Aggiungere immagini a una diapositiva

Questa pagina descrive come aggiungere immagini a una presentazione Google esistente. Quando aggiungi un'immagine, fornisci all'API Presentazioni Google un URL accessibile pubblicamente all'immagine.

Informazioni sulle immagini

Le immagini nell'API Presentazioni sono un tipo di elemento di pagina. Come per qualsiasi elemento di pagina, devi specificare le dimensioni visive e la posizione dell'immagine utilizzando le proprietà size e transform di PageElement. Per ulteriori dettagli su come ridimensionare e posizionare correttamente l'immagine, consulta Dimensioni e posizione delle forme.

Per aggiungere un'immagine, utilizza il metodo CreateImageRequest. Le immagini devono avere dimensioni inferiori a 50 MB, non possono superare i 25 megapixel e devono essere in uno dei formati PNG, JPEG o GIF.

Esempio

Questo esempio utilizza l'API Presentazioni per aggiungere un'immagine a una presentazione.

Apps Script

slides/api/Snippets.gs

Visualizza su GitHub

/**
 * Create a new image, using the supplied object ID, with content downloaded from imageUrl.
 * @param {string} presentationId
 * @param {string} pageId
 * @returns {*}
 */
function createImage(presentationId, pageId) {
  let requests = [];
  const imageId = 'MyImage_01';
  const imageUrl = 'https://www.google.com/images/branding/googlelogo/2x/' +
      'googlelogo_color_272x92dp.png';
  const emu4M = {
    magnitude: 4000000,
    unit: 'EMU'
  };
  requests.push({
    createImage: {
      objectId: imageId,
      url: imageUrl,
      elementProperties: {
        pageObjectId: pageId,
        size: {
          height: emu4M,
          width: emu4M
        },
        transform: {
          scaleX: 1,
          scaleY: 1,
          translateX: 100000,
          translateY: 100000,
          unit: 'EMU'
        }
      }
    }
  });

  // Execute the request.
  try {
    const response = Slides.Presentations.batchUpdate({
      requests: requests
    }, presentationId);

    const createImageResponse = response.replies;
    console.log('Created image with ID: %s', createImageResponse[0].createImage.objectId);

    return createImageResponse;
  } catch (err) {
    // TODO (Developer) - Handle exception
    console.log('Failed with error: %s', err.error);
  }
};

Go

slide/snippets/presentations.go

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// Create a new image, using the supplied object ID, with content downloaded from imageURL.
imageId := "MyImageId_01"
emu4M := slides.Dimension{Magnitude: 4000000, Unit: "EMU"}
requests := []*slides.Request{{
	CreateImage: &slides.CreateImageRequest{
		ObjectId: imageId,
		Url:      imageURL,
		ElementProperties: &slides.PageElementProperties{
			PageObjectId: slideId,
			Size: &slides.Size{
				Height: &emu4M,
				Width:  &emu4M,
			},
			Transform: &slides.AffineTransform{
				ScaleX:     1.0,
				ScaleY:     1.0,
				TranslateX: 100000.0,
				TranslateY: 100000.0,
				Unit:       "EMU",
			},
		},
	},
}}

// Execute the request.
body := &slides.BatchUpdatePresentationRequest{
	Requests: requests,
}
response, err := slidesService.Presentations.BatchUpdate(presentationId, body).Do()
if err != nil {
	log.Fatalf("Unable to create image. %v", err)
} else {
	fmt.Printf("Created image with ID: %s", response.Replies[0].CreateImage.ObjectId)
}

Java

slides/snippets/src/main/java/CreateImage.java

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import com.google.api.client.googleapis.json.GoogleJsonError;
import com.google.api.client.googleapis.json.GoogleJsonResponseException;
import com.google.api.client.http.HttpRequestInitializer;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.gson.GsonFactory;
import com.google.api.services.slides.v1.Slides;
import com.google.api.services.slides.v1.SlidesScopes;
import com.google.api.services.slides.v1.model.AffineTransform;
import com.google.api.services.slides.v1.model.BatchUpdatePresentationRequest;
import com.google.api.services.slides.v1.model.BatchUpdatePresentationResponse;
import com.google.api.services.slides.v1.model.CreateImageRequest;
import com.google.api.services.slides.v1.model.CreateImageResponse;
import com.google.api.services.slides.v1.model.Dimension;
import com.google.api.services.slides.v1.model.PageElementProperties;
import com.google.api.services.slides.v1.model.Request;
import com.google.api.services.slides.v1.model.Size;
import com.google.auth.http.HttpCredentialsAdapter;
import com.google.auth.oauth2.GoogleCredentials;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/* Class to demonstrate the use of Slides Create Image API */
public class CreateImage {
  /**
   * Create a new image, using the supplied object ID, with content
   * downloaded from imageUrl.
   *
   * @param presentationId - id of the presentation.
   * @param slideId        - id of the shape.
   * @param imageUrl       - Url of the image.
   * @return image id
   * @throws IOException - if credentials file not found.
   */
  public static BatchUpdatePresentationResponse createImage(String presentationId,
                                                            String slideId,
                                                            String imageUrl)
      throws IOException {
        /* Load pre-authorized user credentials from the environment.
           TODO(developer) - See https://developers.google.com/identity for
            guides on implementing OAuth2 for your application. */
    GoogleCredentials credentials = GoogleCredentials.getApplicationDefault()
        .createScoped(Collections.singleton(SlidesScopes.PRESENTATIONS));
    HttpRequestInitializer requestInitializer = new HttpCredentialsAdapter(
        credentials);

    // Create the slides API client
    Slides service = new Slides.Builder(new NetHttpTransport(),
        GsonFactory.getDefaultInstance(),
        requestInitializer)
        .setApplicationName("Slides samples")
        .build();

    // Create a new image, using the supplied object ID, with content downloaded from imageUrl.
    List<Request> requests = new ArrayList<>();
    String imageId = "MyImageId_01";
    Dimension emu4M = new Dimension().setMagnitude(4000000.0).setUnit("EMU");
    requests.add(new Request()
        .setCreateImage(new CreateImageRequest()
            .setObjectId(imageId)
            .setUrl(imageUrl)
            .setElementProperties(new PageElementProperties()
                .setPageObjectId(slideId)
                .setSize(new Size()
                    .setHeight(emu4M)
                    .setWidth(emu4M))
                .setTransform(new AffineTransform()
                    .setScaleX(1.0)
                    .setScaleY(1.0)
                    .setTranslateX(100000.0)
                    .setTranslateY(100000.0)
                    .setUnit("EMU")))));

    BatchUpdatePresentationResponse response = null;
    try {
      // Execute the request.
      BatchUpdatePresentationRequest body =
          new BatchUpdatePresentationRequest().setRequests(requests);
      response = service.presentations().batchUpdate(presentationId, body).execute();
      CreateImageResponse createImageResponse = response.getReplies().get(0).getCreateImage();
      // Prints the created image id.
      System.out.println("Created image with ID: " + createImageResponse.getObjectId());
    } catch (GoogleJsonResponseException e) {
      // TODO(developer) - handle error appropriately
      GoogleJsonError error = e.getDetails();
      if (error.getCode() == 404) {
        System.out.printf("Presentation not found with id '%s'.\n", presentationId);
      } else {
        throw e;
      }
    }
    return response;
  }
}

JavaScript

slide/snippet/slide_create_image.js

Visualizza su GitHub

function createImage(presentationId, pageId, IMAGE_URL, callback) {
  const imageUrl = IMAGE_URL;
  // Create a new image, using the supplied object ID, with content downloaded from imageUrl.
  const requests = [];
  const imageId = 'MyImage_02';
  const emu4M = {
    magnitude: 4000000,
    unit: 'EMU',
  };
  requests.push({
    createImage: {
      objectId: imageId,
      url: imageUrl,
      elementProperties: {
        pageObjectId: pageId,
        size: {
          height: emu4M,
          width: emu4M,
        },
        transform: {
          scaleX: 1,
          scaleY: 1,
          translateX: 100000,
          translateY: 100000,
          unit: 'EMU',
        },
      },
    },
  });
  // Execute the request.
  try {
    gapi.client.slides.presentations.batchUpdate({
      presentationId: presentationId,
      requests: requests,
    }).then((response) => {
      const createImageResponse = response.result.replies;
      console.log(`Created image with ID: ${createImageResponse[0].createImage.objectId}`);
      if (callback) callback(createImageResponse);
    });
  } catch (err) {
    document.getElementById('content').innerText = err.message;
    return;
  }
}

Node.js

slide/snippet/slide_create_image.js

Visualizza su GitHub

/**
 * Adds an image to a presentation.
 * @param {string} presentationId The presentation ID.
 * @param {string} pageId The presentation page ID.
 */
async function createImage(presentationId, pageId) {
  const {GoogleAuth} = require('google-auth-library');
  const {google} = require('googleapis');

  const auth = new GoogleAuth({
    scopes: 'https://www.googleapis.com/auth/presentations',
  });

  const service = google.slides({version: 'v1', auth});

  const imageUrl =
    'https://www.google.com/images/branding/googlelogo/2x/googlelogo_color_272x92dp.png';
  // Create a new image, using the supplied object ID, with content downloaded from imageUrl.
  const imageId = 'MyImage_01';
  const emu4M = {
    magnitude: 4000000,
    unit: 'EMU',
  };
  const requests = [
    {
      createImage: {
        objectId: imageId,
        url: imageUrl,
        elementProperties: {
          pageObjectId: pageId,
          size: {
            height: emu4M,
            width: emu4M,
          },
          transform: {
            scaleX: 1,
            scaleY: 1,
            translateX: 100000,
            translateY: 100000,
            unit: 'EMU',
          },
        },
      },
    },
  ];

  // Execute the request.
  try {
    const response = await service.presentations.batchUpdate({
      presentationId,
      resource: {requests},
    });
    const createImageResponse = response.data.replies;
    console.log(
        `Created image with ID: ${createImageResponse[0].createImage.objectId}`,
    );
    return createImageResponse;
  } catch (err) {
    // TODO (developer) - Handle exception
    throw err;
  }
}

PHP

slides/snippets/src/SlidesCreateImage.php

Visualizza su GitHub

use Google\Client;
use Google\Service\Drive;
use Google\Service\Slides;
use Google\Service\Slides\Request;


function createImage($presentationId, $pageId)
{
    /* Load pre-authorized user credentials from the environment.
    TODO(developer) - See https://developers.google.com/identity for
        guides on implementing OAuth2 for your application. */
    $client = new Google\Client();
    $client->useApplicationDefaultCredentials();
    $client->addScope(Google\Service\Drive::DRIVE);
    $slidesService = new Google_Service_Slides($client);

    try {

        $imageUrl = 'https://www.google.com/images/branding/googlelogo/2x/googlelogo_color_272x92dp.png';
        // Create a new image, using the supplied object ID, with content downloaded from imageUrl.
        $imageId = 'MyImage_01asdfsadfasdf';
        $emu4M = array('magnitude' => 4000000, 'unit' => 'EMU');
        $requests[] = new Google_Service_Slides_Request(array(
            'createImage' => array(
                'objectId' => $imageId,
                'url' => $imageUrl,
                'elementProperties' => array(
                    'pageObjectId' => $pageId,
                    'size' => array(
                        'height' => $emu4M,
                        'width' => $emu4M
                    ),
                    'transform' => array(
                        'scaleX' => 1,
                        'scaleY' => 1,
                        'translateX' => 100000,
                        'translateY' => 100000,
                        'unit' => 'EMU'
                    )
                )
            )
        ));

        // Execute the request.
        $batchUpdateRequest = new Google_Service_Slides_BatchUpdatePresentationRequest(array(
            'requests' => $requests
        ));
        $response = $slidesService->presentations->batchUpdate($presentationId, $batchUpdateRequest);
        $createImageResponse = $response->getReplies()[0]->getCreateImage();
        printf("Created image with ID: %s\n", $createImageResponse->getObjectId());

        return $response;
    } catch (Exception $e) {
        echo 'Message: ' . $e->getMessage();
    }
}

Python

slides/snippets/slides_create_image.py

Visualizza su GitHub

import google.auth
from googleapiclient.discovery import build
from googleapiclient.errors import HttpError


def create_image(presentation_id, page_id):
  """
  Creates images the user has access to.
  Load pre-authorized user credentials from the environment.
  TODO(developer) - See https://developers.google.com/identity
  for guides on implementing OAuth2 for the application.
  """

  creds, _ = google.auth.default()
  # pylint: disable=maybe-no-member
  try:
    service = build("slides", "v1", credentials=creds)
    # pylint: disable = invalid-name
    IMAGE_URL = (
        "https://www.google.com/images/branding/"
        "googlelogo/2x/googlelogo_color_272x92dp.png"
    )
    # pylint: disable=invalid-name
    requests = []
    image_id = "MyImage_11"
    emu4M = {"magnitude": 4000000, "unit": "EMU"}
    requests.append(
        {
            "createImage": {
                "objectId": image_id,
                "url": IMAGE_URL,
                "elementProperties": {
                    "pageObjectId": page_id,
                    "size": {"height": emu4M, "width": emu4M},
                    "transform": {
                        "scaleX": 1,
                        "scaleY": 1,
                        "translateX": 100000,
                        "translateY": 100000,
                        "unit": "EMU",
                    },
                },
            }
        }
    )

    # Execute the request.
    body = {"requests": requests}
    response = (
        service.presentations()
        .batchUpdate(presentationId=presentation_id, body=body)
        .execute()
    )
    create_image_response = response.get("replies")[0].get("createImage")
    print(f"Created image with ID: {(create_image_response.get('objectId'))}")

    return response
  except HttpError as error:
    print(f"An error occurred: {error}")
    print("Images not created")
    return error


if __name__ == "__main__":
  # Put the presentation_id, Page_id of slides whose list needs
  # to be submitted.
  create_image("12SQU9Ik-ShXecJoMtT-LlNwEPiFR7AadnxV2KiBXCnE", "My2ndpage")

Ruby

slides/snippets/lib/file_snippets.rb

Visualizza su GitHub

# Create a new image, using the supplied object ID, with content downloaded from image_url.
requests = []
image_id = 'MyImage_01'
emu4M = {
  magnitude: '4000000',
  unit:      'EMU'
}
requests << {
  create_image: {
    object_id_prop:     image_id,
    url:                IMAGE_URL,
    element_properties: {
      page_object_id: page_id,
      size:           {
        height: emu4M,
        width:  emu4M
      },
      transform:      {
        scale_x:     '1',
        scale_y:     '1',
        translate_x: '100000',
        translate_y: '100000',
        unit:        'EMU'
      }
    }
  }
}

# Execute the request.
req = Google::Apis::SlidesV1::BatchUpdatePresentationRequest.new(requests: requests)
response = slides_service.batch_update_presentation(
  presentation_id,
  req
)
create_image_response = response.replies[0].create_image
puts "Created image with ID: #{create_image_response.object_id}"

Se vuoi aggiungere immagini private o locali a una slide, devi prima renderle disponibili su un URL pubblicamente accessibile. Una possibile opzione consiste nel caricare le immagini su Google Cloud Storage e utilizzare URL firmati con un TTL di 15 minuti. Le immagini caricate vengono eliminate automaticamente dopo 15 minuti.