Управление маркированными и нумерованными списками в презентациях с помощью PHP

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Узнайте, как создавать и форматировать маркированные, маркер-изображения, многоуровневые и нумерованные списки в презентациях PowerPoint и OpenDocument с помощью Aspose.Slides for PHP via Java.

Обзор

Aspose.Slides for PHP via Java позволяет создавать и форматировать маркированные и нумерованные списки в презентациях PowerPoint и OpenDocument. Элемент списка — это абзац, настройки маркера которого управляются через его формат абзаца.

Используйте метод Paragraph::getParagraphFormat для доступа к настройкам списка на уровне абзаца. Основной точкой входа является ParagraphFormat::getBullet, который возвращает объект BulletFormat . С помощью этого объекта вы можете задать тип маркера, символ, изображение, цвет, размер, стиль нумерации и начальный номер.

This article shows how to:

создать маркированный список с пользовательским символом
создать маркер‑изображение
создать многоуровневый список, задав глубину абзаца
создать нумерованный список
просмотреть и изменить форматирование списка в существующей презентации
прочитать фактические маркеры списка и номера вместе с текстом абзаца

Создать маркированный список

To create a bulleted list, add Paragraph objects to a TextFrame and set BulletFormat::setType to BulletType::Symbol. You can then set BulletFormat::setChar, BulletFormat::getColor, and BulletFormat::setHeight to control the bullet appearance.

The following PHP code demonstrates how to create a bulleted list in a slide:

use aspose\slides\BulletType;
use aspose\slides\NullableBool;
use aspose\slides\Paragraph;
use aspose\slides\Presentation;
use aspose\slides\SaveFormat;
use aspose\slides\ShapeType;

function createParagraph($paragraphText)
{
    $paragraph = new Paragraph();
    $paragraph->getParagraphFormat()->getBullet()->setType(BulletType::Symbol);
    $paragraph->getParagraphFormat()->getBullet()->setChar("*");
    $paragraph->getParagraphFormat()->setIndent(15);
    $paragraph->getParagraphFormat()->getBullet()->setBulletHardColor(NullableBool::True);
    $bulletColor = new Java("java.awt.Color", 205, 92, 92);
    $paragraph->getParagraphFormat()->getBullet()->getColor()->setColor($bulletColor);
    $paragraph->getParagraphFormat()->getBullet()->setHeight(100);
    $paragraph->setText($paragraphText);
    return $paragraph;
}

$presentation = new Presentation();
try {
    $slide = $presentation->getSlides()->get_Item(0);

    $autoShape = $slide->getShapes()->addAutoShape(ShapeType::Rectangle, 20, 20, 200, 50);

    $textFrame = $autoShape->getTextFrame();
    $textFrame->getParagraphs()->clear();

    $paragraph1 = createParagraph("The first paragraph");
    $textFrame->getParagraphs()->add($paragraph1);

    $paragraph2 = createParagraph("The second paragraph");
    $textFrame->getParagraphs()->add($paragraph2);

    $presentation->save("symbol_bullets.pptx", SaveFormat::Pptx);
} finally {
    $presentation->dispose();
}

Результат:

Символьные маркеры

Создать нумерованный список

Use numbered lists when the order of items matters. Set BulletFormat::setType to BulletType::Numbered. You can also choose a numbering format with BulletFormat::setNumberedBulletStyle or set BulletFormat::setNumberedBulletStartWith when the list should start from a value other than 1.

The following PHP code shows how to create a numbered list in a slide:

use aspose\slides\BulletType;
use aspose\slides\Paragraph;
use aspose\slides\Presentation;
use aspose\slides\SaveFormat;
use aspose\slides\ShapeType;

$presentation = new Presentation();
try {
    $slide = $presentation->getSlides()->get_Item(0);

    $autoShape = $slide->getShapes()->addAutoShape(ShapeType::Rectangle, 20, 20, 90, 80);

    $textFrame = $autoShape->getTextFrame();
    $textFrame->getParagraphs()->clear();

    $paragraph1 = new Paragraph();
    $paragraph1->getParagraphFormat()->getBullet()->setType(BulletType::Numbered);
    $paragraph1->setText("Apple");
    $textFrame->getParagraphs()->add($paragraph1);

    $paragraph2 = new Paragraph();
    $paragraph2->getParagraphFormat()->getBullet()->setType(BulletType::Numbered);
    $paragraph2->setText("Orange");
    $textFrame->getParagraphs()->add($paragraph2);

    $paragraph3 = new Paragraph();
    $paragraph3->getParagraphFormat()->getBullet()->setType(BulletType::Numbered);
    $paragraph3->setText("Banana");
    $textFrame->getParagraphs()->add($paragraph3);

    $presentation->save("numbered_bullets.pptx", SaveFormat::Pptx);
} finally {
    $presentation->dispose();
}

Результат:

Нумерованные маркеры

Создать маркер‑изображение

Aspose.Slides позволяет заменить обычный символ маркера изображением. Маркеры‑изображения лучше всего работают с простыми картинками, которые остаются разборчивыми при небольшом размере, например иконками или небольшими прозрачными PNG‑файлами.

Note

Ideally, if you plan to replace the regular bullet symbol with an image, it’s best to choose a simple graphic with a transparent background. Such images work well as custom bullet symbols. Keep in mind that the image will be scaled down to a very small size. For that reason, we strongly recommend selecting an image that remains clear and visually effective when used as a bullet in a list.

To create a picture bullet, add an image to Presentation::getImages and assign the returned PPImage object to BulletFormat::getPicture. Set BulletFormat::setType to BulletType::Picture before assigning the image.

Допустим, у нас есть “image.png”:

Изображение для маркеров

The following PHP code shows how to create picture bullets in a slide:

use aspose\slides\BulletType;
use aspose\slides\Images;
use aspose\slides\Paragraph;
use aspose\slides\Presentation;
use aspose\slides\SaveFormat;
use aspose\slides\ShapeType;

function createParagraph($paragraphText, $bulletImage)
{
    $paragraph = new Paragraph();
    $paragraph->getParagraphFormat()->getBullet()->setType(BulletType::Picture);
    $paragraph->getParagraphFormat()->getBullet()->getPicture()->setImage($bulletImage);
    $paragraph->getParagraphFormat()->setIndent(15);
    $paragraph->getParagraphFormat()->getBullet()->setHeight(100);
    $paragraph->setText($paragraphText);
    return $paragraph;
}

$presentation = new Presentation();
try {
    $slide = $presentation->getSlides()->get_Item(0);

    $autoShape = $slide->getShapes()->addAutoShape(ShapeType::Rectangle, 20, 20, 200, 50);

    $textFrame = $autoShape->getTextFrame();
    $textFrame->getParagraphs()->clear();

    $image = Images::fromFile("image.png");
    $bulletImage = $presentation->getImages()->addImage($image);

    $paragraph1 = createParagraph("The first paragraph", $bulletImage);
    $textFrame->getParagraphs()->add($paragraph1);

    $paragraph2 = createParagraph("The second paragraph", $bulletImage);
    $textFrame->getParagraphs()->add($paragraph2);

    $presentation->save("picture_bullets.pptx", SaveFormat::Pptx);
} finally {
    $presentation->dispose();
}

Результат:

Маркер‑изображение

Создать многоуровневый список

Use ParagraphFormat::setDepth to place list items on different levels. Level 0 is the top level, level 1 is nested below it, and so on.

The following PHP code shows how to create a multilevel bulleted list:

use aspose\slides\Paragraph;
use aspose\slides\Presentation;
use aspose\slides\SaveFormat;
use aspose\slides\ShapeType;

$presentation = new Presentation();
try {
    $slide = $presentation->getSlides()->get_Item(0);

    $autoShape = $slide->getShapes()->addAutoShape(ShapeType::Rectangle, 20, 20, 260, 110);

    $textFrame = $autoShape->getTextFrame();
    $textFrame->getParagraphs()->clear();

    $paragraph1 = new Paragraph();
    $paragraph1->getParagraphFormat()->setDepth(0);
    $paragraph1->setText("My text - Depth 0");
    $textFrame->getParagraphs()->add($paragraph1);

    $paragraph2 = new Paragraph();
    $paragraph2->getParagraphFormat()->setDepth(1);
    $paragraph2->setText("My text - Depth 1");
    $textFrame->getParagraphs()->add($paragraph2);

    $paragraph3 = new Paragraph();
    $paragraph3->getParagraphFormat()->setDepth(2);
    $paragraph3->setText("My text - Depth 2");
    $textFrame->getParagraphs()->add($paragraph3);

    $paragraph4 = new Paragraph();
    $paragraph4->getParagraphFormat()->setDepth(3);
    $paragraph4->setText("My text - Depth 3");
    $textFrame->getParagraphs()->add($paragraph4);

    $presentation->save("multilevel_bullets.pptx", SaveFormat::Pptx);
} finally {
    $presentation->dispose();
}

Результат:

Многоуровневый список

Изменить существующий список

To change list formatting in an existing presentation, access the target paragraph and update its ParagraphFormat::getBullet settings. The same properties used to create lists can be used to inspect or modify lists loaded from a PPT, PPTX, or ODP file.

The following PHP code changes the first paragraph in a text frame to use a numbered list style:

use aspose\slides\BulletType;
use aspose\slides\NumberedBulletStyle;
use aspose\slides\Presentation;
use aspose\slides\SaveFormat;

$presentation = new Presentation("input.pptx");
try {
    $slide = $presentation->getSlides()->get_Item(0);

    $autoShape = $slide->getShapes()->get_Item(0);

    $paragraph = $autoShape->getTextFrame()->getParagraphs()->get_Item(0);
    $paragraph->getParagraphFormat()->getBullet()->setType(BulletType::Numbered);
    $paragraph->getParagraphFormat()->getBullet()->setNumberedBulletStyle(NumberedBulletStyle::BulletRomanUCPeriod);
    $paragraph->getParagraphFormat()->getBullet()->setNumberedBulletStartWith(1);
    $paragraph->getParagraphFormat()->setMarginLeft(30);
    $paragraph->getParagraphFormat()->setIndent(-20);

    $presentation->save("updated_list.pptx", SaveFormat::Pptx);
} finally {
    $presentation->dispose();
}

Прочитать фактические значения маркеров

When extracting presentation content, keep list markers alongside paragraph text. Call ParagraphFormat::getEffective and access ParagraphFormatEffectiveData::getBullet to obtain the effective bullet format. Check its getType before reading getActualBulletValue.

For numbered lists, distinguish these three values:

getNumberedBulletStyle determines the format, such as Arabic numbers followed by a period or lowercase letters followed by a period.
getNumberedBulletStartWith specifies the starting number for a group of numbered paragraphs.
getActualBulletValue returns the formatted marker for a particular paragraph. For example, the second item in a list starting at 5 returns 6..

Preserve getDepth with each paragraph to retain its nesting level. The actual marker does not encode the full hierarchy: a nested item can return c. rather than a combined label such as 6.c..

The following self-contained example creates lists, saves them to a presentation, and reloads the presentation to report each paragraph’s text, depth, bullet type, and actual value. The small blue picture marker is created from inline SVG.

use aspose\slides\BulletType;
use aspose\slides\FillType;
use aspose\slides\NullableBool;
use aspose\slides\NumberedBulletStyle;
use aspose\slides\Paragraph;
use aspose\slides\Presentation;
use aspose\slides\SaveFormat;
use aspose\slides\ShapeType;
use aspose\slides\SlideSizeScaleType;
use aspose\slides\SvgImage;

$presentation = new Presentation();
try {
    $presentation->getSlideSize()->setSize(720, 440, SlideSizeScaleType::DoNotScale);
    $slide = $presentation->getSlides()->get_Item(0);

    $shape = $slide->getShapes()->addAutoShape(ShapeType::Rectangle, 30, 20, 660, 400);
    $shape->getFillFormat()->setFillType(FillType::NoFill);
    $shape->getLineFormat()->getFillFormat()->setFillType(FillType::NoFill);

    $textFrame = $shape->getTextFrame();
    $textFrame->getParagraphs()->clear();

    // Создать маркер‑изображение без внешнего файла изображения.
    $svg = new SvgImage("<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16'><rect width='16' height='16' rx='4' fill='#0078D4'/></svg>");
    $bulletImage = $presentation->getImages()->addImage($svg);

    $black = new Java("java.awt.Color", 0, 0, 0);
    $addParagraph = function ($text, $depth, $type, $start, $style) use ($textFrame, $bulletImage, $black) {
        $paragraph = new Paragraph();
        $paragraph->setText($text);

        $format = $paragraph->getParagraphFormat();
        $format->setDepth($depth);
        $format->setMarginLeft(30 + $depth * 40);
        $format->setIndent(-28);
        $format->setSpaceAfter(8);
        $format->getDefaultPortionFormat()->setFontHeight(22);
        $format->getDefaultPortionFormat()->getFillFormat()->setFillType(FillType::Solid);
        $format->getDefaultPortionFormat()->getFillFormat()->getSolidFillColor()->setColor($black);
        $format->getBullet()->setType($type);
        $format->getBullet()->setBulletHardColor(NullableBool::True);
        $format->getBullet()->getColor()->setColor($black);
        if ($type == BulletType::Numbered) {
            $format->getBullet()->setNumberedBulletStyle($style);
            $format->getBullet()->setNumberedBulletStartWith($start);
        } else if ($type == BulletType::Symbol) {
            $format->getBullet()->setChar("\u{2022}");
        } else if ($type == BulletType::Picture) {
            $format->getBullet()->getPicture()->setImage($bulletImage);
        }

        $textFrame->getParagraphs()->add($paragraph);
    };

    $addParagraph("First item", 0, BulletType::Numbered, 5, NumberedBulletStyle::BulletArabicPeriod);
    $addParagraph("Second item", 0, BulletType::Numbered, 5, NumberedBulletStyle::BulletArabicPeriod);
    $addParagraph("Nested item", 1, BulletType::Numbered, 3, NumberedBulletStyle::BulletAlphaLCPeriod);
    $addParagraph("Next nested item", 1, BulletType::Numbered, 3, NumberedBulletStyle::BulletAlphaLCPeriod);
    $addParagraph("Deep item", 2, BulletType::Numbered, 4, NumberedBulletStyle::BulletRomanLCPeriod);
    $addParagraph("Back to top level", 0, BulletType::Numbered, 5, NumberedBulletStyle::BulletArabicPeriod);
    $addParagraph("Symbol marker", 0, BulletType::Symbol, 1, NumberedBulletStyle::BulletArabicPeriod);
    $addParagraph("No bullet", 0, BulletType::None, 1, NumberedBulletStyle::BulletArabicPeriod);
    $addParagraph("Picture marker", 0, BulletType::Picture, 1, NumberedBulletStyle::BulletArabicPeriod);
    $presentation->save("actual_bullet_values.pptx", SaveFormat::Pptx);
} finally {
    $presentation->dispose();
}

$loadedPresentation = new Presentation("actual_bullet_values.pptx");
try {
    $loadedShape = $loadedPresentation->getSlides()->get_Item(0)->getShapes()->get_Item(0);
    echo "Text | Depth | Type | Actual value\n";
    $paragraphs = $loadedShape->getTextFrame()->getParagraphs();
    for ($i = 0; $i < java_values($paragraphs->getCount()); $i++) {
        $paragraph = $paragraphs->get_Item($i);
        $bullet = $paragraph->getParagraphFormat()->getEffective()->getBullet();
        switch (java_values($bullet->getType())) {
            case BulletType::Numbered:
            case BulletType::Symbol:
                $marker = $bullet->getActualBulletValue();
                break;
            case BulletType::None:
                $marker = "null (no bullet)";
                break;
            case BulletType::Picture:
                $marker = "null (image required)";
                break;
            default:
                $marker = "unsupported bullet type";
                break;
        }
        $typeNames = [BulletType::Numbered => "Numbered", BulletType::Symbol => "Symbol", BulletType::None => "None", BulletType::Picture => "Picture"];
        $typeName = $typeNames[java_values($bullet->getType())] ?? "Unknown";
        echo $paragraph->getText() . " | " . $paragraph->getParagraphFormat()->getDepth() . " | " . $typeName . " | " . $marker . "\n";
    }
} finally {
    $loadedPresentation->dispose();
}

Исходные списки показаны ниже.

Списки, начинающиеся с 5, вложенные элементы с буквами и римскими цифрами, символьный маркер, абзац без маркера и синий маркер‑изображение

Отчет соответствует маркерам, отображаемым в PowerPoint:

Text | Depth | Type | Actual value
First item | 0 | Numbered | 5.
Second item | 0 | Numbered | 6.
Nested item | 1 | Numbered | c.
Next nested item | 1 | Numbered | d.
Deep item | 2 | Numbered | iv.
Back to top level | 0 | Numbered | 7.
Symbol marker | 0 | Symbol | •
No bullet | 0 | None | null (no bullet)
Picture marker | 0 | Picture | null (image required)

For BulletType::None and BulletType::Picture, getActualBulletValue returns null, not an empty string. Handle these types separately: the former has no marker, while the latter requires extracting the bullet image separately. A picture bullet cannot be reproduced solely by extracting a text marker.

Часто задаваемые вопросы

Можно ли экспортировать маркированные и нумерованные списки в PDF или изображения?

Yes. Aspose.Slides preserves list formatting when the target format supports the corresponding text layout and bullet features.

Могу ли я редактировать списки в существующих презентациях?

Yes. Load the presentation, access the target paragraph, inspect or update its ParagraphFormat::getBullet settings, and save the presentation.

Могут ли списки содержать нелатинский текст?

Yes. List item text can contain Unicode characters, so you can create lists in multilingual presentations. Make sure the fonts used in the presentation support the characters you need.

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