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kaferikaferi
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Merge pull request #91 from aspose-pdf-cloud/pdfcloud-4971-added-snippets-watermarks
PDFCLOUD-4971: added snippets for Watermarks
2 parents bc0f3c8 + 95b0ba4 commit b1a2de3

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‎uses_cases/watermarks/watermarks_extract.go‎

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package main
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import (
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"fmt"
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asposepdfcloud "github.com/aspose-pdf-cloud/aspose-pdf-cloud-go/v25"
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)
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// Extract images watermarks from document and show info to console
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func GetWatermarks(pdf_api *asposepdfcloud.PdfApiService, document string, remoteFolder string) {
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uploadFile(pdf_api, document)
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args := map[string]interface{}{
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"folder": remoteFolder,
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}
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result, httpResponse, err := pdf_api.GetPages(document, args)
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if err != nil {
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fmt.Println(err.Error())
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} else if httpResponse.StatusCode < 200 || httpResponse.StatusCode > 299 {
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fmt.Println("GetPages() - Unexpected error!")
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} else {
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for pageNum := range result.Pages.List {
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imageResult, httpResponse, err := pdf_api.GetImages(document, int32(pageNum+1), args)
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if err != nil {
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fmt.Println(err.Error())
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} else if httpResponse.StatusCode < 200 || httpResponse.StatusCode > 299 {
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fmt.Println("Unexpected error!")
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} else {
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for _, image := range imageResult.Images.List {
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fmt.Println("Page", pageNum+1, "Image Id=", image.Id, "LinkId:", image.Links[0].Href, "Width:", (image.Rectangle.LLY - image.Rectangle.LLX), "Height:", (image.Rectangle.URY - image.Rectangle.URX))
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}
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}
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}
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}
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}

‎uses_cases/watermarks/watermarks_helper.go‎

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package main
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import (
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"fmt"
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"os"
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"path"
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"path/filepath"
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asposepdfcloud "github.com/aspose-pdf-cloud/aspose-pdf-cloud-go/v25"
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)
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const (
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REMOTE_FOLDER = "Your_Temp_Pdf_Cloud"
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LOCAL_FOLDER = "c:\\Samples"
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PDF_DOCUMENT = "sample.pdf"
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PDF_OUTPUT = "output_pages.pdf"
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PDF_DOCUMENT_WITH_WATERMARKS = "sample_watermarks.pdf"
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PAGE_NUMBER = 2
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IMAGE_FILE = "sample.png"
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IMAGE_OPACITY = 0.4
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IMAGE_ROTATE = 45
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IMAGE_X = 200
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IMAGE_Y = 400
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IMAGE_WIDTH = 64
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IMAGE_HEIGHT = 64
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APP_SID = "************" // Your Application SID
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APP_KEY = "************" // Your Application Key
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)
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var (
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IMAGE_IDS_DEL = []string{
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"GE5TKMBQGE4TWMRQGAWDIMBQFQZDSMJMGQ4TC",
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"GI5TKMBQGE4TWMRQGAWDIMBQFQZDSMJMGQ4TC",
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"GM5TKMBQGE4TWMRQGAWDIMBQFQZDSMJMGQ4TC",
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"GQ5TKMBQGE4TWMRQGAWDIMBQFQZDSMJMGQ4TC",
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"GU5TKMBQGE4TWMRQGAWDIMBQFQZDSMJMGQ4TC",
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"GY5TKMBQGE4TWMRQGAWDIMBQFQZDSMJMGQ4TC",
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"G45TKMBQGE4TWMRQGAWDIMBQFQZDSMJMGQ4TC",
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"HA5TKMBQGE4TWMRQGAWDIMBQFQZDSMJMGQ4TC",
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}
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)
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func initPdfApi() *asposepdfcloud.PdfApiService {
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pdfApi := asposepdfcloud.NewPdfApiService(APP_SID, APP_KEY, "")
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return pdfApi
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}
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// Upload local file to the remote folder with check errors
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func uploadFile(pdf_api *asposepdfcloud.PdfApiService, name string) {
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args := map[string]interface{}{
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"folder": REMOTE_FOLDER,
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}
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file, err := os.Open(filepath.Join(LOCAL_FOLDER, name))
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if err != nil {
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fmt.Println(err.Error())
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} else {
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_, httpResponse, err := pdf_api.UploadFile(path.Join(REMOTE_FOLDER, name), file, args)
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if err != nil {
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fmt.Println(err.Error())
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} else if httpResponse.StatusCode < 200 || httpResponse.StatusCode > 299 {
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fmt.Println("Unexpected error!")
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} else {
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fmt.Println("File '" + name + " ' succeddfully uplouaded.")
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}
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}
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}
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// Download file from remote folder and save it locally with check errors
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func downloadFile(pdf_api *asposepdfcloud.PdfApiService, name string, output_name string, prefix string) {
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args := map[string]interface{}{
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"folder": REMOTE_FOLDER,
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}
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result_data, httpResponse, err := pdf_api.DownloadFile(path.Join(REMOTE_FOLDER, name), args)
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if err != nil {
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fmt.Println(err.Error())
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} else if httpResponse.StatusCode < 200 || httpResponse.StatusCode > 299 {
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fmt.Println("Unexpected error!")
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} else {
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fileName := path.Join(LOCAL_FOLDER, prefix+output_name)
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f, _ := os.Create(fileName)
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_, _ = f.Write(result_data)
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fmt.Println("File '" + prefix + fileName + "' successfully downloaded.")
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}
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}

‎uses_cases/watermarks/watermarks_images_add.go‎

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package main
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import (
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"fmt"
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"path"
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asposepdfcloud "github.com/aspose-pdf-cloud/aspose-pdf-cloud-go/v25"
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)
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// Append image watermark to a document
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func AppendNewWatermark(pdf_api *asposepdfcloud.PdfApiService, document string, imageFileName string, opacity float64, rotate float64, xPos float64, yPos float64, width float64, height float64, outputDocument string, remoteFolder string) {
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uploadFile(pdf_api, document)
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uploadFile(pdf_api, imageFileName)
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args := map[string]interface{}{
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"folder": remoteFolder,
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}
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image := asposepdfcloud.ImageStamp{
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Background: true,
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Opacity: opacity,
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Rotate: asposepdfcloud.RotationNone,
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RotateAngle: rotate,
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XIndent: xPos,
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YIndent: yPos,
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Width: width,
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Height: height,
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Zoom: 1,
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FileName: path.Join(remoteFolder, imageFileName),
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}
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_, httpResponse, err := pdf_api.PostDocumentImageStamps(document, []asposepdfcloud.ImageStamp{image}, args)
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if err != nil {
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fmt.Println(err.Error())
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} else if httpResponse.StatusCode < 200 || httpResponse.StatusCode > 299 {
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fmt.Println("Unexpected error!")
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} else {
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fmt.Println("Successfully added image watermark. ")
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downloadFile(pdf_api, document, outputDocument, "add_watermark_")
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}
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}

‎uses_cases/watermarks/watermarks_images_delete.go‎

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package main
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import (
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"fmt"
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asposepdfcloud "github.com/aspose-pdf-cloud/aspose-pdf-cloud-go/v25"
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)
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// Delete images watermarks from document
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func DeleteImageWatermarks(pdf_api *asposepdfcloud.PdfApiService, document string, watermarkIds []string, outputDocument string, remoteFolder string) {
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uploadFile(pdf_api, document)
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args := map[string]interface{}{
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"folder": remoteFolder,
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}
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for _, watermarkId := range watermarkIds {
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_, httpResponse, err := pdf_api.DeleteImage(document, watermarkId, args)
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if err != nil {
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fmt.Println(err.Error())
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} else if httpResponse.StatusCode < 200 || httpResponse.StatusCode > 299 {
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fmt.Println("DeleteImageWatermarks()): Failed to delete image from the document.")
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} else {
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fmt.Println("DeleteImageWatermarks(): image '" + watermarkId + "' successfully deleted from the document '" + document + "'.")
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}
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}
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downloadFile(pdf_api, document, outputDocument, "del_image_stamp_")
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}

‎uses_cases/watermarks/watermarks_launch.go‎

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package main
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func main() {
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pdfApi := initPdfApi()
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AppendNewWatermark(pdfApi, PDF_DOCUMENT, IMAGE_FILE, IMAGE_OPACITY, IMAGE_ROTATE, IMAGE_X, IMAGE_Y, IMAGE_WIDTH, IMAGE_HEIGHT, PDF_OUTPUT, REMOTE_FOLDER)
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GetWatermarks(pdfApi, PDF_DOCUMENT_WITH_WATERMARKS, REMOTE_FOLDER)
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DeleteImageWatermarks(pdfApi, PDF_DOCUMENT_WITH_WATERMARKS, IMAGE_IDS_DEL, PDF_OUTPUT, REMOTE_FOLDER)
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}

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