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https://github.com/Sneed-Group/Poodletooth-iLand
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104 lines
3.8 KiB
Python
104 lines
3.8 KiB
Python
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#----------------------------------------------------------------------
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# Name: wx.lib.anchors
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# Purpose: A class that provides an easy to use interface over layout
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# constraints for anchored layout.
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#
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# Author: Riaan Booysen
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#
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# Created: 15-Dec-2000
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# Copyright: (c) 2000 by Total Control Software
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# Licence: wxWindows license
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#----------------------------------------------------------------------
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# 11/30/2003 - Jeff Grimmett (grimmtooth@softhome.net)
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#
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# o Updated for wx namespace
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# o Tested with updated demo
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#
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"""
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`LayoutAnchors` is a class that implements Delphi's Anchors using
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`wx.LayoutConstraints`.
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"""
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import wx
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class LayoutAnchors(wx.LayoutConstraints):
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"""
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A class that implements Delphi's Anchors with wx.LayoutConstraints.
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Anchored sides maintain the distance from the edge of the control
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to the same edge of the parent. When neither side is selected,
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the control keeps the same relative position to both sides.
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The current position and size of the control and it's parent is
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used when setting up the constraints. To change the size or
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position of an already anchored control, set the constraints to
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None, reposition or resize and reapply the anchors.
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Examples::
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Let's anchor the right and bottom edge of a control and
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resize it's parent.
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ctrl.SetConstraints(LayoutAnchors(ctrl, left=0, top=0, right=1, bottom=1))
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+=========+ +===================+
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| +-----+ | | |
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| | * | -> | |
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| +--*--+ | | +-----+ |
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+---------+ | | * |
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| +--*--+ |
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+-------------------+
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* = anchored edge
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When anchored on both sides the control will stretch horizontally.
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ctrl.SetConstraints(LayoutAnchors(ctrl, 1, 0, 1, 1))
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+=========+ +===================+
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| +-----+ | | |
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| * * | -> | |
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| +--*--+ | | +---------------+ |
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+---------+ | * ctrl * |
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| +-------*-------+ |
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+-------------------+
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* = anchored edge
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"""
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def __init__(self, control, left=1, top=1, right=0, bottom=0):
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wx.LayoutConstraints.__init__(self)
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parent = control.GetParent()
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if not parent: return
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pPos, pSize = parent.GetPosition(), parent.GetClientSize()
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cPos, cSize = control.GetPosition(), control.GetSize()
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self.setConstraintSides(self.left, wx.Left, left,
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self.right, wx.Right, right,
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self.width, wx.Width, self.centreX,
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cPos.x, cSize.width, pSize.width, parent)
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self.setConstraintSides(self.top, wx.Top, top,
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self.bottom, wx.Bottom, bottom,
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self.height, wx.Height, self.centreY,
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cPos.y, cSize.height, pSize.height, parent)
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def setConstraintSides(self, side1, side1Edge, side1Anchor,
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side2, side2Edge, side2Anchor,
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size, sizeEdge, centre,
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cPos, cSize, pSize, parent):
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if side2Anchor:
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side2.SameAs(parent, side2Edge, pSize - (cPos + cSize))
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if side1Anchor:
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side1.SameAs(parent, side1Edge, cPos)
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if not side2Anchor:
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size.AsIs()
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else:
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size.AsIs()
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if not side2Anchor:
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centre.PercentOf(parent, sizeEdge,
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int(((cPos + cSize / 2.0) / pSize)*100))
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