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
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
|
/*
* Copyright (C) 2014 Canonical, Ltd.
*
* 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; version 3.
*
* 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/>.
*/
/*
Example:
MainView {
objectName: "mainView"
applicationName: "com.ubuntu.developer.boiko.bottomedge"
width: units.gu(100)
height: units.gu(75)
Component {
id: pageComponent
PageWithBottomEdge {
id: mainPage
title: i18n.tr("Main Page")
Rectangle {
anchors.fill: parent
color: "white"
}
bottomEdgePageComponent: Page {
title: "Contents"
anchors.fill: parent
//anchors.topMargin: contentsPage.flickable.contentY
ListView {
anchors.fill: parent
model: 50
delegate: ListItems.Standard {
text: "One Content Item: " + index
}
}
}
bottomEdgeTitle: i18n.tr("Bottom edge action")
}
}
PageStack {
id: stack
Component.onCompleted: stack.push(pageComponent)
}
}
*/
import QtQuick 2.2
import Ubuntu.Components 1.1
Page {
id: page
property alias bottomEdgePageComponent: edgeLoader.sourceComponent
property alias bottomEdgePageSource: edgeLoader.source
property alias bottomEdgeTitle: tipLabel.text
property bool bottomEdgeEnabled: true
property int bottomEdgeExpandThreshold: page.height * 0.2
property int bottomEdgeExposedArea: bottomEdge.state !== "expanded" ? (page.height - bottomEdge.y - bottomEdge.tipHeight) : _areaWhenExpanded
property bool reloadBottomEdgePage: true
readonly property alias bottomEdgePage: edgeLoader.item
readonly property bool isReady: ((bottomEdge.y === 0) && bottomEdgePageLoaded && edgeLoader.item.active)
readonly property bool isCollapsed: (bottomEdge.y === page.height)
readonly property bool bottomEdgePageLoaded: (edgeLoader.status == Loader.Ready)
property bool _showEdgePageWhenReady: false
property int _areaWhenExpanded: 0
signal bottomEdgeReleased()
signal bottomEdgeDismissed()
function showBottomEdgePage(source, properties)
{
edgeLoader.setSource(source, properties)
_showEdgePageWhenReady = true
}
function setBottomEdgePage(source, properties)
{
edgeLoader.setSource(source, properties)
}
function _pushPage()
{
if (edgeLoader.status === Loader.Ready) {
edgeLoader.item.active = true
page.pageStack.push(edgeLoader.item)
if (edgeLoader.item.flickable) {
edgeLoader.item.flickable.contentY = -page.header.height
edgeLoader.item.flickable.returnToBounds()
}
if (edgeLoader.item.ready)
edgeLoader.item.ready()
}
}
Component.onCompleted: {
// avoid a binding on the expanded height value
var expandedHeight = height;
_areaWhenExpanded = expandedHeight;
}
onActiveChanged: {
if (active) {
bottomEdge.state = "collapsed"
}
}
onBottomEdgePageLoadedChanged: {
if (_showEdgePageWhenReady && bottomEdgePageLoaded) {
bottomEdge.state = "expanded"
_showEdgePageWhenReady = false
}
}
Rectangle {
id: bgVisual
color: "black"
anchors.fill: page
opacity: 0.7 * ((page.height - bottomEdge.y) / page.height)
z: 1
}
UbuntuShape {
id: tip
objectName: "bottomEdgeTip"
property bool hidden: (activeFocus === false) || ((bottomEdge.y - units.gu(1)) < tip.y)
enabled: mouseArea.enabled
visible: page.bottomEdgeEnabled
anchors {
bottom: parent.bottom
horizontalCenter: bottomEdge.horizontalCenter
bottomMargin: hidden ? - height + units.gu(1) : -units.gu(1)
Behavior on bottomMargin {
SequentialAnimation {
// wait some msecs in case of the focus change again, to avoid flickering
PauseAnimation {
duration: 300
}
UbuntuNumberAnimation {
duration: UbuntuAnimation.SnapDuration
}
}
}
}
z: 1
width: tipLabel.paintedWidth + units.gu(6)
height: bottomEdge.tipHeight + units.gu(1)
color: Theme.palette.normal.overlay
Label {
id: tipLabel
anchors {
top: parent.top
left: parent.left
right: parent.right
}
height: bottomEdge.tipHeight
verticalAlignment: Text.AlignVCenter
horizontalAlignment: Text.AlignHCenter
opacity: tip.hidden ? 0.0 : 1.0
Behavior on opacity {
UbuntuNumberAnimation {
duration: UbuntuAnimation.SnapDuration
}
}
}
}
Rectangle {
id: shadow
anchors {
left: parent.left
right: parent.right
bottom: parent.bottom
}
height: units.gu(1)
z: 1
opacity: 0.0
gradient: Gradient {
GradientStop { position: 0.0; color: "transparent" }
GradientStop { position: 1.0; color: Qt.rgba(0, 0, 0, 0.2) }
}
}
MouseArea {
id: mouseArea
property real previousY: -1
property string dragDirection: "None"
preventStealing: true
drag {
axis: Drag.YAxis
target: bottomEdge
minimumY: bottomEdge.pageStartY
maximumY: page.height
}
enabled: edgeLoader.status == Loader.Ready
visible: page.bottomEdgeEnabled
anchors {
left: parent.left
right: parent.right
bottom: parent.bottom
}
height: bottomEdge.tipHeight
z: 1
onReleased: {
page.bottomEdgeReleased()
if ((dragDirection === "BottomToTop") &&
bottomEdge.y < (page.height - bottomEdgeExpandThreshold - bottomEdge.tipHeight)) {
bottomEdge.state = "expanded"
} else {
bottomEdge.state = "collapsed"
}
previousY = -1
dragDirection = "None"
}
onPressed: {
previousY = mouse.y
tip.forceActiveFocus()
}
onMouseYChanged: {
var yOffset = previousY - mouseY
// skip if was a small move
if (Math.abs(yOffset) <= units.gu(2)) {
return
}
previousY = mouseY
dragDirection = yOffset > 0 ? "BottomToTop" : "TopToBottom"
}
}
Rectangle {
id: bottomEdge
objectName: "bottomEdge"
readonly property int tipHeight: units.gu(3)
readonly property int pageStartY: 0
z: 1
color: Theme.palette.normal.background
clip: true
anchors {
left: parent.left
right: parent.right
}
height: page.height
y: height
visible: !page.isCollapsed
state: "collapsed"
states: [
State {
name: "collapsed"
PropertyChanges {
target: bottomEdge
y: bottomEdge.height
}
},
State {
name: "expanded"
PropertyChanges {
target: bottomEdge
y: bottomEdge.pageStartY
}
},
State {
name: "floating"
when: mouseArea.drag.active
PropertyChanges {
target: shadow
opacity: 1.0
}
}
]
transitions: [
Transition {
to: "expanded"
SequentialAnimation {
alwaysRunToEnd: true
SmoothedAnimation {
target: bottomEdge
property: "y"
duration: UbuntuAnimation.FastDuration
easing.type: Easing.Linear
}
SmoothedAnimation {
target: edgeLoader
property: "anchors.topMargin"
to: - units.gu(4)
duration: UbuntuAnimation.FastDuration
easing.type: Easing.Linear
}
SmoothedAnimation {
target: edgeLoader
property: "anchors.topMargin"
to: 0
duration: UbuntuAnimation.FastDuration
easing: UbuntuAnimation.StandardEasing
}
ScriptAction {
script: page._pushPage()
}
}
},
Transition {
from: "expanded"
to: "collapsed"
SequentialAnimation {
alwaysRunToEnd: true
ScriptAction {
script: {
Qt.inputMethod.hide()
edgeLoader.item.parent = edgeLoader
edgeLoader.item.anchors.fill = edgeLoader
edgeLoader.item.active = false
}
}
SmoothedAnimation {
target: bottomEdge
property: "y"
duration: UbuntuAnimation.SlowDuration
}
ScriptAction {
script: {
// destroy current bottom page
if (page.reloadBottomEdgePage) {
edgeLoader.active = false
// tip will receive focus on page active true
} else {
tip.forceActiveFocus()
}
// notify
page.bottomEdgeDismissed()
edgeLoader.active = true
}
}
}
},
Transition {
from: "floating"
to: "collapsed"
SmoothedAnimation {
target: bottomEdge
property: "y"
duration: UbuntuAnimation.FastDuration
}
}
]
Loader {
id: edgeLoader
asynchronous: true
anchors.fill: parent
//WORKAROUND: The SDK move the page contents down to allocate space for the header we need to avoid that during the page dragging
Binding {
target: edgeLoader.status === Loader.Ready ? edgeLoader : null
property: "anchors.topMargin"
value: edgeLoader.item && edgeLoader.item.flickable ? edgeLoader.item.flickable.contentY : 0
when: !page.isReady
}
onLoaded: {
tip.forceActiveFocus()
if (page.isReady && edgeLoader.item.active !== true) {
page._pushPage()
}
}
}
}
}
|