def ins_image(self, image, fmt, width, height, insert_space=True):
bytes_ = QByteArray()
buffer = QBuffer(bytes_)
buffer.open(QIODevice.WriteOnly)
image.save(buffer, fmt)
buffer.close()
base64 = bytes_.toBase64().data().decode(encoding="utf-8")
s = (f'<img width="{width}" height="{height}" '
f'src="data:image/{fmt};base64,{base64}"')
self._text_edit_cursor.insertHtml(s)
if insert_space:
self._text_edit_cursor.insertText(" ")
