barcode_test.go

Documentation: github.com/jung-kurt/gofpdf/contrib/barcode

     1  package barcode_test
     2  
     3  import (
     4  	"testing"
     5  
     6  	"github.com/boombuler/barcode/code128"
     7  	"github.com/boombuler/barcode/qr"
     8  	"github.com/jung-kurt/gofpdf"
     9  	"github.com/jung-kurt/gofpdf/contrib/barcode"
    10  	"github.com/jung-kurt/gofpdf/internal/example"
    11  )
    12  
    13  func createPdf() (pdf *gofpdf.Fpdf) {
    14  	pdf = gofpdf.New("L", "mm", "A4", "")
    15  	pdf.SetFont("Helvetica", "", 12)
    16  	pdf.SetFillColor(200, 200, 220)
    17  	pdf.AddPage()
    18  	return
    19  }
    20  
    21  func ExampleRegister() {
    22  	pdf := createPdf()
    23  
    24  	fileStr := example.Filename("contrib_barcode_Register")
    25  
    26  	bcode, err := code128.Encode("gofpdf")
    27  
    28  	if err == nil {
    29  		key := barcode.Register(bcode)
    30  		var width float64 = 100
    31  		var height float64 = 10.0
    32  		barcode.BarcodeUnscalable(pdf, key, 15, 15, &width, &height, false)
    33  	}
    34  
    35  	err = pdf.OutputFileAndClose(fileStr)
    36  	example.Summary(err, fileStr)
    37  	// Output:
    38  	// Successfully generated ../../pdf/contrib_barcode_Register.pdf
    39  }
    40  
    41  func ExampleRegisterCodabar() {
    42  	pdf := createPdf()
    43  
    44  	key := barcode.RegisterCode128(pdf, "codabar")
    45  	var width float64 = 100
    46  	var height float64 = 10
    47  	barcode.BarcodeUnscalable(pdf, key, 15, 15, &width, &height, false)
    48  
    49  	fileStr := example.Filename("contrib_barcode_RegisterCodabar")
    50  	err := pdf.OutputFileAndClose(fileStr)
    51  	example.Summary(err, fileStr)
    52  	// Output:
    53  	// Successfully generated ../../pdf/contrib_barcode_RegisterCodabar.pdf
    54  }
    55  
    56  func ExampleRegisterAztec() {
    57  	pdf := createPdf()
    58  
    59  	key := barcode.RegisterAztec(pdf, "aztec", 33, 0)
    60  	barcode.Barcode(pdf, key, 15, 15, 100, 100, false)
    61  
    62  	fileStr := example.Filename("contrib_barcode_RegisterAztec")
    63  	err := pdf.OutputFileAndClose(fileStr)
    64  	example.Summary(err, fileStr)
    65  	// Output:
    66  	// Successfully generated ../../pdf/contrib_barcode_RegisterAztec.pdf
    67  }
    68  
    69  func ExampleRegisterCode128() {
    70  	pdf := createPdf()
    71  
    72  	key := barcode.RegisterCode128(pdf, "code128")
    73  	barcode.Barcode(pdf, key, 15, 15, 100, 10, false)
    74  
    75  	fileStr := example.Filename("contrib_barcode_RegisterCode128")
    76  	err := pdf.OutputFileAndClose(fileStr)
    77  	example.Summary(err, fileStr)
    78  	// Output:
    79  	// Successfully generated ../../pdf/contrib_barcode_RegisterCode128.pdf
    80  }
    81  
    82  func ExampleRegisterCode39() {
    83  	pdf := createPdf()
    84  
    85  	key := barcode.RegisterCode39(pdf, "CODE39", false, true)
    86  	barcode.Barcode(pdf, key, 15, 15, 100, 10, false)
    87  
    88  	fileStr := example.Filename("contrib_barcode_RegisterCode39")
    89  	err := pdf.OutputFileAndClose(fileStr)
    90  	example.Summary(err, fileStr)
    91  	// Output:
    92  	// Successfully generated ../../pdf/contrib_barcode_RegisterCode39.pdf
    93  }
    94  
    95  func ExampleRegisterDataMatrix() {
    96  	pdf := createPdf()
    97  
    98  	key := barcode.RegisterDataMatrix(pdf, "datamatrix")
    99  	barcode.Barcode(pdf, key, 15, 15, 20, 20, false)
   100  
   101  	fileStr := example.Filename("contrib_barcode_RegisterDataMatrix")
   102  	err := pdf.OutputFileAndClose(fileStr)
   103  	example.Summary(err, fileStr)
   104  	// Output:
   105  	// Successfully generated ../../pdf/contrib_barcode_RegisterDataMatrix.pdf
   106  }
   107  
   108  func ExampleRegisterEAN() {
   109  	pdf := createPdf()
   110  
   111  	key := barcode.RegisterEAN(pdf, "96385074")
   112  	barcode.Barcode(pdf, key, 15, 15, 100, 10, false)
   113  
   114  	fileStr := example.Filename("contrib_barcode_RegisterEAN")
   115  	err := pdf.OutputFileAndClose(fileStr)
   116  	example.Summary(err, fileStr)
   117  	// Output:
   118  	// Successfully generated ../../pdf/contrib_barcode_RegisterEAN.pdf
   119  }
   120  
   121  func ExampleRegisterQR() {
   122  	pdf := createPdf()
   123  
   124  	key := barcode.RegisterQR(pdf, "qrcode", qr.H, qr.Unicode)
   125  	barcode.Barcode(pdf, key, 15, 15, 100, 10, false)
   126  
   127  	fileStr := example.Filename("contrib_barcode_RegisterQR")
   128  	err := pdf.OutputFileAndClose(fileStr)
   129  	example.Summary(err, fileStr)
   130  	// Output:
   131  	// Successfully generated ../../pdf/contrib_barcode_RegisterQR.pdf
   132  }
   133  
   134  func ExampleRegisterTwoOfFive() {
   135  	pdf := createPdf()
   136  
   137  	key := barcode.RegisterTwoOfFive(pdf, "1234567895", true)
   138  	barcode.Barcode(pdf, key, 15, 15, 100, 10, false)
   139  
   140  	fileStr := example.Filename("contrib_barcode_RegisterTwoOfFive")
   141  	err := pdf.OutputFileAndClose(fileStr)
   142  	example.Summary(err, fileStr)
   143  	// Output:
   144  	// Successfully generated ../../pdf/contrib_barcode_RegisterTwoOfFive.pdf
   145  }
   146  
   147  func ExampleRegisterPdf417() {
   148  	pdf := createPdf()
   149  
   150  	key := barcode.RegisterPdf417(pdf, "1234567895", 10, 5)
   151  	barcode.Barcode(pdf, key, 15, 15, 100, 10, false)
   152  
   153  	fileStr := example.Filename("contrib_barcode_RegisterPdf417")
   154  	err := pdf.OutputFileAndClose(fileStr)
   155  	example.Summary(err, fileStr)
   156  	// Output:
   157  	// Successfully generated ../../pdf/contrib_barcode_RegisterPdf417.pdf
   158  }
   159  
   160  // TestRegisterCode128 ensures that no panic arises when an invalid barcode is registered.
   161  func TestRegisterCode128(t *testing.T) {
   162  	pdf := createPdf()
   163  	barcode.RegisterCode128(pdf, "Invalid character: é")
   164  }
   165  
   166  // TestBarcodeUnscalable shows that the barcode may be scaled or not by providing optional heights and widths.
   167  func TestBarcodeUnscalable(t *testing.T) {
   168  	pdf := createPdf()
   169  
   170  	key := barcode.RegisterCode128(pdf, "code128")
   171  	var width float64 = 100
   172  	var height float64 = 10
   173  	barcode.BarcodeUnscalable(pdf, key, 15, 15, &width, &height, false)
   174  	barcode.BarcodeUnscalable(pdf, key, 15, 35, nil, &height, false)
   175  	barcode.BarcodeUnscalable(pdf, key, 15, 55, &width, nil, false)
   176  	barcode.BarcodeUnscalable(pdf, key, 15, 75, nil, nil, false)
   177  
   178  	fileStr := example.Filename("contrib_barcode_Barcode")
   179  	err := pdf.OutputFileAndClose(fileStr)
   180  	example.Summary(err, fileStr)
   181  	// Output:
   182  	// Successfully generated ../../pdf/contrib_barcode_Barcode.pdf
   183  }
   184  
   185  // TestGetUnscaledBarcodeDimensions shows that the width and height returned by the function match that of the barcode
   186  func TestGetUnscaledBarcodeDimensions(t *testing.T) {
   187  	pdf := createPdf()
   188  
   189  	key := barcode.RegisterQR(pdf, "qrcode", qr.H, qr.Unicode)
   190  	barcode.BarcodeUnscalable(pdf, key, 15, 15, nil, nil, false)
   191  	w, h := barcode.GetUnscaledBarcodeDimensions(pdf, key)
   192  
   193  	pdf.SetDrawColor(255, 0, 0)
   194  	pdf.Line(15, 15, 15+w, 15+h)
   195  
   196  	fileStr := example.Filename("contrib_barcode_GetBarcodeDimensions")
   197  	err := pdf.OutputFileAndClose(fileStr)
   198  	example.Summary(err, fileStr)
   199  	// Output:
   200  	// Successfully generated ../../pdf/contrib_barcode_GetBarcodeDimensions.pdf
   201  }
   202  
   203  // TestBarcodeNonIntegerScalingFactors shows that the barcode may be scaled to non-integer sizes
   204  func TestBarcodeNonIntegerScalingFactors(t *testing.T) {
   205  	pdf := gofpdf.New("L", "in", "A4", "")
   206  	pdf.SetFont("Helvetica", "", 12)
   207  	pdf.SetFillColor(200, 200, 220)
   208  	pdf.AddPage()
   209  
   210  	key := barcode.RegisterQR(pdf, "qrcode", qr.H, qr.Unicode)
   211  	var scale float64 = 1.5
   212  	barcode.BarcodeUnscalable(pdf, key, 0.5, 0.5, &scale, &scale, false)
   213  
   214  	pdf.SetDrawColor(255, 0, 0)
   215  	pdf.Line(0.5, 0.5, 0.5+scale, 0.5+scale)
   216  
   217  	fileStr := example.Filename("contrib_barcode_BarcodeScaling")
   218  	err := pdf.OutputFileAndClose(fileStr)
   219  	example.Summary(err, fileStr)
   220  	// Output:
   221  	// Successfully generated ../../pdf/contrib_barcode_BarcodeScaling.pdf
   222  }
   223
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