Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

[BUG] Not able to process large content in table cell #568

Open
ajay95573 opened this issue Sep 23, 2024 · 2 comments
Open

[BUG] Not able to process large content in table cell #568

ajay95573 opened this issue Sep 23, 2024 · 2 comments

Comments

@ajay95573
Copy link

Description

Whenever trying to add large content in table cell, it's getting stuck in pdf processing, draw() method not working.
The content i am trying to add is content := "Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" + "Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" + "Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" + "Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" + "Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" + "Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" + "Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" + "Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" + "Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" + "Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" + "Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" + "Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" + "Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet"

Expected Behavior

Above mentioned content should be inserted into the cell.

Actual Behavior

Steps to reproduce the behavior:

  1. create a table
  2. draw a cell.
  3. insert above mention content into single cell
  4. program would be stuck in draw() method

Attachments

`/*

  • This example showcases PDF tables features using unipdf's creator package.
  • The output is saved as unipdf-tables.pdf which illustrates some of the
  • features of the creator.
    */

package main

import (
"fmt"
"github.com/unidoc/unipdf/v3/common/license"
"github.com/unidoc/unipdf/v3/contentstream/draw"
"github.com/unidoc/unipdf/v3/creator"
"github.com/unidoc/unipdf/v3/model"
"log"
"net/http"
)

func init() {
// Make sure to load your metered License API key prior to using the library.
// If you need a key, you can sign up and create a free one at https://cloud.unidoc.io
err := license.SetMeteredKey(ba01d501fa945e7537275af003ab159a8c61af4ac0f265d4a4ec424c9df29bc7)
if err != nil {
panic(err)
}
}
func main() {
// Serve the PDF via HTTP
http.HandleFunc("/generate-pdf", PDFHandler)

// Start the server
log.Println("Starting server on :8080")
err := http.ListenAndServe(":8080", nil)
if err != nil {
	log.Fatalf("Error starting server: %v", err)
}

}

func PDFHandler(w http.ResponseWriter, r *http.Request) {
// Create report fonts.
font, err := model.NewStandard14Font("Helvetica")
if err != nil {
log.Fatal(err)
}

fontBold, err := model.NewStandard14Font("Helvetica-Bold")
if err != nil {
	log.Fatal(err)
}

c := creator.New()
c.SetPageMargins(50, 50, 50, 50)

// Generate front page.
drawFrontPage(c, font, fontBold)

// Generate footer for pages.
drawFooter(c, font, fontBold)

// Customize table of contents style.
customizeTOC(c, font, fontBold)

// Generate basic usage chapter.
if err := basicUsage(c, font, fontBold); err != nil {
	log.Fatal(err)
}

// Generate styling content chapter.
if err := stylingContent(c, font, fontBold); err != nil {
	log.Fatal(err)
}

// Generate advanced usage chapter.
if err := advancedUsage(c, font, fontBold); err != nil {
	log.Fatal(err)
}

// Write to output file.
//if err := c.WriteToFile("unipdf-tables.pdf"); err != nil {
//	log.Fatal(err)
//}
w.Header().Set("Content-Type", "application/pdf")
w.Header().Set("Content-Disposition", "inline; filename=multipage_table.pdf")
//w.Header().Set("Content-Length", fmt.Sprintf("%d", len(pdfBytes)))
c.Write(w)

// Set headers

// Write PDF bytes to response

}

func drawFrontPage(c *creator.Creator, font, fontBold *model.PdfFont) {
c.CreateFrontPage(func(args creator.FrontpageFunctionArgs) {
p := c.NewStyledParagraph()
p.SetMargins(0, 0, 300, 0)
p.SetTextAlignment(creator.TextAlignmentCenter)

	chunk := p.Append("UniPDF")
	chunk.Style.Font = font
	chunk.Style.FontSize = 56
	chunk.Style.Color = creator.ColorRGBFrom8bit(56, 68, 77)

	chunk = p.Append("\n")

	chunk = p.Append("Table features")
	chunk.Style.Font = fontBold
	chunk.Style.FontSize = 40
	chunk.Style.Color = creator.ColorRGBFrom8bit(45, 148, 215)

	c.Draw(p)
})

}

func drawFooter(c *creator.Creator, font, fontBold *model.PdfFont) {
c.DrawFooter(func(block *creator.Block, args creator.FooterFunctionArgs) {
p := c.NewStyledParagraph()
p.SetTextAlignment(creator.TextAlignmentCenter)

	chunk := p.Append(fmt.Sprintf("Page %d of %d", args.PageNum, args.TotalPages))
	chunk.Style.Font = font
	chunk.Style.FontSize = 8
	chunk.Style.Color = creator.ColorRGBFrom8bit(63, 68, 76)

	block.Draw(p)
})

}

func customizeTOC(c *creator.Creator, font, fontBold *model.PdfFont) {
// Enable automatic table of contents generation.
c.AddTOC = true

// Customize table of contents heading and its style.
toc := c.TOC()
toc.Heading().SetMargins(0, 0, 50, 0)

hstyle := c.NewTextStyle()
hstyle.Color = creator.ColorRGBFromArithmetic(0.2, 0.2, 0.2)
hstyle.Font = fontBold
hstyle.FontSize = 28
toc.SetHeading("Table of Contents", hstyle)

// Customize the style of the lines of the table of contents.
lstyle := c.NewTextStyle()
lstyle.Font = font
lstyle.FontSize = 14
toc.SetLineStyle(lstyle)

}

func basicUsage(c *creator.Creator, font, fontBold *model.PdfFont) error {
// Create chapter.
ch := c.NewChapter("Basic usage")
ch.SetMargins(0, 0, 50, 0)
ch.GetHeading().SetFont(font)
ch.GetHeading().SetFontSize(18)
ch.GetHeading().SetColor(creator.ColorRGBFrom8bit(72, 86, 95))

// Draw subchapters.
contentAlignH(c, ch, font, fontBold)
contentAlignV(c, ch, font, fontBold)
contentWrapping(c, ch, font, fontBold)

// Draw chapter.
if err := c.Draw(ch); err != nil {
	return err
}

return nil

}

func contentAlignH(c *creator.Creator, ch *creator.Chapter, font, fontBold *model.PdfFont) {
// Create subchapter.
sc := ch.NewSubchapter("Content horizontal alignment")
sc.SetMargins(0, 0, 30, 0)
sc.GetHeading().SetFont(font)
sc.GetHeading().SetFontSize(13)
sc.GetHeading().SetColor(creator.ColorRGBFrom8bit(72, 86, 95))

// Create subchapter description.
desc := c.NewStyledParagraph()
desc.SetMargins(0, 0, 10, 0)
desc.Append("Cell content can be aligned horizontally left, right or it can be centered.")

sc.Add(desc)

// Create table.
table := c.NewTable(3)
table.SetMargins(0, 0, 10, 0)

drawCell := func(text string, font *model.PdfFont, align creator.CellHorizontalAlignment) {
	p := c.NewStyledParagraph()
	p.Append(text).Style.Font = font

	cell := table.NewCell()
	cell.SetBorder(creator.CellBorderSideAll, creator.CellBorderStyleSingle, 1)
	cell.SetHorizontalAlignment(align)
	cell.SetContent(p)
}

// Draw table header.
drawCell("Align left", fontBold, creator.CellHorizontalAlignmentLeft)
drawCell("Align center", fontBold, creator.CellHorizontalAlignmentCenter)
drawCell("Align right", fontBold, creator.CellHorizontalAlignmentRight)

// Draw table content.
for i := 0; i < 5; i++ {
	num := i + 1

	drawCell(fmt.Sprintf("Product #%d", num), font, creator.CellHorizontalAlignmentLeft)
	drawCell(fmt.Sprintf("Description #%d", num), font, creator.CellHorizontalAlignmentCenter)
	drawCell(fmt.Sprintf("$%d", num*10), font, creator.CellHorizontalAlignmentRight)
}

sc.Add(table)

}

func contentAlignV(c *creator.Creator, ch *creator.Chapter, font, fontBold *model.PdfFont) {
// Create subchapter.
sc := ch.NewSubchapter("Content vertical alignment")
sc.SetMargins(0, 0, 30, 0)
sc.GetHeading().SetFont(font)
sc.GetHeading().SetFontSize(13)
sc.GetHeading().SetColor(creator.ColorRGBFrom8bit(72, 86, 95))

// Create subchapter description.
desc := c.NewStyledParagraph()
desc.SetMargins(0, 0, 10, 0)
desc.Append("Cell content can be positioned vertically at the top, bottom or in the middle of the cell.")

sc.Add(desc)

// Create table.
table := c.NewTable(3)
table.SetMargins(0, 0, 10, 0)

drawCell := func(text string, font *model.PdfFont, fontSize float64, align creator.CellVerticalAlignment) {
	p := c.NewStyledParagraph()
	chunk := p.Append(text)
	chunk.Style.Font = font
	chunk.Style.FontSize = fontSize

	cell := table.NewCell()
	cell.SetBorder(creator.CellBorderSideAll, creator.CellBorderStyleSingle, 1)
	cell.SetVerticalAlignment(align)
	cell.SetHorizontalAlignment(creator.CellHorizontalAlignmentCenter)
	cell.SetContent(p)
}

// Draw table header.
drawCell("Align top", fontBold, 10, creator.CellVerticalAlignmentMiddle)
drawCell("Align bottom", fontBold, 10, creator.CellVerticalAlignmentMiddle)
drawCell("Align middle", fontBold, 10, creator.CellVerticalAlignmentMiddle)

// Draw table content.
for i := 0; i < 5; i++ {
	num := i + 1
	fontSize := float64(num) * 2

	drawCell(fmt.Sprintf("Product #%d", num), font, fontSize, creator.CellVerticalAlignmentTop)
	drawCell(fmt.Sprintf("$%d", num*10), font, fontSize, creator.CellVerticalAlignmentBottom)
	drawCell(fmt.Sprintf("Description #%d", num), font, fontSize, creator.CellVerticalAlignmentMiddle)
}

sc.Add(table)

}

func contentWrapping(c *creator.Creator, ch *creator.Chapter, font, fontBold *model.PdfFont) {
// Create subchapter.
sc := ch.NewSubchapter("Content wrapping")
sc.SetMargins(0, 0, 30, 0)
sc.GetHeading().SetFont(font)
sc.GetHeading().SetFontSize(13)
sc.GetHeading().SetColor(creator.ColorRGBFrom8bit(72, 86, 95))

// Create subchapter description.
desc := c.NewStyledParagraph()
desc.SetMargins(0, 0, 10, 0)
desc.Append("Cell text content is automatically broken into lines, depeding on the cell size.")

sc.Add(desc)

// Create table.
table := c.NewTable(4)
table.SetColumnWidths(0.25, 0.2, 0.25, 0.3)
table.SetMargins(0, 0, 10, 0)

drawCell := func(text string, font *model.PdfFont, align creator.TextAlignment) {
	p := c.NewStyledParagraph()
	p.SetTextAlignment(align)
	p.SetMargins(2, 2, 0, 0)
	p.Append(text).Style.Font = font

	cell := table.NewCell()
	cell.SetBorder(creator.CellBorderSideAll, creator.CellBorderStyleSingle, 1)
	cell.SetContent(p)
	cell.SetIndent(0)
}

// Draw table header.
drawCell("Align left", fontBold, creator.TextAlignmentLeft)
drawCell("Align center", fontBold, creator.TextAlignmentCenter)
drawCell("Align right", fontBold, creator.TextAlignmentRight)
drawCell("Align justify", fontBold, creator.TextAlignmentCenter)

// Draw table content.
content := "Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
	"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
	"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
	"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
	"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
	"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
	"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
	"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
	"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
	"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
	"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
	"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
	"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet"

drawCell(content, font, creator.TextAlignmentLeft)
drawCell(content, font, creator.TextAlignmentCenter)
drawCell(content, font, creator.TextAlignmentRight)
drawCell(content, font, creator.TextAlignmentJustify)

drawCell = func(text string, font *model.PdfFont, align creator.TextAlignment) {
	p := c.NewStyledParagraph()
	p.SetTextAlignment(align)
	p.SetMargins(2, 2, 0, 0)
	p.Append(text).Style.Font = font

	cell := table.NewCell()
	cell.SetBorder(creator.CellBorderSideAll, creator.CellBorderStyleSingle, 1)
	cell.SetContent(p)
	cell.SetIndent(0)
}

//// Draw table header.
//drawCell("Align left", fontBold, creator.TextAlignmentLeft)
//drawCell("Align center", fontBold, creator.TextAlignmentCenter)
//drawCell("Align right", fontBold, creator.TextAlignmentRight)
//drawCell("Align justify", fontBold, creator.TextAlignmentCenter)

// Draw table content.
content = "Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet"

drawCell(content, font, creator.TextAlignmentLeft)
drawCell(content, font, creator.TextAlignmentLeft)
drawCell(content, font, creator.TextAlignmentLeft)
drawCell(content, font, creator.TextAlignmentLeft)
sc.Add(table)

}

func stylingContent(c *creator.Creator, font, fontBold *model.PdfFont) error {
c.NewPage()

// Create chapter.
ch := c.NewChapter("Styling content")
ch.SetMargins(0, 0, 50, 0)
ch.GetHeading().SetFont(font)
ch.GetHeading().SetFontSize(18)
ch.GetHeading().SetColor(creator.ColorRGBFrom8bit(72, 86, 95))

// Draw subchapters.
contentBorders(c, ch, font, fontBold)
contentBackground(c, ch, font, fontBold)

// Draw chapter.
if err := c.Draw(ch); err != nil {
	return err
}

return nil

}

func contentBorders(c *creator.Creator, ch *creator.Chapter, font, fontBold *model.PdfFont) {
// Create subchapter.
sc := ch.NewSubchapter("Cell borders")
sc.SetMargins(0, 0, 30, 0)
sc.GetHeading().SetFont(font)
sc.GetHeading().SetFontSize(13)
sc.GetHeading().SetColor(creator.ColorRGBFrom8bit(72, 86, 95))

// Create subchapter description.
desc := c.NewStyledParagraph()
desc.SetMargins(0, 0, 10, 0)
desc.Append("Customizable cell border properties:\n\n")
desc.Append("\u2022 Border side: left, right, top, bottom, all\n")
desc.Append("\u2022 Border style: single or double\n")
desc.Append("\u2022 Border line style: solid or dashed\n")
desc.Append("\u2022 Border color\n")
desc.Append("\u2022 Border width\n")

sc.Add(desc)

// Create table.
table := c.NewTable(2)
table.SetMargins(0, 0, 10, 0)

drawCell := func(text string, font *model.PdfFont, borderStyle creator.CellBorderStyle, borderSide creator.CellBorderSide, borderWidth float64, borderColor creator.Color, lineStyle draw.LineStyle) {
	p := c.NewStyledParagraph()
	chunk := p.Append(text)
	chunk.Style.Font = font

	cell := table.NewCell()
	cell.SetBorder(borderSide, borderStyle, borderWidth)
	cell.SetBorderColor(borderColor)
	cell.SetBorderLineStyle(lineStyle)
	cell.SetHorizontalAlignment(creator.CellHorizontalAlignmentCenter)
	cell.SetContent(p)
}

// Draw table header.
drawCell("Border right single width 2", fontBold, creator.CellBorderStyleSingle, creator.CellBorderSideRight, 2, creator.ColorBlack, draw.LineStyleSolid)
drawCell("Border right double", fontBold, creator.CellBorderStyleDouble, creator.CellBorderSideRight, 1, creator.ColorBlack, draw.LineStyleSolid)

// Draw table content.
drawCell("Border top single width 2", fontBold, creator.CellBorderStyleSingle, creator.CellBorderSideTop, 2, creator.ColorBlack, draw.LineStyleSolid)
drawCell("Border bottom single width 2", fontBold, creator.CellBorderStyleSingle, creator.CellBorderSideBottom, 2, creator.ColorBlack, draw.LineStyleSolid)

drawCell("Border all double", fontBold, creator.CellBorderStyleDouble, creator.CellBorderSideAll, 1, creator.ColorBlack, draw.LineStyleSolid)
drawCell("No border", fontBold, creator.CellBorderStyleSingle, creator.CellBorderSideAll, 0, creator.ColorBlack, draw.LineStyleSolid)

drawCell("Border bottom single green", fontBold, creator.CellBorderStyleSingle, creator.CellBorderSideBottom, 1, creator.ColorGreen, draw.LineStyleSolid)
drawCell("Border top double red", fontBold, creator.CellBorderStyleDouble, creator.CellBorderSideTop, 1, creator.ColorRed, draw.LineStyleSolid)

drawCell("Border all single yellow", fontBold, creator.CellBorderStyleSingle, creator.CellBorderSideAll, 1, creator.ColorYellow, draw.LineStyleSolid)
drawCell("Border right double dashed", fontBold, creator.CellBorderStyleDouble, creator.CellBorderSideRight, 1, creator.ColorBlack, draw.LineStyleDashed)

drawCell("Border bottom double solid", fontBold, creator.CellBorderStyleDouble, creator.CellBorderSideBottom, 1, creator.ColorBlack, draw.LineStyleSolid)
drawCell("Border bottom double dashed green", fontBold, creator.CellBorderStyleDouble, creator.CellBorderSideBottom, 1, creator.ColorGreen, draw.LineStyleDashed)

drawCell("Border left double blue", fontBold, creator.CellBorderStyleDouble, creator.CellBorderSideLeft, 1, creator.ColorBlue, draw.LineStyleSolid)
drawCell("Border right double red", fontBold, creator.CellBorderStyleDouble, creator.CellBorderSideRight, 1, creator.ColorRed, draw.LineStyleSolid)

drawCell("Border all double yellow", fontBold, creator.CellBorderStyleDouble, creator.CellBorderSideAll, 1, creator.ColorYellow, draw.LineStyleSolid)
drawCell("Border all double dashed blue", fontBold, creator.CellBorderStyleDouble, creator.CellBorderSideAll, 1, creator.ColorBlue, draw.LineStyleDashed)

sc.Add(table)

}

func contentBackground(c *creator.Creator, ch *creator.Chapter, font, fontBold *model.PdfFont) {
// Create subchapter.
sc := ch.NewSubchapter("Cell background")
sc.SetMargins(0, 0, 30, 0)
sc.GetHeading().SetFont(font)
sc.GetHeading().SetFontSize(13)
sc.GetHeading().SetColor(creator.ColorRGBFrom8bit(72, 86, 95))

// Create subchapter description.
desc := c.NewStyledParagraph()
desc.SetMargins(0, 0, 10, 0)
desc.Append("The background color of the cells is also customizable.")

sc.Add(desc)

// Create table.
table := c.NewTable(4)
table.SetMargins(0, 0, 10, 0)

drawCell := func(text string, font *model.PdfFont, bgColor creator.Color) {
	p := c.NewStyledParagraph()
	p.SetMargins(2, 2, 0, 0)
	chunk := p.Append(text)
	chunk.Style.Font = font
	chunk.Style.Color = creator.ColorWhite

	cell := table.NewCell()
	cell.SetBorder(creator.CellBorderSideAll, creator.CellBorderStyleSingle, 1)
	cell.SetBackgroundColor(bgColor)
	cell.SetContent(p)
	cell.SetHorizontalAlignment(creator.CellHorizontalAlignmentCenter)
	cell.SetIndent(0)
}

// Draw table content.
for i := 0; i < 15; i++ {
	drawCell("Content", fontBold, creator.ColorRGBFrom8bit(byte(i*20), byte(i*7), byte(i*4)))
	drawCell("Content", fontBold, creator.ColorRGBFrom8bit(byte(i*10), byte(i*20), byte(i*4)))
	drawCell("Content", fontBold, creator.ColorRGBFrom8bit(byte(i*15), byte(i*6), byte(i*9)))
	drawCell("Content", fontBold, creator.ColorRGBFrom8bit(byte(i*6), byte(i*7), byte(i*25)))
}

sc.Add(table)

}

func advancedUsage(c *creator.Creator, font, fontBold *model.PdfFont) error {
c.NewPage()

// Create chapter.
ch := c.NewChapter("Advanced usage")
ch.SetMargins(0, 0, 50, 0)
ch.GetHeading().SetFont(font)
ch.GetHeading().SetFontSize(18)
ch.GetHeading().SetColor(creator.ColorRGBFrom8bit(72, 86, 95))

// Draw subchapters.
columnSpan(c, ch, font, fontBold)
tableHeaders(c, ch, font, fontBold)
subtables(c, ch, font, fontBold)

// Draw chapter.
if err := c.Draw(ch); err != nil {
	return err
}

return nil

}

func columnSpan(c *creator.Creator, ch *creator.Chapter, font, fontBold *model.PdfFont) {
// Create subchapter.
sc := ch.NewSubchapter("Column span")
sc.SetMargins(0, 0, 30, 0)
sc.GetHeading().SetFont(font)
sc.GetHeading().SetFontSize(13)
sc.GetHeading().SetColor(creator.ColorRGBFrom8bit(72, 86, 95))

// Create subchapter description.
desc := c.NewStyledParagraph()
desc.SetMargins(0, 0, 10, 0)
desc.Append("Table content can be configured to span a specified number of cells.")

sc.Add(desc)

// Create table.
table := c.NewTable(5)
table.SetMargins(0, 0, 10, 0)

drawCell := func(text string, font *model.PdfFont, colspan int, color, bgColor creator.Color) {
	p := c.NewStyledParagraph()
	p.SetMargins(2, 2, 0, 0)
	chunk := p.Append(text)
	chunk.Style.Font = font
	chunk.Style.Color = color

	cell := table.MultiColCell(colspan)
	cell.SetBorder(creator.CellBorderSideAll, creator.CellBorderStyleSingle, 1)
	cell.SetBackgroundColor(bgColor)
	cell.SetContent(p)
	cell.SetHorizontalAlignment(creator.CellHorizontalAlignmentCenter)
	cell.SetIndent(0)
}

// Draw table content.

// Colspan 1 + 1 + 1 + 1 + 1.
drawCell("1", fontBold, 1, creator.ColorWhite, creator.ColorBlue)
drawCell("1", fontBold, 1, creator.ColorWhite, creator.ColorBlue)
drawCell("1", fontBold, 1, creator.ColorWhite, creator.ColorBlue)
drawCell("1", fontBold, 1, creator.ColorWhite, creator.ColorBlue)
drawCell("1", fontBold, 1, creator.ColorWhite, creator.ColorBlue)

// Colspan 2 + 3.
drawCell("2", fontBold, 2, creator.ColorWhite, creator.ColorRed)
drawCell("3", fontBold, 3, creator.ColorWhite, creator.ColorRed)

// Colspan 4 + 1.
drawCell("4", fontBold, 4, creator.ColorBlack, creator.ColorGreen)
drawCell("1", fontBold, 1, creator.ColorBlack, creator.ColorGreen)

// Colspan 2 + 2 + 1.
drawCell("2", fontBold, 2, creator.ColorBlack, creator.ColorYellow)
drawCell("2", fontBold, 2, creator.ColorBlack, creator.ColorYellow)
drawCell("1", fontBold, 1, creator.ColorBlack, creator.ColorYellow)

// Colspan 5.
drawCell("5", fontBold, 5, creator.ColorWhite, creator.ColorBlack)

// Colspan 1 + 2 + 1 + 1.
drawCell("1", fontBold, 1, creator.ColorBlack, creator.ColorYellow)
drawCell("2", fontBold, 2, creator.ColorBlack, creator.ColorYellow)
drawCell("1", fontBold, 1, creator.ColorBlack, creator.ColorYellow)
drawCell("1", fontBold, 1, creator.ColorBlack, creator.ColorYellow)

// Colspan 1 + 4.
drawCell("1", fontBold, 1, creator.ColorBlack, creator.ColorGreen)
drawCell("4", fontBold, 4, creator.ColorBlack, creator.ColorGreen)

// Colspan 3 + 2.
drawCell("3", fontBold, 3, creator.ColorWhite, creator.ColorRed)
drawCell("2", fontBold, 2, creator.ColorWhite, creator.ColorRed)

// Colspan 1 + 2 + 2.
drawCell("1", fontBold, 2, creator.ColorBlack, creator.ColorYellow)
drawCell("2", fontBold, 2, creator.ColorBlack, creator.ColorYellow)
drawCell("2", fontBold, 1, creator.ColorBlack, creator.ColorYellow)

// Colspan 1 + 1 + 1 + 2.
drawCell("2", fontBold, 1, creator.ColorWhite, creator.ColorBlue)
drawCell("1", fontBold, 1, creator.ColorWhite, creator.ColorBlue)
drawCell("1", fontBold, 1, creator.ColorWhite, creator.ColorBlue)
drawCell("2", fontBold, 2, creator.ColorWhite, creator.ColorBlue)

sc.Add(table)

}

func tableHeaders(c *creator.Creator, ch *creator.Chapter, font, fontBold *model.PdfFont) error {
// Create subchapter.
sc := ch.NewSubchapter("Headers")
sc.SetMargins(0, 0, 30, 0)
sc.GetHeading().SetFont(font)
sc.GetHeading().SetFontSize(13)
sc.GetHeading().SetColor(creator.ColorRGBFrom8bit(72, 86, 95))

// Create subchapter description.
desc := c.NewStyledParagraph()
desc.SetMargins(0, 0, 10, 0)
desc.Append("Table rows can be configured to become headers which are automatically repeated on every new page the table spans. This example also showcases the usage of images inside table cells.")

sc.Add(desc)

// Load table image.
img, err := c.NewImageFromFile("./unidoc-logo.png")
if err != nil {
	return err
}
img.SetMargins(2, 2, 2, 2)
img.ScaleToWidth(30)

// Create table.
table := c.NewTable(4)
table.SetColumnWidths(0.1, 0.3, 0.4, 0.2)
table.SetMargins(0, 0, 10, 0)

drawCell := func(text string, font *model.PdfFont, align creator.CellHorizontalAlignment, color, bgColor creator.Color, colspan int) {
	p := c.NewStyledParagraph()
	chunk := p.Append(text)
	chunk.Style.Font = font
	chunk.Style.Color = color

	cell := table.MultiColCell(colspan)
	cell.SetBackgroundColor(bgColor)
	cell.SetBorder(creator.CellBorderSideAll, creator.CellBorderStyleSingle, 1)
	cell.SetHorizontalAlignment(align)
	cell.SetContent(p)
}

drawCell("Header", fontBold, creator.CellHorizontalAlignmentCenter, creator.ColorWhite, creator.ColorBlue, 4)
drawCell("This is the subheader", fontBold, creator.CellHorizontalAlignmentCenter, creator.ColorBlack, creator.ColorWhite, 4)
table.SetHeaderRows(1, 2)

// Draw table content.
for i := 0; i < 62; i++ {
	num := i + 1

	color := creator.ColorBlack
	bgColor := creator.ColorWhite
	if num%2 == 0 {
		color = creator.ColorRGBFromHex("#fefefe")
		bgColor = creator.ColorRGBFromHex("#999")
	}

	// Draw image cell.
	cell := table.NewCell()
	cell.SetBorder(creator.CellBorderSideAll, creator.CellBorderStyleSingle, 1)
	cell.SetHorizontalAlignment(creator.CellHorizontalAlignmentCenter)
	cell.SetContent(img)

	drawCell(fmt.Sprintf("Product #%d", num), font, creator.CellHorizontalAlignmentLeft, color, bgColor, 1)
	drawCell(fmt.Sprintf("Description #%d", num), font, creator.CellHorizontalAlignmentCenter, color, bgColor, 1)
	drawCell(fmt.Sprintf("$%d", num*10), font, creator.CellHorizontalAlignmentRight, color, bgColor, 1)
}

sc.Add(table)
return nil

}

func subtables(c *creator.Creator, ch *creator.Chapter, font, fontBold *model.PdfFont) {
// Create subchapter.
sc := ch.NewSubchapter("Subtables")
sc.SetMargins(0, 0, 30, 0)
sc.GetHeading().SetFont(font)
sc.GetHeading().SetFontSize(13)
sc.GetHeading().SetColor(creator.ColorRGBFrom8bit(72, 86, 95))

// Create subchapter description.
desc := c.NewStyledParagraph()
desc.SetMargins(0, 0, 10, 0)
desc.Append("Large tables can be tedious to construct. In order to make the process more manageable, the table component allows building tables from subtables. If subtables do not fit in the current configuration of the table, the table is automatically expanded.")

sc.Add(desc)

// Create table.
table := c.NewTable(6)
table.SetMargins(0, 0, 10, 0)

headerColor := creator.ColorRGBFrom8bit(255, 255, 0)
footerColor := creator.ColorRGBFrom8bit(0, 255, 0)

generateSubtable := func(rows, cols, index int, rightBorder bool) *creator.Table {
	subtable := c.NewTable(cols)

	// Add header row.
	sp := c.NewStyledParagraph()
	sp.Append(fmt.Sprintf("Header of subtable %d", index)).Style.Font = font

	cell := subtable.MultiColCell(cols)
	cell.SetContent(sp)
	cell.SetBorder(creator.CellBorderSideAll, creator.CellBorderStyleSingle, 1)
	cell.SetHorizontalAlignment(creator.CellHorizontalAlignmentCenter)
	cell.SetVerticalAlignment(creator.CellVerticalAlignmentMiddle)
	cell.SetBackgroundColor(headerColor)

	for i := 0; i < rows; i++ {
		for j := 0; j < cols; j++ {
			sp = c.NewStyledParagraph()
			sp.Append(fmt.Sprintf("%d-%d", i+1, j+1))
			cell = subtable.NewCell()
			cell.SetContent(sp)

			if j == 0 {
				cell.SetBorder(creator.CellBorderSideLeft, creator.CellBorderStyleSingle, 1)
			}
			if rightBorder && j == cols-1 {
				cell.SetBorder(creator.CellBorderSideRight, creator.CellBorderStyleSingle, 1)
			}
		}
	}

	// Add footer row.
	sp = c.NewStyledParagraph()
	sp.Append(fmt.Sprintf("Footer of subtable %d", index))

	cell = subtable.MultiColCell(cols)
	cell.SetContent(sp)
	cell.SetBorder(creator.CellBorderSideAll, creator.CellBorderStyleSingle, 1)
	cell.SetHorizontalAlignment(creator.CellHorizontalAlignmentCenter)
	cell.SetVerticalAlignment(creator.CellVerticalAlignmentMiddle)
	cell.SetBackgroundColor(footerColor)

	subtable.SetRowHeight(1, 30)
	subtable.SetRowHeight(subtable.Rows(), 40)
	return subtable
}

// Add subtable 1 on row 1, col 1 (4x4)
table.AddSubtable(1, 1, generateSubtable(4, 4, 1, false))

// Add subtable 2 on row 1, col 5 (4x4)
// Table will be expanded to 8 columns because the subtable does not fit.
table.AddSubtable(1, 5, generateSubtable(4, 4, 2, true))

// Add subtable 3 on row 7, col 1 (4x4)
table.AddSubtable(7, 1, generateSubtable(4, 4, 3, false))

// Add subtable 4 on row 7, col 5 (4x4)
table.AddSubtable(7, 5, generateSubtable(4, 4, 4, true))

// Add subtable 5 on row 13, col 3 (4x4)
table.AddSubtable(13, 3, generateSubtable(4, 4, 5, true))

// Add subtable 6 on row 13, col 1 (3x2)
table.AddSubtable(13, 1, generateSubtable(3, 2, 6, false))

// Add subtable 7 on row 13, col 7 (3x2)
table.AddSubtable(13, 7, generateSubtable(3, 2, 7, true))

// Add subtable 8 on row 18, col 1 (3x2)
table.AddSubtable(18, 1, generateSubtable(3, 2, 8, false))

// Add subtable 9 on row 19, col 3 (2x4)
table.AddSubtable(19, 3, generateSubtable(2, 4, 9, true))

// Add subtable 10 on row 18, col 7 (3x2)
table.AddSubtable(18, 7, generateSubtable(3, 2, 10, true))

sc.Add(table)

}
`
@github-actions GitHub Actions
Copy link

Welcome! Thanks for posting your first issue. The way things work here is that while customer issues are prioritized, other issues go into our backlog where they are assessed and fitted into the roadmap when suitable. If you need to get this done, consider buying a license which also enables you to use it in your commercial products. More information can be found on https://unidoc.io/

@unidoc unidoc deleted a comment Oct 24, 2024
@sampila
Copy link
Collaborator

sampila commented Oct 28, 2024

Hi @ajay95573,

Currently we are trying to fix the issue with that, currently to fix the issue you need to set the table.EnableRowWrap(true) to make content splits automatically into several pages when available spaces not fit the cell content.

Here's the modified code for the contentWrapping part

...
func contentWrapping(c *creator.Creator, ch *creator.Chapter, font, fontBold *model.PdfFont) {
	// Create subchapter.
	sc := ch.NewSubchapter("Content wrapping")
	sc.SetMargins(0, 0, 30, 0)
	sc.GetHeading().SetFont(font)
	sc.GetHeading().SetFontSize(13)
	sc.GetHeading().SetColor(creator.ColorRGBFrom8bit(72, 86, 95))

	// Create subchapter description.
	desc := c.NewStyledParagraph()
	desc.SetMargins(0, 0, 10, 0)
	desc.Append("Cell text content is automatically broken into lines, depeding on the cell size.")

	sc.Add(desc)

	// Create table.
	table := c.NewTable(4)
	table.SetColumnWidths(0.25, 0.2, 0.25, 0.3)
	table.SetMargins(0, 0, 10, 0)

	drawCell := func(text string, font *model.PdfFont, align creator.TextAlignment) {
		fmt.Println("draw cell")
		p := c.NewStyledParagraph()
		p.SetTextAlignment(align)
		p.SetMargins(2, 2, 0, 0)
		p.Append(text).Style.Font = font

		cell := table.NewCell()
		cell.SetBorder(creator.CellBorderSideAll, creator.CellBorderStyleSingle, 1)
		cell.SetContent(p)
		cell.SetIndent(0)
	}

	// Draw table header.
	drawCell("Align left", fontBold, creator.TextAlignmentLeft)
	drawCell("Align center", fontBold, creator.TextAlignmentCenter)
	drawCell("Align right", fontBold, creator.TextAlignmentRight)
	drawCell("Align justify", fontBold, creator.TextAlignmentCenter)

	// Draw table content.
	content := "Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
		"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
		"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
		"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
		"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
		"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
		"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
		"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
		"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
		"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
		"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
		"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet" +
		"Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet"

	drawCell(content, font, creator.TextAlignmentLeft)
	drawCell(content, font, creator.TextAlignmentCenter)
	drawCell(content, font, creator.TextAlignmentRight)
	drawCell(content, font, creator.TextAlignmentJustify)

	drawCell = func(text string, font *model.PdfFont, align creator.TextAlignment) {
		p := c.NewStyledParagraph()
		p.SetTextAlignment(align)
		p.SetMargins(2, 2, 0, 0)
		p.Append(text).Style.Font = font

		cell := table.NewCell()
		cell.SetBorder(creator.CellBorderSideAll, creator.CellBorderStyleSingle, 1)
		cell.SetContent(p)
		cell.SetIndent(0)
	}

	// Draw table header.
	drawCell("Align left", fontBold, creator.TextAlignmentLeft)
	drawCell("Align center", fontBold, creator.TextAlignmentCenter)
	drawCell("Align right", fontBold, creator.TextAlignmentRight)
	drawCell("Align justify", fontBold, creator.TextAlignmentCenter)

	// Draw table content.
	content = "Maecenas <a href=\"https://www.w3.org/WAI/\">with a link</a> tempor nibh gravida nunc laoreet, ut rhoncus justo ultricies. Mauris nec purus sit amet"
	//
	drawCell(content, font, creator.TextAlignmentLeft)
	drawCell(content, font, creator.TextAlignmentLeft)
	drawCell(content, font, creator.TextAlignmentLeft)
	drawCell(content, font, creator.TextAlignmentLeft)
        
        // Enable row wrap.
	table.EnableRowWrap(true)

	sc.Add(table)
}
...

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
None yet
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
2 participants
@sampila @ajay95573