在 PHP 中管理簡報評論

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使用 Aspose.Slides for PHP via Java 管理簡報評論：快速且輕鬆地在 PowerPoint 簡報中新增、讀取、編輯、回覆及移除評論。

概述

本文說明如何使用 Aspose.Slides for PHP via Java 來管理簡報評論。它會介紹主要的與評論相關的類型，並示範如何向投影片新增評論、存取現有評論、處理回覆與現代評論，以及從簡報中移除評論。

範例涵蓋 PowerPoint 中常見的審閱與協作情境，例如將評論指派給作者、讀取評論文字與中繼資料、建立回覆鏈以及移除選取的評論或全部評論。

在 PowerPoint 中，評論顯示為投影片上的標註。選取評論時會顯示其文字與相關討論。

為何在簡報中加入評論？

在審閱簡報時，可使用評論提供回饋並與同事協作。

Aspose.Slides for PHP via Java 提供以下 API 以處理評論：

The Presentation class, which provides access to the presentation’s comment authors.
The CommentCollection class, which represents the comments associated with an individual author.
The Comment class, which provides information about a comment, including its author, creation time, position, and text.
The CommentAuthor class, which provides information about an author, including their name, initials, and associated comments.

新增投影片評論

以下範例說明如何在 PowerPoint 簡報的投影片中新增評論：

use aspose\slides\Point2DFloat;
use aspose\slides\Presentation;
use aspose\slides\SaveFormat;

$presentation = new Presentation();
try {
    $firstSlide = $presentation->getSlides()->get_Item(0);
    $secondSlide = $presentation->getSlides()->addEmptySlide($presentation->getLayoutSlides()->get_Item(0));
    $author = $presentation->getCommentAuthors()->addAuthor("Jawad", "MF");
    $position = new Point2DFloat(0.2, 0.2);
    $createdTime = new Java("java.util.Date");

    $author->getComments()->addComment("Hello Jawad, this is a slide comment", $firstSlide, $position, $createdTime);
    $author->getComments()->addComment("Hello Jawad, this is the second slide comment", $secondSlide, $position, $createdTime);

    $comments = $firstSlide->getSlideComments($author);
    $arrayClass = new JavaClass("java.lang.reflect.Array");
    $commentCount = java_values($arrayClass->getLength($comments));
    if ($commentCount > 0) {
        $firstComment = $comments[0];
        echo java_values($firstComment->getText()) . PHP_EOL;

        $authorComments = $firstComment->getAuthor()->getComments();
        $commentText = $authorComments->get_Item(0)->getText();
        echo java_values($commentText) . PHP_EOL;
    }

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

存取投影片評論

以下範例說明如何存取 PowerPoint 簡報中已存在的評論：

use aspose\slides\Presentation;

$presentation = new Presentation("Comments1.pptx");
try {
    foreach ($presentation->getCommentAuthors() as $author) {
        foreach ($author->getComments() as $comment) {
            echo "Slide: " . java_values($comment->getSlide()->getSlideNumber()) . PHP_EOL;
            echo "Comment: " . java_values($comment->getText()) . PHP_EOL;
            echo "Author: " . java_values($comment->getAuthor()->getName()) . PHP_EOL;
            echo "Posted at: " . java_values($comment->getCreatedTime()->toString()) . PHP_EOL;
            echo PHP_EOL;
        }
    }
} finally {
    $presentation->dispose();
}

回覆評論

父評論是回覆階層頂端的原始評論。Comment::getParentComment 與 Comment::setParentComment 方法讓您取得或設定評論的父項。

以下範例說明如何新增回覆並檢查產生的評論階層：

use aspose\slides\Point2DFloat;
use aspose\slides\Presentation;
use aspose\slides\SaveFormat;

$presentation = new Presentation();
try {
    $slide = $presentation->getSlides()->get_Item(0);
    $position = new Point2DFloat(10, 10);
    $createdTime = new Java("java.util.Date");

    $author1 = $presentation->getCommentAuthors()->addAuthor("Author_1", "A.A.");
    $comment1 = $author1->getComments()->addComment("comment 1", $slide, $position, $createdTime);

    $author2 = $presentation->getCommentAuthors()->addAuthor("Author_2", "B.B.");
    $reply1 = $author2->getComments()->addComment("reply 1 for comment 1", $slide, $position, $createdTime);
    $reply1->setParentComment($comment1);

    $reply2 = $author2->getComments()->addComment("reply 2 for comment 1", $slide, $position, $createdTime);
    $reply2->setParentComment($comment1);

    $subReply = $author1->getComments()->addComment("subreply 3 for reply 2", $slide, $position, $createdTime);
    $subReply->setParentComment($reply2);

    $author2->getComments()->addComment("comment 2", $slide, $position, $createdTime);
    $comment3 = $author2->getComments()->addComment("comment 3", $slide, $position, $createdTime);

    $reply3 = $author1->getComments()->addComment("reply 4 for comment 3", $slide, $position, $createdTime);
    $reply3->setParentComment($comment3);

    $comments = $slide->getSlideComments(null);
    $arrayClass = new JavaClass("java.lang.reflect.Array");
    $commentCount = java_values($arrayClass->getLength($comments));
    for ($i = 0; $i < $commentCount; $i++) {
        $comment = $comments[$i];
        while (!java_is_null($comment->getParentComment())) {
            echo "\t";
            $comment = $comment->getParentComment();
        }

        echo java_values($comments[$i]->getAuthor()->getName()) . ": " . java_values($comments[$i]->getText()) . PHP_EOL;
    }

    $presentation->save("parent_comment.pptx", SaveFormat::Pptx);

    $comment1->remove();
    $presentation->save("remove_comment.pptx", SaveFormat::Pptx);
} finally {
    $presentation->dispose();
}

Warning

使用 Comment::remove 方法刪除評論時，該評論的所有回覆也會一起被刪除。
若 Comment::setParentComment 產生循環參考，將拋出 PptxEditException。

新增現代評論

現代評論可以關聯至整張投影片、特定形狀，或 AutoShape 內的文字範圍。CommentCollection::addModernComment 方法除了接受投影片與評論標記座標外，還接受一個 Shape 參數。

當 shape 參數傳入 null 時，評論為投影片層級的評論。其標記會依提供的座標定位，但不會與特定形狀關聯，因此 ModernComment::getShape 會回傳 null。若提供了 Shape，則評論會錨定至該形狀。座標仍然定義評論標記在投影片上的位置，而形狀關聯可透過 ModernComment::getShape 取得。

將現代評論錨定至形狀

以下範例同時建立投影片層級的現代評論與錨定至特定 AutoShape 的現代評論，並從每個評論中讀取關聯的形狀。

use aspose\slides\Point2DFloat;
use aspose\slides\Presentation;
use aspose\slides\SaveFormat;
use aspose\slides\ShapeType;

$presentation = new Presentation();
try {
    $slide = $presentation->getSlides()->get_Item(0);
    $author = $presentation->getCommentAuthors()->addAuthor("Reviewer", "RV");
    $shape = $slide->getShapes()->addAutoShape(ShapeType::Rectangle, 50, 50, 300, 80);
    $shape->setName("Revenue title");
    $shape->getTextFrame()->setText("Quarterly revenue");

    $createdTime = new Java("java.util.Date");
    $slideCommentPosition = new Point2DFloat(20, 20);
    $shapeCommentPosition = new Point2DFloat(60, 60);
    $slideComment = $author->getComments()->addModernComment("Review the overall slide layout.", $slide, null, $slideCommentPosition, $createdTime);
    $shapeComment = $author->getComments()->addModernComment("Check this title.", $slide, $shape, $shapeCommentPosition, $createdTime);

    echo (java_is_null($slideComment->getShape()) ? "true" : "false") . PHP_EOL;
    echo java_values($shapeComment->getShape()->getName()) . PHP_EOL;

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

將評論錨定至不同形狀類型

任何由 Shape 類別表示的投影片物件皆可作為形狀錨點。常見範例包括 AutoShape、PictureFrame、GroupShape、Connector 與 GraphicalObject（例如圖表）等實例。

以下範例建立多種常見形狀類型，並為每個形狀關聯一個現代評論。

use aspose\slides\ChartType;
use aspose\slides\Point2DFloat;
use aspose\slides\Presentation;
use aspose\slides\SaveFormat;
use aspose\slides\ShapeType;

$presentation = new Presentation();
try {
    $slide = $presentation->getSlides()->get_Item(0);
    $author = $presentation->getCommentAuthors()->addAuthor("Reviewer", "RV");
    $createdTime = new Java("java.util.Date");

    $autoShape = $slide->getShapes()->addAutoShape(ShapeType::Rectangle, 20, 20, 180, 60);
    $autoShape->getTextFrame()->setText("AutoShape");
    $autoShapeCommentPosition = new Point2DFloat(30, 30);
    $author->getComments()->addModernComment("Comment on an AutoShape.", $slide, $autoShape, $autoShapeCommentPosition, $createdTime);

    $imageBase64 = "iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAIAAAD91JpzAAAAFklEQVR4nGP8//8/AwMDEwMDAwMDAwAkBgMB/DXemwAAAABJRU5ErkJggg==";
    $base64Class = new JavaClass("java.util.Base64");
    $imageData = $base64Class->getDecoder()->decode($imageBase64);
    $image = $presentation->getImages()->addImage($imageData);
    $pictureFrame = $slide->getShapes()->addPictureFrame(ShapeType::Rectangle, 220, 20, 120, 80, $image);
    $pictureCommentPosition = new Point2DFloat(230, 30);
    $author->getComments()->addModernComment("Comment on a picture.", $slide, $pictureFrame, $pictureCommentPosition, $createdTime);

    $groupShape = $slide->getShapes()->addGroupShape();
    $groupShape->getShapes()->addAutoShape(ShapeType::Rectangle, 0, 0, 80, 40);
    $groupShape->getShapes()->addAutoShape(ShapeType::Ellipse, 100, 0, 80, 40);
    $groupCommentPosition = new Point2DFloat(40, 150);
    $author->getComments()->addModernComment("Comment on a group.", $slide, $groupShape, $groupCommentPosition, $createdTime);

    $connector = $slide->getShapes()->addConnector(ShapeType::StraightConnector1, 220, 150, 140, 40);
    $connectorCommentPosition = new Point2DFloat(240, 150);
    $author->getComments()->addModernComment("Comment on a connector.", $slide, $connector, $connectorCommentPosition, $createdTime);

    $chart = $slide->getShapes()->addChart(ChartType::ClusteredColumn, 400, 20, 250, 180);
    $chartCommentPosition = new Point2DFloat(420, 40);
    $author->getComments()->addModernComment("Comment on a graphical object.", $slide, $chart, $chartCommentPosition, $createdTime);

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

將評論錨定至文字並設定其狀態

對於關聯至 AutoShape 的現代評論， ModernComment::getTextSelectionStart 與 ModernComment::setTextSelectionStart 取得形狀文字框中選取文字的起始位置。 ModernComment::getTextSelectionLength 與 ModernComment::setTextSelectionLength 取得選取的長度。這兩個值共同將評論與 AutoShape 內的特定文字範圍關聯起來。

ModernComment::getStatus 與 ModernComment::setStatus 方法存取 ModernCommentStatus 常數中的值：

NotDefined — 未定義特定的現代評論狀態。
Active — 評論為活躍狀態。
Resolved — 評論已解決。
Closed — 評論已關閉。

以下範例建立形狀錨定的現代評論，將其與文字選取關聯，標記為已解決，儲存簡報，並在重新開啟檔案後驗證其值。

use aspose\slides\ModernCommentStatus;
use aspose\slides\Point2DFloat;
use aspose\slides\Presentation;
use aspose\slides\SaveFormat;
use aspose\slides\ShapeType;

$outputFile = "modern_comment_text_anchor.pptx";
$shapeText = "Review the quarterly revenue forecast.";
$selectedText = "quarterly revenue";
$expectedSelectionStart = strpos($shapeText, $selectedText);

$presentation = new Presentation();
try {
    $slide = $presentation->getSlides()->get_Item(0);
    $shape = $slide->getShapes()->addAutoShape(ShapeType::Rectangle, 50, 50, 400, 100);
    $shape->setName("Forecast text");
    $shape->getTextFrame()->setText($shapeText);

    $author = $presentation->getCommentAuthors()->addAuthor("Reviewer", "RV");
    $commentPosition = new Point2DFloat(60, 60);
    $comment = $author->getComments()->addModernComment("Verify this forecast wording.", $slide, $shape, $commentPosition, new Java("java.util.Date"));
    $comment->setTextSelectionStart($expectedSelectionStart);
    $comment->setTextSelectionLength(strlen($selectedText));
    $comment->setStatus(ModernCommentStatus::Resolved);

    $presentation->save($outputFile, SaveFormat::Pptx);
} finally {
    $presentation->dispose();
}

$reopenedPresentation = new Presentation($outputFile);
try {
    $reopenedSlide = $reopenedPresentation->getSlides()->get_Item(0);
    $reopenedComments = $reopenedSlide->getSlideComments(null);
    $modernCommentClass = new JavaClass("com.aspose.slides.ModernComment");

    foreach ($reopenedComments as $reopenedComment) {
        if (!java_instanceof($reopenedComment, $modernCommentClass)) {
            continue;
        }

        $shape = $reopenedComment->getShape();
        $shapeMatches = !java_is_null($shape) && java_values($shape->getName()) === "Forecast text";
        $selectionStartMatches = java_values($reopenedComment->getTextSelectionStart()) === $expectedSelectionStart;
        $selectionLengthMatches = java_values($reopenedComment->getTextSelectionLength()) === strlen($selectedText);
        $statusMatches = java_values($reopenedComment->getStatus()) === ModernCommentStatus::Resolved;

        echo "Shape anchor preserved: " . ($shapeMatches ? "true" : "false") . PHP_EOL;
        echo "Text selection start preserved: " . ($selectionStartMatches ? "true" : "false") . PHP_EOL;
        echo "Text selection length preserved: " . ($selectionLengthMatches ? "true" : "false") . PHP_EOL;
        echo "Resolved status preserved: " . ($statusMatches ? "true" : "false") . PHP_EOL;
    }
} finally {
    $reopenedPresentation->dispose();
}

檢查現有的現代評論

檢查現有簡報時，先判斷每個評論是否為 ModernComment，然後檢查 ModernComment::getShape、ModernComment::getTextSelectionStart、ModernComment::getTextSelectionLength 與 ModernComment::getStatus。null 形狀表示投影片層級的評論。若為 AutoShape 錨點，文字選取方法會指出形狀文字框中的相關範圍。

use aspose\slides\Presentation;

$presentation = new Presentation("comments.pptx");
try {
    $modernCommentClass = new JavaClass("com.aspose.slides.ModernComment");
    $autoShapeClass = new JavaClass("com.aspose.slides.AutoShape");

    foreach ($presentation->getSlides() as $slide) {
        $comments = $slide->getSlideComments(null);
        foreach ($comments as $comment) {
            if (!java_instanceof($comment, $modernCommentClass)) {
                continue;
            }

            echo "Slide: " . java_values($slide->getSlideNumber()) . PHP_EOL;
            echo "Text: " . java_values($comment->getText()) . PHP_EOL;
            echo "Status: " . java_values($comment->getStatus()) . PHP_EOL;

            $shape = $comment->getShape();
            if (java_is_null($shape)) {
                echo "Anchor: slide level" . PHP_EOL;
            } else {
                echo "Anchor shape: " . java_values($shape->getName()) . PHP_EOL;
                echo "Anchor type: " . java_values($shape->getClass()->getSimpleName()) . PHP_EOL;

                if (java_instanceof($shape, $autoShapeClass)) {
                    echo "Text selection start: " . java_values($comment->getTextSelectionStart()) . PHP_EOL;
                    echo "Text selection length: " . java_values($comment->getTextSelectionLength()) . PHP_EOL;
                }
            }

            echo PHP_EOL;
        }
    }
} finally {
    $presentation->dispose();
}

移除評論

移除所有評論及評論作者

以下範例示範如何從簡報中移除所有評論與評論作者：

use aspose\slides\Presentation;
use aspose\slides\SaveFormat;

$presentation = new Presentation("example.pptx");
try {
    foreach ($presentation->getCommentAuthors() as $author) {
        $author->getComments()->clear();
    }

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

移除特定評論

以下範例示範如何從投影片中移除特定評論：

use aspose\slides\Point2DFloat;
use aspose\slides\Presentation;
use aspose\slides\SaveFormat;

$presentation = new Presentation();
try {
    $slide = $presentation->getSlides()->get_Item(0);
    $author = $presentation->getCommentAuthors()->addAuthor("Author", "A");
    $createdTime = new Java("java.util.Date");

    $firstCommentPosition = new Point2DFloat(0.2, 0.2);
    $secondCommentPosition = new Point2DFloat(0.3, 0.2);
    $author->getComments()->addComment("comment 1", $slide, $firstCommentPosition, $createdTime);
    $author->getComments()->addComment("comment 2", $slide, $secondCommentPosition, $createdTime);

    foreach ($presentation->getCommentAuthors() as $commentAuthor) {
        $commentsToRemove = new Java("java.util.ArrayList");
        $comments = $slide->getSlideComments($commentAuthor);

        foreach ($comments as $comment) {
            if ($comment->getText()->equals("comment 1")) {
                $commentsToRemove->add($comment);
            }
        }

        foreach ($commentsToRemove as $comment) {
            $commentAuthor->getComments()->remove($comment);
        }
    }

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

常見問題

Aspose.Slides 是否支援現代評論的已解決狀態？

是的。ModernComment::getStatus 與 ModernComment::setStatus 可存取 ModernCommentStatus 值，其中包括 Resolved。此狀態會儲存在簡報中，重新開啟檔案後仍可讀取。

是否支援串聯討論（回覆鏈），且是否有巢狀深度限制？

是的。每個評論皆可參照其 parent comment，從而形成回覆鏈。API 並未定義具體的巢狀深度上限。

評論標記在投影片上的位置是以哪種座標系統定義的？

標記位置以浮點座標在投影片座標系統中定義，讓您能精確地將其放置於投影片上。

在 PHP 中檢索與更新簡報檢視屬性在 PHP 中管理簡報備註