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"""
@package frame.statusbar
@brief Classes for main window statusbar management
Classes:
- statusbar::SbMain
- statusbar::SbMask
(C) 2022 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 Linda Kladivova <lindakladivova gmail.com>
@author Anna Petrasova <kratochanna gmail.com>
@author Vaclav Petras <wenzeslaus gmail.com>
"""
import wx
import grass.script as gs
from core.gcmd import RunCommand
from core.watchdog import watchdog_used
from gui_core.wrap import Button
class SbMain:
"""Statusbar for main window."""
def __init__(self, parent, giface):
self.parent = parent
self.giface = giface
self.widget = wx.StatusBar(self.parent, id=wx.ID_ANY)
self.widget.SetMinHeight(24)
self.widget.SetFieldsCount(2)
self.widget.SetStatusWidths([-1, 100])
self.mask = SbMask(self.widget, self.giface)
self.widget.Bind(wx.EVT_SIZE, self.OnSize)
self._repositionStatusbar()
def GetWidget(self):
"""Returns underlying widget.
:return: widget or None if doesn't exist
"""
return self.widget
def _repositionStatusbar(self):
"""Reposition widgets in main window statusbar"""
rect1 = self.GetWidget().GetFieldRect(1)
rect1.x += 1
rect1.y += 1
self.mask.GetWidget().SetRect(rect1)
def Refresh(self):
"""Refresh statusbar. So far it refreshes just a mask."""
self.mask.Refresh()
def OnSize(self, event):
"""Adjust main window statusbar on changing size"""
self._repositionStatusbar()
def SetStatusText(self, *args):
"""Override wx.StatusBar method"""
self.GetWidget().SetStatusText(*args)
class SbMask:
"""Button to show whether mask is activated and remove mask with
left mouse click
"""
def __init__(self, parent, giface):
self.name = "mask"
self.mask_layer = "MASK"
self.parent = parent
self.giface = giface
self.widget = Button(
parent=parent, id=wx.ID_ANY, label=_(self.mask_layer), style=wx.NO_BORDER
)
self.widget.Bind(wx.EVT_BUTTON, self.OnRemoveMask)
self.widget.SetForegroundColour(wx.Colour(255, 0, 0))
self.widget.SetToolTip(tip=_("Left mouse click to remove the MASK"))
self.giface.currentMapsetChanged.connect(self.Refresh)
if not watchdog_used:
self.giface.grassdbChanged.connect(self.dbChanged)
self.Refresh()
def dbChanged(self, map=None, newname=None):
"""Mapset files changed
:param str map: map that is changed
:param str newname: new map
"""
if map == self.mask_layer or newname == self.mask_layer:
self.Refresh()
self.giface.updateMap.emit()
def Show(self):
"""Invokes showing of underlying widget.
In derived classes it can do what is appropriate for it,
e.g. showing text on statusbar (only).
"""
self.widget.Show()
def Hide(self):
self.widget.Hide()
def SetValue(self, value):
self.widget.SetValue(value)
def GetValue(self):
return self.widget.GetValue()
def GetWidget(self):
"""Returns underlying widget.
:return: widget or None if doesn't exist
"""
return self.widget
def Refresh(self):
"""Show mask in the statusbar if mask file found"""
if gs.find_file(
name=self.mask_layer, element="cell", mapset=gs.gisenv()["MAPSET"]
)["name"]:
self.Show()
else:
self.Hide()
def OnRemoveMask(self, event):
dlg = wx.MessageDialog(
self.parent,
message=_("Are you sure that you want to remove the MASK?"),
caption=_("Remove MASK"),
style=wx.YES_NO | wx.YES_DEFAULT | wx.ICON_QUESTION,
)
if dlg.ShowModal() != wx.ID_YES:
dlg.Destroy()
return
RunCommand("r.mask", flags="r")
gisenv = gs.gisenv()
self.giface.grassdbChanged.emit(
grassdb=gisenv["GISDBASE"],
location=gisenv["LOCATION_NAME"],
mapset=gisenv["MAPSET"],
map=self.mask_layer,
action="delete",
element="raster",
)
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