def create_bookmarks(bookmarks, pages, parent=None):
count = len(bookmarks)
bookmark_objects = []
for label, target, children in bookmarks:
destination = (pages[target[0]].indirect, PdfName('XYZ'), target[1],
target[2], 0)
bookmark_object = PdfDict(Title=PdfString.encode(label),
A=PdfDict(Type=PdfName('Action'),
S=PdfName('GoTo'),
D=PdfArray(destination)))
bookmark_object.indirect = True
children_objects, children_count = create_bookmarks(
children, pages, parent=bookmark_object)
bookmark_object.Count = 1 + children_count
if bookmark_objects:
bookmark_object.Prev = bookmark_objects[-1]
bookmark_objects[-1].Next = bookmark_object
if children_objects:
bookmark_object.First = children_objects[0]
bookmark_object.Last = children_objects[-1]
if parent is not None:
bookmark_object.Parent = parent
count += children_count
bookmark_objects.append(bookmark_object)
return bookmark_objects, count
def get_png_smask(image):
width, height = image.size
smask = Image.make_compressed_image_content(image.getchannel('A'))
smask_xobj = PdfDict(
stream=smask,
Width=width,
Height=height,
BitsPerComponent=8,
Filter=PdfName('FlateDecode'),
ColorSpace=PdfName('DeviceGray'),
Subtype=PdfName('Image'),
Type=PdfName('XObject'),
)
smask_xobj.indirect = True
return smask_xobj
def create_highlight(points,
color=(1, 0.92, 0.23),
author=None,
contents=None):
"""Given Quad points, create a highligh object in standard pdf format."""
new_highlight = PdfDict()
new_highlight.F = 4
new_highlight.Type = PdfName('Annot')
new_highlight.Subtype = PdfName('Highlight')
if author:
new_highlight.T = author
new_highlight.C = color
if contents:
new_highlight.Contents = contents
new_highlight.indirect = True
#############################################################
### Search for bounding coordinates
#############################################################
bot_left_x = float('inf')
bot_left_y = float('inf')
top_right_x = 0.0
top_right_y = 0.0
quad_pts = []
for (x1, y1, x2, y2) in points:
# this quadpoints specified PDF definition of rect box
quad_pts.extend([x1, y2, x2, y2, x1, y1, x2, y1])
bot_left_x = min(bot_left_x, x1, x2)
bot_left_y = min(bot_left_y, y1, y2)
top_right_x = max(top_right_x, x1, x2)
top_right_y = max(top_right_y, y1, y2)
new_highlight.QuadPoints = PdfArray(quad_pts)
new_highlight.Rect = PdfArray(
[bot_left_x, bot_left_y, top_right_x, top_right_y])
return new_highlight
def apply_annotations(rmpage, page_annot, ocgorderinner):
for k, layer_a in enumerate(page_annot):
layerannots = layer_a[1]
for a in layerannots:
# PDF origin is in bottom-left, so invert all
# y-coordinates.
author = 'RCU' #self.model.device_info['rcuname']
pdf_a = PdfDict(Type=PdfName('Annot'),
Rect=PdfArray([(a[1] * PTPERPX),
PDFHEIGHT - (a[2] * PTPERPX),
(a[3] * PTPERPX),
PDFHEIGHT - (a[4] * PTPERPX)]),
T=author,
ANN='pdfmark',
Subtype=PdfName(a[0]),
P=rmpage)
# Set to indirect because it makes a cleaner PDF
# output.
pdf_a.indirect = True
if ocgorderinner:
pdf_a.OC = ocgorderinner[k]
if not '/Annots' in rmpage:
rmpage.Annots = PdfArray()
rmpage.Annots.append(pdf_a)
pdf_kid.Contents = img_kid.Contents[0]
pdf_kid.Contents.stream = pdf_kid.Contents.stream[:
105] # unnecessary clean-up: getting rid of traces of Image-7370
pdf_kid.MediaBox = img_kid.MediaBox
alt_img = PdfDict(Type=PdfName.XObject,
SubType=PdfName.Image,
BitsPerComponent=8,
ColorSpace=PdfName.DeviceRGB,
Height=800,
Width=600,
Length=0,
F=PdfDict(FS=PdfName.URL,
F='https://chezsoi.org/lucas/ThePatch.jpg'),
FFilter=PdfName.DCTDecode)
alt_img.indirect = true
alternates = PdfArray([PdfDict(DefaultForPrinting=True, Image=alt_img)])
alternates.indirect = true
img_name = PdfName('Image-9960')
img = img_kid.Resources.XObject[img_name]
img.Alternates = alternates
pdf_kid.Resources.XObject = PdfDict()
pdf_kid.Resources.XObject[img_name] = img
out = PdfWriter()
out.addpage(pdf.pages[0])
out.write('out.pdf')
# CONCLUSION: neither Adobe nor Sumatra readers visit the link...
