+++ /dev/null
-from wxPython.wx import wxLayoutConstraints,\
- wxTop, wxLeft, wxBottom, wxRight, \
- wxHeight, wxWidth, wxCentreX, wxCentreY
-import re,string
-
-class Layoutf(wxLayoutConstraints):
- """
-The class Layoutf(wxLayoutConstraints) presents a simplification
-of the wxLayoutConstraints syntax. The name Layoutf is choosen
-because of the similarity with C's printf function.
-
-Quick Example:
-
- lc = Layoutf('t=t#1;l=r10#2;r!100;h%h50#1', (self, self.panel))
-
-is equivalent to
-
- lc = wxLayoutContraints()
- lc.top.SameAs(self, wxTop)
- lc.left.SameAs(self.panel, wxRight, 10)
- lc.right.Absolute(100)
- lc.height.PercentOf(self, wxHeight, 50)
-
-Usage:
-
- You can give a constraint string to the Layoutf constructor,
-or use the 'pack' method. The following are equivalent:
-
- lc = Layoutf('t=t#1;l=r#2;r!100;h%h50#1', (self, self.panel))
-
-and
-
- lc = Layoutf()
- lc.pack('t=t#1;l=r#2;r!100;h%h50#1', (self, self.panel))
-
- Besides 'pack' there's also 'debug_pack' which does not set
-constraints, but prints traditional wxLayoutConstraint calls to
-stdout.
-
- The calls to the Layoutf constructor and pack methods have
-the following argument list:
-
- (constraint_string, objects_tuple)
-
-Constraint String syntax:
-
- Constraint directives are separated by semi-colons. You
-generally (always?) need four directives to completely describe a
-subwindow's location.
-
- A single directive has either of the following forms:
-
- 1. <own attribute><compare operation>[numerical argument]
- for example r!100 -> lc.right.Absolute(100) )
- and w* -> lc.width.AsIs()
-
- 2. <own attribute><compare operation>[numerical argument]
- #<compare object nr.>
- for example t_10#2 (lc.top.Below(<second obj>, 10)
-
- 3. <own attribute><compare operation><compare attribute>
- [numerical argument]#<compare object nr.>
- for example w%h50#2 ( lc.width.PercentOf(<second obj>,
- wxHeight, 50) and t=b#1 ( lc.top.SameAs(<first obj>,
- wxBottom) )
-
- Which one you need is defined by the <compare operation>
-type. The following take type 1 (no object to compare with):
-
- '!': 'Absolute', '?': 'Unconstrained', '*': 'AsIs'
-
-These take type 2 (need to be compared with another object)
-
- '<': 'LeftOf', '>': 'RightOf', '^': 'Above', '_': 'Below'
-
-These take type 3 (need to be compared to another object
-attribute)
-
- '=': 'SameAs', '%': 'PercentOf'
-
-For all types, the <own attribute> letter can be any of
-
- 't': 'top', 'l': 'left', 'b': 'bottom',
- 'r': 'right', 'h': 'height', 'w': 'width',
- 'x': 'centreX', 'y': 'centreY'
-
-If the operation takes an (optional) numerical argument, place it
-in [numerical argument]. For type 3 directives, the <compare
-attribute> letter can be any of
-
- 't': 'wxTop', 'l': 'wxLeft', 'b': 'wxBottom'
- 'r': 'wxRight', 'h': 'wxHeight', 'w': 'wxWidth',
- 'x': 'wxCentreX', 'y': 'wxCentreY'
-
-Note that these are the same letters as used for <own attribute>,
-so you'll only need to remember one set. Finally, the object
-whose attribute is refered to, is specified by #<compare object
-nr>, where <compare object nr> is the 1-based (stupid, I know,
-but I've gotten used to it) index of the object in the
-objects_tuple argument.
-
-Bugs:
-
-Not entirely happy about the logic in the order of arguments
-after the <compare operation> character.
-
-Not all wxLayoutConstraint methods are included in the
-syntax. However, the type 3 directives are generally the most
-used. Further excuse: wxWindows layout constraints are at the
-time of this writing not documented.
-
-"""
-
- attr_d = { 't': 'top', 'l': 'left', 'b': 'bottom',
- 'r': 'right', 'h': 'height', 'w': 'width',
- 'x': 'centreX', 'y': 'centreY' }
- op_d = { '=': 'SameAs', '%': 'PercentOf', '<': 'LeftOf',
- '>': 'RightOf', '^': 'Above', '_': 'Below',
- '!': 'Absolute', '?': 'Unconstrained', '*': 'AsIs' }
- cmp_d = { 't': 'wxTop', 'l': 'wxLeft', 'b': 'wxBottom',
- 'r': 'wxRight', 'h': 'wxHeight', 'w': 'wxWidth',
- 'x': 'wxCentreX', 'y': 'wxCentreY' }
-
- rexp1 = re.compile('^\s*([tlrbhwxy])\s*([!\?\*])\s*(\d*)\s*$')
- rexp2 = re.compile('^\s*([tlrbhwxy])\s*([=%<>^_])\s*([tlrbhwxy]?)\s*(\d*)\s*#(\d+)\s*$')
-
- def __init__(self,pstr=None,winlist=None):
- wxLayoutConstraints.__init__(self)
- if pstr:
- self.pack(pstr,winlist)
-
- def pack(self, pstr, winlist):
- pstr = string.lower(pstr)
- for item in string.split(pstr,';'):
- m = self.rexp1.match(item)
- if m:
- g = list(m.groups())
- attr = getattr(self, self.attr_d[g[0]])
- func = getattr(attr, self.op_d[g[1]])
- if g[1] == '!':
- func(int(g[2]))
- else:
- func()
- continue
- m = self.rexp2.match(item)
- if not m: raise ValueError
- g = list(m.groups())
- attr = getattr(self, self.attr_d[g[0]])
- func = getattr(attr, self.op_d[g[1]])
- if g[3]: g[3] = int(g[3])
- else: g[3] = None;
- g[4] = int(g[4]) - 1
- if g[1] in '<>^_':
- if g[3]: func(winlist[g[4]], g[3])
- else: func(winlist[g[4]])
- else:
- cmp = eval(self.cmp_d[g[2]])
- if g[3]: func(winlist[g[4]], cmp, g[3])
- else: func(winlist[g[4]], cmp)
-
- def debug_pack(self, pstr, winlist):
- pstr = string.lower(pstr)
- for item in string.split(pstr,';'):
- m = self.rexp1.match(item)
- if m:
- g = list(m.groups())
- attr = getattr(self, self.attr_d[g[0]])
- func = getattr(attr, self.op_d[g[1]])
- if g[1] == '!':
- print "%s.%s.%s(%s)" % \
- ('self',self.attr_d[g[0]],self.op_d[g[1]],g[2])
- else:
- print "%s.%s.%s()" % \
- ('self',self.attr_d[g[0]],self.op_d[g[1]])
- continue
- m = self.rexp2.match(item)
- if not m: raise ValueError
- g = list(m.groups())
- if g[3]: g[3] = int(g[3])
- else: g[3] = 0;
- g[4] = int(g[4]) - 1
- if g[1] in '<>^_':
- if g[3]: print "%s.%s.%s(%s,%d)" % \
- ('self',self.attr_d[g[0]],self.op_d[g[1]],winlist[g[4]],
- g[3])
- else: print "%s.%s.%s(%s)" % \
- ('self',self.attr_d[g[0]],self.op_d[g[1]],winlist[g[4]])
- else:
- if g[3]: print "%s.%s.%s(%s,%s,%d)" % \
- ('self',self.attr_d[g[0]],self.op_d[g[1]],winlist[g[4]],
- self.cmp_d[g[2]],g[3])
- else: print "%s.%s.%s(%s,%s)" % \
- ('self',self.attr_d[g[0]],self.op_d[g[1]],winlist[g[4]],
- self.cmp_d[g[2]])
-
-if __name__=='__main__':
- from wxPython.wx import *
-
- class TestLayoutf(wxFrame):
- def __init__(self, parent):
- wxFrame.__init__(self, parent, -1, 'Test Layout Constraints',
- wxPyDefaultPosition, wxSize(500, 300))
-
- self.SetAutoLayout(true)
- EVT_BUTTON(self, 100, self.OnButton)
- EVT_BUTTON(self, 101, self.OnAbout)
-
- self.panelA = wxWindow(self, -1, wxPyDefaultPosition, wxPyDefaultSize, wxSIMPLE_BORDER)
- self.panelA.SetBackgroundColour(wxBLUE)
- self.panelA.SetConstraints(Layoutf('t=t10#1;l=l10#1;b=b10#1;r%r50#1',(self,)))
-
- self.panelB = wxWindow(self, -1, wxPyDefaultPosition, wxPyDefaultSize, wxSIMPLE_BORDER)
- self.panelB.SetBackgroundColour(wxRED)
- self.panelB.SetConstraints(Layoutf('t=t10#1;r=r10#1;b%b30#1;l>10#2', (self,self.panelA)))
-
- self.panelC = wxWindow(self, -1, wxPyDefaultPosition, wxPyDefaultSize, wxSIMPLE_BORDER)
- self.panelC.SetBackgroundColour(wxWHITE)
- self.panelC.SetConstraints(Layoutf('t_10#3;r=r10#1;b=b10#1;l>10#2', (self,self.panelA,self.panelB)))
-
- b = wxButton(self.panelA, 101, ' About: ')
- b.SetConstraints(Layoutf('X=X#1;Y=Y#1;h*;w%w50#1', (self.panelA,)))
-
- b = wxButton(self.panelB, 100, ' Panel B ')
- b.SetConstraints(Layoutf('t=t2#1;r=r4#1;h*;w*', (self.panelB,)))
-
- self.panelD = wxWindow(self.panelC, -1, wxPyDefaultPosition, wxPyDefaultSize, wxSIMPLE_BORDER)
- self.panelD.SetBackgroundColour(wxGREEN)
- self.panelD.SetConstraints(Layoutf('b%h50#1;r%w50#1;h=h#2;w=w#2', (self.panelC, b)))
-
- b = wxButton(self.panelC, 100, ' Panel C ')
- b.SetConstraints(Layoutf('t_#1;l>#1;h*;w*', (self.panelD,)))
-
- wxStaticText(self.panelD, -1, "Panel D", wxPoint(4, 4)).SetBackgroundColour(wxGREEN)
-
- def OnButton(self, event):
- self.Close(true)
-
- def OnAbout(self, event):
- try:
- from dialogs import wxScrolledMessageDialog
- msg = wxScrolledMessageDialog(self, Layoutf.__doc__, "about")
- msg.ShowModal()
- except:
- print msg
-
- def OnCloseWindow(self, event):
- self.Destroy()
-
- class TestApp(wxApp):
- def OnInit(self):
- frame = TestLayoutf(NULL)
- frame.Show(1)
- self.SetTopWindow(frame)
- return 1
-
- app = TestApp(0)
- app.MainLoop()
-
-
-
-
-
projects / wxWidgets.git / blobdiff