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PFListPane.py
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PFListPane.py
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# =============================================================================
# Copyright (C) 2010 Diego Duclos
#
# This file is part of pyfa.
#
# pyfa is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# pyfa is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with pyfa. If not, see <http://www.gnu.org/licenses/>.
# =============================================================================
# noinspection PyPackageRequirements
import wx
class PFListPane(wx.ScrolledWindow):
def __init__(self, parent):
wx.ScrolledWindow.__init__(self, parent, id=wx.ID_ANY, pos=wx.DefaultPosition, size=wx.Size(1, 1),
style=wx.TAB_TRAVERSAL)
self._wList = []
self._wCount = 0
self.itemsHeight = 1
self.SetBackgroundColour(wx.SystemSettings_GetColour(wx.SYS_COLOUR_WINDOW))
self.SetVirtualSize((1, 1))
self.SetScrollRate(0, 1)
self.Bind(wx.EVT_SCROLLWIN_LINEUP, self.MScrollUp)
self.Bind(wx.EVT_SCROLLWIN_LINEDOWN, self.MScrollDown)
# self.Bind(wx.EVT_CHILD_FOCUS, self.OnChildFocus)
# self.Bind(wx.EVT_LEFT_DOWN, self.ForceFocus)
self.SetFocus()
# self.Bind(wx.EVT_MOUSE_CAPTURE_CHANGED, self.ForceFocus)
self.Bind(wx.EVT_SCROLLWIN_THUMBRELEASE, self.ForceFocus)
def ForceFocus(self, event):
if self.FindFocus() and self.FindFocus().Parent != self:
self.SetFocus()
event.Skip()
def OnChildFocus(self, event):
event.Skip()
child = event.GetWindow()
self.ScrollChildIntoView(child)
def MScrollUp(self, event):
posy = self.GetScrollPos(wx.VERTICAL)
posy -= self.itemsHeight
self.Scroll(0, posy)
event.Skip()
def MScrollDown(self, event):
posy = self.GetScrollPos(wx.VERTICAL)
posy += self.itemsHeight
self.Scroll(0, posy)
event.Skip()
def ScrollChildIntoView(self, child):
"""
Scrolls the panel such that the specified child window is in view.
"""
sppu_x, sppu_y = self.GetScrollPixelsPerUnit()
vs_x, vs_y = self.GetViewStart()
cr = child.GetRect()
clntsz = self.GetSize()
new_vs_x, new_vs_y = -1, -1
# is it before the left edge?
if cr.x < 0 < sppu_x:
new_vs_x = vs_x + (cr.x / sppu_x)
# is it above the top?
if cr.y < 0 < sppu_y:
new_vs_y = vs_y + (cr.y / sppu_y)
# For the right and bottom edges, scroll enough to show the
# whole control if possible, but if not just scroll such that
# the top/left edges are still visible
# is it past the right edge ?
if cr.right > clntsz.width and sppu_x > 0:
diff = (cr.right - clntsz.width + 1) / sppu_x
if cr.x - diff * sppu_x > 0:
new_vs_x = vs_x + diff
else:
new_vs_x = vs_x + (cr.x / sppu_x)
# is it below the bottom ?
if cr.bottom > clntsz.height and sppu_y > 0:
diff = (cr.bottom - clntsz.height + 1) / sppu_y
if cr.y - diff * sppu_y > 0:
new_vs_y = vs_y + diff
else:
new_vs_y = vs_y + (cr.y / sppu_y)
# if we need to adjust
if new_vs_x != -1 or new_vs_y != -1:
self.Scroll(new_vs_x, new_vs_y)
def AddWidget(self, widget):
widget.Reparent(self)
self._wList.append(widget)
self._wCount += 1
def GetWidgetList(self):
return self._wList
# Override this method if needed ( return False by default if we do not want to scroll to selected widget)
def IsWidgetSelectedByContext(self, widget):
return False
def RefreshList(self, doRefresh=False, doFocus=False):
maxy = 0
selected = None
for i in xrange(len(self._wList)):
iwidth, iheight = self._wList[i].GetSize()
xa, ya = self.CalcScrolledPosition((0, maxy))
self._wList[i].SetPosition((xa, ya))
if self.IsWidgetSelectedByContext(i):
selected = self._wList[i]
maxy += iheight
self.SetVirtualSize((1, maxy))
cwidth, cheight = self.GetVirtualSize()
if selected:
self.ScrollChildIntoView(selected)
# selected.SetFocus()
elif doFocus:
self.SetFocus()
for i in xrange(len(self._wList)):
iwidth, iheight = self._wList[i].GetSize()
self._wList[i].SetSize((cwidth, iheight))
if doRefresh is True:
self._wList[i].Refresh()
self.itemsHeight = max(self.itemsHeight, iheight - 1)
def RemoveWidget(self, child):
child.Destroy()
self._wList.remove(child)
def RemoveAllChildren(self):
for widget in self._wList:
widget.Destroy()
self._wList = []