/
utils.py
695 lines (631 loc) · 26.4 KB
/
utils.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
# qgis-ol3 Creates OpenLayers map from QGIS layers
# Copyright (C) 2014 Victor Olaya (volayaf@gmail.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.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import os
import time
import re
import shutil
import sys
from io import StringIO
from qgis.PyQt.QtCore import QDir, QVariant
from qgis.PyQt.QtGui import QPainter
from qgis.core import (QgsApplication,
QgsProject,
QgsCoordinateReferenceSystem,
QgsCoordinateTransform,
QgsVectorLayer,
QgsField,
QgsFeature,
QgsFeatureRequest,
QgsRenderContext,
QgsExpression,
QgsExpressionContext,
QgsExpressionContextUtils,
QgsCategorizedSymbolRenderer,
QgsGraduatedSymbolRenderer,
QgsRuleBasedRenderer,
QgsNullSymbolRenderer,
QgsVectorFileWriter,
QgsRasterFileWriter,
QgsRasterPipe,
QgsMessageLog,
QgsWkbTypes,
Qgs25DRenderer,
QgsGeometryGeneratorSymbolLayer)
from qgis.utils import Qgis
import processing
import tempfile
NO_POPUP = 0
ALL_ATTRIBUTES = 1
TYPE_MAP = {
QgsWkbTypes.Point: 'Point',
QgsWkbTypes.Point25D: 'Point',
QgsWkbTypes.PointZ: 'Point',
QgsWkbTypes.PointM: 'Point',
QgsWkbTypes.PointZM: 'Point',
QgsWkbTypes.LineString: 'LineString',
QgsWkbTypes.LineStringM: 'LineString',
QgsWkbTypes.LineStringZ: 'LineString',
QgsWkbTypes.LineStringZM: 'LineString',
QgsWkbTypes.LineString25D: 'LineString',
QgsWkbTypes.CircularString: 'LineString',
QgsWkbTypes.CircularStringZ: 'LineString',
QgsWkbTypes.CircularStringM: 'LineString',
QgsWkbTypes.CircularStringZM: 'LineString',
QgsWkbTypes.CompoundCurveZ: 'LineString',
QgsWkbTypes.CompoundCurveM: 'LineString',
QgsWkbTypes.CompoundCurveZM: 'LineString',
QgsWkbTypes.MultiLineStringZ: 'LineString',
QgsWkbTypes.MultiLineStringM: 'LineString',
QgsWkbTypes.MultiCurve: 'LineString',
QgsWkbTypes.MultiCurveM: 'LineString',
QgsWkbTypes.MultiCurveZ: 'LineString',
QgsWkbTypes.MultiCurveZM: 'LineString',
QgsWkbTypes.Polygon: 'Polygon',
QgsWkbTypes.PolygonZ: 'Polygon',
QgsWkbTypes.PolygonM: 'Polygon',
QgsWkbTypes.PolygonZM: 'Polygon',
QgsWkbTypes.Polygon25D: 'Polygon',
QgsWkbTypes.CurvePolygon: 'Polygon',
QgsWkbTypes.CurvePolygonZ: 'Polygon',
QgsWkbTypes.CurvePolygonM: 'Polygon',
QgsWkbTypes.CurvePolygonZM: 'Polygon',
QgsWkbTypes.MultiPolygonZ: 'Polygon',
QgsWkbTypes.Triangle: 'Polygon',
QgsWkbTypes.TriangleZ: 'Polygon',
QgsWkbTypes.TriangleM: 'Polygon',
QgsWkbTypes.TriangleZM: 'Polygon',
QgsWkbTypes.MultiPoint: 'MultiPoint',
QgsWkbTypes.MultiPoint25D: 'MultiPoint',
QgsWkbTypes.MultiPointZ: 'MultiPoint',
QgsWkbTypes.MultiPointM: 'MultiPoint',
QgsWkbTypes.MultiPointZM: 'MultiPoint',
QgsWkbTypes.MultiLineString: 'MultiLineString',
QgsWkbTypes.MultiLineStringM: 'MultiLineString',
QgsWkbTypes.MultiLineStringZ: 'MultiLineString',
QgsWkbTypes.MultiLineStringZM: 'MultiLineString',
QgsWkbTypes.MultiLineString25D: 'MultiLineString',
QgsWkbTypes.MultiPolygon: 'MultiPolygon',
QgsWkbTypes.MultiPolygon25D: 'MultiPolygon',
QgsWkbTypes.MultiPolygonZM: 'MultiPolygon',
QgsWkbTypes.MultiPolygonM: 'MultiPolygon'}
MB_TYPE_MAP = {
'Point': 'symbol',
'LineString': 'line',
'Polygon': 'fill'}
BLEND_MODES = {
QPainter.CompositionMode_SourceOver: 'normal',
QPainter.CompositionMode_Multiply: 'multiply',
QPainter.CompositionMode_Screen: 'screen',
QPainter.CompositionMode_Overlay: 'overlay',
QPainter.CompositionMode_Darken: 'darken',
QPainter.CompositionMode_Lighten: 'lighten',
QPainter.CompositionMode_ColorDodge: 'color-dodge',
QPainter.CompositionMode_ColorBurn: 'color-burn',
QPainter.CompositionMode_HardLight: 'hard-light',
QPainter.CompositionMode_SoftLight: 'soft-light',
QPainter.CompositionMode_Difference: 'difference',
QPainter.CompositionMode_Exclusion: 'exclusion'}
PLACEMENT = ['bottomleft', 'topleft', 'topright', 'bottomleft', 'bottomright']
def tempFolder():
tempDir = os.path.join(QDir.tempPath(), 'qgis2web')
if not QDir(tempDir).exists():
QDir().mkpath(tempDir)
return os.path.abspath(tempDir)
def getUsedFields(layer):
fields = []
try:
fields.append(layer.renderer().classAttribute())
except Exception:
pass
labelsEnabled = layer.customProperty("labeling/enabled").lower() == "true"
if labelsEnabled:
fields.append(layer.customProperty("labeling/fieldName"))
return fields
def writeTmpLayer(layer, restrictToExtent, iface, extent):
if layer.wkbType() == QgsWkbTypes.NoGeometry:
return
fields = layer.fields()
usedFields = []
for count, field in enumerate(fields):
fieldIndex = fields.indexFromName(field.name())
editorWidget = layer.editorWidgetSetup(fieldIndex).type()
addField = False
try:
if layer.renderer().classAttribute() == field.name():
addField = True
except Exception:
pass
if layer.customProperty("labeling/fieldName") == field.name():
addField = True
if (editorWidget != 'Hidden'):
addField = True
if addField:
usedFields.append(count)
uri = TYPE_MAP[layer.wkbType()]
crs = layer.crs()
if crs.isValid():
uri += '?crs=' + crs.authid()
for field in usedFields:
fieldIndex = layer.fields().indexFromName(
layer.fields().field(field).name())
editorWidget = layer.editorWidgetSetup(fieldIndex).type()
fieldType = layer.fields().field(field).type()
fieldName = layer.fields().field(field).name()
fieldLength = layer.fields().field(field).length()
if (editorWidget == 'Hidden'):
fieldName = "q2wHide_" + fieldName
if fieldType == QVariant.Double or fieldType == QVariant.Int:
fieldType = "double"
else:
fieldType = "string"
uri += '&field=' + fieldName + ":" + fieldType + "(%d)" % fieldLength
newlayer = QgsVectorLayer(uri, layer.name(), 'memory')
writer = newlayer.dataProvider()
outFeat = QgsFeature()
if restrictToExtent and extent == "Canvas extent":
canvas = iface.mapCanvas()
extent = canvas.extent()
canvasCRS = canvas.mapSettings().destinationCrs()
layerCRS = layer.crs()
try:
transform = QgsCoordinateTransform(canvasCRS, layerCRS,
QgsProject.instance())
except Exception:
transform = QgsCoordinateTransform(canvasCRS, layerCRS)
projectedExtent = transform.transformBoundingBox(extent)
request = QgsFeatureRequest(projectedExtent)
request.setFlags(QgsFeatureRequest.ExactIntersect)
features = layer.getFeatures(request)
else:
features = layer.getFeatures()
for feature in features:
if feature.geometry() is not None:
outFeat.setGeometry(feature.geometry())
attrs = [feature[f] for f in usedFields]
if attrs:
outFeat.setAttributes(attrs)
writer.addFeatures([outFeat])
return newlayer
def exportLayers(iface, layers, folder, precision, optimize, popupField, json,
restrictToExtent, extent, feedback, matchCRS):
feedback.showFeedback('Exporting layers...')
layersFolder = os.path.join(folder, "layers")
QDir().mkpath(layersFolder)
for count, (layer, encode2json, popup) in enumerate(zip(layers, json,
popupField)):
sln = safeName(layer.name()) + "_" + str(count)
vts = layer.customProperty("VectorTilesReader/vector_tile_source")
if (layer.type() == layer.VectorLayer and vts is None and
(layer.providerType() != "WFS" or encode2json)):
feedback.showFeedback('Exporting %s to JSON...' % layer.name())
crs = QgsCoordinateReferenceSystem("EPSG:4326")
exportVector(layer, sln, layersFolder, restrictToExtent,
iface, extent, precision, crs, optimize)
feedback.completeStep()
elif (layer.type() == layer.RasterLayer and
layer.providerType() != "wms"):
feedback.showFeedback('Exporting %s as raster...' % layer.name())
exportRaster(layer, count, layersFolder, feedback, iface, matchCRS)
feedback.completeStep()
feedback.completeStep()
def exportVector(layer, sln, layersFolder, restrictToExtent, iface,
extent, precision, crs, minify):
canvas = iface.mapCanvas()
cleanLayer = writeTmpLayer(layer, restrictToExtent, iface, extent)
if is25d(layer, canvas, restrictToExtent, extent):
add25dAttributes(cleanLayer, layer, canvas)
tmpPath = os.path.join(layersFolder, sln + ".json")
path = os.path.join(layersFolder, sln + ".js")
options = []
if precision != "maintain":
options.append("COORDINATE_PRECISION=" + str(precision))
e, err = QgsVectorFileWriter.writeAsVectorFormat(cleanLayer, tmpPath,
"utf-8", crs, 'GeoJson',
0, layerOptions=options)
if e == QgsVectorFileWriter.NoError:
with open(path, mode="w", encoding="utf8") as f:
f.write("var %s = " % ("json_" + sln))
with open(tmpPath, encoding="utf8") as tmpFile:
for line in tmpFile:
if minify:
line = line.strip("\n\t ")
line = removeSpaces(line)
f.write(line)
os.remove(tmpPath)
else:
QgsMessageLog.logMessage(
"Could not write json file {}: {}".format(tmpPath, err),
"qgis2web",
level=Qgis.Critical)
return
fields = layer.fields()
for field in fields:
exportImages(layer, field.name(), layersFolder + "/tmp.tmp")
def add25dAttributes(cleanLayer, layer, canvas):
provider = cleanLayer.dataProvider()
provider.addAttributes([QgsField("height", QVariant.Double),
QgsField("wallColor", QVariant.String),
QgsField("roofColor", QVariant.String)])
cleanLayer.updateFields()
fields = cleanLayer.fields()
renderer = layer.renderer()
renderContext = QgsRenderContext.fromMapSettings(canvas.mapSettings())
feats = layer.getFeatures()
context = QgsExpressionContext()
context.appendScope(QgsExpressionContextUtils.layerScope(layer))
expression = QgsExpression('eval(@qgis_25d_height)')
heightField = fields.indexFromName("height")
wallField = fields.indexFromName("wallColor")
roofField = fields.indexFromName("roofColor")
renderer.startRender(renderContext, fields)
cleanLayer.startEditing()
for feat in feats:
context.setFeature(feat)
height = expression.evaluate(context)
if isinstance(renderer, QgsCategorizedSymbolRenderer):
classAttribute = renderer.classAttribute()
attrValue = feat.attribute(classAttribute)
catIndex = renderer.categoryIndexForValue(attrValue)
categories = renderer.categories()
symbol = categories[catIndex].symbol()
elif isinstance(renderer, QgsGraduatedSymbolRenderer):
classAttribute = renderer.classAttribute()
attrValue = feat.attribute(classAttribute)
ranges = renderer.ranges()
for range in ranges:
if (attrValue >= range.lowerValue() and
attrValue <= range.upperValue()):
symbol = range.symbol().clone()
else:
symbol = renderer.symbolForFeature(feat, renderContext)
sl1 = symbol.symbolLayer(1)
sl2 = symbol.symbolLayer(2)
wallColor = sl1.subSymbol().color().name()
roofColor = sl2.subSymbol().color().name()
provider.changeAttributeValues({feat.id() + 1: {heightField: height,
wallField: wallColor,
roofField: roofColor}})
cleanLayer.commitChanges()
renderer.stopRender(renderContext)
def exportRaster(layer, count, layersFolder, feedback, iface, matchCRS):
feedback.showFeedback("Exporting %s to PNG..." % layer.name())
name_ts = safeName(layer.name()) + str(count) + str(int(time.time()))
# We need to create a new file to export style
piped_file = os.path.join(tempfile.gettempdir(), name_ts + '_piped.tif')
piped_extent = layer.extent()
# piped_width = layer.height()
piped_height = layer.width()
piped_crs = layer.crs()
piped_renderer = layer.renderer()
piped_provider = layer.dataProvider()
pipe = QgsRasterPipe()
pipe.set(piped_provider.clone())
pipe.set(piped_renderer.clone())
file_writer = QgsRasterFileWriter(piped_file)
file_writer.writeRaster(pipe, piped_height, -1, piped_extent, piped_crs)
# Export layer as PNG
out_raster = os.path.join(layersFolder,
safeName(layer.name()) + "_" +
str(count) + ".png")
projectCRS = iface.mapCanvas().mapSettings().destinationCrs()
if not (matchCRS and layer.crs() == projectCRS):
# Extent of the layer in EPSG:3857
crsSrc = layer.crs()
crsDest = QgsCoordinateReferenceSystem(3857)
try:
xform = QgsCoordinateTransform(crsSrc, crsDest,
QgsProject.instance())
except Exception:
xform = QgsCoordinateTransform(crsSrc, crsDest)
extentRep = xform.transformBoundingBox(layer.extent())
extentRepNew = ','.join([str(extentRep.xMinimum()),
str(extentRep.xMaximum()),
str(extentRep.yMinimum()),
str(extentRep.yMaximum())])
# Reproject in 3857
piped_3857 = os.path.join(tempfile.gettempdir(),
name_ts + '_piped_3857.tif')
# qgis_version = Qgis.QGIS_VERSION
old_stdout = sys.stdout
sys.stdout = mystdout = StringIO()
try:
processing.algorithmHelp("gdal:warpreproject")
except Exception:
pass
sys.stdout = old_stdout
params = {
"INPUT": piped_file,
"SOURCE_CRS": layer.crs().authid(),
"TARGET_CRS": "EPSG:3857",
"NODATA": 0,
"TARGET_RESOLUTION": 0,
"RESAMPLING": 2,
"TARGET_EXTENT": extentRepNew,
"EXT_CRS": "EPSG:3857",
"TARGET_EXTENT_CRS": "EPSG:3857",
"DATA_TYPE": 0,
"COMPRESS": 4,
"JPEGCOMPRESSION": 75,
"ZLEVEL": 6,
"PREDICTOR": 1,
"TILED": False,
"BIGTIFF": 0,
"TFW": False,
"MULTITHREADING": False,
"COPY_SUBDATASETS": False,
"EXTRA": "",
"OUTPUT": piped_3857
}
warpArgs = {}
lines = mystdout.getvalue()
for count, line in enumerate(lines.split("\n")):
if count != 0 and ":" in line:
try:
k = line.split(":")[0]
warpArgs[k] = params[k]
except Exception:
pass
try:
processing.run("gdal:warpreproject", warpArgs)
except Exception:
shutil.copyfile(piped_file, piped_3857)
try:
processing.run("gdal:translate", {"INPUT": piped_3857,
"OUTSIZE": 100,
"OUTSIZE_PERC": True,
"NODATA": 0,
"EXPAND": 0,
"TARGET_CRS": "",
"PROJWIN": extentRepNew,
"SDS": False,
"DATA_TYPE": 0,
"COMPRESS": 4,
"JPEGCOMPRESSION": 75,
"ZLEVEL": 6,
"PREDICTOR": 1,
"TILED": False,
"BIGTIFF": 0,
"TFW": False,
"COPY_SUBDATASETS": False,
"OPTIONS": "",
"OUTPUT": out_raster})
except Exception:
shutil.copyfile(piped_3857, out_raster)
else:
srcExtent = ','.join([str(piped_extent.xMinimum()),
str(piped_extent.xMaximum()),
str(piped_extent.yMinimum()),
str(piped_extent.yMaximum())])
processing.run("gdal:translate", {"INPUT": piped_file,
"OUTSIZE": 100,
"OUTSIZE_PERC": True,
"NODATA": 0,
"EXPAND": 0,
"TARGET_CRS": "",
"PROJWIN": srcExtent,
"SDS": False,
"DATA_TYPE": 0,
"COMPRESS": 4,
"JPEGCOMPRESSION": 75,
"ZLEVEL": 6,
"PREDICTOR": 1,
"TILED": False,
"BIGTIFF": 0,
"TFW": False,
"COPY_SUBDATASETS": False,
"OPTIONS": "",
"OUTPUT": out_raster})
def is25d(layer, canvas, restrictToExtent, extent):
if layer.type() != layer.VectorLayer:
return False
if layer.geometryType() != QgsWkbTypes.PolygonGeometry:
return False
vts = layer.customProperty("VectorTilesReader/vector_tile_source")
if vts is not None:
return False
renderer = layer.renderer()
if isinstance(renderer, QgsNullSymbolRenderer):
return False
if isinstance(renderer, Qgs25DRenderer):
return True
symbols = []
if isinstance(renderer, QgsCategorizedSymbolRenderer):
categories = renderer.categories()
for category in categories:
symbols.append(category.symbol())
elif isinstance(renderer, QgsGraduatedSymbolRenderer):
ranges = renderer.ranges()
for range in ranges:
symbols.append(range.symbol())
elif isinstance(renderer, QgsRuleBasedRenderer):
rules = renderer.rootRule().children()
for rule in rules:
symbols.append(rule.symbol())
else:
renderContext = QgsRenderContext.fromMapSettings(canvas.mapSettings())
fields = layer.fields()
if restrictToExtent and extent == "Canvas extent":
request = QgsFeatureRequest(canvas.extent())
request.setFlags(QgsFeatureRequest.ExactIntersect)
features = layer.getFeatures(request)
else:
features = layer.getFeatures()
renderer.startRender(renderContext, fields)
for feature in features:
symbol = renderer.symbolForFeature(feature, renderContext)
symbols.append(symbol)
renderer.stopRender(renderContext)
for sym in symbols:
try:
sl1 = sym.symbolLayer(1)
sl2 = sym.symbolLayer(2)
except IndexError:
return False
if (isinstance(sl1, QgsGeometryGeneratorSymbolLayer) and
isinstance(sl2, QgsGeometryGeneratorSymbolLayer)):
return True
return False
def safeName(name):
# TODO: we are assuming that at least one character is valid...
validChr = '_0123456789abcdefghijklmnopqrstuvwxyz' \
'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
return ''.join(c for c in name if c in validChr)
def removeSpaces(txt):
return '"'.join(it if i % 2 else ''.join(it.split())
for i, it in enumerate(txt.split('"')))
def scaleToZoom(scale):
if scale < 1000:
return 19
elif scale < 2000:
return 18
elif scale < 4000:
return 17
elif scale < 8000:
return 16
elif scale < 15000:
return 15
elif scale < 35000:
return 14
elif scale < 70000:
return 13
elif scale < 150000:
return 12
elif scale < 250000:
return 11
elif scale < 500000:
return 10
elif scale < 1000000:
return 9
elif scale < 2000000:
return 8
elif scale < 4000000:
return 7
elif scale < 10000000:
return 6
elif scale < 15000000:
return 5
elif scale < 35000000:
return 4
elif scale < 70000000:
return 3
elif scale < 150000000:
return 2
elif scale < 250000000:
return 1
else:
return 0
def replaceInTemplate(template, values):
path = os.path.join(QgsApplication.qgisSettingsDirPath(),
"qgis2web",
"templates",
template)
with open(path) as f:
lines = f.readlines()
s = "".join(lines)
for name, value in values.items():
s = s.replace(name, value)
return s
def exportImages(layer, field, layerFileName):
field_index = layer.fields().indexFromName(field)
widget = layer.editorWidgetSetup(field_index).type()
if widget != 'ExternalResource':
return
fr = QgsFeatureRequest()
fr.setSubsetOfAttributes([field_index])
for feature in layer.getFeatures(fr):
photo_file_name = feature.attribute(field)
if type(photo_file_name) is not str:
continue
source_file_name = photo_file_name
if not os.path.isabs(source_file_name):
prj_fname = QgsProject.instance().fileName()
source_file_name = os.path.join(os.path.dirname(prj_fname),
source_file_name)
photo_file_name = re.sub(r'[\\/:]', '_', photo_file_name).strip()
photo_file_name = os.path.join(os.path.dirname(layerFileName),
'..', 'images', photo_file_name)
try:
shutil.copyfile(source_file_name, photo_file_name)
except IOError:
pass
def handleHiddenField(layer, field):
fieldIndex = layer.fields().indexFromName(field)
editorWidget = layer.editorWidgetSetup(fieldIndex).type()
if (editorWidget == 'Hidden'):
fieldName = "q2wHide_" + field
else:
fieldName = field
return fieldName
def getRGBAColor(color, alpha):
r, g, b, a = color.split(",")[:4]
a = (float(a) / 255) * alpha
return "'rgba(%s)'" % ",".join([r, g, b, str(a)])
def boilType(fieldType):
fType = None
if fieldType.lower() in ["boolean", "bool"]:
fType = "bool"
if fieldType.lower() in ["double", "real", "decimal", "numeric"]:
fType = "real"
if fieldType.lower() in ["integer", "integer64", "uint",
"int", "longlong", "int4", "ulonglong"]:
fType = "int"
if fieldType.lower() in ["char", "string", "text", "varchar", "nchar",
"nvarchar"]:
fType = "str"
if fieldType.lower() in ["date"]:
fType = "date"
if fieldType.lower() in ["datetime", "timestamp",
"timestamp without time zone"]:
fType = "datetime"
if fieldType.lower() in ["time"]:
fType = "time"
return fType
def returnFilterValues(layer_list, fieldName, fieldType):
if fieldType.lower() == "bool":
return {"name": fieldName, "type": fieldType,
"values": ["true", "false"]}
filterValues = []
for layer in layer_list:
if layer.type() == layer.VectorLayer:
fields = layer.fields()
for f in fields:
if boilType(f.typeName()) == fieldType:
if f.name() == fieldName:
iterator = layer.getFeatures()
for feature in iterator:
if feature[fieldName] is not None:
filterValues.append(feature[fieldName])
if filterValues == []:
return
if fieldType == "str":
cleanFilterValues = list(dict.fromkeys(filterValues))
cleanFilterValues.sort()
if fieldType == "int":
cleanFilterValues = [min(filterValues) if min(filterValues) >= 0
else 0,
max(filterValues) if max(filterValues) >= 0
else 0]
if cleanFilterValues[0] == cleanFilterValues[1]:
cleanFilterValues[1] = cleanFilterValues[0] + 1
if fieldType in ["date", "time", "real", "datetime"]:
cleanFilterValues = [min(filter(None, filterValues)),
max(filterValues)]
if cleanFilterValues[0] == cleanFilterValues[1]:
if fieldType == "real":
add = 1 / 10 * (cleanFilterValues[1] - cleanFilterValues[0])
cleanFilterValues[1] = cleanFilterValues[0] + add
return {"name": fieldName, "type": fieldType, "values": cleanFilterValues}