Create, Move, and Delete Text, Images and Path

ComPDFKit provides comprehensive methods for creating, moving, and deleting text, images and path.

Performing Actions Through CPDFReaderView

CPDFReaderView provides basic interactive capabilities by default, allowing the user to create and delete text, images and path, drag and drop to move the position of images, text blocks and path, resize images, text blocks and path, etc. by using the mouse and keyboard.

Configure the Context Menu.

If you need to copy, paste, cut, or delete text, images and path, you can add these methods to the context menu through the setContextMenuShowListener event of CPDFReaderView.

This example shows how to configure the context menu:

edit_text_area_menu_layout.xml:

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:orientation="horizontal">  <TextView  android:id="@+id/edit_copy"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:textSize="12sp"  android:gravity="center"  android:text="copy" />  <TextView  android:id="@+id/edit_paste"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:textSize="12sp"  android:gravity="center"  android:text="paste" />  <TextView  android:id="@+id/edit_delete"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:textSize="12sp"  android:gravity="center"  android:text="delete" />  </LinearLayout>

java

public class DemoContextMenuHelper extends CPDFContextMenuShowHelper {   public DemoContextMenuHelper(CPDFReaderView cpdfReaderView) {  super(cpdfReaderView);  }   @Override  public View getEditTextAreaContentView(CPDFPageView cpdfPageView, LayoutInflater layoutInflater, CPDFEditSelections cpdfEditSelections) {  View contentView = layoutInflater.inflate(R.layout.edit_text_area_menu_layout, null);  invokeOnClickListener(contentView, v -> {  try {  int id = v.getId();  if (id == R.id.edit_copy) {  pageView.operateEditTextArea(CPDFPageView.EditTextAreaFuncType.COPY);  } else if (id == R.id.edit_paste) {  pageView.operateEditText(CPDFPageView.EditTextFuncType.PASTE);  } else if (id == R.id.edit_delete) {  pageView.operateEditTextArea(CPDFPageView.EditTextAreaFuncType.DELETE);  }  } finally {  dismissContextMenu();  }  }, R.id.edit_copy, R.id.edit_paste, R.id.edit_delete);  return contentView;  } } ... // Initialize CPDFReaderView. CPDFReaderView readerView = findViewById(R.id.readerView); CPDFDocument document = new CPDFDocument(context); document.open(pdfPath); readerView.setPDFDocument(document); // Set a custom context menu. readerView.setContextMenuShowListener(new DemoContextMenuHelper(readerView));

kotlin

class DemoContextMenuHelper(cpdfReaderView: CPDFReaderView) : CPDFContextMenuShowHelper(cpdfReaderView) {   override fun getEditTextAreaContentView(  cpdfPageView: CPDFPageView,  layoutInflater: LayoutInflater,  cpdfEditSelections: CPDFEditSelections  ): View {    val contentView: View = layoutInflater.inflate(R.layout.edit_text_area_menu_layout, null)  invokeOnClickListener(contentView, { v: View ->  try {  val id = v.id  if (id == R.id.edit_copy) {  pageView.operateEditTextArea(CPDFPageView.EditTextAreaFuncType.COPY)  } else if (id == R.id.edit_paste) {  pageView.operateEditText(CPDFPageView.EditTextFuncType.PASTE)  } else if (id == R.id.edit_delete) {  pageView.operateEditTextArea(CPDFPageView.EditTextAreaFuncType.DELETE)  }  } finally {  dismissContextMenu()  }  }, R.id.edit_copy, R.id.edit_paste, R.id.edit_delete)  return contentView  } } ... // Initialize CPDFReaderView val readerView = findViewById<CPDFReaderView>(R.id.readerView) val document = CPDFDocument(context) document.open(pdfPath) readerView.pdfDocument = document // Set a custom context menu. readerView.contextMenuShowListener = DemoContextMenuHelper(readerView)

Inserting Text and Images

You can specify the ability to insert text and image blocks through the beginEdit method of CPDFEditManager. The following code shows how to achieve this:

CPDFEditManager editManager = cpdfReaderView.getEditManager(); // Insert Image editManager.beginEdit(CPDFEditPage.LoadImage); // Insert Text editManager.beginEdit(CPDFEditPage.LoadText); // Cancel editManager.beginEdit(CPDFEditPage.LoadNone);

You can also insert an image by tapping the PDF page area.

private CImageResultLauncher imageResultLauncher = new CImageResultLauncher(this);  // This callback is triggered when the PDF page area is tapped cpdfReaderView.setSelectImageCallback(() -> {  // Implement your own image selection functionality  imageResultLauncher.launch(RequestType.PHOTO_ALBUM,  result -> cpdfReaderView.addEditImage(result)); });