projects / wxWidgets.git / blame
| Commit | Line | Data |
|---|---|---|
| d14a1e28 RD |
1 | #---------------------------------------------------------------------- |
| 2 | # Name: wxPython.lib.anchors | |
| 3 | # Purpose: A class that provides an easy to use interface over layout | |
| 4 | # constraints for anchored layout. | |
| 5 | # | |
| 6 | # Author: Riaan Booysen | |
| 7 | # | |
| 8 | # Created: 15-Dec-2000 | |
| 9 | # RCS-ID: $Id$ | |
| 10 | # Copyright: (c) 2000 by Total Control Software | |
| 11 | # Licence: wxWindows license | |
| 12 | #---------------------------------------------------------------------- | |
| 1fded56b | 13 | |
| d14a1e28 RD |
14 | from wxPython.wx import wxLayoutConstraints, wxTop, wxLeft, wxBottom, wxRight, \ |
| 15 | wxHeight, wxWidth | |
| 1fded56b | 16 | |
| d14a1e28 RD |
17 | class LayoutAnchors(wxLayoutConstraints): |
| 18 | """ A class that implements Delphi's Anchors with wxLayoutConstraints. | |
| 19 | ||
| 20 | Anchored sides maintain the distance from the edge of the | |
| 21 | control to the same edge of the parent. | |
| 22 | When neither side is selected, the control keeps the same | |
| 23 | relative position to both sides. | |
| 24 | ||
| 25 | The current position and size of the control and it's parent | |
| 26 | is used when setting up the constraints. To change the size or | |
| 27 | position of an already anchored control, set the constraints to | |
| 28 | None, reposition or resize and reapply the anchors. | |
| 29 | ||
| 30 | Examples: | |
| 31 | ||
| 32 | Let's anchor the right and bottom edge of a control and | |
| 33 | resize it's parent. | |
| 34 | ||
| 35 | ctrl.SetConstraints(LayoutAnchors(ctrl, left=0, top=0, right=1, bottom=1)) | |
| 36 | ||
| 37 | +=========+ +===================+ | |
| 38 | | +-----+ | | | | |
| 39 | | | * | -> | | | |
| 40 | | +--*--+ | | +-----+ | | |
| 41 | +---------+ | | * | | |
| 42 | | +--*--+ | | |
| 43 | +-------------------+ | |
| 44 | * = anchored edge | |
| 45 | ||
| 46 | When anchored on both sides the control will stretch horizontally. | |
| 47 | ||
| 48 | ctrl.SetConstraints(LayoutAnchors(ctrl, 1, 0, 1, 1)) | |
| 49 | ||
| 50 | +=========+ +===================+ | |
| 51 | | +-----+ | | | | |
| 52 | | * * | -> | | | |
| 53 | | +--*--+ | | +---------------+ | | |
| 54 | +---------+ | * ctrl * | | |
| 55 | | +-------*-------+ | | |
| 56 | +-------------------+ | |
| 57 | * = anchored edge | |
| 58 | """ | |
| 59 | def __init__(self, control, left = 1, top = 1, right = 0, bottom = 0): | |
| 60 | wxLayoutConstraints.__init__(self) | |
| 61 | parent = control.GetParent() | |
| 62 | if not parent: return | |
| 63 | ||
| 64 | pPos, pSize = parent.GetPosition(), parent.GetClientSize() | |
| 65 | cPos, cSize = control.GetPosition(), control.GetSize() | |
| 66 | ||
| 67 | self.setConstraintSides(self.left, wxLeft, left, | |
| 68 | self.right, wxRight, right, | |
| 69 | self.width, wxWidth, self.centreX, | |
| 70 | cPos.x, cSize.x, pSize.x, parent) | |
| 71 | ||
| 72 | self.setConstraintSides(self.top, wxTop, top, | |
| 73 | self.bottom, wxBottom, bottom, | |
| 74 | self.height, wxHeight, self.centreY, | |
| 75 | cPos.y, cSize.y, pSize.y, parent) | |
| 76 | ||
| 77 | def setConstraintSides(self, side1, side1Edge, side1Anchor, | |
| 78 | side2, side2Edge, side2Anchor, | |
| 79 | size, sizeEdge, centre, | |
| 80 | cPos, cSize, pSize, parent): | |
| 81 | if side2Anchor: | |
| 82 | side2.SameAs(parent, side2Edge, pSize - (cPos + cSize)) | |
| 83 | if side1Anchor: | |
| 84 | side1.SameAs(parent, side1Edge, cPos) | |
| 85 | if not side2Anchor: | |
| 86 | size.AsIs() | |
| 87 | else: | |
| 88 | size.AsIs() | |
| 89 | if not side2Anchor: | |
| 90 | centre.PercentOf(parent, sizeEdge, | |
| 91 | int(((cPos + cSize / 2.0) / pSize)*100)) |