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A patch for wxListCtrlAutoWidthMixin from anthony@computronix.com

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@17256 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robin Dunn
2002-09-18 20:35:36 +00:00
parent 02b2d73690
commit 1176111c0d
1 changed files with 63 additions and 98 deletions
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161
wxPython/wxPython/lib/mixins/listctrl.py
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@@ -132,137 +132,102 @@ class wxColumnSorterMixin:
class wxListCtrlAutoWidthMixin: class wxListCtrlAutoWidthMixin:
""" A mix-in class that automatically resizes the last column to take up """ A mix-in class that automatically resizes the last column to take up
the remaining width of the wxListCtrl. the remaining width of the wxListCtrl.
This causes the wxListCtrl to automatically take up the full width of This causes the wxListCtrl to automatically take up the full width of
the list, without either a horizontal scroll bar (unless absolutely the list, without either a horizontal scroll bar (unless absolutely
necessary) or empty space to the right of the last column. necessary) or empty space to the right of the last column.
NOTE: This only works for report-style lists. NOTE: This only works for report-style lists.
WARNING: If you override the EVT_SIZE event in your wxListCtrl, make WARNING: If you override the EVT_SIZE event in your wxListCtrl, make
sure you call event.Skip() to ensure that the mixin's sure you call event.Skip() to ensure that the mixin's
_OnResize method is called. _OnResize method is called.
This mix-in class was written by Erik Westra <ewestra@wave.co.nz> This mix-in class was written by Erik Westra <ewestra@wave.co.nz>
""" """
def __init__(self): def __init__(self):
""" Standard initialiser. """ Standard initialiser.
""" """
self._needResize = false self._lastColMinWidth = None
self._lastColMinWidth = None
EVT_SIZE(self, self._onResize) EVT_SIZE(self, self._onResize)
EVT_LIST_COL_END_DRAG(self, self.GetId(), self._onEndColDrag) EVT_LIST_COL_END_DRAG(self, self.GetId(), self._onResize)
EVT_IDLE(self, self._onIdle)
def resizeLastColumn(self, minWidth): def resizeLastColumn(self, minWidth):
""" Resize the last column appropriately. """ Resize the last column appropriately.
If the list's columns are too wide to fit within the window, we use If the list's columns are too wide to fit within the window, we use
a horizontal scrollbar. Otherwise, we expand the right-most column a horizontal scrollbar. Otherwise, we expand the right-most column
to take up the remaining free space in the list. to take up the remaining free space in the list.
This method is called automatically when the wxListCtrl is resized; This method is called automatically when the wxListCtrl is resized;
you can also call it yourself whenever you want the last column to you can also call it yourself whenever you want the last column to
be resized appropriately (eg, when adding, removing or resizing be resized appropriately (eg, when adding, removing or resizing
columns). columns).
'minWidth' is the preferred minimum width for the last column. 'minWidth' is the preferred minimum width for the last column.
""" """
self._lastColMinWidth = minWidth self._lastColMinWidth = minWidth
self._doResize() self._doResize()
# ===================== # =====================
# == Private Methods == # == Private Methods ==
# ===================== # =====================
def _onResize(self, event): def _onResize(self, event):
""" Respond to the wxListCtrl being resized. """ Respond to the wxListCtrl being resized.
We automatically resize the last column in the list. We automatically resize the last column in the list.
""" """
self._doResize() wxCallAfter(self._doResize)
event.Skip()
def _onEndColDrag(self, event):
""" Respond to the user resizing one of our columns.
We resize the last column in the list to match. Note that, because
of a quirk in the way columns are resized under MS Windows, we
actually have to do the column resize in idle time.
"""
self._needResize = true
event.Skip()
def _onIdle(self, event):
""" Respond to an idle event.
We resize the last column, if we've been asked to do so.
"""
if self._needResize:
self._doResize()
self.Refresh() # Fixes redraw problem under MS Windows.
self._needResize = false
event.Skip() event.Skip()
def _doResize(self): def _doResize(self):
""" Resize the last column as appropriate. """ Resize the last column as appropriate.
If the list's columns are too wide to fit within the window, we use If the list's columns are too wide to fit within the window, we use
a horizontal scrollbar. Otherwise, we expand the right-most column a horizontal scrollbar. Otherwise, we expand the right-most column
to take up the remaining free space in the list. to take up the remaining free space in the list.
We remember the current size of the last column, before resizing, We remember the current size of the last column, before resizing,
as the preferred minimum width if we haven't previously been given as the preferred minimum width if we haven't previously been given
or calculated a minimum width. This ensure that repeated calls to or calculated a minimum width. This ensure that repeated calls to
_doResize() don't cause the last column to size itself too large. _doResize() don't cause the last column to size itself too large.
""" """
numCols = self.GetColumnCount() numCols = self.GetColumnCount()
if numCols == 0: return # Nothing to resize. if numCols == 0: return # Nothing to resize.
if self._lastColMinWidth == None: if self._lastColMinWidth == None:
self._lastColMinWidth = self.GetColumnWidth(numCols - 1) self._lastColMinWidth = self.GetColumnWidth(numCols - 1)
listWidth = self.GetSize().width # We're showing the vertical scrollbar -> allow for scrollbar width
if self.GetItemCount() > self.GetCountPerPage(): # NOTE: on GTK, the scrollbar is included in the client size, but on
# We're showing the vertical scrollbar -> allow for scrollbar width # Windows it is not included
scrollWidth = wxSystemSettings_GetSystemMetric(wxSYS_VSCROLL_X) listWidth = self.GetClientSize().width
listWidth = listWidth - scrollWidth if wxPlatform != '__WXMSW__':
if self.GetItemCount() > self.GetCountPerPage():
scrollWidth = wxSystemSettings_GetSystemMetric(wxSYS_VSCROLL_X)
listWidth = listWidth - scrollWidth
totColWidth = 0 # Width of all columns except last one. totColWidth = 0 # Width of all columns except last one.
for col in range(numCols-1): for col in range(numCols-1):
totColWidth = totColWidth + self.GetColumnWidth(col) totColWidth = totColWidth + self.GetColumnWidth(col)
lastColWidth = self.GetColumnWidth(numCols - 1) lastColWidth = self.GetColumnWidth(numCols - 1)
# NOTE: This is the extra number of pixels required to make the if totColWidth + self._lastColMinWidth > listWidth:
# wxListCtrl size correctly, at least under Windows 2000. # We haven't got the width to show the last column at its minimum
# Unfortunately, different OSs and even different versions of the # width -> set it to its minimum width and allow the horizontal
# same OS may implement the wxListCtrl differently, so different # scrollbar to show.
# margins may be needed to get the columns resized correctly. No self.SetColumnWidth(numCols-1, self._lastColMinWidth)
# doubt the margin could be calculated in a more intelligent return
# manner...
if wxPlatform == '__WXMSW__':
margin = 6
elif wxPlatform == '__WXGTK__':
margin = 8
else:
margin = 0
if totColWidth + self._lastColMinWidth > listWidth - margin: # Resize the last column to take up the remaining available space.
# We haven't got the width to show the last column at its minimum
# width -> set it to its minimum width and allow the horizontal
# scrollbar to show.
self.SetColumnWidth(numCols-1, self._lastColMinWidth)
return
# Resize the last column to take up the remaining available space. self.SetColumnWidth(numCols-1, listWidth - totColWidth)
self.SetColumnWidth(numCols-1, listWidth - totColWidth - margin)