + this.rightPadding;
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alloc.natural_size = nColumns * this._getHItemSize() + totalSpacing + this.leftPadding + this.rightPadding;
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},
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_getVisibleChildren: function() {
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let children = this._grid.get_children();
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children = children.filter(function(actor) {
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return actor.visible;
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});
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return children;
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},
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_getPreferredHeight: function (grid, forWidth, alloc) {
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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;
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let children = this._getVisibleChildren();
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let nColumns;
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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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alloc.min_size = height;
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alloc.natural_size = height;
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},
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_allocate: function (grid, box, flags) {
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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.actor.get_parent().allocation;
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let gridBox = this.actor.get_theme_node().get_content_box(parentBox);
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box = this._grid.get_theme_node().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 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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this._grid.set_skip_paint(children[i], true);
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} else {
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children[i].allocate(childBox, flags);
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this._grid.set_skip_paint(children[i], false);
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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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/**
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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: function() {
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return this._getVisibleChildren();
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},
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_animationDone: function() {
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this._animating = false;
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this.emit('animation-done');
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},
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animatePulse: function(animationDirection) {
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if (animationDirection != AnimationDirection.IN)
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throw new Error("Pulse animation only implements 'in' animation direction");
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if (this._animating)
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return;
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this._animating = true;
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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.reactive = false;
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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: Lang.bind(this, function() {
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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: Lang.bind(this, function() {
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if (isLastItem)
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this._animationDone();
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actor.reactive = true;
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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: function(animationDirection, sourceActor) {
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if (this._animating)
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return;
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this._animating = true;
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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(function(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(function(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(function(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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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;
|
|
let [adjustedSourcePositionX, adjustedSourcePositionY] = [sourceCenterX - sourceScaledWidth / 2, sourceCenterY - sourceScaledHeight / 2];
|
|
|
|
let movementParams, fadeParams;
|
|
if (animationDirection == AnimationDirection.IN) {
|
|
let isLastItem = actor._distance == minDist;
|
|
|
|
actorClone.opacity = 0;
|
|
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: Lang.bind(this, function() {
|
|
if (isLastItem)
|
|
this._animationDone();
|
|
|
|
actor.opacity = 255;
|
|
actor.reactive = true;
|
|
actorClone.destroy();
|
|
})};
|
|
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: Lang.bind(this, function() {
|
|
if (isLastItem) {
|
|
this._animationDone();
|
|
this._restoreItemsOpacity();
|
|
}
|
|
actor.reactive = true;
|
|
actorClone.destroy();
|
|
})};
|
|
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);
|
|
}
|
|
},
|
|
|
|
_restoreItemsOpacity: function() {
|
|
for (let index = 0; index < this._items.length; index++) {
|
|
this._items[index].actor.opacity = 255;
|
|
}
|
|
},
|
|
|
|
_getAllocatedChildSizeAndSpacing: function(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: function(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: function(rowWidth) {
|
|
return this._computeLayout(rowWidth)[0];
|
|
},
|
|
|
|
getRowLimit: function() {
|
|
return this._rowLimit;
|
|
},
|
|
|
|
_computeLayout: function (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: function() {
|
|
let themeNode = this.actor.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._grid.queue_relayout();
|
|
},
|
|
|
|
nRows: function(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: function(forHeight) {
|
|
return Math.floor((forHeight - (this.topPadding + this.bottomPadding) + this._getSpacing()) / (this._getVItemSize() + this._getSpacing()));
|
|
},
|
|
|
|
usedHeightForNRows: function(nRows) {
|
|
return (this._getVItemSize() + this._getSpacing()) * nRows - this._getSpacing() + this.topPadding + this.bottomPadding;
|
|
},
|
|
|
|
usedWidth: function(forWidth) {
|
|
return this.usedWidthForNColumns(this.columnsForWidth(forWidth));
|
|
},
|
|
|
|
usedWidthForNColumns: function(columns) {
|
|
let usedWidth = columns * (this._getHItemSize() + this._getSpacing());
|
|
usedWidth -= this._getSpacing();
|
|
return usedWidth + this.leftPadding + this.rightPadding;
|
|
},
|
|
|
|
removeAll: function() {
|
|
this._items = [];
|
|
this._grid.remove_all_children();
|
|
},
|
|
|
|
destroyAll: function() {
|
|
this._items = [];
|
|
this._grid.destroy_all_children();
|
|
},
|
|
|
|
_keyFocusIn: function(actor) {
|
|
this.emit('key-focus-in', actor._associatedItem);
|
|
},
|
|
|
|
addItem: function(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._grid.insert_child_at_index(item.actor, index);
|
|
else
|
|
this._grid.add_actor(item.actor);
|
|
|
|
// Maybe the item actor acts as a container, so ask the item if
|
|
// it has a specific actor to track focus
|
|
let focusReceiver = item.actor;
|
|
if (item.getFocusReceiver)
|
|
focusReceiver = item.getFocusReceiver();
|
|
|
|
focusReceiver._associatedItem = item.actor;
|
|
focusReceiver._iconGridKeyFocusInId = focusReceiver.connect('key-focus-in', Lang.bind(this, this._keyFocusIn));
|
|
},
|
|
|
|
removeItem: function(item) {
|
|
let focusReceiver = item.actor;
|
|
if (item.getFocusReceiver)
|
|
focusReceiver = item.getFocusReceiver();
|
|
|
|
|
|
focusReceiver._associatedItem = null;
|
|
focusReceiver.disconnect(focusReceiver._iconGridKeyFocusInId);
|
|
|
|
this._grid.remove_child(item.actor);
|
|
},
|
|
|
|
getItemAtIndex: function(index) {
|
|
return this._grid.get_child_at_index(index);
|
|
},
|
|
|
|
visibleItemsCount: function() {
|
|
return this._grid.get_n_children() - this._grid.get_n_skip_paint();
|
|
},
|
|
|
|
setSpacing: function(spacing) {
|
|
this._fixedSpacing = spacing;
|
|
},
|
|
|
|
_getSpacing: function() {
|
|
return this._fixedSpacing ? this._fixedSpacing : this._spacing;
|
|
},
|
|
|
|
_getHItemSize: function() {
|
|
return this._fixedHItemSize ? this._fixedHItemSize : this._hItemSize;
|
|
},
|
|
|
|
_getVItemSize: function() {
|
|
return this._fixedVItemSize ? this._fixedVItemSize : this._vItemSize;
|
|
},
|
|
|
|
_updateSpacingForSize: function(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: function(availWidth, availHeight) {
|
|
this._fixedHItemSize = this._hItemSize;
|
|
this._fixedVItemSize = this._vItemSize;
|
|
this._updateSpacingForSize(availWidth, availHeight);
|
|
let spacing = this._getSpacing();
|
|
|
|
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,
|
|
Lang.bind(this, this._updateIconSizes));
|
|
},
|
|
|
|
// Note that this is ICON_SIZE as used by BaseIcon, not elsewhere in IconGrid; it's a bit messed up
|
|
_updateIconSizes: function() {
|
|
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);
|
|
}
|
|
}
|
|
});
|
|
Signals.addSignalMethods(IconGrid.prototype);
|
|
|
|
const PaginatedIconGrid = new Lang.Class({
|
|
Name: 'PaginatedIconGrid',
|
|
Extends: IconGrid,
|
|
|
|
_init: function(params) {
|
|
this.parent(params);
|
|
this._nPages = 0;
|
|
this.currentPage = 0;
|
|
this._rowsPerPage = 0;
|
|
this._spaceBetweenPages = 0;
|
|
this._childrenPerPage = 0;
|
|
},
|
|
|
|
_getPreferredHeight: function (grid, forWidth, alloc) {
|
|
alloc.min_size = (this._availableHeightPerPageForItems() + this.bottomPadding + this.topPadding) * this._nPages + this._spaceBetweenPages * this._nPages;
|
|
alloc.natural_size = (this._availableHeightPerPageForItems() + this.bottomPadding + this.topPadding) * this._nPages + this._spaceBetweenPages * this._nPages;
|
|
},
|
|
|
|
_allocate: function (grid, box, flags) {
|
|
if (this._childrenPerPage == 0)
|
|
log('computePages() must be called before allocate(); pagination will not work.');
|
|
|
|
if (this._fillParent) {
|
|
// Reset the passed in box to fill the parent
|
|
let parentBox = this.actor.get_parent().allocation;
|
|
let gridBox = this.actor.get_theme_node().get_content_box(parentBox);
|
|
box = this._grid.get_theme_node().get_content_box(gridBox);
|
|
}
|
|
let children = this._getVisibleChildren();
|
|
let availWidth = box.x2 - box.x1;
|
|
let availHeight = box.y2 - box.y1;
|
|
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;
|
|
let rowIndex = 0;
|
|
|
|
for (let i = 0; i < children.length; i++) {
|
|
let childBox = this._calculateChildBox(children[i], x, y, box);
|
|
children[i].allocate(childBox, flags);
|
|
this._grid.set_skip_paint(children[i], false);
|
|
|
|
columnIndex++;
|
|
if (columnIndex == nColumns) {
|
|
columnIndex = 0;
|
|
rowIndex++;
|
|
}
|
|
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;
|
|
}
|
|
},
|
|
|
|
// Overriden from IconGrid
|
|
_getChildrenToAnimate: function() {
|
|
let children = this._getVisibleChildren();
|
|
let firstIndex = this._childrenPerPage * this.currentPage;
|
|
let lastIndex = firstIndex + this._childrenPerPage;
|
|
|
|
return children.slice(firstIndex, lastIndex);
|
|
},
|
|
|
|
_computePages: function (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);
|
|
|
|
let spacing = this._getSpacing();
|
|
// 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: function(availWidth, availHeight) {
|
|
this.parent(availWidth, availHeight);
|
|
this._computePages(availWidth, availHeight);
|
|
},
|
|
|
|
_availableHeightPerPageForItems: function() {
|
|
return this.usedHeightForNRows(this._rowsPerPage) - (this.topPadding + this.bottomPadding);
|
|
},
|
|
|
|
nPages: function() {
|
|
return this._nPages;
|
|
},
|
|
|
|
getPageHeight: function() {
|
|
return this._availableHeightPerPageForItems();
|
|
},
|
|
|
|
getPageY: function(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: function(item) {
|
|
let children = this._getVisibleChildren();
|
|
let index = children.indexOf(item);
|
|
if (index == -1) {
|
|
throw new Error('Item not found.');
|
|
return 0;
|
|
}
|
|
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: function(sourceItem, side, nRows) {
|
|
let children = this._getVisibleChildren();
|
|
let index = children.indexOf(sourceItem.actor);
|
|
if (index == -1) {
|
|
throw new Error('Item not found.');
|
|
return;
|
|
}
|
|
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, Gtk.DirectionType.UP, nRowsUp);
|
|
this._translateChildren(childrenDown, Gtk.DirectionType.DOWN, nRowsDown);
|
|
this._translatedChildren = childrenUp.concat(childrenDown);
|
|
}
|
|
},
|
|
|
|
_translateChildren: function(children, direction, nRows) {
|
|
let translationY = nRows * (this._getVItemSize() + this._getSpacing());
|
|
if (translationY == 0)
|
|
return;
|
|
|
|
if (direction == Gtk.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 = Lang.bind(this,
|
|
function() {
|
|
this.emit('space-opened');
|
|
});
|
|
Tweener.addTween(children[i], params);
|
|
}
|
|
},
|
|
|
|
closeExtraSpace: function() {
|
|
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: Lang.bind(this,
|
|
function() {
|
|
this.emit('space-closed');
|
|
})
|
|
});
|
|
}
|
|
}
|
|
});
|
|
Signals.addSignalMethods(PaginatedIconGrid.prototype);
|