class MapCalcFrame(wx.Frame):
"""Mapcalc Frame class. Calculator-style window to create and run
r(3).mapcalc statements.
"""
def __init__(self,
parent,
giface,
cmd,
id=wx.ID_ANY,
style=wx.DEFAULT_FRAME_STYLE | wx.RESIZE_BORDER,
**kwargs):
self.parent = parent
self._giface = giface
if self.parent:
self.log = self.parent.GetLogWindow()
else:
self.log = None
# grass command
self.cmd = cmd
if self.cmd == 'r.mapcalc':
self.rast3d = False
title = _('GRASS GIS Raster Map Calculator')
if self.cmd == 'r3.mapcalc':
self.rast3d = True
title = _('GRASS GIS 3D Raster Map Calculator')
wx.Frame.__init__(self, parent, id=id, title=title, **kwargs)
self.SetIcon(
wx.Icon(os.path.join(globalvar.ICONDIR, 'grass.ico'),
wx.BITMAP_TYPE_ICO))
self.panel = wx.Panel(parent=self, id=wx.ID_ANY)
self.CreateStatusBar()
#
# variables
#
self.heading = _('mapcalc statement')
self.funct_dict = {
'abs(x)': 'abs()',
'acos(x)': 'acos()',
'asin(x)': 'asin()',
'atan(x)': 'atan()',
'atan(x,y)': 'atan( , )',
'cos(x)': 'cos()',
'double(x)': 'double()',
'eval([x,y,...,]z)': 'eval()',
'exp(x)': 'exp()',
'exp(x,y)': 'exp( , )',
'float(x)': 'float()',
'graph(x,x1,y1[x2,y2..])': 'graph( , , )',
'if(x)': 'if()',
'if(x,a)': 'if( , )',
'if(x,a,b)': 'if( , , )',
'if(x,a,b,c)': 'if( , , , )',
'int(x)': 'int()',
'isnull(x)': 'isnull()',
'log(x)': 'log(',
'log(x,b)': 'log( , )',
'max(x,y[,z...])': 'max( , )',
'median(x,y[,z...])': 'median( , )',
'min(x,y[,z...])': 'min( , )',
'mode(x,y[,z...])': 'mode( , )',
'nmax(x,y[,z...])': 'nmax( , )',
'nmedian(x,y[,z...])': 'nmedian( , )',
'nmin(x,y[,z...])': 'nmin( , )',
'nmode(x,y[,z...])': 'nmode( , )',
'not(x)': 'not()',
'pow(x,y)': 'pow( , )',
'rand(a,b)': 'rand( , )',
'round(x)': 'round()',
'round(x,y)': 'round( , )',
'round(x,y,z)': 'round( , , )',
'sin(x)': 'sin()',
'sqrt(x)': 'sqrt()',
'tan(x)': 'tan()',
'xor(x,y)': 'xor( , )',
'row()': 'row()',
'col()': 'col()',
'nrows()': 'nrows()',
'ncols()': 'ncols()',
'x()': 'x()',
'y()': 'y()',
'ewres()': 'ewres()',
'nsres()': 'nsres()',
'area()': 'area()',
'null()': 'null()'
}
if self.rast3d:
self.funct_dict['z()'] = 'z()'
self.funct_dict['tbres()'] = 'tbres()'
element = 'raster_3d'
else:
element = 'cell'
# characters which can be in raster map name but the map name must be
# then quoted
self.charactersToQuote = '+-&!<>%~?^|'
# stores last typed map name in Select widget to distinguish typing
# from selection
self.lastMapName = ''
self.operatorBox = StaticBox(parent=self.panel,
id=wx.ID_ANY,
label=" %s " % _('Operators'))
self.outputBox = StaticBox(parent=self.panel,
id=wx.ID_ANY,
label=" %s " % _('Output'))
self.operandBox = StaticBox(parent=self.panel,
id=wx.ID_ANY,
label=" %s " % _('Operands'))
self.expressBox = StaticBox(parent=self.panel,
id=wx.ID_ANY,
label=" %s " % _('Expression'))
#
# Buttons
#
self.btn_clear = ClearButton(parent=self.panel)
self.btn_help = Button(parent=self.panel, id=wx.ID_HELP)
self.btn_run = Button(parent=self.panel, id=wx.ID_ANY, label=_("&Run"))
self.btn_run.SetDefault()
self.btn_close = CloseButton(parent=self.panel)
self.btn_save = Button(parent=self.panel, id=wx.ID_SAVE)
self.btn_save.SetToolTip(_('Save expression to file'))
self.btn_load = Button(parent=self.panel,
id=wx.ID_ANY,
label=_("&Load"))
self.btn_load.SetToolTip(_('Load expression from file'))
self.btn_copy = Button(parent=self.panel,
id=wx.ID_ANY,
label=_("Copy"))
self.btn_copy.SetToolTip(
_("Copy the current command string to the clipboard"))
self.btn = dict()
self.btn['pow'] = Button(parent=self.panel, id=wx.ID_ANY, label="^")
self.btn['pow'].SetToolTip(_('exponent'))
self.btn['div'] = Button(parent=self.panel, id=wx.ID_ANY, label="/")
self.btn['div'].SetToolTip(_('divide'))
self.btn['add'] = Button(parent=self.panel, id=wx.ID_ANY, label="+")
self.btn['add'].SetToolTip(_('add'))
self.btn['minus'] = Button(parent=self.panel, id=wx.ID_ANY, label="-")
self.btn['minus'].SetToolTip(_('subtract'))
self.btn['mod'] = Button(parent=self.panel, id=wx.ID_ANY, label="%")
self.btn['mod'].SetToolTip(_('modulus'))
self.btn['mult'] = Button(parent=self.panel, id=wx.ID_ANY, label="*")
self.btn['mult'].SetToolTip(_('multiply'))
self.btn['parenl'] = Button(parent=self.panel, id=wx.ID_ANY, label="(")
self.btn['parenr'] = Button(parent=self.panel, id=wx.ID_ANY, label=")")
self.btn['lshift'] = Button(parent=self.panel,
id=wx.ID_ANY,
label="<<")
self.btn['lshift'].SetToolTip(_('left shift'))
self.btn['rshift'] = Button(parent=self.panel,
id=wx.ID_ANY,
label=">>")
self.btn['rshift'].SetToolTip(_('right shift'))
self.btn['rshiftu'] = Button(parent=self.panel,
id=wx.ID_ANY,
label=">>>")
self.btn['rshiftu'].SetToolTip(_('right shift (unsigned)'))
self.btn['gt'] = Button(parent=self.panel, id=wx.ID_ANY, label=">")
self.btn['gt'].SetToolTip(_('greater than'))
self.btn['gteq'] = Button(parent=self.panel, id=wx.ID_ANY, label=">=")
self.btn['gteq'].SetToolTip(_('greater than or equal to'))
self.btn['lt'] = Button(parent=self.panel, id=wx.ID_ANY, label="<")
self.btn['lt'].SetToolTip(_('less than'))
self.btn['lteq'] = Button(parent=self.panel, id=wx.ID_ANY, label="<=")
self.btn['lteq'].SetToolTip(_('less than or equal to'))
self.btn['eq'] = Button(parent=self.panel, id=wx.ID_ANY, label="==")
self.btn['eq'].SetToolTip(_('equal to'))
self.btn['noteq'] = Button(parent=self.panel, id=wx.ID_ANY, label="!=")
self.btn['noteq'].SetToolTip(_('not equal to'))
self.btn['compl'] = Button(parent=self.panel, id=wx.ID_ANY, label="~")
self.btn['compl'].SetToolTip(_('one\'s complement'))
self.btn['not'] = Button(parent=self.panel, id=wx.ID_ANY, label="!")
self.btn['not'].SetToolTip(_('NOT'))
self.btn['andbit'] = Button(parent=self.panel,
id=wx.ID_ANY,
label='&&')
self.btn['andbit'].SetToolTip(_('bitwise AND'))
self.btn['orbit'] = Button(parent=self.panel, id=wx.ID_ANY, label="|")
self.btn['orbit'].SetToolTip(_('bitwise OR'))
self.btn['and'] = Button(parent=self.panel, id=wx.ID_ANY, label="&&&&")
self.btn['and'].SetToolTip(_('logical AND'))
self.btn['andnull'] = Button(parent=self.panel,
id=wx.ID_ANY,
label="&&&&&&")
self.btn['andnull'].SetToolTip(_('logical AND (ignores NULLs)'))
self.btn['or'] = Button(parent=self.panel, id=wx.ID_ANY, label="||")
self.btn['or'].SetToolTip(_('logical OR'))
self.btn['ornull'] = Button(parent=self.panel,
id=wx.ID_ANY,
label="|||")
self.btn['ornull'].SetToolTip(_('logical OR (ignores NULLs)'))
self.btn['cond'] = Button(parent=self.panel,
id=wx.ID_ANY,
label="a ? b : c")
self.btn['cond'].SetToolTip(_('conditional'))
#
# Text area
#
self.text_mcalc = TextCtrl(parent=self.panel,
id=wx.ID_ANY,
size=(-1, 100),
style=wx.TE_MULTILINE)
wx.CallAfter(self.text_mcalc.SetFocus)
#
# Map and function insertion text and ComboBoxes
self.newmaplabel = StaticText(parent=self.panel, id=wx.ID_ANY)
if self.rast3d:
self.newmaplabel.SetLabel(
_('Name for new 3D raster map to create'))
else:
self.newmaplabel.SetLabel(_('Name for new raster map to create'))
# As we can write only to current mapset, names should not be fully qualified
# to not confuse end user about writing in other mapset
self.newmaptxt = Select(parent=self.panel,
id=wx.ID_ANY,
size=(250, -1),
type=element,
multiple=False,
fullyQualified=False)
self.mapsellabel = StaticText(parent=self.panel, id=wx.ID_ANY)
if self.rast3d:
self.mapsellabel.SetLabel(_('Insert existing 3D raster map'))
else:
self.mapsellabel.SetLabel(_('Insert existing raster map'))
self.mapselect = Select(parent=self.panel,
id=wx.ID_ANY,
size=(250, -1),
type=element,
multiple=False)
self.functlabel = StaticText(parent=self.panel,
id=wx.ID_ANY,
label=_('Insert mapcalc function'))
self.function = wx.ComboBox(parent=self.panel,
id=wx.ID_ANY,
size=(250, -1),
choices=sorted(self.funct_dict.keys()),
style=wx.CB_DROPDOWN | wx.CB_READONLY
| wx.TE_PROCESS_ENTER)
self.overwrite = wx.CheckBox(
parent=self.panel,
id=wx.ID_ANY,
label=_("Allow output files to overwrite existing files"))
self.overwrite.SetValue(
UserSettings.Get(group='cmd', key='overwrite', subkey='enabled'))
self.randomSeed = wx.CheckBox(
parent=self.panel, label=_("Generate random seed for rand()"))
self.randomSeedStaticText = StaticText(parent=self.panel,
label=_("Seed:"))
self.randomSeedText = TextCtrl(parent=self.panel,
size=(100, -1),
validator=IntegerValidator())
self.randomSeedText.SetToolTip(_("Integer seed for rand() function"))
self.randomSeed.SetValue(True)
self.randomSeedStaticText.Disable()
self.randomSeedText.Disable()
self.addbox = wx.CheckBox(
parent=self.panel,
label=_('Add created raster map into layer tree'),
style=wx.NO_BORDER)
self.addbox.SetValue(
UserSettings.Get(group='cmd', key='addNewLayer', subkey='enabled'))
if not self.parent or self.parent.GetName() != 'LayerManager':
self.addbox.Hide()
#
# Bindings
#
for btn in self.btn.keys():
self.btn[btn].Bind(wx.EVT_BUTTON, self.AddMark)
self.btn_close.Bind(wx.EVT_BUTTON, self.OnClose)
self.btn_clear.Bind(wx.EVT_BUTTON, self.OnClear)
self.btn_run.Bind(wx.EVT_BUTTON, self.OnMCalcRun)
self.btn_help.Bind(wx.EVT_BUTTON, self.OnHelp)
self.btn_save.Bind(wx.EVT_BUTTON, self.OnSaveExpression)
self.btn_load.Bind(wx.EVT_BUTTON, self.OnLoadExpression)
self.btn_copy.Bind(wx.EVT_BUTTON, self.OnCopyCommand)
self.mapselect.Bind(wx.EVT_TEXT, self.OnSelect)
self.function.Bind(wx.EVT_COMBOBOX, self._return_funct)
self.function.Bind(wx.EVT_TEXT_ENTER, self.OnSelect)
self.newmaptxt.Bind(wx.EVT_TEXT, self.OnUpdateStatusBar)
self.text_mcalc.Bind(wx.EVT_TEXT, self.OnUpdateStatusBar)
self.overwrite.Bind(wx.EVT_CHECKBOX, self.OnUpdateStatusBar)
self.randomSeed.Bind(wx.EVT_CHECKBOX, self.OnUpdateStatusBar)
self.randomSeed.Bind(wx.EVT_CHECKBOX, self.OnSeedFlag)
self.randomSeedText.Bind(wx.EVT_TEXT, self.OnUpdateStatusBar)
# bind closing to ESC
self.Bind(wx.EVT_MENU, self.OnClose, id=wx.ID_CANCEL)
accelTableList = [(wx.ACCEL_NORMAL, wx.WXK_ESCAPE, wx.ID_CANCEL)]
accelTable = wx.AcceleratorTable(accelTableList)
self.SetAcceleratorTable(accelTable)
self._layout()
self.SetMinSize(self.panel.GetBestSize())
# workaround for http://trac.wxwidgets.org/ticket/13628
self.SetSize(self.panel.GetBestSize())
def _return_funct(self, event):
i = event.GetString()
self._addSomething(self.funct_dict[i])
# reset
win = self.FindWindowById(event.GetId())
win.SetValue('')
def _layout(self):
sizer = wx.BoxSizer(wx.VERTICAL)
controlSizer = wx.BoxSizer(wx.HORIZONTAL)
operatorSizer = wx.StaticBoxSizer(self.operatorBox, wx.HORIZONTAL)
outOpeSizer = wx.BoxSizer(wx.VERTICAL)
buttonSizer1 = wx.GridBagSizer(5, 1)
buttonSizer1.Add(self.btn['add'], pos=(0, 0))
buttonSizer1.Add(self.btn['minus'], pos=(0, 1))
buttonSizer1.Add(self.btn['mod'], pos=(5, 0))
buttonSizer1.Add(self.btn['mult'], pos=(1, 0))
buttonSizer1.Add(self.btn['div'], pos=(1, 1))
buttonSizer1.Add(self.btn['pow'], pos=(5, 1))
buttonSizer1.Add(self.btn['gt'], pos=(2, 0))
buttonSizer1.Add(self.btn['gteq'], pos=(2, 1))
buttonSizer1.Add(self.btn['eq'], pos=(4, 0))
buttonSizer1.Add(self.btn['lt'], pos=(3, 0))
buttonSizer1.Add(self.btn['lteq'], pos=(3, 1))
buttonSizer1.Add(self.btn['noteq'], pos=(4, 1))
buttonSizer2 = wx.GridBagSizer(5, 1)
buttonSizer2.Add(self.btn['and'], pos=(0, 0))
buttonSizer2.Add(self.btn['andbit'], pos=(1, 0))
buttonSizer2.Add(self.btn['andnull'], pos=(2, 0))
buttonSizer2.Add(self.btn['or'], pos=(0, 1))
buttonSizer2.Add(self.btn['orbit'], pos=(1, 1))
buttonSizer2.Add(self.btn['ornull'], pos=(2, 1))
buttonSizer2.Add(self.btn['lshift'], pos=(3, 0))
buttonSizer2.Add(self.btn['rshift'], pos=(3, 1))
buttonSizer2.Add(self.btn['rshiftu'], pos=(4, 0))
buttonSizer2.Add(self.btn['cond'], pos=(5, 0))
buttonSizer2.Add(self.btn['compl'], pos=(5, 1))
buttonSizer2.Add(self.btn['not'], pos=(4, 1))
outputSizer = wx.StaticBoxSizer(self.outputBox, wx.VERTICAL)
outputSizer.Add(self.newmaplabel,
flag=wx.ALIGN_CENTER | wx.TOP,
border=5)
outputSizer.Add(self.newmaptxt, flag=wx.EXPAND | wx.ALL, border=5)
operandSizer = wx.StaticBoxSizer(self.operandBox, wx.HORIZONTAL)
buttonSizer3 = wx.GridBagSizer(7, 1)
buttonSizer3.Add(self.functlabel,
pos=(0, 0),
span=(1, 2),
flag=wx.ALIGN_CENTER | wx.EXPAND)
buttonSizer3.Add(self.function, pos=(1, 0), span=(1, 2))
buttonSizer3.Add(self.mapsellabel,
pos=(2, 0),
span=(1, 2),
flag=wx.ALIGN_CENTER)
buttonSizer3.Add(self.mapselect, pos=(3, 0), span=(1, 2))
threebutton = wx.GridBagSizer(1, 2)
threebutton.Add(self.btn['parenl'],
pos=(0, 0),
span=(1, 1),
flag=wx.ALIGN_LEFT)
threebutton.Add(self.btn['parenr'],
pos=(0, 1),
span=(1, 1),
flag=wx.ALIGN_CENTER)
threebutton.Add(self.btn_clear,
pos=(0, 2),
span=(1, 1),
flag=wx.ALIGN_RIGHT)
buttonSizer3.Add(threebutton,
pos=(4, 0),
span=(1, 1),
flag=wx.ALIGN_CENTER)
buttonSizer4 = wx.BoxSizer(wx.HORIZONTAL)
buttonSizer4.Add(self.btn_load, flag=wx.ALL, border=5)
buttonSizer4.Add(self.btn_save, flag=wx.ALL, border=5)
buttonSizer4.Add(self.btn_copy, flag=wx.ALL, border=5)
buttonSizer4.AddSpacer(30)
buttonSizer4.Add(self.btn_help, flag=wx.ALL, border=5)
buttonSizer4.Add(self.btn_run, flag=wx.ALL, border=5)
buttonSizer4.Add(self.btn_close, flag=wx.ALL, border=5)
operatorSizer.Add(buttonSizer1,
proportion=0,
flag=wx.ALL | wx.EXPAND,
border=5)
operatorSizer.Add(buttonSizer2,
proportion=0,
flag=wx.TOP | wx.BOTTOM | wx.RIGHT | wx.EXPAND,
border=5)
operandSizer.Add(buttonSizer3, proportion=0, flag=wx.ALL, border=5)
controlSizer.Add(operatorSizer,
proportion=1,
flag=wx.RIGHT | wx.EXPAND,
border=5)
outOpeSizer.Add(outputSizer, proportion=0, flag=wx.EXPAND)
outOpeSizer.Add(operandSizer,
proportion=1,
flag=wx.EXPAND | wx.TOP,
border=5)
controlSizer.Add(outOpeSizer, proportion=0, flag=wx.EXPAND)
expressSizer = wx.StaticBoxSizer(self.expressBox, wx.HORIZONTAL)
expressSizer.Add(self.text_mcalc, proportion=1, flag=wx.EXPAND)
sizer.Add(controlSizer,
proportion=0,
flag=wx.EXPAND | wx.ALL,
border=5)
sizer.Add(expressSizer,
proportion=1,
flag=wx.EXPAND | wx.LEFT | wx.RIGHT,
border=5)
sizer.Add(buttonSizer4,
proportion=0,
flag=wx.ALIGN_RIGHT | wx.ALL,
border=3)
randomSizer = wx.BoxSizer(wx.HORIZONTAL)
randomSizer.Add(self.randomSeed,
proportion=0,
flag=wx.RIGHT | wx.ALIGN_CENTER_VERTICAL,
border=20)
randomSizer.Add(self.randomSeedStaticText,
proportion=0,
flag=wx.RIGHT | wx.ALIGN_CENTER_VERTICAL,
border=5)
randomSizer.Add(self.randomSeedText, proportion=0)
sizer.Add(randomSizer, proportion=0, flag=wx.LEFT | wx.RIGHT, border=5)
sizer.Add(self.overwrite,
proportion=0,
flag=wx.LEFT | wx.RIGHT,
border=5)
if self.addbox.IsShown():
sizer.Add(self.addbox,
proportion=0,
flag=wx.LEFT | wx.RIGHT,
border=5)
self.panel.SetAutoLayout(True)
self.panel.SetSizer(sizer)
sizer.Fit(self.panel)
self.Layout()
def AddMark(self, event):
"""Sends operators to insertion method
"""
if event.GetId() == self.btn['compl'].GetId():
mark = "~"
elif event.GetId() == self.btn['not'].GetId():
mark = "!"
elif event.GetId() == self.btn['pow'].GetId():
mark = "^"
elif event.GetId() == self.btn['div'].GetId():
mark = "/"
elif event.GetId() == self.btn['add'].GetId():
mark = "+"
elif event.GetId() == self.btn['minus'].GetId():
mark = "-"
elif event.GetId() == self.btn['mod'].GetId():
mark = "%"
elif event.GetId() == self.btn['mult'].GetId():
mark = "*"
elif event.GetId() == self.btn['lshift'].GetId():
mark = "<<"
elif event.GetId() == self.btn['rshift'].GetId():
mark = ">>"
elif event.GetId() == self.btn['rshiftu'].GetId():
mark = ">>>"
elif event.GetId() == self.btn['gt'].GetId():
mark = ">"
elif event.GetId() == self.btn['gteq'].GetId():
mark = ">="
elif event.GetId() == self.btn['lt'].GetId():
mark = "<"
elif event.GetId() == self.btn['lteq'].GetId():
mark = "<="
elif event.GetId() == self.btn['eq'].GetId():
mark = "=="
elif event.GetId() == self.btn['noteq'].GetId():
mark = "!="
elif event.GetId() == self.btn['andbit'].GetId():
mark = "&"
elif event.GetId() == self.btn['orbit'].GetId():
mark = "|"
elif event.GetId() == self.btn['or'].GetId():
mark = "||"
elif event.GetId() == self.btn['ornull'].GetId():
mark = "|||"
elif event.GetId() == self.btn['and'].GetId():
mark = "&&"
elif event.GetId() == self.btn['andnull'].GetId():
mark = "&&&"
elif event.GetId() == self.btn['cond'].GetId():
mark = " ? : "
elif event.GetId() == self.btn['parenl'].GetId():
mark = "("
elif event.GetId() == self.btn['parenr'].GetId():
mark = ")"
self._addSomething(mark)
# unused
# def OnSelectTextEvt(self, event):
# """Checks if user is typing or the event was emited by map selection.
# Prevents from changing focus.
# """
# item = self.mapselect.GetValue().strip()
# if not (abs(len(item) - len(self.lastMapName)) == 1 and \
# self.lastMapName in item or item in self.lastMapName):
# self.OnSelect(event)
# self.lastMapName = item
def OnSelect(self, event):
"""Gets raster map or function selection and send it to
insertion method.
Checks for characters which can be in raster map name but
the raster map name must be then quoted.
"""
win = self.FindWindowById(event.GetId())
item = win.GetValue().strip()
if any((char in item) for char in self.charactersToQuote):
item = '"' + item + '"'
self._addSomething(item)
win.ChangeValue('') # reset
# Map selector likes to keep focus. Set it back to expression input area
wx.CallAfter(self.text_mcalc.SetFocus)
def OnUpdateStatusBar(self, event):
"""Update statusbar text"""
command = self._getCommand()
self.SetStatusText(command)
event.Skip()
def OnSeedFlag(self, event):
checked = self.randomSeed.IsChecked()
self.randomSeedText.Enable(not checked)
self.randomSeedStaticText.Enable(not checked)
event.Skip()
def _getCommand(self):
"""Returns entire command as string."""
expr = self.text_mcalc.GetValue().strip().replace("\n", " ")
cmd = 'r.mapcalc'
if self.rast3d:
cmd = 'r3.mapcalc'
overwrite = ''
if self.overwrite.IsChecked():
overwrite = ' --overwrite'
seed_flag = seed = ''
if re.search(pattern="rand *\(.+\)", string=expr):
if self.randomSeed.IsChecked():
seed_flag = ' -s'
else:
seed = " seed={val}".format(
val=self.randomSeedText.GetValue().strip())
return ('{cmd} expression="{new} = {expr}"{seed}{seed_flag}{overwrite}'
.format(cmd=cmd,
expr=expr,
new=self.newmaptxt.GetValue(),
seed_flag=seed_flag,
seed=seed,
overwrite=overwrite))
def _addSomething(self, what):
"""Inserts operators, map names, and functions into text area
"""
mcalcstr = self.text_mcalc.GetValue()
position = self.text_mcalc.GetInsertionPoint()
newmcalcstr = mcalcstr[:position]
position_offset = 0
try:
if newmcalcstr[-1] != ' ':
newmcalcstr += ' '
position_offset += 1
except:
pass
newmcalcstr += what
# Do not add extra space if there is already one
try:
if newmcalcstr[-1] != ' ' and mcalcstr[position] != ' ':
newmcalcstr += ' '
except:
newmcalcstr += ' '
newmcalcstr += mcalcstr[position:]
self.text_mcalc.SetValue(newmcalcstr)
if len(what) > 0:
match = re.search(pattern="\(.*\)", string=what)
if match:
position_offset += match.start() + 1
else:
position_offset += len(what)
try:
if newmcalcstr[position + position_offset] == ' ':
position_offset += 1
except:
pass
self.text_mcalc.SetInsertionPoint(position + position_offset)
self.text_mcalc.Update()
self.text_mcalc.SetFocus()
def OnMCalcRun(self, event):
"""Builds and runs r.mapcalc statement
"""
name = self.newmaptxt.GetValue().strip()
if not name:
GError(parent=self,
message=_("You must enter the name of "
"a new raster map to create."))
return
if not (name[0] == '"' and name[-1] == '"') and any(
(char in name) for char in self.charactersToQuote):
name = '"' + name + '"'
expr = self.text_mcalc.GetValue().strip().replace("\n", " ")
if not expr:
GError(parent=self,
message=_("You must enter an expression "
"to create a new raster map."))
return
seed_flag = seed = None
if re.search(pattern="rand *\(.+\)", string=expr):
if self.randomSeed.IsChecked():
seed_flag = '-s'
else:
seed = self.randomSeedText.GetValue().strip()
if self.log:
cmd = [self.cmd]
if seed_flag:
cmd.append('-s')
if seed:
cmd.append("seed={val}".format(val=seed))
if self.overwrite.IsChecked():
cmd.append('--overwrite')
cmd.append(str('expression=%s = %s' % (name, expr)))
self.log.RunCmd(cmd, onDone=self.OnDone)
self.parent.Raise()
else:
if self.overwrite.IsChecked():
overwrite = True
else:
overwrite = False
params = dict(expression="%s=%s" % (name, expr),
overwrite=overwrite)
if seed_flag:
params['flags'] = 's'
if seed:
params['seed'] = seed
RunCommand(self.cmd, **params)
def OnDone(self, event):
"""Add create map to the layer tree
Sends the mapCreated signal from the grass interface.
"""
if event.returncode != 0:
return
name = self.newmaptxt.GetValue().strip(
' "') + '@' + grass.gisenv()['MAPSET']
ltype = 'raster'
if self.rast3d:
ltype = 'raster_3d'
self._giface.mapCreated.emit(name=name,
ltype=ltype,
add=self.addbox.IsChecked())
gisenv = grass.gisenv()
self._giface.grassdbChanged.emit(grassdb=gisenv['GISDBASE'],
location=gisenv['LOCATION_NAME'],
mapset=gisenv['MAPSET'],
action='new',
map=name.split('@')[0],
element=ltype)
def OnSaveExpression(self, event):
"""Saves expression to file
"""
mctxt = self.newmaptxt.GetValue() + ' = ' + self.text_mcalc.GetValue(
) + os.linesep
# dialog
dlg = wx.FileDialog(
parent=self,
message=_("Choose a file name to save the expression"),
wildcard=_("Expression file (*)|*"),
style=wx.FD_SAVE | wx.FD_OVERWRITE_PROMPT)
if dlg.ShowModal() == wx.ID_OK:
path = dlg.GetPath()
if not path:
dlg.Destroy()
return
try:
fobj = open(path, 'w')
fobj.write(mctxt)
finally:
fobj.close()
dlg.Destroy()
def OnLoadExpression(self, event):
"""Load expression from file
"""
dlg = wx.FileDialog(
parent=self,
message=_("Choose a file name to load the expression"),
wildcard=_("Expression file (*)|*"),
style=wx.FD_OPEN)
if dlg.ShowModal() == wx.ID_OK:
path = dlg.GetPath()
if not path:
dlg.Destroy()
return
try:
fobj = open(path, 'r')
mctxt = fobj.read()
finally:
fobj.close()
try:
result, exp = mctxt.split('=', 1)
except ValueError:
result = ''
exp = mctxt
self.newmaptxt.SetValue(result.strip())
self.text_mcalc.SetValue(exp.strip())
self.text_mcalc.SetFocus()
self.text_mcalc.SetInsertionPointEnd()
dlg.Destroy()
def OnCopyCommand(self, event):
command = self._getCommand()
cmddata = wx.TextDataObject()
cmddata.SetText(command)
if wx.TheClipboard.Open():
wx.TheClipboard.SetData(cmddata)
wx.TheClipboard.Close()
self.SetStatusText(
_("'{cmd}' copied to clipboard").format(cmd=command))
def OnClear(self, event):
"""Clears text area
"""
self.text_mcalc.SetValue('')
def OnHelp(self, event):
"""Launches r.mapcalc help
"""
RunCommand('g.manual', parent=self, entry=self.cmd)
def OnClose(self, event):
"""Close window"""
self.Destroy()
