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
|
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
import Qt 4.7
Rectangle {
id: editor
color: "lightGrey"
width: 640; height: 480
Rectangle {
color: "white"
anchors.fill: parent
anchors.margins: 20
BorderImage {
id: startHandle
source: "pics/startHandle.sci"
opacity: 0.0
width: 10
x: edit.positionToRectangle(edit.selectionStart).x-flick.contentX-width
y: edit.positionToRectangle(edit.selectionStart).y-flick.contentY
height: edit.positionToRectangle(edit.selectionStart).height
}
BorderImage {
id: endHandle
source: "pics/endHandle.sci"
opacity: 0.0
width: 10
x: edit.positionToRectangle(edit.selectionEnd).x-flick.contentX
y: edit.positionToRectangle(edit.selectionEnd).y-flick.contentY
height: edit.positionToRectangle(edit.selectionEnd).height
}
Flickable {
id: flick
anchors.fill: parent
contentWidth: edit.paintedWidth
contentHeight: edit.paintedHeight
interactive: true
clip: true
function ensureVisible(r)
{
if (contentX >= r.x)
contentX = r.x;
else if (contentX+width <= r.x+r.width)
contentX = r.x+r.width-width;
if (contentY >= r.y)
contentY = r.y;
else if (contentY+height <= r.y+r.height)
contentY = r.y+r.height-height;
}
TextEdit {
id: edit
width: flick.width
height: flick.height
focus: true
wrapMode: TextEdit.Wrap
onCursorRectangleChanged: flick.ensureVisible(cursorRectangle)
text: "<h1>Text Selection</h1>"
+"<p>This example is a whacky text selection mechanisms, showing how these can be implemented in the TextEdit element, to cater for whatever style is appropriate for the target platform."
+"<p><b>Press-and-hold</b> to select a word, then drag the selection handles."
+"<p><b>Drag outside the selection</b> to scroll the text."
+"<p><b>Click inside the selection</b> to cut/copy/paste/cancel selection."
+"<p>It's too whacky to let you paste if there is no current selection."
MouseArea {
x: -startHandle.width
y: 0
width: parent.width+startHandle.width+endHandle.width
height: parent.height
property string drag: "";
property int pressPos;
onPressAndHold: {
if (editor.state == "") {
edit.cursorPosition = edit.positionAt(mouse.x+x,mouse.y+y);
edit.selectWord();
editor.state = "selection"
}
}
onClicked: {
if (editor.state == "") {
edit.cursorPosition = edit.positionAt(mouse.x+x,mouse.y+y);
}
}
function hitHandle(h,x,y) { return x>=h.x+flick.contentX && x<h.x+flick.contentX+h.width && y>=h.y+flick.contentY && y<h.y+flick.contentY+h.height }
onPressed: {
if (editor.state == "selection") {
if (hitHandle(startHandle,mouse.x+x,mouse.y+y)) {
drag = "start"
flick.interactive = false
} else if (hitHandle(endHandle,mouse.x+x,mouse.y+y)) {
drag = "end"
flick.interactive = false
} else {
var pos = edit.positionAt(mouse.x+x,mouse.y+y);
if (pos >= edit.selectionStart && pos <= edit.selectionEnd) {
drag = "selection"
flick.interactive = false
} else {
drag = ""
flick.interactive = true
}
}
}
}
onReleased: {
if (editor.state == "selection") {
if (drag == "selection") {
editor.state = "menu"
}
drag = ""
}
flick.interactive = true
}
onPositionChanged: {
if (editor.state == "selection" && drag != "") {
if (drag == "start") {
var pos = edit.positionAt(mouse.x+x+startHandle.width/2,mouse.y+y);
var e = edit.selectionEnd;
if (e < pos)
e = pos;
edit.select(pos,e);
} else if (drag == "end") {
var pos = edit.positionAt(mouse.x+x-endHandle.width/2,mouse.y+y);
var s = edit.selectionStart;
if (s > pos)
s = pos;
edit.select(s,pos);
}
}
}
}
}
}
Item {
id: menu
opacity: 0.0
width: 100
height: 120
anchors.centerIn: parent
Rectangle {
border.width: 1
border.color: "darkBlue"
radius: 15
color: "#806080FF"
anchors.fill: parent
}
Column {
anchors.centerIn: parent
spacing: 8
Rectangle {
border.width: 1
border.color: "darkBlue"
color: "#ff7090FF"
width: 60
height: 16
Text { anchors.centerIn: parent; text: "Cut" }
MouseArea { anchors.fill: parent;
onClicked: { edit.cut(); editor.state = "" } }
}
Rectangle {
border.width: 1
border.color: "darkBlue"
color: "#ff7090FF"
width: 60
height: 16
Text { anchors.centerIn: parent; text: "Copy" }
MouseArea { anchors.fill: parent;
onClicked: { edit.copy(); editor.state = "selection" } }
}
Rectangle {
border.width: 1
border.color: "darkBlue"
color: "#ff7090FF"
width: 60
height: 16
Text { anchors.centerIn: parent; text: "Paste" }
MouseArea { anchors.fill: parent;
onClicked: { edit.paste(); edit.cursorPosition = edit.selectionEnd; editor.state = "" } }
}
Rectangle {
border.width: 1
border.color: "darkBlue"
color: "#ff7090FF"
width: 60
height: 16
Text { anchors.centerIn: parent; text: "Deselect" }
MouseArea { anchors.fill: parent;
onClicked: { edit.cursorPosition = edit.selectionEnd; edit.select(edit.cursorPosition,edit.cursorPosition); editor.state = "" } }
}
}
}
}
states: [
State {
name: "selection"
PropertyChanges { target: startHandle; opacity: 1.0 }
PropertyChanges { target: endHandle; opacity: 1.0 }
},
State {
name: "menu"
PropertyChanges { target: startHandle; opacity: 0.5 }
PropertyChanges { target: endHandle; opacity: 0.5 }
PropertyChanges { target: menu; opacity: 1.0 }
}
]
}
|
