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latte-dock/plasmoid/package/contents/ui/taskslayout/ScrollableList.qml

403 lines
17 KiB
QML

/*
* Copyright 2019 Michail Vourlakos <mvourlakos@gmail.com>
*
* 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/>.
*/
import QtQuick 2.7
import QtQuick.Controls 1.4
import org.kde.plasma.plasmoid 2.0
import org.kde.plasma.core 2.0 as PlasmaCore
import org.kde.latte 0.2 as Latte
Flickable{
id: flickableContainer
clip: false
flickableDirection: plasmoid.formFactor === PlasmaCore.Types.Horizontal ? Flickable.HorizontalFlick : Flickable.VerticalFlick
interactive: false
property int offset: 0
readonly property bool animationsFinished: !horizontalAnimation.running && !verticalAnimation.running
readonly property bool centered: userPanelPosition === Latte.Types.Center
readonly property bool reversed: Qt.application.layoutDirection === Qt.RightToLeft
readonly property bool contentsExceed: {
if (root.scrollingEnabled) {
return (!root.vertical ? Math.floor(contentWidth) > width : Math.floor(contentHeight) > height);
}
return false;
}
readonly property int contentsExtraSpace: {
if (contentsExceed) {
if (!root.vertical) {
return contentWidth - width;
} else {
return contentHeight - height;
}
}
return 0;
}
readonly property int scrollFirstPos: 0
readonly property int scrollLastPos: contentsExtraSpace
readonly property int scrollStep: root.iconSize * 1.5
readonly property int currentPos: !root.vertical ? contentX : contentY
readonly property int autoScrollTriggerLength: root.iconSize + root.lengthMargins/2
readonly property int alignment: {
if (plasmoid.location === PlasmaCore.Types.LeftEdge) {
if (centered) return Latte.Types.LeftEdgeCenterAlign;
if (userPanelPosition === Latte.Types.Top) return Latte.Types.LeftEdgeTopAlign;
if (userPanelPosition === Latte.Types.Bottom) return Latte.Types.LeftEdgeBottomAlign;
}
if (plasmoid.location === PlasmaCore.Types.RightEdge) {
if (centered) return Latte.Types.RightEdgeCenterAlign;
if (userPanelPosition === Latte.Types.Top) return Latte.Types.RightEdgeTopAlign;
if (userPanelPosition === Latte.Types.Bottom) return Latte.Types.RightEdgeBottomAlign;
}
if (plasmoid.location === PlasmaCore.Types.BottomEdge) {
if (centered) return Latte.Types.BottomEdgeCenterAlign;
if ((userPanelPosition === Latte.Types.Left && !reversed)
|| (userPanelPosition === Latte.Types.Right && reversed)) {
return Latte.Types.BottomEdgeLeftAlign;
}
if ((userPanelPosition === Latte.Types.Right && !reversed)
|| (userPanelPosition === Latte.Types.Left && reversed)) {
return Latte.Types.BottomEdgeRightAlign;
}
}
if (plasmoid.location === PlasmaCore.Types.TopEdge) {
if (centered) return Latte.Types.TopEdgeCenterAlign;
if ((userPanelPosition === Latte.Types.Left && !reversed)
|| (userPanelPosition === Latte.Types.Right && reversed)) {
return Latte.Types.TopEdgeLeftAlign;
}
if ((userPanelPosition === Latte.Types.Right && !reversed)
|| (userPanelPosition === Latte.Types.Left && reversed)) {
return Latte.Types.TopEdgeRightAlign;
}
}
return Latte.Types.BottomEdgeCenterAlign;
}
function increasePos() {
increasePosWithStep(scrollStep);
}
function decreasePos() {
decreasePosWithStep(scrollStep);
}
function increasePosWithStep(step) {
if (!root.vertical) {
contentX = Math.min(scrollLastPos, contentX + step);
} else {
contentY = Math.min(scrollLastPos, contentY + step);
}
}
function decreasePosWithStep(step) {
if (!root.vertical) {
contentX = Math.max(scrollFirstPos, contentX - step);
} else {
contentY = Math.max(scrollFirstPos, contentY - step);
}
}
function focusOn(task) {
if (!contentsExceed) {
return;
}
var cP = task.mapToItem(scrollableList, 0, 0);
var distance = 0;
if (!root.vertical) {
if (cP.x < 0) {
distance = Math.abs(cP.x - root.iconSize);
decreasePosWithStep(distance);
} else if ((cP.x+task.width) > scrollableList.width) {
distance = Math.abs(cP.x - scrollableList.width + task.width + root.iconSize);
increasePosWithStep(distance);
}
} else {
if (cP.y < 0) {
distance = Math.abs(cP.y - root.iconSize);
decreasePosWithStep(distance);
} else if ((cP.y+task.height) > scrollableList.height) {
distance = Math.abs(cP.y - scrollableList.height + task.height + root.iconSize);
increasePosWithStep(distance);
}
}
}
function autoScrollFor(task) {
//! It has TWO IN-QUESTION issues that may have been solved by the
//! initial checks
//! 1. when the user uses the mouse wheel at the first or the last task
//! the autoscrolling forcefully returns the view to boundaries
//! 2. when parabolic effect is activated the experience is not that smooth
//! at the view boundaries, parabolic effect AND autoscroll at the
//! boundaries create animation breakage
if (!root.autoScrollTasksEnabled || !contentsExceed || root.tasksCount < 3
|| (task.itemIndex===parabolicManager.lastRealTaskIndex && root.zoomFactor>1)) {
//last task with parabolic effect breaks the autoscolling behavior
return;
}
var cP = task.mapToItem(scrollableList, 0, 0);
if (!root.vertical) {
if (currentPos !== scrollFirstPos && cP.x < autoScrollTriggerLength) {
decreasePosWithStep(root.iconSize*1.5);
} else if (currentPos !== scrollLastPos && (cP.x+task.width > (scrollableList.width-autoScrollTriggerLength))) {
increasePosWithStep(root.iconSize*1.5);
}
} else {
if (currentPos !== scrollFirstPos && cP.y < autoScrollTriggerLength) {
decreasePosWithStep(root.iconSize*1.5);
} else if (currentPos !== scrollLastPos && (cP.y+task.height > (scrollableList.height-autoScrollTriggerLength))) {
increasePosWithStep(root.iconSize*1.5);
}
}
}
onContentsExtraSpaceChanged: {
if (!root.vertical) {
if (contentX < scrollFirstPos) {
contentX = scrollFirstPos;
} else if (contentX > scrollLastPos) {
contentX = scrollLastPos;
}
} else {
if (contentY < scrollFirstPos) {
contentY = scrollFirstPos;
} else if (contentY > scrollLastPos) {
contentY = scrollLastPos;
}
}
}
Behavior on contentX {
NumberAnimation {
id: horizontalAnimation
duration: root.durationTime*1.7*units.longDuration
easing.type: Easing.OutQuad
}
}
Behavior on contentY {
NumberAnimation {
id: verticalAnimation
duration: root.durationTime*1.7*units.longDuration
easing.type: Easing.OutQuad
}
}
//////////////////////////BEGIN states
//user set Panel Positions
// 0-Center, 1-Left, 2-Right, 3-Top, 4-Bottom
states: [
///Left Edge
State {
name: "leftCenter"
when: flickableContainer.alignment === Latte.Types.LeftEdgeCenterAlign
AnchorChanges {
target: flickableContainer
anchors{ top:undefined; bottom:undefined; left:parent.left; right:undefined; horizontalCenter:undefined; verticalCenter:parent.verticalCenter}
}
PropertyChanges{
target: flickableContainer;
anchors.leftMargin: 0; anchors.rightMargin:0; anchors.topMargin:0; anchors.bottomMargin:0;
anchors.horizontalCenterOffset: 0; anchors.verticalCenterOffset: flickableContainer.offset;
}
},
State {
name: "leftTop"
when: flickableContainer.alignment === Latte.Types.LeftEdgeTopAlign
AnchorChanges {
target: flickableContainer
anchors{ top:parent.top; bottom:undefined; left:parent.left; right:undefined; horizontalCenter:undefined; verticalCenter:undefined}
}
PropertyChanges{
target: flickableContainer;
anchors.leftMargin: 0; anchors.rightMargin:0; anchors.topMargin:flickableContainer.offset; anchors.bottomMargin:flickableContainer.lastMargin;
anchors.horizontalCenterOffset: 0; anchors.verticalCenterOffset: 0;
}
},
State {
name: "leftBottom"
when: flickableContainer.alignment === Latte.Types.LeftEdgeBottomAlign
AnchorChanges {
target: flickableContainer
anchors{ top:undefined; bottom:parent.bottom; left:parent.left; right:undefined; horizontalCenter:undefined; verticalCenter:undefined}
}
PropertyChanges{
target: flickableContainer;
anchors.leftMargin: 0; anchors.rightMargin:0; anchors.topMargin:flickableContainer.lastMargin; anchors.bottomMargin:flickableContainer.offset;
anchors.horizontalCenterOffset: 0; anchors.verticalCenterOffset: 0;
}
},
///Right Edge
State {
name: "rightCenter"
when: flickableContainer.alignment === Latte.Types.RightEdgeCenterAlign
AnchorChanges {
target: flickableContainer
anchors{ top:undefined; bottom:undefined; left:undefined; right:parent.right; horizontalCenter:undefined; verticalCenter:parent.verticalCenter}
}
PropertyChanges{
target: flickableContainer;
anchors.leftMargin: 0; anchors.rightMargin:0; anchors.topMargin:0; anchors.bottomMargin:0;
anchors.horizontalCenterOffset: 0; anchors.verticalCenterOffset: flickableContainer.offset;
}
},
State {
name: "rightTop"
when: flickableContainer.alignment === Latte.Types.RightEdgeTopAlign
AnchorChanges {
target: flickableContainer
anchors{ top:parent.top; bottom:undefined; left:undefined; right:parent.right; horizontalCenter:undefined; verticalCenter:undefined}
}
PropertyChanges{
target: flickableContainer;
anchors.leftMargin: 0; anchors.rightMargin:0; anchors.topMargin:flickableContainer.offset; anchors.bottomMargin:flickableContainer.lastMargin;
anchors.horizontalCenterOffset: 0; anchors.verticalCenterOffset: 0;
}
},
State {
name: "rightBottom"
when: flickableContainer.alignment === Latte.Types.RightEdgeBottomAlign
AnchorChanges {
target: flickableContainer
anchors{ top:undefined; bottom:parent.bottom; left:undefined; right:parent.right; horizontalCenter:undefined; verticalCenter:undefined}
}
PropertyChanges{
target: flickableContainer;
anchors.leftMargin: 0; anchors.rightMargin:0; anchors.topMargin:flickableContainer.lastMargin; anchors.bottomMargin:flickableContainer.offset;
anchors.horizontalCenterOffset: 0; anchors.verticalCenterOffset: 0;
}
},
///Bottom Edge
State {
name: "bottomCenter"
when: flickableContainer.alignment === Latte.Types.BottomEdgeCenterAlign
AnchorChanges {
target: flickableContainer
anchors{ top:undefined; bottom:parent.bottom; left:undefined; right:undefined; horizontalCenter:parent.horizontalCenter; verticalCenter:undefined}
}
PropertyChanges{
target: flickableContainer;
anchors.leftMargin: 0; anchors.rightMargin:0; anchors.topMargin:0; anchors.bottomMargin:0;
anchors.horizontalCenterOffset: flickableContainer.offset; anchors.verticalCenterOffset: 0;
}
},
State {
name: "bottomLeft"
when: flickableContainer.alignment === Latte.Types.BottomEdgeLeftAlign
AnchorChanges {
target: flickableContainer
anchors{ top:undefined; bottom:parent.bottom; left:parent.left; right:undefined; horizontalCenter:undefined; verticalCenter:undefined}
}
PropertyChanges{
target: flickableContainer;
anchors.leftMargin: flickableContainer.offset; anchors.rightMargin:flickableContainer.lastMargin; anchors.topMargin:0; anchors.bottomMargin:0;
anchors.horizontalCenterOffset: 0; anchors.verticalCenterOffset: 0;
}
},
State {
name: "bottomRight"
when: flickableContainer.alignment === Latte.Types.BottomEdgeRightAlign
AnchorChanges {
target: flickableContainer
anchors{ top:undefined; bottom:parent.bottom; left:undefined; right:parent.right; horizontalCenter:undefined; verticalCenter:undefined}
}
PropertyChanges{
target: flickableContainer;
anchors.leftMargin: flickableContainer.lastMargin; anchors.rightMargin:flickableContainer.offset; anchors.topMargin:0; anchors.bottomMargin:0;
anchors.horizontalCenterOffset: 0; anchors.verticalCenterOffset: 0;
}
},
///Top Edge
State {
name: "topCenter"
when: flickableContainer.alignment === Latte.Types.TopEdgeCenterAlign
AnchorChanges {
target: flickableContainer
anchors{ top:parent.top; bottom:undefined; left:undefined; right:undefined; horizontalCenter:parent.horizontalCenter; verticalCenter:undefined}
}
PropertyChanges{
target: flickableContainer;
anchors.leftMargin: 0; anchors.rightMargin:0; anchors.topMargin:0; anchors.bottomMargin:0;
anchors.horizontalCenterOffset: flickableContainer.offset; anchors.verticalCenterOffset: 0;
}
},
State {
name: "topLeft"
when: flickableContainer.alignment === Latte.Types.TopEdgeLeftAlign
AnchorChanges {
target: flickableContainer
anchors{ top:parent.top; bottom:undefined; left:parent.left; right:undefined; horizontalCenter:undefined; verticalCenter:undefined}
}
PropertyChanges{
target: flickableContainer;
anchors.leftMargin: flickableContainer.offset; anchors.rightMargin:flickableContainer.lastMargin; anchors.topMargin:0; anchors.bottomMargin:0;
anchors.horizontalCenterOffset: 0; anchors.verticalCenterOffset: 0;
}
},
State {
name: "topRight"
when: flickableContainer.alignment === Latte.Types.TopEdgeRightAlign
AnchorChanges {
target: flickableContainer
anchors{ top:parent.top; bottom:undefined; left:undefined; right:parent.right; horizontalCenter:undefined; verticalCenter:undefined}
}
PropertyChanges{
target: flickableContainer;
anchors.leftMargin: flickableContainer.lastMargin; anchors.rightMargin:flickableContainer.offset; anchors.topMargin:0; anchors.bottomMargin:0;
anchors.horizontalCenterOffset: 0; anchors.verticalCenterOffset: 0;
}
}
]
}