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windowPreview.js
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windowPreview.js
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/*
* This file is part of the Dash-To-Panel extension for Gnome 3
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*
* Credits:
* This file is based on code from the Dash to Dock extension by micheleg
* and code from the Taskbar extension by Zorin OS
* Some code was also adapted from the upstream Gnome Shell source code.
*/
const BoxPointer = imports.ui.boxpointer;
const Clutter = imports.gi.Clutter;
const GLib = imports.gi.GLib;
const Gtk = imports.gi.Gtk;
const Lang = imports.lang;
const Main = imports.ui.main;
const Mainloop = imports.mainloop;
const Meta = imports.gi.Meta;
const PopupMenu = imports.ui.popupMenu;
const RemoteMenu = imports.ui.remoteMenu;
const Signals = imports.signals;
const Shell = imports.gi.Shell;
const St = imports.gi.St;
const Tweener = imports.ui.tweener;
const WindowMenu = imports.ui.windowMenu;
const Workspace = imports.ui.workspace;
const Me = imports.misc.extensionUtils.getCurrentExtension();
const Taskbar = Me.imports.taskbar;
const Convenience = Me.imports.convenience;
const AppIcons = Me.imports.appIcons;
let DEFAULT_THUMBNAIL_WIDTH = 350;
let DEFAULT_THUMBNAIL_HEIGHT = 200;
const thumbnailPreviewMenu = new Lang.Class({
Name: 'DashToPanel.ThumbnailPreviewMenu',
Extends: PopupMenu.PopupMenu,
_init: function(source, settings) {
this._dtpSettings = settings;
let side = Taskbar.getPosition();
this.parent(source.actor, 0.5, side);
// We want to keep the item hovered while the menu is up
this.blockSourceEvents = false;
this._source = source;
this._app = this._source.app;
this.actor.add_style_class_name('app-well-menu');
this.actor.set_style("max-width: " + (Main.layoutManager.primaryMonitor.width - 22) + "px;");
this.actor.hide();
// Chain our visibility and lifecycle to that of the source
this._mappedId = this._source.actor.connect('notify::mapped', Lang.bind(this, function () {
if (!this._source.actor.mapped)
this.close();
}));
this._destroyId = this._source.actor.connect('destroy', Lang.bind(this, this.destroy));
Main.uiGroup.add_actor(this.actor);
// Change the initialized side where required.
this._arrowSide = side;
this._boxPointer._arrowSide = side;
this._boxPointer._userArrowSide = side;
this._previewBox = new thumbnailPreviewList(this._app, this._dtpSettings);
this.addMenuItem(this._previewBox);
this._peekMode = false;
this._peekModeEnterTimeoutId = 0;
this._peekModeDisableTimeoutId = 0;
this._DISABLE_PEEK_MODE_TIMEOUT = 50;
this._peekedWindow = null;
this._peekModeSavedWorkspaces = null;
this._peekModeSavedOrder = null;
this._trackOpenWindowsId = null;
this._trackClosedWindowsIds = null;
this._peekModeOriginalWorkspace = null;
this._peekModeCurrentWorkspace = null;
},
enableWindowPreview: function() {
// Show window previews on mouse hover
this._enterSourceId = this._source.actor.connect('enter-event', Lang.bind(this, this._onEnter));
this._leaveSourceId = this._source.actor.connect('leave-event', Lang.bind(this, this._onLeave));
this._enterMenuId = this.actor.connect('enter-event', Lang.bind(this, this._onMenuEnter));
this._leaveMenuId = this.actor.connect('leave-event', Lang.bind(this, this._onMenuLeave));
},
disableWindowPreview: function() {
if (this._enterSourceId) {
this._source.actor.disconnect(this._enterSourceId);
this._enterSourceId = 0;
}
if (this._leaveSourceId) {
this._source.actor.disconnect(this._leaveSourceId);
this._leaveSourceId = 0;
}
if (this._enterMenuId) {
this.actor.disconnect(this._enterMenuId);
this._enterMenuId = 0;
}
if (this._leaveMenuId) {
this.actor.disconnect(this._leaveMenuId);
this._leaveMenuId = 0;
}
},
requestCloseMenu: function() {
// The "~0" argument makes the animation display.
this.close(~0);
},
_redisplay: function() {
this._previewBox._shownInitially = false;
this._previewBox._redisplay();
},
popup: function() {
let windows = AppIcons.getInterestingWindows(this._app, this._dtpSettings);
if (windows.length > 0) {
this._redisplay();
this.open();
this._source.emit('sync-tooltip');
}
},
_onMenuEnter: function () {
this.cancelClose();
this.hoverOpen();
},
_onMenuLeave: function () {
this.cancelOpen();
this.cancelClose();
this._hoverCloseTimeoutId = Mainloop.timeout_add(Taskbar.DASH_ITEM_HOVER_TIMEOUT, Lang.bind(this, this.hoverClose));
},
_onEnter: function () {
this.cancelOpen();
this.cancelClose();
this._hoverOpenTimeoutId = Mainloop.timeout_add(this._dtpSettings.get_int('show-window-previews-timeout'), Lang.bind(this, this.hoverOpen));
},
_onLeave: function () {
this.cancelOpen();
this.cancelClose();
// grabHelper.grab() is usually called when the menu is opened. However, there seems to be a bug in the
// underlying gnome-shell that causes all window contents to freeze if the grab and ungrab occur
// in quick succession in timeouts from the Mainloop (for example, clicking the icon as the preview window is opening)
// So, instead wait until the mouse is leaving the icon (and might be moving toward the open window) to trigger the grab
if(this.isOpen)
this._source.menuManagerWindowPreview._grabHelper.grab({ actor: this.actor, focus: this.sourceActor,
onUngrab: Lang.bind(this, this.requestCloseMenu) });
this._hoverCloseTimeoutId = Mainloop.timeout_add(this._dtpSettings.get_int('leave-timeout'), Lang.bind(this, this.hoverClose));
},
cancelOpen: function () {
if(this._hoverOpenTimeoutId) {
Mainloop.source_remove(this._hoverOpenTimeoutId);
this._hoverOpenTimeoutId = null;
}
},
cancelClose: function () {
if(this._hoverCloseTimeoutId) {
Mainloop.source_remove(this._hoverCloseTimeoutId);
this._hoverCloseTimeoutId = null;
}
},
hoverOpen: function () {
this._hoverOpenTimeoutId = null;
if (!this.isOpen && this._dtpSettings.get_boolean("show-window-previews")) {
this.popup();
let focusedApp = Shell.WindowTracker.get_default().focus_app;
if (focusedApp && focusedApp.get_name() === "Oracle VM VirtualBox") {
this.actor.grab_key_focus();
}
}
},
hoverClose: function () {
this._hoverCloseTimeoutId = null;
this.close(~0);
},
destroy: function () {
if (this._mappedId)
this._source.actor.disconnect(this._mappedId);
if (this._destroyId)
this._source.actor.disconnect(this._destroyId);
if (this._enterSourceId)
this._source.actor.disconnect(this._enterSourceId);
if (this._leaveSourceId)
this._source.actor.disconnect(this._leaveSourceId);
if (this._enterMenuId)
this.actor.disconnect(this._enterMenuId);
if (this._leaveMenuId)
this.actor.disconnect(this._leaveMenuId);
this.parent();
},
close: function(animate) {
this.cancelOpen();
if (this.isOpen)
this.emit('open-state-changed', false);
if (this._activeMenuItem)
this._activeMenuItem.setActive(false);
if (this._boxPointer.actor.visible) {
this._boxPointer.hide(animate, Lang.bind(this, function() {
this.emit('menu-closed', this);
}));
}
if(this._peekMode)
this._disablePeekMode();
this.isOpen = false;
},
_emulateSwitchingWorkspaces: function(oldWorkspace, newWorkspace) {
if(oldWorkspace == newWorkspace)
return;
oldWorkspace.list_windows().forEach(Lang.bind(this, function(window) {
if(!window.is_on_all_workspaces() && !window.minimized) {
let windowActor = window.get_compositor_private();
Tweener.addTween(windowActor, {
opacity: 0,
time: Taskbar.DASH_ANIMATION_TIME,
transition: 'easeOutQuad',
onComplete: Lang.bind(this, function(windowActor) {
windowActor.hide();
windowActor.opacity = this._dtpSettings.get_int('peek-mode-opacity');
}),
onCompleteParams: [windowActor]
});
}
}));
newWorkspace.list_windows().forEach(Lang.bind(this, function(window) {
if(!window.is_on_all_workspaces() && !window.minimized) {
let windowActor = window.get_compositor_private();
windowActor.show();
windowActor.opacity = 0;
Tweener.addTween(windowActor, {
opacity: this._dtpSettings.get_int('peek-mode-opacity'),
time: Taskbar.DASH_ANIMATION_TIME,
transition: 'easeOutQuad'
});
}
}));
this._peekModeCurrentWorkspace = newWorkspace;
},
_disablePeekMode: function() {
if(this._peekModeDisableTimeoutId) {
Mainloop.source_remove(this._peekModeDisableTimeoutId);
this._peekModeDisableTimeoutId = null;
}
//Restore windows' old state
if(this._peekedWindow) {
let peekedWindowActor = this._peekedWindow.get_compositor_private();
let originalIndex = this._peekModeSavedOrder.indexOf(peekedWindowActor);
let locatedOnOriginalWorkspace = this._peekModeCurrentWorkspace == this._peekModeOriginalWorkspace;
if(!locatedOnOriginalWorkspace)
this._emulateSwitchingWorkspaces(this._peekModeCurrentWorkspace, this._peekModeOriginalWorkspace);
if(peekedWindowActor)
global.window_group.set_child_at_index(peekedWindowActor, originalIndex);
}
this._peekModeSavedWorkspaces.forEach(Lang.bind(this, function(workspace) {
workspace.forEach(Lang.bind(this, function(pairWindowOpacity) {
let window = pairWindowOpacity[0];
let initialOpacity = pairWindowOpacity[1];
let windowActor = window.get_compositor_private();
if(window && windowActor) {
if(window.minimized || !window.located_on_workspace(this._peekModeOriginalWorkspace))
Tweener.addTween(windowActor, {
opacity: 0,
time: Taskbar.DASH_ANIMATION_TIME,
transition: 'easeOutQuad',
onComplete: Lang.bind(windowActor, function() {
windowActor.hide();
windowActor.opacity = initialOpacity;
})
});
else
Tweener.addTween(windowActor, {
opacity: initialOpacity,
time: Taskbar.DASH_ANIMATION_TIME,
transition: 'easeOutQuad'
});
}
}));
}));
this._peekModeSavedWorkspaces = null;
this._peekedWindow = null;
this._peekModeSavedOrder = null;
this._peekModeCurrentWorkspace = null;
this._peekModeOriginalWorkspace = null;
this._trackClosedWindowsIds.forEach(function(pairWindowSignalId) {
if(pairWindowSignalId)
pairWindowSignalId[0].disconnect(pairWindowSignalId[1]);
});
this._trackClosedWindowsIds = null;
if(this._trackOpenWindowsId) {
global.display.disconnect(this._trackOpenWindowsId);
this._trackOpenWindowsId = null;
}
this._peekMode = false;
},
_setPeekedWindow: function(newPeekedWindow) {
if(this._peekedWindow == newPeekedWindow)
return;
//We don't need to bother with animating the workspace out and then in if the old peeked workspace is the same as the new one
let needToChangeWorkspace = !newPeekedWindow.located_on_workspace(this._peekModeCurrentWorkspace) || (newPeekedWindow.is_on_all_workspaces() && this._peekModeCurrentWorkspace != this._peekModeOriginalWorkspace);
if(needToChangeWorkspace) {
//If the new peeked window is on every workspace, we get the original one
//Otherwise, we get the workspace the window is exclusive to
let newWorkspace = newPeekedWindow.get_workspace();
this._emulateSwitchingWorkspaces(this._peekModeCurrentWorkspace, newWorkspace);
}
//Hide currently peeked window and show the new one
if(this._peekedWindow) {
let peekedWindowActor = this._peekedWindow.get_compositor_private();
let originalIndex = this._peekModeSavedOrder.indexOf(peekedWindowActor);
global.window_group.set_child_at_index(peekedWindowActor, originalIndex);
if(this._peekedWindow.minimized || (needToChangeWorkspace && !this._peekedWindow.is_on_all_workspaces()))
Tweener.addTween(peekedWindowActor, {
opacity: 0,
time: Taskbar.DASH_ANIMATION_TIME,
transition: 'easeOutQuad',
onComplete: Lang.bind(this, function(peekedWindowActor) {
peekedWindowActor.hide();
peekedWindowActor.opacity = this._dtpSettings.get_int('peek-mode-opacity');
}),
onCompleteParams: [peekedWindowActor]
});
else
Tweener.addTween(peekedWindowActor, {
opacity: this._dtpSettings.get_int('peek-mode-opacity'),
time: Taskbar.DASH_ANIMATION_TIME,
transition: 'easeOutQuad'
});
}
this._peekedWindow = newPeekedWindow;
let peekedWindowActor = this._peekedWindow.get_compositor_private();
if(this._peekedWindow.minimized) {
peekedWindowActor.opacity = 0;
peekedWindowActor.show();
}
global.window_group.set_child_above_sibling(peekedWindowActor, null);
Tweener.addTween(peekedWindowActor, {
opacity: 255,
time: Taskbar.DASH_ANIMATION_TIME,
transition: 'easeOutQuad'
});
},
_enterPeekMode: function(thumbnail) {
this._peekMode = true;
//Remove the enter peek mode timeout
if(this._peekModeEnterTimeoutId) {
Mainloop.source_remove(this._peekModeEnterTimeoutId);
this._peekModeEnterTimeoutId = null;
}
//Save the visible windows in each workspace and lower their opacity
this._peekModeSavedWorkspaces = [];
this._peekModeOriginalWorkspace = global.screen.get_active_workspace();
this._peekModeCurrentWorkspace = this._peekModeOriginalWorkspace;
for ( let wks=0; wks<global.screen.n_workspaces; ++wks ) {
// construct a list with all windows
let metaWorkspace = global.screen.get_workspace_by_index(wks);
let windows = metaWorkspace.list_windows();
this._peekModeSavedWorkspaces.push([]);
windows.forEach(Lang.bind(this, function(window) {
let actor = window.get_compositor_private();
let initialOpacity = actor.opacity;
Tweener.addTween(actor, {
opacity: this._dtpSettings.get_int('peek-mode-opacity'),
time: Taskbar.DASH_ANIMATION_TIME,
transition: 'easeOutQuad'
});
this._peekModeSavedWorkspaces[wks].push([window, initialOpacity]);
}));
}
//Save the order of the windows in the window group
//From my observation first comes the Meta.BackgroundGroup
//Then come the Meta.WindowActors in the order of stacking:
//first come the minimized windows, then the unminimized
//Additionaly, if you tile a window left/right with <Super + Left/Right>,
//there might appear St.Widget of type "tile preview" that is on top of the stack
this._peekModeSavedOrder = global.window_group.get_children().slice();
//Track closed windows - pairs (window, signal Id), null for backgrounds
this._trackClosedWindowsIds = this._peekModeSavedOrder.map(Lang.bind(this, function(windowActor) {
if(!(windowActor instanceof Meta.BackgroundGroup) && !(windowActor instanceof St.Widget))
return [windowActor.meta_window,
windowActor.meta_window.connect('unmanaged', Lang.bind(this, this._peekModeWindowClosed))];
else
return null;
}));
//Track newly opened windows
if(this._trackOpenWindowsId)
global.display.disconnect(this._trackOpenWindowsId);
this._trackOpenWindowsId = global.display.connect('window-created', Lang.bind(this, this._peekModeWindowOpened));
//Having lowered opacity of all the windows, show the peeked window
this._setPeekedWindow(thumbnail.window);
},
_peekModeWindowClosed: function(window) {
if(this._peekMode && window == this._peekedWindow)
this._disablePeekMode();
},
_windowOnTop: function(window) {
//There can be St.Widgets "tile-preview" on top of the window stack.
//The window is on top if there are no other window actors above it (Except for St.Widgets)
let windowStack = global.window_group.get_children();
let newWindowIndex = windowStack.indexOf(window.get_compositor_private());
for(let index = newWindowIndex + 1; index < windowStack.length; ++index) {
if(windowStack[index] instanceof Meta.WindowActor || windowStack[index] instanceof Meta.BackgroundGroup)
return false;
}
return true;
},
_peekModeWindowOpened: function(display, window) {
this._disablePeekMode();
//If this new window is placed on the top then close the preview
if(this._windowOnTop(window))
this.requestCloseMenu();
}
});
const thumbnailPreview = new Lang.Class({
Name: 'DashToPanel.ThumbnailPreview',
Extends: PopupMenu.PopupBaseMenuItem,
_init: function(window) {
this.window = window;
let scaleFactor = St.ThemeContext.get_for_stage(global.stage).scale_factor;
if(!scaleFactor)
scaleFactor = 1;
this._thumbnailWidth = DEFAULT_THUMBNAIL_WIDTH*scaleFactor;
this._thumbnailHeight = DEFAULT_THUMBNAIL_HEIGHT*scaleFactor;
this.parent({reactive: true});
this._workId = Main.initializeDeferredWork(this.actor, Lang.bind(this, this._onResize));
this._closeButtonId = Main.initializeDeferredWork(this.actor, Lang.bind(this, this._repositionCloseButton));
this.scale = 0;
this.preview = this.getThumbnail();
this.actor.remove_child(this._ornamentLabel);
this.actor._delegate = this;
this.animatingOut = false;
this._windowBox = new St.BoxLayout({ style_class: 'window-box',
x_expand: true,
vertical: true });
this._previewBin = new St.Bin();
this._previewBin.set_size(this._thumbnailWidth, this._thumbnailHeight);
this._closeButton = new St.Button({ style_class: 'window-close',
accessible_name: "Close window" });
this._closeButton.opacity = 0;
this._closeButton.connect('clicked', Lang.bind(this, this._closeWindow));
this.overlayGroup = new Clutter.Actor({layout_manager: new Clutter.BinLayout()});
this.overlayGroup.add_actor(this._previewBin);
this.overlayGroup.add_actor(this._closeButton);
this._title = new St.Label({ text: window.title });
this._titleBin = new St.Bin({ child: this._title,
x_align: St.Align.MIDDLE,
width: this._thumbnailWidth
});
this._titleBin.add_style_class_name("preview-window-title");
this._titleNotifyId = this.window.connect('notify::title', Lang.bind(this, function() {
this._title.set_text(this.window.title);
}));
this._windowBin = new St.Bin({ child: this.overlayGroup,
x_align: St.Align.MIDDLE,
width: this._thumbnailWidth,
height: this._thumbnailHeight
});
this._windowBox.add_child(this._windowBin);
if (this.preview)
this._previewBin.set_child(this.preview);
this._windowBox.add_child(this._titleBin);
this.actor.add_child(this._windowBox);
this._queueRepositionCloseButton();
this.actor.connect('enter-event',
Lang.bind(this, this._onEnter));
this.actor.connect('leave-event',
Lang.bind(this, this._onLeave));
this.actor.connect('key-focus-in',
Lang.bind(this, this._onEnter));
this.actor.connect('key-focus-out',
Lang.bind(this, this._onLeave));
this.actor.connect('motion-event',
Lang.bind(this, this._onMotionEvent));
this.actor.connect('destroy',
Lang.bind(this, this._onDestroy));
this._previewMenuPopupManager = new previewMenuPopupManager(window, this.actor);
},
_onEnter: function(actor, event) {
this._showCloseButton();
let topMenu = this._getTopMenu();
if(topMenu._dtpSettings.get_boolean('peek-mode')) {
if(topMenu._peekMode) {
if(topMenu._peekModeDisableTimeoutId) {
Mainloop.source_remove(topMenu._peekModeDisableTimeoutId);
topMenu._peekModeDisableTimeoutId = null;
}
//Hide the old peeked window and show the window in preview
topMenu._setPeekedWindow(this.window);
} else if(!this.animatingOut) {
//Remove old timeout and set a new one
if(topMenu._peekModeEnterTimeoutId)
Mainloop.source_remove(topMenu._peekModeEnterTimeoutId);
topMenu._peekModeEnterTimeoutId = Mainloop.timeout_add(topMenu._dtpSettings.get_int('enter-peek-mode-timeout'), Lang.bind(this, function() {
topMenu._enterPeekMode(this);
}));
}
}
return Clutter.EVENT_PROPAGATE;
},
_onLeave: function(actor, event) {
if (!this._previewBin.has_pointer &&
!this._closeButton.has_pointer)
this._hideCloseButton();
let topMenu = this._getTopMenu();
if(topMenu._peekMode) {
if(topMenu._peekModeDisableTimeoutId){
Mainloop.source_remove(topMenu._peekModeDisableTimeoutId);
topMenu._peekModeDisableTimeoutId = null;
}
topMenu._peekModeDisableTimeoutId = Mainloop.timeout_add(topMenu._DISABLE_PEEK_MODE_TIMEOUT, function() {
topMenu._disablePeekMode()
});
}
if(topMenu._peekModeEnterTimeoutId) {
Mainloop.source_remove(topMenu._peekModeEnterTimeoutId);
topMenu._peekModeEnterTimeoutId = null;
}
return Clutter.EVENT_PROPAGATE;
},
_idleToggleCloseButton: function() {
this._idleToggleCloseId = 0;
if (!this._previewBin.has_pointer &&
!this._closeButton.has_pointer)
this._hideCloseButton();
return GLib.SOURCE_REMOVE;
},
_showCloseButton: function() {
if (this._windowCanClose()) {
this._closeButton.show();
Tweener.addTween(this._closeButton,
{ opacity: 255,
time: Workspace.CLOSE_BUTTON_FADE_TIME,
transition: 'easeOutQuad' });
}
},
_windowCanClose: function() {
return this.window.can_close() &&
!this._hasAttachedDialogs();
},
_hasAttachedDialogs: function() {
// count trasient windows
let n = 0;
this.window.foreach_transient(function() {n++;});
return n > 0;
},
_hideCloseButton: function() {
Tweener.addTween(this._closeButton,
{ opacity: 0,
time: Workspace.CLOSE_BUTTON_FADE_TIME,
transition: 'easeInQuad' });
},
getThumbnail: function() {
let thumbnail = null;
let mutterWindow = this.window.get_compositor_private();
if (mutterWindow) {
let windowTexture = mutterWindow.get_texture();
let [width, height] = windowTexture.get_size();
this.scale = Math.min(1.0, this._thumbnailWidth / width, this._thumbnailHeight / height);
thumbnail = new Clutter.Clone ({ source: windowTexture,
reactive: true,
width: width * this.scale,
height: height * this.scale });
this._resizeId = mutterWindow.meta_window.connect('size-changed',
Lang.bind(this, this._queueResize));
this._destroyId = mutterWindow.connect('destroy', Lang.bind(this, function() {
thumbnail.destroy();
this._destroyId = 0;
this.animateOutAndDestroy();
}));
}
return thumbnail;
},
_queueResize: function () {
Main.queueDeferredWork(this._workId);
},
_onResize: function() {
let [width, height] = this.preview.get_source().get_size();
this.scale = Math.min(1.0, this._thumbnailWidth / width, this._thumbnailHeight / height);
this.preview.set_size(width * this.scale, height * this.scale);
this._queueRepositionCloseButton();
},
_queueRepositionCloseButton: function () {
Main.queueDeferredWork(this._closeButtonId);
},
_repositionCloseButton: function() {
let rect = this.window.get_compositor_private().meta_window.get_frame_rect();
let cloneWidth = Math.floor(rect.width) * this.scale;
let cloneHeight = Math.floor(rect.height) * this.scale;
let cloneX = (this._thumbnailWidth - cloneWidth) / 2 ;
let cloneY = (this._thumbnailHeight - cloneHeight) / 2;
let buttonX;
if (Clutter.get_default_text_direction() == Clutter.TextDirection.RTL) {
buttonX = cloneX - (this._closeButton.width / 2);
buttonX = Math.max(buttonX, 0);
} else {
buttonX = cloneX + (cloneWidth - (this._closeButton.width / 2));
buttonX = Math.min(buttonX, this._thumbnailWidth - this._closeButton.width);
}
let buttonY = cloneY - (this._closeButton.height / 2);
buttonY = Math.max(buttonY, 0);
this._closeButton.set_position(Math.floor(buttonX), Math.floor(buttonY));
},
_closeWindow: function() {
let topMenu = this._getTopMenu();
if(topMenu._peekModeEnterTimeoutId) {
Mainloop.source_remove(topMenu._peekModeEnterTimeoutId);
topMenu._peekModeEnterTimeoutId = null;
}
this.window.delete(global.get_current_time());
},
show: function(animate) {
let fullWidth = this.actor.get_width();
this.actor.opacity = 0;
this.actor.set_width(0);
let time = animate ? Taskbar.DASH_ANIMATION_TIME : 0;
Tweener.addTween(this.actor,
{ opacity: 255,
width: fullWidth,
time: time,
transition: 'easeInOutQuad'
});
},
animateOutAndDestroy: function() {
this.animatingOut = true;
this._hideCloseButton();
Tweener.addTween(this.actor,
{ width: 0,
opacity: 0,
time: Taskbar.DASH_ANIMATION_TIME,
transition: 'easeOutQuad',
onComplete: Lang.bind(this, function() {
this.destroy();
})
});
},
activate: function() {
let topMenu = this._getTopMenu();
if(topMenu._dtpSettings.get_boolean('peek-mode')) {
if(topMenu._peekMode) {
topMenu._disablePeekMode();
}
else if(topMenu._peekModeEnterTimeoutId) {
Mainloop.source_remove(topMenu._peekModeEnterTimeoutId);
topMenu._peekModeEnterTimeoutId = null;
}
}
Main.activateWindow(this.window);
topMenu.close(~0);
},
_onMotionEvent: function() {
//If in normal mode, then set new timeout for entering peek mode after removing the old one
let topMenu = this._getTopMenu();
if(topMenu._dtpSettings.get_boolean('peek-mode')) {
if(!topMenu._peekMode && !this.animatingOut) {
if(topMenu._peekModeEnterTimeoutId)
Mainloop.source_remove(topMenu._peekModeEnterTimeoutId);
topMenu._peekModeEnterTimeoutId = Mainloop.timeout_add(topMenu._dtpSettings.get_int('enter-peek-mode-timeout'), Lang.bind(this, function() {
topMenu._enterPeekMode(this);
}));
}
}
},
_onButtonReleaseEvent: function(actor, event) {
this.actor.remove_style_pseudo_class ('active');
switch (event.get_button()) {
case 1:
// Left click
this.activate(event);
break;
case 2:
// Middle click
if (this._getTopMenu()._dtpSettings.get_boolean('preview-middle-click-close')) {
this._closeWindow();
}
break;
case 3:
// Right click
this.showContextMenu(event);
break;
}
return Clutter.EVENT_STOP;
},
showContextMenu: function(event) {
let coords = event.get_coords();
this._previewMenuPopupManager.showWindowMenuForWindow({
x: coords[0],
y: coords[1],
width: 0,
height: 0
});
},
_onDestroy: function() {
this.window.disconnect(this._titleNotifyId);
this._titleNotifyId = 0;
}
});
const thumbnailPreviewList = new Lang.Class({
Name: 'DashToPanel.ThumbnailPreviewList',
Extends: PopupMenu.PopupMenuSection,
_init: function(app, settings) {
this._dtpSettings = settings;
this.parent();
this._ensurePreviewVisibilityTimeoutId = 0;
this.actor = new St.ScrollView({ name: 'dashtopanelThumbnailScrollview',
hscrollbar_policy: Gtk.PolicyType.NEVER,
vscrollbar_policy: Gtk.PolicyType.NEVER,
enable_mouse_scrolling: true });
this.actor.connect('scroll-event', Lang.bind(this, this._onScrollEvent ));
this.box.set_vertical(false);
this.box.set_name("dashtopanelThumbnailList");
this.actor.add_actor(this.box);
this.actor._delegate = this;
this._shownInitially = false;
this.app = app;
this._redisplayId = Main.initializeDeferredWork(this.actor, Lang.bind(this, this._redisplay));
this._scrollbarId = Main.initializeDeferredWork(this.actor, Lang.bind(this, this._showHideScrollbar));
if (this._stateChangedId > 0) {
this.app.disconnect(this._stateChangedId);
this._stateChangedId = 0;
}
this.actor.connect('destroy', Lang.bind(this, this._onDestroy));
this._stateChangedId = this.app.connect('windows-changed',
Lang.bind(this,
this._queueRedisplay));
},
_needsScrollbar: function() {
let topMenu = this._getTopMenu();
let [topMinWidth, topNaturalWidth] = topMenu.actor.get_preferred_width(-1);
let topThemeNode = topMenu.actor.get_theme_node();
let topMaxWidth = topThemeNode.get_max_width();
return topMaxWidth >= 0 && topNaturalWidth >= topMaxWidth;
},
_showHideScrollbar: function() {
let needsScrollbar = this._needsScrollbar();
// St.ScrollView always requests space vertically for a possible horizontal
// scrollbar if in AUTOMATIC mode. This looks bad when we *don't* need it,
// so turn off the scrollbar when that's true. Dynamic changes in whether
// we need it aren't handled properly.
this.actor.hscrollbar_policy =
needsScrollbar ? Gtk.PolicyType.AUTOMATIC : Gtk.PolicyType.NEVER;
if (needsScrollbar)
this.actor.add_style_pseudo_class('scrolled');
else
this.actor.remove_style_pseudo_class('scrolled');
},
_queueScrollbar: function () {
Main.queueDeferredWork(this._scrollbarId);
},
_queueRedisplay: function () {
Main.queueDeferredWork(this._redisplayId);
},
_onScrollEvent: function(actor, event) {
// Event coordinates are relative to the stage but can be transformed
// as the actor will only receive events within his bounds.
let stage_x, stage_y, ok, event_x, event_y, actor_w, actor_h;
[stage_x, stage_y] = event.get_coords();
[ok, event_x, event_y] = actor.transform_stage_point(stage_x, stage_y);
[actor_w, actor_h] = actor.get_size();
// If the scroll event is within a 1px margin from
// the relevant edge of the actor, let the event propagate.
if (event_y >= actor_h - 2)
return Clutter.EVENT_PROPAGATE;
// reset timeout to avid conflicts with the mousehover event
if (this._ensurePreviewVisibilityTimeoutId>0) {
Mainloop.source_remove(this._ensurePreviewVisibilityTimeoutId);
this._ensurePreviewVisibilityTimeoutId = 0;
}
// Skip to avoid double events mouse
if (event.is_pointer_emulated())
return Clutter.EVENT_STOP;
let adjustment, delta;
adjustment = this.actor.get_hscroll_bar().get_adjustment();
let increment = adjustment.step_increment;
switch ( event.get_scroll_direction() ) {
case Clutter.ScrollDirection.UP:
delta = -increment;
break;
case Clutter.ScrollDirection.DOWN:
delta = +increment;
break;
case Clutter.ScrollDirection.SMOOTH:
let [dx, dy] = event.get_scroll_delta();
delta = dy*increment;
delta += dx*increment;
break;
}
adjustment.set_value(adjustment.get_value() + delta);
return Clutter.EVENT_STOP;
},
_onDestroy: function() {
this.app.disconnect(this._stateChangedId);
this._stateChangedId = 0;
},
_createPreviewItem: function(window) {
let preview = new thumbnailPreview(window);
preview.actor.connect('notify::hover', Lang.bind(this, function() {
if (preview.actor.hover){
this._ensurePreviewVisibilityTimeoutId = Mainloop.timeout_add(100, Lang.bind(this, function(){
Taskbar.ensureActorVisibleInScrollView(this.actor, preview.actor);
this._ensurePreviewVisibilityTimeoutId = 0;
return GLib.SOURCE_REMOVE;
}));
} else {
if (this._ensurePreviewVisibilityTimeoutId>0) {
Mainloop.source_remove(this._ensurePreviewVisibilityTimeoutId);
this._ensurePreviewVisibilityTimeoutId = 0;
}
}
}));
preview.actor.connect('key-focus-in',
Lang.bind(this, function(actor) {
let [x_shift, y_shift] = Taskbar.ensureActorVisibleInScrollView(this.actor, actor);
}));
return preview;
},
_redisplay: function () {
let windows = AppIcons.getInterestingWindows(this.app, this._dtpSettings).sort(this.sortWindowsCompareFunction);
let children = this.box.get_children().filter(function(actor) {
return actor._delegate.window && actor._delegate.preview;
});
// Apps currently in the taskbar
let oldWin = children.map(function(actor) {
return actor._delegate.window;
});
// Apps supposed to be in the taskbar
let newWin = windows;
let addedItems = [];
let removedActors = [];