gnome-shell/js/ui/overview.js

587 lines
22 KiB
JavaScript
Raw Normal View History

/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
const Clutter = imports.gi.Clutter;
const Gio = imports.gi.Gio;
const Gtk = imports.gi.Gtk;
const Mainloop = imports.mainloop;
const Shell = imports.gi.Shell;
const Signals = imports.signals;
const Lang = imports.lang;
const St = imports.gi.St;
const Gettext = imports.gettext.domain('gnome-shell');
const _ = Gettext.gettext;
const AppDisplay = imports.ui.appDisplay;
const DocDisplay = imports.ui.docDisplay;
const GenericDisplay = imports.ui.genericDisplay;
const Main = imports.ui.main;
const Panel = imports.ui.panel;
const Dash = imports.ui.dash;
const Tweener = imports.ui.tweener;
const WorkspacesView = imports.ui.workspacesView;
// Time for initial animation going into Overview mode
const ANIMATION_TIME = 0.25;
// We divide the screen into a grid of rows and columns, which we use
// to help us position the Overview components, such as the side panel
// that lists applications and documents, the workspaces display, and
// the button for adding additional workspaces.
// In the regular mode, the side panel takes up one column on the left,
// and the workspaces display takes up the remaining columns.
// In the expanded side panel display mode, the side panel takes up two
// columns, and the workspaces display slides all the way to the right,
// being visible only in the last quarter of the right-most column.
// In the future, this mode will have more components, such as a display
// of documents which were recently opened with a given application, which
// will take up the remaining sections of the display.
const WIDE_SCREEN_CUT_OFF_RATIO = 1.4;
// A common netbook resolution is 1024x600, which trips the widescreen
// ratio. However that leaves way too few pixels for the dash. So
// just treat this as a regular screen.
const WIDE_SCREEN_MINIMUM_HEIGHT = 768;
const COLUMNS_REGULAR_SCREEN = 4;
const ROWS_REGULAR_SCREEN = 8;
const COLUMNS_WIDE_SCREEN = 5;
const ROWS_WIDE_SCREEN = 10;
const DEFAULT_PADDING = 4;
// Padding around workspace grid / Spacing between Dash and Workspaces
const WORKSPACE_GRID_PADDING = 12;
const COLUMNS_FOR_WORKSPACES_REGULAR_SCREEN = 3;
const ROWS_FOR_WORKSPACES_REGULAR_SCREEN = 6;
const COLUMNS_FOR_WORKSPACES_WIDE_SCREEN = 4;
const ROWS_FOR_WORKSPACES_WIDE_SCREEN = 8;
// A multi-state; PENDING is used during animations
const STATE_ACTIVE = true;
const STATE_PENDING_INACTIVE = false;
const STATE_INACTIVE = false;
const SHADOW_COLOR = new Clutter.Color();
SHADOW_COLOR.from_pixel(0x00000033);
const TRANSPARENT_COLOR = new Clutter.Color();
TRANSPARENT_COLOR.from_pixel(0x00000000);
const SHADOW_WIDTH = 6;
const NUMBER_OF_SECTIONS_IN_SEARCH = 2;
const INFO_BAR_HIDE_TIMEOUT = 10;
let wideScreen = false;
let displayGridColumnWidth = null;
let displayGridRowHeight = null;
function InfoBar() {
this._init();
}
InfoBar.prototype = {
_init: function() {
this.actor = new St.Bin({ style_class: 'info-bar-panel',
x_fill: true,
y_fill: false });
this._label = new St.Label();
this._undo = new St.Button({ style_class: 'info-bar-link-button' });
let bin = new St.Bin({ x_fill: false,
y_fill: false,
x_align: St.Align.MIDDLE,
y_align: St.Align.MIDDLE });
this.actor.set_child(bin);
let box = new St.BoxLayout({ style_class: 'info-bar' });
bin.set_child(box);
this._timeoutId = 0;
box.add(this._label, {'y-fill' : false, 'y-align' : St.Align.MIDDLE});
box.add(this._undo);
this.actor.set_opacity(0);
this._undoCallback = null;
this._undo.connect('clicked', Lang.bind(this, this._onUndoClicked));
},
_onUndoClicked: function() {
Mainloop.source_remove(this._timeoutId);
this._timeoutId = 0;
if (this._undoCallback)
this._undoCallback();
this.actor.set_opacity(0);
this._undoCallback = null;
},
_hideDone: function() {
this._undoCallback = null;
},
_hide: function() {
Tweener.addTween(this.actor,
{ opacity: 0,
transition: 'easeOutQuad',
time: ANIMATION_TIME,
onComplete: this._hideDone,
onCompleteScope: this
});
},
_onTimeout: function() {
this._timeoutId = 0;
this._hide();
return false;
},
setMessage: function(text, undoCallback, undoLabel) {
if (this._timeoutId)
Mainloop.source_remove(this._timeoutId);
this._timeout = false;
this._label.text = text;
Tweener.addTween(this.actor,
{ opacity: 255,
transition: 'easeOutQuad',
time: ANIMATION_TIME
});
this._timeoutId = Mainloop.timeout_add_seconds(INFO_BAR_HIDE_TIMEOUT, Lang.bind(this, this._onTimeout));
if (undoLabel)
this._undo.label = undoLabel;
else
this._undo.label = _("Undo");
this._undoCallback = undoCallback;
if (undoCallback)
this._undo.show();
else
this._undo.hide();
}
};
function Overview() {
Bug 577338 – Show item details on click in the expanded view Change the overlay behavior to display more details about an item on single click and launch it on double click. When the item is clicked on in the expanded view, the details are shown in the area on the right that is allocated for showing details. The details pop-up is not shown for the item that was clicked on, but it is shown for other items on hover and for the item that was clicked if the mouse pointer is moved back to it. Both hovering and single clicking results in the details pop-up being shown in the regular view. (Single clicking actually doesn't do anything in the regular view, but the details pop-up is shown due to hovering within the time it takes to perform a single click.) The overlay now uses 3 columns on the wide screen for displaying items in the expanded view. This allows keeping the size of the details area the same for expanded and regular views. Add shell_get_button_event_click_count() to shell-global.[hc] to retrieve the click count for button press and release events. Add selectedItemDetails public variable actor to the generic display to contain the details of the selected item and be shown in the overlay when it is in the expanded view mode. Fix the bug when the sideshow section would loose selection in the expanded view if it did not have any items, and would not regain it if it was repopulated with some items (e.g. when the search string changes). The sideshow no longer takes overlay parent and width as constructor arguments. It is added to the overlay inside the overlay code and manages its own width instead (which is ok, since it is pretty much a private class within overlay). Clean up the way selection is moved when an item is launched in order to have selection on click and activation on double click be implemented in a similar fashion. An unneeded _activatedItem variable in generic display was removed, and the selected item is activated instead when necessary. The flow of processing signals changed so that generic display no longer waits for the selection from a different sideshow section to be removed before selecting an item that was clicked on. This removed the need for doActivate() function.
2009-03-31 14:12:33 -04:00
this._init();
}
Overview.prototype = {
Bug 577338 – Show item details on click in the expanded view Change the overlay behavior to display more details about an item on single click and launch it on double click. When the item is clicked on in the expanded view, the details are shown in the area on the right that is allocated for showing details. The details pop-up is not shown for the item that was clicked on, but it is shown for other items on hover and for the item that was clicked if the mouse pointer is moved back to it. Both hovering and single clicking results in the details pop-up being shown in the regular view. (Single clicking actually doesn't do anything in the regular view, but the details pop-up is shown due to hovering within the time it takes to perform a single click.) The overlay now uses 3 columns on the wide screen for displaying items in the expanded view. This allows keeping the size of the details area the same for expanded and regular views. Add shell_get_button_event_click_count() to shell-global.[hc] to retrieve the click count for button press and release events. Add selectedItemDetails public variable actor to the generic display to contain the details of the selected item and be shown in the overlay when it is in the expanded view mode. Fix the bug when the sideshow section would loose selection in the expanded view if it did not have any items, and would not regain it if it was repopulated with some items (e.g. when the search string changes). The sideshow no longer takes overlay parent and width as constructor arguments. It is added to the overlay inside the overlay code and manages its own width instead (which is ok, since it is pretty much a private class within overlay). Clean up the way selection is moved when an item is launched in order to have selection on click and activation on double click be implemented in a similar fashion. An unneeded _activatedItem variable in generic display was removed, and the selected item is activated instead when necessary. The flow of processing signals changed so that generic display no longer waits for the selection from a different sideshow section to be removed before selecting an item that was clicked on. This removed the need for doActivate() function.
2009-03-31 14:12:33 -04:00
_init : function() {
this._group = new St.Group({ style_class: 'overview' });
this._group._delegate = this;
this.infoBar = new InfoBar();
this._group.add_actor(this.infoBar.actor);
this._workspacesManager = null;
this.visible = false;
this.animationInProgress = false;
this._hideInProgress = false;
this._recalculateGridSizes();
this._activeDisplayPane = null;
// During transitions, we raise this to the top to avoid having the overview
// area be reactive; it causes too many issues such as double clicks on
// Dash elements, or mouseover handlers in the workspaces.
this._coverPane = new Clutter.Rectangle({ opacity: 0,
reactive: true });
this._group.add_actor(this._coverPane);
this._coverPane.connect('event', Lang.bind(this, function (actor, event) { return true; }));
// Similar to the cover pane but used for dialogs ("panes"); see the comments
// in addPane below.
this._transparentBackground = new Clutter.Rectangle({ opacity: 0,
reactive: true });
this._group.add_actor(this._transparentBackground);
// Background color for the Overview
this._backOver = new St.Label();
this._group.add_actor(this._backOver);
this._group.hide();
global.overlay_group.add_actor(this._group);
// TODO - recalculate everything when desktop size changes
this._dash = new Dash.Dash();
this._group.add_actor(this._dash.actor);
// Container to hold popup pane chrome.
this._paneContainer = new St.BoxLayout({ style_class: 'overview-pane' });
// Note here we explicitly don't set the paneContainer to be reactive yet; that's done
// inside the notify::visible handler on panes.
this._paneContainer.connect('button-release-event', Lang.bind(this, function(background) {
this._activeDisplayPane.close();
return true;
}));
this._group.add_actor(this._paneContainer);
this._transparentBackground.lower_bottom();
this._paneContainer.hide();
this._coverPane.lower_bottom();
this.workspaces = null;
},
_onViewChanged: function() {
if (!this.visible)
return;
this.workspaces = this._workspacesManager.workspacesView;
// Show new workspacesView
this._group.add_actor(this.workspaces.actor);
this._workspacesBar.raise(this.workspaces.actor);
this._dash.actor.raise(this.workspaces.actor);
},
_recalculateGridSizes: function () {
let primary = global.get_primary_monitor();
wideScreen = (primary.width/primary.height > WIDE_SCREEN_CUT_OFF_RATIO) &&
(primary.height >= WIDE_SCREEN_MINIMUM_HEIGHT);
// We divide the screen into an imaginary grid which helps us determine the layout of
// different visual components.
if (wideScreen) {
displayGridColumnWidth = Math.floor(primary.width / COLUMNS_WIDE_SCREEN);
displayGridRowHeight = Math.floor(primary.height / ROWS_WIDE_SCREEN);
} else {
displayGridColumnWidth = Math.floor(primary.width / COLUMNS_REGULAR_SCREEN);
displayGridRowHeight = Math.floor(primary.height / ROWS_REGULAR_SCREEN);
}
},
relayout: function () {
let primary = global.get_primary_monitor();
let rtl = (St.Widget.get_default_direction () == St.TextDirection.RTL);
this._recalculateGridSizes();
this._group.set_position(primary.x, primary.y);
this._group.set_size(primary.width, primary.height);
let contentY = Panel.PANEL_HEIGHT;
let contentHeight = primary.height - contentY;
this._coverPane.set_position(0, contentY);
this._coverPane.set_size(primary.width, contentHeight);
let workspaceColumnsUsed = wideScreen ? COLUMNS_FOR_WORKSPACES_WIDE_SCREEN : COLUMNS_FOR_WORKSPACES_REGULAR_SCREEN;
let workspaceRowsUsed = wideScreen ? ROWS_FOR_WORKSPACES_WIDE_SCREEN : ROWS_FOR_WORKSPACES_REGULAR_SCREEN;
this._workspacesWidth = displayGridColumnWidth * workspaceColumnsUsed
- WORKSPACE_GRID_PADDING * 2;
// We scale the vertical padding by (primary.height / primary.width)
// so that the workspace preserves its aspect ratio.
this._workspacesHeight = Math.floor(displayGridRowHeight * workspaceRowsUsed
- WORKSPACE_GRID_PADDING * (primary.height / primary.width) * 2);
if (rtl) {
this._workspacesX = WORKSPACE_GRID_PADDING;
} else {
this._workspacesX = displayGridColumnWidth + WORKSPACE_GRID_PADDING;
}
this._workspacesY = Math.floor(displayGridRowHeight + WORKSPACE_GRID_PADDING * (primary.height / primary.width));
if (rtl) {
this._dash.actor.set_position(primary.width - displayGridColumnWidth, contentY);
} else {
this._dash.actor.set_position(0, contentY);
}
this._dash.actor.set_size(displayGridColumnWidth, contentHeight);
this._dash.searchArea.height = this._workspacesY - contentY;
this._dash.sectionArea.height = this._workspacesHeight;
this._dash.searchResults.actor.height = this._workspacesHeight;
this.infoBar.actor.set_position(displayGridColumnWidth, Panel.PANEL_HEIGHT);
this.infoBar.actor.set_size(primary.width - displayGridColumnWidth, this._workspacesY - Panel.PANEL_HEIGHT);
this.infoBar.actor.raise_top();
// place the 'Add Workspace' button in the bottom row of the grid
this._workspacesBarX = this._workspacesX;
this._workspacesBarWidth = this._workspacesWidth;
this._workspacesBarY = primary.height - displayGridRowHeight;
// The parent (this._group) is positioned at the top left of the primary monitor
// while this._backOver occupies the entire screen.
this._backOver.set_position(- primary.x, - primary.y);
this._backOver.set_size(global.screen_width, global.screen_height);
this._paneContainer.set_position(this._dash.actor.x + this._dash.actor.width + DEFAULT_PADDING,
this._workspacesY);
// Dynamic width
this._paneContainer.height = this._workspacesHeight;
if (rtl) {
this._paneContainer.connect('notify::width', Lang.bind(this, function (paneContainer) {
paneContainer.x = this._dash.actor.x - (DEFAULT_PADDING + paneContainer.width);
}));
}
this._transparentBackground.set_position(primary.x, primary.y);
this._transparentBackground.set_size(primary.width, primary.height);
},
addPane: function (pane, align) {
pane.actor.height = .9 * this._workspacesHeight;
this._paneContainer.add(pane.actor, { expand: true,
y_fill: false,
y_align: align });
// When a pane is displayed, we raise the transparent background to the top
// and connect to button-release-event on it, then raise the pane above that.
// The idea here is that clicking anywhere outside the pane should close it.
// When the active pane is closed, undo the effect.
let backgroundEventId = null;
pane.connect('open-state-changed', Lang.bind(this, function (pane, isOpen) {
if (isOpen) {
this._activeDisplayPane = pane;
this._transparentBackground.raise_top();
this._paneContainer.raise_top();
this._paneContainer.show();
this._paneReady = false;
if (backgroundEventId != null)
this._transparentBackground.disconnect(backgroundEventId);
backgroundEventId = this._transparentBackground.connect('captured-event', Lang.bind(this, function (actor, event) {
if (event.get_source() != this._transparentBackground)
return false;
if (event.type() == Clutter.EventType.BUTTON_PRESS)
this._paneReady = true;
if (event.type() == Clutter.EventType.BUTTON_RELEASE
&& this._paneReady)
this._activeDisplayPane.close();
return true;
}));
this.workspaces.actor.opacity = 64;
} else if (pane == this._activeDisplayPane) {
this._activeDisplayPane = null;
if (backgroundEventId != null) {
this._transparentBackground.disconnect(backgroundEventId);
backgroundEventId = null;
}
this._transparentBackground.lower_bottom();
this._paneContainer.hide();
this.workspaces.actor.opacity = 255;
}
}));
},
//// Public methods ////
beginItemDrag: function(source) {
// Close any active panes if @source is a GenericDisplayItem.
// This allows the user to place the item on any workspace.
if (source instanceof GenericDisplay.GenericDisplayItem)
if (this._activeDisplayPane != null)
this._activeDisplayPane.close();
this.emit('item-drag-begin');
},
endItemDrag: function(source) {
this.emit('item-drag-end');
},
// Returns the scale the Overview has when we just start zooming out
// to overview mode. That is, when just the active workspace is showing.
getZoomedInScale : function() {
return 1 / this.workspaces.getScale();
},
// Returns the position the Overview has when we just start zooming out
// to overview mode. That is, when just the active workspace is showing.
getZoomedInPosition : function() {
let [posX, posY] = this.workspaces.getActiveWorkspacePosition();
let scale = this.getZoomedInScale();
return [- posX * scale, - posY * scale];
},
// Returns the current scale of the Overview.
getScale : function() {
return this._group.scaleX;
},
// Returns the current position of the Overview.
getPosition : function() {
return [this._group.x, this._group.y];
},
show : function() {
if (this.visible)
return;
if (!Main.pushModal(this._dash.actor))
return;
this.visible = true;
this.animationInProgress = true;
this._dash.show();
/* TODO: make this stuff dynamic */
this._workspacesManager =
new WorkspacesView.WorkspacesManager(this._workspacesWidth,
this._workspacesHeight,
this._workspacesX,
this._workspacesY);
this._workspacesManager.connect('view-changed',
Lang.bind(this, this._onViewChanged));
this.workspaces = this._workspacesManager.workspacesView;
this._group.add_actor(this.workspaces.actor);
// The workspaces actor is as big as the screen, so we have to raise the dash above it
// for drag and drop to work. In the future we should fix the workspaces to not
// be as big as the screen.
this._dash.actor.raise(this.workspaces.actor);
this._workspacesBar = this._workspacesManager.controlsBar.actor;
this._workspacesBar.set_position(this._workspacesBarX,
this._workspacesBarY);
this._workspacesBar.width = this._workspacesBarWidth;
this._group.add_actor(this._workspacesBar);
this._workspacesBar.raise(this.workspaces.actor);
// All the the actors in the window group are completely obscured,
// hiding the group holding them while the Overview is displayed greatly
// increases performance of the Overview especially when there are many
// windows visible.
//
// If we switched to displaying the actors in the Overview rather than
// clones of them, this would obviously no longer be necessary.
global.window_group.hide();
this._group.show();
// Create a zoom out effect. First scale the Overview group up and
// position it so that the active workspace fills up the whole screen,
// then transform the group to its normal dimensions and position.
// The opposite transition is used in hide().
this._group.scaleX = this._group.scaleY = this.getZoomedInScale();
[this._group.x, this._group.y] = this.getZoomedInPosition();
let primary = global.get_primary_monitor();
Tweener.addTween(this._group,
{ x: primary.x,
y: primary.y,
scaleX: 1,
scaleY: 1,
transition: 'easeOutQuad',
time: ANIMATION_TIME,
onComplete: this._showDone,
onCompleteScope: this
});
// Make Dash fade in so that it doesn't appear too big.
this._dash.actor.opacity = 0;
Tweener.addTween(this._dash.actor,
{ opacity: 255,
transition: 'easeOutQuad',
time: ANIMATION_TIME
});
this._coverPane.raise_top();
this.emit('showing');
},
hide: function() {
if (!this.visible || this._hideInProgress)
return;
this.animationInProgress = true;
this._hideInProgress = true;
if (this._activeDisplayPane != null)
this._activeDisplayPane.close();
this.workspaces.hide();
// Create a zoom in effect by transforming the Overview group so that
// the active workspace fills up the whole screen. The opposite
// transition is used in show().
let scale = this.getZoomedInScale();
let [posX, posY] = this.getZoomedInPosition();
Tweener.addTween(this._group,
{ x: posX,
y: posY,
scaleX: scale,
scaleY: scale,
transition: 'easeOutQuad',
time: ANIMATION_TIME,
onComplete: this._hideDone,
onCompleteScope: this
});
// Make Dash fade out so that it doesn't appear to big.
Tweener.addTween(this._dash.actor,
{ opacity: 0,
transition: 'easeOutQuad',
time: ANIMATION_TIME
});
this._coverPane.raise_top();
this.emit('hiding');
},
toggle: function() {
if (this.visible)
this.hide();
else
this.show();
},
/**
* getWorkspacesForWindow:
* @metaWindow: A #MetaWindow
*
* Returns the Workspaces object associated with the given window.
* This method is not be accessible if the overview is not open
* and will return %null.
*/
getWorkspacesForWindow: function(metaWindow) {
return this.workspaces;
},
//// Private methods ////
_showDone: function() {
if (this._hideInProgress)
return;
this.animationInProgress = false;
this._coverPane.lower_bottom();
this.emit('shown');
},
_hideDone: function() {
global.window_group.show();
this.workspaces.destroy();
this.workspaces = null;
this._workspacesBar.destroy();
this._workspacesBar = null;
this._workspacesManager = null;
this._dash.hide();
this._group.hide();
this.visible = false;
this.animationInProgress = false;
this._hideInProgress = false;
this._coverPane.lower_bottom();
Main.popModal(this._dash.actor);
this.emit('hidden');
}
};
Signals.addSignalMethods(Overview.prototype);