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Merge pull request #360 from adrg/creator-chapter-hierarchy
Creator chapter hierarchy
This commit is contained in:
Gunnsteinn Hall
GitHub
commit
0dc0219e8f
@ -17,14 +17,21 @@ import (
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// Chapter is used to arrange multiple drawables (paragraphs, images, etc) into a single section.
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// The concept is the same as a book or a report chapter.
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type Chapter struct {
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number int
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title string
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// The number of the chapter.
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number int
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// The title of the chapter.
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title string
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// The heading paragraph of the chapter.
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heading *Paragraph
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subchapters int
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// The content components of the chapter.
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contents []Drawable
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// The number of subchapters the chapter has.
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subchapters int
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// Show chapter numbering
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showNumbering bool
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@ -40,6 +47,9 @@ type Chapter struct {
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// Margins to be applied around the block when drawing on Page.
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margins margins
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// Reference to the parent chapter the current chapter belongs to.
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parent *Chapter
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// Reference to the TOC of the creator.
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toc *TOC
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@ -48,36 +58,53 @@ type Chapter struct {
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// The item of the chapter in the outline.
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outlineItem *model.OutlineItem
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// The level of the chapter in the chapters hierarchy.
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level uint
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}
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// newChapter creates a new chapter with the specified title as the heading.
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func newChapter(toc *TOC, outline *model.Outline, title string, number int, style TextStyle) *Chapter {
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p := newParagraph(fmt.Sprintf("%d. %s", number, title), style)
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p.SetFont(style.Font)
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p.SetFontSize(16)
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func newChapter(parent *Chapter, toc *TOC, outline *model.Outline, title string, number int, style TextStyle) *Chapter {
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var level uint = 1
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if parent != nil {
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level = parent.level + 1
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}
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return &Chapter{
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chapter := &Chapter{
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number: number,
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title: title,
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showNumbering: true,
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includeInTOC: true,
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parent: parent,
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toc: toc,
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outline: outline,
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heading: p,
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contents: []Drawable{},
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level: level,
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}
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p := newParagraph(chapter.headingText(), style)
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p.SetFont(style.Font)
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p.SetFontSize(style.FontSize)
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chapter.heading = p
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return chapter
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}
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// NewSubchapter creates a new child chapter with the specified title.
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func (chap *Chapter) NewSubchapter(title string) *Chapter {
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style := newTextStyle(chap.heading.textFont)
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style.FontSize = 14
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chap.subchapters++
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subchapter := newChapter(chap, chap.toc, chap.outline, title, chap.subchapters, style)
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chap.Add(subchapter)
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return subchapter
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}
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// SetShowNumbering sets a flag to indicate whether or not to show chapter numbers as part of title.
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func (chap *Chapter) SetShowNumbering(show bool) {
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if show {
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heading := fmt.Sprintf("%d. %s", chap.number, chap.title)
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chap.heading.SetText(heading)
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} else {
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heading := fmt.Sprintf("%s", chap.title)
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chap.heading.SetText(heading)
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}
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chap.showNumbering = show
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chap.heading.SetText(chap.headingText())
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}
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// SetIncludeInTOC sets a flag to indicate whether or not to include in tOC.
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@ -112,10 +139,7 @@ func (chap *Chapter) Add(d Drawable) error {
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}
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switch d.(type) {
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case *Chapter:
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common.Log.Debug("ERROR: Cannot add chapter to a chapter")
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return errors.New("type check error")
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case *Paragraph, *Image, *Block, *Subchapter, *Table, *PageBreak:
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case *Paragraph, *Image, *Block, *Table, *PageBreak, *Chapter:
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chap.contents = append(chap.contents, d)
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default:
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common.Log.Debug("Unsupported: %T", d)
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@ -125,6 +149,36 @@ func (chap *Chapter) Add(d Drawable) error {
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return nil
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}
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// headingNumber returns the chapter heading number based on the chapter
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// hierarchy and the showNumbering property.
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func (chap *Chapter) headingNumber() string {
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var chapNumber string
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if chap.showNumbering {
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if chap.number != 0 {
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chapNumber = strconv.Itoa(chap.number) + "."
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}
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if chap.parent != nil {
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parentChapNumber := chap.parent.headingNumber()
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if parentChapNumber != "" {
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chapNumber = parentChapNumber + chapNumber
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}
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}
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}
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return chapNumber
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}
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// headingText returns the chapter heading text content.
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func (chap *Chapter) headingText() string {
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heading := chap.title
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if chapNumber := chap.headingNumber(); chapNumber != "" {
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heading = fmt.Sprintf("%s %s", chapNumber, heading)
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}
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return heading
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}
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// GeneratePageBlocks generate the Page blocks. Multiple blocks are generated if the contents wrap
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// over multiple pages.
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func (chap *Chapter) GeneratePageBlocks(ctx DrawContext) ([]*Block, DrawContext, error) {
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@ -138,37 +192,25 @@ func (chap *Chapter) GeneratePageBlocks(ctx DrawContext) ([]*Block, DrawContext,
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ctx.Height -= chap.margins.top
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}
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origX := ctx.X
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origY := ctx.Y
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blocks, ctx, err := chap.heading.GeneratePageBlocks(ctx)
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blocks, c, err := chap.heading.GeneratePageBlocks(ctx)
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if err != nil {
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return blocks, ctx, err
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}
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if len(blocks) > 1 {
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ctx.Page++ // Did not fit, moved to new Page block.
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}
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ctx = c
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// Generate chapter title and number.
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chapTitle := chap.title
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var chapNumber string
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posX := ctx.X
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posY := ctx.Y - chap.heading.Height()
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page := int64(ctx.Page)
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if chap.showNumbering {
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if chap.number != 0 {
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chapNumber = strconv.Itoa(chap.number) + "."
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}
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}
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if chapNumber != "" {
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chapTitle = fmt.Sprintf("%s %s", chapNumber, chapTitle)
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}
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chapNumber := chap.headingNumber()
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chapTitle := chap.headingText()
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// Add to TOC.
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if chap.includeInTOC {
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line := chap.toc.Add(chapNumber, chap.title, strconv.FormatInt(page, 10), 1)
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line := chap.toc.Add(chapNumber, chap.title, strconv.FormatInt(page, 10), chap.level)
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if chap.toc.showLinks {
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line.SetLink(page, origX, origY)
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line.SetLink(page, posX, posY)
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}
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}
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@ -176,14 +218,19 @@ func (chap *Chapter) GeneratePageBlocks(ctx DrawContext) ([]*Block, DrawContext,
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if chap.outlineItem == nil {
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chap.outlineItem = model.NewOutlineItem(
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chapTitle,
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model.NewOutlineDest(page-1, origX, origY),
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model.NewOutlineDest(page-1, posX, posY),
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)
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chap.outline.Add(chap.outlineItem)
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if chap.parent != nil {
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chap.parent.outlineItem.Add(chap.outlineItem)
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} else {
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chap.outline.Add(chap.outlineItem)
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}
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} else {
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outlineDest := &chap.outlineItem.Dest
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outlineDest.Page = page - 1
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outlineDest.X = origX
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outlineDest.Y = origY
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outlineDest.X = posX
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outlineDest.Y = posY
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}
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for _, d := range chap.contents {
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@ -714,13 +714,10 @@ func (c *Creator) NewStyledTOCLine(number, title, page TextChunk, level uint, st
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// NewChapter creates a new chapter with the specified title as the heading.
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func (c *Creator) NewChapter(title string) *Chapter {
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c.chapters++
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return newChapter(c.toc, c.outline, title, c.chapters, c.NewTextStyle())
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}
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style := c.NewTextStyle()
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style.FontSize = 16
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// NewSubchapter creates a new Subchapter under Chapter ch with specified title.
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// All other parameters are set to their defaults.
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func (c *Creator) NewSubchapter(ch *Chapter, title string) *Subchapter {
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return newSubchapter(ch, title, c.NewTextStyle())
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return newChapter(nil, c.toc, c.outline, title, c.chapters, style)
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}
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// NewInvoice returns an instance of an empty invoice.
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@ -793,7 +793,7 @@ func TestSubchaptersSimple(t *testing.T) {
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// Add chapters.
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ch1 := c.NewChapter("Introduction")
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subchap1 := c.NewSubchapter(ch1, "The fundamentals of the mastery of the most genious experiment of all times in modern world history. The story of the maker and the maker bot and the genius cow.")
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subchap1 := ch1.NewSubchapter("The fundamentals of the mastery of the most genious experiment of all times in modern world history. The story of the maker and the maker bot and the genius cow.")
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subchap1.SetMargins(0, 0, 5, 0)
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//subCh1 := NewSubchapter(ch1, "Workflow")
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@ -809,19 +809,19 @@ func TestSubchaptersSimple(t *testing.T) {
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subchap1.Add(p)
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}
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subchap2 := c.NewSubchapter(ch1, "Mechanism")
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subchap2 := ch1.NewSubchapter("Mechanism")
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subchap2.SetMargins(0, 0, 5, 0)
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for j := 0; j < 1; j++ {
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subchap2.Add(p)
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}
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subchap3 := c.NewSubchapter(ch1, "Discussion")
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subchap3 := ch1.NewSubchapter("Discussion")
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subchap3.SetMargins(0, 0, 5, 0)
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for j := 0; j < 1; j++ {
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subchap3.Add(p)
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}
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subchap4 := c.NewSubchapter(ch1, "Conclusion")
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subchap4 := ch1.NewSubchapter("Conclusion")
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subchap4.SetMargins(0, 0, 5, 0)
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for j := 0; j < 1; j++ {
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subchap4.Add(p)
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@ -895,11 +895,9 @@ func TestSubchapters(t *testing.T) {
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// Add chapters.
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ch1 := c.NewChapter("Introduction")
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subchap1 := c.NewSubchapter(ch1, "The fundamentals")
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subchap1 := ch1.NewSubchapter("The fundamentals")
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subchap1.SetMargins(0, 0, 5, 0)
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//subCh1 := NewSubchapter(ch1, "Workflow")
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p := c.NewParagraph("Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt " +
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"ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut " +
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"aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore " +
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@ -911,19 +909,28 @@ func TestSubchapters(t *testing.T) {
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subchap1.Add(p)
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}
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subchap2 := c.NewSubchapter(ch1, "Mechanism")
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subchap2 := ch1.NewSubchapter("Mechanism")
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subchap2.SetMargins(0, 0, 5, 0)
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for j := 0; j < 15; j++ {
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subchap2.Add(p)
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}
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subchap3 := c.NewSubchapter(ch1, "Discussion")
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subchap3 := ch1.NewSubchapter("Discussion")
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subchap3.SetMargins(0, 0, 5, 0)
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for j := 0; j < 19; j++ {
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subchap3.Add(p)
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}
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subchap4 := c.NewSubchapter(ch1, "Conclusion")
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// Create multi-level subchapters.
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subchap := subchap3
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for i := 0; i < 5; i++ {
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subchap = subchap.NewSubchapter(fmt.Sprintf("Discussion %d", i+1))
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for j := 0; j < 5; j++ {
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subchap.Add(p)
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}
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}
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subchap4 := ch1.NewSubchapter("Conclusion")
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subchap4.SetMargins(0, 0, 5, 0)
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for j := 0; j < 23; j++ {
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subchap4.Add(p)
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@ -1808,7 +1815,7 @@ func TestTableInSubchapter(t *testing.T) {
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ch.GetHeading().SetFontSize(18)
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ch.GetHeading().SetColor(ColorRGBFrom8bit(72, 86, 95))
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sc := c.NewSubchapter(ch, "Issuer details")
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sc := ch.NewSubchapter("Issuer details")
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sc.SetMargins(0, 0, 5, 0)
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sc.GetHeading().SetFont(fontRegular)
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sc.GetHeading().SetFontSize(18)
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@ -1862,7 +1869,7 @@ func TestTableInSubchapter(t *testing.T) {
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ch.Add(issuerTable)
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sc = c.NewSubchapter(ch, "My Statement")
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sc = ch.NewSubchapter("My Statement")
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//sc.SetMargins(0, 0, 5, 0)
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sc.GetHeading().SetFont(fontRegular)
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sc.GetHeading().SetFontSize(18)
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@ -2381,7 +2388,7 @@ func TestCombineDuplicateDirectObjects(t *testing.T) {
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c.AddTOC = true
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ch1 := c.NewChapter("Introduction")
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subchap1 := c.NewSubchapter(ch1, "The fundamentals")
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subchap1 := ch1.NewSubchapter("The fundamentals")
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subchap1.SetMargins(0, 0, 5, 0)
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//subCh1 := NewSubchapter(ch1, "Workflow")
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@ -2398,19 +2405,19 @@ func TestCombineDuplicateDirectObjects(t *testing.T) {
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subchap1.Add(p)
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}
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subchap2 := c.NewSubchapter(ch1, "Mechanism")
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subchap2 := ch1.NewSubchapter("Mechanism")
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subchap2.SetMargins(0, 0, 5, 0)
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for j := 0; j < 3; j++ {
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subchap2.Add(p)
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}
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subchap3 := c.NewSubchapter(ch1, "Discussion")
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subchap3 := ch1.NewSubchapter("Discussion")
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subchap3.SetMargins(0, 0, 5, 0)
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for j := 0; j < 4; j++ {
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subchap3.Add(p)
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}
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subchap4 := c.NewSubchapter(ch1, "Conclusion")
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subchap4 := ch1.NewSubchapter("Conclusion")
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subchap4.SetMargins(0, 0, 5, 0)
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for j := 0; j < 3; j++ {
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subchap4.Add(p)
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@ -2588,7 +2595,7 @@ func TestCombineIdenticalIndirectObjects(t *testing.T) {
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c.AddTOC = true
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ch1 := c.NewChapter("Introduction")
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subchap1 := c.NewSubchapter(ch1, "The fundamentals")
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subchap1 := ch1.NewSubchapter("The fundamentals")
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subchap1.SetMargins(0, 0, 5, 0)
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//subCh1 := NewSubchapter(ch1, "Workflow")
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@ -2604,19 +2611,19 @@ func TestCombineIdenticalIndirectObjects(t *testing.T) {
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subchap1.Add(p)
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}
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subchap2 := c.NewSubchapter(ch1, "Mechanism")
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subchap2 := ch1.NewSubchapter("Mechanism")
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subchap2.SetMargins(0, 0, 5, 0)
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for j := 0; j < 15; j++ {
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subchap2.Add(p)
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}
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subchap3 := c.NewSubchapter(ch1, "Discussion")
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subchap3 := ch1.NewSubchapter("Discussion")
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subchap3.SetMargins(0, 0, 5, 0)
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for j := 0; j < 19; j++ {
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subchap3.Add(p)
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}
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subchap4 := c.NewSubchapter(ch1, "Conclusion")
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subchap4 := ch1.NewSubchapter("Conclusion")
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subchap4.SetMargins(0, 0, 5, 0)
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for j := 0; j < 23; j++ {
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subchap4.Add(p)
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@ -2781,7 +2788,7 @@ func TestAllOptimizations(t *testing.T) {
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c.AddTOC = true
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ch1 := c.NewChapter("Introduction")
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subchap1 := c.NewSubchapter(ch1, "The fundamentals")
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subchap1 := ch1.NewSubchapter("The fundamentals")
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subchap1.SetMargins(0, 0, 5, 0)
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//subCh1 := NewSubchapter(ch1, "Workflow")
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@ -2797,19 +2804,19 @@ func TestAllOptimizations(t *testing.T) {
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subchap1.Add(p)
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}
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subchap2 := c.NewSubchapter(ch1, "Mechanism")
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subchap2 := ch1.NewSubchapter("Mechanism")
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subchap2.SetMargins(0, 0, 5, 0)
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for j := 0; j < 15; j++ {
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subchap2.Add(p)
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}
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subchap3 := c.NewSubchapter(ch1, "Discussion")
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subchap3 := ch1.NewSubchapter("Discussion")
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subchap3.SetMargins(0, 0, 5, 0)
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for j := 0; j < 19; j++ {
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subchap3.Add(p)
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}
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subchap4 := c.NewSubchapter(ch1, "Conclusion")
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subchap4 := ch1.NewSubchapter("Conclusion")
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subchap4.SetMargins(0, 0, 5, 0)
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for j := 0; j < 23; j++ {
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subchap4.Add(p)
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@ -1,233 +0,0 @@
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/*
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* This file is subject to the terms and conditions defined in
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* file 'LICENSE.md', which is part of this source code package.
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*/
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package creator
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import (
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"fmt"
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"strconv"
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"github.com/unidoc/unidoc/common"
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"github.com/unidoc/unidoc/pdf/model"
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)
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// Subchapter simply represents a sub chapter pertaining to a specific Chapter. It can contain
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// multiple Drawables, just like a chapter.
|
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type Subchapter struct {
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subchapterNum int
|
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title string
|
||||
heading *Paragraph
|
||||
|
||||
contents []Drawable
|
||||
|
||||
// Show chapter numbering
|
||||
showNumbering bool
|
||||
|
||||
// Include in TOC.
|
||||
includeInTOC bool
|
||||
|
||||
// Positioning: relative / absolute.
|
||||
positioning positioning
|
||||
|
||||
// Absolute coordinates (when in absolute mode).
|
||||
xPos, yPos float64
|
||||
|
||||
// Margins to be applied around the block when drawing on Page.
|
||||
margins margins
|
||||
|
||||
// Reference to the creator's TOC.
|
||||
toc *TOC
|
||||
|
||||
// Reference to the chapter the subchapter belongs to.
|
||||
chapter *Chapter
|
||||
|
||||
// Reference to the outline of the creator.
|
||||
outline *model.Outline
|
||||
|
||||
// The item of the subchapter in the outline.
|
||||
outlineItem *model.OutlineItem
|
||||
}
|
||||
|
||||
// newSubchapter creates a new Subchapter under Chapter ch with specified title.
|
||||
// All other parameters are set to their defaults.
|
||||
func newSubchapter(ch *Chapter, title string, style TextStyle) *Subchapter {
|
||||
ch.subchapters++
|
||||
|
||||
p := newParagraph(fmt.Sprintf("%d.%d %s", ch.number, ch.subchapters, title), style)
|
||||
p.SetFont(style.Font) // bold?
|
||||
p.SetFontSize(14)
|
||||
|
||||
subchapter := &Subchapter{
|
||||
subchapterNum: ch.subchapters,
|
||||
title: title,
|
||||
showNumbering: true,
|
||||
includeInTOC: true,
|
||||
heading: p,
|
||||
contents: []Drawable{},
|
||||
chapter: ch,
|
||||
toc: ch.toc,
|
||||
outline: ch.outline,
|
||||
}
|
||||
|
||||
// Add subchapter to chapter.
|
||||
ch.Add(subchapter)
|
||||
|
||||
return subchapter
|
||||
}
|
||||
|
||||
// SetShowNumbering sets a flag to indicate whether or not to show chapter numbers as part of title.
|
||||
func (subchap *Subchapter) SetShowNumbering(show bool) {
|
||||
if show {
|
||||
heading := fmt.Sprintf("%d.%d. %s", subchap.chapter.number, subchap.subchapterNum, subchap.title)
|
||||
subchap.heading.SetText(heading)
|
||||
} else {
|
||||
heading := fmt.Sprintf("%s", subchap.title)
|
||||
subchap.heading.SetText(heading)
|
||||
}
|
||||
subchap.showNumbering = show
|
||||
}
|
||||
|
||||
// SetIncludeInTOC sets a flag to indicate whether or not to include in the table of contents.
|
||||
func (subchap *Subchapter) SetIncludeInTOC(includeInTOC bool) {
|
||||
subchap.includeInTOC = includeInTOC
|
||||
}
|
||||
|
||||
// GetHeading returns the Subchapter's heading Paragraph to address style (font type, size, etc).
|
||||
func (subchap *Subchapter) GetHeading() *Paragraph {
|
||||
return subchap.heading
|
||||
}
|
||||
|
||||
// Set absolute coordinates.
|
||||
/*
|
||||
func (subchap *subchapter) SetPos(x, y float64) {
|
||||
subchap.positioning = positionAbsolute
|
||||
subchap.xPos = x
|
||||
subchap.yPos = y
|
||||
}
|
||||
*/
|
||||
|
||||
// SetMargins sets the Subchapter's margins (left, right, top, bottom).
|
||||
// These margins are typically not needed as the Creator's page margins are used preferably.
|
||||
func (subchap *Subchapter) SetMargins(left, right, top, bottom float64) {
|
||||
subchap.margins.left = left
|
||||
subchap.margins.right = right
|
||||
subchap.margins.top = top
|
||||
subchap.margins.bottom = bottom
|
||||
}
|
||||
|
||||
// GetMargins returns the Subchapter's margins: left, right, top, bottom.
|
||||
func (subchap *Subchapter) GetMargins() (float64, float64, float64, float64) {
|
||||
return subchap.margins.left, subchap.margins.right, subchap.margins.top, subchap.margins.bottom
|
||||
}
|
||||
|
||||
// Add adds a new Drawable to the chapter.
|
||||
// The currently supported Drawables are: *Paragraph, *Image, *Block, *Table.
|
||||
func (subchap *Subchapter) Add(d Drawable) {
|
||||
switch d.(type) {
|
||||
case *Chapter, *Subchapter:
|
||||
common.Log.Debug("Error: Cannot add chapter or subchapter to a subchapter")
|
||||
case *Paragraph, *Image, *Block, *Table, *PageBreak:
|
||||
subchap.contents = append(subchap.contents, d)
|
||||
default:
|
||||
common.Log.Debug("Unsupported: %T", d)
|
||||
}
|
||||
}
|
||||
|
||||
// GeneratePageBlocks generates the page blocks. Multiple blocks are generated if the contents wrap
|
||||
// over multiple pages. Implements the Drawable interface.
|
||||
func (subchap *Subchapter) GeneratePageBlocks(ctx DrawContext) ([]*Block, DrawContext, error) {
|
||||
origCtx := ctx
|
||||
|
||||
if subchap.positioning.isRelative() {
|
||||
// Update context.
|
||||
ctx.X += subchap.margins.left
|
||||
ctx.Y += subchap.margins.top
|
||||
ctx.Width -= subchap.margins.left + subchap.margins.right
|
||||
ctx.Height -= subchap.margins.top
|
||||
}
|
||||
|
||||
origX := ctx.X
|
||||
origY := ctx.Y
|
||||
|
||||
blocks, ctx, err := subchap.heading.GeneratePageBlocks(ctx)
|
||||
if err != nil {
|
||||
return blocks, ctx, err
|
||||
}
|
||||
if len(blocks) > 1 {
|
||||
ctx.Page++ // did not fit - moved to next Page.
|
||||
}
|
||||
|
||||
// Generate subchapter title and number.
|
||||
subchapTitle := subchap.title
|
||||
var subchapNumber string
|
||||
page := int64(ctx.Page)
|
||||
|
||||
if subchap.showNumbering {
|
||||
if subchap.chapter.number != 0 {
|
||||
subchapNumber = strconv.Itoa(subchap.chapter.number)
|
||||
}
|
||||
if subchap.subchapterNum != 0 {
|
||||
if subchapNumber != "" {
|
||||
subchapNumber += "."
|
||||
}
|
||||
|
||||
subchapNumber += strconv.Itoa(subchap.subchapterNum) + "."
|
||||
}
|
||||
}
|
||||
|
||||
if subchapNumber != "" {
|
||||
subchapTitle = fmt.Sprintf("%s %s", subchapNumber, subchapTitle)
|
||||
}
|
||||
|
||||
// Add to TOC.
|
||||
if subchap.includeInTOC {
|
||||
line := subchap.toc.Add(subchapNumber, subchap.title, strconv.FormatInt(page, 10), 2)
|
||||
if subchap.toc.showLinks {
|
||||
line.SetLink(page, origX, origY)
|
||||
}
|
||||
}
|
||||
|
||||
// Add to outline.
|
||||
if subchap.outlineItem == nil {
|
||||
subchap.outlineItem = model.NewOutlineItem(
|
||||
subchapTitle,
|
||||
model.NewOutlineDest(page-1, origX, origY),
|
||||
)
|
||||
subchap.chapter.outlineItem.Add(subchap.outlineItem)
|
||||
} else {
|
||||
outlineDest := &subchap.outlineItem.Dest
|
||||
outlineDest.Page = page - 1
|
||||
outlineDest.X = origX
|
||||
outlineDest.Y = origY
|
||||
}
|
||||
|
||||
for _, d := range subchap.contents {
|
||||
newBlocks, c, err := d.GeneratePageBlocks(ctx)
|
||||
if err != nil {
|
||||
return blocks, ctx, err
|
||||
}
|
||||
if len(newBlocks) < 1 {
|
||||
continue
|
||||
}
|
||||
|
||||
// The first block is always appended to the last..
|
||||
blocks[len(blocks)-1].mergeBlocks(newBlocks[0])
|
||||
blocks = append(blocks, newBlocks[1:]...)
|
||||
|
||||
ctx = c
|
||||
}
|
||||
|
||||
if subchap.positioning.isRelative() {
|
||||
// Move back X to same start of line.
|
||||
ctx.X = origCtx.X
|
||||
}
|
||||
|
||||
if subchap.positioning.isAbsolute() {
|
||||
// If absolute: return original context.
|
||||
return blocks, origCtx, nil
|
||||
}
|
||||
|
||||
return blocks, ctx, nil
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user