4 files changed, 91 insertions, 0 deletions
diff --git a/contrib/httpimg/httpimg.go b/contrib/httpimg/httpimg.go
new file mode 100644
index 0000000..10afcc8
--- /dev/null
+++ b/contrib/httpimg/httpimg.go
@@ -0,0 +1,32 @@
+package httpimg
+
+import (
+	"github.com/jung-kurt/gofpdf"
+	"net/http"
+)
+
+// Register registers a HTTP image. Downloading the image from the provided URL
+// and adding it to the PDF but not adding it to the page. Use Image() with the
+// same URL to add the image to the page.
+func Register(f *gofpdf.Fpdf, urlStr, tp string) (info *gofpdf.ImageInfoType) {
+	info = f.GetImageInfo(urlStr)
+
+	if info != nil {
+		return
+	}
+
+	resp, err := http.Get(urlStr)
+
+	if err != nil {
+		f.SetError(err)
+		return
+	}
+
+	defer resp.Body.Close()
+
+	if tp == "" {
+		tp = f.ImageTypeFromMime(resp.Header["Content-Type"][0])
+	}
+
+	return f.RegisterImageReader(urlStr, tp, resp.Body)
+}
diff --git a/contrib/httpimg/httpimg_test.go b/contrib/httpimg/httpimg_test.go
new file mode 100644
index 0000000..8639bda
--- /dev/null
+++ b/contrib/httpimg/httpimg_test.go
@@ -0,0 +1,58 @@
+package httpimg_test
+
+import (
+	"fmt"
+	"github.com/jung-kurt/gofpdf"
+	"github.com/jung-kurt/gofpdf/contrib/httpimg"
+	"os"
+	"path/filepath"
+)
+
+const (
+	cnGofpdfDir  = "./"
+	cnExampleDir = cnGofpdfDir + "/pdf"
+)
+
+func init() {
+	cleanup()
+}
+
+func cleanup() {
+	filepath.Walk(cnExampleDir,
+		func(path string, info os.FileInfo, err error) (reterr error) {
+			if path[len(path)-4:] == ".pdf" {
+				os.Remove(path)
+			}
+			return
+		})
+}
+
+func exampleFilename(baseStr string) string {
+	return filepath.Join(cnExampleDir, baseStr+".pdf")
+}
+
+func summary(err error, fileStr string) {
+	if err == nil {
+		fileStr = filepath.ToSlash(fileStr)
+		fmt.Printf("Successfully generated %s\n", fileStr)
+	} else {
+		fmt.Println(err)
+	}
+}
+
+func ExampleRegister() {
+	pdf := gofpdf.New("", "", "", "")
+	pdf.SetFont("Helvetica", "", 12)
+	pdf.SetFillColor(200, 200, 220)
+	pdf.AddPage()
+
+	url := "https://github.com/jung-kurt/gofpdf/raw/master/image/logo_gofpdf.jpg?raw=true"
+	httpimg.Register(pdf, url, "")
+	pdf.Image(url, 100, 100, 20, 20, false, "", 0, "")
+
+	fileStr := exampleFilename("contrib_httpimg_Register")
+	err := pdf.OutputFileAndClose(fileStr)
+	summary(err, fileStr)
+	// Output:
+	// Successfully generated pdf/contrib_httpimg_Register.pdf
+}
diff --git a/contrib/httpimg/pdf/.gitignore b/contrib/httpimg/pdf/.gitignore
new file mode 100644
index 0000000..a136337
--- /dev/null
+++ b/contrib/httpimg/pdf/.gitignore
@@ -0,0 +1 @@
+*.pdf
diff --git a/contrib/httpimg/pdf/.gitkeep b/contrib/httpimg/pdf/.gitkeep
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/contrib/httpimg/pdf/.gitkeep