[wxWidgets.git] / wxPython / demo / wxVListBox.py


from wxPython.wx import *

#----------------------------------------------------------------------

# The wxVListBox is much like a regular wxListBox except you draw the
# items yourself and the items can vary in height.
class MyVListBox(wxVListBox):

    # This method must be overridden.  When called it should draw the
    # n'th item on the dc within the rect.  How it is drawn, and what
    # is drawn is entirely up to you.
    def OnDrawItem(self, dc, rect, n):
        dc.DrawLabel(self._getItemText(n), rect,
                     wxALIGN_LEFT | wxALIGN_CENTER_VERTICAL)

    # This method must be overridden.  It should return the height
    # required to draw the n'th item.
    def OnMeasureItem(self, n):
        height = 0
        for line in self._getItemText(n).split('\n'):
            w, h = self.GetTextExtent(line)
            height += h
        return height + 5


    # These are also overridable:
    #
    # OnDrawSeparator(dc, rect, n)
    #   Draw a separator between items.  Note that rect may be reduced
    #   in size if desired so OnDrawItem gets a smaller rect.
    #
    # OnDrawBackground(dc, rect, n)
    #   Draw the background and maybe a border if desired.


    def _getItemText(self, item):
        if item % 2 == 0:
            return "This is item# %d" % item
        else:
            return "This is item# %d\n with an extra line" % item

#----------------------------------------------------------------------

# The wxHtmlListBox derives from wxVListBox, but draws each item
# itself as a wxHtmlCell.
class MyHtmlListBox(wxHtmlListBox):

    def OnGetItem(self, n):
        if n % 2 == 0:
            return "This is item# <b>%d</b>" % n
        else:
            return "This is item# <b>%d</b> <br>Any <font color='RED'>HTML</font> is okay." % n

#----------------------------------------------------------------------

class TestPanel(wxPanel):
    def __init__(self, parent, log):
        self.log = log
        wxPanel.__init__(self, parent, -1)
        spacer = 50

        vlb = MyVListBox(self, -1, size=(150, 250), style=wxBORDER_SUNKEN)
        vlb.SetItemCount(50)
        vlb.SetSelection(0)
        vlb.SetFocus()
        vlbSizer = wxBoxSizer(wxVERTICAL)
        vlbSizer.Add((spacer, spacer))
        vlbSizer.Add(wxStaticText(self, -1, "wxVListBox"), 0, 5, wxALL)
        vlbSizer.Add(vlb)

        hlb = MyHtmlListBox(self, -1, size=(150, 250), style=wxBORDER_SUNKEN)
        hlb.SetItemCount(50)
        hlb.SetSelection(0)
        hlbSizer = wxBoxSizer(wxVERTICAL)
        hlbSizer.Add((spacer, spacer))
        hlbSizer.Add(wxStaticText(self, -1, "wxHtmlListBox"), 0, 5, wxALL)
        hlbSizer.Add(hlb)

        sizer = wxBoxSizer(wxHORIZONTAL)
        sizer.Add((spacer, spacer))
        sizer.Add(vlbSizer)
        sizer.Add((spacer, spacer))
        sizer.Add((spacer, spacer))
        sizer.Add(hlbSizer)

        self.SetSizer(sizer)


#----------------------------------------------------------------------

def runTest(frame, nb, log):
    win = TestPanel(nb, log)
    return win

#----------------------------------------------------------------------


overview = """<html><body>
<h2><center>wxVListBox and wxHtmlListBox</center></h2>
<hr>

The "V" in wxVListBox stands for both "virtual" because it can have an
unlimited number of items since it doesn't store them itself, and
"variable" since items can vary in height.  It has much the same
interface as wxListBox and also emits the same events so you can use
the same EVT_LISTBOX function to connect a handler.
<p>

The wxHtmlListBox derives from wxVListBox, but draws each item itself
as a wxHtmlCell.  This means that you just need to provide a snippet
of HTML for each item when requested.

</body></html>
"""


if __name__ == '__main__':
    import sys,os
    import run
    run.main(['', os.path.basename(sys.argv[0])])
Commit	Line	Data
3628e088 RD	1
	2	from wxPython.wx import *
	3
	4	#----------------------------------------------------------------------
	5
	6	# The wxVListBox is much like a regular wxListBox except you draw the
	7	# items yourself and the items can vary in height.
	8	class MyVListBox(wxVListBox):
	9
	10	# This method must be overridden. When called it should draw the
	11	# n'th item on the dc within the rect. How it is drawn, and what
	12	# is drawn is entirely up to you.
	13	def OnDrawItem(self, dc, rect, n):
	14	dc.DrawLabel(self._getItemText(n), rect,
	15	wxALIGN_LEFT \| wxALIGN_CENTER_VERTICAL)
	16
	17	# This method must be overridden. It should return the height
	18	# required to draw the n'th item.
	19	def OnMeasureItem(self, n):
	20	height = 0
	21	for line in self._getItemText(n).split('\n'):
	22	w, h = self.GetTextExtent(line)
	23	height += h
	24	return height + 5
	25
	26
	27	# These are also overridable:
	28	#
	29	# OnDrawSeparator(dc, rect, n)
	30	# Draw a separator between items. Note that rect may be reduced
	31	# in size if desired so OnDrawItem gets a smaller rect.
	32	#
	33	# OnDrawBackground(dc, rect, n)
	34	# Draw the background and maybe a border if desired.
	35
	36
	37	def _getItemText(self, item):
	38	if item % 2 == 0:
	39	return "This is item# %d" % item
	40	else:
	41	return "This is item# %d\n with an extra line" % item
	42
	43	#----------------------------------------------------------------------
	44
	45	# The wxHtmlListBox derives from wxVListBox, but draws each item
	46	# itself as a wxHtmlCell.
	47	class MyHtmlListBox(wxHtmlListBox):
	48
	49	def OnGetItem(self, n):
	50	if n % 2 == 0:
	51	return "This is item# <b>%d</b>" % n
	52	else:
	53	return "This is item# <b>%d</b> <br>Any <font color='RED'>HTML</font> is okay." % n
	54
	55	#----------------------------------------------------------------------
	56
	57	class TestPanel(wxPanel):
	58	def __init__(self, parent, log):
	59	self.log = log
	60	wxPanel.__init__(self, parent, -1)
	61	spacer = 50
	62
	63	vlb = MyVListBox(self, -1, size=(150, 250), style=wxBORDER_SUNKEN)
	64	vlb.SetItemCount(50)
65	vlb.SetSelection(0)
66	vlb.SetFocus()
67	vlbSizer = wxBoxSizer(wxVERTICAL)
68	vlbSizer.Add((spacer, spacer))
69	vlbSizer.Add(wxStaticText(self, -1, "wxVListBox"), 0, 5, wxALL)
70	vlbSizer.Add(vlb)
71
72	hlb = MyHtmlListBox(self, -1, size=(150, 250), style=wxBORDER_SUNKEN)
73	hlb.SetItemCount(50)
74	hlb.SetSelection(0)
75	hlbSizer = wxBoxSizer(wxVERTICAL)
76	hlbSizer.Add((spacer, spacer))
77	hlbSizer.Add(wxStaticText(self, -1, "wxHtmlListBox"), 0, 5, wxALL)
78	hlbSizer.Add(hlb)
79
80	sizer = wxBoxSizer(wxHORIZONTAL)
81	sizer.Add((spacer, spacer))
82	sizer.Add(vlbSizer)
83	sizer.Add((spacer, spacer))
84	sizer.Add((spacer, spacer))
85	sizer.Add(hlbSizer)
86
87	self.SetSizer(sizer)
88
89
90	#----------------------------------------------------------------------
91
92	def runTest(frame, nb, log):
93	win = TestPanel(nb, log)
94	return win
95
96	#----------------------------------------------------------------------
97
98
99
100	overview = """<html><body>
101	<h2><center>wxVListBox and wxHtmlListBox</center></h2>
102	<hr>
103
104	The "V" in wxVListBox stands for both "virtual" because it can have an
105	unlimited number of items since it doesn't store them itself, and
106	"variable" since items can vary in height. It has much the same
107	interface as wxListBox and also emits the same events so you can use
108	the same EVT_LISTBOX function to connect a handler.
109	<p>
110
111	The wxHtmlListBox derives from wxVListBox, but draws each item itself
112	as a wxHtmlCell. This means that you just need to provide a snippet
113	of HTML for each item when requested.
114
115	</body></html>
116	"""
117
118
119
120	if __name__ == '__main__':
121	import sys,os
122	import run
123	run.main(['', os.path.basename(sys.argv[0])])
124