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|
"""!
@package mcalc_builder.py
@brief Map calculator, wrapper for r.mapcalc
Classes:
- MapCalcFrame
(C) 2008, 2011 by the GRASS Development Team
This program is free software under the GNU General Public License
(>=v2). Read the file COPYING that comes with GRASS for details.
@author Michael Barton, Arizona State University
@author Martin Landa <landa.martin gmail.com>
@author Tim Michelsen (load/save expression)
"""
import os
import sys
import time
import globalvar
import wx
import grass.script as grass
import gcmd
import gselect
try:
import subprocess
except:
sys.path.append(os.path.join(globalvar.ETCWXDIR, "compat"))
import subprocess
from preferences import globalSettings as UserSettings
class MapCalcFrame(wx.Frame):
"""!Mapcalc Frame class. Calculator-style window to create and run
r(3).mapcalc statements.
"""
def __init__(self, parent, cmd, id = wx.ID_ANY,
style = wx.DEFAULT_FRAME_STYLE | wx.RESIZE_BORDER, **kwargs):
self.parent = parent
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.ETCICONDIR, '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)':'if()',
'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( , )',
'not(x)':'not()',
'pow(x,y)':'pow( , )',
'rand(a,b)':'rand( , )',
'round(x)':'round()',
'sin(x)':'sin()',
'sqrt(x)':'sqrt()',
'tan(x)':'tan()',
'xor(x,y)':'xor( , )',
'row()':'row()',
'col()':'col()',
'x()':'x()',
'y()':'y()',
'ewres()':'ewres()',
'nsres()':'nsres()',
'null()':'null()'
}
if self.rast3d:
self.funct_dict['z()'] = 'z()'
self.funct_dict['tbres()'] = 'tbres()'
element = 'rast3d'
else:
element = 'cell'
self.operatorBox = wx.StaticBox(parent = self.panel, id = wx.ID_ANY,
label=" %s " % _('Operators'))
self.operandBox = wx.StaticBox(parent = self.panel, id = wx.ID_ANY,
label=" %s " % _('Operands'))
self.expressBox = wx.StaticBox(parent = self.panel, id = wx.ID_ANY,
label=" %s " % _('Expression'))
#
# Buttons
#
self.btn_clear = wx.Button(parent = self.panel, id = wx.ID_CLEAR, label = _("Cl&ear"))
self.btn_help = wx.Button(parent = self.panel, id = wx.ID_HELP)
self.btn_run = wx.Button(parent = self.panel, id = wx.ID_ANY, label = _("&Run"))
self.btn_run.SetDefault()
self.btn_close = wx.Button(parent = self.panel, id = wx.ID_CLOSE)
self.btn_save = wx.Button(parent = self.panel, id = wx.ID_SAVE)
self.btn_save.SetToolTipString(_('Save expression to file'))
self.btn_load = wx.Button(parent = self.panel, id = wx.ID_ANY,
label = _("&Load"))
self.btn_load.SetToolTipString(_('Load expression from file'))
self.btn = dict()
self.btn['pow'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = "^")
self.btn['pow'].SetToolTipString(_('exponent'))
self.btn['div'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = "/")
self.btn['div'].SetToolTipString(_('divide'))
self.btn['add'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = "+")
self.btn['add'].SetToolTipString(_('add'))
self.btn['minus'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = "-")
self.btn['minus'].SetToolTipString(_('subtract'))
self.btn['mod'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = "%")
self.btn['mod'].SetToolTipString(_('modulus'))
self.btn['mult'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = "*")
self.btn['mult'].SetToolTipString(_('multiply'))
self.btn['parenl'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = "(")
self.btn['parenr'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = ")")
self.btn['lshift'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = "<<")
self.btn['lshift'].SetToolTipString(_('left shift'))
self.btn['rshift'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = ">>")
self.btn['rshift'].SetToolTipString(_('right shift'))
self.btn['rshiftu'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = ">>>")
self.btn['rshiftu'].SetToolTipString(_('right shift (unsigned)'))
self.btn['gt'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = ">")
self.btn['gt'].SetToolTipString(_('greater than'))
self.btn['gteq'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = ">=")
self.btn['gteq'].SetToolTipString(_('greater than or equal to'))
self.btn['lt'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = "<")
self.btn['lt'].SetToolTipString(_('less than'))
self.btn['lteq'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = "<=")
self.btn['lteq'].SetToolTipString(_('less than or equal to'))
self.btn['eq'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = "==")
self.btn['eq'].SetToolTipString(_('equal to'))
self.btn['noteq'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = "!=")
self.btn['noteq'].SetToolTipString(_('not equal to'))
self.btn['compl'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = "~")
self.btn['compl'].SetToolTipString(_('one\'s complement'))
self.btn['not'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = "!")
self.btn['not'].SetToolTipString(_('NOT'))
self.btn['andbit'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = '&&')
self.btn['andbit'].SetToolTipString(_('bitwise AND'))
self.btn['orbit'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = "|")
self.btn['orbit'].SetToolTipString(_('bitwise OR'))
self.btn['and'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = "&&&&")
self.btn['and'].SetToolTipString(_('logical AND'))
self.btn['andnull'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = "&&&&&&")
self.btn['andnull'].SetToolTipString(_('logical AND (ignores NULLs)'))
self.btn['or'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = "||")
self.btn['or'].SetToolTipString(_('logical OR'))
self.btn['ornull'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = "|||")
self.btn['ornull'].SetToolTipString(_('logical OR (ignores NULLs)'))
self.btn['cond'] = wx.Button(parent = self.panel, id = wx.ID_ANY, label = "a ? b : c")
self.btn['cond'].SetToolTipString(_('conditional'))
#
# Text area
#
self.text_mcalc = wx.TextCtrl(parent = self.panel, id = wx.ID_ANY, size = (-1, 75),
style = wx.TE_MULTILINE)
wx.CallAfter(self.text_mcalc.SetFocus)
#
# Map and function insertion text and ComboBoxes
self.newmaplabel = wx.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'))
self.newmaptxt = wx.TextCtrl(parent = self.panel, id = wx.ID_ANY, size=(250, -1))
self.mapsellabel = wx.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 = gselect.Select(parent = self.panel, id = wx.ID_ANY, size = (250, -1),
type = element, multiple = False)
self.functlabel = wx.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.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.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._layout()
self.SetMinSize(self.GetBestSize())
def _return_funct(self,event):
i = event.GetString()
self._addSomething(self.funct_dict[i])
def _layout(self):
sizer = wx.BoxSizer(wx.VERTICAL)
controlSizer = wx.BoxSizer(wx.HORIZONTAL)
operatorSizer = wx.StaticBoxSizer(self.operatorBox, wx.HORIZONTAL)
buttonSizer1 = wx.GridBagSizer(5, 1)
buttonSizer1.Add(item = self.btn['add'], pos = (0,0))
buttonSizer1.Add(item = self.btn['minus'], pos = (0,1))
buttonSizer1.Add(item = self.btn['mod'], pos = (5,0))
buttonSizer1.Add(item = self.btn['mult'], pos = (1,0))
buttonSizer1.Add(item = self.btn['div'], pos = (1,1))
buttonSizer1.Add(item = self.btn['pow'], pos = (5,1))
buttonSizer1.Add(item = self.btn['gt'], pos = (2,0))
buttonSizer1.Add(item = self.btn['gteq'], pos = (2,1))
buttonSizer1.Add(item = self.btn['eq'], pos = (4,0))
buttonSizer1.Add(item = self.btn['lt'], pos = (3,0))
buttonSizer1.Add(item = self.btn['lteq'], pos = (3,1))
buttonSizer1.Add(item = self.btn['noteq'], pos = (4,1))
buttonSizer2 = wx.GridBagSizer(5, 1)
buttonSizer2.Add(item = self.btn['and'], pos = (0,0))
buttonSizer2.Add(item = self.btn['andbit'], pos = (1,0))
buttonSizer2.Add(item = self.btn['andnull'], pos = (2,0))
buttonSizer2.Add(item = self.btn['or'], pos = (0,1))
buttonSizer2.Add(item = self.btn['orbit'], pos = (1,1))
buttonSizer2.Add(item = self.btn['ornull'], pos = (2,1))
buttonSizer2.Add(item = self.btn['lshift'], pos = (3,0))
buttonSizer2.Add(item = self.btn['rshift'], pos = (3,1))
buttonSizer2.Add(item = self.btn['rshiftu'], pos = (4,0))
buttonSizer2.Add(item = self.btn['cond'], pos = (5,0))
buttonSizer2.Add(item = self.btn['compl'], pos = (5,1))
buttonSizer2.Add(item = self.btn['not'], pos = (4,1))
operandSizer = wx.StaticBoxSizer(self.operandBox, wx.HORIZONTAL)
buttonSizer3 = wx.GridBagSizer(7, 1)
buttonSizer3.Add(item = self.newmaplabel, pos = (0,0),
span = (1, 2), flag = wx.ALIGN_CENTER)
buttonSizer3.Add(item = self.newmaptxt, pos = (1,0),
span = (1, 2))
buttonSizer3.Add(item = self.functlabel, pos = (2,0),
span = (1,2), flag = wx.ALIGN_CENTER)
buttonSizer3.Add(item = self.function, pos = (3,0),
span = (1,2))
buttonSizer3.Add(item = self.mapsellabel, pos = (4,0),
span = (1,2), flag = wx.ALIGN_CENTER)
buttonSizer3.Add(item = self.mapselect, pos = (5,0),
span = (1,2))
threebutton = wx.GridBagSizer(1, 2)
threebutton.Add(item = self.btn['parenl'], pos = (0,0),
span = (1,1), flag = wx.ALIGN_LEFT)
threebutton.Add(item = self.btn['parenr'], pos = (0,1),
span = (1,1), flag = wx.ALIGN_CENTER)
threebutton.Add(item = self.btn_clear, pos = (0,2),
span = (1,1), flag = wx.ALIGN_RIGHT)
buttonSizer3.Add(item = threebutton, pos = (6,0),
span = (1,1), flag = wx.ALIGN_CENTER)
buttonSizer4 = wx.BoxSizer(wx.HORIZONTAL)
buttonSizer4.AddSpacer(10)
buttonSizer4.Add(item = self.btn_load,
flag = wx.ALL, border = 5)
buttonSizer4.Add(item = self.btn_save,
flag = wx.ALL, border = 5)
buttonSizer4.AddSpacer(30)
buttonSizer4.Add(item = self.btn_help,
flag = wx.ALL, border = 5)
buttonSizer4.Add(item = self.btn_run,
flag = wx.ALL, border = 5)
buttonSizer4.Add(item = self.btn_close,
flag = wx.ALL, border = 5)
operatorSizer.Add(item = buttonSizer1, proportion = 0,
flag = wx.ALL | wx.EXPAND, border = 5)
operatorSizer.Add(item = buttonSizer2, proportion = 0,
flag = wx.TOP | wx.BOTTOM | wx.RIGHT | wx.EXPAND, border = 5)
operandSizer.Add(item = buttonSizer3, proportion = 0,
flag = wx.TOP | wx.BOTTOM | wx.RIGHT, border = 5)
controlSizer.Add(item = operatorSizer, proportion = 1,
flag = wx.RIGHT | wx.EXPAND, border = 5)
controlSizer.Add(item = operandSizer, proportion = 0,
flag = wx.EXPAND)
expressSizer = wx.StaticBoxSizer(self.expressBox, wx.HORIZONTAL)
expressSizer.Add(item = self.text_mcalc, proportion = 1,
flag = wx.EXPAND)
sizer.Add(item = controlSizer, proportion = 0,
flag = wx.EXPAND | wx.ALL,
border = 5)
sizer.Add(item = expressSizer, proportion = 1,
flag = wx.EXPAND | wx.LEFT | wx.RIGHT,
border = 5)
sizer.Add(item = buttonSizer4, proportion = 0,
flag = wx.ALIGN_RIGHT | wx.ALL, border = 3)
if self.addbox.IsShown():
sizer.Add(item = 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)
def OnSelect(self, event):
"""!Gets raster map or function selection and send it to
insertion method
"""
item = event.GetString()
self._addSomething(item)
def OnUpdateStatusBar(self, event):
"""!Update statusbar text"""
self.SetStatusText("r.mapcalc '%s = %s'" % (self.newmaptxt.GetValue(),
self.text_mcalc.GetValue()))
event.Skip()
def _addSomething(self, what):
"""!Inserts operators, map names, and functions into text area
"""
self.text_mcalc.SetFocus()
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
position_offset += len(what)
newmcalcstr += ' ' + mcalcstr[position:]
self.text_mcalc.SetValue(newmcalcstr)
if what == '()':
position_offset -= 1
self.text_mcalc.SetInsertionPoint(position + position_offset)
self.text_mcalc.Update()
def OnMCalcRun(self,event):
"""!Builds and runs r.mapcalc statement
"""
name = self.newmaptxt.GetValue().strip()
if not name:
gcmd.GError(parent = self,
message = _("You must enter the name of a new map to create"))
return
if not self.text_mcalc.GetValue().strip():
gcmd.GError(parent = self,
message = _("You must enter a mapcalc statement to create a new map"))
return
mctxt = self.text_mcalc.GetValue().strip().replace("\n"," ")
mctxt = mctxt.replace(" " , "")
if self.log:
cmd = [self.cmd, str('%s = %s' % (name, mctxt))]
self.log.RunCmd(cmd, onDone = self.OnDone)
self.parent.Raise()
else:
gcmd.RunCommand(self.cmd,
"%s=%s" % (name, mctxt))
def OnDone(self, cmd, returncode):
"""!Add create map to the layer tree"""
if not self.addbox.IsChecked():
return
name = self.newmaptxt.GetValue().strip() + '@' + grass.gisenv()['MAPSET']
mapTree = self.parent.GetLayerTree()
if not mapTree.GetMap().GetListOfLayers(l_name = name):
mapTree.AddLayer(ltype = 'raster',
lname = name,
lcmd = ['d.rast', 'map=%s' % name],
multiple = False)
display = self.parent.GetLayerTree().GetMapDisplay()
if display and display.IsAutoRendered():
display.GetWindow().UpdateMap(render = True)
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.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.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 OnClear(self, event):
"""!Clears text area
"""
self.text_mcalc.SetValue('')
def OnHelp(self, event):
"""!Launches r.mapcalc help
"""
gcmd.RunCommand('g.manual', parent = self, entry = self.cmd)
def OnClose(self,event):
"""!Close window"""
self.Destroy()
if __name__ == "__main__":
app = wx.App(0)
frame = MapCalcFrame(parent = None, cmd = 'r.mapcalc')
frame.Show()
app.MainLoop()
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