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143 lines
6.5 KiB
Python
143 lines
6.5 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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NumberInputDialog.py
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---------------------
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Date : August 2012
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Copyright : (C) 2012 by Victor Olaya
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Email : volayaf at gmail dot com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************
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"""
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__author__ = 'Victor Olaya'
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__date__ = 'August 2012'
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__copyright__ = '(C) 2012, Victor Olaya'
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# This will get replaced with a git SHA1 when you do a git archive
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__revision__ = '$Format:%H$'
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from qgis.core import *
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from PyQt4.QtCore import *
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from PyQt4.QtGui import *
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from PyQt4 import QtCore, QtGui
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from processing.core.QGisLayers import QGisLayers
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class NumberInputDialog(QtGui.QDialog):
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def __init__(self):
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QtGui.QDialog.__init__(self)
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self.setModal(True)
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self.setupUi()
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self.value = None
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def setupUi(self):
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self.resize(500, 350)
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self.buttonBox = QtGui.QDialogButtonBox()
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self.buttonBox.setOrientation(QtCore.Qt.Horizontal)
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self.buttonBox.setStandardButtons(QtGui.QDialogButtonBox.Cancel|QtGui.QDialogButtonBox.Ok)
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self.label = QtGui.QLabel()
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self.label.setText("Enter expression in the text field.\nDouble click on elements in the tree to add their values to the expression.")
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self.tree = QtGui.QTreeWidget()
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self.tree.setHeaderHidden(True)
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self.fillTree()
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self.formulaText = QtGui.QLineEdit()
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if hasattr(self.formulaText, 'setPlaceholderText'):
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self.formulaText.setPlaceholderText("[Enter your formula here]")
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self.setWindowTitle("Enter number or expression")
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self.verticalLayout = QtGui.QVBoxLayout()
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self.verticalLayout.setSpacing(2)
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self.verticalLayout.setMargin(0)
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self.verticalLayout.addWidget(self.label)
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self.verticalLayout.addWidget(self.tree)
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self.verticalLayout.addWidget(self.formulaText)
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self.verticalLayout.addWidget(self.buttonBox)
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self.setLayout(self.verticalLayout)
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self.tree.doubleClicked.connect(self.addValue)
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QtCore.QObject.connect(self.buttonBox, QtCore.SIGNAL("accepted()"), self.okPressed)
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QtCore.QObject.connect(self.buttonBox, QtCore.SIGNAL("rejected()"), self.cancelPressed)
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QtCore.QMetaObject.connectSlotsByName(self)
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def fillTree(self):
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layersItem = QtGui.QTreeWidgetItem()
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layersItem.setText(0, "Values from data layers extents")
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self.tree.addTopLevelItem(layersItem)
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layers = QGisLayers.getAllLayers()
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for layer in layers:
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layerItem = QtGui.QTreeWidgetItem()
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layerItem.setText(0, unicode(layer.name()))
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layerItem.addChild(TreeValueItem("Min X", layer.extent().xMinimum()))
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layerItem.addChild(TreeValueItem("Max X", layer.extent().xMaximum()))
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layerItem.addChild(TreeValueItem("Min Y", layer.extent().yMinimum()))
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layerItem.addChild(TreeValueItem("Max y", layer.extent().yMaximum()))
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if isinstance(layer, QgsRasterLayer):
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cellsize = (layer.extent().xMaximum() - layer.extent().xMinimum())/layer.width()
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layerItem.addChild(TreeValueItem("Cellsize", cellsize))
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layersItem.addChild(layerItem)
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layersItem = QtGui.QTreeWidgetItem()
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layersItem.setText(0, "Values from raster layers statistics")
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self.tree.addTopLevelItem(layersItem)
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layers = QGisLayers.getRasterLayers()
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for layer in layers:
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for i in range(layer.bandCount()):
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if QGis.QGIS_VERSION_INT >= 10900:
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stats = layer.dataProvider().bandStatistics(i+1)
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else:
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stats = layer.bandStatistics(i)
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layerItem = QtGui.QTreeWidgetItem()
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layerItem.setText(0, unicode(layer.name()))
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layerItem.addChild(TreeValueItem("Mean", stats.mean))
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layerItem.addChild(TreeValueItem("Std. deviation", stats.stdDev))
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layerItem.addChild(TreeValueItem("Max value", stats.maximumValue))
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layerItem.addChild(TreeValueItem("Min value", stats.minimumValue))
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layersItem.addChild(layerItem)
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canvasItem = QtGui.QTreeWidgetItem()
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canvasItem.setText(0, "Values from QGIS map canvas")
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self.tree.addTopLevelItem(canvasItem)
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extent = QGisLayers.iface.mapCanvas().extent()
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extentItem = QtGui.QTreeWidgetItem()
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extentItem.setText(0, "Current extent")
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extentItem.addChild(TreeValueItem("Min X", extent.xMinimum()))
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extentItem.addChild(TreeValueItem("Max X", extent.xMaximum()))
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extentItem.addChild(TreeValueItem("Min Y", extent.yMinimum()))
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extentItem.addChild(TreeValueItem("Max y", extent.yMaximum()))
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canvasItem.addChild(extentItem)
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extent = QGisLayers.iface.mapCanvas().fullExtent()
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extentItem = QtGui.QTreeWidgetItem()
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extentItem.setText(0, "Full extent of all layers in map canvas")
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extentItem.addChild(TreeValueItem("Min X", extent.xMinimum()))
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extentItem.addChild(TreeValueItem("Max X", extent.xMaximum()))
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extentItem.addChild(TreeValueItem("Min Y", extent.yMinimum()))
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extentItem.addChild(TreeValueItem("Max y", extent.yMaximum()))
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canvasItem.addChild(extentItem)
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def addValue(self):
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item = self.tree.currentItem()
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if isinstance(item, TreeValueItem):
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self.formulaText.setText(str(self.formulaText.text()) + " " + str(item.value))
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def okPressed(self):
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try:
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self.value = float(eval(str(self.formulaText.text())))
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self.close()
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except:
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QMessageBox.critical(self, "Wrong expression", "The expression entered is not correct")
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def cancelPressed(self):
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self.value = None
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self.close()
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class TreeValueItem(QtGui.QTreeWidgetItem):
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def __init__(self, name, value):
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QTreeWidgetItem.__init__(self)
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self.value = value
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self.setText(0, name + ":" + str(value)) |