480 lines
18 KiB
JavaScript
480 lines
18 KiB
JavaScript
/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
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const Big = imports.gi.Big;
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const Clutter = imports.gi.Clutter;
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const Gio = imports.gi.Gio;
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const Gtk = imports.gi.Gtk;
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const Mainloop = imports.mainloop;
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const Shell = imports.gi.Shell;
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const Signals = imports.signals;
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const Lang = imports.lang;
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const AppDisplay = imports.ui.appDisplay;
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const DocDisplay = imports.ui.docDisplay;
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const GenericDisplay = imports.ui.genericDisplay;
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const Link = imports.ui.link;
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const Main = imports.ui.main;
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const Panel = imports.ui.panel;
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const Dash = imports.ui.dash;
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const Tweener = imports.ui.tweener;
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const Workspaces = imports.ui.workspaces;
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const ROOT_OVERVIEW_COLOR = new Clutter.Color();
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ROOT_OVERVIEW_COLOR.from_pixel(0x000000ff);
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// Time for initial animation going into Overview mode
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const ANIMATION_TIME = 0.25;
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// We divide the screen into a grid of rows and columns, which we use
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// to help us position the Overview components, such as the side panel
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// that lists applications and documents, the workspaces display, and
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// the button for adding additional workspaces.
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// In the regular mode, the side panel takes up one column on the left,
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// and the workspaces display takes up the remaining columns.
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// In the expanded side panel display mode, the side panel takes up two
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// columns, and the workspaces display slides all the way to the right,
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// being visible only in the last quarter of the right-most column.
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// In the future, this mode will have more components, such as a display
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// of documents which were recently opened with a given application, which
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// will take up the remaining sections of the display.
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const WIDE_SCREEN_CUT_OFF_RATIO = 1.4;
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const COLUMNS_REGULAR_SCREEN = 4;
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const ROWS_REGULAR_SCREEN = 8;
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const COLUMNS_WIDE_SCREEN = 5;
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const ROWS_WIDE_SCREEN = 10;
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const DEFAULT_PADDING = 4;
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// Padding around workspace grid / Spacing between Dash and Workspaces
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const WORKSPACE_GRID_PADDING = 12;
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const COLUMNS_FOR_WORKSPACES_REGULAR_SCREEN = 3;
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const ROWS_FOR_WORKSPACES_REGULAR_SCREEN = 6;
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const COLUMNS_FOR_WORKSPACES_WIDE_SCREEN = 4;
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const ROWS_FOR_WORKSPACES_WIDE_SCREEN = 8;
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// A multi-state; PENDING is used during animations
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const STATE_ACTIVE = true;
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const STATE_PENDING_INACTIVE = false;
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const STATE_INACTIVE = false;
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const SHADOW_COLOR = new Clutter.Color();
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SHADOW_COLOR.from_pixel(0x00000033);
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const TRANSPARENT_COLOR = new Clutter.Color();
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TRANSPARENT_COLOR.from_pixel(0x00000000);
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const SHADOW_WIDTH = 6;
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const NUMBER_OF_SECTIONS_IN_SEARCH = 2;
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let wideScreen = false;
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let displayGridColumnWidth = null;
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let displayGridRowHeight = null;
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let addRemoveButtonSize = null;
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function Overview() {
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this._init();
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}
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Overview.prototype = {
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_init : function() {
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let me = this;
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this._group = new Clutter.Group();
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this._group._delegate = this;
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this.visible = false;
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this.animationInProgress = false;
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this._hideInProgress = false;
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this._recalculateGridSizes();
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this._activeDisplayPane = null;
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// Used to catch any clicks when we have an active pane; see the comments
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// in addPane below.
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this._transparentBackground = new Clutter.Rectangle({ opacity: 0,
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reactive: true });
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this._group.add_actor(this._transparentBackground);
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// Background color for the Overview
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this._backOver = new Clutter.Rectangle({ color: ROOT_OVERVIEW_COLOR });
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this._group.add_actor(this._backOver);
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this._group.hide();
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global.overlay_group.add_actor(this._group);
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// TODO - recalculate everything when desktop size changes
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this._dash = new Dash.Dash();
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this._group.add_actor(this._dash.actor);
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// Container to hold popup pane chrome.
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this._paneContainer = new Big.Box({ orientation: Big.BoxOrientation.HORIZONTAL,
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spacing: 6
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});
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// Note here we explicitly don't set the paneContainer to be reactive yet; that's done
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// inside the notify::visible handler on panes.
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this._paneContainer.connect('button-release-event', Lang.bind(this, function(background) {
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this._activeDisplayPane.close();
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return true;
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}));
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this._group.add_actor(this._paneContainer);
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this._transparentBackground.lower_bottom();
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this._paneContainer.lower_bottom();
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this._workspaces = null;
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},
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_recalculateGridSizes: function () {
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wideScreen = (global.screen_width/global.screen_height > WIDE_SCREEN_CUT_OFF_RATIO);
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// We divide the screen into an imaginary grid which helps us determine the layout of
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// different visual components.
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if (wideScreen) {
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displayGridColumnWidth = global.screen_width / COLUMNS_WIDE_SCREEN;
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displayGridRowHeight = global.screen_height / ROWS_WIDE_SCREEN;
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} else {
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displayGridColumnWidth = global.screen_width / COLUMNS_REGULAR_SCREEN;
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displayGridRowHeight = global.screen_height / ROWS_REGULAR_SCREEN;
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}
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},
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relayout: function () {
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let screenHeight = global.screen_height;
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let screenWidth = global.screen_width;
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let contentHeight = screenHeight - Panel.PANEL_HEIGHT;
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let workspaceColumnsUsed = wideScreen ? COLUMNS_FOR_WORKSPACES_WIDE_SCREEN : COLUMNS_FOR_WORKSPACES_REGULAR_SCREEN;
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let workspaceRowsUsed = wideScreen ? ROWS_FOR_WORKSPACES_WIDE_SCREEN : ROWS_FOR_WORKSPACES_REGULAR_SCREEN;
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this._workspacesWidth = displayGridColumnWidth * workspaceColumnsUsed
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- WORKSPACE_GRID_PADDING * 2;
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// We scale the vertical padding by (screenHeight / screenWidth)
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// so that the workspace preserves its aspect ratio.
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this._workspacesHeight = displayGridRowHeight * workspaceRowsUsed
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- WORKSPACE_GRID_PADDING * (screenHeight / screenWidth) * 2;
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this._workspacesX = displayGridColumnWidth + WORKSPACE_GRID_PADDING;
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this._workspacesY = displayGridRowHeight + WORKSPACE_GRID_PADDING * (screenHeight / screenWidth);
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let dashY = Panel.PANEL_HEIGHT;
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this._dash.actor.set_position(0, dashY);
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this._dash.actor.set_size(displayGridColumnWidth, screenHeight - dashY);
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this._dash.searchArea.height = this._workspacesY - dashY;
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this._dash.sectionArea.height = this._workspacesHeight;
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// place the 'Add Workspace' button in the bottom row of the grid
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addRemoveButtonSize = Math.floor(displayGridRowHeight * 3/5);
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this._addButtonX = this._workspacesX + this._workspacesWidth - addRemoveButtonSize;
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this._addButtonY = screenHeight - Math.floor(displayGridRowHeight * 4/5);
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this._backOver.set_position(0, Panel.PANEL_HEIGHT);
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this._backOver.set_size(global.screen_width, contentHeight);
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this._paneContainer.set_position(this._dash.actor.x + this._dash.actor.width + DEFAULT_PADDING,
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Panel.PANEL_HEIGHT);
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// Dynamic width
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this._paneContainer.height = contentHeight;
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this._transparentBackground.set_position(this._paneContainer.x, this._paneContainer.y);
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this._transparentBackground.set_size(global.screen_width - this._paneContainer.x,
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this._paneContainer.height);
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if (this._activeDisplayPane != null)
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this._activeDisplayPane.actor.width = displayGridColumnWidth * 2;
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},
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addPane: function (pane) {
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this._paneContainer.append(pane.actor, Big.BoxPackFlags.NONE);
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// When a pane is displayed, we raise the transparent background to the top
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// and connect to button-release-event on it, then raise the pane above that.
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// The idea here is that clicking anywhere outside the pane should close it.
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// When the active pane is closed, undo the effect.
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let backgroundEventId = null;
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pane.connect('open-state-changed', Lang.bind(this, function (pane, isOpen) {
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if (isOpen) {
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pane.actor.width = displayGridColumnWidth * 2;
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this._activeDisplayPane = pane;
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this._transparentBackground.raise_top();
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this._paneContainer.raise_top();
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if (backgroundEventId != null)
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this._transparentBackground.disconnect(backgroundEventId);
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backgroundEventId = this._transparentBackground.connect('button-release-event', Lang.bind(this, function () {
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this._activeDisplayPane.close();
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return true;
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}));
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} else if (pane == this._activeDisplayPane) {
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this._activeDisplayPane = null;
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if (backgroundEventId != null) {
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this._transparentBackground.disconnect(backgroundEventId);
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backgroundEventId = null;
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}
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this._transparentBackground.lower_bottom();
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this._paneContainer.lower_bottom();
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}
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}));
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},
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//// Draggable target interface ////
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// Closes any active panes if a GenericDisplayItem is being
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// dragged over the Overview, i.e. as soon as it starts being dragged.
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// This allows the user to place the item on any workspace.
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handleDragOver : function(source, actor, x, y, time) {
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if (source instanceof GenericDisplay.GenericDisplayItem
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|| source instanceof AppDisplay.BaseWellItem) {
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if (this._activeDisplayPane != null)
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this._activeDisplayPane.close();
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return true;
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}
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return false;
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},
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//// Public methods ////
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// Returns the scale the Overview has when we just start zooming out
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// to overview mode. That is, when just the active workspace is showing.
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getZoomedInScale : function() {
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return 1 / this._workspaces.getScale();
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},
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// Returns the position the Overview has when we just start zooming out
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// to overview mode. That is, when just the active workspace is showing.
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getZoomedInPosition : function() {
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let [posX, posY] = this._workspaces.getActiveWorkspacePosition();
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let scale = this.getZoomedInScale();
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return [- posX * scale, - posY * scale];
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},
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// Returns the current scale of the Overview.
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getScale : function() {
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return this._group.scaleX;
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},
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// Returns the current position of the Overview.
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getPosition : function() {
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return [this._group.x, this._group.y];
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},
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show : function() {
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if (this.visible)
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return;
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if (!Main.beginModal())
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return;
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this.visible = true;
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this.animationInProgress = true;
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this._dash.show();
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/* TODO: make this stuff dynamic */
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this._workspaces = new Workspaces.Workspaces(this._workspacesWidth, this._workspacesHeight,
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this._workspacesX, this._workspacesY);
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this._group.add_actor(this._workspaces.actor);
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// The workspaces actor is as big as the screen, so we have to raise the dash above it
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// for drag and drop to work. In the future we should fix the workspaces to not
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// be as big as the screen.
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this._dash.actor.raise(this._workspaces.actor);
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// Create (+) button
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this._addButton = new AddWorkspaceButton(addRemoveButtonSize, this._addButtonX, this._addButtonY, Lang.bind(this, this._acceptNewWorkspaceDrop));
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this._addButton.actor.connect('button-release-event', Lang.bind(this, this._addNewWorkspace));
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this._group.add_actor(this._addButton.actor);
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this._addButton.actor.raise(this._workspaces.actor);
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// All the the actors in the window group are completely obscured,
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// hiding the group holding them while the Overview is displayed greatly
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// increases performance of the Overview especially when there are many
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// windows visible.
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//
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// If we switched to displaying the actors in the Overview rather than
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// clones of them, this would obviously no longer be necessary.
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global.window_group.hide();
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this._group.show();
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// Create a zoom out effect. First scale the Overview group up and
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// position it so that the active workspace fills up the whole screen,
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// then transform the group to its normal dimensions and position.
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// The opposite transition is used in hide().
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this._group.scaleX = this._group.scaleY = this.getZoomedInScale();
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[this._group.x, this._group.y] = this.getZoomedInPosition();
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Tweener.addTween(this._group,
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{ x: 0,
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y: 0,
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scaleX: 1,
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scaleY: 1,
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transition: 'easeOutQuad',
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time: ANIMATION_TIME,
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onComplete: this._showDone,
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onCompleteScope: this
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});
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// Make Dash fade in so that it doesn't appear to big.
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this._dash.actor.opacity = 0;
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Tweener.addTween(this._dash.actor,
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{ opacity: 255,
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transition: 'easeOutQuad',
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time: ANIMATION_TIME
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});
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this.emit('showing');
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},
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hide : function() {
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if (!this.visible || this._hideInProgress)
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return;
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this.animationInProgress = true;
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this._hideInProgress = true;
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if (this._activeDisplayPane != null)
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this._activeDisplayPane.close();
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this._workspaces.hide();
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// Create a zoom in effect by transforming the Overview group so that
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// the active workspace fills up the whole screen. The opposite
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// transition is used in show().
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let scale = this.getZoomedInScale();
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let [posX, posY] = this.getZoomedInPosition();
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Tweener.addTween(this._group,
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{ x: posX,
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y: posY,
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scaleX: scale,
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scaleY: scale,
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transition: 'easeOutQuad',
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time: ANIMATION_TIME,
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onComplete: this._hideDone,
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onCompleteScope: this
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});
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// Make Dash fade out so that it doesn't appear to big.
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Tweener.addTween(this._dash.actor,
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{ opacity: 0,
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transition: 'easeOutQuad',
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time: ANIMATION_TIME
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});
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this.emit('hiding');
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},
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toggle: function() {
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if (this.visible)
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this.hide();
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else
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this.show();
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},
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/**
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* activateWindow:
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* @metaWindow: A #MetaWindow
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* @time: Event timestamp integer
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*
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* Make the given MetaWindow be the focus window, switching
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* to the workspace it's on if necessary. This function
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* should only be used when the Overview is currently active;
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* outside of that, use the relevant methods on MetaDisplay.
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*/
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activateWindow: function (metaWindow, time) {
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this._workspaces.activateWindowFromOverview(metaWindow, time);
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this.hide();
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},
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/**
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* setHighlightWindow:
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* @metaWindow: A #MetaWindow
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*
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* Draw the user's attention to the given window @metaWindow.
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*/
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setHighlightWindow: function (metaWindow) {
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if (this._workspaces)
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this._workspaces.setHighlightWindow(metaWindow);
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},
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/**
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* setApplicationWindowSelection:
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* @appid: Application identifier string
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*
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* Enter a mode which shows only the windows owned by the
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* given application, and allow highlighting of a specific
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* window with setHighlightWindow().
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*/
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setApplicationWindowSelection: function (appid) {
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if (this._workspaces)
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this._workspaces.setApplicationWindowSelection(appid);
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},
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//// Private methods ////
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_showDone: function() {
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if (this._hideInProgress)
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return;
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this.animationInProgress = false;
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this.emit('shown');
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},
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_hideDone: function() {
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global.window_group.show();
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this._workspaces.destroy();
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this._workspaces = null;
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this._dash.hide();
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this._group.hide();
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this.visible = false;
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this.animationInProgress = false;
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this._hideInProgress = false;
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Main.endModal();
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this.emit('hidden');
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},
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_addNewWorkspace: function() {
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global.screen.append_new_workspace(false, global.screen.get_display().get_current_time());
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},
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_acceptNewWorkspaceDrop: function(source, dropActor, x, y, time) {
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this._addNewWorkspace();
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return this._workspaces.acceptNewWorkspaceDrop(source, dropActor, x, y, time);
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}
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};
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Signals.addSignalMethods(Overview.prototype);
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function AddWorkspaceButton(buttonSize, buttonX, buttonY, acceptDropCallback) {
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this._init(buttonSize, buttonX, buttonY, acceptDropCallback);
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}
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AddWorkspaceButton.prototype = {
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_init: function(buttonSize, buttonX, buttonY, acceptDropCallback) {
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this.actor = new Clutter.Group({ x: buttonX,
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y: buttonY,
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width: global.screen_width - buttonX,
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height: global.screen_height - buttonY,
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reactive: true });
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this.actor._delegate = this;
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this._acceptDropCallback = acceptDropCallback;
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let plus = new Clutter.Texture({ x: 0,
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y: 0,
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width: buttonSize,
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height: buttonSize });
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plus.set_from_file(global.imagedir + 'add-workspace.svg');
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this.actor.add_actor(plus);
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},
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// Draggable target interface
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acceptDrop: function(source, actor, x, y, time) {
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return this._acceptDropCallback(source, actor, x, y, time);
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}
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};
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