Creating Slides Thumbnail Image in Ruby

Aspose.Slides - Generating a Thumbnail from a Slide

To Generate a Thumbnail from a Slide using Aspose.Slides Java for Ruby, call create_thumbnail method of Thumbnail module. Here you can see example code.

Ruby Code


 def create_thumbnail()

    data_dir = File.dirname(File.dirname(File.dirname(File.dirname(__FILE__)))) + '/data/'



    # Instantiate Presentation class that represents the presentation file

    pres = Rjb::import('com.aspose.slides.Presentation').new(data_dir + 'demo.pptx')

    # Access the first slide

    slide = pres.getSlides().get_Item(0)

    # Create a full scale image

    image = slide.getThumbnail()

    # Save the image to disk in JPEG format

    Rjb::import('javax.imageio.ImageIO').write(image, "jpeg", Rjb::import('java.io.File').new(data_dir + "ContentBG_tnail.jpg"))

    puts "Created thumbnail, please check the output file."

end

Aspose.Slides - Generating a Thumbnail from a Slide with User Defined Dimensions

To Generate a Thumbnail from a Slide with user defined Dimensions using Aspose.Slides Java for Ruby, call create_thumbnail_custom_size method of Thumbnail module. Here you can see example code.

Ruby Code


 def create_thumbnail_custom_size()

    data_dir = File.dirname(File.dirname(File.dirname(File.dirname(__FILE__)))) + '/data/'



    # Instantiate Presentation class that represents the presentation file

    pres = Rjb::import('com.aspose.slides.Presentation').new(data_dir + 'demo.pptx')

    # Access the first slide

    slide = pres.getSlides().get_Item(0)

    # User defined dimension

    desired_x = 1200

    desired_y = 800

    # Getting scaled value  of X and Y

    scale_x = (1.0 / pres.getSlideSize().getSize().getWidth()) * desired_x

    scale_y = (1.0 / pres.getSlideSize().getSize().getHeight()) * desired_y

    # Create a full scale image

    image = slide.getThumbnail(scale_x, scale_y)

    # Save the image to disk in JPEG format

    Rjb::import('javax.imageio.ImageIO').write(image, "jpeg", Rjb::import('java.io.File').new(data_dir + "ContentBG_tnail.jpg"))

    puts "Created thumbnail with custom size, please check the output file."

end  

Aspose.Slides - Generating a Thumbnail from a Slide in Notes Slides View

To Generate a Thumbnail from a Slide in Notes Slides View using Aspose.Slides Java for Ruby, call create_thumbnail_in_notes_slides_view method of Thumbnail module. Here you can see example code.

Ruby Code


 def create_thumbnail_in_notes_slides_view()

    data_dir = File.dirname(File.dirname(File.dirname(File.dirname(__FILE__)))) + '/data/'



    # Instantiate Presentation class that represents the presentation file

    pres = Rjb::import('com.aspose.slides.Presentation').new(data_dir + 'demo.pptx')

    # Access the first slide

    slide = pres.getSlides().get_Item(0)

    # User defined dimension

    desired_x = 1200

    desired_y = 800

    # Getting scaled value  of X and Y

    scale_x = (1.0 / pres.getSlideSize().getSize().getWidth()) * desired_x

    scale_y = (1.0 / pres.getSlideSize().getSize().getHeight()) * desired_y

    # Create a full scale image

    image = slide.getNotesSlide().getThumbnail(scale_x, scale_y)

    # Save the image to disk in JPEG format

    Rjb::import('javax.imageio.ImageIO').write(image, "jpeg", Rjb::import('java.io.File').new(data_dir + "ContentBG_tnail.jpg"))

    puts "Created thumbnail in notes slides view, please check the output file."

end  

Aspose.Slides - Generating a Thumbnail of User Defined Window from a Slide

To Generate a Thumbnail of user defined Window from a Slide using Aspose.Slides Java for Ruby, call create_thumbnail_of_user_defined_window method of Thumbnail module. Here you can see example code.

Ruby Code


 def create_thumbnail_of_user_defined_window()

    data_dir = File.dirname(File.dirname(File.dirname(File.dirname(__FILE__)))) + '/data/'



    # Instantiate Presentation class that represents the presentation file

    pres = Rjb::import('com.aspose.slides.Presentation').new(data_dir + 'demo.pptx')

    # Access the first slide

    slide = pres.getSlides().get_Item(0)

    # Create a full scale image

    image = slide.getThumbnail(1,1)

    # Getting the image of desired window inside generated slide thumnbnail

    # BufferedImage window = image.getSubimage(windowX, windowY, windowsWidth, windowHeight);

    window_image = image.getSubimage(100, 100, 200, 200)

    # Save the image to disk in JPEG format

    Rjb::import('javax.imageio.ImageIO').write(image, "jpeg", Rjb::import('java.io.File').new(data_dir + "ContentBG_tnail.jpg"))

    puts "Created thumbnail of user defined window, please check the output file."

end  

Download Running Code

Download Creating Slides Thumbnail Image (Aspose.Slides) from any of the below mentioned social coding sites:

Creating Slides SVG Image in Ruby Managing Slides Transitions in Ruby