From 3da37926268f1057e411f5f5a1cff94fc55329ed Mon Sep 17 00:00:00 2001
From: Kurt <kurt.w.jung@gmail.com>
Date: Thu, 10 Nov 2016 12:33:16 -0500
Subject: Support standard tiff images

---
 contrib/tiff/tiff.go | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 contrib/tiff/tiff.go

(limited to 'contrib/tiff/tiff.go')

diff --git a/contrib/tiff/tiff.go b/contrib/tiff/tiff.go
new file mode 100644
index 0000000..c2880d6
--- /dev/null
+++ b/contrib/tiff/tiff.go
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2016 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 tiff
+
+import (
+	"bytes"
+	"fmt"
+	"image"
+	"image/png"
+	"io"
+	"os"
+
+	"github.com/jung-kurt/gofpdf"
+	"golang.org/x/image/tiff"
+)
+
+// RegisterReader ...
+func RegisterReader(fpdf *gofpdf.Fpdf, imgName string, options gofpdf.ImageOptions, r io.Reader) (info *gofpdf.ImageInfoType) {
+	var err error
+	var img image.Image
+	var buf bytes.Buffer
+	if fpdf.Ok() {
+		if options.ImageType == "tiff" || options.ImageType == "tif" {
+			img, err = tiff.Decode(r)
+			if err == nil {
+				err = png.Encode(&buf, img)
+				if err == nil {
+					options.ImageType = "png"
+					info = fpdf.RegisterImageOptionsReader(imgName, options, &buf)
+				}
+			}
+		} else {
+			err = fmt.Errorf("expecting \"tiff\" or \"tif\" as image type, got \"%s\"", options.ImageType)
+		}
+		if err != nil {
+			fpdf.SetError(err)
+		}
+	}
+	return
+}
+
+// RegisterFile ...
+func RegisterFile(fpdf *gofpdf.Fpdf, imgName string, options gofpdf.ImageOptions, tiffFileStr string) (info *gofpdf.ImageInfoType) {
+	var f *os.File
+	var err error
+
+	if fpdf.Ok() {
+		f, err = os.Open(tiffFileStr)
+		if err == nil {
+			info = RegisterReader(fpdf, imgName, options, f)
+			f.Close()
+		} else {
+			fpdf.SetError(err)
+		}
+	}
+	return
+}
-- 
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