Class: Pdfcrowd::ImageToImageClient

Inherits:
Object
  • Object
show all
Defined in:
lib/pdfcrowd.rb

Overview

Conversion from one image format to another image format.

Instance Method Summary collapse

Constructor Details

#initialize(user_name, api_key) ⇒ ImageToImageClient

Constructor for the Pdfcrowd API client.

  • user_name - Your username at Pdfcrowd.

  • api_key - Your API key.



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# File 'lib/pdfcrowd.rb', line 3200

def initialize(user_name, api_key)
    @helper = ConnectionHelper.new(user_name, api_key)
    @fields = {
        'input_format'=>'image',
        'output_format'=>'png'
    }
    @file_id = 1
    @files = {}
    @raw_data = {}
end

Instance Method Details

#convertFile(file) ⇒ Object

Convert a local file.

  • file - The path to a local file to convert. The file must exist and not be empty.

  • Returns - Byte array containing the conversion output.



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# File 'lib/pdfcrowd.rb', line 3261

def convertFile(file)
    if (!(File.file?(file) && !File.zero?(file)))
        raise Error.new(Pdfcrowd.create_invalid_value_message(file, "convertFile", "image-to-image", "The file must exist and not be empty.", "convert_file"), 470);
    end
    
    @files['file'] = file
    @helper.post(@fields, @files, @raw_data)
end

#convertFileToFile(file, file_path) ⇒ Object

Convert a local file and write the result to a local file.

  • file - The path to a local file to convert. The file must exist and not be empty.

  • file_path - The output file path. The string must not be empty.



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# File 'lib/pdfcrowd.rb', line 3287

def convertFileToFile(file, file_path)
    if (!(!file_path.nil? && !file_path.empty?))
        raise Error.new(Pdfcrowd.create_invalid_value_message(file_path, "convertFileToFile::file_path", "image-to-image", "The string must not be empty.", "convert_file_to_file"), 470);
    end
    
    output_file = open(file_path, "wb")
    begin
        convertFileToStream(file, output_file)
        output_file.close()
    rescue Error => why
        output_file.close()
        FileUtils.rm(file_path)
        raise
    end
end

#convertFileToStream(file, out_stream) ⇒ Object

Convert a local file and write the result to an output stream.

  • file - The path to a local file to convert. The file must exist and not be empty.

  • out_stream - The output stream that will contain the conversion output.



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# File 'lib/pdfcrowd.rb', line 3274

def convertFileToStream(file, out_stream)
    if (!(File.file?(file) && !File.zero?(file)))
        raise Error.new(Pdfcrowd.create_invalid_value_message(file, "convertFileToStream::file", "image-to-image", "The file must exist and not be empty.", "convert_file_to_stream"), 470);
    end
    
    @files['file'] = file
    @helper.post(@fields, @files, @raw_data, out_stream)
end

#convertRawData(data) ⇒ Object

Convert raw data.

  • data - The raw content to be converted.

  • Returns - Byte array with the output.



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# File 'lib/pdfcrowd.rb', line 3307

def convertRawData(data)
    @raw_data['file'] = data
    @helper.post(@fields, @files, @raw_data)
end

#convertRawDataToFile(data, file_path) ⇒ Object

Convert raw data to a file.

  • data - The raw content to be converted.

  • file_path - The output file path. The string must not be empty.



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# File 'lib/pdfcrowd.rb', line 3325

def convertRawDataToFile(data, file_path)
    if (!(!file_path.nil? && !file_path.empty?))
        raise Error.new(Pdfcrowd.create_invalid_value_message(file_path, "convertRawDataToFile::file_path", "image-to-image", "The string must not be empty.", "convert_raw_data_to_file"), 470);
    end
    
    output_file = open(file_path, "wb")
    begin
        convertRawDataToStream(data, output_file)
        output_file.close()
    rescue Error => why
        output_file.close()
        FileUtils.rm(file_path)
        raise
    end
end

#convertRawDataToStream(data, out_stream) ⇒ Object

Convert raw data and write the result to an output stream.

  • data - The raw content to be converted.

  • out_stream - The output stream that will contain the conversion output.



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# File 'lib/pdfcrowd.rb', line 3316

def convertRawDataToStream(data, out_stream)
    @raw_data['file'] = data
    @helper.post(@fields, @files, @raw_data, out_stream)
end

#convertStream(in_stream) ⇒ Object

Convert the contents of an input stream.

  • in_stream - The input stream with source data.

  • Returns - Byte array containing the conversion output.



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# File 'lib/pdfcrowd.rb', line 3345

def convertStream(in_stream)
    @raw_data['stream'] = in_stream.read
    @helper.post(@fields, @files, @raw_data)
end

#convertStreamToFile(in_stream, file_path) ⇒ Object

Convert the contents of an input stream and write the result to a local file.

  • in_stream - The input stream with source data.

  • file_path - The output file path. The string must not be empty.



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# File 'lib/pdfcrowd.rb', line 3363

def convertStreamToFile(in_stream, file_path)
    if (!(!file_path.nil? && !file_path.empty?))
        raise Error.new(Pdfcrowd.create_invalid_value_message(file_path, "convertStreamToFile::file_path", "image-to-image", "The string must not be empty.", "convert_stream_to_file"), 470);
    end
    
    output_file = open(file_path, "wb")
    begin
        convertStreamToStream(in_stream, output_file)
        output_file.close()
    rescue Error => why
        output_file.close()
        FileUtils.rm(file_path)
        raise
    end
end

#convertStreamToStream(in_stream, out_stream) ⇒ Object

Convert the contents of an input stream and write the result to an output stream.

  • in_stream - The input stream with source data.

  • out_stream - The output stream that will contain the conversion output.



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# File 'lib/pdfcrowd.rb', line 3354

def convertStreamToStream(in_stream, out_stream)
    @raw_data['stream'] = in_stream.read
    @helper.post(@fields, @files, @raw_data, out_stream)
end

#convertUrl(url) ⇒ Object

Convert an image.

  • url - The address of the image to convert. The supported protocols are http:// and https://.

  • Returns - Byte array containing the conversion output.



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# File 'lib/pdfcrowd.rb', line 3215

def convertUrl(url)
    unless /(?i)^https?:\/\/.*$/.match(url)
        raise Error.new(Pdfcrowd.create_invalid_value_message(url, "convertUrl", "image-to-image", "The supported protocols are http:// and https://.", "convert_url"), 470);
    end
    
    @fields['url'] = url
    @helper.post(@fields, @files, @raw_data)
end

#convertUrlToFile(url, file_path) ⇒ Object

Convert an image and write the result to a local file.

  • url - The address of the image to convert. The supported protocols are http:// and https://.

  • file_path - The output file path. The string must not be empty.



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# File 'lib/pdfcrowd.rb', line 3241

def convertUrlToFile(url, file_path)
    if (!(!file_path.nil? && !file_path.empty?))
        raise Error.new(Pdfcrowd.create_invalid_value_message(file_path, "convertUrlToFile::file_path", "image-to-image", "The string must not be empty.", "convert_url_to_file"), 470);
    end
    
    output_file = open(file_path, "wb")
    begin
        convertUrlToStream(url, output_file)
        output_file.close()
    rescue Error => why
        output_file.close()
        FileUtils.rm(file_path)
        raise
    end
end

#convertUrlToStream(url, out_stream) ⇒ Object

Convert an image and write the result to an output stream.

  • url - The address of the image to convert. The supported protocols are http:// and https://.

  • out_stream - The output stream that will contain the conversion output.



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# File 'lib/pdfcrowd.rb', line 3228

def convertUrlToStream(url, out_stream)
    unless /(?i)^https?:\/\/.*$/.match(url)
        raise Error.new(Pdfcrowd.create_invalid_value_message(url, "convertUrlToStream::url", "image-to-image", "The supported protocols are http:// and https://.", "convert_url_to_stream"), 470);
    end
    
    @fields['url'] = url
    @helper.post(@fields, @files, @raw_data, out_stream)
end

#getConsumedCreditCount ⇒ Object

Get the number of credits consumed by the last conversion.

  • Returns - The number of credits.



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# File 'lib/pdfcrowd.rb', line 3614

def getConsumedCreditCount()
    return @helper.getConsumedCreditCount()
end

#getDebugLogUrl ⇒ Object

Get the URL of the debug log for the last conversion.

  • Returns - The link to the debug log.



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# File 'lib/pdfcrowd.rb', line 3599

def getDebugLogUrl()
    return @helper.getDebugLogUrl()
end

#getJobId ⇒ Object

Get the job id.

  • Returns - The unique job identifier.



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# File 'lib/pdfcrowd.rb', line 3620

def getJobId()
    return @helper.getJobId()
end

#getOutputSize ⇒ Object

Get the size of the output in bytes.

  • Returns - The count of bytes.



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# File 'lib/pdfcrowd.rb', line 3626

def getOutputSize()
    return @helper.getOutputSize()
end

#getRemainingCreditCount ⇒ Object

Get the number of conversion credits available in your account. This method can only be called after a call to one of the convertXtoY methods. The returned value can differ from the actual count if you run parallel conversions. The special value 999999 is returned if the information is not available.

  • Returns - The number of credits.



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# File 'lib/pdfcrowd.rb', line 3608

def getRemainingCreditCount()
    return @helper.getRemainingCreditCount()
end

#getVersion ⇒ Object

Get the version details.

  • Returns - API version, converter version, and client version.



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# File 'lib/pdfcrowd.rb', line 3632

def getVersion()
    return "client " + CLIENT_VERSION + ", API v2, converter " + @helper.getConverterVersion()
end

#setCanvasBackgroundColor(color) ⇒ Object

The canvas background color in RGB or RGBA hexadecimal format. The color fills the entire canvas regardless of margins. If no canvas size is specified and the image format supports background (e.g. PDF, PNG), the background color is applied too.

  • color - The value must be in RRGGBB or RRGGBBAA hexadecimal format.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3570

def setCanvasBackgroundColor(color)
    unless /^[0-9a-fA-F]{6,8}$/.match(color)
        raise Error.new(Pdfcrowd.create_invalid_value_message(color, "setCanvasBackgroundColor", "image-to-image", "The value must be in RRGGBB or RRGGBBAA hexadecimal format.", "set_canvas_background_color"), 470);
    end
    
    @fields['canvas_background_color'] = color
    self
end

#setCanvasDimensions(width, height) ⇒ Object

Set the output canvas dimensions. If no canvas size is specified, margins are applied as a border around the image.

  • width - Set the output canvas width. The value must be specified in inches “in”, millimeters “mm”, centimeters “cm”, or points “pt”.

  • height - Set the output canvas height. The value must be specified in inches “in”, millimeters “mm”, centimeters “cm”, or points “pt”.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3454

def setCanvasDimensions(width, height)
    setCanvasWidth(width)
    setCanvasHeight(height)
    self
end

#setCanvasHeight(height) ⇒ Object

Set the output canvas height.

  • height - The value must be specified in inches “in”, millimeters “mm”, centimeters “cm”, or points “pt”.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3440

def setCanvasHeight(height)
    unless /(?i)^0$|^[0-9]*\.?[0-9]+(pt|px|mm|cm|in)$/.match(height)
        raise Error.new(Pdfcrowd.create_invalid_value_message(height, "setCanvasHeight", "image-to-image", "The value must be specified in inches \"in\", millimeters \"mm\", centimeters \"cm\", or points \"pt\".", "set_canvas_height"), 470);
    end
    
    @fields['canvas_height'] = height
    self
end

#setCanvasSize(size) ⇒ Object

Set the output canvas size.

  • size - Allowed values are A0, A1, A2, A3, A4, A5, A6, Letter.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3414

def setCanvasSize(size)
    unless /(?i)^(A0|A1|A2|A3|A4|A5|A6|Letter)$/.match(size)
        raise Error.new(Pdfcrowd.create_invalid_value_message(size, "setCanvasSize", "image-to-image", "Allowed values are A0, A1, A2, A3, A4, A5, A6, Letter.", "set_canvas_size"), 470);
    end
    
    @fields['canvas_size'] = size
    self
end

#setCanvasWidth(width) ⇒ Object

Set the output canvas width.

  • width - The value must be specified in inches “in”, millimeters “mm”, centimeters “cm”, or points “pt”.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3427

def setCanvasWidth(width)
    unless /(?i)^0$|^[0-9]*\.?[0-9]+(pt|px|mm|cm|in)$/.match(width)
        raise Error.new(Pdfcrowd.create_invalid_value_message(width, "setCanvasWidth", "image-to-image", "The value must be specified in inches \"in\", millimeters \"mm\", centimeters \"cm\", or points \"pt\".", "set_canvas_width"), 470);
    end
    
    @fields['canvas_width'] = width
    self
end

#setConverterVersion(version) ⇒ Object

Set the converter version. Different versions may produce different output. Choose which one provides the best output for your case.

  • version - The version identifier. Allowed values are latest, 20.10, 18.10.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3675

def setConverterVersion(version)
    unless /(?i)^(latest|20.10|18.10)$/.match(version)
        raise Error.new(Pdfcrowd.create_invalid_value_message(version, "setConverterVersion", "image-to-image", "Allowed values are latest, 20.10, 18.10.", "set_converter_version"), 470);
    end
    
    @helper.setConverterVersion(version)
    self
end

#setDebugLog(value) ⇒ Object

Turn on the debug logging. Details about the conversion are stored in the debug log. The URL of the log can be obtained from the getDebugLogUrl method or available in conversion statistics.

  • value - Set to true to enable the debug logging.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3592

def setDebugLog(value)
    @fields['debug_log'] = value
    self
end

#setDpi(dpi) ⇒ Object

Set the DPI resolution of the input image. The DPI affects margin options specified in points too (e.g. 1 point is equal to 1 pixel in 96 DPI).

  • dpi - The DPI value.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3583

def setDpi(dpi)
    @fields['dpi'] = dpi
    self
end

#setHttpProxy(proxy) ⇒ Object

A proxy server used by Pdfcrowd conversion process for accessing the source URLs with HTTP scheme. It can help to circumvent regional restrictions or provide limited access to your intranet.

  • proxy - The value must have format DOMAIN_OR_IP_ADDRESS:PORT.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3649

def setHttpProxy(proxy)
    unless /(?i)^([a-z0-9]+(-[a-z0-9]+)*\.)+[a-z0-9]{1,}:\d+$/.match(proxy)
        raise Error.new(Pdfcrowd.create_invalid_value_message(proxy, "setHttpProxy", "image-to-image", "The value must have format DOMAIN_OR_IP_ADDRESS:PORT.", "set_http_proxy"), 470);
    end
    
    @fields['http_proxy'] = proxy
    self
end

#setHttpsProxy(proxy) ⇒ Object

A proxy server used by Pdfcrowd conversion process for accessing the source URLs with HTTPS scheme. It can help to circumvent regional restrictions or provide limited access to your intranet.

  • proxy - The value must have format DOMAIN_OR_IP_ADDRESS:PORT.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3662

def setHttpsProxy(proxy)
    unless /(?i)^([a-z0-9]+(-[a-z0-9]+)*\.)+[a-z0-9]{1,}:\d+$/.match(proxy)
        raise Error.new(Pdfcrowd.create_invalid_value_message(proxy, "setHttpsProxy", "image-to-image", "The value must have format DOMAIN_OR_IP_ADDRESS:PORT.", "set_https_proxy"), 470);
    end
    
    @fields['https_proxy'] = proxy
    self
end

#setMarginBottom(bottom) ⇒ Object

Set the output canvas bottom margin.

  • bottom - The value must be specified in inches “in”, millimeters “mm”, centimeters “cm”, or points “pt”.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3529

def setMarginBottom(bottom)
    unless /(?i)^0$|^[0-9]*\.?[0-9]+(pt|px|mm|cm|in)$/.match(bottom)
        raise Error.new(Pdfcrowd.create_invalid_value_message(bottom, "setMarginBottom", "image-to-image", "The value must be specified in inches \"in\", millimeters \"mm\", centimeters \"cm\", or points \"pt\".", "set_margin_bottom"), 470);
    end
    
    @fields['margin_bottom'] = bottom
    self
end

#setMarginLeft(left) ⇒ Object

Set the output canvas left margin.

  • left - The value must be specified in inches “in”, millimeters “mm”, centimeters “cm”, or points “pt”.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3542

def setMarginLeft(left)
    unless /(?i)^0$|^[0-9]*\.?[0-9]+(pt|px|mm|cm|in)$/.match(left)
        raise Error.new(Pdfcrowd.create_invalid_value_message(left, "setMarginLeft", "image-to-image", "The value must be specified in inches \"in\", millimeters \"mm\", centimeters \"cm\", or points \"pt\".", "set_margin_left"), 470);
    end
    
    @fields['margin_left'] = left
    self
end

#setMarginRight(right) ⇒ Object

Set the output canvas right margin.

  • right - The value must be specified in inches “in”, millimeters “mm”, centimeters “cm”, or points “pt”.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3516

def setMarginRight(right)
    unless /(?i)^0$|^[0-9]*\.?[0-9]+(pt|px|mm|cm|in)$/.match(right)
        raise Error.new(Pdfcrowd.create_invalid_value_message(right, "setMarginRight", "image-to-image", "The value must be specified in inches \"in\", millimeters \"mm\", centimeters \"cm\", or points \"pt\".", "set_margin_right"), 470);
    end
    
    @fields['margin_right'] = right
    self
end

#setMargins(top, right, bottom, left) ⇒ Object

Set the output canvas margins.

  • top - Set the output canvas top margin. The value must be specified in inches “in”, millimeters “mm”, centimeters “cm”, or points “pt”.

  • right - Set the output canvas right margin. The value must be specified in inches “in”, millimeters “mm”, centimeters “cm”, or points “pt”.

  • bottom - Set the output canvas bottom margin. The value must be specified in inches “in”, millimeters “mm”, centimeters “cm”, or points “pt”.

  • left - Set the output canvas left margin. The value must be specified in inches “in”, millimeters “mm”, centimeters “cm”, or points “pt”.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3558

def setMargins(top, right, bottom, left)
    setMarginTop(top)
    setMarginRight(right)
    setMarginBottom(bottom)
    setMarginLeft(left)
    self
end

#setMarginTop(top) ⇒ Object

Set the output canvas top margin.

  • top - The value must be specified in inches “in”, millimeters “mm”, centimeters “cm”, or points “pt”.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3503

def setMarginTop(top)
    unless /(?i)^0$|^[0-9]*\.?[0-9]+(pt|px|mm|cm|in)$/.match(top)
        raise Error.new(Pdfcrowd.create_invalid_value_message(top, "setMarginTop", "image-to-image", "The value must be specified in inches \"in\", millimeters \"mm\", centimeters \"cm\", or points \"pt\".", "set_margin_top"), 470);
    end
    
    @fields['margin_top'] = top
    self
end

#setOrientation(orientation) ⇒ Object

Set the output canvas orientation.

  • orientation - Allowed values are landscape, portrait.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3464

def setOrientation(orientation)
    unless /(?i)^(landscape|portrait)$/.match(orientation)
        raise Error.new(Pdfcrowd.create_invalid_value_message(orientation, "setOrientation", "image-to-image", "Allowed values are landscape, portrait.", "set_orientation"), 470);
    end
    
    @fields['orientation'] = orientation
    self
end

#setOutputFormat(output_format) ⇒ Object

The format of the output file.

  • output_format - Allowed values are png, jpg, gif, tiff, bmp, ico, ppm, pgm, pbm, pnm, psb, pct, ras, tga, sgi, sun, webp.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3383

def setOutputFormat(output_format)
    unless /(?i)^(png|jpg|gif|tiff|bmp|ico|ppm|pgm|pbm|pnm|psb|pct|ras|tga|sgi|sun|webp)$/.match(output_format)
        raise Error.new(Pdfcrowd.create_invalid_value_message(output_format, "setOutputFormat", "image-to-image", "Allowed values are png, jpg, gif, tiff, bmp, ico, ppm, pgm, pbm, pnm, psb, pct, ras, tga, sgi, sun, webp.", "set_output_format"), 470);
    end
    
    @fields['output_format'] = output_format
    self
end

#setPosition(position) ⇒ Object

Set the image position on the page.

  • position - Allowed values are center, top, bottom, left, right, top-left, top-right, bottom-left, bottom-right.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3477

def setPosition(position)
    unless /(?i)^(center|top|bottom|left|right|top-left|top-right|bottom-left|bottom-right)$/.match(position)
        raise Error.new(Pdfcrowd.create_invalid_value_message(position, "setPosition", "image-to-image", "Allowed values are center, top, bottom, left, right, top-left, top-right, bottom-left, bottom-right.", "set_position"), 470);
    end
    
    @fields['position'] = position
    self
end

#setPrintCanvasMode(mode) ⇒ Object

Set the mode to print the image on the content area of the page.

  • mode - Allowed values are default, fit, stretch.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3490

def setPrintCanvasMode(mode)
    unless /(?i)^(default|fit|stretch)$/.match(mode)
        raise Error.new(Pdfcrowd.create_invalid_value_message(mode, "setPrintCanvasMode", "image-to-image", "Allowed values are default, fit, stretch.", "set_print_canvas_mode"), 470);
    end
    
    @fields['print_canvas_mode'] = mode
    self
end

#setProxy(host, port, user_name, password) ⇒ Object

Specifies an HTTP proxy that the API client library will use to connect to the internet.

  • host - The proxy hostname.

  • port - The proxy port.

  • user_name - The username.

  • password - The password.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3710

def setProxy(host, port, user_name, password)
    @helper.setProxy(host, port, user_name, password)
    self
end

#setResize(resize) ⇒ Object

Resize the image.

  • resize - The resize percentage or new image dimensions.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3396

def setResize(resize)
    @fields['resize'] = resize
    self
end

#setRetryCount(count) ⇒ Object

Specifies the number of automatic retries when the 502 HTTP status code is received. The 502 status code indicates a temporary network issue. This feature can be disabled by setting to 0.

  • count - Number of retries.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3719

def setRetryCount(count)
    @helper.setRetryCount(count)
    self
end

#setRotate(rotate) ⇒ Object

Rotate the image.

  • rotate - The rotation specified in degrees.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3405

def setRotate(rotate)
    @fields['rotate'] = rotate
    self
end

#setTag(tag) ⇒ Object

Tag the conversion with a custom value. The tag is used in conversion statistics. A value longer than 32 characters is cut off.

  • tag - A string with the custom tag.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3640

def setTag(tag)
    @fields['tag'] = tag
    self
end

#setUseHttp(value) ⇒ Object

Specifies if the client communicates over HTTP or HTTPS with Pdfcrowd API. Warning: Using HTTP is insecure as data sent over HTTP is not encrypted. Enable this option only if you know what you are doing.

  • value - Set to true to use HTTP.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3689

def setUseHttp(value)
    @helper.setUseHttp(value)
    self
end

#setUserAgent(agent) ⇒ Object

Set a custom user agent HTTP header. It can be useful if you are behind a proxy or a firewall.

  • agent - The user agent string.

  • Returns - The converter object.



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# File 'lib/pdfcrowd.rb', line 3698

def setUserAgent(agent)
    @helper.setUserAgent(agent)
    self
end