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comparison examples/draganddrop/dropsite/droparea.d @ 19:d54443f1ce1e

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add dropsite example
author mandel
date Thu, 14 May 2009 18:20:24 +0000
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children e747af2e6b46
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18:e9f0d27a8213 19:d54443f1ce1e
1 /****************************************************************************
2 **
3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4 ** Contact: Qt Software Information (qt-info@nokia.com)
5 **
6 ** This file is part of the examples of the Qt Toolkit.
7 **
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** Commercial Usage
10 ** Licensees holding valid Qt Commercial licenses may use this file in
11 ** accordance with the Qt Commercial License Agreement provided with the
12 ** Software or, alternatively, in accordance with the terms contained in
13 ** a written agreement between you and Nokia.
14 **
15 ** GNU Lesser General Public License Usage
16 ** Alternatively, this file may be used under the terms of the GNU Lesser
17 ** General Public License version 2.1 as published by the Free Software
18 ** Foundation and appearing in the file LICENSE.LGPL included in the
19 ** packaging of this file. Please review the following information to
20 ** ensure the GNU Lesser General Public License version 2.1 requirements
21 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
22 **
23 ** In addition, as a special exception, Nokia gives you certain
24 ** additional rights. These rights are described in the Nokia Qt LGPL
25 ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
26 ** package.
27 **
28 ** GNU General Public License Usage
29 ** Alternatively, this file may be used under the terms of the GNU
30 ** General Public License version 3.0 as published by the Free Software
31 ** Foundation and appearing in the file LICENSE.GPL included in the
32 ** packaging of this file. Please review the following information to
33 ** ensure the GNU General Public License version 3.0 requirements will be
34 ** met: http://www.gnu.org/copyleft/gpl.html.
35 **
36 ** If you are unsure which license is appropriate for your use, please
37 ** contact the sales department at qt-sales@nokia.com.
38 ** $QT_END_LICENSE$
39 **
40 ****************************************************************************/
41
42 module droparea;
43
44 import qt.gui.QLabel;
45
46 import tango.io.Stdout;
47
48
49 class DropArea : public QLabel
50 {
51 public:
52 this(QWidget parent = null)
53 {
54 super(parent);
55
56 setMinimumSize(200, 200);
57 setFrameStyle(QFrame.Sunken | QFrame.StyledPanel);
58 setAlignment(Qt.AlignCenter);
59 setAcceptDrops(true);
60 setAutoFillBackground(true);
61 clearArea();
62 }
63
64 void clearArea()
65 {
66 setText(tr("<drop content>"));
67 setBackgroundRole(QPalette.Dark);
68
69 changed.emit(null);
70 }
71
72 mixin Signal!("changed", QMimeData);
73
74 protected:
75
76 void dragEnterEvent(QDragEnterEvent event)
77 {
78 setText(tr("<drop content>"));
79 setBackgroundRole(QPalette.Highlight);
80
81 event.acceptProposedAction();
82 changed.emit(event.mimeData);
83 }
84
85 void dragMoveEvent(QDragMoveEvent event)
86 {
87 event.acceptProposedAction();
88 }
89
90 void dragLeaveEvent(QDragLeaveEvent event)
91 {
92 clearArea();
93 event.accept();
94 }
95
96 void dropEvent(QDropEvent event)
97 {
98 QMimeData mimeData = event.mimeData();
99
100 if (mimeData.hasImage()) {
101 //TODO setPixmap(qvariant_cast<QPixmap>(mimeData.imageData());
102 } else if (mimeData.hasHtml()) {
103 setText(mimeData.html());
104 setTextFormat(Qt.RichText);
105 } else if (mimeData.hasText()) {
106 setText(mimeData.text());
107 setTextFormat(Qt.PlainText);
108 } else if (mimeData.hasUrls()) {
109 QUrl[] urlList = mimeData.urls();
110 char[] text;
111 for (int i = 0; i < urlList.length && i < 32; ++i) {
112 text ~= urlList[i].path() ~ "\n";
113 }
114 setText(text);
115 } else {
116 setText(tr("Cannot display data"));
117 }
118
119 setBackgroundRole(QPalette.Dark);
120 event.acceptProposedAction();
121 }
122
123 private:
124 QLabel label;
125 }
126