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/*
* Copyright (c) 2013 Kurt Jung (Gmail: kurt.w.jung)
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package gofpdf
import (
"bytes"
)
// Version of FPDF from which this package is derived
const (
cnFpdfVersion = "1.7"
)
type blendModeType struct {
strokeStr, fillStr, modeStr string
objNum int
}
type gradientType struct {
tp int // 2: linear, 3: radial
clr1Str, clr2Str string
x1, y1, x2, y2, r float64
objNum int
}
// SizeType fields Wd and Ht specify the horizontal and vertical extents of a
// document element such as a page.
type SizeType struct {
Wd, Ht float64
}
// PointType fields X and Y specify the horizontal and vertical coordinates of
// a point, typically used in drawing.
type PointType struct {
X, Y float64
}
// ImageInfoType contains size, color and other information about an image
type ImageInfoType struct {
data []byte
smask []byte
i int
n int
w float64
h float64
cs string
pal []byte
bpc int
f string
dp string
trns []int
scale float64 // document scaling factor
}
// Extent returns the width and height of the image in the units of the Fpdf
// object.
func (info *ImageInfoType) Extent() (wd, ht float64) {
return info.w / info.scale, info.h / info.scale
}
// Width returns the width of the image in the units of the Fpdf object.
func (info *ImageInfoType) Width() float64 {
return info.w / info.scale
}
// Height returns the height of the image in the units of the Fpdf object.
func (info *ImageInfoType) Height() float64 {
return info.h / info.scale
}
type fontFileType struct {
length1, length2 int64
n int
}
type linkType struct {
x, y, wd, ht float64
link int // Auto-generated internal link ID or...
linkStr string // ...application-provided external link string
}
type intLinkType struct {
page int
y float64
}
// outlineType is used for a sidebar outline of bookmarks
type outlineType struct {
text string
level, parent, first, last, next, prev int
y float64
p int
}
// InitType is used with NewCustom() to customize an Fpdf instance.
// OrientationStr, UnitStr, SizeStr and FontDirStr correspond to the arguments
// accepted by New(). If the Wd and Ht fields of Size are each greater than
// zero, Size will be used to set the default page size rather than SizeStr. Wd
// and Ht are specified in the units of measure indicated by UnitStr.
type InitType struct {
OrientationStr string
UnitStr string
SizeStr string
Size SizeType
FontDirStr string
}
// Fpdf is the principal structure for creating a single PDF document
type Fpdf struct {
page int // current page number
n int // current object number
offsets []int // array of object offsets
buffer fmtBuffer // buffer holding in-memory PDF
pages []*bytes.Buffer // slice[page] of page content; 1-based
state int // current document state
compress bool // compression flag
k float64 // scale factor (number of points in user unit)
defOrientation string // default orientation
curOrientation string // current orientation
stdPageSizes map[string]SizeType // standard page sizes
defPageSize SizeType // default page size
curPageSize SizeType // current page size
pageSizes map[int]SizeType // used for pages with non default sizes or orientations
unitStr string // unit of measure for all rendered objects except fonts
wPt, hPt float64 // dimensions of current page in points
w, h float64 // dimensions of current page in user unit
lMargin float64 // left margin
tMargin float64 // top margin
rMargin float64 // right margin
bMargin float64 // page break margin
cMargin float64 // cell margin
x, y float64 // current position in user unit
lasth float64 // height of last printed cell
lineWidth float64 // line width in user unit
fontpath string // path containing fonts
coreFonts map[string]bool // array of core font names
fonts map[string]fontDefType // array of used fonts
fontFiles map[string]fontFileType // array of font files
diffs []string // array of encoding differences
fontFamily string // current font family
fontStyle string // current font style
underline bool // underlining flag
currentFont fontDefType // current font info
fontSizePt float64 // current font size in points
fontSize float64 // current font size in user unit
drawColor string // commands for drawing color
fillColor string // commands for filling color
textColor string // commands for text color
colorFlag bool // indicates whether fill and text colors are different
ws float64 // word spacing
images map[string]*ImageInfoType // array of used images
pageLinks [][]linkType // pageLinks[page][link], both 1-based
links []intLinkType // array of internal links
outlines []outlineType // array of outlines
outlineRoot int // root of outlines
autoPageBreak bool // automatic page breaking
acceptPageBreak func() bool // returns true to accept page break
pageBreakTrigger float64 // threshold used to trigger page breaks
inHeader bool // flag set when processing header
headerFnc func() // function provided by app and called to write header
inFooter bool // flag set when processing footer
footerFnc func() // function provided by app and called to write footer
zoomMode string // zoom display mode
layoutMode string // layout display mode
title string // title
subject string // subject
author string // author
keywords string // keywords
creator string // creator
aliasNbPagesStr string // alias for total number of pages
pdfVersion string // PDF version number
fontDirStr string // location of font definition files
capStyle int // line cap style: butt 0, round 1, square 2
joinStyle int // line segment join style: miter 0, round 1, bevel 2
blendList []blendModeType // slice[idx] of alpha transparency modes, 1-based
blendMap map[string]int // map into blendList
gradientList []gradientType // slice[idx] of gradient records
clipNest int // Number of active clipping contexts
transformNest int // Number of active transformation contexts
err error // Set if error occurs during life cycle of instance
}
type encType struct {
uv int
name string
}
type encListType [256]encType
type fontBoxType struct {
Xmin, Ymin, Xmax, Ymax int
}
type fontDescType struct {
Ascent int
Descent int
CapHeight int
Flags int
FontBBox fontBoxType
ItalicAngle int
StemV int
MissingWidth int
}
type fontDefType struct {
Tp string // "Core", "TrueType", ...
Name string // "Courier-Bold", ...
Desc fontDescType // Font descriptor
Up int // Underline position
Ut int // Underline thickness
Cw [256]int // Character width by ordinal
Enc string // "cp1252", ...
Diff string // Differences from reference encoding
File string // "Redressed.z"
Size1, Size2 int // Type1 values
OriginalSize int // Size of uncompressed font file
I int // 1-based position in font list, set by font loader, not this program
N int // Set by font loader
DiffN int // Position of diff in app array, set by font loader
}
type fontInfoType struct {
Data []byte
File string
OriginalSize int
FontName string
Bold bool
IsFixedPitch bool
UnderlineThickness int
UnderlinePosition int
Widths [256]int
Size1, Size2 uint32
Desc fontDescType
}
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