def makeDocument(filename, pageCallBack=None):
#the extra arg is a hack added later, so other
#tests can get hold of the canvas just before it is
#saved
from reportlab.lib.colors import red, green, blue
global titlelist, closeit
titlelist = []
closeit = 0
c = canvas.Canvas(filename)
c.setPageCompression(0)
c.setPageCallBack(pageCallBack)
framePageForm(c) # define the frame form
c.showOutline()
framePage(c, 'PDFgen graphics API test script')
makesubsection(c, "PDFgen", 10 * inch)
#quickie encoding test: when canvas encoding not set,
#the following should do (tm), (r) and (c)
msg_uni = u'copyright\u00A9 trademark\u2122 registered\u00AE scissors\u2702: ReportLab in unicode!'
msg_utf8 = msg_uni.replace('unicode', 'utf8').encode('utf8')
c.drawString(100, 100, msg_uni)
c.drawString(100, 80, msg_utf8)
t = c.beginText(inch, 10 * inch)
t.setFont('Times-Roman', 10)
drawCrossHairs(c, t.getX(), t.getY())
t.textLines("""
The ReportLab library permits you to create PDF documents directly from
your Python code. The "pdfgen" subpackage is the lowest level exposed
to the user and lets you directly position test and graphics on the
page, with access to almost the full range of PDF features.
The API is intended to closely mirror the PDF / Postscript imaging
model. There is an almost one to one correspondence between commands
and PDF operators. However, where PDF provides several ways to do a job,
we have generally only picked one.
The test script attempts to use all of the methods exposed by the Canvas
class, defined in reportlab/pdfgen/canvas.py
First, let's look at text output. There are some basic commands
to draw strings:
- canvas.setFont(fontname, fontsize [, leading])
- canvas.drawString(x, y, text)
- canvas.drawRightString(x, y, text)
- canvas.drawCentredString(x, y, text)
The coordinates are in points starting at the bottom left corner of the
page. When setting a font, the leading (i.e. inter-line spacing)
defaults to 1.2 * fontsize if the fontsize is not provided.
For more sophisticated operations, you can create a Text Object, defined
in reportlab/pdfgen/testobject.py. Text objects produce tighter PDF, run
faster and have many methods for precise control of spacing and position.
Basic usage goes as follows:
- tx = canvas.beginText(x, y)
- tx.textOut('Hello') # this moves the cursor to the right
- tx.textLine('Hello again') # prints a line and moves down
- y = tx.getY() # getX, getY and getCursor track position
- canvas.drawText(tx) # all gets drawn at the end
The green crosshairs below test whether the text cursor is working
properly. They should appear at the bottom left of each relevant
substring.
""")
t.setFillColorRGB(1, 0, 0)
t.setTextOrigin(inch, 4 * inch)
drawCrossHairs(c, t.getX(), t.getY())
t.textOut('textOut moves across:')
drawCrossHairs(c, t.getX(), t.getY())
t.textOut('textOut moves across:')
drawCrossHairs(c, t.getX(), t.getY())
t.textOut('textOut moves across:')
drawCrossHairs(c, t.getX(), t.getY())
t.textLine('')
drawCrossHairs(c, t.getX(), t.getY())
t.textLine('textLine moves down')
drawCrossHairs(c, t.getX(), t.getY())
t.textLine('textLine moves down')
drawCrossHairs(c, t.getX(), t.getY())
t.textLine('textLine moves down')
drawCrossHairs(c, t.getX(), t.getY())
t.setTextOrigin(4 * inch, 3.25 * inch)
drawCrossHairs(c, t.getX(), t.getY())
t.textLines(
'This is a multi-line\nstring with embedded newlines\ndrawn with textLines().\n'
)
drawCrossHairs(c, t.getX(), t.getY())
t.textLines(['This is a list of strings', 'drawn with textLines().'])
c.drawText(t)
t = c.beginText(2 * inch, 2 * inch)
t.setFont('Times-Roman', 10)
drawCrossHairs(c, t.getX(), t.getY())
t.textOut('Small text.')
drawCrossHairs(c, t.getX(), t.getY())
t.setFont('Courier', 14)
t.textOut('Bigger fixed width text.')
drawCrossHairs(c, t.getX(), t.getY())
t.setFont('Times-Roman', 10)
t.textOut('Small text again.')
drawCrossHairs(c, t.getX(), t.getY())
c.drawText(t)
#try out the decimal tabs high on the right.
c.setStrokeColor(colors.silver)
c.line(7 * inch, 6 * inch, 7 * inch, 4.5 * inch)
c.setFillColor(colors.black)
c.setFont('Times-Roman', 10)
c.drawString(6 * inch, 6.2 * inch, "Testing decimal alignment")
c.drawString(6 * inch, 6.05 * inch, "- aim for silver line")
c.line(7 * inch, 6 * inch, 7 * inch, 4.5 * inch)
c.drawAlignedString(7 * inch, 5.8 * inch, "1,234,567.89")
c.drawAlignedString(7 * inch, 5.6 * inch, "3,456.789")
c.drawAlignedString(7 * inch, 5.4 * inch, "123")
c.setFillColor(colors.red)
c.drawAlignedString(7 * inch, 5.2 * inch, "(7,192,302.30)")
#mark the cursor where it stopped
c.showPage()
##############################################################
#
# page 2 - line styles
#
###############################################################
#page 2 - lines and styles
framePage(c, 'Line Drawing Styles')
# three line ends, lines drawn the hard way
#firt make some vertical end markers
c.setDash(4, 4)
c.setLineWidth(0)
c.line(inch, 9.2 * inch, inch, 7.8 * inch)
c.line(3 * inch, 9.2 * inch, 3 * inch, 7.8 * inch)
c.setDash() #clears it
c.setLineWidth(5)
c.setLineCap(0)
p = c.beginPath()
p.moveTo(inch, 9 * inch)
p.lineTo(3 * inch, 9 * inch)
c.drawPath(p)
c.drawString(4 * inch, 9 * inch,
'the default - butt caps project half a width')
makesubsection(c, "caps and joins", 8.5 * inch)
c.setLineCap(1)
p = c.beginPath()
p.moveTo(inch, 8.5 * inch)
p.lineTo(3 * inch, 8.5 * inch)
c.drawPath(p)
c.drawString(4 * inch, 8.5 * inch, 'round caps')
c.setLineCap(2)
p = c.beginPath()
p.moveTo(inch, 8 * inch)
p.lineTo(3 * inch, 8 * inch)
c.drawPath(p)
c.drawString(4 * inch, 8 * inch, 'square caps')
c.setLineCap(0)
# three line joins
c.setLineJoin(0)
p = c.beginPath()
p.moveTo(inch, 7 * inch)
p.lineTo(2 * inch, 7 * inch)
p.lineTo(inch, 6.7 * inch)
c.drawPath(p)
c.drawString(4 * inch, 6.8 * inch, 'Default - mitered join')
c.setLineJoin(1)
p = c.beginPath()
p.moveTo(inch, 6.5 * inch)
p.lineTo(2 * inch, 6.5 * inch)
p.lineTo(inch, 6.2 * inch)
c.drawPath(p)
c.drawString(4 * inch, 6.3 * inch, 'round join')
c.setLineJoin(2)
p = c.beginPath()
p.moveTo(inch, 6 * inch)
p.lineTo(2 * inch, 6 * inch)
p.lineTo(inch, 5.7 * inch)
c.drawPath(p)
c.drawString(4 * inch, 5.8 * inch, 'bevel join')
c.setDash(6, 6)
p = c.beginPath()
p.moveTo(inch, 5 * inch)
p.lineTo(3 * inch, 5 * inch)
c.drawPath(p)
c.drawString(4 * inch, 5 * inch,
'dash 6 points on, 6 off- setDash(6,6) setLineCap(0)')
makesubsection(c, "dash patterns", 5 * inch)
c.setLineCap(1)
p = c.beginPath()
p.moveTo(inch, 4.5 * inch)
p.lineTo(3 * inch, 4.5 * inch)
c.drawPath(p)
c.drawString(4 * inch, 4.5 * inch,
'dash 6 points on, 6 off- setDash(6,6) setLineCap(1)')
c.setLineCap(0)
c.setDash([1, 2, 3, 4, 5, 6], 0)
p = c.beginPath()
p.moveTo(inch, 4.0 * inch)
p.lineTo(3 * inch, 4.0 * inch)
c.drawPath(p)
c.drawString(4 * inch, 4 * inch,
'dash growing - setDash([1,2,3,4,5,6],0) setLineCap(0)')
c.setLineCap(1)
c.setLineJoin(1)
c.setDash(32, 12)
p = c.beginPath()
p.moveTo(inch, 3.0 * inch)
p.lineTo(2.5 * inch, 3.0 * inch)
p.lineTo(inch, 2 * inch)
c.drawPath(p)
c.drawString(4 * inch, 3 * inch,
'dash pattern, join and cap style interacting - ')
c.drawString(4 * inch, 3 * inch - 12,
'round join & miter results in sausages')
c.textAnnotation('Annotation',
Rect=(4 * inch, 3 * inch - 72, inch, inch - 12))
c.showPage()
##############################################################
#
# higher level shapes
#
###############################################################
framePage(c, 'Shape Drawing Routines')
t = c.beginText(inch, 10 * inch)
t.textLines("""
Rather than making your own paths, you have access to a range of shape routines.
These are built in pdfgen out of lines and bezier curves, but use the most compact
set of operators possible. We can add any new ones that are of general use at no
cost to performance.""")
t.textLine()
#line demo
makesubsection(c, "lines", 9 * inch)
c.line(inch, 9 * inch, 3 * inch, 9 * inch)
t.setTextOrigin(4 * inch, 9 * inch)
t.textLine('canvas.line(x1, y1, x2, y2)')
#bezier demo - show control points
makesubsection(c, "bezier curves", 8.5 * inch)
(x1, y1, x2, y2, x3, y3, x4,
y4) = (inch, 7.8 * inch, 1.2 * inch, 8.8 * inch, 3 * inch, 8.8 * inch,
3.5 * inch, 8.05 * inch)
c.bezier(x1, y1, x2, y2, x3, y3, x4, y4)
c.setDash(3, 3)
c.line(x1, y1, x2, y2)
c.line(x3, y3, x4, y4)
c.setDash()
t.setTextOrigin(4 * inch, 8.3 * inch)
t.textLine('canvas.bezier(x1, y1, x2, y2, x3, y3, x4, y4)')
#rectangle
makesubsection(c, "rectangles", 8 * inch)
c.rect(inch, 7 * inch, 2 * inch, 0.75 * inch)
t.setTextOrigin(4 * inch, 7.375 * inch)
t.textLine('canvas.rect(x, y, width, height) - x,y is lower left')
c.roundRect(inch, 6.25 * inch, 2 * inch, 0.6 * inch, 0.1 * inch)
t.setTextOrigin(4 * inch, 6.55 * inch)
t.textLine('canvas.roundRect(x,y,width,height,radius)')
makesubsection(c, "arcs", 8 * inch)
c.arc(inch, 5 * inch, 3 * inch, 6 * inch, 0, 90)
t.setTextOrigin(4 * inch, 5.5 * inch)
t.textLine('canvas.arc(x1, y1, x2, y2, startDeg, extentDeg)')
t.textLine('Note that this is an elliptical arc, not just circular!')
#wedge
makesubsection(c, "wedges", 5 * inch)
c.wedge(inch, 4.5 * inch, 3 * inch, 3.5 * inch, 0, 315)
t.setTextOrigin(4 * inch, 4 * inch)
t.textLine('canvas.wedge(x1, y1, x2, y2, startDeg, extentDeg)')
t.textLine('Note that this is an elliptical arc, not just circular!')
#wedge the other way
c.wedge(inch, 3.75 * inch, 3 * inch, 2.75 * inch, 0, -45)
t.setTextOrigin(4 * inch, 3 * inch)
t.textLine('Use a negative extent to go clockwise')
#circle
makesubsection(c, "circles", 3.5 * inch)
c.circle(1.5 * inch, 2 * inch, 0.5 * inch)
c.circle(3 * inch, 2 * inch, 0.5 * inch)
t.setTextOrigin(4 * inch, 2 * inch)
t.textLine('canvas.circle(x, y, radius)')
c.drawText(t)
c.showPage()
##############################################################
#
# Page 4 - fonts
#
###############################################################
framePage(c, "Font Control")
c.drawString(inch, 10 * inch, 'Listing available fonts...')
y = 9.5 * inch
for fontname in c.getAvailableFonts():
c.setFont(fontname, 24)
c.drawString(inch, y, 'This should be %s' % fontname)
y = y - 28
makesubsection(c, "fonts and colors", 4 * inch)
c.setFont('Times-Roman', 12)
t = c.beginText(inch, 4 * inch)
t.textLines("""Now we'll look at the color functions and how they interact
with the text. In theory, a word is just a shape; so setFillColorRGB()
determines most of what you see. If you specify other text rendering
modes, an outline color could be defined by setStrokeColorRGB() too""")
c.drawText(t)
t = c.beginText(inch, 2.75 * inch)
t.setFont('Times-Bold', 36)
t.setFillColor(green) #green
t.textLine('Green fill, no stroke')
#t.setStrokeColorRGB(1,0,0) #ou can do this in a text object, or the canvas.
t.setStrokeColor(red) #ou can do this in a text object, or the canvas.
t.setTextRenderMode(2) # fill and stroke
t.textLine('Green fill, red stroke - yuk!')
t.setTextRenderMode(0) # back to default - fill only
t.setFillColorRGB(0, 0, 0) #back to default
t.setStrokeColorRGB(0, 0, 0) #ditto
c.drawText(t)
c.showPage()
#########################################################################
#
# Page 5 - character spacing
#
#########################################################################
framePage(c, "Character Spacing")
c.drawString(inch, 10 * inch, 'Listing available fonts...')
def drawBox(x, y, width, height, color=green, anchor='start'):
if anchor == 'end':
x -= width
elif anchor in ('centre', 'center'):
x = 0.5 * width
c.saveState()
c.setDash(2, 2)
c.setStrokeColor(color)
c.setLineWidth(0.01)
c.rect(x, y, width, height, fill=0, stroke=1)
c.restoreState()
y = 9.5 * inch
x = 72
def drawString(x, y, s, fontName, fontSize, cs=1, anchor='start'):
c.setFont(fontName, fontSize)
y -= 12
w = c.stringWidth(s)
func = c.drawString if anchor == 'start' else c.drawRightString if anchor == 'end' else c.drawCentredString
func(x, y, s)
drawBox(x, y, w, 10, anchor=anchor)
y -= 12
func(x, y, s, charSpace=cs)
n = len(s) - 1
drawBox(x, y, w + n, 10, anchor=anchor)
y -= 12
return x, y
x, y = drawString(x, y, u'Hello World', 'Helvetica', 10)
x, y = drawString(x, y, u'M', 'Helvetica', 10)
x, y = drawString(x, y, u'MM', 'Helvetica', 10)
x, y = drawString(x, y, u'M M', 'Helvetica', 10)
x, y = drawString(x, y, u'M M', 'Helvetica', 10)
x = 3 * 72
y = 9.5 * inch
x, y = drawString(x, y, u'Hello World', 'Helvetica', 10, anchor='end')
x, y = drawString(x, y, u'M', 'Helvetica', 10, anchor='end')
x, y = drawString(x, y, u'MM', 'Helvetica', 10, anchor='end')
x, y = drawString(x, y, u'M M', 'Helvetica', 10, anchor='end')
x, y = drawString(x, y, u'M M', 'Helvetica', 10, anchor='end')
c.showPage()
#########################################################################
#
# Page 6 - coord transforms
#
#########################################################################
framePage(c, "Coordinate Transforms")
c.setFont('Times-Roman', 12)
t = c.beginText(inch, 10 * inch)
t.textLines(
"""This shows coordinate transformations. We draw a set of axes,
moving down the page and transforming space before each one.
You can use saveState() and restoreState() to unroll transformations.
Note that functions which track the text cursor give the cursor position
in the current coordinate system; so if you set up a 6 inch high frame
2 inches down the page to draw text in, and move the origin to its top
left, you should stop writing text after six inches and not eight.""")
c.drawText(t)
drawAxes(c, "0. at origin")
c.addLiteral('%about to translate space')
c.translate(2 * inch, 7 * inch)
drawAxes(c, '1. translate near top of page')
c.saveState()
c.translate(1 * inch, -2 * inch)
drawAxes(c, '2. down 2 inches, across 1')
c.restoreState()
c.saveState()
c.translate(0, -3 * inch)
c.scale(2, -1)
drawAxes(c, '3. down 3 from top, scale (2, -1)')
c.restoreState()
c.saveState()
c.translate(0, -5 * inch)
c.rotate(-30)
drawAxes(c, "4. down 5, rotate 30' anticlockwise")
c.restoreState()
c.saveState()
c.translate(3 * inch, -5 * inch)
c.skew(0, 30)
drawAxes(c, "5. down 5, 3 across, skew beta 30")
c.restoreState()
c.showPage()
#########################################################################
#
# Page 7 - clipping
#
#########################################################################
framePage(c, "Clipping")
c.setFont('Times-Roman', 12)
t = c.beginText(inch, 10 * inch)
t.textLines(
"""This shows clipping at work. We draw a chequerboard of rectangles
into a path object, and clip it. This then forms a mask which limits the region of
the page on which one can draw. This paragraph was drawn after setting the clipping
path, and so you should only see part of the text.""")
c.drawText(t)
c.saveState()
#c.setFillColorRGB(0,0,1)
p = c.beginPath()
#make a chesboard effect, 1 cm squares
for i in range(14):
x0 = (3 + i) * cm
for j in range(7):
y0 = (16 + j) * cm
p.rect(x0, y0, 0.85 * cm, 0.85 * cm)
c.addLiteral('%Begin clip path')
c.clipPath(p)
c.addLiteral('%End clip path')
t = c.beginText(3 * cm, 22.5 * cm)
t.textLines(
"""This shows clipping at work. We draw a chequerboard of rectangles
into a path object, and clip it. This then forms a mask which limits the region of
the page on which one can draw. This paragraph was drawn after setting the clipping
path, and so you should only see part of the text.
This shows clipping at work. We draw a chequerboard of rectangles
into a path object, and clip it. This then forms a mask which limits the region of
the page on which one can draw. This paragraph was drawn after setting the clipping
path, and so you should only see part of the text.
This shows clipping at work. We draw a chequerboard of rectangles
into a path object, and clip it. This then forms a mask which limits the region of
the page on which one can draw. This paragraph was drawn after setting the clipping
path, and so you should only see part of the text.""")
c.drawText(t)
c.restoreState()
t = c.beginText(inch, 5 * inch)
t.textLines(
"""You can also use text as an outline for clipping with the text render mode.
The API is not particularly clean on this and one has to follow the right sequence;
this can be optimized shortly.""")
c.drawText(t)
#first the outline
c.saveState()
t = c.beginText(inch, 3.0 * inch)
t.setFont('Helvetica-BoldOblique', 108)
t.setTextRenderMode(5) #stroke and add to path
t.textLine('Python!')
t.setTextRenderMode(0)
c.drawText(t) #this will make a clipping mask
#now some small stuff which wil be drawn into the current clip mask
t = c.beginText(inch, 4 * inch)
t.setFont('Times-Roman', 6)
t.textLines((('spam ' * 40) + '\n') * 15)
c.drawText(t)
#now reset canvas to get rid of the clipping mask
c.restoreState()
c.showPage()
#########################################################################
#
# Page 8 - images
#
#########################################################################
framePage(c, "Images")
c.setFont('Times-Roman', 12)
t = c.beginText(inch, 10 * inch)
if not haveImages:
c.drawString(
inch, 11 * inch,
"Python or Java Imaging Library not found! Below you see rectangles instead of images."
)
t.textLines(
"""PDFgen uses the Python Imaging Library (or, under Jython, java.awt.image and javax.imageio)
to process a very wide variety of image formats.
This page shows image capabilities. If I've done things right, the bitmap should have
its bottom left corner aligned with the crosshairs.
There are two methods for drawing images. The recommended use is to call drawImage.
This produces the smallest PDFs and the fastest generation times as each image's binary data is
only embedded once in the file. Also you can use advanced features like transparency masks.
You can also use drawInlineImage, which puts images in the page stream directly.
This is slightly faster for Acrobat to render or for very small images, but wastes
space if you use images more than once.""")
c.drawText(t)
if haveImages:
from reportlab.lib.testutils import testsFolder
gif = os.path.join(testsFolder, 'pythonpowered.gif')
c.drawInlineImage(gif, 2 * inch, 7 * inch)
c.drawInlineImage(os.path.join(testsFolder, 'pythonpowered-gs.gif'),
4 * inch, 7.5 * inch)
tif = os.path.join(testsFolder,
'test-cross.tiff') #example of a mode '1' image
c.drawInlineImage(tif, 1 * inch, 1 * inch)
from reportlab.lib.utils import Image as PilImage
if PilImage:
c.drawInlineImage(PilImage.open(tif), 1.25 * inch, 1 * inch)
else:
c.rect(2 * inch, 7 * inch, 110, 44)
c.rect(4 * inch, 7 * inch, 110, 44)
c.line(1.5 * inch, 7 * inch, 4 * inch, 7 * inch)
c.line(2 * inch, 6.5 * inch, 2 * inch, 8 * inch)
c.drawString(4.5 * inch, 7.25 * inch, 'inline image drawn at natural size')
if haveImages:
c.drawInlineImage(gif, 2 * inch, 5 * inch, inch, inch)
else:
c.rect(2 * inch, 5 * inch, inch, inch)
c.line(1.5 * inch, 5 * inch, 4 * inch, 5 * inch)
c.line(2 * inch, 4.5 * inch, 2 * inch, 6 * inch)
c.drawString(4.5 * inch, 5.25 * inch, 'inline image distorted to fit box')
c.drawString(
1.5 * inch, 4 * inch,
'Image XObjects can be defined once in the file and drawn many times.')
c.drawString(1.5 * inch, 3.75 * inch,
'This results in faster generation and much smaller files.')
for i in range(5):
if haveImages:
(w, h) = c.drawImage(gif, (1.5 + i) * inch, 3 * inch)
else:
(w, h) = (144, 10)
c.rect((1.5 + i) * inch, 3 * inch, 110, 44)
myMask = [254, 255, 222, 223, 0, 1]
c.drawString(
1.5 * inch, 2.5 * inch,
"The optional 'mask' parameter lets you define transparent colors. We used a color picker"
)
c.drawString(
1.5 * inch, 2.3 * inch,
"to determine that the yellow in the image above is RGB=(225,223,0). We then define a mask"
)
c.drawString(
1.5 * inch, 2.1 * inch,
"spanning these RGB values: %s. The background vanishes!!" % myMask)
c.drawString(2.5 * inch, 1.2 * inch, 'This would normally be obscured')
if haveImages:
c.drawImage(gif, 1 * inch, 1.2 * inch, w, h, mask=myMask)
c.drawImage(gif, 3 * inch, 1.2 * inch, w, h, mask='auto')
c.drawImage(os.path.join(testsFolder, 'test-rgba.png'),
5 * inch,
1.2 * inch,
width=10,
height=10,
mask='auto')
c.drawImage(os.path.join(testsFolder, 'test-indexed.png'),
5.5 * inch,
1.2 * inch,
width=10,
height=10,
mask='auto')
else:
c.rect(1 * inch, 1.2 * inch, w, h)
c.rect(3 * inch, 1.2 * inch, w, h)
c.showPage()
c.drawString(
1 * inch, 10.25 * inch,
"For rgba type images we can use the alpha channel if we set mask='auto'."
)
c.drawString(1 * inch, 10.25 * inch - 14.4,
"The first image is solid red with variable alpha.")
c.drawString(1 * inch, 10.25 * inch - 2 * 14.4,
"The second image is white alpha=0% to purple=100%")
for i in range(8):
c.drawString(1 * inch, 8 * inch + i * 14.4, "mask=None Line %d" % i)
c.drawString(3 * inch, 8 * inch + i * 14.4, "mask='auto' Line %d" % i)
c.drawString(1 * inch, 6 * inch + i * 14.4, "mask=None Line %d" % i)
c.drawString(3 * inch, 6 * inch + i * 14.4, "mask='auto' Line %d" % i)
w = 100
h = 75
c.rect(1 * inch, 8 + 14.4 * inch, w, h)
c.rect(3 * inch, 8 + 14.4 * inch, w, h)
c.rect(1 * inch, 6 + 14.4 * inch, w, h)
c.rect(3 * inch, 6 + 14.4 * inch, w, h)
if haveImages:
from reportlab.lib.testutils import testsFolder
png = os.path.join(testsFolder, 'solid_red_alpha.png')
c.drawImage(png, 1 * inch, 8 * inch + 14.4, w, h, mask=None)
c.drawImage(png, 3 * inch, 8 * inch + 14.4, w, h, mask='auto')
png = os.path.join(testsFolder, 'alpha_test.png')
c.drawImage(png, 1 * inch, 6 * inch + 14.4, w, h, mask=None)
c.drawImage(png, 3 * inch, 6 * inch + 14.4, w, h, mask='auto')
c.showPage()
if haveImages:
import shutil
c.drawString(1 * inch, 10.25 * inch, 'This jpeg is actually a gif')
jpg = outputfile('_i_am_actually_a_gif.jpg')
shutil.copyfile(gif, jpg)
c.drawImage(jpg, 1 * inch, 9.25 * inch, w, h, mask='auto')
tjpg = os.path.join(os.path.dirname(os.path.dirname(gif)), 'docs',
'images', 'lj8100.jpg')
if os.path.isfile(tjpg):
c.drawString(4 * inch, 10.25 * inch, 'This gif is actually a jpeg')
tgif = outputfile(os.path.basename('_i_am_actually_a_jpeg.gif'))
shutil.copyfile(tjpg, tgif)
c.drawImage(tgif, 4 * inch, 9.25 * inch, w, h, mask='auto')
c.drawString(inch, 9.0 * inch,
'Image positioning tests with preserveAspectRatio')
#preserveAspectRatio test
c.drawString(
inch, 8.8 * inch,
'Both of these should appear within the boxes, vertically centered'
)
x, y, w, h = inch, 6.75 * inch, 2 * inch, 2 * inch
c.rect(x, y, w, h)
(w2, h2) = c.drawImage(
gif, #anchor southwest, drawImage
x,
y,
width=w,
height=h,
preserveAspectRatio=True,
anchor='c')
#now test drawInlineImage across the page
x = 5 * inch
c.rect(x, y, w, h)
(w2, h2) = c.drawInlineImage(
gif, #anchor southwest, drawInlineImage
x,
y,
width=w,
height=h,
preserveAspectRatio=True,
anchor='c')
c.drawString(
inch, 5.75 * inch,
'anchored by respective corners - use both a wide and a tall one as tests'
)
x = 0.25 * inch
for anchor in ['nw', 'n', 'ne', 'w', 'c', 'e', 'sw', 's', 'se']:
x += 0.75 * inch
c.rect(x, 5 * inch, 0.6 * inch, 0.6 * inch)
c.drawImage(gif,
x,
5 * inch,
width=0.6 * inch,
height=0.6 * inch,
preserveAspectRatio=True,
anchor=anchor)
c.drawString(x, 4.9 * inch, anchor)
x = 0.25 * inch
tall_red = os.path.join(testsFolder, 'tall_red.png')
for anchor in ['nw', 'n', 'ne', 'w', 'c', 'e', 'sw', 's', 'se']:
x += 0.75 * inch
c.rect(x, 4 * inch, 0.6 * inch, 0.6 * inch)
c.drawImage(tall_red,
x,
4 * inch,
width=0.6 * inch,
height=0.6 * inch,
preserveAspectRatio=True,
anchor=anchor)
c.drawString(x, 3.9 * inch, anchor)
c.showPage()
#########################################################################
#
# Page 9 - Forms and simple links
#
#########################################################################
framePage(c, "Forms and Links")
c.setFont('Times-Roman', 12)
t = c.beginText(inch, 10 * inch)
t.textLines("""Forms are sequences of text or graphics operations
which are stored only once in a PDF file and used as many times
as desired. The blue logo bar to the left is an example of a form
in this document. See the function framePageForm in this demo script
for an example of how to use canvas.beginForm(name, ...) ... canvas.endForm().
Documents can also contain cross references where (for example) a rectangle
on a page may be bound to a position on another page. If the user clicks
on the rectangle the PDF viewer moves to the bound position on the other
page. There are many other types of annotations and links supported by PDF.
For example, there is a bookmark to each page in this document and below
is a browsable index that jumps to those pages. In addition we show two
URL hyperlinks; for these, you specify a rectangle but must draw the contents
or any surrounding rectangle yourself.
""")
c.drawText(t)
nentries = len(titlelist)
xmargin = 3 * inch
xmax = 7 * inch
ystart = 6.54 * inch
ydelta = 0.4 * inch
for i in range(nentries):
yposition = ystart - i * ydelta
title = titlelist[i]
c.drawString(xmargin, yposition, title)
c.linkAbsolute(title, title,
(xmargin - ydelta / 4, yposition - ydelta / 4, xmax,
yposition + ydelta / 2))
# test URLs
r1 = (inch, 3 * inch, 5 * inch, 3.25 * inch) # this is x1,y1,x2,y2
c.linkURL('http://www.reportlab.com/', r1, thickness=1, color=green)
c.drawString(inch + 3, 3 * inch + 6,
'Hyperlink to www.reportlab.com, with green border')
r1 = (inch, 2.5 * inch, 5 * inch, 2.75 * inch) # this is x1,y1,x2,y2
c.linkURL('mailto:[email protected]', r1) #, border=0)
c.drawString(inch + 3, 2.5 * inch + 6, 'mailto: hyperlink, without border')
r1 = (inch, 2 * inch, 5 * inch, 2.25 * inch) # this is x1,y1,x2,y2
c.linkURL('http://www.reportlab.com/',
r1,
thickness=2,
dashArray=[2, 4],
color=colors.magenta)
c.drawString(inch + 3, 2 * inch + 6, 'Hyperlink with custom border style')
xpdf = fileName2FSEnc(outputfile('test_hello.pdf').replace('\\', '/'))
link = 'Hard link to %s, with red border' % xpdf
r1 = (inch, 1.5 * inch,
inch + 2 * 3 + c.stringWidth(link, c._fontname, c._fontsize),
1.75 * inch) # this is x1,y1,x2,y2
c.linkURL(xpdf, r1, thickness=1, color=red, kind='GoToR')
c.drawString(inch + 3, 1.5 * inch + 6, link)
c.showPage()
############# colour gradients
title = 'Gradients code contributed by Peter Johnson <*****@*****.**>'
c.drawString(1 * inch, 10.8 * inch, title)
c.addOutlineEntry(title + " section", title, level=0, closed=True)
c.bookmarkHorizontalAbsolute(title, 10.8 * inch)
c.saveState()
p = c.beginPath()
p.moveTo(1 * inch, 2 * inch)
p.lineTo(1.5 * inch, 2.5 * inch)
p.curveTo(2 * inch, 3 * inch, 3.0 * inch, 3 * inch, 4 * inch, 2.9 * inch)
p.lineTo(5.5 * inch, 2.1 * inch)
p.close()
c.clipPath(p)
# Draw a linear gradient from (0, 2*inch) to (5*inch, 3*inch), from orange to white.
# The gradient will extend past the endpoints (so you probably want a clip path in place)
c.linearGradient(1 * inch, 2 * inch, 6 * inch, 3 * inch, (red, blue))
c.restoreState()
# Draw a radial gradient with a radius of 3 inches.
# The color starts orange and stays orange until 20% of the radius,
# then fades to white at 80%, and ends up green at 3 inches from the center.
# Since extend is false, the gradient stops drawing at the edge of the circle.
c.radialGradient(4 * inch,
6 * inch,
3 * inch, (red, green, blue), (0.2, 0.8, 1.0),
extend=False)
c.showPage()
### now do stuff for the outline
#for x in outlinenametree: print x
#stop
#c.setOutlineNames0(*outlinenametree)
return c
def makeDocument(filename, pageCallBack=None):
#the extra arg is a hack added later, so other
#tests can get hold of the canvas just before it is
#saved
from reportlab.lib.colors import red, green, blue
global titlelist, closeit
titlelist = []
closeit = 0
c = canvas.Canvas(filename)
c.setPageCompression(0)
c.setPageCallBack(pageCallBack)
framePageForm(c) # define the frame form
c.showOutline()
framePage(c, 'PDFgen graphics API test script')
makesubsection(c, "PDFgen", 10*inch)
#quickie encoding test: when canvas encoding not set,
#the following should do (tm), (r) and (c)
msg_uni = 'copyright\u00A9 trademark\u2122 registered\u00AE scissors\u2702: ReportLab in unicode!'
msg_utf8 = msg_uni.replace('unicode','utf8').encode('utf8')
c.drawString(100, 100, msg_uni)
c.drawString(100, 80, msg_utf8)
t = c.beginText(inch, 10*inch)
t.setFont('Times-Roman', 10)
drawCrossHairs(c, t.getX(),t.getY())
t.textLines("""
The ReportLab library permits you to create PDF documents directly from
your Python code. The "pdfgen" subpackage is the lowest level exposed
to the user and lets you directly position test and graphics on the
page, with access to almost the full range of PDF features.
The API is intended to closely mirror the PDF / Postscript imaging
model. There is an almost one to one correspondence between commands
and PDF operators. However, where PDF provides several ways to do a job,
we have generally only picked one.
The test script attempts to use all of the methods exposed by the Canvas
class, defined in reportlab/pdfgen/canvas.py
First, let's look at text output. There are some basic commands
to draw strings:
- canvas.setFont(fontname, fontsize [, leading])
- canvas.drawString(x, y, text)
- canvas.drawRightString(x, y, text)
- canvas.drawCentredString(x, y, text)
The coordinates are in points starting at the bottom left corner of the
page. When setting a font, the leading (i.e. inter-line spacing)
defaults to 1.2 * fontsize if the fontsize is not provided.
For more sophisticated operations, you can create a Text Object, defined
in reportlab/pdfgen/testobject.py. Text objects produce tighter PDF, run
faster and have many methods for precise control of spacing and position.
Basic usage goes as follows:
- tx = canvas.beginText(x, y)
- tx.textOut('Hello') # this moves the cursor to the right
- tx.textLine('Hello again') # prints a line and moves down
- y = tx.getY() # getX, getY and getCursor track position
- canvas.drawText(tx) # all gets drawn at the end
The green crosshairs below test whether the text cursor is working
properly. They should appear at the bottom left of each relevant
substring.
""")
t.setFillColorRGB(1,0,0)
t.setTextOrigin(inch, 4*inch)
drawCrossHairs(c, t.getX(),t.getY())
t.textOut('textOut moves across:')
drawCrossHairs(c, t.getX(),t.getY())
t.textOut('textOut moves across:')
drawCrossHairs(c, t.getX(),t.getY())
t.textOut('textOut moves across:')
drawCrossHairs(c, t.getX(),t.getY())
t.textLine('')
drawCrossHairs(c, t.getX(),t.getY())
t.textLine('textLine moves down')
drawCrossHairs(c, t.getX(),t.getY())
t.textLine('textLine moves down')
drawCrossHairs(c, t.getX(),t.getY())
t.textLine('textLine moves down')
drawCrossHairs(c, t.getX(),t.getY())
t.setTextOrigin(4*inch,3.25*inch)
drawCrossHairs(c, t.getX(),t.getY())
t.textLines('This is a multi-line\nstring with embedded newlines\ndrawn with textLines().\n')
drawCrossHairs(c, t.getX(),t.getY())
t.textLines(['This is a list of strings',
'drawn with textLines().'])
c.drawText(t)
t = c.beginText(2*inch,2*inch)
t.setFont('Times-Roman',10)
drawCrossHairs(c, t.getX(),t.getY())
t.textOut('Small text.')
drawCrossHairs(c, t.getX(),t.getY())
t.setFont('Courier',14)
t.textOut('Bigger fixed width text.')
drawCrossHairs(c, t.getX(),t.getY())
t.setFont('Times-Roman',10)
t.textOut('Small text again.')
drawCrossHairs(c, t.getX(),t.getY())
c.drawText(t)
#try out the decimal tabs high on the right.
c.setStrokeColor(colors.silver)
c.line(7*inch, 6*inch, 7*inch, 4.5*inch)
c.setFillColor(colors.black)
c.setFont('Times-Roman',10)
c.drawString(6*inch, 6.2*inch, "Testing decimal alignment")
c.drawString(6*inch, 6.05*inch, "- aim for silver line")
c.line(7*inch, 6*inch, 7*inch, 4.5*inch)
c.drawAlignedString(7*inch, 5.8*inch, "1,234,567.89")
c.drawAlignedString(7*inch, 5.6*inch, "3,456.789")
c.drawAlignedString(7*inch, 5.4*inch, "123")
c.setFillColor(colors.red)
c.drawAlignedString(7*inch, 5.2*inch, "(7,192,302.30)")
#mark the cursor where it stopped
c.showPage()
##############################################################
#
# page 2 - line styles
#
###############################################################
#page 2 - lines and styles
framePage(c, 'Line Drawing Styles')
# three line ends, lines drawn the hard way
#firt make some vertical end markers
c.setDash(4,4)
c.setLineWidth(0)
c.line(inch,9.2*inch,inch, 7.8*inch)
c.line(3*inch,9.2*inch,3*inch, 7.8*inch)
c.setDash() #clears it
c.setLineWidth(5)
c.setLineCap(0)
p = c.beginPath()
p.moveTo(inch, 9*inch)
p.lineTo(3*inch, 9*inch)
c.drawPath(p)
c.drawString(4*inch, 9*inch, 'the default - butt caps project half a width')
makesubsection(c, "caps and joins", 8.5*inch)
c.setLineCap(1)
p = c.beginPath()
p.moveTo(inch, 8.5*inch)
p.lineTo(3*inch, 8.5*inch)
c.drawPath(p)
c.drawString(4*inch, 8.5*inch, 'round caps')
c.setLineCap(2)
p = c.beginPath()
p.moveTo(inch, 8*inch)
p.lineTo(3*inch, 8*inch)
c.drawPath(p)
c.drawString(4*inch, 8*inch, 'square caps')
c.setLineCap(0)
# three line joins
c.setLineJoin(0)
p = c.beginPath()
p.moveTo(inch, 7*inch)
p.lineTo(2*inch, 7*inch)
p.lineTo(inch, 6.7*inch)
c.drawPath(p)
c.drawString(4*inch, 6.8*inch, 'Default - mitered join')
c.setLineJoin(1)
p = c.beginPath()
p.moveTo(inch, 6.5*inch)
p.lineTo(2*inch, 6.5*inch)
p.lineTo(inch, 6.2*inch)
c.drawPath(p)
c.drawString(4*inch, 6.3*inch, 'round join')
c.setLineJoin(2)
p = c.beginPath()
p.moveTo(inch, 6*inch)
p.lineTo(2*inch, 6*inch)
p.lineTo(inch, 5.7*inch)
c.drawPath(p)
c.drawString(4*inch, 5.8*inch, 'bevel join')
c.setDash(6,6)
p = c.beginPath()
p.moveTo(inch, 5*inch)
p.lineTo(3*inch, 5*inch)
c.drawPath(p)
c.drawString(4*inch, 5*inch, 'dash 6 points on, 6 off- setDash(6,6) setLineCap(0)')
makesubsection(c, "dash patterns", 5*inch)
c.setLineCap(1)
p = c.beginPath()
p.moveTo(inch, 4.5*inch)
p.lineTo(3*inch, 4.5*inch)
c.drawPath(p)
c.drawString(4*inch, 4.5*inch, 'dash 6 points on, 6 off- setDash(6,6) setLineCap(1)')
c.setLineCap(0)
c.setDash([1,2,3,4,5,6],0)
p = c.beginPath()
p.moveTo(inch, 4.0*inch)
p.lineTo(3*inch, 4.0*inch)
c.drawPath(p)
c.drawString(4*inch, 4*inch, 'dash growing - setDash([1,2,3,4,5,6],0) setLineCap(0)')
c.setLineCap(1)
c.setLineJoin(1)
c.setDash(32,12)
p = c.beginPath()
p.moveTo(inch, 3.0*inch)
p.lineTo(2.5*inch, 3.0*inch)
p.lineTo(inch, 2*inch)
c.drawPath(p)
c.drawString(4*inch, 3*inch, 'dash pattern, join and cap style interacting - ')
c.drawString(4*inch, 3*inch - 12, 'round join & miter results in sausages')
c.textAnnotation('Annotation',Rect=(4*inch, 3*inch-72, inch,inch-12))
c.showPage()
##############################################################
#
# higher level shapes
#
###############################################################
framePage(c, 'Shape Drawing Routines')
t = c.beginText(inch, 10*inch)
t.textLines("""
Rather than making your own paths, you have access to a range of shape routines.
These are built in pdfgen out of lines and bezier curves, but use the most compact
set of operators possible. We can add any new ones that are of general use at no
cost to performance.""")
t.textLine()
#line demo
makesubsection(c, "lines", 9*inch)
c.line(inch, 9*inch, 3*inch, 9*inch)
t.setTextOrigin(4*inch, 9*inch)
t.textLine('canvas.line(x1, y1, x2, y2)')
#bezier demo - show control points
makesubsection(c, "bezier curves", 8.5*inch)
(x1, y1, x2, y2, x3, y3, x4, y4) = (
inch, 7.8*inch,
1.2*inch, 8.8 * inch,
3*inch, 8.8 * inch,
3.5*inch, 8.05 * inch
)
c.bezier(x1, y1, x2, y2, x3, y3, x4, y4)
c.setDash(3,3)
c.line(x1,y1,x2,y2)
c.line(x3,y3,x4,y4)
c.setDash()
t.setTextOrigin(4*inch, 8.3 * inch)
t.textLine('canvas.bezier(x1, y1, x2, y2, x3, y3, x4, y4)')
#rectangle
makesubsection(c, "rectangles", 8*inch)
c.rect(inch, 7 * inch, 2 * inch, 0.75 * inch)
t.setTextOrigin(4*inch, 7.375 * inch)
t.textLine('canvas.rect(x, y, width, height) - x,y is lower left')
c.roundRect(inch,6.25*inch,2*inch,0.6*inch,0.1*inch)
t.setTextOrigin(4*inch, 6.55*inch)
t.textLine('canvas.roundRect(x,y,width,height,radius)')
makesubsection(c, "arcs", 8*inch)
c.arc(inch,5*inch,3*inch,6*inch,0,90)
t.setTextOrigin(4*inch, 5.5*inch)
t.textLine('canvas.arc(x1, y1, x2, y2, startDeg, extentDeg)')
t.textLine('Note that this is an elliptical arc, not just circular!')
#wedge
makesubsection(c, "wedges", 5*inch)
c.wedge(inch, 4.5*inch, 3*inch, 3.5*inch, 0, 315)
t.setTextOrigin(4*inch, 4*inch)
t.textLine('canvas.wedge(x1, y1, x2, y2, startDeg, extentDeg)')
t.textLine('Note that this is an elliptical arc, not just circular!')
#wedge the other way
c.wedge(inch, 3.75*inch, 3*inch, 2.75*inch, 0, -45)
t.setTextOrigin(4*inch, 3*inch)
t.textLine('Use a negative extent to go clockwise')
#circle
makesubsection(c, "circles", 3.5*inch)
c.circle(1.5*inch, 2*inch, 0.5 * inch)
c.circle(3*inch, 2*inch, 0.5 * inch)
t.setTextOrigin(4*inch, 2 * inch)
t.textLine('canvas.circle(x, y, radius)')
c.drawText(t)
c.showPage()
##############################################################
#
# Page 4 - fonts
#
###############################################################
framePage(c, "Font Control")
c.drawString(inch, 10*inch, 'Listing available fonts...')
y = 9.5*inch
for fontname in c.getAvailableFonts():
c.setFont(fontname,24)
c.drawString(inch, y, 'This should be %s' % fontname)
y = y - 28
makesubsection(c, "fonts and colors", 4*inch)
c.setFont('Times-Roman', 12)
t = c.beginText(inch, 4*inch)
t.textLines("""Now we'll look at the color functions and how they interact
with the text. In theory, a word is just a shape; so setFillColorRGB()
determines most of what you see. If you specify other text rendering
modes, an outline color could be defined by setStrokeColorRGB() too""")
c.drawText(t)
t = c.beginText(inch, 2.75 * inch)
t.setFont('Times-Bold',36)
t.setFillColor(green) #green
t.textLine('Green fill, no stroke')
#t.setStrokeColorRGB(1,0,0) #ou can do this in a text object, or the canvas.
t.setStrokeColor(red) #ou can do this in a text object, or the canvas.
t.setTextRenderMode(2) # fill and stroke
t.textLine('Green fill, red stroke - yuk!')
t.setTextRenderMode(0) # back to default - fill only
t.setFillColorRGB(0,0,0) #back to default
t.setStrokeColorRGB(0,0,0) #ditto
c.drawText(t)
c.showPage()
#########################################################################
#
# Page 5 - character spacing
#
#########################################################################
framePage(c, "Character Spacing")
c.drawString(inch, 10*inch, 'Listing available fonts...')
def drawBox(x,y,width,height,color=green,anchor='start'):
if anchor=='end':
x -= width
elif anchor in ('centre','center'):
x = 0.5*width
c.saveState()
c.setDash(2,2)
c.setStrokeColor(color)
c.setLineWidth(0.01)
c.rect(x,y,width,height,fill=0,stroke=1)
c.restoreState()
y = 9.5*inch
x = 72
def drawString(x,y, s,fontName,fontSize,cs=1,anchor='start'):
c.setFont(fontName, fontSize)
y -= 12
w = c.stringWidth(s)
func = c.drawString if anchor=='start' else c.drawRightString if anchor=='end' else c.drawCentredString
func(x, y, s)
drawBox(x,y,w,10,anchor=anchor)
y -= 12
func(x, y, s,charSpace=cs)
n = len(s) - 1
drawBox(x,y,w+n,10,anchor=anchor)
y -= 12
return x,y
x,y = drawString(x,y,u'Hello World','Helvetica',10)
x,y = drawString(x,y,u'M','Helvetica',10)
x,y = drawString(x,y,u'MM','Helvetica',10)
x,y = drawString(x,y,u'M M','Helvetica',10)
x,y = drawString(x,y,u'M M','Helvetica',10)
x = 3*72
y = 9.5*inch
x,y = drawString(x,y,u'Hello World','Helvetica',10,anchor='end')
x,y = drawString(x,y,u'M','Helvetica',10,anchor='end')
x,y = drawString(x,y,u'MM','Helvetica',10,anchor='end')
x,y = drawString(x,y,u'M M','Helvetica',10,anchor='end')
x,y = drawString(x,y,u'M M','Helvetica',10,anchor='end')
c.showPage()
#########################################################################
#
# Page 6 - coord transforms
#
#########################################################################
framePage(c, "Coordinate Transforms")
c.setFont('Times-Roman', 12)
t = c.beginText(inch, 10 * inch)
t.textLines("""This shows coordinate transformations. We draw a set of axes,
moving down the page and transforming space before each one.
You can use saveState() and restoreState() to unroll transformations.
Note that functions which track the text cursor give the cursor position
in the current coordinate system; so if you set up a 6 inch high frame
2 inches down the page to draw text in, and move the origin to its top
left, you should stop writing text after six inches and not eight.""")
c.drawText(t)
drawAxes(c, "0. at origin")
c.addLiteral('%about to translate space')
c.translate(2*inch, 7 * inch)
drawAxes(c, '1. translate near top of page')
c.saveState()
c.translate(1*inch, -2 * inch)
drawAxes(c, '2. down 2 inches, across 1')
c.restoreState()
c.saveState()
c.translate(0, -3 * inch)
c.scale(2, -1)
drawAxes(c, '3. down 3 from top, scale (2, -1)')
c.restoreState()
c.saveState()
c.translate(0, -5 * inch)
c.rotate(-30)
drawAxes(c, "4. down 5, rotate 30' anticlockwise")
c.restoreState()
c.saveState()
c.translate(3 * inch, -5 * inch)
c.skew(0,30)
drawAxes(c, "5. down 5, 3 across, skew beta 30")
c.restoreState()
c.showPage()
#########################################################################
#
# Page 7 - clipping
#
#########################################################################
framePage(c, "Clipping")
c.setFont('Times-Roman', 12)
t = c.beginText(inch, 10 * inch)
t.textLines("""This shows clipping at work. We draw a chequerboard of rectangles
into a path object, and clip it. This then forms a mask which limits the region of
the page on which one can draw. This paragraph was drawn after setting the clipping
path, and so you should only see part of the text.""")
c.drawText(t)
c.saveState()
#c.setFillColorRGB(0,0,1)
p = c.beginPath()
#make a chesboard effect, 1 cm squares
for i in range(14):
x0 = (3 + i) * cm
for j in range(7):
y0 = (16 + j) * cm
p.rect(x0, y0, 0.85*cm, 0.85*cm)
c.addLiteral('%Begin clip path')
c.clipPath(p)
c.addLiteral('%End clip path')
t = c.beginText(3 * cm, 22.5 * cm)
t.textLines("""This shows clipping at work. We draw a chequerboard of rectangles
into a path object, and clip it. This then forms a mask which limits the region of
the page on which one can draw. This paragraph was drawn after setting the clipping
path, and so you should only see part of the text.
This shows clipping at work. We draw a chequerboard of rectangles
into a path object, and clip it. This then forms a mask which limits the region of
the page on which one can draw. This paragraph was drawn after setting the clipping
path, and so you should only see part of the text.
This shows clipping at work. We draw a chequerboard of rectangles
into a path object, and clip it. This then forms a mask which limits the region of
the page on which one can draw. This paragraph was drawn after setting the clipping
path, and so you should only see part of the text.""")
c.drawText(t)
c.restoreState()
t = c.beginText(inch, 5 * inch)
t.textLines("""You can also use text as an outline for clipping with the text render mode.
The API is not particularly clean on this and one has to follow the right sequence;
this can be optimized shortly.""")
c.drawText(t)
#first the outline
c.saveState()
t = c.beginText(inch, 3.0 * inch)
t.setFont('Helvetica-BoldOblique',108)
t.setTextRenderMode(5) #stroke and add to path
t.textLine('Python!')
t.setTextRenderMode(0)
c.drawText(t) #this will make a clipping mask
#now some small stuff which wil be drawn into the current clip mask
t = c.beginText(inch, 4 * inch)
t.setFont('Times-Roman',6)
t.textLines((('spam ' * 40) + '\n') * 15)
c.drawText(t)
#now reset canvas to get rid of the clipping mask
c.restoreState()
c.showPage()
#########################################################################
#
# Page 8 - images
#
#########################################################################
framePage(c, "Images")
c.setFont('Times-Roman', 12)
t = c.beginText(inch, 10 * inch)
if not haveImages:
c.drawString(inch, 11*inch,
"Python or Java Imaging Library not found! Below you see rectangles instead of images.")
t.textLines("""PDFgen uses the Python Imaging Library (or, under Jython, java.awt.image and javax.imageio)
to process a very wide variety of image formats.
This page shows image capabilities. If I've done things right, the bitmap should have
its bottom left corner aligned with the crosshairs.
There are two methods for drawing images. The recommended use is to call drawImage.
This produces the smallest PDFs and the fastest generation times as each image's binary data is
only embedded once in the file. Also you can use advanced features like transparency masks.
You can also use drawInlineImage, which puts images in the page stream directly.
This is slightly faster for Acrobat to render or for very small images, but wastes
space if you use images more than once.""")
c.drawText(t)
if haveImages:
from reportlab.lib.testutils import testsFolder
gif = os.path.join(testsFolder,'pythonpowered.gif')
c.drawInlineImage(gif,2*inch, 7*inch)
c.drawInlineImage(os.path.join(testsFolder,'pythonpowered-gs.gif'),4*inch, 7.5*inch)
tif = os.path.join(testsFolder,'test-cross.tiff') #example of a mode '1' image
c.drawInlineImage(tif,1*inch, 1*inch)
from reportlab.lib.utils import Image as PilImage
if PilImage:
c.drawInlineImage(PilImage.open(tif),1.25*inch, 1*inch)
else:
c.rect(2*inch, 7*inch, 110, 44)
c.rect(4*inch, 7*inch, 110, 44)
c.line(1.5*inch, 7*inch, 4*inch, 7*inch)
c.line(2*inch, 6.5*inch, 2*inch, 8*inch)
c.drawString(4.5 * inch, 7.25*inch, 'inline image drawn at natural size')
if haveImages:
c.drawInlineImage(gif,2*inch, 5*inch, inch, inch)
else:
c.rect(2*inch, 5*inch, inch, inch)
c.line(1.5*inch, 5*inch, 4*inch, 5*inch)
c.line(2*inch, 4.5*inch, 2*inch, 6*inch)
c.drawString(4.5 * inch, 5.25*inch, 'inline image distorted to fit box')
c.drawString(1.5 * inch, 4*inch, 'Image XObjects can be defined once in the file and drawn many times.')
c.drawString(1.5 * inch, 3.75*inch, 'This results in faster generation and much smaller files.')
for i in range(5):
if haveImages:
(w, h) = c.drawImage(gif, (1.5 + i)*inch, 3*inch)
else:
(w, h) = (144, 10)
c.rect((1.5 + i)*inch, 3*inch, 110, 44)
myMask = [254,255,222,223,0,1]
c.drawString(1.5 * inch, 2.5*inch, "The optional 'mask' parameter lets you define transparent colors. We used a color picker")
c.drawString(1.5 * inch, 2.3*inch, "to determine that the yellow in the image above is RGB=(225,223,0). We then define a mask")
c.drawString(1.5 * inch, 2.1*inch, "spanning these RGB values: %s. The background vanishes!!" % myMask)
c.drawString(2.5*inch, 1.2*inch, 'This would normally be obscured')
if haveImages:
c.drawImage(gif, 1*inch, 1.2*inch, w, h, mask=myMask)
c.drawImage(gif, 3*inch, 1.2*inch, w, h, mask='auto')
c.drawImage(os.path.join(testsFolder,'test-rgba.png'),5*inch,1.2*inch,width=10,height=10,mask='auto')
c.drawImage(os.path.join(testsFolder,'test-indexed.png'),5.5*inch,1.2*inch,width=10,height=10,mask='auto')
else:
c.rect(1*inch, 1.2*inch, w, h)
c.rect(3*inch, 1.2*inch, w, h)
c.showPage()
c.drawString(1*inch, 10.25*inch, "For rgba type images we can use the alpha channel if we set mask='auto'.")
c.drawString(1*inch, 10.25*inch-14.4, "The first image is solid red with variable alpha.")
c.drawString(1*inch, 10.25*inch-2*14.4, "The second image is white alpha=0% to purple=100%")
for i in range(8):
c.drawString(1*inch,8*inch+i*14.4,"mask=None Line %d"%i)
c.drawString(3*inch,8*inch+i*14.4,"mask='auto' Line %d"%i)
c.drawString(1*inch,6*inch+i*14.4,"mask=None Line %d"%i)
c.drawString(3*inch,6*inch+i*14.4,"mask='auto' Line %d"%i)
w = 100
h = 75
c.rect(1*inch, 8+14.4*inch, w, h)
c.rect(3*inch, 8+14.4*inch, w, h)
c.rect(1*inch, 6+14.4*inch, w, h)
c.rect(3*inch, 6+14.4*inch, w, h)
if haveImages:
from reportlab.lib.testutils import testsFolder
png = os.path.join(testsFolder,'solid_red_alpha.png')
c.drawImage(png, 1*inch, 8*inch+14.4, w, h, mask=None)
c.drawImage(png, 3*inch, 8*inch+14.4, w, h, mask='auto')
png = os.path.join(testsFolder,'alpha_test.png')
c.drawImage(png, 1*inch, 6*inch+14.4, w, h, mask=None)
c.drawImage(png, 3*inch, 6*inch+14.4, w, h, mask='auto')
c.showPage()
if haveImages:
import shutil
c.drawString(1*inch, 10.25*inch, 'This jpeg is actually a gif')
jpg = outputfile('_i_am_actually_a_gif.jpg')
shutil.copyfile(gif,jpg)
c.drawImage(jpg, 1*inch, 9.25*inch, w, h, mask='auto')
tjpg = os.path.join(os.path.dirname(os.path.dirname(gif)),'docs','images','lj8100.jpg')
if os.path.isfile(tjpg):
c.drawString(4*inch, 10.25*inch, 'This gif is actually a jpeg')
tgif = outputfile(os.path.basename('_i_am_actually_a_jpeg.gif'))
shutil.copyfile(tjpg,tgif)
c.drawImage(tgif, 4*inch, 9.25*inch, w, h, mask='auto')
c.drawString(inch, 9.0*inch, 'Image positioning tests with preserveAspectRatio')
#preserveAspectRatio test
c.drawString(inch, 8.8*inch, 'Both of these should appear within the boxes, vertically centered')
x, y, w, h = inch, 6.75* inch, 2*inch, 2*inch
c.rect(x, y, w, h)
(w2, h2) = c.drawImage(gif, #anchor southwest, drawImage
x, y, width=w, height=h,
preserveAspectRatio=True,
anchor='c'
)
#now test drawInlineImage across the page
x = 5 * inch
c.rect(x, y, w, h)
(w2, h2) = c.drawInlineImage(gif, #anchor southwest, drawInlineImage
x, y, width=w, height=h,
preserveAspectRatio=True,
anchor='c'
)
c.drawString(inch, 5.75*inch,
'anchored by respective corners - use both a wide and a tall one as tests')
x = 0.25 * inch
for anchor in ['nw','n','ne','w','c','e','sw','s','se']:
x += 0.75*inch
c.rect(x, 5*inch, 0.6*inch, 0.6*inch)
c.drawImage(
gif, x, 5*inch,
width=0.6*inch, height=0.6*inch,
preserveAspectRatio=True,
anchor=anchor
)
c.drawString(x, 4.9*inch, anchor)
x = 0.25 * inch
tall_red = os.path.join(testsFolder,'tall_red.png')
for anchor in ['nw','n','ne','w','c','e','sw','s','se']:
x += 0.75*inch
c.rect(x, 4*inch, 0.6*inch, 0.6*inch)
c.drawImage(
tall_red, x, 4*inch,
width=0.6*inch, height=0.6*inch,
preserveAspectRatio=True,
anchor=anchor
)
c.drawString(x, 3.9*inch, anchor)
c.showPage()
#########################################################################
#
# Page 9 - Forms and simple links
#
#########################################################################
framePage(c, "Forms and Links")
c.setFont('Times-Roman', 12)
t = c.beginText(inch, 10 * inch)
t.textLines("""Forms are sequences of text or graphics operations
which are stored only once in a PDF file and used as many times
as desired. The blue logo bar to the left is an example of a form
in this document. See the function framePageForm in this demo script
for an example of how to use canvas.beginForm(name, ...) ... canvas.endForm().
Documents can also contain cross references where (for example) a rectangle
on a page may be bound to a position on another page. If the user clicks
on the rectangle the PDF viewer moves to the bound position on the other
page. There are many other types of annotations and links supported by PDF.
For example, there is a bookmark to each page in this document and below
is a browsable index that jumps to those pages. In addition we show two
URL hyperlinks; for these, you specify a rectangle but must draw the contents
or any surrounding rectangle yourself.
""")
c.drawText(t)
nentries = len(titlelist)
xmargin = 3*inch
xmax = 7*inch
ystart = 6.54*inch
ydelta = 0.4*inch
for i in range(nentries):
yposition = ystart - i*ydelta
title = titlelist[i]
c.drawString(xmargin, yposition, title)
c.linkAbsolute(title, title, (xmargin-ydelta/4, yposition-ydelta/4, xmax, yposition+ydelta/2))
# test URLs
r1 = (inch, 3*inch, 5*inch, 3.25*inch) # this is x1,y1,x2,y2
c.linkURL('http://www.reportlab.com/', r1, thickness=1, color=green)
c.drawString(inch+3, 3*inch+6, 'Hyperlink to www.reportlab.com, with green border')
r1 = (inch, 2.5*inch, 5*inch, 2.75*inch) # this is x1,y1,x2,y2
c.linkURL('mailto:[email protected]', r1) #, border=0)
c.drawString(inch+3, 2.5*inch+6, 'mailto: hyperlink, without border')
r1 = (inch, 2*inch, 5*inch, 2.25*inch) # this is x1,y1,x2,y2
c.linkURL('http://www.reportlab.com/', r1,
thickness=2,
dashArray=[2,4],
color=colors.magenta)
c.drawString(inch+3, 2*inch+6, 'Hyperlink with custom border style')
xpdf = fileName2FSEnc(outputfile('test_hello.pdf').replace('\\','/'))
link = 'Hard link to %s, with red border' % xpdf
r1 = (inch, 1.5*inch, inch+2*3+c.stringWidth(link,c._fontname, c._fontsize), 1.75*inch) # this is x1,y1,x2,y2
c.linkURL(xpdf, r1, thickness=1, color=red, kind='GoToR')
c.drawString(inch+3, 1.5*inch+6, link )
c.showPage()
############# colour gradients
title = 'Gradients code contributed by Peter Johnson <*****@*****.**>'
c.drawString(1*inch,10.8*inch,title)
c.addOutlineEntry(title+" section", title, level=0, closed=True)
c.bookmarkHorizontalAbsolute(title, 10.8*inch)
c.saveState()
p = c.beginPath()
p.moveTo(1*inch,2*inch)
p.lineTo(1.5*inch,2.5*inch)
p.curveTo(2*inch,3*inch,3.0*inch,3*inch,4*inch,2.9*inch)
p.lineTo(5.5*inch,2.1*inch)
p.close()
c.clipPath(p)
# Draw a linear gradient from (0, 2*inch) to (5*inch, 3*inch), from orange to white.
# The gradient will extend past the endpoints (so you probably want a clip path in place)
c.linearGradient(1*inch, 2*inch, 6*inch, 3*inch, (red, blue))
c.restoreState()
# Draw a radial gradient with a radius of 3 inches.
# The color starts orange and stays orange until 20% of the radius,
# then fades to white at 80%, and ends up green at 3 inches from the center.
# Since extend is false, the gradient stops drawing at the edge of the circle.
c.radialGradient(4*inch, 6*inch, 3*inch, (red, green, blue), (0.2, 0.8, 1.0), extend=False)
c.showPage()
### now do stuff for the outline
#for x in outlinenametree: print x
#stop
#c.setOutlineNames0(*outlinenametree)
return c