# -*- coding: utf-8 -*- """ *************************************************************************** widgetPluginBase.py --------------------- Date : June 2010 Copyright : (C) 2010 by Giuseppe Sucameli Email : brush dot tyler at gmail dot com *************************************************************************** * * * This program 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 2 of the License, or * * (at your option) any later version. * * * *************************************************************************** """ __author__ = 'Giuseppe Sucameli' __date__ = 'June 2010' __copyright__ = '(C) 2010, Giuseppe Sucameli' # This will get replaced with a git SHA1 when you do a git archive __revision__ = '$Format:%H$' from PyQt4.QtCore import * from PyQt4.QtGui import * from qgis.core import * from qgis.gui import * from dialogBase import GdalToolsBaseDialog as BaseDialog import GdalTools_utils as Utils class GdalToolsBasePluginWidget: def __init__(self, iface, commandName): self.iface = iface self.initialized = False self.base = BaseDialog( iface.mainWindow(), iface, self, self.windowTitle(), commandName) self.connect(self.base, SIGNAL("processError(QProcess::ProcessError)"), self.onError) self.connect(self.base, SIGNAL("processFinished(int, QProcess::ExitStatus)"), self.onFinished) self.connect(self.base, SIGNAL("okClicked()"), self.onRun) self.connect(self.base, SIGNAL("closeClicked()"), self.onClosing) self.connect(self.base, SIGNAL("helpClicked()"), self.onHelp) self.connect(self.base, SIGNAL("finished(bool)"), self.finished) self.connect(self.base, SIGNAL("refreshArgs()"), self.someValueChanged) def someValueChanged(self): if self.initialized: self.emit(SIGNAL("valuesChanged(PyQt_PyObject)"), self.getArguments()) def onLayersChanged(self): pass def initialize(self): if not self.initialized: self.connect(Utils.LayerRegistry.instance(), SIGNAL("layersChanged"), self.onLayersChanged) self.onLayersChanged() self.initialized = True self.someValueChanged() def exec_(self): self.initialize() return self.base.exec_() def show_(self): self.initialize() return self.base.show() def setCommandViewerEnabled(self, enable): self.base.setCommandViewerEnabled(enable) self.someValueChanged() def onRun(self): self.base.onRun() def onClosing(self): self.disconnect(Utils.LayerRegistry.instance(), SIGNAL("layersChanged"), self.onLayersChanged) self.base.onClosing() self.initialized = False def onHelp(self): self.base.onHelp() def onFinished(self, exitCode, status): self.base.onFinished(exitCode, status) def onError(self, error): self.base.onError(error) def getArguments(self): pass def getInputFileName(self): pass def getOutputFileName(self): pass def addLayerIntoCanvas(self, fileInfo): pass def finished(self, load): outFn = self.getOutputFileName() if outFn == None: return if outFn == '': QMessageBox.warning(self, self.tr( "Warning" ), self.tr( "No output file created." ) ) return fileInfo = QFileInfo(outFn) if fileInfo.exists(): if load: self.addLayerIntoCanvas(fileInfo) QMessageBox.information(self, self.tr( "Finished" ), self.tr( "Processing completed." ) ) else: #QMessageBox.warning(self, self.tr( "Warning" ), self.tr( "%1 not created." ).arg( outFn ) ) QMessageBox.warning(self, self.tr( "Warning" ), self.tr( "%s not created." ) % outFn ) # This method is useful to set up options for the command. It sets for each passed widget: # 1. its passed signals to connect to the BasePluginWidget.someValueChanged() slot, # 2. its enabler checkbox or enabled status, # 3. its status as visible (hide) if the installed gdal version is greater or equal (lesser) then the passed version # # wdgts_sgnls_chk_ver_list: list of wdgts_sgnls_chk_ver # wdgts_sgnls_chk_ver: tuple containing widgets, signals, enabler checkbox or enabled status, required version def setParamsStatus(self, wdgts_sgnls_chk_ver_list): if isinstance(wdgts_sgnls_chk_ver_list, list): for wdgts_sgnls_chk_ver in wdgts_sgnls_chk_ver_list: self.setParamsStatus(wdgts_sgnls_chk_ver) return wdgts_sgnls_chk_ver = wdgts_sgnls_chk_ver_list if not isinstance(wdgts_sgnls_chk_ver, tuple): return if len(wdgts_sgnls_chk_ver) > 0: wdgts = wdgts_sgnls_chk_ver[0] else: wdgts = None if len(wdgts_sgnls_chk_ver) > 1: sgnls = wdgts_sgnls_chk_ver[1] else: sgnls = None if len(wdgts_sgnls_chk_ver) > 2: chk = wdgts_sgnls_chk_ver[2] else: chk = None if len(wdgts_sgnls_chk_ver) > 3: ver = wdgts_sgnls_chk_ver[3] else: ver = None if isinstance(wdgts, list): for wdgt in wdgts: self.setParamsStatus((wdgt, sgnls, chk, ver)) return wdgt = wdgts if not isinstance(wdgt, QWidget): return # if check version fails, disable the widget then hide both it and its enabler checkbox # new check for gdal 1.10, must update all widgets for this and then remove previous check if ver != None and isinstance(ver, int): gdalVerNum = Utils.GdalConfig.versionNum() if ver > gdalVerNum: wdgt.setVisible(False) if isinstance(chk, QWidget): chk.setVisible(False) chk.setChecked(False) sgnls = None chk = False elif ver != None: if not isinstance(ver, Utils.Version): ver = Utils.Version(ver) gdalVer = Utils.GdalConfig.version() if ver < "0" or ( gdalVer != None and ver > gdalVer ): wdgt.setVisible(False) if isinstance(chk, QWidget): chk.setVisible(False) chk.setChecked(False) sgnls = None chk = False # connects the passed signals to the BasePluginWidget.someValueChanged slot if isinstance(sgnls, list): for sgnl in sgnls: self.setParamsStatus((wdgt, sgnl, chk)) return sgnl = sgnls if sgnl != None: self.connect(wdgt, sgnl, self.someValueChanged) # set the passed checkbox as widget enabler if isinstance(chk, bool): wdgt.setEnabled(chk) if ( isinstance(chk, QAbstractButton) or isinstance(chk, QGroupBox) ) and \ chk.isCheckable(): wdgt.setEnabled(chk.isChecked()) self.connect(chk, SIGNAL("toggled(bool)"), wdgt.setEnabled) self.connect(chk, SIGNAL("toggled(bool)"), self.someValueChanged)