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cfarmer
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Vector grid tool now uses project crs instead of None. Fixes #2494.
git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@13021 c8812cc2-4d05-0410-92ff-de0c093fc19c
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‎python/plugins/fTools/tools/doVectorGrid.py‎

Lines changed: 155 additions & 152 deletions
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,4 @@
1+
# -*- coding: utf-8 -*-
12
#-----------------------------------------------------------
23
#
34
# Generate Vector Grid
@@ -36,162 +37,164 @@
3637
from ui_frmVectorGrid import Ui_Dialog
3738

3839
class Dialog(QDialog, Ui_Dialog):
39-
def __init__(self, iface):
40-
QDialog.__init__(self)
41-
self.iface = iface
42-
self.setupUi(self)
43-
QObject.connect(self.toolOut, SIGNAL("clicked()"), self.outFile)
44-
QObject.connect(self.spnX, SIGNAL("valueChanged(double)"), self.offset)
45-
#QObject.connect(self.inShape, SIGNAL("currentIndexChanged(QString)"), self.updateInput)
46-
QObject.connect(self.btnUpdate, SIGNAL("clicked()"), self.updateLayer)
47-
QObject.connect(self.btnCanvas, SIGNAL("clicked()"), self.updateCanvas)
48-
self.setWindowTitle(self.tr("Vector grid"))
49-
self.xMin.setValidator(QDoubleValidator(self.xMin))
50-
self.xMax.setValidator(QDoubleValidator(self.xMax))
51-
self.yMin.setValidator(QDoubleValidator(self.yMin))
52-
self.yMax.setValidator(QDoubleValidator(self.yMax))
53-
layermap = QgsMapLayerRegistry.instance().mapLayers()
54-
for name, layer in layermap.iteritems():
55-
self.inShape.addItem( unicode( layer.name() ) )
40+
def __init__(self, iface):
41+
QDialog.__init__(self)
42+
self.iface = iface
43+
self.setupUi(self)
44+
QObject.connect(self.toolOut, SIGNAL("clicked()"), self.outFile)
45+
QObject.connect(self.spnX, SIGNAL("valueChanged(double)"), self.offset)
46+
#QObject.connect(self.inShape, SIGNAL("currentIndexChanged(QString)"), self.updateInput)
47+
QObject.connect(self.btnUpdate, SIGNAL("clicked()"), self.updateLayer)
48+
QObject.connect(self.btnCanvas, SIGNAL("clicked()"), self.updateCanvas)
49+
self.setWindowTitle(self.tr("Vector grid"))
50+
self.xMin.setValidator(QDoubleValidator(self.xMin))
51+
self.xMax.setValidator(QDoubleValidator(self.xMax))
52+
self.yMin.setValidator(QDoubleValidator(self.yMin))
53+
self.yMax.setValidator(QDoubleValidator(self.yMax))
54+
layermap = QgsMapLayerRegistry.instance().mapLayers()
55+
for name, layer in layermap.iteritems():
56+
self.inShape.addItem( unicode( layer.name() ) )
5657

57-
def offset(self, value):
58-
if self.chkLock.isChecked():
59-
self.spnY.setValue(value)
58+
def offset(self, value):
59+
if self.chkLock.isChecked():
60+
self.spnY.setValue(value)
6061

61-
def updateLayer( self ):
62-
mLayerName = self.inShape.currentText()
63-
if not mLayerName == "":
64-
mLayer = ftools_utils.getMapLayerByName( unicode( mLayerName ) )
65-
boundBox = mLayer.extent()
66-
self.updateExtents( boundBox )
67-
68-
def updateCanvas( self ):
69-
canvas = self.iface.mapCanvas()
70-
boundBox = canvas.extent()
71-
self.updateExtents( boundBox )
72-
73-
def updateExtents( self, boundBox ):
74-
self.xMin.setText( unicode( boundBox.xMinimum() ) )
75-
self.yMin.setText( unicode( boundBox.yMinimum() ) )
76-
self.xMax.setText( unicode( boundBox.xMaximum() ) )
77-
self.yMax.setText( unicode( boundBox.yMaximum() ) )
62+
def updateLayer( self ):
63+
mLayerName = self.inShape.currentText()
64+
if not mLayerName == "":
65+
mLayer = ftools_utils.getMapLayerByName( unicode( mLayerName ) )
66+
boundBox = mLayer.extent()
67+
self.updateExtents( boundBox )
68+
69+
def updateCanvas( self ):
70+
canvas = self.iface.mapCanvas()
71+
boundBox = canvas.extent()
72+
self.updateExtents( boundBox )
73+
74+
def updateExtents( self, boundBox ):
75+
self.xMin.setText( unicode( boundBox.xMinimum() ) )
76+
self.yMin.setText( unicode( boundBox.yMinimum() ) )
77+
self.xMax.setText( unicode( boundBox.xMaximum() ) )
78+
self.yMax.setText( unicode( boundBox.yMaximum() ) )
7879

79-
def accept(self):
80-
if self.xMin.text() == "" or self.xMax.text() == "" or self.yMin.text() == "" or self.yMax.text() == "":
81-
QMessageBox.information(self, self.tr("Vector grid"), self.tr("Please specify valid extent coordinates"))
82-
elif self.outShape.text() == "":
83-
QMessageBox.information(self, self.tr("Vector grid"), self.tr("Please specify output shapefile"))
84-
else:
85-
try:
86-
boundBox = QgsRectangle(
87-
float( self.xMin.text() ),
88-
float( self.yMin.text() ),
89-
float( self.xMax.text() ),
90-
float( self.yMax.text() ) )
91-
except:
92-
QMessageBox.information(self, self.tr("Vector grid"), self.tr("Invalid extent coordinates entered"))
93-
xSpace = self.spnX.value()
94-
ySpace = self.spnY.value()
95-
if self.rdoPolygons.isChecked(): polygon = True
96-
else: polygon = False
97-
self.outShape.clear()
98-
self.compute( boundBox, xSpace, ySpace, polygon )
99-
addToTOC = QMessageBox.question(self, self.tr("Generate Vector Grid"), self.tr("Created output shapefile:\n%1\n\nNote: Layer has no associated coordinate system, please use the Projection Management Tool to specify spatial reference system.\n\nWould you like to add the new layer to the TOC?").arg(unicode(self.shapefileName)), QMessageBox.Yes, QMessageBox.No, QMessageBox.NoButton)
100-
if addToTOC == QMessageBox.Yes:
101-
ftools_utils.addShapeToCanvas( self.shapefileName )
102-
self.progressBar.setValue( 0 )
80+
def accept(self):
81+
if self.xMin.text() == "" or self.xMax.text() == "" or self.yMin.text() == "" or self.yMax.text() == "":
82+
QMessageBox.information(self, self.tr("Vector grid"), self.tr("Please specify valid extent coordinates"))
83+
elif self.outShape.text() == "":
84+
QMessageBox.information(self, self.tr("Vector grid"), self.tr("Please specify output shapefile"))
85+
else:
86+
try:
87+
boundBox = QgsRectangle(
88+
float( self.xMin.text() ),
89+
float( self.yMin.text() ),
90+
float( self.xMax.text() ),
91+
float( self.yMax.text() ) )
92+
except:
93+
QMessageBox.information(self, self.tr("Vector grid"), self.tr("Invalid extent coordinates entered"))
94+
xSpace = self.spnX.value()
95+
ySpace = self.spnY.value()
96+
if self.rdoPolygons.isChecked(): polygon = True
97+
else: polygon = False
98+
self.outShape.clear()
99+
self.compute( boundBox, xSpace, ySpace, polygon )
100+
addToTOC = QMessageBox.question(self, self.tr("Generate Vector Grid"), self.tr("Created output shapefile:\n%1\n\nWould you like to add the new layer to the TOC?").arg(unicode(self.shapefileName)), QMessageBox.Yes, QMessageBox.No, QMessageBox.NoButton)
101+
if addToTOC == QMessageBox.Yes:
102+
ftools_utils.addShapeToCanvas( self.shapefileName )
103+
self.progressBar.setValue( 0 )
103104

104-
def compute( self, bound, xOffset, yOffset, polygon ):
105-
if polygon:
106-
fields = {0:QgsField("ID", QVariant.Int), 1:QgsField("XMIN", QVariant.Double), 2:QgsField("XMAX", QVariant.Double),
107-
3:QgsField("YMIN", QVariant.Double), 4:QgsField("YMAX", QVariant.Double)}
108-
check = QFile(self.shapefileName)
109-
if check.exists():
110-
if not QgsVectorFileWriter.deleteShapeFile(self.shapefileName):
111-
return
112-
writer = QgsVectorFileWriter(self.shapefileName, self.encoding, fields, QGis.WKBPolygon, None)
113-
#writer = QgsVectorFileWriter(outPath, "CP1250", fields, QGis.WKBPolygon, None)
114-
else:
115-
fields = {0:QgsField("ID", QVariant.Int), 1:QgsField("COORD", QVariant.Double)}
116-
check = QFile(self.shapefileName)
117-
if check.exists():
118-
if not QgsVectorFileWriter.deleteShapeFile(self.shapefileName):
119-
return
120-
writer = QgsVectorFileWriter(self.shapefileName, self.encoding, fields, QGis.WKBLineString, None)
121-
#writer = QgsVectorFileWriter(unicode(outPath), "CP1250", fields, QGis.WKBLineString, None)
122-
outFeat = QgsFeature()
123-
outGeom = QgsGeometry()
124-
idVar = 0
125-
self.progressBar.setRange( 0, 0 )
126-
if not polygon:
127-
y = bound.yMaximum()
128-
while y >= bound.yMinimum():
129-
pt1 = QgsPoint(bound.xMinimum(), y)
130-
pt2 = QgsPoint(bound.xMaximum(), y)
131-
line = [pt1, pt2]
132-
outFeat.setGeometry(outGeom.fromPolyline(line))
133-
outFeat.addAttribute(0, QVariant(idVar))
134-
outFeat.addAttribute(1, QVariant(y))
135-
writer.addFeature(outFeat)
136-
y = y - yOffset
137-
idVar = idVar + 1
138-
x = bound.xMinimum()
139-
while x <= bound.xMaximum():
140-
pt1 = QgsPoint(x, bound.yMaximum())
141-
pt2 = QgsPoint(x, bound.yMinimum())
142-
line = [pt1, pt2]
143-
outFeat.setGeometry(outGeom.fromPolyline(line))
144-
outFeat.addAttribute(0, QVariant(idVar))
145-
outFeat.addAttribute(1, QVariant(x))
146-
writer.addFeature(outFeat)
147-
x = x + xOffset
148-
idVar = idVar + 1
149-
else:
150-
y = bound.yMaximum()
151-
while y >= bound.yMinimum():
152-
x = bound.xMinimum()
153-
while x <= bound.xMaximum():
154-
pt1 = QgsPoint(x, y)
155-
pt2 = QgsPoint(x + xOffset, y)
156-
pt3 = QgsPoint(x + xOffset, y - yOffset)
157-
pt4 = QgsPoint(x, y - yOffset)
158-
pt5 = QgsPoint(x, y)
159-
polygon = [[pt1, pt2, pt3, pt4, pt5]]
160-
outFeat.setGeometry(outGeom.fromPolygon(polygon))
161-
outFeat.addAttribute(0, QVariant(idVar))
162-
outFeat.addAttribute(1, QVariant(x))
163-
outFeat.addAttribute(2, QVariant(x + xOffset))
164-
outFeat.addAttribute(3, QVariant(y - yOffset))
165-
outFeat.addAttribute(4, QVariant(y))
166-
writer.addFeature(outFeat)
167-
idVar = idVar + 1
168-
x = x + xOffset
169-
y = y - yOffset
170-
self.progressBar.setRange( 0, 100 )
171-
del writer
105+
def compute( self, bound, xOffset, yOffset, polygon ):
106+
crs = self.canvas.mapRenderer().destinationSrs()
107+
if not crs.isValid(): crs = None
108+
if polygon:
109+
fields = {0:QgsField("ID", QVariant.Int), 1:QgsField("XMIN", QVariant.Double), 2:QgsField("XMAX", QVariant.Double),
110+
3:QgsField("YMIN", QVariant.Double), 4:QgsField("YMAX", QVariant.Double)}
111+
check = QFile(self.shapefileName)
112+
if check.exists():
113+
if not QgsVectorFileWriter.deleteShapeFile(self.shapefileName):
114+
return
115+
writer = QgsVectorFileWriter(self.shapefileName, self.encoding, fields, QGis.WKBPolygon, crs)
116+
#writer = QgsVectorFileWriter(outPath, "CP1250", fields, QGis.WKBPolygon, None)
117+
else:
118+
fields = {0:QgsField("ID", QVariant.Int), 1:QgsField("COORD", QVariant.Double)}
119+
check = QFile(self.shapefileName)
120+
if check.exists():
121+
if not QgsVectorFileWriter.deleteShapeFile(self.shapefileName):
122+
return
123+
writer = QgsVectorFileWriter(self.shapefileName, self.encoding, fields, QGis.WKBLineString, crs)
124+
#writer = QgsVectorFileWriter(unicode(outPath), "CP1250", fields, QGis.WKBLineString, None)
125+
outFeat = QgsFeature()
126+
outGeom = QgsGeometry()
127+
idVar = 0
128+
self.progressBar.setRange( 0, 0 )
129+
if not polygon:
130+
y = bound.yMaximum()
131+
while y >= bound.yMinimum():
132+
pt1 = QgsPoint(bound.xMinimum(), y)
133+
pt2 = QgsPoint(bound.xMaximum(), y)
134+
line = [pt1, pt2]
135+
outFeat.setGeometry(outGeom.fromPolyline(line))
136+
outFeat.addAttribute(0, QVariant(idVar))
137+
outFeat.addAttribute(1, QVariant(y))
138+
writer.addFeature(outFeat)
139+
y = y - yOffset
140+
idVar = idVar + 1
141+
x = bound.xMinimum()
142+
while x <= bound.xMaximum():
143+
pt1 = QgsPoint(x, bound.yMaximum())
144+
pt2 = QgsPoint(x, bound.yMinimum())
145+
line = [pt1, pt2]
146+
outFeat.setGeometry(outGeom.fromPolyline(line))
147+
outFeat.addAttribute(0, QVariant(idVar))
148+
outFeat.addAttribute(1, QVariant(x))
149+
writer.addFeature(outFeat)
150+
x = x + xOffset
151+
idVar = idVar + 1
152+
else:
153+
y = bound.yMaximum()
154+
while y >= bound.yMinimum():
155+
x = bound.xMinimum()
156+
while x <= bound.xMaximum():
157+
pt1 = QgsPoint(x, y)
158+
pt2 = QgsPoint(x + xOffset, y)
159+
pt3 = QgsPoint(x + xOffset, y - yOffset)
160+
pt4 = QgsPoint(x, y - yOffset)
161+
pt5 = QgsPoint(x, y)
162+
polygon = [[pt1, pt2, pt3, pt4, pt5]]
163+
outFeat.setGeometry(outGeom.fromPolygon(polygon))
164+
outFeat.addAttribute(0, QVariant(idVar))
165+
outFeat.addAttribute(1, QVariant(x))
166+
outFeat.addAttribute(2, QVariant(x + xOffset))
167+
outFeat.addAttribute(3, QVariant(y - yOffset))
168+
outFeat.addAttribute(4, QVariant(y))
169+
writer.addFeature(outFeat)
170+
idVar = idVar + 1
171+
x = x + xOffset
172+
y = y - yOffset
173+
self.progressBar.setRange( 0, 100 )
174+
del writer
172175

173-
def outFile(self):
174-
self.outShape.clear()
175-
( self.shapefileName, self.encoding ) = ftools_utils.saveDialog( self )
176-
if self.shapefileName is None or self.encoding is None:
177-
return
178-
self.outShape.setText( QString( self.shapefileName ) )
176+
def outFile(self):
177+
self.outShape.clear()
178+
( self.shapefileName, self.encoding ) = ftools_utils.saveDialog( self )
179+
if self.shapefileName is None or self.encoding is None:
180+
return
181+
self.outShape.setText( QString( self.shapefileName ) )
179182

180-
def getVectorLayerByName(self, myName):
181-
mc = self.iface.mapCanvas()
182-
nLayers = mc.layerCount()
183-
for l in range(nLayers):
184-
layer = mc.layer(l)
185-
if unicode(layer.name()) == unicode(myName):
186-
vlayer = QgsVectorLayer(unicode(layer.source()), unicode(myName), unicode(layer.dataProvider().name()))
187-
if vlayer.isValid():
188-
return vlayer
183+
def getVectorLayerByName(self, myName):
184+
mc = self.iface.mapCanvas()
185+
nLayers = mc.layerCount()
186+
for l in range(nLayers):
187+
layer = mc.layer(l)
188+
if unicode(layer.name()) == unicode(myName):
189+
vlayer = QgsVectorLayer(unicode(layer.source()), unicode(myName), unicode(layer.dataProvider().name()))
190+
if vlayer.isValid():
191+
return vlayer
189192

190-
def getMapLayerByName(self, myName):
191-
mc = self.iface.mapCanvas()
192-
nLayers = mc.layerCount()
193-
for l in range(nLayers):
194-
layer = mc.layer(l)
195-
if unicode(layer.name()) == unicode(myName):
196-
if layer.isValid():
197-
return layer
193+
def getMapLayerByName(self, myName):
194+
mc = self.iface.mapCanvas()
195+
nLayers = mc.layerCount()
196+
for l in range(nLayers):
197+
layer = mc.layer(l)
198+
if unicode(layer.name()) == unicode(myName):
199+
if layer.isValid():
200+
return layer

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