Manual - QRCode

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Introduction

QRCode code comes from the 2D barcode family. You can encode a large amount of information within a single barcode.
All the ASCII characters from 0 to 255 are supported. The barcode size will be determined by the number of data to be encoded and the chosen error correction level. You can force the barcode to be rendered a specific size as long as there is enough room to encode the data.
You can enter ECI mode with the function SetAcceptECI().

This class inherits the BCGBarcode2D class.

Example

Methods

BCGqrcode's Methods

BCGBarcode2D's Methods

BCGBarcode's Methods

Code Example


var colorBlack = new BCGColor(Color.Black);

var colorWhite = new BCGColor(Color.White);



// Barcode Part

var code = new BCGqrcode();

code.SetScale(2);

code.SetForegroundColor(colorBlack);

code.SetBackgroundColor(colorWhite);

code.SetErrorLevel(1);

code.Parse("QRCode");



// Drawing Part

var drawing = new BCGDrawing(code, colorWhite);



var memoryStream = new MemoryStream();

await drawing

    .FinishAsync(BCGDrawing.ImageFormat.Png, memoryStream);

Method explanations

  • GetErrorLevel() — Gets the error correction level of the barcode
    Description
    This is the error correction level percentage.
    Returns
    int - value between 0 and 3
  • SetErrorLevel(int level) — Sets the error correction level of the barcode
    Description
    This is the error correction level percentage before drawing the barcode.
    The level must be an integer 0 to 3, or the corresponding letter L, M, Q, H.
    The error level can recover respectively, approximately 7%, 15%, 25%, and 30%.
    The default value is 1 (M).
  • GetSize() — Gets the size of the barcode
    Description
    Gets the size mode of the final barcode.
    See SetSize() for more details.
    Returns
    int - constant value defined in SetSize()
  • SetSize(int value) — Sets the size of the barcode
    Description
    The size of the final barcode will be decided automatically depending on the data you give and the error correction level percentage you have chosen, unless you specify it with the method SetQRSize().
    You can specify different values to this method to get a different code. There are the possible values:
    BCGqrcode.Size.Smallest : The code will be the smallest possible
    BCGqrcode.Size.Micros : The code will be in Micro mode
    BCGqrcode.Size.Full : The code will be in Full mode
    The default value is BCGqrcode.Size.Full.
  • SetStructuredAppend(int snum, int st, string sname) — Specifies that data will be expanded between multiple barcodes
    Description
    QRCode code data can be separated throughout many different barcodes.
    The first argument is the barcode number (beginning with 1), the second argument is the total number of barcodes you have. The last argument is the identifier of your group. This argument must stay the same for every barcode in the group.
    The specification indicates that this argument should be the data that will be encoded throughout all your barcodes.
    Providing a big string for this argument is CPU consuming. Nothing prevents you from using a different identifier if your barcode reader supports it.
    It is possible to encode the data on a maximum of 16 different barcodes.
    Returns
    bool - true on success, false on failure
  • GetFNC1() — Gets if the FNC1 is activated
    Description
    Gets if the FNC1 is activated.
    See SetFNC1() for more details.
    Returns
    int - constant value defined in SetFNC1()
  • SetFNC1(int fnc1Type, string fnc1Id) — Transforms your barcode in GS1 or AIM standard
    Description
    This method will transform your barcode to accept FNC1 to be GS1 standard or AIM standard.
    The first argument can be:
    - BCGqrcode.Fnc1.None : The code will not follow any standards.
    - BCGqrcode.Fnc1.Gs1 : The code will follow the GS1 standard. The second argument is not used. Separate GS1 identifiers by %. To write a %, write it double %%.
    - BCGqrcode.Fnc1.Aim : The code will follow the AIM standard. The second argument must be used, it is the application indicator. It must be a letter (string) or 2 digits (integer).
    The default value is BCGqrcode.Fnc1.None.
  • GetAcceptECI() — Gets if ECI codes are accepted
    Description
    Gets if ECI codes are accepted.
    See SetAcceptECI() for more details.
    Returns
    bool
  • SetAcceptECI(bool accept) — Specifies to accepts the ECI codes
    Description
    By setting true in this argument, the backslash characters (ASCII 92 \) will be processed as special characters. These are the special characters you can write.
    - \\ : Writes a simple backslash
    - \xxxxxx : Writes the ECI xxxxxx character with x representing an integer from 0 to 9
    The default value is false.
  • GetQuietZone() — Gets if the quiet zone will be drawn
    Returns
    bool - true if activated, false otherwise
  • SetQuietZone(bool quietZone) — Specifies to draw a quiet zone around the barcode
    Description
    To be read correctly, the QRCode must have a quiet zone around the image. You can, however, turn this off.
    The default value is true.
  • GetMirror() — Gets if the barcode is in mirror mode
    Description
    Gets if the barcode is in mirror mode.
    Returns
    bool - true if activated, false otherwise
  • SetMirror(bool mirror) — Specifies to draw the barcode in mirror
    Description
    It is possible to read the barcode in mirror mode. If you set this variable to true, the barcode will be drawn in mirror.
    The default value is false.
  • GetMask() — Gets the mask for the encoding
    Description
    Gets the mask for the encoding.
    Returns
    int - value between -1 and 8
  • SetMask(int mask) — Specifies a mask to use instead of calculating one
    Description
    QRCode calculates 8 different masks before drawing the code. A mask allows changing the appearance of the barcode in order to make it more readable for a barcode reader. Mathematical operations are executed on every mask to verify which one would fit the best. Those operations are highly CPU consuming. If the generation speed is important for you, you may want to consider forcing a specific mask. Note that your barcode may become hard to read or unreadable.
    If your barcode is a Micro, the valid mask are 0 to 3.
    If your barcode is a Full, the valid mask are 0 to 7.
    If you set -1, the mask is selected automatically.
    The default value is -1.
  • SetQRSize(int qrSize, bool qrMicro) — Specifies the size to use for the barcode
    Description
    Barcode Bakery will pick the smallest barcode size based on the information you provide.
    If you wish to have a specific size, you can force the size with this method.
    The first argument is the barcode version, and the second indicates if you want a Micro mode.
    If qrMicro is set to true, the valid qrSize are 1 to 4.
    If qrMicro is set to false, the valid qrSize are 1 to 40.
    If you set -1, the barcode size will be picked automatically. The second argument doesn't matter in that case; if you want to have a Micro or a Full barcode, see the method SetSize().
    The default value is -1.
  • SetScaleX(int scaleX) — Sets the scaling X for the barcode
    Description
    The width in pixel of one module.
    The default value is 1.
    Note that this method is protected.
  • SetScaleY(int scaleY) — Sets the scaling Y for the barcode
    Description
    The height in pixel of one module.
    The default value is 1.
    Note that this method is protected.
  • Parse(string text) — Analyzes a text message to draw afterwards
    Description
    The data you pass to the text argument must be supported by the type of barcode you use.
    Check each barcode's introduction section to obtain more information on how to use this method within each symbology.
  • Draw(Graphics image) — Draws the barcode on the image
    Description
    The value of the image argument must be an image resource. The size of the image can be defined by the value received from GetDimension().
  • GetDimension(int width, int height) — Returns an array containing the required size for the image
    Description
    Returns an array in which the first index is the image width and the second index is the image height.
    The arguments are used to specify the starting point of the drawing. Should be 0 for both.
    The BCGDrawing class uses this method to create the image resource.
    Returns
    array(int, int) - [0] is the width, [1] is the height
  • GetScale() — Gets the scale of the barcode
    Description
    Gets the scale of the barcode. The value is the number of the "smallest" unit in pixel.
    Returns
    int - value in pixels
  • SetScale(int scale) — Sets the scale of the barcode
    Description
    The barcode will be x times bigger. Then a pixel will be x by x for its size.
  • GetForegroundColor() — Gets the color of the bars
    Description
    Gets the color of the bars of the barcode.
    Returns
    BCGColor
  • SetForegroundColor(BCGColor color) — Sets the color of the bars
    Description
    Sets the color of the bars of the barcode. By default, the color is black. This argument can be a BCGColor class or any other argument that BCGColor can accept in its constructor.
  • GetBackgroundColor() — Gets the color of the spaces
    Description
    Gets the color of the spaces of the barcode.
    Returns
    BCGColor
  • SetBackgroundColor(BCGColor color) — Sets the color of the spaces
    Description
    Sets the color of the spaces of the barcode. By default, the color is white. This argument can be a BCGColor class or any other argument that BCGColor can accept in its constructor.
  • SetColor(BCGColor foregroundColor, BCGColor backgroundColor) — Sets the color of the bars and spaces
    Description
    An easy and fast method to set the color of the bars and spaces. Check the SetForegroundColor() and SetBackgroundColor().
  • GetOffsetX() — Gets the X offset
    Description
    Gets the X offset of the barcode in pixels. The value isn't multiplied by the scale.
    Returns
    int - value in pixels
  • SetOffsetX(int value) — Sets the X offset
    Description
    Specifies the X offset of the barcode in pixels multiplied by the scale. The required size returned by GetDimension() will be modified accordingly.
  • GetOffsetY() — Gets the Y offset
    Description
    Gets the Y offset of the barcode in pixels. The value isn't multiplied by the scale.
    Returns
    int - value in pixels
  • SetOffsetY(int value) — Sets the Y offset
    Description
    Specifies the Y offset of the barcode in pixels multiplied by the scale. The required size returned by GetDimension() will be modified accordingly.
  • AddLabel(BCGLabel label) — Adds a label to the graphic
    Description
    Adds a BCGLabel object to the drawing.
  • RemoveLabel(BCGLabel label) — Removes a label from the graphic
    Description
    Removes a specific BCGLabel object from the drawing.
  • ClearLabels() — Removes the labels from the graphic
    Description
    Clears the BCGLabel objects from the drawing.