def __init__(self, parent, id=-1, size=wx.wxDefaultSize):
# parent 1 ctor
wx.wxScrolledWindow.__init__(self, parent, id, wx.wxPoint(0, 0), size,
wx.wxSUNKEN_BORDER)
# parent 2 ctor
canvasSubject.__init__(self)
self._cobjects = []
self._previousRealCoords = None
self._mouseDelta = (0, 0)
self._potentiallyDraggedObject = None
self._draggedObject = None
self._observers = {'drag': [], 'buttonDown': [], 'buttonUp': []}
self.SetBackgroundColour("WHITE")
wx.EVT_MOUSE_EVENTS(self, self.OnMouseEvent)
wx.EVT_PAINT(self, self.OnPaint)
self.virtualWidth = 2048
self.virtualHeight = 2048
self._buffer = None
self._buffer = wx.wxEmptyBitmap(self.virtualWidth, self.virtualHeight)
# we're only going to draw into the buffer, so no real client DC
dc = wx.wxBufferedDC(None, self._buffer)
dc.SetBackground(wx.wxBrush(self.GetBackgroundColour()))
dc.Clear()
self.doDrawing(dc)
self.SetVirtualSize((self.virtualWidth, self.virtualHeight))
self.SetScrollRate(20, 20)
def getDC(self):
"""Returns DC which can be used by the outside to draw to our buffer.
As soon as dc dies (and it will at the end of the calling function)
the contents of self._buffer will be blitted to the screen.
"""
cdc = wx.wxClientDC(self)
# set device origin according to scroll position
self.PrepareDC(cdc)
dc = wx.wxBufferedDC(cdc, self._buffer)
return dc
def getDC(self):
"""Returns DC which can be used by the outside to draw to our buffer.
As soon as dc dies (and it will at the end of the calling function)
the contents of self._buffer will be blitted to the screen.
"""
cdc = wx.wxClientDC(self)
# set device origin according to scroll position
self.PrepareDC(cdc)
dc = wx.wxBufferedDC(cdc, self._buffer)
return dc
def __init__(self, parent, id = -1, size = wx.wxDefaultSize):
# parent 1 ctor
wx.wxScrolledWindow.__init__(self, parent, id, wx.wxPoint(0, 0), size,
wx.wxSUNKEN_BORDER)
# parent 2 ctor
canvasSubject.__init__(self)
self._cobjects = []
self._previousRealCoords = None
self._mouseDelta = (0,0)
self._potentiallyDraggedObject = None
self._draggedObject = None
self._observers = {'drag' : [],
'buttonDown' : [],
'buttonUp' : []}
self.SetBackgroundColour("WHITE")
wx.EVT_MOUSE_EVENTS(self, self.OnMouseEvent)
wx.EVT_PAINT(self, self.OnPaint)
self.virtualWidth = 2048
self.virtualHeight = 2048
self._buffer = None
self._buffer = wx.wxEmptyBitmap(self.virtualWidth, self.virtualHeight)
# we're only going to draw into the buffer, so no real client DC
dc = wx.wxBufferedDC(None, self._buffer)
dc.SetBackground(wx.wxBrush(self.GetBackgroundColour()))
dc.Clear()
self.doDrawing(dc)
self.SetVirtualSize((self.virtualWidth, self.virtualHeight))
self.SetScrollRate(20,20)
