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


import  wx

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

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

    # 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):
        if self.GetSelection() == n:
            c = wx.SystemSettings.GetColour(wx.SYS_COLOUR_HIGHLIGHTTEXT)
        else:
            c = self.GetForegroundColour()#wx.SystemSettings.GetColour(wx.SYS_COLOUR_HIGHLIGHTTEXT) 
        dc.SetTextForeground(c)
        dc.DrawLabel(self._getItemText(n), rect,
                     wx.ALIGN_LEFT | wx.ALIGN_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 wx.HtmlListBox derives from wx.VListBox, but draws each item
# itself as a wx.HtmlCell.
class MyHtmlListBox(wx.HtmlListBox):

    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(wx.Panel):
    def __init__(self, parent, log):
        self.log = log
        wx.Panel.__init__(self, parent, -1)
        spacer = 50

        vlb = MyVListBox(self, -1, size=(150, 250), style=wx.BORDER_SUNKEN)
        vlb.SetItemCount(50)
        vlb.SetSelection(0)
        vlb.SetFocus()
        vlbSizer = wx.BoxSizer(wx.VERTICAL)
        vlbSizer.Add((spacer, spacer))
        vlbSizer.Add(wx.StaticText(self, -1, "wx.VListBox"), 0, 5, wx.ALL)
        vlbSizer.Add(vlb)

        hlb = MyHtmlListBox(self, -1, size=(150, 250), style=wx.BORDER_SUNKEN)
        hlb.SetItemCount(50)
        hlb.SetSelection(0)
        hlbSizer = wx.BoxSizer(wx.VERTICAL)
        hlbSizer.Add((spacer, spacer))
        hlbSizer.Add(wx.StaticText(self, -1, "wx.HtmlListBox"), 0, 5, wx.ALL)
        hlbSizer.Add(hlb)

        sizer = wx.BoxSizer(wx.HORIZONTAL)
        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>wx.VListBox and wx.HtmlListBox</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 wx.HtmlListBox derives from wx.VListBox, but draws each item itself
as a wx.HtmlCell.  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	1
8fa876ca	2	import wx
3628e088 RD	3
	4	#----------------------------------------------------------------------
	5
95bfd958	6	# The wx.VListBox is much like a regular wx.ListBox except you draw the
3628e088	7	# items yourself and the items can vary in height.
8fa876ca	8	class MyVListBox(wx.VListBox):
3628e088 RD	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):
fb67a0b1 RD	14	if self.GetSelection() == n:
	15	c = wx.SystemSettings.GetColour(wx.SYS_COLOUR_HIGHLIGHTTEXT)
	16	else:
	17	c = self.GetForegroundColour()#wx.SystemSettings.GetColour(wx.SYS_COLOUR_HIGHLIGHTTEXT)
	18	dc.SetTextForeground(c)
3628e088	19	dc.DrawLabel(self._getItemText(n), rect,
8fa876ca	20	wx.ALIGN_LEFT \| wx.ALIGN_CENTER_VERTICAL)
3628e088 RD	21
	22	# This method must be overridden. It should return the height
	23	# required to draw the n'th item.
	24	def OnMeasureItem(self, n):
	25	height = 0
8fa876ca	26
3628e088 RD	27	for line in self._getItemText(n).split('\n'):
	28	w, h = self.GetTextExtent(line)
	29	height += h
8fa876ca	30
3628e088 RD	31	return height + 5
	32
	33
	34	# These are also overridable:
	35	#
	36	# OnDrawSeparator(dc, rect, n)
	37	# Draw a separator between items. Note that rect may be reduced
	38	# in size if desired so OnDrawItem gets a smaller rect.
	39	#
	40	# OnDrawBackground(dc, rect, n)
	41	# Draw the background and maybe a border if desired.
	42
	43
	44	def _getItemText(self, item):
	45	if item % 2 == 0:
	46	return "This is item# %d" % item
	47	else:
	48	return "This is item# %d\n with an extra line" % item
	49
	50	#----------------------------------------------------------------------
	51
8fa876ca RD	52	# The wx.HtmlListBox derives from wx.VListBox, but draws each item
	53	# itself as a wx.HtmlCell.
	54	class MyHtmlListBox(wx.HtmlListBox):
3628e088 RD	55
	56	def OnGetItem(self, n):
	57	if n % 2 == 0:
	58	return "This is item# <b>%d</b>" % n
	59	else:
	60	return "This is item# <b>%d</b> <br>Any <font color='RED'>HTML</font> is okay." % n
	61
	62	#----------------------------------------------------------------------
	63
8fa876ca	64	class TestPanel(wx.Panel):
3628e088 RD	65	def __init__(self, parent, log):
3628e088 RD	66	self.log = log
8fa876ca	67	wx.Panel.__init__(self, parent, -1)
3628e088 RD	68	spacer = 50
3628e088 RD	69
8fa876ca	70	vlb = MyVListBox(self, -1, size=(150, 250), style=wx.BORDER_SUNKEN)
3628e088 RD	71	vlb.SetItemCount(50)
	72	vlb.SetSelection(0)
	73	vlb.SetFocus()
8fa876ca	74	vlbSizer = wx.BoxSizer(wx.VERTICAL)
3628e088	75	vlbSizer.Add((spacer, spacer))
8fa876ca	76	vlbSizer.Add(wx.StaticText(self, -1, "wx.VListBox"), 0, 5, wx.ALL)
3628e088 RD	77	vlbSizer.Add(vlb)
3628e088 RD	78
8fa876ca	79	hlb = MyHtmlListBox(self, -1, size=(150, 250), style=wx.BORDER_SUNKEN)
3628e088 RD	80	hlb.SetItemCount(50)
3628e088 RD	81	hlb.SetSelection(0)
8fa876ca	82	hlbSizer = wx.BoxSizer(wx.VERTICAL)
3628e088	83	hlbSizer.Add((spacer, spacer))
8fa876ca	84	hlbSizer.Add(wx.StaticText(self, -1, "wx.HtmlListBox"), 0, 5, wx.ALL)
3628e088 RD	85	hlbSizer.Add(hlb)
3628e088 RD	86
8fa876ca	87	sizer = wx.BoxSizer(wx.HORIZONTAL)
3628e088 RD	88	sizer.Add((spacer, spacer))
	89	sizer.Add(vlbSizer)
	90	sizer.Add((spacer, spacer))
	91	sizer.Add((spacer, spacer))
	92	sizer.Add(hlbSizer)
	93
	94	self.SetSizer(sizer)
	95
	96
	97	#----------------------------------------------------------------------
	98
	99	def runTest(frame, nb, log):
	100	win = TestPanel(nb, log)
	101	return win
	102
	103	#----------------------------------------------------------------------
	104
	105
	106
	107	overview = """<html><body>
95bfd958	108	<h2><center>wx.VListBox and wx.HtmlListBox</center></h2>
3628e088 RD	109	<hr>
	110
	111	The "V" in wxVListBox stands for both "virtual" because it can have an
	112	unlimited number of items since it doesn't store them itself, and
	113	"variable" since items can vary in height. It has much the same
	114	interface as wxListBox and also emits the same events so you can use
	115	the same EVT_LISTBOX function to connect a handler.
	116	<p>
	117
95bfd958 RD	118	The wx.HtmlListBox derives from wx.VListBox, but draws each item itself
95bfd958 RD	119	as a wx.HtmlCell. This means that you just need to provide a snippet
3628e088 RD	120	of HTML for each item when requested.
	121
	122	</body></html>
	123	"""
	124
	125
	126
	127	if __name__ == '__main__':
	128	import sys,os
	129	import run
	130	run.main(['', os.path.basename(sys.argv[0])])
	131