1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
import QtQuick 2.14
import Qt.labs.animation 1.0
import "content"
Rectangle {
id: root
width: 1024; height: 600
color: "#eee"
CheckBox {
id: cbTouchpadEnabled
x: 10; y: 6
label: "Touchpad wheel emulation enabled"
}
CheckBox {
id: cbHorzWheelEnabled
x: cbTouchpadEnabled.width + 20; y: 6
label: "Horizontal wheel rotation"
}
function getTransformationDetails(item, pinchhandler) {
return "\n\npinch.scale:" + pinchhandler.scale.toFixed(2)
+ "\npinch.rotation:" + pinchhandler.rotation.toFixed(2)
+ "°\npinch.activeTranslation:" + "(" + pinchhandler.activeTranslation.x.toFixed(2) + "," + pinchhandler.activeTranslation.y.toFixed(2) + ")"
+ "\npinch.persistentTranslation:" + "(" + pinchhandler.persistentTranslation.x.toFixed(2) + "," + pinchhandler.persistentTranslation.y.toFixed(2) + ")"
+ " item pos " + "(" + transformable.x.toFixed(2) + "," + transformable.y.toFixed(2) + ")"
+ "\nscale wheel.rotation:" + scaleWheelHandler.rotation.toFixed(2)
+ "°\nhorizontal wheel.rotation:" + horizontalRotationWheelHandler.rotation.toFixed(2)
+ "°\ncontrol-rotation wheel.rotation:" + controlRotationWheelHandler.rotation.toFixed(2)
+ "°\nrect.scale: " + item.scale.toFixed(2)
+ "\nrect.rotation: " + item.rotation.toFixed(2)
+ "°\nrect.position: " + "(" + item.x.toFixed(2) + "," + item.y.toFixed(2) + ")"
}
Rectangle {
id: transformable
width: parent.width - 100; height: parent.height - 100; x: 50; y: 50
color: "#ffe0e0e0"
antialiasing: true
PinchHandler {
id: parentPinch
objectName: "parent pinch"
minimumScale: 0.5
maximumScale: 3
}
WheelHandler {
id: scaleWheelHandler
objectName: "mouse wheel for scaling"
acceptedDevices: cbTouchpadEnabled.checked ? PointerDevice.Mouse | PointerDevice.TouchPad : PointerDevice.Mouse
acceptedModifiers: Qt.NoModifier
property: "scale"
onActiveChanged: if (!active) sbr.returnToBounds();
onWheel: console.log(objectName + ": rotation " + event.angleDelta.y + " scaled " + rotation + " @ " + point.position + " => " + parent.scale)
}
BoundaryRule on scale {
id: sbr
minimum: 0.1
maximum: 2
minimumOvershoot: 0.05
maximumOvershoot: 0.05
}
BoundaryRule on rotation {
id: rbr
minimum: -90
maximum: 360
minimumOvershoot: 10
maximumOvershoot: 10
}
WheelHandler {
id: horizontalRotationWheelHandler
enabled: cbHorzWheelEnabled.checked
objectName: "horizontal mouse wheel for rotation"
acceptedDevices: cbTouchpadEnabled.checked ? PointerDevice.Mouse | PointerDevice.TouchPad : PointerDevice.Mouse
acceptedModifiers: Qt.NoModifier
property: "rotation"
orientation: Qt.Horizontal
onActiveChanged: if (!active) rbr.returnToBounds()
onWheel: console.log(objectName + ": rotation " + event.angleDelta.y + " scaled " + rotation + " @ " + point.position + " => " + parent.rotation)
}
WheelHandler {
id: controlRotationWheelHandler
objectName: "control-mouse wheel for rotation"
acceptedDevices: cbTouchpadEnabled.checked ? PointerDevice.Mouse | PointerDevice.TouchPad : PointerDevice.Mouse
acceptedModifiers: Qt.ControlModifier
property: "rotation"
orientation: Qt.Vertical // already the default
// TODO returnToBounds() causes trouble because position isn't being adjusted when this happens
onActiveChanged: if (!active) rbr.returnToBounds()
onWheel: console.log(objectName + ": rotation " + event.angleDelta.y + " scaled " + rotation + " @ " + point.position + " => " + parent.rotation)
}
HoverHandler {
id: hover
acceptedDevices: PointerDevice.AllDevices
property var scenePoint: transformable.mapToItem(root, point.position.x, point.position.y)
}
Text {
text: "Pinch with 2 fingers to scale, rotate and translate\nMouse wheel to scale, Ctrl+mouse wheel or horizontal wheel to rotate"
+ getTransformationDetails(parent, parentPinch)
}
}
Rectangle {
width: 1; height: parent.height
color: "blue"
x: hover.scenePoint.x
Text {
x: implicitWidth / -2; style: Text.Outline; styleColor: "white"
y: 30
color: "blue"
text: "outer " + parent.x.toFixed(2) + " inner " + hover.point.position.x.toFixed(2)
}
}
Rectangle {
width: parent.width; height: 1
color: "blue"
y: hover.scenePoint.y
Text {
x: 45
y: implicitHeight / -2; style: Text.Outline; styleColor: "white"
color: "blue"
text: "outer " + parent.y.toFixed(2) + " inner " + hover.point.position.y.toFixed(2)
}
}
}
|
