本文整理汇总了Python中reportlab.pdfgen.canvas.Canvas.setFillOverprint方法的典型用法代码示例。如果您正苦于以下问题：Python Canvas.setFillOverprint方法的具体用法？Python Canvas.setFillOverprint怎么用？Python Canvas.setFillOverprint使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类reportlab.pdfgen.canvas.Canvas的用法示例。
在下文中一共展示了Canvas.setFillOverprint方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test0
# 需要导入模块: from reportlab.pdfgen.canvas import Canvas [as 别名]
# 或者: from reportlab.pdfgen.canvas.Canvas import setFillOverprint [as 别名]
def test0(self):
"This should open in full screen mode."
import os
from reportlab.pdfgen.canvas import Canvas
from reportlab.lib.colors import PCMYKColor, PCMYKColorSep
filename = 'test_pdfgen_overprint.pdf'
desc = "Overprint/knockout tests for ReportLab library"
black = PCMYKColor(0,0,0,100)
cyan = PCMYKColorSep(100,0,0,0,spotName='myCyan')
magenta = PCMYKColorSep(0,100,0,0,spotName='myMagenta')
c = Canvas(filename)
c.setFillColor(black)
c.setFont('Helvetica', 20)
c.drawString(100, 700, desc)
c.setFont('Helvetica', 10)
c.drawString(100, 670, "To view is page properly you probably need to enable 'overprint preview' in Acrobat Reader")
c.drawString(100, 658, "or use a tool like Illustrator, Quark or Acrobat to view separated plates. Starting in")
c.drawString(100, 646, "Acrobat Reader 9 there is a setting that lets you turn on the overprint preview, although")
c.drawString(100, 634, "it's not on by default (Preferences > Page Display > Use Overprint Preview: Always).")
c.drawString(100, 616, "In the top example, the magenta rectangle overprints the cyan one. In the lower one, it")
c.drawString(100, 604, "'knocks out' the cyan underneath which is the default in PDF. This means that the overlap")
c.drawString(100, 592, "area of the first example should show blue, because the two colours merge. However, in many")
c.drawString(100, 580, "PDF viewers and cheap printers, both examples will probably look the same - magenta")
c.drawString(100, 568, "rectangle knocks out part of the cyan one.")
c.drawString(100, 550, "If you can view the separated CMYK plates in a tool like Illustrator, on the cyan plate")
c.drawString(100, 538, "you should see the top rectangle as complete and the bottom one has a chunk knocked out of")
c.drawString(100, 526, "the top right corner.")
c.setFillOverprint(True)
c.setFillColor(cyan)
c.rect(100, 300, 200, 100, fill=True, stroke=False)
c.setFillColor(magenta)
c.rect(200, 350, 200, 100, fill=True, stroke=False)
c.setFillOverprint(False)
c.setFillColor(cyan)
c.rect(100, 100, 200, 100, fill=True, stroke=False)
c.setFillColor(magenta)
c.rect(200, 150, 200, 100, fill=True, stroke=False)
c.save()
assert os.path.exists(filename)