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taskswitcher: implement left/right swipe gesture

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This commit is contained in:
Yari Polla 2022-05-03 01:38:42 +02:00
parent 26aaa808b0
commit fc300d1a28
2 changed files with 28 additions and 26 deletions
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32
components/mobileshell/qml/navigationpanel/NavigationGestureArea.qml
View file

@ -21,11 +21,10 @@ Item {
id: root
property var taskSwitcher
MouseArea {
id: mouseArea
anchors.fill: parent
drag.filterChildren: true
// drag gesture
property int oldMouseY: 0
@ -33,37 +32,36 @@ Item {
property int oldMouseX: 0
property int startMouseX: 0
property bool opening: false
enabled: !taskSwitcher.visible
onPressed: {
startMouseX = oldMouseX = mouse.y;
startMouseX = oldMouseX = mouse.x;
startMouseY = oldMouseY = mouse.y;
}
onPositionChanged: {
if (!opening && Math.abs(startMouseY - oldMouseY) < root.height) {
oldMouseY = mouse.y;
return;
} else if (mouseArea.pressed) {
opening = true;
}
if (root.taskSwitcher.visible) {
onPositionChanged: {
if (root.taskSwitcher.visible || taskSwitcher.taskSwitcherState.currentlyBeingOpened) {
// update task switcher drag
let offsetY = (mouse.y - oldMouseY) * 0.5; // we want to make the gesture take a longer swipe than it being pixel perfect
let offsetX = (mouse.x - oldMouseX) * 0.7; // we want to make the gesture not too hard to swipe, but not too easy
taskSwitcher.taskSwitcherState.yPosition = Math.max(0, taskSwitcher.taskSwitcherState.yPosition - offsetY);
taskSwitcher.taskSwitcherState.xPosition -= offsetX;
taskSwitcher.taskSwitcherState.xPosition = taskSwitcher.taskSwitcherState.xPosition - offsetX;
}
if (!root.taskSwitcher.visible && Math.abs(startMouseY - mouse.y) > PlasmaCore.Units.gridUnit && taskSwitcher.tasksCount) {
// start task switcher gesture
if (!root.taskSwitcher.visible && Math.abs(startMouseX - mouse.x) > PlasmaCore.Units.gridUnit && taskSwitcher.tasksCount && taskSwitcher.tasksModel.activeTask.row >= 0){
// start switch task gesture
taskSwitcher.taskSwitcherState.scrollingTasks = true;
root.taskSwitcher.show(false);
} else if (!root.taskSwitcher.visible && Math.abs(startMouseY - mouse.y) > PlasmaCore.Units.gridUnit && taskSwitcher.tasksCount) {
// start task switcher opening gesture
root.taskSwitcher.show(false);
}
oldMouseY = mouse.y;
oldMouseX = mouse.x;
}
onReleased: {
if (taskSwitcher.taskSwitcherState.currentlyBeingOpened) {
taskSwitcher.taskSwitcherState.updateState();

22
components/mobileshell/qml/taskswitcher/TaskSwitcherState.qml
View file

@ -62,6 +62,9 @@ QtObject {
// whether we are in a swipe up gesture to open the task switcher
property bool currentlyBeingOpened: false
// whether we are in a swipe left/right gesture to walk through tasks
property bool scrollingTasks: false
readonly property int currentTaskIndex: {
let candidateIndex = Math.round(-xPosition / (taskSpacing + taskWidth));
return Math.max(0, Math.min(taskSwitcher.tasksCount - 1, candidateIndex));
@ -107,10 +110,10 @@ QtObject {
let finalScale = Math.max(0, Math.min(maxScale, maxScale - subtract));
// animate scale only if we are *not* opening from the homescreen
if (wasInActiveTask || !currentlyBeingOpened) {
if ((wasInActiveTask || !currentlyBeingOpened) && !scrollingTasks) {
return finalScale;
}
return 1;
return scrollingTasks ? maxScale : 1;
}
// ~~ signals and functions ~~
@ -159,7 +162,7 @@ QtObject {
cancelAnimations();
// update vertical state
if (movingUp || root.yPosition >= openedYPosition) {
if ((movingUp || root.yPosition >= openedYPosition) && !scrollingTasks) {
// open task switcher and stay
openAnim.restart();
} else {
@ -197,20 +200,20 @@ QtObject {
easing.type: Easing.OutBack
}
property var openAnim: NumberAnimation {
property var openAnim: NumberAnimation {
target: root
property: "yPosition"
to: openedYPosition
to: openedYPosition
duration: MobileShell.MobileShellSettings.animationsEnabled ? 300 : 0
easing.type: Easing.OutBack
easing.type: Easing.OutBack
onFinished: {
root.currentlyBeingOpened = false;
}
}
property var closeAnim: NumberAnimation {
target: root
target: root
property: "yPosition"
to: 0
duration: MobileShell.MobileShellSettings.animationsEnabled ? PlasmaCore.Units.longDuration : 0
@ -218,8 +221,9 @@ QtObject {
onFinished: {
root.currentlyBeingOpened = false;
scrollingTasks = false;
taskSwitcher.instantHide();
if (root.wasInActiveTask) {
taskSwitcher.setSingleActiveWindow(root.currentTaskIndex);
}