From 50996f28baf0361e2171a1f0cebdcc7106fef2ac Mon Sep 17 00:00:00 2001 From: Kurt Date: Sat, 4 May 2019 19:42:18 -0400 Subject: Use Pandoc to generate README and doc.go --- doc/document.md | 254 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 254 insertions(+) create mode 100644 doc/document.md (limited to 'doc/document.md') diff --git a/doc/document.md b/doc/document.md new file mode 100644 index 0000000..16ca686 --- /dev/null +++ b/doc/document.md @@ -0,0 +1,254 @@ +# GoFPDF document generator + +[![MIT licensed][badge-mit]][license] +[![Report][badge-report]][report] +[![GoDoc][badge-doc]][godoc] + +![][logo] + +Package gofpdf implements a PDF document generator with high level support for +text, drawing and images. + +## Features + +* Choice of measurement unit, page format and margins +* Page header and footer management +* Automatic page breaks, line breaks, and text justification +* Inclusion of JPEG, PNG, GIF, TIFF and basic path-only SVG images +* Colors, gradients and alpha channel transparency +* Outline bookmarks +* Internal and external links +* TrueType, Type1 and encoding support +* Page compression +* Lines, Bézier curves, arcs, and ellipses +* Rotation, scaling, skewing, translation, and mirroring +* Clipping +* Document protection +* Layers +* Templates +* Barcodes +* Charting facility + +gofpdf has no dependencies other than the Go standard library. All tests pass +on Linux, Mac and Windows platforms. + +Like FPDF version 1.7, from which gofpdf is derived, this package does not yet +support UTF-8 fonts. In particular, languages that require more than one code +page such as Chinese, Japanese, and Arabic are not currently supported. This is +explained in [issue 109][issue109]. However, support is provided to +automatically translate UTF-8 runes to code page encodings for languages that +have fewer than 256 glyphs. + +## Installation + +To install the package on your system, run + +```shell +go get github.com/jung-kurt/gofpdf +``` + +Later, to receive updates, run + +```shell +go get -u -v github.com/jung-kurt/gofpdf/... +``` + +## Quick Start + +The following Go code generates a simple PDF file. + +```go +pdf := gofpdf.New("P", "mm", "A4", "") +pdf.AddPage() +pdf.SetFont("Arial", "B", 16) +pdf.Cell(40, 10, "Hello, world") +err := pdf.OutputFileAndClose("hello.pdf") +``` + +See the functions in the [fpdf_test.go][fpdf-test] file (shown as examples in +this documentation) for more advanced PDF examples. + +## Errors + +If an error occurs in an Fpdf method, an internal error field is set. After +this occurs, Fpdf method calls typically return without performing any +operations and the error state is retained. This error management scheme +facilitates PDF generation since individual method calls do not need to be +examined for failure; it is generally sufficient to wait until after `Output()` +is called. For the same reason, if an error occurs in the calling application +during PDF generation, it may be desirable for the application to transfer the +error to the Fpdf instance by calling the `SetError()` method or the +`SetErrorf()` method. At any time during the life cycle of the Fpdf instance, +the error state can be determined with a call to `Ok()` or `Err()`. The error +itself can be retrieved with a call to `Error()`. + +## Conversion Notes + +This package is a relatively straightforward translation from the original +[FPDF][fpdf-site] library written in PHP (despite the caveat in the +introduction to [Effective Go][effective-go]). The +API names have been retained even though the Go idiom would suggest otherwise +(for example, `pdf.GetX()` is used rather than simply `pdf.X()`). The +similarity of the two libraries makes the original FPDF website a good source +of information. It includes a forum and FAQ. + +However, some internal changes have been made. Page content is built up using +buffers (of type bytes.Buffer) rather than repeated string concatenation. +Errors are handled as explained above rather than panicking. Output is +generated through an interface of type io.Writer or io.WriteCloser. A number of +the original PHP methods behave differently based on the type of the arguments +that are passed to them; in these cases additional methods have been exported +to provide similar functionality. Font definition files are produced in JSON +rather than PHP. + +## Example PDFs + +A side effect of running `go test ./...` is the production of a number of +example PDFs. These can be found in the gofpdf/pdf directory after the tests +complete. + +Please note that these examples run in the context of a test. In order run an +example as a standalone application, you'll need to examine +[fpdf_test.go][fpdf-test] for some helper routines, for example +`exampleFilename()` and `summary()`. + +Example PDFs can be compared with reference copies in order to verify that they +have been generated as expected. This comparison will be performed if a PDF +with the same name as the example PDF is placed in the gofpdf/pdf/reference +directory and if the third argument to `ComparePDFFiles()` in +internal/example/example.go is true. (By default it is false.) The routine that +summarizes an example will look for this file and, if found, will call +`ComparePDFFiles()` to check the example PDF for equality with its reference PDF. +If differences exist between the two files they will be printed to standard +output and the test will fail. If the reference file is missing, the comparison +is considered to succeed. In order to successfully compare two PDFs, the +placement of internal resources must be consistent and the internal creation +timestamps must be the same. To do this, the methods `SetCatalogSort()` and +`SetCreationDate()` need to be called for both files. This is done automatically +for all examples. + +## Nonstandard Fonts + +Nothing special is required to use the standard PDF fonts (courier, helvetica, +times, zapfdingbats) in your documents other than calling `SetFont()`. + +In order to use a different TrueType or Type1 font, you will need to generate a +font definition file and, if the font will be embedded into PDFs, a compressed +version of the font file. This is done by calling the `MakeFont()` function or +using the included makefont command line utility. To create the utility, cd +into the makefont subdirectory and run `go build`. This will produce a +standalone executable named makefont. Select the appropriate encoding file from +the font subdirectory and run the command as in the following example. + +```shell +./makefont --embed --enc=../font/cp1252.map --dst=../font ../font/calligra.ttf +``` + +In your PDF generation code, call AddFont() to load the font and, as with the +standard fonts, SetFont() to begin using it. Most examples, including the +package example, demonstrate this method. Good sources of free, open-source +fonts include [Google Fonts][gfont] and [DejaVu Fonts][dfont]. + +## Related Packages + +The [draw2d][draw2d-site] package is a two dimensional vector graphics library that +can generate output in different forms. It uses gofpdf for its document +production mode. + +## Contributing Changes + +gofpdf is a global community effort and you are invited to make it even better. +If you have implemented a new feature or corrected a problem, please consider +contributing your change to the project. A contribution that does not directly +pertain to the core functionality of gofpdf should be placed in its own +directory directly beneath the `contrib` directory. + +Here are guidelines for making submissions. Your change should + +* be compatible with the MIT License +* be properly documented +* be formatted with `go fmt` +* include an example in [fpdf_test.go][test] if appropriate +* conform to the standards of [golint][lint] and +[go vet][vet], that is, `golint .` and +`go vet .` should not generate any warnings +* not diminish [test coverage][coverage] + +[Pull requests][pr] are the preferred means of accepting your changes. + +## License + +gofpdf is released under the MIT License. It is copyrighted by Kurt Jung and +the contributors acknowledged below. + +## Acknowledgments + +This package's code and documentation are closely derived from the [FPDF][fpdf-site] +library created by Olivier Plathey, and a number of font and image resources +are copied directly from it. Bruno Michel has provided valuable assistance with +the code. Drawing support is adapted from the FPDF geometric figures script by +David Hernández Sanz. Transparency support is adapted from the FPDF +transparency script by Martin Hall-May. Support for gradients and clipping is +adapted from FPDF scripts by Andreas Würmser. Support for outline bookmarks is +adapted from Olivier Plathey by Manuel Cornes. Layer support is adapted from +Olivier Plathey. Support for transformations is adapted from the FPDF +transformation script by Moritz Wagner and Andreas Würmser. PDF protection is +adapted from the work of Klemen Vodopivec for the FPDF product. Lawrence +Kesteloot provided code to allow an image's extent to be determined prior to +placement. Support for vertical alignment within a cell was provided by Stefan +Schroeder. Ivan Daniluk generalized the font and image loading code to use the +Reader interface while maintaining backward compatibility. Anthony Starks +provided code for the Polygon function. Robert Lillack provided the Beziergon +function and corrected some naming issues with the internal curve function. +Claudio Felber provided implementations for dashed line drawing and generalized +font loading. Stani Michiels provided support for multi-segment path drawing +with smooth line joins, line join styles, enhanced fill modes, and has helped +greatly with package presentation and tests. Templating is adapted by Marcus +Downing from the FPDF_Tpl library created by Jan Slabon and Setasign. Jelmer +Snoeck contributed packages that generate a variety of barcodes and help with +registering images on the web. Jelmer Snoek and Guillermo Pascual augmented the +basic HTML functionality with aligned text. Kent Quirk implemented +backwards-compatible support for reading DPI from images that support it, and +for setting DPI manually and then having it properly taken into account when +calculating image size. Paulo Coutinho provided support for static embedded +fonts. Dan Meyers added support for embedded JavaScript. David Fish added a +generic alias-replacement function to enable, among other things, table of +contents functionality. Andy Bakun identified and corrected a problem in which +the internal catalogs were not sorted stably. Paul Montag added encoding and +decoding functionality for templates, including images that are embedded in +templates; this allows templates to be stored independently of gofpdf. Paul +also added support for page boxes used in printing PDF documents. Wojciech +Matusiak added supported for word spacing. + +## Roadmap + +* Handle UTF-8 source text natively. Until then, automatic translation of +UTF-8 runes to code page bytes is provided. +* Improve test coverage as reported by the coverage tool. + + +[badge-author]: https://img.shields.io/badge/author-Kurt_Jung-blue.svg +[badge-doc]: https://img.shields.io/badge/godoc-GoFPDF-blue.svg +[badge-github]: https://img.shields.io/badge/project-Git_Hub-blue.svg +[badge-mit]: https://img.shields.io/badge/license-MIT-blue.svg +[badge-report]: https://goreportcard.com/badge/github.com/jung-kurt/gofpdf +[badge-status]: https://travis-ci.org/jung-kurt/gofpdf.svg?branch=master +[coverage]: https://blog.golang.org/cover +[dfont]: http://dejavu-fonts.org/ +[draw2d-site]: https://github.com/llgcode/draw2d +[effective-go]: https://golang.org/doc/effective_go.html +[fpdf-site]: http://www.fpdf.org/ +[fpdf-test]: https://github.com/jung-kurt/gofpdf/blob/master/fpdf_test.go +[gfont]: https://fonts.google.com/ +[github]: https://github.com/jung-kurt/gofpdf +[godoc]: https://godoc.org/github.com/jung-kurt/gofpdf +[issue109]: https://github.com/jung-kurt/gofpdf/issues/109 +[jung]: https://github.com/jung-kurt/ +[license]: https://raw.githubusercontent.com/jung-kurt/gofpdf/master/LICENSE +[lint]: https://github.com/golang/lint +[logo]: https://github.com/jung-kurt/gofpdf/raw/master/image/logo_gofpdf.jpg?raw=true +[pr]: https://help.github.com/articles/using-pull-requests/ +[report]: https://goreportcard.com/report/github.com/jung-kurt/gofpdf +[status]: https://travis-ci.org/jung-kurt/gofpdf +[test]: https://github.com/jung-kurt/gofpdf/blob/master/fpdf_test.go +[vet]: https://golang.org/cmd/vet/ -- cgit v1.2.1-24-ge1ad From ce58337af2deb2d3f26d0d2f9f1a18f4da64f638 Mon Sep 17 00:00:00 2001 From: Kurt Date: Mon, 6 May 2019 07:55:23 -0400 Subject: Convey changes made in README to doc/document.txt so pandoc can generate README and doc.go --- doc/document.md | 37 ++++++++++++++++++++----------------- 1 file changed, 20 insertions(+), 17 deletions(-) (limited to 'doc/document.md') diff --git a/doc/document.md b/doc/document.md index 16ca686..eafb015 100644 --- a/doc/document.md +++ b/doc/document.md @@ -28,16 +28,15 @@ text, drawing and images. * Templates * Barcodes * Charting facility +* UTF-8 support gofpdf has no dependencies other than the Go standard library. All tests pass on Linux, Mac and Windows platforms. -Like FPDF version 1.7, from which gofpdf is derived, this package does not yet -support UTF-8 fonts. In particular, languages that require more than one code -page such as Chinese, Japanese, and Arabic are not currently supported. This is -explained in [issue 109][issue109]. However, support is provided to -automatically translate UTF-8 runes to code page encodings for languages that -have fewer than 256 glyphs. +gofpdf supports UTF-8 fonts and "right-to-left" languages. + +Also, support is provided to automatically translate UTF-8 runes to code page +encodings for languages that have fewer than 256 glyphs. ## Installation @@ -132,19 +131,24 @@ for all examples. Nothing special is required to use the standard PDF fonts (courier, helvetica, times, zapfdingbats) in your documents other than calling `SetFont()`. -In order to use a different TrueType or Type1 font, you will need to generate a -font definition file and, if the font will be embedded into PDFs, a compressed -version of the font file. This is done by calling the `MakeFont()` function or -using the included makefont command line utility. To create the utility, cd -into the makefont subdirectory and run `go build`. This will produce a -standalone executable named makefont. Select the appropriate encoding file from -the font subdirectory and run the command as in the following example. +You should use AddUTF8Font or AddUTF8FontFromBytes to add UTF-8 TTF font. +`RTL()` and `LTR()` methods switch between "right-to-left" and "left-to-right" +mode. + +In order to use a different non-UTF-8 TrueType or Type1 font, you will need to +generate a font definition file and, if the font will be embedded into PDFs, a +compressed version of the font file. This is done by calling the MakeFont +function or using the included makefont command line utility. To create the +utility, cd into the makefont subdirectory and run "go build". This will +produce a standalone executable named makefont. Select the appropriate encoding +file from the font subdirectory and run the command as in the following +example. ```shell ./makefont --embed --enc=../font/cp1252.map --dst=../font ../font/calligra.ttf ``` -In your PDF generation code, call AddFont() to load the font and, as with the +In your PDF generation code, call `AddFont()` to load the font and, as with the standard fonts, SetFont() to begin using it. Most examples, including the package example, demonstrate this method. Good sources of free, open-source fonts include [Google Fonts][gfont] and [DejaVu Fonts][dfont]. @@ -218,12 +222,11 @@ the internal catalogs were not sorted stably. Paul Montag added encoding and decoding functionality for templates, including images that are embedded in templates; this allows templates to be stored independently of gofpdf. Paul also added support for page boxes used in printing PDF documents. Wojciech -Matusiak added supported for word spacing. +Matusiak added supported for word spacing. Artem Korotkiy added support of +UTF-8 fonts. ## Roadmap -* Handle UTF-8 source text natively. Until then, automatic translation of -UTF-8 runes to code page bytes is provided. * Improve test coverage as reported by the coverage tool. -- cgit v1.2.1-24-ge1ad From 19544237e961fe8e9ee7ca55fdafe724de35f889 Mon Sep 17 00:00:00 2001 From: Kurt Date: Mon, 6 May 2019 08:02:02 -0400 Subject: Reorganize documentation slightly. Place utf-8 feature more prominently. --- doc/document.md | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'doc/document.md') diff --git a/doc/document.md b/doc/document.md index eafb015..f650372 100644 --- a/doc/document.md +++ b/doc/document.md @@ -11,6 +11,7 @@ text, drawing and images. ## Features +* UTF-8 support * Choice of measurement unit, page format and margins * Page header and footer management * Automatic page breaks, line breaks, and text justification @@ -28,7 +29,6 @@ text, drawing and images. * Templates * Barcodes * Charting facility -* UTF-8 support gofpdf has no dependencies other than the Go standard library. All tests pass on Linux, Mac and Windows platforms. @@ -131,9 +131,9 @@ for all examples. Nothing special is required to use the standard PDF fonts (courier, helvetica, times, zapfdingbats) in your documents other than calling `SetFont()`. -You should use AddUTF8Font or AddUTF8FontFromBytes to add UTF-8 TTF font. -`RTL()` and `LTR()` methods switch between "right-to-left" and "left-to-right" -mode. +You should use `AddUTF8Font()` or `AddUTF8FontFromBytes()` to add a TrueType +UTF-8 encoded font. Use `RTL()` and `LTR()` methods switch between +"right-to-left" and "left-to-right" mode. In order to use a different non-UTF-8 TrueType or Type1 font, you will need to generate a font definition file and, if the font will be embedded into PDFs, a -- cgit v1.2.1-24-ge1ad From 71267fb332989953c8b27ec9a31832767886c926 Mon Sep 17 00:00:00 2001 From: Kurt Date: Tue, 7 May 2019 10:06:44 -0400 Subject: Add note about CJK fonts --- doc/document.md | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'doc/document.md') diff --git a/doc/document.md b/doc/document.md index f650372..33f5dac 100644 --- a/doc/document.md +++ b/doc/document.md @@ -33,7 +33,10 @@ text, drawing and images. gofpdf has no dependencies other than the Go standard library. All tests pass on Linux, Mac and Windows platforms. -gofpdf supports UTF-8 fonts and "right-to-left" languages. +gofpdf supports UTF-8 TrueType fonts and "right-to-left" languages. Note that +Chinese, Japanese, and Korean characters may not be included in many general +purpose fonts. For these languages, a specialized font (for example, +[NotoSansSC][noto] for simplified Chinese) can be used. Also, support is provided to automatically translate UTF-8 runes to code page encodings for languages that have fewer than 256 glyphs. @@ -250,6 +253,7 @@ UTF-8 fonts. [license]: https://raw.githubusercontent.com/jung-kurt/gofpdf/master/LICENSE [lint]: https://github.com/golang/lint [logo]: https://github.com/jung-kurt/gofpdf/raw/master/image/logo_gofpdf.jpg?raw=true +[noto]: https://github.com/jsntn/webfonts/blob/master/NotoSansSC-Regular.ttf [pr]: https://help.github.com/articles/using-pull-requests/ [report]: https://goreportcard.com/report/github.com/jung-kurt/gofpdf [status]: https://travis-ci.org/jung-kurt/gofpdf -- cgit v1.2.1-24-ge1ad From 0fb5126fefeb1a7be7ed1c4dac02539af931a237 Mon Sep 17 00:00:00 2001 From: Dave Barnes Date: Wed, 15 May 2019 10:45:22 -0500 Subject: Add support for imported objects and templates to version 1 of gofpdf. --- doc/document.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'doc/document.md') diff --git a/doc/document.md b/doc/document.md index 33f5dac..de39656 100644 --- a/doc/document.md +++ b/doc/document.md @@ -226,7 +226,7 @@ decoding functionality for templates, including images that are embedded in templates; this allows templates to be stored independently of gofpdf. Paul also added support for page boxes used in printing PDF documents. Wojciech Matusiak added supported for word spacing. Artem Korotkiy added support of -UTF-8 fonts. +UTF-8 fonts. Dave Barnes added support for imported objects and templates. ## Roadmap -- cgit v1.2.1-24-ge1ad From eca8e8f3216d7e07f60db6cea8fd5067d99e3c27 Mon Sep 17 00:00:00 2001 From: Kurt Date: Wed, 15 May 2019 12:43:04 -0400 Subject: Add PDF import as feature in documentation --- doc/document.md | 1 + 1 file changed, 1 insertion(+) (limited to 'doc/document.md') diff --git a/doc/document.md b/doc/document.md index de39656..fa544af 100644 --- a/doc/document.md +++ b/doc/document.md @@ -29,6 +29,7 @@ text, drawing and images. * Templates * Barcodes * Charting facility +* Import PDFs as templates gofpdf has no dependencies other than the Go standard library. All tests pass on Linux, Mac and Windows platforms. -- cgit v1.2.1-24-ge1ad From a9a0e5d100759b0563d809ea80eae2c33cc4599a Mon Sep 17 00:00:00 2001 From: Kurt Date: Mon, 12 Aug 2019 10:36:31 -0400 Subject: Acknowledge Brigham Thompson's contribution. --- doc/document.md | 1 + 1 file changed, 1 insertion(+) (limited to 'doc/document.md') diff --git a/doc/document.md b/doc/document.md index fa544af..d7d84cd 100644 --- a/doc/document.md +++ b/doc/document.md @@ -228,6 +228,7 @@ templates; this allows templates to be stored independently of gofpdf. Paul also added support for page boxes used in printing PDF documents. Wojciech Matusiak added supported for word spacing. Artem Korotkiy added support of UTF-8 fonts. Dave Barnes added support for imported objects and templates. +Brigham Thompson added support for rounded rectangles. ## Roadmap -- cgit v1.2.1-24-ge1ad From 225d875579b542d345946a136d24f8add53b4dc3 Mon Sep 17 00:00:00 2001 From: Kurt Date: Sat, 7 Sep 2019 09:21:33 -0400 Subject: Acknowledge Joe Westcott's contributions --- doc/document.md | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'doc/document.md') diff --git a/doc/document.md b/doc/document.md index d7d84cd..b2289ce 100644 --- a/doc/document.md +++ b/doc/document.md @@ -228,7 +228,8 @@ templates; this allows templates to be stored independently of gofpdf. Paul also added support for page boxes used in printing PDF documents. Wojciech Matusiak added supported for word spacing. Artem Korotkiy added support of UTF-8 fonts. Dave Barnes added support for imported objects and templates. -Brigham Thompson added support for rounded rectangles. +Brigham Thompson added support for rounded rectangles. Joe Westcott added +underline functionality and optimized image storage. ## Roadmap -- cgit v1.2.1-24-ge1ad