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"""
@package gui_core.toolbars
@brief Base classes toolbar widgets
Classes:
- toolbars::BaseToolbar
(C) 2007-2011 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
@author Jachym Cepicky
@author Martin Landa <landa.martin gmail.com>
"""
import platform
import os
import wx
from core import globalvar
from core.debug import Debug
from core.utils import _
from icons.icon import MetaIcon
from collections import defaultdict
from core.globalvar import IMGDIR
from grass.pydispatch.signal import Signal
BaseIcons = {
'display': MetaIcon(img='show',
label=_('Display map'),
desc=_('Re-render modified map layers only')),
'render': MetaIcon(img='layer-redraw',
label=_('Render map'),
desc=_('Force re-rendering all map layers')),
'erase': MetaIcon(img='erase',
label=_('Erase display'),
desc=_('Erase display canvas with given background color')),
'pointer': MetaIcon(img='pointer',
label=_('Pointer')),
'zoomIn': MetaIcon(img='zoom-in',
label=_('Zoom in'),
desc=_('Drag or click mouse to zoom')),
'zoomOut': MetaIcon(img='zoom-out',
label=_('Zoom out'),
desc=_('Drag or click mouse to unzoom')),
'zoomBack': MetaIcon(img='zoom-last',
label=_('Return to previous zoom')),
'zoomMenu': MetaIcon(img='zoom-more',
label=_('Various zoom options'),
desc=_('Zoom to default or saved region, save to named region, ...')),
'zoomExtent': MetaIcon(img='zoom-extent',
label=_('Zoom to selected map layer(s)')),
'zoomRegion': MetaIcon(img='zoom-region',
label=_('Zoom to computational region extent')),
'pan': MetaIcon(img='pan',
label=_('Pan'),
desc=_('Drag with mouse to pan')),
'saveFile': MetaIcon(img='map-export',
label=_('Save display to file')),
'print': MetaIcon(img='print',
label=_('Print display')),
'font': MetaIcon(img='font',
label=_('Select font')),
'help': MetaIcon(img='help',
label=_('Show manual')),
'quit': MetaIcon(img='quit',
label=_('Quit')),
'addRast': MetaIcon(img='layer-raster-add',
label=_('Add raster map layer')),
'addVect': MetaIcon(img='layer-vector-add',
label=_('Add vector map layer')),
'overlay': MetaIcon(img='overlay-add',
label=_('Add map elements'),
desc=_('Overlay elements like scale and legend onto map')),
'histogramD': MetaIcon(img='layer-raster-histogram',
label=_('Create histogram with d.histogram')),
'settings': MetaIcon(img='settings',
label=_("Settings")),
}
class BaseToolbar(wx.ToolBar):
"""Abstract toolbar class.
Following code shows how to create new basic toolbar:
class MyToolbar(BaseToolbar):
def __init__(self, parent):
BaseToolbar.__init__(self, parent)
self.InitToolbar(self._toolbarData())
self.Realize()
def _toolbarData(self):
return self._getToolbarData((("help", Icons["help"],
self.parent.OnHelp),
))
"""
def __init__(self, parent, toolSwitcher=None,
style=wx.NO_BORDER | wx.TB_HORIZONTAL):
self.parent = parent
wx.ToolBar.__init__(self, parent=self.parent, id=wx.ID_ANY,
style=style)
self._default = None
self.SetToolBitmapSize(globalvar.toolbarSize)
self.toolSwitcher = toolSwitcher
self.handlers = {}
def InitToolbar(self, toolData):
"""Initialize toolbar, add tools to the toolbar
"""
for tool in toolData:
self.CreateTool(*tool)
self._data = toolData
def _toolbarData(self):
"""Toolbar data (virtual)"""
return None
def CreateTool(self, label, bitmap, kind,
shortHelp, longHelp, handler, pos=-1):
"""Add tool to the toolbar
:param pos: if -1 add tool, if > 0 insert at given pos
:return: id of tool
"""
bmpDisabled = wx.NullBitmap
tool = -1
if label:
tool = vars(self)[label] = wx.NewId()
Debug.msg(3, "CreateTool(): tool=%d, label=%s bitmap=%s" %
(tool, label, bitmap))
if pos < 0:
toolWin = self.AddLabelTool(tool, label, bitmap,
bmpDisabled, kind,
shortHelp, longHelp)
else:
toolWin = self.InsertLabelTool(pos, tool, label, bitmap,
bmpDisabled, kind,
shortHelp, longHelp)
self.handlers[tool] = handler
self.Bind(wx.EVT_TOOL, handler, toolWin)
self.Bind(wx.EVT_TOOL, self.OnTool, toolWin)
else: # separator
self.AddSeparator()
return tool
def EnableLongHelp(self, enable=True):
"""Enable/disable long help
:param enable: True for enable otherwise disable
"""
for tool in self._data:
if tool[0] == '': # separator
continue
if enable:
self.SetToolLongHelp(vars(self)[tool[0]], tool[4])
else:
self.SetToolLongHelp(vars(self)[tool[0]], "")
def OnTool(self, event):
"""Tool selected
"""
if self.toolSwitcher:
Debug.msg(3, "BaseToolbar.OnTool(): id = %s" % event.GetId())
self.toolSwitcher.ToolChanged(event.GetId())
event.Skip()
def SelectTool(self, id):
self.ToggleTool(id, True)
self.toolSwitcher.ToolChanged(id)
self.handlers[id](event=None)
def SelectDefault(self):
"""Select default tool"""
self.SelectTool(self._default)
def FixSize(self, width):
"""Fix toolbar width on Windows
.. todo::
Determine why combobox causes problems here
"""
if platform.system() == 'Windows':
size = self.GetBestSize()
self.SetSize((size[0] + width, size[1]))
def Enable(self, tool, enable=True):
"""Enable/Disable defined tool
:param tool: name
:param enable: True to enable otherwise disable tool
"""
try:
id = getattr(self, tool)
except AttributeError:
# TODO: test everything that this is not raised
# this error was ignored for a long time
raise AttributeError("Toolbar does not have a tool %s." % tool)
return
self.EnableTool(id, enable)
def EnableAll(self, enable=True):
"""Enable/Disable all tools
:param enable: True to enable otherwise disable tool
"""
for item in self._toolbarData():
if not item[0]:
continue
self.Enable(item[0], enable)
def _getToolbarData(self, data):
"""Define tool
"""
retData = list()
for args in data:
retData.append(self._defineTool(*args))
return retData
def _defineTool(self, name=None, icon=None, handler=None,
item=wx.ITEM_NORMAL, pos=-1):
"""Define tool
"""
if name:
return (name, icon.GetBitmap(),
item, icon.GetLabel(), icon.GetDesc(),
handler, pos)
return ("", "", "", "", "", "") # separator
def _onMenu(self, data):
"""Toolbar pop-up menu"""
menu = wx.Menu()
for icon, handler in data:
item = wx.MenuItem(menu, wx.ID_ANY, icon.GetLabel())
item.SetBitmap(icon.GetBitmap(self.parent.iconsize))
menu.AppendItem(item)
self.Bind(wx.EVT_MENU, handler, item)
self.PopupMenu(menu)
menu.Destroy()
def CreateSelectionButton(self, tooltip=_("Select graphics tool")):
"""Add button to toolbar for selection of graphics drawing mode.
Button must be custom (not toolbar tool) to set smaller width.
"""
arrowPath = os.path.join(IMGDIR, 'small_down_arrow.png')
if os.path.isfile(arrowPath) and os.path.getsize(arrowPath):
bitmap = wx.Bitmap(name=arrowPath)
else:
bitmap = wx.ArtProvider.GetBitmap(
id=wx.ART_MISSING_IMAGE, client=wx.ART_TOOLBAR)
button = wx.BitmapButton(parent=self, id=wx.ID_ANY, size=(
(-1, self.GetToolSize()[1])), bitmap=bitmap, style=wx.NO_BORDER)
button.SetToolTipString(tooltip)
return button
class ToolSwitcher:
"""Class handling switching tools in toolbar and custom toggle buttons."""
def __init__(self):
self._groups = defaultdict(lambda: defaultdict(list))
self._toolsGroups = defaultdict(list)
# emitted when tool is changed
self.toggleToolChanged = Signal('ToolSwitcher.toggleToolChanged')
def AddToolToGroup(self, group, toolbar, tool):
"""Adds tool from toolbar to group of exclusive tools.
:param group: name of group (e.g. 'mouseUse')
:param toolbar: instance of toolbar
:param tool: id of a tool from the toolbar
"""
self._groups[group][toolbar].append(tool)
self._toolsGroups[tool].append(group)
def AddCustomToolToGroup(self, group, btnId, toggleHandler):
"""Adds custom tool from to group of exclusive tools (some toggle button).
:param group: name of group (e.g. 'mouseUse')
:param btnId: id of a tool (typically button)
:param toggleHandler: handler to be called to switch the button
"""
self._groups[group]['custom'].append((btnId, toggleHandler))
self._toolsGroups[btnId].append(group)
def RemoveCustomToolFromGroup(self, tool):
"""Removes custom tool from group.
:param tool: id of the button
"""
if not tool in self._toolsGroups:
return
for group in self._toolsGroups[tool]:
self._groups[group]['custom'] = \
[(bid, hdlr) for (bid, hdlr)
in self._groups[group]['custom'] if bid != tool]
def RemoveToolbarFromGroup(self, group, toolbar):
"""Removes toolbar from group.
Before toolbar is destroyed, it must be removed from group, too.
Otherwise we can expect some DeadObject errors.
:param group: name of group (e.g. 'mouseUse')
:param toolbar: instance of toolbar
"""
for tb in self._groups[group]:
if tb == toolbar:
del self._groups[group][tb]
break
def IsToolInGroup(self, tool, group):
"""Checks whether a tool is in a specified group.
:param tool: tool id
:param group: name of group (e.g. 'mouseUse')
"""
for group in self._toolsGroups[tool]:
for tb in self._groups[group]:
if tb == 'custom':
for bid, handler in self._groups[group][tb]:
if tool == bid:
return True
elif tb.FindById(tool):
return True
return False
def ToolChanged(self, tool):
"""When any tool/button is pressed, other tools from group must be unchecked.
:param tool: id of a tool/button
"""
for group in self._toolsGroups[tool]:
for tb in self._groups[group]:
if tb == 'custom':
for btnId, handler in self._groups[group][tb]:
if btnId != tool:
handler(False)
else:
for tl in self._groups[group][tb]:
if tb.FindById(tl): # check if still exists
if tl != tool:
tb.ToggleTool(tl, False)
else:
tb.ToggleTool(tool, True)
self.toggleToolChanged.emit(id=tool)
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