Shape Animation

Animations are visual effects that can be applied to texts, images, shapes, or charts. They give life to presentations or its constituents.

Why Use Animations in Presentations?

Using animations, you can

• control the flow of information
• emphasize important points
• increase interest or participation among your audience
• make content easier to read or assimilate or process
• draw your readers or viewers attention to important parts in a presentation

PowerPoint provides many options and tools for animations and animation effects across the entrance, exit, emphasis, and motion paths categories.

Animations in Aspose.Slides

• Aspose.Slides provides the classes and types you need to work with animations under the Aspose.Slides.Animation namespace,
• Aspose.Slides provides over 150 animation effects under the EffectType enumeration. These effects are essentially the same (or equivalent) effects used in PowerPoint.

Apply Animation to TextBox

Aspose.Slides for Python via .NET allows you to apply animation to the text in a shape.

1. Create an instance of the Presentation class.
2. Get a slide’s reference through its index.
3. Add a rectangle IAutoShape.
4. Add text to IAutoShape.TextFrame.
5. Get a main sequence of effects.
6. Add an animation effect to IAutoShape.
7. Set theTextAnimation.BuildType property to the value from BuildType Enumeration.
8. Write the presentation to disk as a PPTX file.

This Python code shows you how to apply the Fade effect to AutoShape and set the text animation to the By 1st Level Paragraphs value:

import aspose.slides as slides

# Instantiates a presentation class that represents a presentation file.
with slides.Presentation() as pres:
    sld = pres.slides[0]
    
    # Adds new AutoShape with text
    autoShape = sld.shapes.add_auto_shape(slides.ShapeType.RECTANGLE, 20, 20, 150, 100)

    textFrame = autoShape.text_frame
    textFrame.text = "First paragraph \nSecond paragraph \n Third paragraph"

    # Gets the main sequence of the slide.
    sequence = sld.timeline.main_sequence

    # Adds Fade animation effect to shape
    effect = sequence.add_effect(autoShape, slides.animation.EffectType.FADE, slides.animation.EffectSubtype.NONE, slides.animation.EffectTriggerType.ON_CLICK)

    # Animates shape text by 1st level paragraphs
    effect.text_animation.build_type = slides.animation.BuildType.BY_LEVEL_PARAGRAPHS1

    # Save the PPTX file to disk
    pres.save("AnimText_out.pptx", slides.export.SaveFormat.PPTX)

Besides applying animations to text, you can also apply animations to a single Paragraph. See Animated Text.

Apply Animation to PictureFrame

1. Create an instance of the Presentation class.
2. Get a slide’s reference through its index.
3. Add or get a PictureFrame on the slide.
4. Get the main sequence of effects.
5. Add an animation effect to PictureFrame.
6. Write the presentation to disk as a PPTX file.

This Python code shows you how to apply the Fly effect to a picture frame:

import aspose.slides as slides
import aspose.pydrawing as draw


# Instantiates a presentation class that represents a presentation file.
with slides.Presentation() as pres:
    # Load Image to be added in presentaiton image collection
    img = draw.Bitmap("aspose-logo.jpg")
    image = pres.images.add_image(img)

    # Adds picture frame to slide
    picFrame = pres.slides[0].shapes.add_picture_frame(slides.ShapeType.RECTANGLE, 50, 50, 100, 100, image)

    # Gets the main sequence of the slide.
    sequence = pres.slides[0].timeline.main_sequence

    # Adds Fly from Left animation effect to picture frame
    effect = sequence.add_effect(picFrame, slides.animation.EffectType.FLY,  
        slides.animation.EffectSubtype.LEFT, 
        slides.animation.EffectTriggerType.ON_CLICK)

    # Save the PPTX file to disk
    pres.save("AnimImage_out.pptx", slides.export.SaveFormat.PPTX)

Apply Animation to Shape

1. Create an instance of the Presentation class.
2. Get a slide’s reference through its index.
3. Add a rectangle IAutoShape.
4. Add a Bevel IAutoShape (when this object is clicked, the animation gets played).
5. Create a sequence of effects on the bevel shape.
6. Create a custom UserPath.
7. Add commands for moving to the UserPath.
8. Write the presentation to disk as a PPTX file.

This Python code shows you how to apply the PathFootball (path football) effect to a shape:

import aspose.slides.animation as anim
import aspose.slides as slides
import aspose.pydrawing as draw

# Instantiates a Prseetation class that represents a PPTX file
with slides.Presentation() as pres:
    sld = pres.slides[0]

    # Creates PathFootball effect for existing shape from scratch.
    ashp = sld.shapes.add_auto_shape(slides.ShapeType.RECTANGLE, 150, 150, 250, 25)

    ashp.add_text_frame("Animated TextBox")

    # Adds the PathFootBall animation effect.
    pres.slides[0].timeline.main_sequence.add_effect(ashp, 
        anim.EffectType.PATH_FOOTBALL,
        anim.EffectSubtype.NONE, 
        anim.EffectTriggerType.AFTER_PREVIOUS)

    # Creates some kind of "button".
    shapeTrigger = pres.slides[0].shapes.add_auto_shape(slides.ShapeType.BEVEL, 10, 10, 20, 20)

    # Creates a sequence of effects for the button.
    seqInter = pres.slides[0].timeline.interactive_sequences.add(shapeTrigger)

    # Creates a custom user path. Our object will be moved only after the button is clicked.
    fxUserPath = seqInter.add_effect(ashp, 
        anim.EffectType.PATH_USER, 
        anim.EffectSubtype.NONE, 
        anim.EffectTriggerType.ON_CLICK)

    # Adds commands for moving since created path is empty.
    motionBhv = fxUserPath.behaviors[0]

    pts = [draw.PointF(0.076, 0.59)]
    motionBhv.path.add(anim.MotionCommandPathType.LINE_TO, pts, anim.MotionPathPointsType.AUTO, True)
    pts = [draw.PointF(-0.076, -0.59)]
    motionBhv.path.add(anim.MotionCommandPathType.LINE_TO, pts, anim.MotionPathPointsType.AUTO, False)
    motionBhv.path.add(anim.MotionCommandPathType.END, None, anim.MotionPathPointsType.AUTO, False)

    # Writes the PPTX file to disk
    pres.save("AnimExample_out.pptx", slides.export.SaveFormat.PPTX)

Get the Animation Effects Applied to Shape

You may decide to find out the all animation effects applied to a single shape.

This Python code shows you how to get the all effects applied to a specific shape:

import aspose.slides as slides

# Instantiates a presentation class that represents a presentation file.
with slides.Presentation("AnimExample_out.pptx") as pres:
    firstSlide = pres.slides[0]

    # Gets the main sequence of the slide.
    sequence = firstSlide.timeline.main_sequence

    # Gets the first shape on slide.
    shape = firstSlide.shapes[0]

    # Gets all animation effects applied to the shape.
    shapeEffects = sequence.get_effects_by_shape(shape)

    if len(shapeEffects) > 0:
        print("The shape " + shape.name + " has " + str(len(shapeEffects)) + " animation effects.")

Change Animation Effect Timing Properties

Aspose.Slides for Python via .NET allows you to change the Timing properties of an animation effect.

This is the Animation Timing pane in Microsoft PowerPoint:

These are the correspondences between PowerPoint Timing and Effect.Timing properties:

• PowerPoint Timing Start drop-down list matches the Effect.Timing.TriggerType property.
• PowerPoint Timing Duration matches the Effect.Timing.Duration property. The duration of an animation (in seconds) is the total time it takes the animation to complete one cycle.
• PowerPoint Timing Delay matches the Effect.Timing.TriggerDelayTime property.

This is how you change the Effect Timing properties:

1. Apply or get the animation effect.
2. Set new values for the Effect.Timing properties you need.
3. Save the modified PPTX file.

This Python code demonstrates the operation:

import aspose.slides as slides

# Instantiates a presentation class that represents a presentation file.
with slides.Presentation("AnimExample_out.pptx") as pres:
    # Gets the main sequence of the slide.
    sequence = pres.slides[0].timeline.main_sequence

    # Gets the first effect of main sequence.
    effect = sequence[0]

    # Changes effect TriggerType to start on click
    effect.timing.trigger_type = slides.animation.EffectTriggerType.ON_CLICK

    # Changes effect Duration
    effect.timing.duration = 3

    # Changes effect TriggerDelayTime
    effect.timing.trigger_delay_time = 0.5

    # Saves the PPTX file to disk
    pres.save("AnimExample_changed.pptx", slides.export.SaveFormat.PPTX)