gnome-shell/js/ui/workspacesView.js
Maxim Ermilov 49a9335f68 fix sizing of all-workspace windows in the overview
Window can have more then one clones on different workspaces.
https://bugzilla.gnome.org/show_bug.cgi?id=603078
2010-02-19 21:29:35 +03:00

1030 lines
37 KiB
JavaScript

/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
const Big = imports.gi.Big;
const Clutter = imports.gi.Clutter;
const GdkPixbuf = imports.gi.GdkPixbuf;
const Gdk = imports.gi.Gdk;
const Gtk = imports.gi.Gtk;
const Lang = imports.lang;
const Mainloop = imports.mainloop;
const Meta = imports.gi.Meta;
const Pango = imports.gi.Pango;
const Shell = imports.gi.Shell;
const St = imports.gi.St;
const Signals = imports.signals;
const DND = imports.ui.dnd;
const Lightbox = imports.ui.lightbox;
const Main = imports.ui.main;
const Overview = imports.ui.overview;
const Panel = imports.ui.panel;
const Tweener = imports.ui.tweener;
const Workspace = imports.ui.workspace;
const WORKSPACE_SWITCH_TIME = 0.25;
// Note that mutter has a compile-time limit of 36
const MAX_WORKSPACES = 16;
const WorkspacesViewType = {
SINGLE: 0,
MOSAIC: 1
};
function GenericWorkspacesView(width, height, x, y, animate) {
this._init(width, height, x, y, animate);
}
GenericWorkspacesView.prototype = {
_init: function(width, height, x, y, animate) {
this.actor = new St.Bin({ style_class: "workspaces" });
this._actor = new Clutter.Group();
this.actor.connect('destroy', Lang.bind(this, this._onDestroy));
this.actor.add_actor(this._actor);
this.actor.connect('style-changed', Lang.bind(this,
function() {
let node = this.actor.get_theme_node();
let [a, spacing] = node.get_length('spacing', false);
this._spacing = spacing;
this._positionWorkspaces();
}));
this._width = width;
this._height = height;
this._x = x;
this._y = y;
this._spacing = 0;
this._windowSelectionAppId = null;
this._workspaces = [];
this._highlightWindow = null;
let activeWorkspaceIndex = global.screen.get_active_workspace_index();
// Create and position workspace objects
for (let w = 0; w < global.screen.n_workspaces; w++) {
this._addWorkspaceActor(w);
}
this._workspaces[activeWorkspaceIndex].actor.raise_top();
// Position/scale the desktop windows and their children after the
// workspaces have been created. This cannot be done first because
// window movement depends on the Workspaces object being accessible
// as an Overview member.
this._overviewShowingId =
Main.overview.connect('showing',
Lang.bind(this, function() {
this._onRestacked();
for (let w = 0; w < this._workspaces.length; w++)
this._workspaces[w].zoomToOverview(animate);
}));
// Track changes to the number of workspaces
this._nWorkspacesNotifyId =
global.screen.connect('notify::n-workspaces',
Lang.bind(this, this._workspacesChanged));
this._switchWorkspaceNotifyId =
global.window_manager.connect('switch-workspace',
Lang.bind(this, this._activeWorkspaceChanged));
this._restackedNotifyId =
global.screen.connect('restacked',
Lang.bind(this, this._onRestacked));
},
_lookupWorkspaceForMetaWindow: function (metaWindow) {
for (let i = 0; i < this._workspaces.length; i++) {
if (this._workspaces[i].containsMetaWindow(metaWindow))
return this._workspaces[i];
}
return null;
},
_lookupCloneForMetaWindow: function (metaWindow) {
for (let i = 0; i < this._workspaces.length; i++) {
let clone = this._workspaces[i].lookupCloneForMetaWindow(metaWindow);
if (clone)
return clone;
}
return null;
},
setHighlightWindow: function (metaWindow) {
// Looping over all workspaces is easier than keeping track of the last
// highlighted window while trying to handle the window or workspace possibly
// going away.
for (let i = 0; i < this._workspaces.length; i++) {
this._workspaces[i].setHighlightWindow(null);
}
if (metaWindow != null) {
let workspace = this._lookupWorkspaceForMetaWindow(metaWindow);
workspace.setHighlightWindow(metaWindow);
}
},
_clearApplicationWindowSelection: function(reposition) {
if (this._windowSelectionAppId == null)
return;
this._windowSelectionAppId = null;
for (let i = 0; i < this._workspaces.length; i++) {
this._workspaces[i].setLightboxMode(false);
this._workspaces[i].setShowOnlyWindows(null, reposition);
}
},
/**
* setApplicationWindowSelection:
* @appid: Application identifier string
*
* Enter a mode which shows only the windows owned by the
* given application, and allow highlighting of a specific
* window with setHighlightWindow().
*/
setApplicationWindowSelection: function (appId) {
if (appId == null) {
this._clearApplicationWindowSelection(true);
return;
}
if (appId == this._windowSelectionAppId)
return;
this._windowSelectionAppId = appId;
let appSys = Shell.AppSystem.get_default();
let showOnlyWindows = {};
let app = appSys.get_app(appId);
let windows = app.get_windows();
for (let i = 0; i < windows.length; i++) {
showOnlyWindows[windows[i]] = 1;
}
for (let i = 0; i < this._workspaces.length; i++) {
this._workspaces[i].setLightboxMode(true);
this._workspaces[i].setShowOnlyWindows(showOnlyWindows, true);
}
},
hide: function() {
let activeWorkspaceIndex = global.screen.get_active_workspace_index();
let activeWorkspace = this._workspaces[activeWorkspaceIndex];
if (this._windowSelectionAppId != null)
this._clearApplicationWindowSelection(false);
activeWorkspace.actor.raise_top();
for (let w = 0; w < this._workspaces.length; w++)
this._workspaces[w].zoomFromOverview();
},
destroy: function() {
this.actor.destroy();
},
_onDestroy: function() {
for (let w = 0; w < this._workspaces.length; w++)
this._workspaces[w].destroy();
this._workspaces = [];
Main.overview.disconnect(this._overviewShowingId);
global.screen.disconnect(this._nWorkspacesNotifyId);
global.window_manager.disconnect(this._switchWorkspaceNotifyId);
global.screen.disconnect(this._restackedNotifyId);
},
getScale: function() {
return this._workspaces[0].scale;
},
_onRestacked: function() {
let stack = global.get_windows();
let stackIndices = {};
for (let i = 0; i < stack.length; i++) {
// Use the stable sequence for an integer to use as a hash key
stackIndices[stack[i].get_meta_window().get_stable_sequence()] = i;
}
for (let i = 0; i < this._workspaces.length; i++)
this._workspaces[i].syncStacking(stackIndices);
},
// Handles a drop onto the (+) button; assumes the new workspace
// has already been added
acceptNewWorkspaceDrop: function(source, dropActor, x, y, time) {
return this._workspaces[this._workspaces.length - 1].acceptDrop(source, dropActor, x, y, time);
},
// Get the grid position of the active workspace.
getActiveWorkspacePosition: function() {
let activeWorkspaceIndex = global.screen.get_active_workspace_index();
let activeWorkspace = this._workspaces[activeWorkspaceIndex];
return [activeWorkspace.gridX, activeWorkspace.gridY];
},
_setButtonSensitivity: function(button, sensitive) {
if (button == null)
return;
if (sensitive && !button.reactive) {
button.reactive = true;
button.opacity = 255;
} else if (!sensitive && button.reactive) {
button.reactive = false;
button.opacity = 85;
}
},
createControllerBar: function() {
throw new Error("Not implemented");
},
_positionWorkspaces: function() {
throw new Error("Not implemented");
},
_workspacesChanged: function() {
throw new Error("Not implemented");
},
_activeWorkspaceChanged: function() {
throw new Error("Not implemented");
},
_addWorkspaceActor: function() {
throw new Error("Not implemented");
}
}
function MosaicView(width, height, x, y, animate) {
this._init(width, height, x, y, animate);
}
MosaicView.prototype = {
__proto__: GenericWorkspacesView.prototype,
_init: function(width, height, x, y, animate) {
GenericWorkspacesView.prototype._init.call(this, width, height, x, y, animate);
this.actor.style_class = "workspaces mosaic";
this._workspaces[global.screen.get_active_workspace_index()].setSelected(true);
this._removeButton = null;
this._addButton = null;
},
// Assign grid positions to workspaces. We can't just do a simple
// row-major or column-major numbering, because we don't want the
// existing workspaces to get rearranged when we add a row or
// column. So we alternate between adding to rows and adding to
// columns. (So, eg, when going from a 2x2 grid of 4 workspaces to
// a 3x2 grid of 5 workspaces, the 4 existing workspaces stay
// where they are, and the 5th one is added to the end of the
// first row.)
//
// FIXME: need to make the metacity internal layout agree with this!
_positionWorkspaces: function() {
let gridWidth = Math.ceil(Math.sqrt(this._workspaces.length));
let gridHeight = Math.ceil(this._workspaces.length / gridWidth);
let wsWidth = (this._width - (gridWidth - 1) * this._spacing) / gridWidth;
let wsHeight = (this._height - (gridHeight - 1) * this._spacing) / gridHeight;
let scale = wsWidth / global.screen_width;
let span = 1, n = 0, row = 0, col = 0, horiz = true;
for (let w = 0; w < this._workspaces.length; w++) {
let workspace = this._workspaces[w];
workspace.gridRow = row;
workspace.gridCol = col;
workspace.gridX = this._x + workspace.gridCol * (wsWidth + this._spacing);
workspace.gridY = this._y + workspace.gridRow * (wsHeight + this._spacing);
workspace.scale = scale;
if (horiz) {
col++;
if (col == span) {
row = 0;
horiz = false;
}
} else {
row++;
if (row == span) {
col = 0;
horiz = true;
span++;
}
}
}
},
_workspacesChanged: function() {
let oldNumWorkspaces = this._workspaces.length;
let newNumWorkspaces = global.screen.n_workspaces;
if (oldNumWorkspaces == newNumWorkspaces)
return;
let oldScale = this._workspaces[0].scale;
let oldGridWidth = Math.ceil(Math.sqrt(oldNumWorkspaces));
let oldGridHeight = Math.ceil(oldNumWorkspaces / oldGridWidth);
let lostWorkspaces = [];
if (newNumWorkspaces > oldNumWorkspaces) {
// Create new workspace groups
for (let w = oldNumWorkspaces; w < newNumWorkspaces; w++) {
this._addWorkspaceActor(w);
}
} else {
// Truncate the list of workspaces
// FIXME: assumes that the workspaces are being removed from
// the end of the list, not the start/middle
lostWorkspaces = this._workspaces.splice(newNumWorkspaces);
}
// Figure out the new layout
this._positionWorkspaces();
let newScale = this._workspaces[0].scale;
let newGridWidth = Math.ceil(Math.sqrt(newNumWorkspaces));
let newGridHeight = Math.ceil(newNumWorkspaces / newGridWidth);
if (newGridWidth != oldGridWidth || newGridHeight != oldGridHeight) {
// We need to resize/move the existing workspaces/windows
let existingWorkspaces = Math.min(oldNumWorkspaces, newNumWorkspaces);
for (let w = 0; w < existingWorkspaces; w++)
this._workspaces[w].resizeToGrid(oldScale);
}
if (newScale != oldScale) {
// The workspace scale affects window size/positioning because we clamp
// window size to a 1:1 ratio and never scale them up
let existingWorkspaces = Math.min(oldNumWorkspaces, newNumWorkspaces);
for (let w = 0; w < existingWorkspaces; w++)
this._workspaces[w].positionWindows(Workspace.WindowPositionFlags.ANIMATE);
}
if (newNumWorkspaces > oldNumWorkspaces) {
// Slide new workspaces in from offscreen
// New workspaces can contain windows.
for (let w = oldNumWorkspaces; w < newNumWorkspaces; w++) {
this._workspaces[w].positionWindows(0);
this._workspaces[w].slideIn(oldScale);
}
} else {
// Slide old workspaces out
for (let w = 0; w < lostWorkspaces.length; w++) {
let workspace = lostWorkspaces[w];
workspace.slideOut(function () { workspace.destroy(); });
}
// FIXME: deal with windows on the lost workspaces
}
// Reset the selection state; if we went from > 1 workspace to 1,
// this has the side effect of removing the frame border
let activeIndex = global.screen.get_active_workspace_index();
this._workspaces[activeIndex].setSelected(true);
this._updateButtonsVisibility();
},
_activeWorkspaceChanged: function(wm, from, to, direction) {
this._workspaces[from].setSelected(false);
this._workspaces[to].setSelected(true);
},
_addWorkspaceActor: function(workspaceNum) {
let workspace = new Workspace.Workspace(workspaceNum, this._actor);
this._workspaces[workspaceNum] = workspace;
this._actor.add_actor(workspace.actor);
},
createControllerBar: function() {
let actor = new St.BoxLayout({ 'pack-start': true });
let bin = new St.Bin();
let addButton = new St.Button({ style_class: "workspace-controls add" });
this._addButton = addButton;
addButton.connect('clicked', Lang.bind(this, this._addNewWorkspace));
addButton._delegate = addButton;
addButton._delegate.acceptDrop = Lang.bind(this, function(source, actor, x, y, time) {
return this._acceptNewWorkspaceDrop(source, actor, x, y, time);
});
actor.add(bin, { x_align: St.Align.END });
bin.set_child(addButton);
bin.set_alignment(St.Align.END, St.Align.START);
bin = new St.Bin();
let removeButton = new St.Button({ style_class: "workspace-controls remove" });
this._removeButton = removeButton;
removeButton.connect('clicked', Lang.bind(this, function() {
if (this._workspaces.length <= 1)
return;
global.screen.remove_workspace(this._workspaces[this._workspaces.length - 1]._metaWorkspace, global.get_current_time());
}));
actor.add(bin, { expand: true, x_fill: true, x_align: St.Align.END });
this._updateButtonsVisibility();
bin.set_child(removeButton);
bin.set_alignment(St.Align.END, St.Align.START);
return actor;
},
_updateButtonsVisibility: function() {
let canRemove = (global.screen.n_workspaces > 1);
let canAdd = (global.screen.n_workspaces < MAX_WORKSPACES);
this._setButtonSensitivity(this._removeButton, canRemove);
this._setButtonSensitivity(this._addButton, canAdd);
},
_addNewWorkspace: function() {
global.screen.append_new_workspace(false, global.get_current_time());
},
_acceptNewWorkspaceDrop: function(source, dropActor, x, y, time) {
this._addNewWorkspace();
return this.acceptNewWorkspaceDrop(source, dropActor, x, y, time);
}
};
function SingleView(width, height, x, y, animate) {
this._init(width, height, x, y, animate);
}
SingleView.prototype = {
__proto__: GenericWorkspacesView.prototype,
_init: function(width, height, x, y, animate) {
GenericWorkspacesView.prototype._init.call(this, width, height, x, y, animate);
this.actor.style_class = "workspaces single";
this._actor.set_clip(x, y, width, height);
this._addButton = null;
this._removeButton = null;
this._indicatorsPanel = null;
this._indicatorsPanelWidth = null;
this._scroll = null;
this._lostWorkspaces = [];
this._scrolling = false;
this._animatingScroll = false;
},
_positionWorkspaces: function() {
let scale = this._width / global.screen_width;
let active = global.screen.get_active_workspace_index();
for (let w = 0; w < this._workspaces.length; w++) {
let workspace = this._workspaces[w];
workspace.gridRow = 0;
workspace.gridCol = 0;
workspace.scale = scale;
let _width = workspace.actor.width * scale;
workspace.gridX = this._x + (w - active) * (_width + this._spacing);
workspace.gridY = this._y;
workspace.setSelected(false);
}
},
_updateWorkspaceActors: function() {
for (let w = 0; w < this._workspaces.length; w++) {
let workspace = this._workspaces[w];
workspace.actor.set_scale(workspace.scale, workspace.scale);
workspace.actor.set_position(workspace.gridX, workspace.gridY);
workspace.positionWindows(0);
}
},
_scrollToActive: function(showAnimation) {
let active = global.screen.get_active_workspace_index();
this._scrollWorkspacesToIndex(active, showAnimation);
this._scrollScrollBarToIndex(active, showAnimation);
},
_scrollWorkspacesToIndex: function(index, showAnimation) {
let active = global.screen.get_active_workspace_index();
let targetWorkspaceNewX = this._x;
let targetWorkspaceCurrentX = this._workspaces[index].gridX;
let dx = targetWorkspaceNewX - targetWorkspaceCurrentX;
for (let w = 0; w < this._workspaces.length; w++) {
let workspace = this._workspaces[w];
workspace.gridX += dx;
workspace.actor.show();
workspace._hideAllOverlays();
let visible = (w == active);
if (showAnimation) {
Tweener.addTween(workspace.actor,
{ x: workspace.gridX,
time: WORKSPACE_SWITCH_TIME,
transition: 'easeOutQuad',
onComplete: function() {
if (visible)
workspace._fadeInAllOverlays();
else
workspace.actor.hide();
}});
} else {
workspace.actor.x = workspace.gridX;
if (visible)
workspace._fadeInAllOverlays();
else
workspace.actor.hide();
}
}
for (let l = 0; l < this._lostWorkspaces.length; l++) {
let workspace = this._lostWorkspaces[l];
workspace.gridX += dx;
workspace.actor.show();
workspace._hideAllOverlays();
if (showAnimation) {
Tweener.addTween(workspace.actor,
{ x: workspace.gridX,
time: WORKSPACE_SWITCH_TIME,
transition: 'easeOutQuad',
onComplete: Lang.bind(this, this._cleanWorkspaces)
});
} else {
this._cleanWorkspaces();
}
}
},
_cleanWorkspaces: function() {
if (this._lostWorkspaces.length == 0)
return;
for (let l = 0; l < this._lostWorkspaces.length; l++)
this._lostWorkspaces[l].destroy();
this._lostWorkspaces = [];
this._positionWorkspaces();
this._updateWorkspaceActors();
},
_scrollScrollBarToIndex: function(index, showAnimation) {
if (!this._scroll || this._scrolling)
return;
this._animatingScroll = true;
if (showAnimation) {
Tweener.addTween(this._scroll.adjustment, {
value: index,
time: WORKSPACE_SWITCH_TIME,
transition: 'easeOutQuad',
onComplete: Lang.bind(this,
function() {
this._animatingScroll = false;
})
});
} else {
this._scroll.adjustment.value = index;
this._animatingScroll = false;
}
},
_workspacesChanged: function() {
let oldNumWorkspaces = this._workspaces.length;
let newNumWorkspaces = global.screen.n_workspaces;
let active = global.screen.get_active_workspace_index();
if (oldNumWorkspaces == newNumWorkspaces)
return;
if (this._scroll != null)
this._scroll.adjustment.upper = newNumWorkspaces;
if (newNumWorkspaces > oldNumWorkspaces) {
// Create new workspace groups
for (let w = oldNumWorkspaces; w < newNumWorkspaces; w++)
this._addWorkspaceActor(w);
this._positionWorkspaces();
this._updateWorkspaceActors();
this._scrollScrollBarToIndex(active + 1, false);
} else {
let active = global.screen.get_active_workspace_index();
let removedNum = oldNumWorkspaces - newNumWorkspaces;
let removedIndex = active + 1;
this._lostWorkspaces = this._workspaces.splice(removedIndex,
removedNum);
// Don't let the user try to select this workspace as it's
// making its exit.
for (let l = 0; l < this._lostWorkspaces.length; l++)
this._lostWorkspaces[l]._desktop.actor.reactive = false;
// reassign workspaceNum and metaWorkspace, as lost workspaces
// have not necessarily been removed from the end
for (let i = removedIndex; i < this._workspaces.length; i++) {
let metaWorkspace = global.screen.get_workspace_by_index(i);
this._workspaces[i].workspaceNum = i;
this._workspaces[i]._metaWorkspace = metaWorkspace;
}
this._scrollScrollBarToIndex(active, false);
this._scrollToActive(true);
}
this._updatePanelVisibility();
},
_activeWorkspaceChanged: function(wm, from, to, direction) {
this._updatePanelVisibility();
if (this._scrolling)
return;
this._scrollToActive(true);
},
_addWorkspaceActor: function(workspaceNum) {
let workspace = new Workspace.Workspace(workspaceNum, this._actor);
this._actor.add_actor(workspace.actor);
this._workspaces[workspaceNum] = workspace;
},
// handle changes to the scroll bar's adjustment:
// sync the workspaces' positions to the position of the scroll bar handle
// and change the active workspace if appropriate
_onScroll: function(adj) {
if (this._animatingScroll)
return;
let active = global.screen.get_active_workspace_index();
let current = Math.round(adj.value);
if (active != current) {
let metaWorkspace = this._workspaces[current]._metaWorkspace;
if (!this._scrolling) {
// This here is a little tricky - we get here when StScrollBar
// animates paging; we switch the active workspace, but
// leave out any extra animation (just like we would do when
// the handle was dragged)
// If StScrollBar emitted scroll-start before and scroll-stop
// after the animation, this would not be necessary
this._scrolling = true;
metaWorkspace.activate(global.get_current_time());
this._scrolling = false;
} else {
metaWorkspace.activate(global.get_current_time());
}
}
let last = this._workspaces.length - 1;
let firstWorkspaceX = this._workspaces[0].actor.x;
let lastWorkspaceX = this._workspaces[last].actor.x;
let workspacesWidth = lastWorkspaceX - firstWorkspaceX;
// The scrollbar is hidden when there is only one workspace, so
// adj.upper should at least be 2 - but better be safe than sorry
if (adj.upper == 1)
return;
let currentX = firstWorkspaceX;
let newX = this._x - adj.value / (adj.upper - 1) * workspacesWidth;
let dx = newX - currentX;
for (let i = 0; i < this._workspaces.length; i++) {
this._workspaces[i]._hideAllOverlays();
if (Math.abs(i - adj.value) <= 1)
this._workspaces[i].actor.show();
else
this._workspaces[i].actor.hide();
this._workspaces[i].actor.x += dx;
}
if (!this._scrolling && active == adj.value) {
// Again, work around the paging in StScrollBar: simulate
// the effect of scroll-stop
this._scrolling = true;
this._scrollToActive(false);
this._scrolling = false;
}
},
// handle scroll wheel events:
// activate the next or previous workspace and let the signal handler
// manage the animation
_onScrollEvent: function(actor, event) {
let direction = event.get_scroll_direction();
let current = global.screen.get_active_workspace_index();
let last = global.screen.n_workspaces - 1;
let activate = current;
if (direction == Clutter.ScrollDirection.DOWN && current < last)
activate++;
else if (direction == Clutter.ScrollDirection.UP && current > 0)
activate--;
if (activate != current) {
let metaWorkspace = this._workspaces[activate]._metaWorkspace;
metaWorkspace.activate(global.get_current_time());
}
},
createControllerBar: function() {
let panel = new St.BoxLayout({ 'pack-start': true, vertical: true });
let actor = new St.BoxLayout({ 'pack-start': true });
let active = global.screen.get_active_workspace_index();
let adj = new St.Adjustment({ value: active,
lower: 0,
page_increment: 1,
page_size: 1,
step_increment: 0,
upper: this._workspaces.length });
this._scroll = new St.ScrollBar({ adjustment: adj,
vertical: false,
name: 'SwitchScroll' });
// we have set adj.step_increment to 0, so all scroll wheel events
// are processed with this handler - this allows us to animate the
// workspace switch
this._scroll.connect('scroll-event',
Lang.bind(this, this._onScrollEvent));
this._scroll.adjustment.connect('notify::value',
Lang.bind(this, this._onScroll));
this._scroll.connect('scroll-start', Lang.bind(this,
function() {
this._scrolling = true;
}));
this._scroll.connect('scroll-stop', Lang.bind(this,
function() {
this._scrolling = false;
this._scrollToActive(true);
}));
let addButton = new St.Button({ style_class: "workspace-controls add" });
this._addButton = addButton;
addButton.connect('clicked', Lang.bind(this, this._addNewWorkspace));
addButton._delegate = addButton;
addButton._delegate.acceptDrop = Lang.bind(this, function(source, actor, x, y, time) {
return this._acceptNewWorkspaceDrop(source, actor, x, y, time);
});
actor.add(addButton, {x_align: St.Align.END, y_align: St.Align.START, 'y-fill': false});
let removeButton = new St.Button({ style_class: "workspace-controls remove" });
this._removeButton = removeButton;
removeButton.connect('clicked', Lang.bind(this, function() {
if (this._workspaces.length <= 1)
return;
let index = global.screen.get_active_workspace_index();
if (index == 0)
return;
global.screen.remove_workspace(this._workspaces[index]._metaWorkspace, global.get_current_time());
}));
actor.add(removeButton, { x_align: St.Align.END, y_align: St.Align.START, 'y-fill': false });
this._updatePanelVisibility();
panel.add(this._createPositionalIndicator(), {expand: true, 'x-fill': true, 'y-fill': true});
panel.add(this._scroll, { expand: true,
'x-fill': true,
'y-fill': false,
y_align: St.Align.START });
actor.add(panel, {expand: true, 'x-fill': true, 'y-fill': true});
return actor;
},
_addIndicatorClone: function(i, active) {
let actor = new St.Button({ style_class: 'workspace-indicator' });
if (active) {
actor.style_class = 'workspace-indicator active';
}
actor.connect('clicked', Lang.bind(this, function() {
if (this._workspaces[i] != undefined)
this._workspaces[i]._metaWorkspace.activate(global.get_current_time());
}));
actor._delegate = {};
actor._delegate.acceptDrop = Lang.bind(this, function(source, actor, x, y, time) {
if (this._workspaces[i].acceptDrop(source, actor, x, y, time)) {
this._workspaces[i]._metaWorkspace.activate(global.get_current_time());
return true;
}
else
return false;
});
actor.connect('scroll-event', Lang.bind(this, this._onScrollEvent));
this._indicatorsPanel.add_actor(actor);
let [a, spacing] = actor.get_theme_node().get_length('border-spacing', false);
if (this._indicatorsPanelWidth < spacing * (i + 1) + actor.width * (i + 1))
actor.hide();
actor.x = spacing * i + actor.width * i;
},
_fillPositionalIndicator: function() {
if (this._indicatorsPanel == null || this._indicatorsPanelWidth == null)
return;
let width = this._indicatorsPanelWidth;
this._indicatorsPanel.remove_all();
let activeWorkspaceIndex = global.screen.get_active_workspace_index();
for (let i = 0; i < this._workspaces.length; i++) {
this._addIndicatorClone(i, i == activeWorkspaceIndex);
}
this._indicatorsPanel.x = (this._indicatorsPanelWidth - this._indicatorsPanel.width) / 2;
},
_createPositionalIndicator: function() {
let actor = new St.Bin({ style_class: 'panel-button' });
let group = new Clutter.Group();
this._indicatorsPanel = new Shell.GenericContainer();
this._indicatorsPanel.connect('get-preferred-width', Lang.bind(this, function (actor, fh, alloc) {
let children = actor.get_children();
let width = 0;
for (let i = 0; i < children.length; i++) {
if (!children[i].visible)
continue;
if (children[i].x + children[i].width <= width)
continue;
width = children[i].x + children[i].width;
}
alloc.min_size = width;
alloc.natural_size = width;
}));
this._indicatorsPanel.connect('get-preferred-height', Lang.bind(this, function (actor, fw, alloc) {
let children = actor.get_children();
let height = 0;
if (children.length)
height = children[0].height;
alloc.min_size = height;
alloc.natural_size = height;
}));
this._indicatorsPanel.connect('allocate', Lang.bind(this, function (actor, box, flags) {
let children = actor.get_children();
for (let i = 0; i < children.length; i++) {
if (!children[i].visible)
continue;
let childBox = new Clutter.ActorBox();
childBox.x1 = children[i].x;
childBox.y1 = 0;
childBox.x2 = children[i].x + children[i].width;
childBox.y2 = children[i].height;
children[i].allocate(childBox, flags);
}
}));
group.add_actor(this._indicatorsPanel);
actor.set_child(group);
actor.set_alignment(St.Align.START, St.Align.START);
actor.set_fill(true, true);
this._indicatorsPanel.hide();
actor.connect('notify::width', Lang.bind(this, function(actor) {
this._indicatorsPanelWidth = actor.width;
this._updatePanelVisibility();
}));
actor.connect('destroy', Lang.bind(this, function() {
this._indicatorsPanel = null;
}));
return actor;
},
_updatePanelVisibility: function() {
let canRemove = (global.screen.get_active_workspace_index() != 0);
let canAdd = (global.screen.n_workspaces < MAX_WORKSPACES);
this._setButtonSensitivity(this._removeButton, canRemove);
this._setButtonSensitivity(this._addButton, canAdd);
let showSwitches = (global.screen.n_workspaces > 1);
if (this._scroll != null) {
if (showSwitches)
this._scroll.show();
else
this._scroll.hide();
}
if (this._indicatorsPanel != null) {
if (showSwitches)
this._indicatorsPanel.show();
else
this._indicatorsPanel.hide();
}
this._fillPositionalIndicator();
},
_addNewWorkspace: function() {
let ws = global.screen.append_new_workspace(false,
global.get_current_time());
ws.activate(global.get_current_time());
},
_acceptNewWorkspaceDrop: function(source, dropActor, x, y, time) {
this._addNewWorkspace();
return this.acceptNewWorkspaceDrop(source, dropActor, x, y, time);
}
};
function WorkspacesViewSwitch() {
this._init();
}
WorkspacesViewSwitch.prototype = {
VIEW_KEY: 'view',
_init: function() {
this._gconf = Shell.GConf.get_default();
this._mosaicViewButton = null;
this._singleViewButton = null;
this._currentViewType = this._gconf.get_int(this.VIEW_KEY);
this._controlsBar = null;
},
_setView: function(view) {
this._mosaicViewButton.set_checked(WorkspacesViewType.MOSAIC == view);
this._singleViewButton.set_checked(WorkspacesViewType.SINGLE == view);
if (this._currentViewType == view)
return;
this._currentViewType = view;
this._gconf.set_int(this.VIEW_KEY, view);
this.emit('view-changed');
},
createCurrentWorkspaceView: function(width, height, x, y, animate) {
switch (this._currentViewType) {
case WorkspacesViewType.SINGLE:
return new SingleView(width, height, x, y, animate);
case WorkspacesViewType.MOSAIC:
return new MosaicView(width, height, x, y, animate);
default:
return new MosaicView(width, height, x, y, animate);
}
},
createControlsBar: function() {
let actor = new St.BoxLayout();
this._mosaicViewButton = new St.Button({ style_class: "workspace-controls switch-mosaic" });
this._mosaicViewButton.set_toggle_mode(true);
this._mosaicViewButton.connect('clicked', Lang.bind(this, function() {
this._setView(WorkspacesViewType.MOSAIC);
}));
actor.add(this._mosaicViewButton, {'y-fill' : false, 'y-align' : St.Align.START});
this._singleViewButton = new St.Button({ style_class: "workspace-controls switch-single" });
this._singleViewButton.set_toggle_mode(true);
this._singleViewButton.connect('clicked', Lang.bind(this, function() {
this._setView(WorkspacesViewType.SINGLE);
}));
actor.add(this._singleViewButton, {'y-fill' : false, 'y-align' : St.Align.START});
if (this._currentViewType == WorkspacesViewType.MOSAIC)
this._mosaicViewButton.set_checked(true);
else
this._singleViewButton.set_checked(true);
this._nWorkspacesNotifyId =
global.screen.connect('notify::n-workspaces',
Lang.bind(this, this._workspacesChanged));
actor.connect('destroy', Lang.bind(this, function() {
this._controlsBar = null;
global.screen.disconnect(this._nWorkspacesNotifyId);
}));
this._controlsBar = actor;
this._workspacesChanged();
return actor;
},
_workspacesChanged: function() {
if (this._controlsBar == null)
return;
if (global.screen.n_workspaces == 1)
this._controlsBar.set_opacity(0);
else
this._controlsBar.set_opacity(255);
}
};
Signals.addSignalMethods(WorkspacesViewSwitch.prototype);