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// Copyright (C) 2024 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
import QtQuick
import QtQuick.Controls
import QtUniversalInput
ApplicationWindow {
id: mainWindow
visible: true
width: 800
height: 400
title: "Mousegrab"
Rectangle {
id: gameArea
width: parent.width
height: parent.height
color: "gray"
Rectangle {
id: player
width: 10
height: 10
color: "red"
Component.onCompleted: {
resetPosition()
}
function resetPosition() {
x = parent.width / 2 - width / 2
y = parent.height / 2 - height / 2
}
function move(amount) {
x += amount.x
y += amount.y
}
}
Keys.onPressed: event => {
if (event.key === Qt.Key_Escape) {
gameArea.focus = false
}
}
onFocusChanged: {
universalInput.mouseDisabled = focus
if (focus) {
player.resetPosition()
universalInput.firstFramesAfterFocus = true
}
}
MouseArea {
anchors.fill: parent
onPressed: {
gameArea.focus = true
}
}
Label {
x: 10
y: 10
text: "Press ESC to release mouse"
}
Label {
x: 10
y: 30
text: "Click to grab mouse"
}
Label {
id: deltaLabel
x: 10
y: 50
text: "Mouse deltas: (0,0)"
}
}
UniversalInput {
id: universalInput
mouseDisabled: gameArea.focus
property bool firstFramesAfterFocus: false
property int frameCount: 0
onMouseDeltaChanged: delta => {
deltaLabel.text = "Mouse deltas: (" + delta.x + "," + delta.y + ")"
if (mouseDisabled) {
// Big delta after focus is received, so delay the action
if (firstFramesAfterFocus) {
if (frameCount < 1) {
++frameCount
return
}
frameCount = 0
firstFramesAfterFocus = false
return
}
player.move(delta)
}
}
}
}
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