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49 ############################################################################
50
51 from PySide2.QtGui import *
52
53
DropArea(QWidget * parent)54 DropArea.DropArea(QWidget *parent)
55 : QLabel(parent)
56 {
57 setMinimumSize(200, 200)
58 setFrameStyle(QFrame.Sunken | QFrame::StyledPanel)
59 setAlignment(Qt.AlignCenter)
60 setAcceptDrops(True)
61 setAutoFillBackground(True)
62 clear()
63 }
64
dragEnterEvent(QDragEnterEvent * event)65 void DropArea.dragEnterEvent(QDragEnterEvent *event)
66 {
67 setText(tr("<drop content>"))
68 setBackgroundRole(QPalette.Highlight)
69
70 event.acceptProposedAction()
71 emit changed(event.mimeData())
72 }
73
dragMoveEvent(QDragMoveEvent * event)74 void DropArea.dragMoveEvent(QDragMoveEvent *event)
75 {
76 event.acceptProposedAction()
77 }
78
dropEvent(QDropEvent * event)79 void DropArea.dropEvent(QDropEvent *event)
80 {
81 const QMimeData *mimeData = event.mimeData()
82
83 if (mimeData.hasImage()) {
84 setPixmap(qvariant_cast<QPixmap>(mimeData.imageData()))
85 } else if (mimeData.hasHtml()) {
86 setText(mimeData.html())
87 setTextFormat(Qt.RichText)
88 } else if (mimeData.hasText()) {
89 setText(mimeData.text())
90 setTextFormat(Qt.PlainText)
91 } else {
92 setText(tr("Cannot display data"))
93 }
94
95 setBackgroundRole(QPalette.Dark)
96 event.acceptProposedAction()
97 }
98
99 //![0]
100 def paste(self):
101 clipboard = QGuiApplication.clipboard()
102 mimeData = clipboard.mimeData()
103
104 if mimeData.hasImage():
105 setPixmap(mimeData.imageData())
106 elif mimeData.hasHtml():
107 setText(mimeData.html())
108 setTextFormat(Qt.RichText)
109 elif (mimeData.hasText():
110 setText(mimeData.text())
111 setTextFormat(Qt.PlainText)
112 else:
113 setText(tr("Cannot display data"))
114 //![0]
115
116 emit changed(mimeData)
117 setBackgroundRole(QPalette.Dark)
118 //event.acceptProposedAction()
119 }
120
121 void DropArea.dragLeaveEvent(QDragLeaveEvent *event)
122 {
123 clear()
124 event.accept()
125 }
126
127 void DropArea.clear()
128 {
129 setText(tr("<drop content>"))
130 setBackgroundRole(QPalette.Dark)
131
132 emit changed()
133 }
134
135 QPixmap DropArea.extractPixmap(const QByteArray &data, const QString &format)
136 {
137 QList<QByteArray> imageFormats = QImageReader.supportedImageFormats()
138 QPixmap pixmap
139
140 foreach (QByteArray imageFormat, imageFormats) {
141 if (format.mid(6) == QString(imageFormat)) {
142 pixmap.loadFromData(data, imageFormat)
143 break
144 }
145 }
146 return pixmap
147 }
148