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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
<?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:

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