gopdf

package module
v0.1.1 Latest Latest
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 Go to latest Published: Feb 15, 2023 License: MIT Imports: 22 Imported by: 0

README

gopdf

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项目介绍

gopdf 是一个生成 PDF 文档的 Golang 库. 主要有以下的特点:

  • 支持 Unicode 字符 (包括中文, 日语, 朝鲜语, 等等.)
  • 文档内容的自动定位与分页, 减少用户的工作量.
  • 支持图片插入, 支持多种图片格式, PNG, BMP, JPEG, WEBP, TIFF
  • 支持文档压缩
  • 复杂表格组件, 块文本等
  • markdown 文本可以直接转换成 pdf
  • 手动实现了 markdown 解析库, 可以提供其他 markdown 开发

安装

go get -u github.com/tiechui1994/gopdf

案例展示:

image

代码参考 example/complex_report_test

image

代码参考 example/simple_table_test

image

代码参考 example/mutil_table_test

未来开发计划

  1. 准备尝试开发 Markdown 的语法解析库, 然后通过解析库将 markdown 转换成 pdf, 可以支持定义一些颜色风格. 目前正 在研究 marked.js 前段库, 寻找灵感.

  2. 优化 Markedown 的解析库, 调整 markdown 转 pdf 的参数, 使得 pdf 页面更美观.

  3. 开发更加通俗易用的组件, 比如 paragraph, tablecell 等.

  4. 使用 node 相关的技术进行桥接操作.

Documentation

Index

Constants

View Source 
const (
	DIV_STRAIGHT = 1 // 实线边框
	DIV_DASHED   = 2 // 虚线边框
	DIV_DOTTED   = 3 // 点状线的边框
	DIV_NONE     = 4 // 无边框
)
View Source 
const (
	FONT_NORMAL = "normal"
	FONT_BOLD   = "bold"
	FONT_IALIC  = "italic"
)
View Source 
const (
	TYPE_TEXT     = "text"
	TYPE_STRONG   = "strong"   // **strong**
	TYPE_EM       = "em"       // *em*
	TYPE_CODESPAN = "codespan" // `codespan`, “`codespan“`
	TYPE_CODE     = "code"     //
	TYPE_LINK     = "link"     // [xx](http://www.link)
	TYPE_IMAGE    = "image"    // ![xxx](https://www.image)

	TYPE_SPACE = "space"

	TYPE_PARAGRAPH  = "paragraph"
	TYPE_HEADING    = "heading"
	TYPE_LIST       = "list"
	TYPE_BLOCKQUOTE = "blockquote"
)
View Source 
const (
	PNG  = "png"
	BMP  = "bmp"
	WEBP = "webp"
	TIFF = "tiff"
	JPEG = "jpeg"
)

Variables

This section is empty.

Functions

func CommonGenerateAtomicCell 

func CommonGenerateAtomicCell(children *[]mardown) (pagebreak, over bool, err error)

func Convert2JPEG 

func Convert2JPEG(srcPath string, dstPath string) error

func ConvertBMP2JPEG 

func ConvertBMP2JPEG(srcPath, dstPath string) (err error)

func ConvertPNG2JPEG 

func ConvertPNG2JPEG(srcPath, dstPath string) (err error)

func ConvertTIFF2JPEG 

func ConvertTIFF2JPEG(srcPath, dstPath string) (err error)

func ConvertWEBP2JPEG 

func ConvertWEBP2JPEG(srcPath, dstPath string) (err error)

func DrawFiveCycle 

func DrawFiveCycle(srcPath string)

func DrawInnerFiveCycle 

func DrawInnerFiveCycle(srcPath string)

func DrawPNG 

func DrawPNG(srcPath string)

func DrawPlumCurve 

func DrawPlumCurve(srcPath string)

func DrawRotationOutCircle 

func DrawRotationOutCircle(srcPath string)

func DrawSunLine 

func DrawSunLine(srcPath string)

func GetImageWidthAndHeight 

func GetImageWidthAndHeight(picturePath string) (w, h int)

Types

type Div 

type Div struct {
	// contains filtered or unexported fields
}

带有各种边框的内容, 可以自动换行

func NewDiv 

func NewDiv(lineHeight, lineSpce float64, pdf *core.Report) *Div

func NewDivWithWidth 

func NewDivWithWidth(width float64, lineHeight, lineSpce float64, pdf *core.Report) *Div

func (*Div) Copy 

func (div *Div) Copy(content string) *Div

func (*Div) GenerateAtomicCell 

func (div *Div) GenerateAtomicCell() error

自动分页

func (*Div) GetHeight 

func (div *Div) GetHeight() (height float64)

func (*Div) GetWidth 

func (div *Div) GetWidth() (width float64)

func (*Div) HorizontalCentered 

func (div *Div) HorizontalCentered() *Div

func (*Div) RightAlign 

func (div *Div) RightAlign() *Div

func (*Div) SetBackColor 

func (div *Div) SetBackColor(color string) *Div

func (*Div) SetBorder 

func (div *Div) SetBorder(border core.Scope) *Div

func (*Div) SetContent 

func (div *Div) SetContent(content string) *Div

func (*Div) SetFont 

func (div *Div) SetFont(font core.Font) *Div

func (*Div) SetFontColor 

func (div *Div) SetFontColor(color string) *Div

func (*Div) SetFontWithColor 

func (div *Div) SetFontWithColor(font core.Font, color string) *Div

func (*Div) SetFrameType 

func (div *Div) SetFrameType(frameType int) *Div

func (*Div) SetMarign 

func (div *Div) SetMarign(margin core.Scope) *Div

type HLine 

type HLine struct {
	// contains filtered or unexported fields
}

func NewHLine 

func NewHLine(pdf *core.Report) *HLine

func (*HLine) GenerateAtomicCell 

func (h *HLine) GenerateAtomicCell()

func (*HLine) SetColor 

func (h *HLine) SetColor(color float64) *HLine

func (*HLine) SetMargin 

func (h *HLine) SetMargin(margin core.Scope) *HLine

func (*HLine) SetWidth 

func (h *HLine) SetWidth(width float64) *HLine

type Image 

type Image struct {
	// contains filtered or unexported fields
}

func NewImage 

func NewImage(path string, pdf *core.Report) *Image

func NewImageWithWidthAndHeight 

func NewImageWithWidthAndHeight(path string, width, height float64, pdf *core.Report) *Image

func (*Image) GenerateAtomicCell 

func (image *Image) GenerateAtomicCell() (pagebreak, over bool, err error)

自动换行

func (*Image) GetHeight 

func (image *Image) GetHeight() float64

func (*Image) GetWidth 

func (image *Image) GetWidth() float64

func (*Image) SetAutoBreak 

func (image *Image) SetAutoBreak()

func (*Image) SetMargin 

func (image *Image) SetMargin(margin core.Scope) *Image

type MarkdownText 

type MarkdownText struct {
	// contains filtered or unexported fields
}

func NewMarkdownText 

func NewMarkdownText(pdf *core.Report, x float64, fonts map[string]string) (*MarkdownText, error)

func (*MarkdownText) GenerateAtomicCell 

func (mt *MarkdownText) GenerateAtomicCell() (err error)

func (*MarkdownText) SetTokens 

func (mt *MarkdownText) SetTokens(tokens []Token)

type MdBlockQuote 

type MdBlockQuote struct {
	// contains filtered or unexported fields
}

func (*MdBlockQuote) GenerateAtomicCell 

func (a *MdBlockQuote) GenerateAtomicCell() (pagebreak, over bool, err error)

func (*MdBlockQuote) GetType 

func (a *MdBlockQuote) GetType() string

func (*MdBlockQuote) SetText 

func (a *MdBlockQuote) SetText(interface{}, ...string)

func (*MdBlockQuote) SetToken 

func (b *MdBlockQuote) SetToken(t Token) error

type MdHeader 

type MdHeader struct {
	// contains filtered or unexported fields
}

func (*MdHeader) CalFontSizeAndLineHeight 

func (h *MdHeader) CalFontSizeAndLineHeight(size int) (fontsize int, lineheight float64)

func (*MdHeader) GenerateAtomicCell 

func (h *MdHeader) GenerateAtomicCell() (pagebreak, over bool, err error)

func (*MdHeader) GetType 

func (a *MdHeader) GetType() string

func (*MdHeader) SetText 

func (a *MdHeader) SetText(interface{}, ...string)

func (*MdHeader) SetToken 

func (h *MdHeader) SetToken(t Token) (err error)

type MdImage 

type MdImage struct {
	// contains filtered or unexported fields
}

func (*MdImage) GenerateAtomicCell 

func (i *MdImage) GenerateAtomicCell() (pagebreak, over bool, err error)

func (*MdImage) GetType 

func (i *MdImage) GetType() string

func (*MdImage) SetText 

func (i *MdImage) SetText(_ interface{}, filename ...string)

type MdList 

type MdList struct {
	// contains filtered or unexported fields
}

func (*MdList) GenerateAtomicCell 

func (l *MdList) GenerateAtomicCell() (pagebreak, over bool, err error)

func (*MdList) GetType 

func (a *MdList) GetType() string

func (*MdList) SetText 

func (a *MdList) SetText(interface{}, ...string)

func (*MdList) SetToken 

func (l *MdList) SetToken(t Token) error

func (*MdList) String 

func (l *MdList) String() string

type MdMutiText 

type MdMutiText struct {
	// contains filtered or unexported fields
}

func (*MdMutiText) GenerateAtomicCell 

func (a *MdMutiText) GenerateAtomicCell() (pagebreak, over bool, err error)

func (*MdMutiText) GetType 

func (a *MdMutiText) GetType() string

func (*MdMutiText) SetText 

func (a *MdMutiText) SetText(interface{}, ...string)

func (*MdMutiText) SetToken 

func (m *MdMutiText) SetToken(t Token) error

type MdParagraph 

type MdParagraph struct {
	// contains filtered or unexported fields
}

func (*MdParagraph) GenerateAtomicCell 

func (p *MdParagraph) GenerateAtomicCell() (pagebreak, over bool, err error)

func (*MdParagraph) GetType 

func (a *MdParagraph) GetType() string

func (*MdParagraph) SetText 

func (a *MdParagraph) SetText(interface{}, ...string)

func (*MdParagraph) SetToken 

func (p *MdParagraph) SetToken(t Token) error

type MdSpace 

type MdSpace struct {
	// contains filtered or unexported fields
}

func (*MdSpace) GenerateAtomicCell 

func (c *MdSpace) GenerateAtomicCell() (pagebreak, over bool, err error)

func (*MdSpace) GetType 

func (a *MdSpace) GetType() string

func (*MdSpace) SetText 

func (a *MdSpace) SetText(interface{}, ...string)

func (*MdSpace) String 

func (c *MdSpace) String() string

type MdText 

type MdText struct {
	// contains filtered or unexported fields
}

Atomic component

func (*MdText) GenerateAtomicCell 

func (c *MdText) GenerateAtomicCell() (pagebreak, over bool, err error)

func (*MdText) GetSubText 

func (c *MdText) GetSubText(x1, x2 float64) (text string, width float64, newline bool)

GetSubText, Returns the content of a string of length x2-x1. This string is a substring of text. After return, the remain and length will change

func (*MdText) GetType 

func (a *MdText) GetType() string

func (*MdText) SetText 

func (c *MdText) SetText(font interface{}, texts ...string)

func (*MdText) String 

func (c *MdText) String() string

type Span 

type Span struct {
	// contains filtered or unexported fields
}

不会进行自动分页, 可以用于页眉, 页脚的内容.

func NewSpan 

func NewSpan(lineHeight, lineSpce float64, pdf *core.Report) *Span

func NewSpanWithWidth 

func NewSpanWithWidth(width float64, lineHeight, lineSpce float64, pdf *core.Report) *Span

func (*Span) Copy 

func (span *Span) Copy(content string) *Span

func (*Span) GenerateAtomicCell 

func (span *Span) GenerateAtomicCell() error

func (*Span) GetHeight 

func (span *Span) GetHeight() (height float64)

func (*Span) GetWidth 

func (span *Span) GetWidth() (width float64)

func (*Span) HorizontalCentered 

func (span *Span) HorizontalCentered() *Span

func (*Span) RightAlign 

func (span *Span) RightAlign() *Span

func (*Span) SetBorder 

func (span *Span) SetBorder(border core.Scope) *Span

func (*Span) SetContent 

func (span *Span) SetContent(content string) *Span

func (*Span) SetFont 

func (span *Span) SetFont(font core.Font) *Span

func (*Span) SetFontColor 

func (span *Span) SetFontColor(color string) *Span

func (*Span) SetFontWithColor 

func (span *Span) SetFontWithColor(font core.Font, color string) *Span

func (*Span) SetHeight 

func (span *Span) SetHeight(height float64) *Span

func (*Span) SetMarign 

func (span *Span) SetMarign(margin core.Scope) *Span

func (*Span) VerticalCentered 

func (span *Span) VerticalCentered() *Span

type Table 

type Table struct {
	// contains filtered or unexported fields
}

构建表格

func NewTable 

func NewTable(cols, rows int, width, lineHeight float64, pdf *core.Report) *Table

func (*Table) GenerateAtomicCell 

func (table *Table) GenerateAtomicCell() error

func (*Table) GetColWidth 

func (table *Table) GetColWidth(row, col int) float64

获取某列的宽度

func (*Table) NewCell 

func (table *Table) NewCell() *TableCell

创建长宽为1的单元格

func (*Table) NewCellByRange 

func (table *Table) NewCellByRange(w, h int) *TableCell

创建固定长度的单元格

func (*Table) SetLineHeight 

func (table *Table) SetLineHeight(lineHeight float64)

设置表的行高, 行高必须大于当前使用字体的行高

func (*Table) SetMargin 

func (table *Table) SetMargin(margin core.Scope)

设置表的外

type TableCell 

type TableCell struct {
	// contains filtered or unexported fields
}

func (*TableCell) SetElement 

func (cell *TableCell) SetElement(e core.Cell) *TableCell

type TextCell 

type TextCell struct {
	// contains filtered or unexported fields
}

func NewTextCell 

func NewTextCell(width, lineHeight, lineSpace float64, pdf *core.Report) *TextCell

func (*TextCell) Copy 

func (cell *TextCell) Copy(content string) *TextCell

func (*TextCell) GenerateAtomicCell 

func (cell *TextCell) GenerateAtomicCell(maxheight float64) (int, int, error)

先涂背景颜色, 然后在背景颜色的基础上写入内容

func (*TextCell) GetHeight 

func (cell *TextCell) GetHeight() float64

func (*TextCell) GetLastHeight 

func (cell *TextCell) GetLastHeight() float64

func (*TextCell) HorizontalCentered 

func (cell *TextCell) HorizontalCentered() *TextCell

func (*TextCell) RightAlign 

func (cell *TextCell) RightAlign() *TextCell

func (*TextCell) SetBackColor 

func (cell *TextCell) SetBackColor(color string) *TextCell

func (*TextCell) SetBorder 

func (cell *TextCell) SetBorder(border core.Scope) *TextCell

func (*TextCell) SetContent 

func (cell *TextCell) SetContent(s string) *TextCell

func (*TextCell) SetFont 

func (cell *TextCell) SetFont(font core.Font) *TextCell

func (*TextCell) SetFontColor 

func (cell *TextCell) SetFontColor(color string) *TextCell

func (*TextCell) SetFontWithColor 

func (cell *TextCell) SetFontWithColor(font core.Font, color string) *TextCell

func (*TextCell) TryGenerateAtomicCell 

func (cell *TextCell) TryGenerateAtomicCell(maxheight float64) (int, int)

func (*TextCell) VerticalCentered 

func (cell *TextCell) VerticalCentered() *TextCell

type Token 

type Token = lex.Token

Token is parse markdown result element

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