{"@attributes":{"version":"2.0"},"channel":{"title":"Documentation \u2013 Barcode Generation","link":"https:\/\/docs.aspose.com\/barcode\/phpjava\/generate-barcodes\/","description":"Recent content in Barcode Generation on Documentation","generator":"Hugo -- gohugo.io","item":[{"title":"Phpjava: Customize Barcode Appearance","link":"https:\/\/docs.aspose.com\/barcode\/phpjava\/customize-barcodes\/","pubDate":"Mon, 01 Jan 0001 00:00:00 +0000","guid":"https:\/\/docs.aspose.com\/barcode\/phpjava\/customize-barcodes\/","description":"\n \n \n

In the present article, you can find details about customizing various parameters of barcodes to be generated, such as barcode label size, rotation angle, barcode paddings, and barcode image borders.<\/p>\n\n\n

\n\nIf you need any clarifications, feel free to reach out Aspose Technical Support<\/a>: ask your questions at Aspose.Barcode Forum<\/a> or contact Aspose Paid Support Helpdesk<\/a>.<\/em>\n<\/div>\n\n

Overview<\/strong><\/h2>\n

Aspose.BarCode for PHP via Java<\/strong><\/em> provides class BarcodeGenerator<\/em><\/a> to generate barcodes in line with the predefined settings so that each element of a barcode image gets its fixed position relatively to other elements, as shown in the scheme below. A barcode label comprises the following parts: barcode text, bars, top and bottom captions, image borders, and paddings. All elements besides barcode bars are optional.<\/p>\n

<\/p>\n

Barcode Image Sizing Modes<\/strong><\/h2>\n

In general, Aspose.BarCode for PHP via Java<\/strong><\/em> defines barcode image size in terms of height and width automatically. The library enables developers to manage image size settings manually by determining the height and width of barcode labels using setImageHeight (Unit $value)<\/em> and setImageWidth (Unit $value)<\/em> functions of class BaseGenerationParameters<\/em><\/a>.<\/p>\n

Barcode image size can be varied by using varios sizing modes that can be enabled using the AutoSizeMode<\/em><\/a> class . AutoSizeMode<\/em> provides the following options: NONE<\/em>, NEAREST<\/em>, and INTERPOLATION<\/em>. In Interpolation<\/em> and Nearest<\/em> modes, barcode image size is managed based on the values of width and height, and other parameters are ignored. In turn, when the None<\/em> mode is enabled, barcode image size is defined ignoring width and height; instead, other parameters, such as XDimension<\/em>, are used. AutoSizeMode<\/em> takes the NONE<\/em> value by default.<\/p>\n

Further in the article, different barcode sizing modes are discussed.<\/p>\n

AutoSizeMode.None<\/strong><\/h3>\n

As outlined above, setting the None<\/em> mode implies that barcode image size is managed based on different parameters ignoring width and height. To specify barcode size, class BarcodeParameters<\/em><\/a> provides a special function called setXDimension (Unit $value)<\/em>. It is used to define the minimum size of bars in 1D barcodes or cells in 2D barcodes. Other barcode sizing parameters are calculated based on the XDimension<\/em> value.<\/p>\n

Various barcode standards often determine XDimension<\/em> to provide compatibility between printing and scanning equipment units so that barcode images could be captured by scanners used in various companies. XDimension<\/em> is related to the data density of a barcode type, meaning that it determines the amount of data that can be encoded in one barcode. Setting a small value of XDimension<\/em> results in covering less space to place each encoded character in a barcode image. In contrast, setting a bigger value of XDimension<\/em> leads to enlarging the area required to encode each character and decreasing the number of characters per inch.<\/p>\n

The barcode label shown below has been generated using the None<\/em> mode.<\/p>\n

<\/p>\n

AutoSizeMode.Interpolation<\/strong><\/h3>\n

Setting AutoSizeMode.INTERPOLATION<\/em> means that only the values specified using setImageHeight (Unit $value)<\/em> and setImageWidth (Unit $value)<\/em> functions are used to set the barcode size. In this case, barcode image size is determined using the manually specified values of height and width even when it results in producing distorted barcode proportions and the deterioration of barcode readability. The Interpolation<\/em> mode is appropriate to create barcode images with the resolution of 300 dpi or higher. Using such resolution will allow keeping barcode distortions negligible and avoiding the descrease of barcode readability.<\/p>\n

The barcode label generated through the Interpolation<\/em> mode is demonstrated below.<\/p>\n

<\/p> \n

AutoSizeMode.Nearest<\/strong><\/h3>\n

To set barcode image size, the Nearest<\/em> mode uses only the values specified using setImageHeight (Unit $value)<\/em> and setImageWidth (Unit $value)<\/em> functions of class BaseGenerationParameters<\/em><\/a> similarly to the Interpolation<\/em> mode. In this mode, BarcodeGenerator<\/em><\/a> aims at finding the most suitable image size to avoid barcode proportion distortion and readability deterioration.<\/p>\n

The barcode label created through the Nearest<\/em> mode is provided below.<\/p>\n

<\/p>\n

Barcode Rotation<\/strong><\/h2>\n

In Aspose.BarCode for PHP via Java<\/strong><\/em>, barcode image rotation can be set through the setRotationAngle (float $value)<\/em> function of class BaseGenerationParameters<\/em><\/a>. Passing a value in degrees to this function allows generating a barcode image rotated at the desired angle clockwise or counterclockwise.<\/p>\n

The sample barcode labels rotated by various angles are shown below.<\/p>\n\n\n\n\n\n
Rotation Angle<\/th>\nIs Set to +90\u00b0<\/th>\nIs Set to -90\u00b0<\/th>\nIs Set to +45\u00b0<\/th>\nIs Set to -45\u00b0<\/th>\nIs Set to 180\u00b0<\/th>\n<\/tr>\n<\/thead>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Customizing Barcode Borders and Padding<\/strong><\/h2>\n

Aspose.BarCode for PHP via Java<\/strong><\/em> allows customizing barcode image borders and paddings. Corresponding functions are described further.<\/p>\n

Border Settings<\/strong><\/h3>\n

Applying default border settings results in generating barcode images without borders. Alternatively, they can be defined manually using five styles: solid, dotted, dashed, dash-dot, and dash dot dot. The border style can be modified using special class BorderParameters<\/em><\/a>. In addition, this class allows setting border thickness in any available units and colors using setWidth (Unit $value)<\/em> and setColor (string $hexValue)<\/em> functions. Border styles can be changed using the setDashStyle (int $value)<\/em> function of the same class.<\/p>\n

Barcode labels demonstrated below have been generated using different border styles.<\/p>\n\n\n\n\n\n
Border Style<\/th>\nSolid<\/th>\nDashed<\/th>\nDotted<\/th>\nDash Dot<\/th>\nDash Dot Dot<\/th>\n<\/tr>\n<\/thead>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Paddings<\/strong><\/h3>\n

Paddings from the edges of a barcode image or its borders can be set in four directions using a special class called Padding<\/em><\/a> and its functions: setLeft (Unit $value)<\/em>, setRight (Unit $value)<\/em>, setTop (Unit $value)<\/em>, and setBottom (Unit $value)<\/em>. By default, the padding value is set to 5 points in all directions.<\/p>\n\n\n\n\n\n
Padding<\/th>\nMillimeters<\/th>\nPixels<\/th>\n<\/tr>\n<\/thead>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Bar Width Reduction<\/strong><\/h2>\n

The other important property that needs to be determined accurately is bar width. Setting an approriate value of this parameter is critical to assure successful barcode scanning. Due to the so-called ink floating phenomenon, some barcode printing techniques may result in increasing actual bar width after printing out barcode images. This happens often in commercial printing in cases when conventional printing presses are used. To ensure that printed barcode images will be printed out with appropriate bar width, setting a bar width reduction value may be required.<\/p>\n

Bar width reduction is a way to mitigate the effecet of ink floating in a graphic design file of a barcode. Aspose.BarCode for PHP via Java<\/strong><\/em> allows modifying bar width through the setBarWidthReduction (Unit $value)<\/em> function of class BarcodeParameters<\/em><\/a>. Passing the required value while calling this function allows decreasing bar width in 1D barcodes or cell size in 2D barcodes. To find out the suitable BWR value for a printer, it is necessary to check special tables provided by printer manufacturers. Modifying this parameter is not applicable to laser printers.<\/p>\n

The sample barcodes shown below have been generated with and without applying bar width reduction.<\/p>\n\n\n\n\n\n\n
Barcode Type<\/th>\nBar Width Reduction 0<\/th>\nBar Width Reduction 3<\/th>\n<\/tr>\n<\/thead>\n
Code 128<\/strong><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
Data Matrix<\/strong><\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n "},{"title":"Phpjava: Manage Barcode Parameters","link":"https:\/\/docs.aspose.com\/barcode\/phpjava\/set-barcode-parameters\/","pubDate":"Mon, 01 Jan 0001 00:00:00 +0000","guid":"https:\/\/docs.aspose.com\/barcode\/phpjava\/set-barcode-parameters\/","description":"\n \n \n

This article describes how to manage settings provided by Aspose.BarCode for PHP via Java<\/strong><\/em> to adjust barcode measurement units (millimeters, inches, points, or pixels) and barcode image resolution.<\/p>\n

Overview<\/strong><\/h2>\n

Cartesian coordinate systems use coordinates of pixels or drawable objects to represent image data for raster or vector images. To link these coordinates to real-world measurement units, such as millimeters or inches, Aspose.BarCode for PHP via Java<\/strong><\/em> includes a special class called Unit<\/em><\/a>. Class Unit<\/em><\/a> provides various functions that serve to convert barcode size values defined in pixels, millimeters, inches, or points to any of the supported measurement units automatically. In this way, the size of elements in real-world measurement units can be converted into pixels to generate barcode images.<\/p>\n\n\n

\n\nIf you need any clarifications, feel free to reach out Aspose Technical Support<\/a>: ask your questions at Aspose.Barcode Forum<\/a> or contact Aspose Paid Support Helpdesk<\/a>.<\/em>\n<\/div>\n\n

Measuring Barcode Size in Various Units<\/strong><\/h2>\n

Class Unit<\/em><\/a> allows developers to set measurement units for barcode parameters and can be modified using functions of class BarcodeParameters<\/em><\/a>, such as setBarCodeHeight (Unit $value)<\/em>, setBarCodeWidth (Unit $value)<\/em>, and setXDimension (Unit $value)<\/em>. Aspose.BarCode for PHP via Java<\/strong><\/em> determines measurement units in the GraphicsUnit<\/em><\/a> enum. Class Unit<\/em><\/a> can be used to convert measurement units into the desired ones: Millimeters<\/em>, Pixels<\/em>, Inches<\/em>, Point<\/em> (1\/72 inch), or Document<\/em> (1\/300 inch). By default, Millimeters<\/em> are used as size measurement units.<\/p>\n

Barcode labels created using various unit settings are shown below.<\/p>\n\n\n\n\n\n
Size Units<\/th>\nPixels<\/th>\nMillimeters<\/th>\n<\/tr>\n<\/thead>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Image Resolution<\/strong><\/h2>\n

Aspose.BarCode for PHP via Java<\/strong><\/em> allows developers to customize barcode image resolution settings using class Unit<\/em><\/a>. This class includes the setPixels (float $value)<\/em> function to convert all non-pixel size measurements into digital coordinates in pixels. To convert size values into requested supported untis, the following functions need to be used: setInches (float $value)<\/em>, setMillimeters (float $value)<\/em>, setDocument (float $value)<\/em>, setPoint (float $value)<\/em>, and setPixels (float $value)<\/em>.<\/p>\n

Barcode images with different resolution settings are given below.<\/p>\n\n\n\n\n\n
Resolution<\/th>\nIs Set to 96 dpi<\/th>\nIs Set to 300 dpi<\/th>\n<\/tr>\n<\/thead>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n "},{"title":"Phpjava: Set Barcode Text","link":"https:\/\/docs.aspose.com\/barcode\/phpjava\/set-barcode-text\/","pubDate":"Mon, 01 Jan 0001 00:00:00 +0000","guid":"https:\/\/docs.aspose.com\/barcode\/phpjava\/set-barcode-text\/","description":"\n \n \n

This article describes how to work with text placed on barcode images. Aspose.BarCode for PHP via Java<\/strong><\/em> enables customizing various parameters of barcode text: visibility, font, spacings, text location, and wrapping modes.<\/p>\n\n\n

\n\nIf you need any clarifications, feel free to reach out Aspose Technical Support<\/a>: ask your questions at Aspose.Barcode Forum<\/a> or contact Aspose Paid Support Helpdesk<\/a>.<\/em>\n<\/div>\n\n

Overview<\/strong><\/h2>\n

Aspose.BarCode for PHP via Java<\/strong><\/em> allows developers to add human-readable text on barcode images in three different forms shown in the scheme below: main text label, top caption, and bottom caption. Any of these elements can be placed optionally or hidden.<\/p>\n

<\/p>\n

Barcode Text<\/strong><\/h2>\n

The main barcode text label contains short text information detached from bars by spacings. This text label can take six positions, as explained in the figure below: top center, top left, top right, bottom center, bottom left, or bottom right.<\/p>\n

<\/p>\n

Text Visibility<\/strong><\/h3>\n

Aspose.BarCode for PHP via Java<\/strong><\/em> allows developers to visualize or hide barcode text. If there is no need to put human-readable text on a barcode image, barcode images can be generated without text labels, as shown below.<\/p>\n

<\/p> \n

Text Positioning<\/strong><\/h3>\n

The position of a barcode text label can be modified by customizing two parameters: alignment and location. These parameters can be set using setLocation (int $value)<\/em> and setAlignment (int $value)<\/em> functions of class CodetextParameters<\/a>.<\/p>\n

Location<\/strong><\/h4>\n

The setLocation (int $value)<\/em> function allows setting the vertical position of a text label, namely, placing it above or below bars, as shown in figures below. The default setting is Below<\/em>.<\/p>\n\n\n\n\n\n
Text Location<\/th>\nAbove Barcode<\/th>\nBelow Barcode<\/th>\n<\/tr>\n<\/thead>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Alignment<\/strong><\/h4>\n

The setAlignment (int $value)<\/em> function is used to set the horizontal position of a text label in a barcode image: right-side, left-side, or center, as illustrated in figures below. The default setting of barcode text alignment is CENTER<\/em>.<\/p>\n\n\n\n\n\n
Text Alignment<\/th>\nLeft<\/th>\nCenter<\/th>\nRight<\/th>\n<\/tr>\n<\/thead>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Spacing between Bars and Text Label<\/strong><\/h3>\n

The default spacing (gap) between bars and a text label is equal to 2pt. It is possible to modify this spacing using the setSpace (Unit $value)<\/em> function of class CodetextParameters<\/em><\/a>. This function does not apply to several barcode types, including EAN-13, EAN-8, UPC-E, UPC-A, ISMN, ISBN, ISSN, and UpcaGs1DatabarCoupon.<\/p>\n

Sample barcode images shown below have been created with various spacing settings (five and forty pixels).<\/p>\n\n\n\n\n\n
Text Spacing<\/th>\nIs Set to 5 Pixels<\/th>\nIs Set to 40 Pixels<\/th>\n<\/tr>\n<\/thead>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Font Settings<\/strong><\/h3>\n

To manage barcode text font, Aspose.BarCode for PHP via Java<\/strong><\/em> provides setFont (FontUnit $value)<\/em> and setFontMode (int $value)<\/em> functions of class CodetextParameters<\/em><\/a>. The default font setting is Arial 5pt regular. This setting is ignored if the Auto<\/em> mode is enabled using the setFontMode (int $value)<\/em> function. This function is used to manage font size settings automatically. If it is called passing the Auto<\/em> value, font size is determined automatically based on xDimension<\/em> in such a way that the text label should take only one text line. FontMode.AUTO<\/em> is recommended when AutoSizeMode.NEAREST<\/em> or AutoSizeMode.INTERPOLATION<\/em> settings are enabled. Alternatilvely, setting FontMode.MANUAL<\/em> allows managing font size manually. Other font parameters, including font style, are set similarly in both Auto<\/em> and Manual<\/em> modes.<\/p>\n

Barcode images shown below have been created with these two font modes.<\/p>\n\n\n\n\n\n
Font Setting Mode<\/th>\nAuto<\/th>\nManual<\/th>\n<\/tr>\n<\/thead>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

NoWrap Mode for Text<\/strong><\/h3>\n

It is possible to avoid line breaks in text that is too long for a single row using the setNoWrap (bool $value)<\/em> function of class CodetextParameters<\/em><\/a>. When the True<\/em> setting is enabled, the text label is displayed in a single row regardless of the text length. The default setting is False<\/em>. Barcode images shown below have been created with different NoWrap<\/em> settings.<\/p>\n\n\n\n\n\n
Text Wrapping Mode<\/th>\nWrap<\/th>\nNo Wrap<\/th>\n<\/tr>\n<\/thead>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Replacing Barcode Text in 2D Barcodes<\/strong><\/h2>\n

To replace barcode text in 2D barcodes with some other text label with improved readability without modifications of the barcode image itself, it is possible to call the setTwoDDisplayText (string $value)<\/em> function of class CodetextParameters<\/em><\/a> and pass new text to be placed. This is applicable to selected 2D types, including QR Code, Aztec, DataMatrix, MaxiCode, PDF417, and DotCode.<\/p>\n

The sample barcode image shown below has been created using the TwoDDisplayText<\/em> setting.<\/p>\n

<\/p>\n

Caption<\/strong><\/h2>\n

Aspose.BarCode for PHP via Java<\/strong><\/em> allows developers to place additional text labels in a barcode image in form of captions above and below barcodes. As demonstrated in the figure below, such text captions have a parameter called Padding<\/em> that allows modifying spacing size between captions and the nearest element (barcodes, main text label, or borders). Both text captions are disabled by default. If required, they can be shown by one or both simulteneously.<\/p>\n

<\/p>\n

Caption Visibility<\/strong><\/h3>\n

As stated above, additional text captions CaptionAbove<\/em> and CaptionBelow<\/em> are disabled by default. When required, top and bottom caption labels can be enabled. The setVisible (bool $value)<\/em> function of class CaptionParameters<\/em><\/a> can be used to display captions. Then, caption text can be inserted through the setText (string $value)<\/em> function. If required, caption labels can replace main text in 1D barcodes by enabling the former and disabling the latter. Figures given below demonstrate how caption positioning options can be managed.<\/p>\n\n\n\n\n\n
Caption Visibility<\/th>\nAbove<\/th>\nBelow<\/th>\n<\/tr>\n<\/thead>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Text Positioning<\/strong><\/h3>\n

The setAlignment (int $value)<\/em> function of class CaptionParameters<\/em><\/a> allows modifying horizontal positions of caption labels in three directions: right, left, and center. The default position of captions is center. Figures shown below demonstrate barcode images with the top caption label with different alignment positions.<\/p>\n\n\n\n\n\n
Caption Alignment<\/th>\nLeft<\/th>\nCenter<\/th>\nRight<\/th>\n<\/tr>\n<\/thead>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Caption Padding<\/strong><\/h3>\n

The setPadding (Padding $value)<\/em> function of class CaptionParameters<\/em><\/a> can be used to manage spacings for text captions. By default, the spacinng value is set to {5pt; 5pt; 0; 5pt} for the top caption and {0; 5pt; 5pt; 5pt} for the bottom one according to the standard Rectangle setting {Top, Left, Bottom, Right}. This function does not apply when captions are disabled. Barcode images shown below have been generated with different padding settings.<\/p>\n\n\n\n\n\n
Caption Padding<\/th>\nIs Set to 5 Pixels<\/th>\nIs Set to 40 Pixels<\/th>\n<\/tr>\n<\/thead>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Caption Font<\/strong><\/h3>\n

Aspose.BarCode for PHP via Java<\/strong><\/em> does not enable automatic font size setting based on barcode size. Accordingly, caption font size requires manual setting. For top and bottom captions, various parameters, including font style and size can be set independently. Caption font can be customized using functions of class FontUnit<\/em><\/a>. The default setting for caption font is Arial 8pt regular.\nThe barcode image shown below explains different caption font settings.<\/p>\n

<\/p>\n

NoWrap Mode for Caption<\/strong><\/h3>\n

The setNoWrap (bool $value)<\/em> function of class CaptionParameters<\/em><\/a> allows disabling text line breaks when a text string is too large to fit in one line. When this function is called passing the True<\/em> value, caption text is always displayed as a single line. Barcode images below show the difference between setNoWrap.TRUE<\/em> and setNoWrap.FALSE<\/em> settings.<\/p>\n\n\n\n\n\n
Caption Wrapping<\/th>\nIs Set to Wrap<\/em><\/th>\nIs Set to No Wrap<\/em><\/th>\n<\/tr>\n<\/thead>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n "},{"title":"Phpjava: Modify Barcode Color Scheme","link":"https:\/\/docs.aspose.com\/barcode\/phpjava\/modify-barcode-color\/","pubDate":"Mon, 01 Jan 0001 00:00:00 +0000","guid":"https:\/\/docs.aspose.com\/barcode\/phpjava\/modify-barcode-color\/","description":"\n \n \n

In this article, the options available in Aspose.BarCode for PHP via Java<\/strong><\/em> to manage barcode color scheme and its key elements are descsribed.<\/p>\n\n\n

\n\nIf you need any clarifications, feel free to reach out Aspose Technical Support<\/a>: ask your questions at Aspose.Barcode Forum<\/a> or contact Aspose Paid Support Helpdesk<\/a>.<\/em>\n<\/div>\n\n

Overview<\/strong><\/h2>\n

Usually barcode images have the black-and-white color scheme. To provide the possibilty of modifying barcode colors, Aspose.BarCode for PHP via Java<\/strong><\/em> enables customizing system RGB colors for key barcode elements, including the following:<\/p>\n