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Added extent parameter git-svn-id: http://sextante.googlecode.com/svn/trunk/soft/bindings/qgis-plugin@74 881b9c09-3ef8-f3c2-ec3d-21d735c97f4d
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volayaf@gmail.com
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Apr 13, 2012
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Original file line number | Diff line number | Diff line change |
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from PyQt4 import QtGui, QtCore | ||
from PyQt4.QtCore import * | ||
from PyQt4.QtGui import * | ||
from sextante.gui.RectangleMapTool import RectangleMapTool | ||
from sextante.core.QGisLayers import QGisLayers | ||
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class ExtentSelectionPanel(QtGui.QWidget): | ||
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def __init__(self, default): | ||
super(ExtentSelectionPanel, self).__init__(None) | ||
self.setObjectName("ESPanel") | ||
self.horizontalLayout = QtGui.QHBoxLayout(self) | ||
self.horizontalLayout.setSpacing(2) | ||
self.horizontalLayout.setMargin(0) | ||
self.horizontalLayout.setObjectName("hLayout") | ||
self.text = QtGui.QLineEdit() | ||
self.text.setObjectName("label") | ||
self.text.setText(default) | ||
self.text.setSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Expanding) | ||
self.horizontalLayout.addWidget(self.text) | ||
self.pushButton = QtGui.QPushButton() | ||
self.pushButton.setObjectName("pushButton") | ||
self.pushButton.setText("...") | ||
self.pushButton.clicked.connect(self.buttonPushed) | ||
self.horizontalLayout.addWidget(self.pushButton) | ||
self.setLayout(self.horizontalLayout) | ||
canvas = QGisLayers.iface.mapCanvas() | ||
self.prevMapTool = canvas.mapTool() | ||
self.tool = RectangleMapTool(canvas) | ||
self.connect(self.tool, SIGNAL("rectangleCreated()"), self.fillCoords) | ||
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def buttonPushed(self): | ||
canvas = QGisLayers.iface.mapCanvas() | ||
canvas.setMapTool(self.tool) | ||
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def fillCoords(self): | ||
self.text.setText(str(self.tool.rectangle())) | ||
canvas = QGisLayers.iface.mapCanvas() | ||
canvas.setMapTool(self.prevMapTool) | ||
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def getValue(self): | ||
return str(self.text.text()) |
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Original file line number | Diff line number | Diff line change |
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'''Class taken from GdalTools''' | ||
from PyQt4.QtCore import * | ||
from PyQt4.QtGui import * | ||
from qgis.core import * | ||
from qgis.gui import * | ||
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class RectangleMapTool(QgsMapToolEmitPoint): | ||
def __init__(self, canvas): | ||
self.canvas = canvas | ||
QgsMapToolEmitPoint.__init__(self, self.canvas) | ||
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self.rubberBand = QgsRubberBand( self.canvas, True ) # true, its a polygon | ||
self.rubberBand.setColor( Qt.red ) | ||
self.rubberBand.setWidth( 1 ) | ||
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self.reset() | ||
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def reset(self): | ||
self.startPoint = self.endPoint = None | ||
self.isEmittingPoint = False | ||
self.rubberBand.reset( True ) # true, its a polygon | ||
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def canvasPressEvent(self, e): | ||
self.startPoint = self.toMapCoordinates( e.pos() ) | ||
self.endPoint = self.startPoint | ||
self.isEmittingPoint = True | ||
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self.showRect(self.startPoint, self.endPoint) | ||
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def canvasReleaseEvent(self, e): | ||
self.isEmittingPoint = False | ||
if self.rectangle() != None: | ||
self.emit( SIGNAL("rectangleCreated()") ) | ||
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def canvasMoveEvent(self, e): | ||
if not self.isEmittingPoint: | ||
return | ||
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self.endPoint = self.toMapCoordinates( e.pos() ) | ||
self.showRect(self.startPoint, self.endPoint) | ||
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def showRect(self, startPoint, endPoint): | ||
self.rubberBand.reset( True ) # true, it's a polygon | ||
if startPoint.x() == endPoint.x() or startPoint.y() == endPoint.y(): | ||
return | ||
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point1 = QgsPoint(startPoint.x(), startPoint.y()) | ||
point2 = QgsPoint(startPoint.x(), endPoint.y()) | ||
point3 = QgsPoint(endPoint.x(), endPoint.y()) | ||
point4 = QgsPoint(endPoint.x(), startPoint.y()) | ||
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self.rubberBand.addPoint( point1, False ) | ||
self.rubberBand.addPoint( point2, False ) | ||
self.rubberBand.addPoint( point3, False ) | ||
self.rubberBand.addPoint( point4, True ) # true to update canvas | ||
self.rubberBand.show() | ||
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def rectangle(self): | ||
if self.startPoint == None or self.endPoint == None: | ||
return None | ||
elif self.startPoint.x() == self.endPoint.x() or self.startPoint.y() == self.endPoint.y(): | ||
return None | ||
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return QgsRectangle(self.startPoint, self.endPoint) | ||
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def setRectangle(self, rect): | ||
if rect == self.rectangle(): | ||
return False | ||
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if rect == None: | ||
self.reset() | ||
else: | ||
self.startPoint = QgsPoint(rect.xMaximum(), rect.yMaximum()) | ||
self.endPoint = QgsPoint(rect.xMinimum(), rect.yMinimum()) | ||
self.showRect(self.startPoint, self.endPoint) | ||
return True | ||
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def deactivate(self): | ||
QgsMapTool.deactivate(self) | ||
self.emit(SIGNAL("deactivated()")) |
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Original file line number | Diff line number | Diff line change |
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from sextante.parameters.Parameter import Parameter | ||
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class ParameterExtent(Parameter): | ||
def __init__(self, name="", description="", default="0,1,0,1"): | ||
self.name = name | ||
self.description = description | ||
self.default = default | ||
self.value = None #The value is a string in the form "N,S,E,W" | ||
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def setValue(self, text): | ||
tokens = text.split(",") | ||
if len(tokens)!= 4: | ||
return False | ||
try: | ||
n1 = float(tokens[0]) | ||
n2 = float(tokens[1]) | ||
n3 = float(tokens[2]) | ||
n4 = float(tokens[3]) | ||
self.value=text | ||
return True | ||
except: | ||
return False | ||
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def getValueAsCommandLineParameter(self): | ||
return "\"" + str(self.value) + "\"" | ||
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def serialize(self): | ||
return self.__module__.split(".")[-1] + "|" + self.name + "|" + self.description +\ | ||
"|" + str(self.default) | ||
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def deserialize(self, s): | ||
tokens = s.split("|") | ||
return ParameterExtent(tokens[0], tokens[1], tokens[2]) | ||
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