Python Canvas.setKeywords方法代码示例

# 需要导入模块: from reportlab.pdfgen.canvas import Canvas [as 别名]
# 或者: from reportlab.pdfgen.canvas.Canvas import setKeywords [as 别名]
def generate_pages(card_sizes,cards, filename="placecards.pdf", custom_font = None):
    pagesize = pagesizes.portrait( ( 8.5 * pagesizes.inch, 11 * pagesizes.inch))
    pdf = Canvas(filename, pagesize=pagesize,pdfVersion=(1,4))
    pdf.setAuthor('placecardboardgenerate.py')
    pdf.setSubject('wedding placecards')
    pdf.setTitle('Placecards for Wedding Reception')
    pdf.setKeywords(('wedding', 'placecards'))
    if custom_font is not None:
        pdf.setFont(custom_font,14)#FIXME don't hardcode font size
            
    adjusted_card_sizes = (card_sizes[0] * pagesizes.inch, card_sizes[1] * pagesizes.inch)
    card_printer = CardPrinter(pagesize,adjusted_card_sizes)

    (cardsPerRow,rowsPerPage) = (card_printer.cards_per_row, card_printer.cards_per_column)

    (page_width, page_height) = pagesize

    groupedCards = group_cards(cards, cardsPerRow, rowsPerPage)
    for (page_index,pageOfCards) in enumerate(groupedCards):
        if custom_font is not None:
            pdf.setFont(custom_font,14)#FIXME don't hardcode font size
        for (row_index,rowOfCards) in enumerate(pageOfCards):
            for (column_index,card) in enumerate(rowOfCards):
                card_printer.print_on_front_page(pdf,card,row_index, column_index)
        pdf.drawCentredString(page_width/2.0,20,"front of page %i" % (page_index + 1))
        pdf.showPage()
        if custom_font is not None:
            pdf.setFont(custom_font,14)#FIXME don't hardcode font size
        for (row_index,rowOfCards) in enumerate(pageOfCards):
            for (column_index,card) in enumerate(rowOfCards):
                card_printer.print_on_back_page(pdf,card,row_index, column_index)                
        pdf.drawCentredString(page_width/2.0,20,"back of page %i" % (page_index + 1))
        pdf.showPage()

    pdf.save()

# 需要导入模块: from reportlab.pdfgen.canvas import Canvas [as 别名]
# 或者: from reportlab.pdfgen.canvas.Canvas import setKeywords [as 别名]
 def _save_pdf(self):
     """
     Output the current document to a PDF file using ReportLab.
     """
     save_model = self.application.get_save_model()
     save_view = self.application.get_save_view()
     document_model = self.application.get_document_model()
     
     # TODO: seperate saving code into its own thread?
     
     # Setup output pdf
     pdf = PdfCanvas(save_model.filename)
     pdf.setTitle(save_model.title)
     pdf.setAuthor(save_model.author)
     pdf.setKeywords(save_model.keywords)
         
     # Generate pages
     page_iter = document_model.get_iter_first()
     while page_iter:
         current_page = document_model.get_value(page_iter, 0)
         
         # Write transformed image
         temp_file_path = ''.join([tempfile.mktemp(), '.bmp'])
         current_page.pil_image.save(temp_file_path)
     
         assert os.path.exists(temp_file_path), \
             'Temporary bitmap file was not created by PIL.'
         
         size = constants.PAGESIZES_INCHES[current_page.page_size]
         pdf_width = size[0] * points_per_inch 
         pdf_height = size[1] * points_per_inch
         
         # Swizzle width and height if the page has been rotated on its side
         if abs(current_page.rotation) % 180 == 90:
             pdf_width, pdf_height = pdf_height, pdf_width
             
         pdf.setPageSize((pdf_width, pdf_height))
         pdf.drawImage(
             temp_file_path, 
             0, 0, width=pdf_width, height=pdf_height, 
             preserveAspectRatio=True)
         pdf.showPage()
         
         os.remove(temp_file_path)
         
         page_iter = document_model.iter_next(page_iter)
         
     # Save complete PDF
     pdf.save()
         
     assert os.path.exists(save_model.filename), \
         'Final PDF file was not created by ReportLab.'
         
     document_model.clear()

# 需要导入模块: from reportlab.pdfgen.canvas import Canvas [as 别名]
# 或者: from reportlab.pdfgen.canvas.Canvas import setKeywords [as 别名]
    def generateCollage(self,session):
        file_name =  'collage.pdf' #TODO image should be created in a temp directory
        pdf = Canvas(file_name,pagesize=self._pagesize)
        # add metadata
        pdf.setAuthor('photobooth') #TODO add app version to author
        pdf.setSubject('wedding photos')
        pdf.setTitle('pictures for session %s' % session.get_name())
        pdf.setKeywords(('wedding', 'pictures','photobooth'))

        # add pictures
        #TODO add padding
        (total_width, total_height) = self._pagesize
        (image_width, image_height) = (total_width, total_height / len(session.get_photos()))        
        for (i,photo) in enumerate(session.get_photos()):
            pdf.drawInlineImage(photo,0,i * image_height, image_width, image_height, preserveAspectRatio=True, anchor='n')
        
        pdf.showPage()
        pdf.save()
        return file_name

# 需要导入模块: from reportlab.pdfgen.canvas import Canvas [as 别名]
# 或者: from reportlab.pdfgen.canvas.Canvas import setKeywords [as 别名]
def start_pdf(filename, author=None, keywords=None, subject=None, title=None):
    """ Starts a new pdf document
    @param filename the name of the PDF generated in output.
    @param author the author name.
    @param subject the subject of the document.
    @param title the title of the document.
    """
    canvas = Canvas(filename)

    if author:
        canvas.setAuthor(author)
    if keywords:
        canvas.setKeywords(keywords)
    if title:
        canvas.setTitle(title)
    if subject:
        canvas.setSubject(subject)
    canvas.setPageCompression(1)
    return canvas

# 需要导入模块: from reportlab.pdfgen.canvas import Canvas [as 别名]
# 或者: from reportlab.pdfgen.canvas.Canvas import setKeywords [as 别名]
def generate_key(verticalCardsCount,horizontalCardsCount,cards, filename="key.pdf", page_margins = 4 * (0.5 * pagesizes.inch, )):
    (page_margin_top, page_margin_left, page_margin_bottom, page_margin_right) = page_margins
    padding = 0.0625 * pagesizes.inch

    spaces = (verticalCardsCount * horizontalCardsCount) * [None,]
    for card in cards:
        spaces[card.position] = card

    pagesize = pagesizes.landscape( ( 8.5 * pagesizes.inch, 11 * pagesizes.inch))
    pdf = Canvas(filename, pagesize=pagesize, pdfVersion=(1,4))
    pdf.setAuthor('placecardboardgenerate.py')
    pdf.setSubject('wedding placecards key')
    pdf.setTitle('Key for Placecards for Wedding Reception')
    pdf.setKeywords(('wedding', 'placecards'))

    (page_width, page_height) = pagesize

    pdf.drawCentredString(page_width/2.0,20,"key of place cards")

    thumbnail_width = ((page_width - page_margin_left - page_margin_right) - (padding * (horizontalCardsCount - 1))) / horizontalCardsCount
    thumbnail_height = ((page_height - page_margin_top - page_margin_bottom) - (padding * (verticalCardsCount - 1))) / verticalCardsCount


    x_margin = page_margin_left
    x_offset = thumbnail_width + padding
    y_margin = page_margin_top
    y_offset = thumbnail_height + padding


    for row_index in range(verticalCardsCount):
        for column_index in range(horizontalCardsCount):
            position = (row_index * horizontalCardsCount) +  column_index
            card = spaces[position]
            (card_x, card_y) = \
                 (x_margin + (x_offset * column_index),\
                  (page_height - thumbnail_height) - (y_margin + (y_offset * row_index)))
            
            if card is not None:
                pdf.drawImage(card.image, card_x, card_y, width = thumbnail_width, height = thumbnail_height)
                pdf.drawCentredString(card_x + thumbnail_width/2.0,card_y + thumbnail_height/2.0, str(card.position))
    
    pdf.showPage()
    pdf.save()

# 需要导入模块: from reportlab.pdfgen.canvas import Canvas [as 别名]
# 或者: from reportlab.pdfgen.canvas.Canvas import setKeywords [as 别名]
class PDFCreator(object):
    appName = "txt2pdf (version 1.0)"

    def __init__(self, args, margins):
        pageWidth, pageHeight = reportlab.lib.pagesizes.__dict__[args.media]
        if args.landscape:
            pageWidth, pageHeight = reportlab.lib.pagesizes.landscape(
                (pageWidth, pageHeight))
        self.author = args.author
        self.title = args.title
        self.keywords = args.keywords
        self.subject = args.subject
        self.canvas = Canvas(args.output, pagesize=(pageWidth, pageHeight))
        self.canvas.setCreator(self.appName)
        if len(args.author) > 0:
            self.canvas.setAuthor(args.author)
        if len(args.title) > 0:
            self.canvas.setTitle(args.title)
        if len(args.subject) > 0:
            self.canvas.setSubject(args.subject)
        if len(args.keywords) > 0:
            self.canvas.setKeywords(args.keywords)
        self.fontSize = args.font_size
        if args.font not in ('Courier'):
            self.font = 'myFont'
            pdfmetrics.registerFont(TTFont('myFont', args.font))
        else:
            self.font = args.font
        self.kerning = args.kerning
        self.margins = margins
        self.leading = (args.extra_vertical_space + 1.2) * self.fontSize
        self.linesPerPage = int(
            (self.leading + pageHeight
             - margins.top - margins.bottom - self.fontSize) / self.leading)
        self.lppLen = len(str(self.linesPerPage))
        fontWidth = self.canvas.stringWidth(
            ".", fontName=self.font, fontSize=self.fontSize)
        self.lineNumbering = args.line_numbers
        if self.lineNumbering:
            margins.adjustLeft(fontWidth * (self.lppLen + 2))
        contentWidth = pageWidth - margins.left - margins.right
        self.charsPerLine = int(
            (contentWidth + self.kerning) / (fontWidth + self.kerning))
        self.top = pageHeight - margins.top - self.fontSize
        self.filename = args.filename
        self.verbose = not args.quiet
        self.breakOnBlanks = args.break_on_blanks
        self.encoding = args.encoding
        self.pageNumbering = args.page_numbers
        if self.pageNumbering:
            self.pageNumberPlacement = \
               (pageWidth / 2, margins.bottom / 2)

    def _process(self, data):
        flen = os.fstat(data.fileno()).st_size
        lineno = 0
        read = 0
        for line in data:
            lineno += 1
            if sys.version_info.major == 2:
                read += len(line)
                yield flen == \
                    read, lineno, line.decode(self.encoding).rstrip('\r\n')
            else:
                read += len(line.encode(self.encoding))
                yield flen == read, lineno, line.rstrip('\r\n')

    def _readDocument(self):
        with open(self.filename, 'r') as data:
            for done, lineno, line in self._process(data):
                if len(line) > self.charsPerLine:
                    self._scribble(
                        "Warning: wrapping line %d in %s" %
                        (lineno + 1, self.filename))
                    while len(line) > self.charsPerLine:
                        yield done, line[:self.charsPerLine]
                        line = line[self.charsPerLine:]
                yield done, line

    def _newpage(self):
        textobject = self.canvas.beginText()
        textobject.setFont(self.font, self.fontSize, leading=self.leading)
        textobject.setTextOrigin(self.margins.left, self.top)
        textobject.setCharSpace(self.kerning)
        if self.pageNumbering:
            self.canvas.drawString(
                self.pageNumberPlacement[0],
                self.pageNumberPlacement[1],
                str(self.canvas.getPageNumber()))
        return textobject

    def _scribble(self, text):
        if self.verbose:
            sys.stderr.write(text + os.linesep)

    def generate(self):
        self._scribble(
            "Writing '%s' with %d characters per "
            "line and %d lines per page..." %
            (self.filename, self.charsPerLine, self.linesPerPage)
#.........这里部分代码省略.........

# 需要导入模块: from reportlab.pdfgen.canvas import Canvas [as 别名]
# 或者: from reportlab.pdfgen.canvas.Canvas import setKeywords [as 别名]

#.........这里部分代码省略.........
        if not self.multiple_canvas or not pyPdf or not self.temp_files:
            return

        readers = []
        def append_pdf(input, output):
            for page_num in range(input.numPages):
                output.addPage(input.getPage(page_num))

        output = pyPdf.PdfFileWriter()
        for f_name in self.temp_files:
            reader = pyPdf.PdfFileReader(file(f_name, 'rb'))
            readers.append(reader)

            append_pdf(reader, output)

        if isinstance(self.filename, basestring):
            fp = file(self.filename, 'wb')
        else:
            fp = self.filename
        
        output.write(fp)

        # Closes and clear objects
        fp.close()
        for r in readers: del r
        del output

    def start_pdf(self):
        """Initializes the PDF document with some properties and methods"""
        # Set PDF properties
        self.canvas.setTitle(self.report.title)
        self.canvas.setAuthor(self.report.author)
        self.canvas.setSubject(self.report.subject)
        self.canvas.setKeywords(self.report.keywords)

    def render_page_header(self):
        """Generate the report page header band if it exists"""
        if not self.report.band_page_header:
            return

        # Doesn't generate this band if it is not visible
        if not self.report.band_page_header.visible:
            return

        # Call method that print the band area and its widgets
        self.render_band(
                self.report.band_page_header,
                top_position=self.calculate_size(self.report.page_size[1]) - self.calculate_size(self.report.margin_top),
                update_top=False,
                )

    def render_page_footer(self):
        """Generate the report page footer band if it exists"""
        if not self.report.band_page_footer:
            return

        # Doesn't generate this band if it is not visible
        if not self.report.band_page_footer.visible:
            return

        # Call method that print the band area and its widgets
        self.render_band(
                self.report.band_page_footer,
                top_position=self.calculate_size(self.report.margin_bottom) +\
                    self.calculate_size(self.report.band_page_footer.height),
                update_top=False,

# 需要导入模块: from reportlab.pdfgen.canvas import Canvas [as 别名]
# 或者: from reportlab.pdfgen.canvas.Canvas import setKeywords [as 别名]
class PDFGenerator(ReportGenerator):
    """This is a generator to output a PDF using ReportLab library with
    preference by its Platypus API"""
    filename = None
    canvas = None
    return_canvas = False

    def __init__(self, report, filename=None, canvas=None, return_canvas=False):
        super(PDFGenerator, self).__init__(report)

        self.filename = filename
        self.canvas = canvas
        self.return_canvas = return_canvas

    def execute(self):
        """Generates a PDF file using ReportLab pdfgen package."""
        super(PDFGenerator, self).execute()

        # Initializes the temporary PDF canvas (just to be used as reference)
        if not self.canvas:
            self.canvas = Canvas(self.filename, pagesize=self.report.page_size)

        # Render pages
        self.render_bands()

        # Initializes the definitive PDF canvas
        self.start_pdf()

        self.generate_pages()

        # Returns the canvas
        if self.return_canvas:
            return self.canvas

        # Saves the canvas - only if it didn't return it
        self.canvas.save()

    def start_pdf(self, filename=None): # XXX
        """Initializes the PDF document with some properties and methods"""
        # Sets the PDF canvas
        #self.canvas = Canvas(filename=filename, pagesize=self.report.page_size) # XXX

        # Set PDF properties
        self.canvas.setTitle(self.report.title)
        self.canvas.setAuthor(self.report.author)
        self.canvas.setSubject(self.report.subject)
        self.canvas.setKeywords(self.report.keywords)

    def render_page_header(self):
        """Generate the report page header band if it exists"""
        if not self.report.band_page_header:
            return

        # Doesn't generate this band if it is not visible
        if not self.report.band_page_header.visible:
            return

        # Call method that print the band area and its widgets
        self.render_band(
                self.report.band_page_header,
                top_position=self.calculate_size(self.report.page_size[1]) - self.calculate_size(self.report.margin_top),
                update_top=False,
                )

    def render_page_footer(self):
        """Generate the report page footer band if it exists"""
        if not self.report.band_page_footer:
            return

        # Doesn't generate this band if it is not visible
        if not self.report.band_page_footer.visible:
            return

        # Call method that print the band area and its widgets
        self.render_band(
                self.report.band_page_footer,
                top_position=self.calculate_size(self.report.margin_bottom) +\
                    self.calculate_size(self.report.band_page_footer.height),
                update_top=False,
                )

    def calculate_top(self, *args):
        ret = args[0]

        for i in args[1:]:
            ret -= i

        return ret

    def get_top_pos(self):
        """Since the coordinates are bottom-left on PDF, we have to use this to get
        the current top position, considering also the top margin."""
        ret = self.calculate_size(self.report.page_size[1]) - self.calculate_size(self.report.margin_top) - self._current_top_position

        if self.report.band_page_header:
            ret -= self.calculate_size(self.report.band_page_header.height)

        return ret

    def make_paragraph(self, text, style=None): # XXX
#.........这里部分代码省略.........

# 需要导入模块: from reportlab.pdfgen.canvas import Canvas [as 别名]
# 或者: from reportlab.pdfgen.canvas.Canvas import setKeywords [as 别名]
def create_pdf(hocr, filename, font="Courier", author=None, keywords=None, subject=None, title=None, image_path=None, draft=False):
    """ transform hOCR information into a searchable PDF.
    @param hocr the hocr structure as coming from extract_hocr.
    @param filename the name of the PDF generated in output.
    @param font the default font (e.g. Courier, Times-Roman).
    @param author the author name.
    @param subject the subject of the document.
    @param title the title of the document.
    @param image_path the default path where images are stored. If not specified
           relative image paths will be resolved to the current directory.
    @param draft whether to enable debug information in the output.

    """
    def adjust_image_size(width, height):
        return max(width / A4[0], height / A4[1])

    canvas = Canvas(filename)

    if author:
        canvas.setAuthor(author)

    if keywords:
        canvas.setKeywords(keywords)

    if title:
        canvas.setTitle(title)

    if subject:
        canvas.setSubject(subject)

    for bbox, image, lines in hocr:
        if not image.startswith('/') and image_path:
            image = os.path.abspath(os.path.join(image_path, image))
        img_width, img_height = bbox[2:]
        ratio = adjust_image_size(img_width, img_height)
        if draft:
            canvas.drawImage(image, 0, A4[1] - img_height / ratio , img_width / ratio, img_height / ratio)
        canvas.setFont(font, 12)
        for bbox, line in lines:
            if draft:
                canvas.setFillColor(red)
            x0, y0, x1, y1 = bbox
            width = (x1 - x0) / ratio
            height = ((y1 - y0) / ratio)
            x0 = x0 / ratio
            #for ch in 'gjpqy,(){}[];[email protected]':
                #if ch in line:
                    #y0 = A4[1] - (y0 / ratio) - height
                    #break
            #else:
            y0 = A4[1] - (y0 / ratio) - height / 1.3
            #canvas.setFontSize(height * 1.5)
            canvas.setFontSize(height)
            text_width = canvas.stringWidth(line)
            if text_width:
                ## If text_width != 0
                text_object = canvas.beginText(x0, y0)
                text_object.setHorizScale(1.0 * width / text_width * 100)
                text_object.textOut(line)
                canvas.drawText(text_object)
            else:
                info('%s, %s has width 0' % (bbox, line))
            if draft:
                canvas.setStrokeColor(green)
                canvas.rect(x0, y0, width, height)
        if draft:
            canvas.circle(0, 0, 10, fill=1)
            canvas.circle(0, A4[1], 10, fill=1)
            canvas.circle(A4[0], 0, 10, fill=1)
            canvas.circle(A4[0], A4[1], 10, fill=1)
            canvas.setFillColor(green)
            canvas.setStrokeColor(green)
            canvas.circle(0, A4[1] - img_height / ratio, 5, fill=1)
            canvas.circle(img_width / ratio, img_height /ratio, 5, fill=1)
        else:
            canvas.drawImage(image, 0, A4[1] - img_height / ratio , img_width / ratio, img_height / ratio)

        canvas.save()