动画

本文演示如何使用 Aspose.Slides for Node.js via Java 创建简单动画并管理其顺序。

添加动画

创建一个矩形形状，并在点击时应用淡出效果。

function addAnimation() {
    let presentation = new aspose.slides.Presentation();
    try {
        let slide = presentation.getSlides().get_Item(0);

        let shape = slide.getShapes().addAutoShape(aspose.slides.ShapeType.Rectangle, 50, 50, 100, 100);

        // 淡入效果。
        slide.getTimeline().getMainSequence().addEffect(
            shape, aspose.slides.EffectType.Fade, aspose.slides.EffectSubtype.None, aspose.slides.EffectTriggerType.OnClick);

        presentation.save("animation.pptx", aspose.slides.SaveFormat.Pptx);
    } finally {
        presentation.dispose();
    }
}

访问动画

从幻灯片时间轴检索第一个动画效果。

function accessAnimation() {
    let presentation = new aspose.slides.Presentation("animation.pptx");
    try {
        let slide = presentation.getSlides().get_Item(0);

        // 访问第一个动画效果。
        let effect = slide.getTimeline().getMainSequence().get_Item(0);
    } finally {
        presentation.dispose();
    }
}

移除动画

从序列中移除动画效果。

function removeAnimation() {
    let presentation = new aspose.slides.Presentation("animation.pptx");
    try {
        let slide = presentation.getSlides().get_Item(0);

        if (slide.getTimeline().getMainSequence().length > 0) {
            // 移除第一个效果。
            slide.getTimeline().getMainSequence().removeAt(0);
        }

        presentation.save("animation_removed.pptx", aspose.slides.SaveFormat.Pptx);
    } finally {
        presentation.dispose();
    }
}

顺序动画

添加多个效果，并演示动画发生的顺序。

function sequenceAnimations() {
    let presentation = new aspose.slides.Presentation();
    try {
        let slide = presentation.getSlides().get_Item(0);

        let shape1 = slide.getShapes().addAutoShape(aspose.slides.ShapeType.Rectangle, 50, 50, 100, 100);
        let shape2 = slide.getShapes().addAutoShape(aspose.slides.ShapeType.Ellipse, 200, 50, 100, 100);

        let sequence = slide.getTimeline().getMainSequence();
        sequence.addEffect(
            shape1, aspose.slides.EffectType.Fly, aspose.slides.EffectSubtype.Bottom, aspose.slides.EffectTriggerType.OnClick);
        sequence.addEffect(
            shape2, aspose.slides.EffectType.Fly, aspose.slides.EffectSubtype.Bottom, aspose.slides.EffectTriggerType.OnClick);

        presentation.save("animation_sequence.pptx", aspose.slides.SaveFormat.Pptx);
    } finally {
        presentation.dispose();
    }
}