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
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Quick Controls module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
** of its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
import QtQuick 2.2
import QtQuick.Controls 1.2
Item {
id: content
property Component menuItemDelegate
property Component scrollIndicatorStyle
property Component scrollerStyle
property var itemsModel
property int minWidth: 100
property real maxHeight: 800
readonly property bool mousePressed: hoverArea.pressed
signal triggered(var item)
function menuItemAt(index) {
list.currentIndex = index
return list.currentItem
}
width: Math.max(list.contentWidth, minWidth)
height: Math.min(list.contentHeight, fittedMaxHeight)
readonly property int currentIndex: __menu.__currentIndex
property Item currentItem: null
property int itemHeight: 23
Component.onCompleted: {
var children = list.contentItem.children
for (var i = 0; i < list.count; i++) {
var child = children[i]
if (child.visible && child.styleData.type === MenuItemType.Item) {
itemHeight = children[i].height
break
}
}
}
readonly property int fittingItems: Math.floor((maxHeight - downScroller.height) / itemHeight)
readonly property real fittedMaxHeight: itemHeight * fittingItems + downScroller.height
readonly property bool shouldUseScrollers: scrollView.style === emptyScrollerStyle && itemsModel.length > fittingItems
readonly property real upScrollerHeight: upScroller.visible ? upScroller.height : 0
readonly property real downScrollerHeight: downScroller.visible ? downScroller.height : 0
property var oldMousePos: undefined
property var openedSubmenu: null
function updateCurrentItem(mouse) {
var pos = mapToItem(list.contentItem, mouse.x, mouse.y)
var dx = 0
var dy = 0
var dist = 0
if (openedSubmenu && oldMousePos !== undefined) {
dx = mouse.x - oldMousePos.x
dy = mouse.y - oldMousePos.y
dist = Math.sqrt(dx * dx + dy * dy)
}
oldMousePos = mouse
if (openedSubmenu && dist > 5) {
var menuRect = __menu.__popupGeometry
var submenuRect = openedSubmenu.__popupGeometry
var angle = Math.atan2(dy, dx)
var ds = 0
if (submenuRect.x > menuRect.x) {
ds = menuRect.width - oldMousePos.x
} else {
angle = Math.PI - angle
ds = oldMousePos.x
}
var above = submenuRect.y - menuRect.y - oldMousePos.y
var below = submenuRect.height - above
var minAngle = Math.atan2(above, ds)
var maxAngle = Math.atan2(below, ds)
// This tests that the current mouse position is in
// the triangle defined by the previous mouse position
// and the submenu's top-left and bottom-left corners.
if (minAngle < angle && angle < maxAngle) {
sloppyTimer.start()
return
}
}
if (!currentItem || !currentItem.contains(Qt.point(pos.x - currentItem.x, pos.y - currentItem.y))) {
if (currentItem && !hoverArea.pressed
&& currentItem.styleData.type === MenuItemType.Menu) {
currentItem.__closeSubMenu()
openedSubmenu = null
}
currentItem = list.itemAt(pos.x, pos.y)
if (currentItem) {
__menu.__currentIndex = currentItem.__menuItemIndex
if (currentItem.styleData.type === MenuItemType.Menu
&& !currentItem.__menuItem.__popupVisible) {
currentItem.__showSubMenu(false)
openedSubmenu = currentItem.__menuItem
}
} else {
__menu.__currentIndex = -1
}
}
}
Timer {
id: sloppyTimer
interval: 1000
// Stop timer as soon as we hover one of the submenu items
property int currentIndex: openedSubmenu ? openedSubmenu.__currentIndex : -1
onCurrentIndexChanged: if (currentIndex !== -1) stop()
onTriggered: {
if (openedSubmenu && openedSubmenu.__currentIndex === -1)
updateCurrentItem(oldMousePos)
}
}
Component {
id: emptyScrollerStyle
Style {
padding { left: 0; right: 0; top: 0; bottom: 0 }
property bool scrollToClickedPosition: false
property Component frame: Item { visible: false }
property Component corner: Item { visible: false }
property Component __scrollbar: Item { visible: false }
}
}
ScrollView {
id: scrollView
anchors {
fill: parent
topMargin: upScrollerHeight
bottomMargin: downScrollerHeight
}
style: scrollerStyle || emptyScrollerStyle
__wheelAreaScrollSpeed: itemHeight
ListView {
id: list
model: itemsModel
delegate: menuItemDelegate
snapMode: ListView.SnapToItem
boundsBehavior: Flickable.StopAtBounds
highlightFollowsCurrentItem: true
highlightMoveDuration: 0
}
}
MouseArea {
id: hoverArea
anchors.left: scrollView.left
width: scrollView.width - scrollView.__verticalScrollBar.width
height: parent.height
hoverEnabled: true
acceptedButtons: Qt.AllButtons
onPositionChanged: updateCurrentItem({ "x": mouse.x, "y": mouse.y })
onPressed: updateCurrentItem({ "x": mouse.x, "y": mouse.y })
onReleased: content.triggered(currentItem)
onExited: {
if (currentItem && !currentItem.__menuItem.__popupVisible) {
currentItem = null
__menu.__currentIndex = -1
}
}
MenuContentScroller {
id: upScroller
direction: Qt.UpArrow
visible: shouldUseScrollers && !list.atYBeginning
function scrollABit() { list.contentY -= itemHeight }
}
MenuContentScroller {
id: downScroller
direction: Qt.DownArrow
visible: shouldUseScrollers && !list.atYEnd
function scrollABit() { list.contentY += itemHeight }
}
}
Timer {
interval: 1
running: true
repeat: false
onTriggered: list.positionViewAtIndex(currentIndex, !scrollView.__style
? ListView.Center : ListView.Beginning)
}
Binding {
target: scrollView.__verticalScrollBar
property: "singleStep"
value: itemHeight
}
}
|
