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#Copyright ReportLab Europe Ltd. 2000-2017
#see license.txt for license details
"""
Tests for the text Label class.
"""
from reportlab.lib.testutils import setOutDir,setOutDir,makeSuiteForClasses, outputfile, printLocation
setOutDir(__name__)
import os, sys, copy
from os.path import join, basename, splitext
import unittest
from reportlab.lib import colors
from reportlab.lib.units import cm
from reportlab.lib.pagesizes import A4
from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle
from reportlab.pdfgen.canvas import Canvas
from reportlab.graphics.shapes import *
from reportlab.graphics.charts.textlabels import Label
from reportlab.platypus.flowables import Spacer, PageBreak
from reportlab.platypus.paragraph import Paragraph
from reportlab.platypus.xpreformatted import XPreformatted
from reportlab.platypus.frames import Frame
from reportlab.platypus.doctemplate import PageTemplate, BaseDocTemplate
def myMainPageFrame(canvas, doc):
"The page frame used for all PDF documents."
canvas.saveState()
#canvas.rect(2.5*cm, 2.5*cm, 15*cm, 25*cm)
canvas.setFont('Times-Roman', 12)
pageNumber = canvas.getPageNumber()
canvas.drawString(10*cm, cm, str(pageNumber))
canvas.restoreState()
class MyDocTemplate(BaseDocTemplate):
"The document template used for all PDF documents."
_invalidInitArgs = ('pageTemplates',)
def __init__(self, filename, **kw):
frame1 = Frame(2.5*cm, 2.5*cm, 15*cm, 25*cm, id='F1')
self.allowSplitting = 0
BaseDocTemplate.__init__(self, filename, **kw)
template = PageTemplate('normal', [frame1], myMainPageFrame)
self.addPageTemplates(template)
class LabelTestCase(unittest.TestCase):
"Test Label class."
def _test0(self):
"Perform original test function."
pdfPath = outputfile('test_charts_textlabels.pdf')
c = Canvas(pdfPath)
label = Label()
demoLabel = label.demo()
demoLabel.drawOn(c, 0, 0)
c.save()
def _makeProtoLabel(self):
"Return a label prototype for further modification."
protoLabel = Label()
protoLabel.dx = 0
protoLabel.dy = 0
protoLabel.boxStrokeWidth = 0.1
protoLabel.boxStrokeColor = colors.black
protoLabel.boxFillColor = colors.yellow
# protoLabel.text = 'Hello World!' # Does not work as expected.
return protoLabel
def _makeDrawings(self, protoLabel, text=None):
# Set drawing dimensions.
w, h = drawWidth, drawHeight = 400, 100
drawings = []
for boxAnchors in ('sw se nw ne', 'w e n s', 'c'):
boxAnchors = boxAnchors.split(' ')
# Create drawing.
d = Drawing(w, h)
d.add(Line(0, h*0.5, w, h*0.5, strokeColor=colors.gray, strokeWidth=0.5))
d.add(Line(w*0.5 ,0, w*0.5, h, strokeColor=colors.gray, strokeWidth=0.5))
labels = []
for boxAnchor in boxAnchors:
# Modify label, put it on a drawing.
label = copy.deepcopy(protoLabel)
label.boxAnchor = boxAnchor
args = {'ba':boxAnchor, 'text':text or 'Hello World!'}
label.setText('(%(ba)s) %(text)s (%(ba)s)' % args)
labels.append(label)
for label in labels:
d.add(label)
drawings.append(d)
return drawings
def test1(self):
"Test all different box anchors."
# Build story.
story = []
styleSheet = getSampleStyleSheet()
bt = styleSheet['BodyText']
h1 = styleSheet['Heading1']
h2 = styleSheet['Heading2']
h3 = styleSheet['Heading3']
story.append(Paragraph('Tests for class <i>Label</i>', h1))
story.append(Paragraph('Testing box anchors', h2))
story.append(Paragraph("""This should display "Hello World" labels
written as black text on a yellow box relative to the origin of the crosshair
axes. The labels indicate their relative position being one of the nine
canonical points of a box: sw, se, nw, ne, w, e, n, s or c (standing for
<i>southwest</i>, <i>southeast</i>... and <i>center</i>).""", bt))
story.append(Spacer(0, 0.5*cm))
# Round 1a
story.append(Paragraph('Helvetica 10pt', h3))
story.append(Spacer(0, 0.5*cm))
w, h = drawWidth, drawHeight = 400, 100
protoLabel = self._makeProtoLabel()
protoLabel.setOrigin(drawWidth*0.5, drawHeight*0.5)
protoLabel.textAnchor = 'start'
protoLabel.fontName = 'Helvetica'
protoLabel.fontSize = 10
drawings = self._makeDrawings(protoLabel)
for d in drawings:
story.append(d)
story.append(Spacer(0, 1*cm))
story.append(PageBreak())
# Round 1b
story.append(Paragraph('Helvetica 18pt', h3))
story.append(Spacer(0, 0.5*cm))
w, h = drawWidth, drawHeight = 400, 100
protoLabel = self._makeProtoLabel()
protoLabel.setOrigin(drawWidth*0.5, drawHeight*0.5)
protoLabel.textAnchor = 'start'
protoLabel.fontName = 'Helvetica'
protoLabel.fontSize = 18
drawings = self._makeDrawings(protoLabel)
for d in drawings:
story.append(d)
story.append(Spacer(0, 1*cm))
story.append(PageBreak())
# Round 1c
try:
from reportlab.pdfbase.pdfmetrics import registerFont
from reportlab.pdfbase.ttfonts import TTFont
fontName = 'Vera'
registerFont(TTFont(fontName, "Vera.ttf"))
except:
fontName = 'Helvetica'
story.append(Paragraph('%s 18pt, multi-line' % fontName, h3))
story.append(Spacer(0, 0.5*cm))
w, h = drawWidth, drawHeight = 400, 100
protoLabel = self._makeProtoLabel()
protoLabel.setOrigin(drawWidth*0.5, drawHeight*0.5)
protoLabel.textAnchor = 'start'
protoLabel.fontName = fontName
protoLabel.fontSize = 18
drawings = self._makeDrawings(protoLabel, text=u'Hello\nW\xf6rld!')
for d in drawings:
story.append(d)
story.append(Spacer(0, 1*cm))
story.append(PageBreak())
story.append(Paragraph('Testing text (and box) anchors', h2))
story.append(Paragraph("""This should display labels as before,
but now with a fixes size and showing some effect of setting the
textAnchor attribute.""", bt))
story.append(Spacer(0, 0.5*cm))
# Round 2a
story.append(Paragraph("Helvetica 10pt, textAnchor='start'", h3))
story.append(Spacer(0, 0.5*cm))
w, h = drawWidth, drawHeight = 400, 100
protoLabel = self._makeProtoLabel()
protoLabel.setOrigin(drawWidth*0.5, drawHeight*0.5)
protoLabel.width = 4*cm
protoLabel.height = 1.5*cm
protoLabel.textAnchor = 'start'
protoLabel.fontName = 'Helvetica'
protoLabel.fontSize = 10
drawings = self._makeDrawings(protoLabel)
for d in drawings:
story.append(d)
story.append(Spacer(0, 1*cm))
story.append(PageBreak())
# Round 2b
story.append(Paragraph("Helvetica 10pt, textAnchor='middle'", h3))
story.append(Spacer(0, 0.5*cm))
w, h = drawWidth, drawHeight = 400, 100
protoLabel = self._makeProtoLabel()
protoLabel.setOrigin(drawWidth*0.5, drawHeight*0.5)
protoLabel.width = 4*cm
protoLabel.height = 1.5*cm
protoLabel.textAnchor = 'middle'
protoLabel.fontName = 'Helvetica'
protoLabel.fontSize = 10
drawings = self._makeDrawings(protoLabel)
for d in drawings:
story.append(d)
story.append(Spacer(0, 1*cm))
story.append(PageBreak())
# Round 2c
story.append(Paragraph("Helvetica 10pt, textAnchor='end'", h3))
story.append(Spacer(0, 0.5*cm))
w, h = drawWidth, drawHeight = 400, 100
protoLabel = self._makeProtoLabel()
protoLabel.setOrigin(drawWidth*0.5, drawHeight*0.5)
protoLabel.width = 4*cm
protoLabel.height = 1.5*cm
protoLabel.textAnchor = 'end'
protoLabel.fontName = 'Helvetica'
protoLabel.fontSize = 10
drawings = self._makeDrawings(protoLabel)
for d in drawings:
story.append(d)
story.append(Spacer(0, 1*cm))
story.append(PageBreak())
# Round 2d
story.append(Paragraph("Helvetica 10pt, multi-line, textAnchor='start'", h3))
story.append(Spacer(0, 0.5*cm))
w, h = drawWidth, drawHeight = 400, 100
protoLabel = self._makeProtoLabel()
protoLabel.setOrigin(drawWidth*0.5, drawHeight*0.5)
protoLabel.width = 4*cm
protoLabel.height = 1.5*cm
protoLabel.textAnchor = 'start'
protoLabel.fontName = 'Helvetica'
protoLabel.fontSize = 10
drawings = self._makeDrawings(protoLabel, text='Hello\nWorld!')
for d in drawings:
story.append(d)
story.append(Spacer(0, 1*cm))
story.append(PageBreak())
path = outputfile('test_charts_textlabels.pdf')
doc = MyDocTemplate(path)
doc.multiBuild(story)
def makeSuite():
return makeSuiteForClasses(LabelTestCase)
#noruntests
if __name__ == "__main__":
unittest.TextTestRunner().run(makeSuite())
printLocation()
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