Files
pyfa/gui/builtinViews/fittingView.py
2014-12-31 20:18:16 -05:00

783 lines
27 KiB
Python

#===============================================================================
# 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/>.
#===============================================================================
import wx
import wx.lib.newevent
import service
import gui.mainFrame
import gui.marketBrowser
import gui.display as d
from gui.contextMenu import ContextMenu
import gui.shipBrowser
import gui.multiSwitch
from eos.types import Slot, Rack, Module
from gui.builtinViewColumns.state import State
from gui import bitmapLoader
import gui.builtinViews.emptyView
from gui.utils.exportHtml import exportHtml
import gui.globalEvents as GE
#Tab spawning handler
class FitSpawner(gui.multiSwitch.TabSpawner):
def __init__(self, multiSwitch):
self.multiSwitch = multiSwitch
self.mainFrame = mainFrame = gui.mainFrame.MainFrame.getInstance()
mainFrame.Bind(gui.shipBrowser.EVT_FIT_SELECTED, self.fitSelected)
self.multiSwitch.tabsContainer.handleDrag = self.handleDrag
def fitSelected(self, event):
count = -1
for index, page in enumerate(self.multiSwitch.pages):
try:
if page.activeFitID == event.fitID:
count += 1
self.multiSwitch.SetSelection(index)
wx.PostEvent(self.mainFrame, GE.FitChanged(fitID=event.fitID))
break
except:
pass
if count < 0:
startup = getattr(event, "startup", False) # see OpenFitsThread in gui.mainFrame
mstate = wx.GetMouseState()
if mstate.CmdDown() or mstate.MiddleDown() or startup:
self.multiSwitch.AddPage()
view = FittingView(self.multiSwitch)
self.multiSwitch.ReplaceActivePage(view)
view.fitSelected(event)
def handleDrag(self, type, fitID):
if type == "fit":
for page in self.multiSwitch.pages:
if isinstance(page, FittingView) and page.activeFitID == fitID:
index = self.multiSwitch.GetPageIndex(page)
self.multiSwitch.SetSelection(index)
wx.PostEvent(self.mainFrame, GE.FitChanged(fitID=fitID))
return
elif isinstance(page, gui.builtinViews.emptyView.BlankPage):
view = FittingView(self.multiSwitch)
self.multiSwitch.ReplaceActivePage(view)
view.handleDrag(type, fitID)
return
view = FittingView(self.multiSwitch)
self.multiSwitch.AddPage(view)
view.handleDrag(type, fitID)
FitSpawner.register()
#Drag'n'drop handler
class FittingViewDrop(wx.PyDropTarget):
def __init__(self, dropFn):
wx.PyDropTarget.__init__(self)
self.dropFn = dropFn
# this is really transferring an EVE itemID
self.dropData = wx.PyTextDataObject()
self.SetDataObject(self.dropData)
def OnData(self, x, y, t):
if self.GetData():
data = self.dropData.GetText().split(':')
self.dropFn(x, y, data)
return t
class FittingView(d.Display):
DEFAULT_COLS = ["State",
"Ammo Icon",
"Base Icon",
"Base Name",
"attr:power",
"attr:cpu",
"Capacitor Usage",
"Max Range",
"Miscellanea",
"Price",
"Ammo",
]
def __init__(self, parent):
d.Display.__init__(self, parent, size = (0,0), style = wx.BORDER_NONE)
self.Show(False)
self.parent = parent
self.mainFrame.Bind(GE.FIT_CHANGED, self.fitChanged)
self.mainFrame.Bind(gui.shipBrowser.EVT_FIT_RENAMED, self.fitRenamed)
self.mainFrame.Bind(gui.shipBrowser.EVT_FIT_REMOVED, self.fitRemoved)
self.mainFrame.Bind(gui.marketBrowser.ITEM_SELECTED, self.appendItem)
self.Bind(wx.EVT_LEFT_DCLICK, self.removeItem)
self.Bind(wx.EVT_LIST_BEGIN_DRAG, self.startDrag)
if "__WXGTK__" in wx.PlatformInfo:
self.Bind(wx.EVT_RIGHT_UP, self.scheduleMenu)
else:
self.Bind(wx.EVT_RIGHT_DOWN, self.scheduleMenu)
self.SetDropTarget(FittingViewDrop(self.handleListDrag))
self.activeFitID = None
self.FVsnapshot = None
self.itemCount = 0
self.itemRect = 0
self.hoveredRow = None
self.hoveredColumn = None
self.Bind(wx.EVT_KEY_UP, self.kbEvent)
self.Bind(wx.EVT_LEFT_DOWN, self.click)
self.Bind(wx.EVT_RIGHT_DOWN, self.click)
self.Bind(wx.EVT_MIDDLE_DOWN, self.click)
self.Bind(wx.EVT_SHOW, self.OnShow)
self.Bind(wx.EVT_MOTION, self.OnMouseMove)
self.Bind(wx.EVT_LEAVE_WINDOW, self.OnLeaveWindow)
self.parent.Bind(gui.chromeTabs.EVT_NOTEBOOK_PAGE_CHANGED, self.pageChanged)
def OnLeaveWindow(self, event):
self.SetToolTip(None)
self.hoveredRow = None
self.hoveredColumn = None
event.Skip()
def OnMouseMove(self, event):
row, _, col = self.HitTestSubItem(event.Position)
if row != self.hoveredRow or col != self.hoveredColumn:
if self.ToolTip is not None:
self.SetToolTip(None)
else:
self.hoveredRow = row
self.hoveredColumn = col
if row != -1 and row not in self.blanks and col != -1 and col < len(self.DEFAULT_COLS):
mod = self.mods[self.GetItemData(row)]
if self.DEFAULT_COLS[col] == "Miscellanea":
tooltip = self.activeColumns[col].getToolTip(mod)
if tooltip is not None:
self.SetToolTipString(tooltip)
else:
self.SetToolTip(None)
else:
self.SetToolTip(None)
else:
self.SetToolTip(None)
event.Skip()
def handleListDrag(self, x, y, data):
'''
Handles dragging of items from various pyfa displays which support it
data is list with two items:
data[0] is hard-coded str of originating source
data[1] is typeID or index of data we want to manipulate
'''
if data[0] == "fitting":
self.swapItems(x, y, int(data[1]))
elif data[0] == "cargo":
self.swapCargo(x, y, int(data[1]))
elif data[0] == "market":
wx.PostEvent(self.mainFrame, gui.marketBrowser.ItemSelected(itemID=int(data[1])))
def handleDrag(self, type, fitID):
#Those are drags coming from pyfa sources, NOT builtin wx drags
if type == "fit":
wx.PostEvent(self.mainFrame, gui.shipBrowser.FitSelected(fitID=fitID))
def Destroy(self):
self.parent.Unbind(gui.chromeTabs.EVT_NOTEBOOK_PAGE_CHANGED, handler=self.pageChanged)
self.mainFrame.Unbind(GE.FIT_CHANGED, handler=self.fitChanged)
self.mainFrame.Unbind(gui.shipBrowser.EVT_FIT_RENAMED, handler=self.fitRenamed)
self.mainFrame.Unbind(gui.shipBrowser.EVT_FIT_REMOVED, handler=self.fitRemoved)
self.mainFrame.Unbind(gui.marketBrowser.ITEM_SELECTED, handler=self.appendItem)
d.Display.Destroy(self)
def pageChanged(self, event):
if self.parent.IsActive(self):
fitID = self.getActiveFit()
sFit = service.Fit.getInstance()
sFit.switchFit(fitID)
wx.PostEvent(self.mainFrame, GE.FitChanged(fitID=fitID))
event.Skip()
def getActiveFit(self):
return self.activeFitID
def startDrag(self, event):
row = event.GetIndex()
if row != -1 and row not in self.blanks:
data = wx.PyTextDataObject()
data.SetText("fitting:"+str(self.mods[row].position))
dropSource = wx.DropSource(self)
dropSource.SetData(data)
res = dropSource.DoDragDrop()
def getSelectedMods(self):
sel = []
row = self.GetFirstSelected()
while row != -1:
sel.append(self.mods[self.GetItemData(row)])
row = self.GetNextSelected(row)
return sel
def kbEvent(self,event):
keycode = event.GetKeyCode()
if keycode == wx.WXK_DELETE or keycode == wx.WXK_NUMPAD_DELETE:
row = self.GetFirstSelected()
firstSel = row
while row != -1:
if row not in self.blanks:
self.removeModule(self.mods[row])
self.Select(row,0)
row = self.GetNextSelected(row)
event.Skip()
def fitRemoved(self, event):
'''
If fit is removed and active, the page is deleted.
We also refresh the fit of the new current page in case
delete fit caused change in stats (projected)
'''
fitID = event.fitID
if fitID == self.getActiveFit():
self.parent.DeletePage(self.parent.GetPageIndex(self))
try:
# Sometimes there is no active page after deletion, hence the try block
sFit = service.Fit.getInstance()
sFit.refreshFit(self.getActiveFit())
wx.PostEvent(self.mainFrame, GE.FitChanged(fitID=self.activeFitID))
except wx._core.PyDeadObjectError:
pass
event.Skip()
def fitRenamed(self, event):
fitID = event.fitID
if fitID == self.getActiveFit():
self.updateTab()
event.Skip()
def fitSelected(self, event):
if self.parent.IsActive(self):
fitID = event.fitID
startup = getattr(event, "startup", False)
self.activeFitID = fitID
sFit = service.Fit.getInstance()
self.updateTab()
if not startup or startup == 2: # see OpenFitsThread in gui.mainFrame
self.Show(fitID is not None)
self.slotsChanged()
sFit.switchFit(fitID)
wx.PostEvent(self.mainFrame, GE.FitChanged(fitID=fitID))
event.Skip()
def updateTab(self):
sFit = service.Fit.getInstance()
fit = sFit.getFit(self.getActiveFit())
bitmap = bitmapLoader.getImage("race_%s_small" % fit.ship.item.race, "icons")
text = "%s: %s" % (fit.ship.item.name, fit.name)
pageIndex = self.parent.GetPageIndex(self)
if pageIndex is not None:
self.parent.SetPageTextIcon(pageIndex, text, bitmap)
def appendItem(self, event):
if self.parent.IsActive(self):
itemID = event.itemID
fitID = self.activeFitID
if fitID != None:
sFit = service.Fit.getInstance()
if sFit.isAmmo(itemID):
modules = []
sel = self.GetFirstSelected()
while sel != -1 and sel not in self.blanks:
modules.append(self.mods[self.GetItemData(sel)])
sel = self.GetNextSelected(sel)
sFit.setAmmo(fitID, itemID, modules)
wx.PostEvent(self.mainFrame, GE.FitChanged(fitID=fitID))
else:
populate = sFit.appendModule(fitID, itemID)
if populate is not None:
self.slotsChanged()
wx.PostEvent(self.mainFrame, GE.FitChanged(fitID=fitID))
event.Skip()
def removeItem(self, event):
row, _ = self.HitTest(event.Position)
if row != -1 and row not in self.blanks:
col = self.getColumn(event.Position)
if col != self.getColIndex(State):
self.removeModule(self.mods[row])
else:
if "wxMSW" in wx.PlatformInfo:
self.click(event)
def removeModule(self, module):
sFit = service.Fit.getInstance()
fit = sFit.getFit(self.activeFitID)
populate = sFit.removeModule(self.activeFitID, fit.modules.index(module))
if populate is not None:
self.slotsChanged()
wx.PostEvent(self.mainFrame, GE.FitChanged(fitID=self.activeFitID))
def swapCargo(self, x, y, srcIdx):
'''Swap a module from cargo to fitting window'''
mstate = wx.GetMouseState()
dstRow, _ = self.HitTest((x, y))
if dstRow != -1 and dstRow not in self.blanks:
module = self.mods[dstRow]
sFit = service.Fit.getInstance()
sFit.moveCargoToModule(self.mainFrame.getActiveFit(), module.position, srcIdx, mstate.CmdDown() and module.isEmpty)
wx.PostEvent(self.mainFrame, GE.FitChanged(fitID=self.mainFrame.getActiveFit()))
def swapItems(self, x, y, srcIdx):
'''Swap two modules in fitting window'''
mstate = wx.GetMouseState()
sFit = service.Fit.getInstance()
fit = sFit.getFit(self.activeFitID)
if mstate.CmdDown():
clone = True
else:
clone = False
dstRow, _ = self.HitTest((x, y))
if dstRow != -1 and dstRow not in self.blanks:
mod1 = fit.modules[srcIdx]
mod2 = self.mods[dstRow]
# can't swap modules to different racks
if mod1.slot != mod2.slot:
return
if clone and mod2.isEmpty:
sFit.cloneModule(self.mainFrame.getActiveFit(), mod1.position, mod2.position)
else:
sFit.swapModules(self.mainFrame.getActiveFit(), mod1.position, mod2.position)
wx.PostEvent(self.mainFrame, GE.FitChanged(fitID=self.mainFrame.getActiveFit()))
def generateMods(self):
'''
Generate module list.
This also injects dummy modules to visually separate racks. These modules are only
known to the display, and not the backend, so it's safe.
'''
sFit = service.Fit.getInstance()
fit = sFit.getFit(self.activeFitID)
slotOrder = [Slot.SUBSYSTEM, Slot.HIGH, Slot.MED, Slot.LOW, Slot.RIG]
if fit is not None:
self.mods = fit.modules[:]
self.mods.sort(key=lambda mod: (slotOrder.index(mod.slot), mod.position))
# Blanks is a list of indexes that mark non-module positions (such
# as Racks and tactical Modes. This allows us to skip over common
# module operations such as swapping, removing, copying, etc. that
# would otherwise cause complications
self.blanks = [] # preliminary markers where blanks will be inserted
if sFit.serviceFittingOptions["rackSlots"]:
# flag to know when to add blanks, based on previous slot
slotDivider = None if sFit.serviceFittingOptions["rackLabels"] else self.mods[0].slot
# first loop finds where slot dividers must go before modifying self.mods
for i, mod in enumerate(self.mods):
if mod.slot != slotDivider:
slotDivider = mod.slot
self.blanks.append((i, slotDivider)) # where and what
# second loop modifies self.mods, rewrites self.blanks to represent actual index of blanks
for i, (x, slot) in enumerate(self.blanks):
self.blanks[i] = x+i # modify blanks with actual index
self.mods.insert(x+i, Rack.buildRack(slot))
if fit.mode:
# Modes are special snowflakes and need a little manual loving
# We basically append the Mode rack and Mode to the modules
# while also marking their positions in the Blanks list
if sFit.serviceFittingOptions["rackSlots"]:
self.blanks.append(len(self.mods))
self.mods.append(Rack.buildRack(Slot.MODE))
self.blanks.append(len(self.mods))
self.mods.append(fit.mode)
else:
self.mods = None
def slotsChanged(self):
self.generateMods()
self.populate(self.mods)
def fitChanged(self, event):
try:
if self.activeFitID is not None and self.activeFitID == event.fitID:
self.generateMods()
if self.GetItemCount() != len(self.mods):
# This only happens when turning on/off slot divisions
self.populate(self.mods)
self.refresh(self.mods)
exportHtml.getInstance().refreshFittingHtml()
self.Show(self.activeFitID is not None and self.activeFitID == event.fitID)
except wx._core.PyDeadObjectError:
pass
finally:
event.Skip()
def scheduleMenu(self, event):
event.Skip()
if self.getColumn(event.Position) != self.getColIndex(State):
wx.CallAfter(self.spawnMenu)
def spawnMenu(self):
if self.activeFitID is None:
return
sMkt = service.Market.getInstance()
selection = []
sel = self.GetFirstSelected()
contexts = []
while sel != -1 and sel not in self.blanks:
mod = self.mods[self.GetItemData(sel)]
if not mod.isEmpty:
srcContext = "fittingModule"
itemContext = sMkt.getCategoryByItem(mod.item).name
fullContext = (srcContext, itemContext)
if not srcContext in tuple(fCtxt[0] for fCtxt in contexts):
contexts.append(fullContext)
if mod.charge is not None:
srcContext = "fittingCharge"
itemContext = sMkt.getCategoryByItem(mod.charge).name
fullContext = (srcContext, itemContext)
if not srcContext in tuple(fCtxt[0] for fCtxt in contexts):
contexts.append(fullContext)
selection.append(mod)
sel = self.GetNextSelected(sel)
contexts.append(("fittingShip", "Ship"))
menu = ContextMenu.getMenu(selection, *contexts)
self.PopupMenu(menu)
def click(self, event):
'''
Handle click event on modules.
This is only useful for the State column. If multiple items are selected,
and we have clicked the State column, iterate through the selections and
change State
'''
row, _, col = self.HitTestSubItem(event.Position)
# only do State column and ignore invalid rows
if row != -1 and row not in self.blanks and col == self.getColIndex(State):
sel = []
curr = self.GetFirstSelected()
while curr != -1 and row not in self.blanks :
sel.append(curr)
curr = self.GetNextSelected(curr)
if row not in sel:
mods = [self.mods[self.GetItemData(row)]]
else:
mods = self.getSelectedMods()
sFit = service.Fit.getInstance()
fitID = self.mainFrame.getActiveFit()
ctrl = wx.GetMouseState().CmdDown() or wx.GetMouseState().MiddleDown()
click = "ctrl" if ctrl is True else "right" if event.Button == 3 else "left"
sFit.toggleModulesState(fitID, self.mods[self.GetItemData(row)], mods, click)
wx.PostEvent(self.mainFrame, GE.FitChanged(fitID=self.mainFrame.getActiveFit()))
else:
event.Skip()
slotColourMap = {1: wx.Colour(250, 235, 204), # yellow = low slots
2: wx.Colour(188,215,241), # blue = mid slots
3: wx.Colour(235,204,209), # red = high slots
4: '',
5: ''}
def slotColour(self, slot):
return self.slotColourMap[slot] or self.GetBackgroundColour()
def refresh(self, stuff):
'''
Displays fitting
Sends data to d.Display.refresh where the rows and columns are set up, then does a
bit of post-processing (colors)
'''
self.Freeze()
d.Display.refresh(self, stuff)
sFit = service.Fit.getInstance()
fit = sFit.getFit(self.activeFitID)
slotMap = {}
# test for too many modules (happens with t3s / CCP change in slot layout)
for slotType in Slot.getTypes():
slot = Slot.getValue(slotType)
slotMap[slot] = fit.getSlotsFree(slot) < 0
font = (self.GetClassDefaultAttributes()).font
for i, mod in enumerate(self.mods):
self.SetItemBackgroundColour(i, self.GetBackgroundColour())
# only consider changing color if we're dealing with a Module
if type(mod) is Module:
if slotMap[mod.slot]: # Color too many modules as red
self.SetItemBackgroundColour(i, wx.Colour(204, 51, 51))
elif sFit.serviceFittingOptions["colorFitBySlot"]: # Color by slot it enabled
self.SetItemBackgroundColour(i, self.slotColour(mod.slot))
# Set rack face to bold
if isinstance(mod, Rack) and \
sFit.serviceFittingOptions["rackSlots"] and \
sFit.serviceFittingOptions["rackLabels"]:
font.SetWeight(wx.FONTWEIGHT_BOLD)
self.SetItemFont(i, font)
else:
font.SetWeight(wx.FONTWEIGHT_NORMAL)
self.SetItemFont(i, font)
self.Thaw()
self.itemCount = self.GetItemCount()
self.itemRect = self.GetItemRect(0)
if 'wxMac' in wx.PlatformInfo:
try:
self.MakeSnapshot()
except:
pass
def OnShow(self, event):
if not event.GetShow():
try:
self.MakeSnapshot()
except:
pass
event.Skip()
def Snapshot(self):
return self.FVsnapshot
def MakeSnapshot(self, maxColumns = 1337):
if self.FVsnapshot:
del self.FVsnapshot
tbmp = wx.EmptyBitmap(16,16)
tdc = wx.MemoryDC()
tdc.SelectObject(tbmp)
font = wx.SystemSettings_GetFont(wx.SYS_DEFAULT_GUI_FONT)
tdc.SetFont(font)
columnsWidths = []
for i in xrange(len(self.DEFAULT_COLS)):
columnsWidths.append(0)
sFit = service.Fit.getInstance()
try:
fit = sFit.getFit(self.activeFitID)
except:
return
if fit is None:
return
slotMap = {}
for slotType in Slot.getTypes():
slot = Slot.getValue(slotType)
slotMap[slot] = fit.getSlotsFree(slot) < 0
padding = 2
isize = 16
headerSize = max(isize, tdc.GetTextExtent("W")[0]) + padding * 2
maxWidth = 0
maxRowHeight = isize
rows = 0
for id,st in enumerate(self.mods):
for i, col in enumerate(self.activeColumns):
if i>maxColumns:
break
name = col.getText(st)
if not isinstance(name, basestring):
name = ""
nx,ny = tdc.GetTextExtent(name)
imgId = col.getImageId(st)
cw = 0
if imgId != -1:
cw += isize + padding
if name != "":
cw += nx + 4*padding
if imgId == -1 and name == "":
cw += isize +padding
maxRowHeight = max(ny, maxRowHeight)
columnsWidths[i] = max(columnsWidths[i], cw)
rows += 1
render = wx.RendererNative.Get()
#Fix column widths (use biggest between header or items)
for i, col in enumerate(self.activeColumns):
if i > maxColumns:
break
name = col.columnText
imgId = col.imageId
if not isinstance(name, basestring):
name = ""
opts = wx.HeaderButtonParams()
if name != "":
opts.m_labelText = name
if imgId != -1:
opts.m_labelBitmap = wx.EmptyBitmap(isize,isize)
width = render.DrawHeaderButton(self, tdc, (0, 0, 16, 16),
sortArrow = wx.HDR_SORT_ICON_NONE, params = opts)
columnsWidths[i] = max(columnsWidths[i], width)
tdc.SelectObject(wx.NullBitmap)
maxWidth = padding * 2
for i in xrange(len(self.DEFAULT_COLS)):
if i > maxColumns:
break
maxWidth += columnsWidths[i]
mdc = wx.MemoryDC()
mbmp = wx.EmptyBitmap(maxWidth, (maxRowHeight) * rows + padding*4 + headerSize)
mdc.SelectObject(mbmp)
mdc.SetBackground(wx.Brush(wx.SystemSettings_GetColour(wx.SYS_COLOUR_WINDOW)))
mdc.Clear()
mdc.SetFont(font)
mdc.SetTextForeground(wx.SystemSettings_GetColour(wx.SYS_COLOUR_WINDOWTEXT))
cx = padding
for i, col in enumerate(self.activeColumns):
if i > maxColumns:
break
name = col.columnText
imgId = col.imageId
if not isinstance(name, basestring):
name = ""
opts = wx.HeaderButtonParams()
opts.m_labelAlignment = wx.ALIGN_LEFT
if name != "":
opts.m_labelText = name
if imgId != -1:
bmp = col.bitmap
opts.m_labelBitmap = bmp
width = render.DrawHeaderButton (self, mdc, (cx, padding, columnsWidths[i], headerSize), wx.CONTROL_CURRENT,
sortArrow = wx.HDR_SORT_ICON_NONE, params = opts)
cx += columnsWidths[i]
brush = wx.Brush(wx.Colour(224, 51, 51))
pen = wx.Pen(wx.Colour(224, 51, 51))
mdc.SetPen(pen)
mdc.SetBrush(brush)
cy = padding*2 + headerSize
for id,st in enumerate(self.mods):
cx = padding
if slotMap[st.slot]:
mdc.DrawRectangle(cx,cy,maxWidth - cx,maxRowHeight)
for i, col in enumerate(self.activeColumns):
if i>maxColumns:
break
name = col.getText(st)
if not isinstance(name, basestring):
name = ""
imgId = col.getImageId(st)
tcx = cx
if imgId != -1:
self.imageList.Draw(imgId,mdc,cx,cy,wx.IMAGELIST_DRAW_TRANSPARENT,False)
tcx += isize + padding
if name != "":
nx,ny = mdc.GetTextExtent(name)
rect = wx.Rect()
rect.top = cy
rect.left = cx + 2*padding
rect.width = nx
rect.height = maxRowHeight + padding
mdc.DrawLabel(name, rect, wx.ALIGN_CENTER_VERTICAL)
tcx += nx + padding
cx += columnsWidths[i]
cy += maxRowHeight
mdc.SelectObject(wx.NullBitmap)
self.FVsnapshot = mbmp