/usr/share/unity-2d/spread/Windows.qml is in unity-2d-spread 5.10.0-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* This file is part of unity-2d
*
* Copyright 2010-2011 Canonical Ltd.
*
* 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; version 3.
*
* 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/>.
*/
import QtQuick 1.0
import "utils.js" as Utils
import Unity2d 1.0
/* The main component that manages the windows.
This only acts as an outer shell, the actual logic is pretty much all in SpreadLayout.qml
and SpreadItem.qml
In the rest of the comments there will be some recurring terms that I explain below:
- screen mode: in this mode each shot is positioned and scaled exactly as the real window.
- spread mode: in this mode each shot is constrained to a cell in a layout.
- intro animation: the animation that moves the shots from screen to spread mode
- outro animation: the animation that moves the shots from spread mode back to screen mode
The context property called control is the initiator of the entire spread process, and
is triggered by D-Bus calls on the C++ side.
*/
GridView {
id: windows
signal clicked
signal entered
signal windowActivated(variant window)
keyNavigationWraps: state == "zoomed"
MouseArea {
anchors.fill: parent
onClicked: windows.clicked()
/* Eating all mouse events so that they are not passed beneath the workspace */
hoverEnabled: true
onEntered: windows.entered()
}
/* This proxy model takes care of removing all windows that are not on
the current workspace and that are not pinned to all workspaces. */
SortFilterProxyModel {
id: filteredByWorkspace
model: switcher.allWindows
dynamicSortFilter: true
filterRole: WindowInfo.RoleWorkspace
filterRegExp: RegExp("^%1|-2$".arg(workspace.workspaceNumber))
}
/* If there's any application filter set, this proxy model will remove
all windows that do not belong to it. */
SortFilterProxyModel {
id: filteredByApplication
model: filteredByWorkspace
dynamicSortFilter: true
filterRole: WindowInfo.RoleDesktopFile
filterRegExp: RegExp("%1".arg(switcher.applicationFilter))
}
/* This proxy model takes care of removing all windows that are not on
the screen of this spread. */
SortFilterProxyModel {
id: filteredByScreen
model: filteredByApplication
dynamicSortFilter: true
filterRole: WindowInfo.RoleScreen
filterRegExp: RegExp("%1".arg(declarativeView.screen.screen))
}
property int columns: Math.ceil(Math.sqrt(count))
property int rows: Math.ceil(count / columns)
property int cellSpacing: 10
cellWidth: Math.floor(width / columns)
cellHeight: height / rows
/* Set the model only when the component is ready; otherwise, the
* initialization gets somehow messed up and the "columns" and "rows"
* variables are set to those of the first workspace. */
Component.onCompleted: {
model = filteredByScreen
}
delegate:
Item {
id: cell
ScaledItem {
id: scaledCell
target: cell
itemWidth: window.size.width
itemHeight: window.size.height
parent: windows
}
/* We are not using GridView.isCurrentItem because it mysteriously
* returns "false" the first time the spread is activated. Couldn't
* reproduce the same behaviour with simpler test cases.
*/
focus: GridView.view.currentIndex == index
/* Workaround http://bugreports.qt.nokia.com/browse/QTBUG-15642 where onAdd is not called for the first item */
//GridView.onAdd:
Component.onCompleted: if (!switcher.initial) addAnimation.start()
GridView.onRemove: if (!switcher.initial) removeAnimation.start()
width: windows.cellWidth
height: windows.cellHeight
Keys.onPressed: {
switch (event.key) {
case Qt.Key_Enter:
case Qt.Key_Return:
{
windows.windowActivated(spreadWindow)
event.accepted = true
}
}
}
Window {
id: spreadWindow
property bool animateFollow: false
property bool followCell: true
isSelected: cell.activeFocus && spreadManager.currentSwitcher == switcher
onEntered: {
windows.currentIndex = index
/* Make sure the workspace is notified as well */
windows.entered()
}
onClicked: windows.windowActivated(spreadWindow)
/* Reparenting hack inspired by http://developer.qt.nokia.com/wiki/Drag_and_Drop_within_a_GridView */
parent: windows
z: window.z
/* Duplicated animation code because QML does not support grouping
of identical Behaviors yet.
http://bugreports.qt.nokia.com/browse/QTBUG-16375
*/
Behavior on x { enabled: spreadWindow.animateFollow; NumberAnimation { duration: Utils.transitionDuration; easing.type: Easing.InOutQuad } }
Behavior on y { enabled: spreadWindow.animateFollow; NumberAnimation { duration: Utils.transitionDuration; easing.type: Easing.InOutQuad } }
Behavior on width { enabled: spreadWindow.animateFollow; NumberAnimation { duration: Utils.transitionDuration; easing.type: Easing.InOutQuad } }
Behavior on height { enabled: spreadWindow.animateFollow; NumberAnimation { duration: Utils.transitionDuration; easing.type: Easing.InOutQuad } }
windowInfo: window
state: windows.state == "screen" ? "screen" : "spread"
states: [
State {
name: "screen"
PropertyChanges {
target: spreadWindow
x: window.position.x - declarativeView.globalPosition.x
y: window.position.y - declarativeView.globalPosition.y
width: window.size.width
height: window.size.height
animateFollow: false
}
},
State {
name: "spread"
PropertyChanges {
target: spreadWindow
/* Center the window in its cell */
x: followCell ? scaledCell.x + cellSpacing : x
y: followCell ? scaledCell.y + cellSpacing : y
width: followCell ? scaledCell.width - cellSpacing * 2 : width
height: followCell ? scaledCell.height - cellSpacing * 2: height
animateFollow: !switcher.initial
}
}
]
SequentialAnimation {
id: addAnimation
PropertyAction { target: spreadWindow; property: "animateFollow"; value: false }
NumberAnimation { target: spreadWindow; property: "opacity"; from: 0; to: 1.0; duration: Utils.transitionDuration; easing.type: Easing.InOutQuad }
PropertyAction { target: spreadWindow; property: "animateFollow"; value: true }
}
SequentialAnimation {
id: removeAnimation
/* FIXME: do not work if windowInfo is destroyed */
PropertyAction { target: spreadWindow; property: "followCell"; value: false }
NumberAnimation { target: spreadWindow; property: "opacity"; to: 0.0; duration: Utils.transitionDuration; easing.type: Easing.InOutQuad }
/* spreadWindow was reparented from cell and will not be deleted when cell is.
Delete it manually. */
ScriptAction { script: spreadWindow.deleteLater() }
}
transitions: [
Transition {
to: "screen,spread"
SequentialAnimation {
PropertyAction { target: spreadWindow; property: "animating"; value: true }
NumberAnimation {
properties: "x,y,width,height"
duration: Utils.transitionDuration
easing.type: Easing.InOutQuad
}
/* Apply final value to spreadWindow.animateFollow by not specifying a value */
PropertyAction { property: "animateFollow" }
PropertyAction { target: spreadWindow; property: "animating"; value: false }
}
}
]
}
}
}
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