builder

type AppearanceGenerator struct {
	Form *semantic.AcroForm
}

type CellPadding struct {
	Top, Right, Bottom, Left float64
}

type Color struct {
	R, G, B float64
	A       float64
}

type FormBuilder interface {
	// SetText sets the value of a text field.
	SetText(name, value string) FormBuilder
	// SetCheckbox sets the state of a checkbox.
	SetCheckbox(name string, checked bool) FormBuilder
	// SetChoice sets the selected value of a choice field (combo box or list box).
	SetChoice(name, value string) FormBuilder
	// Finish returns to the PDFBuilder.
	Finish() PDFBuilder
}

type HAlign string

type ImageOptions struct {
	Interpolate bool
	SMask       *semantic.Image
}

type LineOptions struct {
	StrokeColor Color
	LineWidth   float64
	LineCap     contentstream.LineCap
	DashPattern []float64
	DashPhase   float64
}

type Outline struct {
	Title     string
	Page      *semantic.Page
	PageIndex int
	X         *float64
	Y         *float64
	Zoom      *float64
	Children  []Outline
}

type PDFBuilder interface {
	NewPage(width, height float64) PageBuilder
	AddPage(page *semantic.Page) PDFBuilder
	SetInfo(info *semantic.DocumentInfo) PDFBuilder
	SetMetadata(xmp []byte) PDFBuilder
	SetLanguage(lang string) PDFBuilder
	SetMarked(marked bool) PDFBuilder
	AddPageLabel(pageIndex int, prefix string) PDFBuilder
	AddOutline(out Outline) PDFBuilder
	SetEncryption(ownerPassword, userPassword string, perms raw.Permissions, encryptMetadata bool) PDFBuilder
	RegisterFont(name string, font *semantic.Font) PDFBuilder
	RegisterTrueTypeFont(name string, data []byte) PDFBuilder
	AddEmbeddedFile(file semantic.EmbeddedFile) PDFBuilder
	SetCalculationOrder(fields []semantic.FormField) PDFBuilder
	Form() FormBuilder
	Build() (*semantic.Document, error)
}

type PageBuilder interface {
	DrawText(text string, x, y float64, opts TextOptions) PageBuilder
	DrawPath(path *contentstream.Path, opts PathOptions) PageBuilder
	DrawImage(img *semantic.Image, x, y, width, height float64, opts ImageOptions) PageBuilder
	DrawRectangle(x, y, width, height float64, opts RectOptions) PageBuilder
	DrawLine(x1, y1, x2, y2 float64, opts LineOptions) PageBuilder
	DrawTable(table Table, opts TableOptions) PageBuilder
	AddAnnotation(ann semantic.Annotation) PageBuilder
	AddFormField(field semantic.FormField) PageBuilder
	SetMediaBox(box semantic.Rectangle) PageBuilder
	SetCropBox(box semantic.Rectangle) PageBuilder
	SetRotation(degrees int) PageBuilder
	Finish() PDFBuilder
}

type PathOptions struct {
	StrokeColor Color
	FillColor   Color
	LineWidth   float64
	LineCap     contentstream.LineCap
	LineJoin    contentstream.LineJoin
	DashPattern []float64
	DashPhase   float64
	Fill        bool
	Stroke      bool
}

type RectOptions = PathOptions

type Table struct {
	Columns    []float64
	Rows       []TableRow
	HeaderRows int
}

type TableCell struct {
	Text            string
	Font            string
	FontSize        float64
	Padding         *CellPadding
	BackgroundColor Color
	TextColor       Color
	BorderColor     Color
	BorderWidth     float64
	ColSpan         int
	HAlign          HAlign
	VAlign          VAlign
	Tag             string
}

type TableOptions struct {
	X             float64
	Y             float64
	RowHeight     float64
	CellPadding   float64
	BorderColor   Color
	BorderWidth   float64
	HeaderFill    Color
	RepeatHeaders bool
	Tagged        bool
	BottomMargin  float64
	DefaultFont   string
	DefaultSize   float64
	TopMargin     float64
	LeftMargin    float64
}

type TableRow struct {
	Cells []TableCell
}

type TextOptions struct {
	Font         string
	FontSize     float64
	Color        Color
	RenderMode   contentstream.TextRenderMode
	CharSpacing  float64
	WordSpacing  float64
	HorizScaling float64
	Rise         float64
	Tag          string
	MCID         *int
	Rotate       float64 // Rotation in degrees (counter-clockwise)
}

type VAlign string