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97 lines
3.7 KiB
97 lines
3.7 KiB
import wx
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from wx.lib.wordwrap import wordwrap
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class AutoWrappedStaticText(wx.StaticText):
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"""
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Copy/pasta of wx.lib.agw.infobar.AutoWrapStaticText with 3 modifications:
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1. Extends wx.StaticText rather than GenStaticText
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2. Does not set the fore/background colors to sys defaults
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3. takes an optional `target` parameter for sizing info
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The behavior of GenStaticText's background color is pretty buggy cross-
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platform. It doesn't reliably match its parent components background
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colors[0] (for instance when rendered inside of a Notebook) which leads to
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ugly 'boxing' around the text components.
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There is either a bug in WX, or or human error on my end, which causes
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EVT_SIZE events to continuously spawn from this (and AutoWrapStaticText) but
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with ever decreasing widths (in response to the SetLabel action in the
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wrap handler). The end result is a single skinny column of letters.
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The work around is to respond the EVT_SIZE event, but follow the size of the
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`target` component rather than relying on the size of the event.
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[0] more specifically, they'll match 1:1 on paper, but still ultimately
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render differently.
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"""
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def __init__(self, parent, *args, **kwargs):
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self.target = kwargs.pop('target', None)
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super(AutoWrappedStaticText, self).__init__(parent, *args, **kwargs)
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self.label = kwargs.get('label')
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self.Bind(wx.EVT_SIZE, self.OnSize)
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self.parent = parent
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def OnSize(self, event):
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"""
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Handles the ``wx.EVT_SIZE`` event for :class:`AutoWrapStaticText`.
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:param `event`: a :class:`wx.SizeEvent` event to be processed.
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"""
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event.Skip()
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if self.target:
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self.Wrap(self.target.GetSize().width)
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else:
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self.Wrap(self.parent.GetSize()[0])
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def Wrap(self, width):
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"""
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This functions wraps the controls label so that each of its lines becomes at
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most `width` pixels wide if possible (the lines are broken at words boundaries
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so it might not be the case if words are too long).
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If `width` is negative, no wrapping is done.
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:param integer `width`: the maximum available width for the text, in pixels.
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:note: Note that this `width` is not necessarily the total width of the control,
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since a few pixels for the border (depending on the controls border style) may be added.
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"""
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if width < 0:
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return
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self.Freeze()
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dc = wx.ClientDC(self)
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dc.SetFont(self.GetFont())
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text = wordwrap(self.label, width, dc)
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self.SetLabel(text, wrapped=True)
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self.Thaw()
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def SetLabel(self, label, wrapped=False):
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"""
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Sets the :class:`AutoWrapStaticText` label.
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All "&" characters in the label are special and indicate that the following character is
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a mnemonic for this control and can be used to activate it from the keyboard (typically
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by using ``Alt`` key in combination with it). To insert a literal ampersand character, you
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need to double it, i.e. use "&&". If this behaviour is undesirable, use :meth:`~Control.SetLabelText` instead.
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:param string `label`: the new :class:`AutoWrapStaticText` text label;
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:param bool `wrapped`: ``True`` if this method was called by the developer using :meth:`~AutoWrapStaticText.SetLabel`,
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``False`` if it comes from the :meth:`~AutoWrapStaticText.OnSize` event handler.
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:note: Reimplemented from :class:`wx.Control`.
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"""
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if not wrapped:
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self.label = label
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wx.StaticText.SetLabel(self, label)
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