在 PHP 中管理演示文稿评论
在 PowerPoint 中,评论显示为幻灯片上的注释或批注。单击评论后,会显示其内容或信息。
为什么要向演示文稿添加评论?
在审阅演示文稿时,您可能需要使用评论来提供反馈或与同事交流。
为了让您在 PowerPoint 演示文稿中使用评论,Aspose.Slides for PHP via Java 提供
- The Presentation class, which contains the collections of authors (from the CommentAuthorCollection class). The authors add comments to slides.
- The CommentCollection class, which contains the collection of comments for individual authors.
- The Comment class, which contains information on authors and their comments: who added the comment, the time the comment was added, the comment’s position, etc.
- The CommentAuthor class, which contains information on individual authors: the author’s name, his initials, comments associated with the author’s name, etc.
添加幻灯片评论
下面的 PHP 代码演示如何向 PowerPoint 演示文稿的幻灯片添加评论:
# 实例化 Presentation 类
$pres = new Presentation();
$Array = new java_class("java.lang.reflect.Array");
try {
# 添加空幻灯片
$pres->getSlides()->addEmptySlide($pres->getLayoutSlides()->get_Item(0));
# 添加作者
$author = $pres->getCommentAuthors()->addAuthor("Jawad", "MF");
# 设置评论的位置
$point = new Point2DFloat(0.2, 0.2);
# 为作者在幻灯片 1 上添加幻灯片评论
$author->getComments()->addComment("Hello Jawad, this is slide comment", $pres->getSlides()->get_Item(0), $point, new Java("java.util.Date"));
# 为作者在幻灯片 2 上添加幻灯片评论
$author->getComments()->addComment("Hello Jawad, this is second slide comment", $pres->getSlides()->get_Item(1), $point, new Java("java.util.Date"));
# 访问 ISlide 1
$slide = $pres->getSlides()->get_Item(0);
# 当参数为 null 时,将把所有作者的评论带到选定的幻灯片
$Comments = $slide->getSlideComments($author);
# 访问幻灯片 1 上索引 0 的评论
$str = $Comments[0]->getText();
$pres->save("Comments_out.pptx", SaveFormat::Pptx);
if (java_values($Array->getLength($Comments)) > 0) {
# 选择作者在索引 0 的评论集合
$commentCollection = $Comments[0]->getAuthor()->getComments();
$Comment = $commentCollection->get_Item(0)->getText();
}
} finally {
if (!java_is_null($pres)) {
$pres->dispose();
}
}
访问幻灯片评论
下面的 PHP 代码演示如何访问 PowerPoint 演示文稿中幻灯片的现有评论:
# 实例化 Presentation 类
$pres = new Presentation("Comments1.pptx");
try {
foreach($pres->getCommentAuthors() as $commentAuthor) {
$author = $commentAuthor;
foreach($author->getComments() as $comment1) {
$comment = $comment1;
echo("ISlide :" . $comment->getSlide()->getSlideNumber() . " has comment: " . $comment->getText() . " with Author: " . $comment->getAuthor()->getName() . " posted on time :" . $comment->getCreatedTime() . "\n");
}
}
} finally {
if (!java_is_null($pres)) {
$pres->dispose();
}
}
回复评论
父评论是评论层级或回复链中的顶层(原始)评论。使用 getParentComment 或 setParentComment 方法(来自 Comment 类),您可以设置或获取父评论。
下面的 PHP 代码演示如何添加评论并获取其回复:
$pres = new Presentation();
$Array = new java_class("java.lang.reflect.Array");
try {
# 添加评论
$author1 = $pres->getCommentAuthors()->addAuthor("Author_1", "A.A.");
$comment1 = $author1->getComments()->addComment("comment1", $pres->getSlides()->get_Item(0), new Point2DFloat(10, 10), new Java("java.util.Date"));
# 为 comment1 添加回复
$author2 = $pres->getCommentAuthors()->addAuthor("Autror_2", "B.B.");
$reply1 = $author2->getComments()->addComment("reply 1 for comment 1", $pres->getSlides()->get_Item(0), new Point2DFloat(10, 10), new Java("java.util.Date"));
$reply1->setParentComment($comment1);
# 为 comment1 添加另一个回复
$reply2 = $author2->getComments()->addComment("reply 2 for comment 1", $pres->getSlides()->get_Item(0), new Point2DFloat(10, 10), new Java("java.util.Date"));
$reply2->setParentComment($comment1);
# 为已有回复添加回复
$subReply = $author1->getComments()->addComment("subreply 3 for reply 2", $pres->getSlides()->get_Item(0), new Point2DFloat(10, 10), new Java("java.util.Date"));
$subReply->setParentComment($reply2);
$comment2 = $author2->getComments()->addComment("comment 2", $pres->getSlides()->get_Item(0), new Point2DFloat(10, 10), new Java("java.util.Date"));
$comment3 = $author2->getComments()->addComment("comment 3", $pres->getSlides()->get_Item(0), new Point2DFloat(10, 10), new Java("java.util.Date"));
$reply3 = $author1->getComments()->addComment("reply 4 for comment 3", $pres->getSlides()->get_Item(0), new Point2DFloat(10, 10), new Java("java.util.Date"));
$reply3->setParentComment($comment3);
# 在控制台显示评论层次结构
$slide = $pres->getSlides()->get_Item(0);
$comments = $slide->getSlideComments(null);
for($i = 0; $i < java_values($Array->getLength($comments)) ; $i++) {
$comment = $comments[$i];
while (!java_is_null($comment->getParentComment())) {
System->out->print("\t");
$comment = $comment->getParentComment();
}
echo($comments[$i]->getAuthor()->getName() . " : " . $comments[$i]->getText());
echo();
}
$pres->save("parent_comment.pptx", SaveFormat::Pptx);
# 删除 comment1 及其所有回复
$comment1->remove();
$pres->save("remove_comment.pptx", SaveFormat::Pptx);
} finally {
if (!java_is_null($pres)) {
$pres->dispose();
}
}
Attention
- 当使用 remove 方法(来自 Comment 类)删除评论时,评论的回复也会被删除。
- 如果 setParentComment 设置导致循环引用,将抛出 PptxEditException。
添加现代评论
2021 年,Microsoft 在 PowerPoint 中引入了现代评论。现代评论功能显著提升了 PowerPoint 的协作能力。通过现代评论,PowerPoint 用户可以更轻松地解决评论、将评论锚定到对象和文本,以及进行交互。
Aspose Slides 通过 ModernComment 类支持现代评论。已在 CommentCollection 类中添加了 addModernComment 和 insertModernComment 方法。
下面的 PHP 代码演示如何向 PowerPoint 演示文稿的幻灯片添加现代评论:
$pres = new Presentation();
try {
$newAuthor = $pres->getCommentAuthors()->addAuthor("Some Author", "SA");
$modernComment = $newAuthor->getComments()->addModernComment("This is a modern comment", $pres->getSlides()->get_Item(0), null, new Point2DFloat(100, 100), new Java("java.util.Date"));
$pres->save("pres.pptx", SaveFormat::Pptx);
} finally {
if (!java_is_null($pres)) {
$pres->dispose();
}
}
删除评论
删除所有评论和作者
下面的 PHP 代码演示如何删除演示文稿中的所有评论和作者:
$presentation = new Presentation("example.pptx");
try {
# 删除演示文稿中的所有评论
foreach($presentation->getCommentAuthors() as $author) {
$author->getComments()->clear();
}
# 删除所有作者
$presentation->getCommentAuthors()->clear();
$presentation->save("example_out.pptx", SaveFormat::Pptx);
} finally {
if (!java_is_null($presentation)) {
$presentation->dispose();
}
}
删除特定评论
下面的 PHP 代码演示如何删除幻灯片上的特定评论:
$presentation = new Presentation();
try {
$slide = $presentation->getSlides()->get_Item(0);
# 添加评论...
$author = $presentation->getCommentAuthors()->addAuthor("Author", "A");
$author->getComments()->addComment("comment 1", $slide, new Point2DFloat(0.2, 0.2), new Java("java.util.Date"));
$author->getComments()->addComment("comment 2", $slide, new Point2DFloat(0.3, 0.2), new Java("java.util.Date"));
# 删除所有包含 "comment 1" 文本的评论
foreach($presentation->getCommentAuthors() as $commentAuthor) {
$toRemove = new Java("java.util.ArrayList");
foreach($slide->getSlideComments($commentAuthor) as $comment) {
if ($comment->getText()->equals("comment 1")) {
$toRemove->add($comment);
}
}
foreach($toRemove as $comment) {
$commentAuthor->getComments()->remove($comment);
}
}
$presentation->save("pres.pptx", SaveFormat::Pptx);
} finally {
if (!java_is_null($presentation)) {
$presentation->dispose();
}
}
常见问题
Aspose.Slides 是否支持现代评论的“已解决”状态?
是的。Modern comments 提供了 setStatus 方法;您可以设置 comment’s state(例如标记为已解决),此状态会保存在文件中并被 PowerPoint 识别。
是否支持线程式讨论(回复链),以及是否有限制嵌套层级?
是的。每条评论都可以引用其 parent comment,实现任意深度的回复链。API 未声明具体的嵌套深度限制。
评论标记在幻灯片上的位置使用哪种坐标系定义?
该位置以浮点坐标点存储在幻灯片的坐标系中。这使您能够将评论标记精确放置在所需位置。