Aspose.Slides 是一款 PowerPoint管理API，用于讀取，編寫，操作和轉(zhuǎn)換PowerPoint幻燈片的獨立API，可將PowerPoint轉(zhuǎn)換為PDF，PDF/A，XPS，TIFF，HTML，ODP和其他PowerPoint格式。

Aspose API支持流行文件格式處理，并允許將各類文檔導(dǎo)出或轉(zhuǎn)換為固定布局文件格式和最常用的圖像/多媒體格式。

Aspose.Slides for Java最新下載

本文為您提供了在 Java 中鎖定 PowerPoint PPT 形狀的綜合指南。因此，您可以保護 PowerPoint 演示文稿的內(nèi)容。出于多種原因，鎖定形狀可能很有用，包括防止意外更改、保護品牌標(biāo)識、保持布局完整性等。那么，讓我們繼續(xù)看看如何在 Java 演示文稿中鎖定或解鎖形狀。

一、用于鎖定 PowerPoint PPT 中形狀的 Java 庫

要鎖定和解鎖 PowerPoint 演示文稿，我們將使用Aspose.Slides for Java。它是一個功能豐富的 Java 庫，用于創(chuàng)建和操作演示文稿文檔。您可以下載該庫或使用pom.xml中的以下依賴項進行安裝。

<dependency>
<groupId>com.aspose</groupId>
<artifactId>aspose-slides</artifactId>
<version>23.7</version>
<classifier>jdk16</classifier>
</dependency>

二、Java 中的 PowerPoint PPT 鎖定形狀

1. PowerPoint 演示文稿由多種元素組成，例如文本、圖像、音頻等。Aspose.Slides for Java 將每個元素視為 Shape 或從 Shape 派生的 abject。因此，如果鎖定演示文稿中的所有形狀，就可以防止 PPT 被修改。

    Aspose.Slides for Java 將 PowerPoint 形狀分為以下類型：

   • 自動形狀
   • 團體形態(tài)
   • 連接器
   • 鏡框
   • 圖形對象

   現(xiàn)在讓我們看看如何用 Java 鎖定 PowerPoint PPT 中的形狀。

   • 首先，使用Presentation類加載PPT/PPTX 文件。
   • 然后，使用Presentation.getSlides()方法獲取演示文稿中的幻燈片。
   • 對于每張幻燈片，使用ISlide.getShapes()方法訪問其形狀。
   • 對于集合中的每個形狀，執(zhí)行以下步驟：
     • 檢查形狀的類型。
     • 根據(jù)形狀的類型使用合適的鎖。
   • 最后，使用Presentation.save(String, SaveFormat)方法保存演示文稿。

以下代碼示例演示如何使用 Java 鎖定 PowerPoint PPT 中的形狀。

try {
//Load presentation file
Presentation pTemplate = new Presentation("presentation.pptx");

//ISlide object for accessing the slides in the presentation
ISlide slide = pTemplate.getSlides().get_Item(0);

//IShape object for holding temporary shapes
IShape shape;

//Traverse through all the slides in the presentation
for (int slideCount = 0; slideCount < pTemplate.getSlides().size(); slideCount++) {
slide = pTemplate.getSlides().get_Item(slideCount);

//Traverse through all the shapes in the slides
for (int count = 0; count < slide.getShapes().size(); count++) {
shape = slide.getShapes().get_Item(count);

//if shape is auto shape
if (shape instanceof IAutoShape) {
//Type casting to Auto shape and getting auto shape lock
IAutoShape Ashp = (IAutoShape) shape;
IAutoShapeLock AutoShapeLock = (IAutoShapeLock) Ashp.getShapeLock();

//Apply shape locks
AutoShapeLock.setPositionLocked(true);
AutoShapeLock.setSelectLocked(true);
AutoShapeLock.setSizeLocked(true);
}

//if shape is group shape
else if (shape instanceof IGroupShape) {
//Type casting to group shape and getting group shape lock
IGroupShape Group = (IGroupShape) shape;
IGroupShapeLock groupShapeLock = (IGroupShapeLock) Group.getShapeLock();

//Apply shape locks
groupShapeLock.setGroupingLocked(true);
groupShapeLock.setPositionLocked(true);
groupShapeLock.setSelectLocked(true);
groupShapeLock.setSizeLocked(true);
}

//if shape is a connector
else if (shape instanceof IConnector) {
//Type casting to connector shape and getting connector shape lock
IConnector Conn = (IConnector) shape;
IConnectorLock ConnLock = Conn.getShapeLock();

//Apply shape locks
ConnLock.setPositionMove(true);
ConnLock.setSelectLocked(true);
ConnLock.setSizeLocked(true);
}

//if shape is picture frame
else if (shape instanceof IPictureFrame) {
//Type casting to pitcture frame shape and getting picture frame shape lock
IPictureFrame Pic = (IPictureFrame) shape;
IPictureFrameLock PicLock = (IPictureFrameLock) Pic.getShapeLock();

//Apply shape locks
PicLock.setPositionLocked(true);
PicLock.setSelectLocked(true);
PicLock.setSizeLocked(true);
}
}
}
//Save the presentation file
pTemplate.save("ProtectedSample.pptx", SaveFormat.Pptx);
} catch (Exception e) {
}

三、在 Java 中解鎖 PowerPoint 形狀

要解鎖 PowerPoint PPT 中鎖定的形狀，只需將其值設(shè)置為false來關(guān)閉鎖定。值得注意的是，使用 Aspose.Slides for Java 鎖定的形狀無法使用任何其他庫解鎖。

以下代碼示例演示如何使用 Java 解鎖 PPTX 文件中的形狀。

try {
//Load presentation file
Presentation pTemplate = new Presentation("presentation.pptx");

//ISlide object for accessing the slides in the presentation
ISlide slide = pTemplate.getSlides().get_Item(0);

//IShape object for holding temporary shapes
IShape shape;

//Traverse through all the slides in the presentation
for (int slideCount = 0; slideCount < pTemplate.getSlides().size(); slideCount++) {
slide = pTemplate.getSlides().get_Item(slideCount);

//Traverse through all the shapes in the slides
for (int count = 0; count < slide.getShapes().size(); count++) {
shape = slide.getShapes().get_Item(count);

//if shape is auto shape
if (shape instanceof IAutoShape) {
//Type casting to Auto shape and getting auto shape lock
IAutoShape Ashp = (IAutoShape) shape;
IAutoShapeLock AutoShapeLock = (IAutoShapeLock) Ashp.getShapeLock();

//Unlock shape
AutoShapeLock.setPositionLocked(false);
AutoShapeLock.setSelectLocked(false);
AutoShapeLock.setSizeLocked(false);
}

//if shape is group shape
else if (shape instanceof IGroupShape) {
//Type casting to group shape and getting group shape lock
IGroupShape Group = (IGroupShape) shape;
IGroupShapeLock groupShapeLock = (IGroupShapeLock) Group.getShapeLock();

//Unlock shape
groupShapeLock.setGroupingLocked(false);
groupShapeLock.setPositionLocked(false);
groupShapeLock.setSelectLocked(false);
groupShapeLock.setSizeLocked(false);
}

//if shape is a connector
else if (shape instanceof IConnector) {
//Type casting to connector shape and getting connector shape lock
IConnector Conn = (IConnector) shape;
IConnectorLock ConnLock = Conn.getShapeLock();

//Unlock shape
ConnLock.setPositionMove(false);
ConnLock.setSelectLocked(false);
ConnLock.setSizeLocked(false);
}

//if shape is picture frame
else if (shape instanceof IPictureFrame) {
//Type casting to pitcture frame shape and getting picture frame shape lock
IPictureFrame Pic = (IPictureFrame) shape;
IPictureFrameLock PicLock = (IPictureFrameLock) Pic.getShapeLock();

//Unlock shape
PicLock.setPositionLocked(false);
PicLock.setSelectLocked(false);
PicLock.setSizeLocked(false);
}
}
}
//Save the presentation file
pTemplate.save("ProtectedSample.pptx", SaveFormat.Pptx);
} catch (Exception e) {
}

以上便是如何在java中鎖定PPT形狀 ，如您還有關(guān)于產(chǎn)品相關(guān)方面的疑問，可以繼續(xù)瀏覽本系列其他內(nèi)容，也歡迎您加入我們的交流群發(fā)表您遇到的問題。

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