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# (C) Copyright 2004-2023 Enthought, Inc., Austin, TX
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in LICENSE.txt and may be redistributed only under
# the conditions described in the aforementioned license. The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
#
# Thanks for using Enthought open source!
""" Defines a wxPython ImageControl widget that is used by various Widgets.
"""
import wx
class ImageControl(wx.Window):
"""A wxPython control that displays an image.
"""
def __init__(self, parent, bitmap=None, padding=10):
"""Initializes the object."""
if bitmap is not None:
size = wx.Size(
bitmap.GetWidth() + padding, bitmap.GetHeight() + padding
)
else:
size = wx.Size(32 + padding, 32 + padding)
wx.Window.__init__(self, parent, -1, size=size,)
self._bitmap = bitmap
# Set up the 'paint' event handler:
self.Bind(wx.EVT_PAINT, self._on_paint)
def SetBitmap(self, bitmap=None):
"""Sets the bitmap image."""
if bitmap is not None:
if bitmap != self._bitmap:
self._bitmap = bitmap
self.Refresh()
else:
self._bitmap = None
def GetBitmap(self):
"""Gets the bitmap image."""
return self._bitmap
def _on_paint(self, event=None):
"""Handles the control being re-painted."""
wdc = wx.PaintDC(self)
wdx, wdy = self.GetClientSize()
bitmap = self._bitmap
if bitmap is None:
return
bdx = bitmap.GetWidth()
bdy = bitmap.GetHeight()
wdc.DrawBitmap(bitmap, (wdx - bdx) // 2, (wdy - bdy) // 2, True)
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