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custom pageSize

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This commit is contained in:
Klaus Wendel, archium GmbH 2021-03-03 09:25:39 +01:00
parent d58f289647
commit 7272aa1ddf
1 changed files with 23 additions and 10 deletions
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33
fpdf.go
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@ -16,10 +16,11 @@
package gofpdf package gofpdf
// Version: 1.7 // Version: 1.7a1
// Date: 2011-06-18 // Date: 2011-06-18
// Author: Olivier PLATHEY // Author: Olivier PLATHEY
// Port to Go: Kurt Jung, 2013-07-15 // Port to Go: Kurt Jung, 2013-07-15
// Additions: Klaus Wendel, archium GmbH/Gera, 2021-03-02
import ( import (
"bytes" "bytes"
@ -57,7 +58,7 @@ func (b *fmtBuffer) printf(fmtStr string, args ...interface{}) {
b.Buffer.WriteString(fmt.Sprintf(fmtStr, args...)) b.Buffer.WriteString(fmt.Sprintf(fmtStr, args...))
} }
func fpdfNew(orientationStr, unitStr, sizeStr, fontDirStr string, size SizeType) (f *Fpdf) { func fpdfNew(orientationStr, unitStr, sizeStr, fontDirStr string, size SizeType, density float64) (f *Fpdf) {
f = new(Fpdf) f = new(Fpdf)
if orientationStr == "" { if orientationStr == "" {
orientationStr = "p" orientationStr = "p"
@ -74,6 +75,11 @@ func fpdfNew(orientationStr, unitStr, sizeStr, fontDirStr string, size SizeType)
if fontDirStr == "" { if fontDirStr == "" {
fontDirStr = "." fontDirStr = "."
} }
// Page density in dpi
if density == 0.0 {
density = 72.0
}
f.page = 0 f.page = 0
f.n = 2 f.n = 2
f.pages = make([]*bytes.Buffer, 0, 8) f.pages = make([]*bytes.Buffer, 0, 8)
@ -126,11 +132,11 @@ func fpdfNew(orientationStr, unitStr, sizeStr, fontDirStr string, size SizeType)
case "pt", "point": case "pt", "point":
f.k = 1.0 f.k = 1.0
case "mm": case "mm":
f.k = 72.0 / 25.4 f.k = density / 25.4
case "cm": case "cm":
f.k = 72.0 / 2.54 f.k = density / 2.54
case "in", "inch": case "in", "inch":
f.k = 72.0 f.k = density
default: default:
f.err = fmt.Errorf("incorrect unit %s", unitStr) f.err = fmt.Errorf("incorrect unit %s", unitStr)
return return
@ -3006,7 +3012,14 @@ func (f *Fpdf) ImageTypeFromMime(mimeStr string) (tp string) {
return return
} }
func (f *Fpdf) imageOut(info *ImageInfoType, x, y, w, h float64, allowNegativeX, flow bool, link int, linkStr string) { func (f *Fpdf) imageOut(info *ImageInfoType, x, y, w, h float64, allowNegativeX, flow bool, link int, linkStr string, density float64) {
/*
// density in dpi
if density == 0.0 {
density = 72.0
}
*/
// Automatic width and height calculation if needed // Automatic width and height calculation if needed
if w == 0 && h == 0 { if w == 0 && h == 0 {
// Put image at 96 dpi // Put image at 96 dpi
@ -3024,10 +3037,10 @@ func (f *Fpdf) imageOut(info *ImageInfoType, x, y, w, h float64, allowNegativeX,
h = -info.dpi h = -info.dpi
} }
if w < 0 { if w < 0 {
w = -info.w * 72.0 / w / f.k w = -info.w * density / w / f.k
} }
if h < 0 { if h < 0 {
h = -info.h * 72.0 / h / f.k h = -info.h * density / h / f.k
} }
if w == 0 { if w == 0 {
w = h * info.w / info.h w = h * info.w / info.h
@ -3110,7 +3123,7 @@ func (f *Fpdf) Image(imageNameStr string, x, y, w, h float64, flow bool, tp stri
// If link refers to an internal page anchor (that is, it is non-zero; see // If link refers to an internal page anchor (that is, it is non-zero; see
// AddLink()), the image will be a clickable internal link. Otherwise, if // AddLink()), the image will be a clickable internal link. Otherwise, if
// linkStr specifies a URL, the image will be a clickable external link. // linkStr specifies a URL, the image will be a clickable external link.
func (f *Fpdf) ImageOptions(imageNameStr string, x, y, w, h float64, flow bool, options ImageOptions, link int, linkStr string) { func (f *Fpdf) ImageOptions(imageNameStr string, x, y, w, h float64, flow bool, options ImageOptions, link int, linkStr string, density float64) {
if f.err != nil { if f.err != nil {
return return
} }
@ -3118,7 +3131,7 @@ func (f *Fpdf) ImageOptions(imageNameStr string, x, y, w, h float64, flow bool,
if f.err != nil { if f.err != nil {
return return
} }
f.imageOut(info, x, y, w, h, options.AllowNegativePosition, flow, link, linkStr) f.imageOut(info, x, y, w, h, options.AllowNegativePosition, flow, link, linkStr, density)
return return
} }