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https://github.com/qgis/QGIS.git
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24ba0309ff
1) All fTools functions should now add all layers to dropdowns (including non-visible layers), 2) All fTools functions should now be non-modal 3) Several fTools functions have been spead up slightly 4) Where possible, internal (cpp) functions have be used to replace older Python functions 5) Defining projections now also considers .qpj files Fixes bugs #2502 and #2506, and possibly others? git-svn-id: http://svn.osgeo.org/qgis/trunk@13037 c8812cc2-4d05-0410-92ff-de0c093fc19c
53 lines
1.9 KiB
Python
Executable File
53 lines
1.9 KiB
Python
Executable File
# -*- coding: utf-8 -*-
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from PyQt4.QtCore import *
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from PyQt4.QtGui import *
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from qgis.core import *
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import ftools_utils
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from ui_frmRandom import Ui_Dialog
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import random
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class Dialog(QDialog, Ui_Dialog):
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def __init__(self, iface):
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QDialog.__init__(self)
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self.iface = iface
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# Set up the user interface from Designer.
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self.setupUi(self)
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QObject.connect(self.inShape, SIGNAL("currentIndexChanged(QString)"), self.changed)
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self.setWindowTitle(self.tr("Random selection"))
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# populate layer list
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self.progressBar.setValue(0)
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mapCanvas = self.iface.mapCanvas()
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layers = ftools_utils.getLayerNames([QGis.Point, QGis.Line, QGis.Polygon])
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self.inShape.addItems(layers)
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def changed(self, inputLayer):
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changedLayer = ftools_utils.getVectorLayerByName(inputLayer)
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changedProvider = changedLayer.dataProvider()
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upperVal = changedProvider.featureCount()
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self.spnNumber.setMaximum(upperVal)
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def accept(self):
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if self.inShape.currentText() == "":
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QMessageBox.information(self, self.tr("Random Selection Tool"), self.tr("No input shapefile specified"))
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else:
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self.progressBar.setValue(10)
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inName = self.inShape.currentText()
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self.progressBar.setValue(20)
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layer = ftools_utils.getVectorLayerByName(inName)
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self.progressBar.setValue(30)
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if self.rdoNumber.isChecked():
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value = self.spnNumber.value()
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self.progressBar.setValue(60)
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else:
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value = self.spnPercent.value()
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self.progressBar.setValue(50)
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value = int(round((value / 100.0000), 4) * layer.featureCount())
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self.progressBar.setValue(60)
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selran = random.sample(xrange(0, layer.featureCount()), value)
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self.progressBar.setValue(70)
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self.progressBar.setValue(80)
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self.progressBar.setValue(90)
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self.progressBar.setValue(100)
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layer.setSelectedFeatures(selran)
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self.progressBar.setValue(0)
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