kwin/effects/dialogparent/package/contents/code/main.js
Vlad Zagorodniy a281f2bce1 [effects/dialogparent] Fix flickering of parent windows
Summary:
If a modal window is closed and some alternative effect that animates
the disappearing of windows is enabled(e.g. the Glide effect, or the
Scale effect), the Dialog Parent effect can cause flickering of the
parent window because its animation duration doesn't match duration of
those alternative effects.

Also, if the Fade effect, the Glide effect, and the Scale effect are
disabled, the Dialog Parent will keep the parent window alive for no
good reason.

This change addresses that problem by adding keepAlive property to
`animate` function so scripted effects have more control over lifetime
of animated windows.

If both a modal window and its parent window are closed at the same time
(and there is no effect that animates the disappearing of windows), the
Dialog Parent will stop immediately(because windowDeleted will be
emitted right after windowClosed signal).

If both a modal window and its parent window are closed at the same time
(and there is effect that animates the disappearing of windows), the
Dialog Parent won't reference the latter window. Thus, it won't cause
flickering. I.e. it will "passively" animate parent windows.

BUG: 355036
FIXED-IN: 5.15.0

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: davidedmundson, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D14919
2018-10-10 18:34:12 +03:00

143 lines
5.1 KiB
JavaScript

/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2013 Martin Gräßlin <mgraesslin@kde.org>
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/>.
*********************************************************************/
/*global effect, effects, animate, cancel, set, animationTime, Effect, QEasingCurve */
/*jslint continue: true */
var dialogParentEffect = {
duration: animationTime(300),
windowAdded: function (window) {
"use strict";
if (window === null || window.modal === false) {
return;
}
dialogParentEffect.dialogGotModality(window)
},
dialogGotModality: function (window) {
"use strict";
var mainWindows = window.mainWindows();
for (var i = 0; i < mainWindows.length; i += 1) {
var w = mainWindows[i];
if (w.dialogParentAnimation !== undefined) {
continue;
}
dialogParentEffect.startAnimation(w, dialogParentEffect.duration);
}
},
startAnimation: function (window, duration) {
"use strict";
if (window.visible === false) {
return;
}
window.dialogParentAnimation = set({
window: window,
duration: duration,
animations: [{
type: Effect.Saturation,
to: 0.4
}, {
type: Effect.Brightness,
to: 0.6
}]
});
},
windowClosed: function (window) {
"use strict";
dialogParentEffect.cancelAnimation(window);
if (window.modal === false) {
return;
}
dialogParentEffect.dialogLostModality(window);
},
dialogLostModality: function (window) {
"use strict";
var mainWindows = window.mainWindows();
for (var i = 0; i < mainWindows.length; i += 1) {
var w = mainWindows[i];
if (w.dialogParentAnimation === undefined) {
continue;
}
cancel(w.dialogParentAnimation);
w.dialogParentAnimation = undefined;
animate({
window: w,
duration: dialogParentEffect.duration,
keepAlive: false,
animations: [{
type: Effect.Saturation,
from: 0.4,
to: 1.0
}, {
type: Effect.Brightness,
from: 0.6,
to: 1.0
}]
});
}
},
cancelAnimation: function (window) {
"use strict";
if (window.dialogParentAnimation !== undefined) {
cancel(window.dialogParentAnimation);
window.dialogParentAnimation = undefined;
}
},
desktopChanged: function () {
"use strict";
var i, windows, window;
windows = effects.stackingOrder;
for (i = 0; i < windows.length; i += 1) {
window = windows[i];
dialogParentEffect.cancelAnimation(window);
dialogParentEffect.restartAnimation(window);
}
},
modalDialogChanged: function(dialog) {
"use strict";
if (dialog.modal === false)
dialogParentEffect.dialogLostModality(dialog);
else if (dialog.modal === true)
dialogParentEffect.dialogGotModality(dialog);
},
restartAnimation: function (window) {
"use strict";
if (window === null || window.findModal() === null) {
return;
}
dialogParentEffect.startAnimation(window, 1);
},
init: function () {
"use strict";
var i, windows;
effects.windowAdded.connect(dialogParentEffect.windowAdded);
effects.windowClosed.connect(dialogParentEffect.windowClosed);
effects.windowMinimized.connect(dialogParentEffect.cancelAnimation);
effects.windowUnminimized.connect(dialogParentEffect.restartAnimation);
effects.windowModalityChanged.connect(dialogParentEffect.modalDialogChanged)
effects['desktopChanged(int,int)'].connect(dialogParentEffect.desktopChanged);
effects.desktopPresenceChanged.connect(dialogParentEffect.cancelAnimation);
effects.desktopPresenceChanged.connect(dialogParentEffect.restartAnimation);
// start animation
windows = effects.stackingOrder;
for (i = 0; i < windows.length; i += 1) {
dialogParentEffect.restartAnimation(windows[i]);
}
}
};
dialogParentEffect.init();