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=begin
**
** Copyright (C) 2004-2005 Trolltech AS. All rights reserved.
**
** This file is part of the example classes of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file. Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://www.trolltech.com/products/qt/licensing.html or contact the
** sales department at sales@trolltech.com.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** Translated to QtRuby by Richard Dale
=end
class DragWidget < Qt::Frame
def initialize(parent = nil, flags = 0)
super(parent, flags)
setMinimumSize(200, 200)
setFrameStyle(Qt::Frame::Sunken | Qt::Frame::StyledPanel)
setAcceptDrops(true)
boatIcon = Qt::Label.new(self)
boatIcon.pixmap = Qt::Pixmap.new("images/boat.png")
boatIcon.move(20, 20)
boatIcon.show()
boatIcon.attribute = Qt::WA_DeleteOnClose
carIcon = Qt::Label.new(self)
carIcon.pixmap = Qt::Pixmap.new("images/car.png")
carIcon.move(120, 20)
carIcon.show()
carIcon.attribute = Qt::WA_DeleteOnClose
houseIcon = Qt::Label.new(self)
houseIcon.pixmap = Qt::Pixmap.new("images/house.png")
houseIcon.move(20, 120)
houseIcon.show()
houseIcon.attribute = Qt::WA_DeleteOnClose
end
def dragEnterEvent(event)
if event.mimeData().hasFormat("application/x-dnditemdata")
if event.source() == self
event.dropAction = Qt::MoveAction
event.accept()
else
event.acceptProposedAction()
end
else
event.ignore()
end
end
def dropEvent(event)
if event.mimeData().hasFormat("application/x-dnditemdata")
itemData = event.mimeData().data("application/x-dnditemdata")
dataStream = Qt::DataStream.new(itemData, Qt::IODevice::ReadOnly.to_i)
pixmap = Qt::Pixmap.new
offset = Qt::Point.new
dataStream >> pixmap >> offset
newIcon = Qt::Label.new(self)
newIcon.pixmap = pixmap
newIcon.move(event.pos() - offset)
newIcon.show()
newIcon.attribute = Qt::WA_DeleteOnClose
if event.source() == self
event.dropAction = Qt::MoveAction
event.accept()
else
event.acceptProposedAction()
end
else
event.ignore()
end
end
def mousePressEvent(event)
child = childAt(event.pos())
if child.nil?
return
end
pixmap = child.pixmap.copy
itemData = Qt::ByteArray.new("")
dataStream = Qt::DataStream.new(itemData, Qt::IODevice::WriteOnly.to_i)
dataStream << pixmap << (event.pos() - child.pos())
mimeData = Qt::MimeData.new
mimeData.setData("application/x-dnditemdata", itemData)
drag = Qt::Drag.new(self)
drag.mimeData = mimeData
drag.pixmap = pixmap
drag.hotSpot = event.pos - child.pos
tempPixmap = pixmap.copy
painter = Qt::Painter.new
painter.begin(tempPixmap)
painter.fillRect(pixmap.rect(), Qt::Brush.new(Qt::Color.new(127, 127, 127, 127)))
painter.end
child.pixmap = tempPixmap
if drag.start(Qt::CopyAction | Qt::MoveAction) == Qt::MoveAction
child.close()
else
child.show()
child.pixmap = pixmap
end
end
end
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