mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-26 00:02:08 -05:00
162 lines
6.9 KiB
Python
162 lines
6.9 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
NumberInputDialog.py
|
|
---------------------
|
|
Date : August 2012
|
|
Copyright : (C) 2012 by Victor Olaya
|
|
Email : volayaf 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__ = 'Victor Olaya'
|
|
__date__ = 'August 2012'
|
|
__copyright__ = '(C) 2012, Victor Olaya'
|
|
|
|
# This will get replaced with a git SHA1 when you do a git archive
|
|
|
|
__revision__ = '$Format:%H$'
|
|
|
|
from qgis.core import *
|
|
from PyQt4.QtCore import *
|
|
from PyQt4.QtGui import *
|
|
from PyQt4 import QtCore, QtGui
|
|
from processing import interface
|
|
from processing.tools import dataobjects
|
|
|
|
|
|
class NumberInputDialog(QtGui.QDialog):
|
|
|
|
def __init__(self):
|
|
QtGui.QDialog.__init__(self)
|
|
self.setModal(True)
|
|
self.setupUi()
|
|
self.value = None
|
|
|
|
def setupUi(self):
|
|
self.resize(500, 350)
|
|
self.buttonBox = QtGui.QDialogButtonBox()
|
|
self.buttonBox.setOrientation(QtCore.Qt.Horizontal)
|
|
self.buttonBox.setStandardButtons(QtGui.QDialogButtonBox.Cancel
|
|
| QtGui.QDialogButtonBox.Ok)
|
|
self.label = QtGui.QLabel()
|
|
self.label.setText('Enter expression in the text field.\nDouble click\
|
|
on elements in the tree to add their values to the expression.')
|
|
self.tree = QtGui.QTreeWidget()
|
|
self.tree.setHeaderHidden(True)
|
|
self.fillTree()
|
|
self.formulaText = QtGui.QLineEdit()
|
|
if hasattr(self.formulaText, 'setPlaceholderText'):
|
|
self.formulaText.setPlaceholderText('[Enter your formula here]')
|
|
self.setWindowTitle('Enter number or expression')
|
|
self.verticalLayout = QtGui.QVBoxLayout()
|
|
self.verticalLayout.setSpacing(2)
|
|
self.verticalLayout.setMargin(0)
|
|
self.verticalLayout.addWidget(self.label)
|
|
self.verticalLayout.addWidget(self.tree)
|
|
self.verticalLayout.addWidget(self.formulaText)
|
|
self.verticalLayout.addWidget(self.buttonBox)
|
|
self.setLayout(self.verticalLayout)
|
|
self.tree.doubleClicked.connect(self.addValue)
|
|
QtCore.QObject.connect(self.buttonBox, QtCore.SIGNAL('accepted()'),
|
|
self.okPressed)
|
|
QtCore.QObject.connect(self.buttonBox, QtCore.SIGNAL('rejected()'),
|
|
self.cancelPressed)
|
|
QtCore.QMetaObject.connectSlotsByName(self)
|
|
|
|
def fillTree(self):
|
|
layersItem = QtGui.QTreeWidgetItem()
|
|
layersItem.setText(0, 'Values from data layers extents')
|
|
self.tree.addTopLevelItem(layersItem)
|
|
layers = dataobjects.getAllLayers()
|
|
for layer in layers:
|
|
layerItem = QtGui.QTreeWidgetItem()
|
|
layerItem.setText(0, unicode(layer.name()))
|
|
layerItem.addChild(TreeValueItem('Min X',
|
|
layer.extent().xMinimum()))
|
|
layerItem.addChild(TreeValueItem('Max X',
|
|
layer.extent().xMaximum()))
|
|
layerItem.addChild(TreeValueItem('Min Y',
|
|
layer.extent().yMinimum()))
|
|
layerItem.addChild(TreeValueItem('Max y',
|
|
layer.extent().yMaximum()))
|
|
if isinstance(layer, QgsRasterLayer):
|
|
cellsize = (layer.extent().xMaximum()
|
|
- layer.extent().xMinimum()) / layer.width()
|
|
layerItem.addChild(TreeValueItem('Cellsize', cellsize))
|
|
layersItem.addChild(layerItem)
|
|
layersItem = QtGui.QTreeWidgetItem()
|
|
layersItem.setText(0, 'Values from raster layers statistics')
|
|
self.tree.addTopLevelItem(layersItem)
|
|
layers = dataobjects.getRasterLayers()
|
|
for layer in layers:
|
|
for i in range(layer.bandCount()):
|
|
if QGis.QGIS_VERSION_INT >= 10900:
|
|
stats = layer.dataProvider().bandStatistics(i + 1)
|
|
else:
|
|
stats = layer.bandStatistics(i)
|
|
layerItem = QtGui.QTreeWidgetItem()
|
|
layerItem.setText(0, unicode(layer.name()))
|
|
layerItem.addChild(TreeValueItem('Mean', stats.mean))
|
|
layerItem.addChild(TreeValueItem('Std. deviation',
|
|
stats.stdDev))
|
|
layerItem.addChild(TreeValueItem('Max value',
|
|
stats.maximumValue))
|
|
layerItem.addChild(TreeValueItem('Min value',
|
|
stats.minimumValue))
|
|
layersItem.addChild(layerItem)
|
|
|
|
canvasItem = QtGui.QTreeWidgetItem()
|
|
canvasItem.setText(0, 'Values from QGIS map canvas')
|
|
self.tree.addTopLevelItem(canvasItem)
|
|
extent = interface.iface.mapCanvas().extent()
|
|
extentItem = QtGui.QTreeWidgetItem()
|
|
extentItem.setText(0, 'Current extent')
|
|
extentItem.addChild(TreeValueItem('Min X', extent.xMinimum()))
|
|
extentItem.addChild(TreeValueItem('Max X', extent.xMaximum()))
|
|
extentItem.addChild(TreeValueItem('Min Y', extent.yMinimum()))
|
|
extentItem.addChild(TreeValueItem('Max y', extent.yMaximum()))
|
|
canvasItem.addChild(extentItem)
|
|
extent = interface.iface.mapCanvas().fullExtent()
|
|
extentItem = QtGui.QTreeWidgetItem()
|
|
extentItem.setText(0, 'Full extent of all layers in map canvas')
|
|
extentItem.addChild(TreeValueItem('Min X', extent.xMinimum()))
|
|
extentItem.addChild(TreeValueItem('Max X', extent.xMaximum()))
|
|
extentItem.addChild(TreeValueItem('Min Y', extent.yMinimum()))
|
|
extentItem.addChild(TreeValueItem('Max y', extent.yMaximum()))
|
|
canvasItem.addChild(extentItem)
|
|
|
|
def addValue(self):
|
|
item = self.tree.currentItem()
|
|
if isinstance(item, TreeValueItem):
|
|
self.formulaText.setText(str(self.formulaText.text()) + ' '
|
|
+ str(item.value))
|
|
|
|
def okPressed(self):
|
|
try:
|
|
self.value = float(eval(str(self.formulaText.text())))
|
|
self.close()
|
|
except:
|
|
QMessageBox.critical(self, 'Wrong expression',
|
|
'The expression entered is not correct')
|
|
|
|
def cancelPressed(self):
|
|
self.value = None
|
|
self.close()
|
|
|
|
|
|
class TreeValueItem(QtGui.QTreeWidgetItem):
|
|
|
|
def __init__(self, name, value):
|
|
QTreeWidgetItem.__init__(self)
|
|
self.value = value
|
|
self.setText(0, name + ':' + str(value))
|