Guides

Edit Text and Image Properties

ComPDF supports modifying text and image properties. You can set text and image properties within the getEditSelectTextContentView method of the customized context menu in CPDFReaderView.

Edit Text Properties

ComPDF supports modifying text properties, such as text font size, name, color, alignment, italics, bold, transparency, etc.

This example shows how to set text to 12pt, red, and bold:

java

public class DemoContextMenuHelper extends CPDFContextMenuShowHelper {

  public DemoContextMenuHelper(CPDFReaderView cpdfReaderView) {
    super(cpdfReaderView);
  }

  @Override
  public  View getEditSelectTextContentView(CPDFPageView pageView, LayoutInflater layoutInflater, CPDFEditSelections selections) {
		View contentView = ....
    invokeOnClickListener(contentView, view ->{
      if (view.getId() == R.id.edit_attr){
        CPDFEditTextSelections textSelections = (CPDFEditTextSelections) selections;
        textSelections.setFontSize(12);
        textSelections.setColor(Color.RED);
        textSelections.setBold(true);
        textSelections.setItalic(true);
        textSelections.setAlign(CPDFEditTextArea.PDFEditAlignType.PDFEditAlignLeft);
        textSelections.setTransparancy(255);
        textSelections.setFontName(CPDFEditTextArea.FontTimesRoman);
      }
    }, R.id.edit_attr);
    return contentView;
  }
}

kotlin

public class DemoContextMenuHelper(readerView: CPDFReaderView?) : CPDFContextMenuShowHelper(readerView) {

  override fun getEditTextAreaContentView(
    pageView: CPDFPageView?,
    layoutInflater : LayoutInflater?,
    selections: CPDFEditSelections?
  ): View {
    View contentView = ...
    invokeOnClickListener(pageView, {view ->
       if (view.id == R.id.edit) {
          val textSelections = selections as CPDFEditTextSelections
          textSelections.fontSize = 12F
          textSelections.color = Color.RED
          textSelections.isBold = true
          textSelections.isItalic = true
          textSelections.align = CPDFEditTextArea.PDFEditAlignType.PDFEditAlignLeft
          textSelections.transparancy = 255F
          textSelections.fontName = CPDFEditTextArea.FontTimesRoman
    		}
    }, R.id.edit)
    return contentView
  }
}

The following is a sample code for creating and deleting underlines and deleting text:

java

CPDFEditTextSelections textSelections = (CPDFEditTextSelections)selections;
// Create underscores and strikethroughs for text
textSelections.addUnderline();
textSelections.addStrikethrough();

// Delete the underscores and strikethroughs of the text
textSelections.removeUnderline();
textSelections.removeStrikethrough();

kotlin

val textSelections = selections as CPDFEditTextSelections
// Create underscores and strikethroughs for text
textSelections.addUnderline()
textSelections.addStrikethrough()

// Delete the underscores and strikethroughs of the text
textSelections.removeUnderline()
textSelections.removeStrikethrough()

Edit Image Properties

ComPDF supports modifying image properties, such as rotating, cropping, mirroring, and setting transparency.

This example shows how to rotate an image and set it to semi-transparent:

java

public class DemoContextMenuHelper extends CPDFContextMenuShowHelper {

  public DemoContextMenuHelper(CPDFReaderView cpdfReaderView) {
    super(cpdfReaderView);
  }

  @Override
  public View getEditImageAreaContentView(final CPDFPageView pageView, LayoutInflater layoutInflater, RectF area) {
    View contentView = ...
      this.pageView = pageView;
    invokeOnClickListener(pageView, view ->{
      if (view.getId() == R.id.edit){
        pageView.operateEditImageArea(CPDFPageView.EditImageFuncType.ROTATE, 90.0F);
        pageView.operateEditImageArea(CPDFPageView.EditImageFuncType.TRANCPARENCY, 127.5F);
      }
    }, R.id.edit);
    return contentView;
  }
}

kotlin

public class DemoContextMenuHelper(readerView: CPDFReaderView?) : CPDFContextMenuShowHelper(readerView) {

  @Override
  public View getEditImageAreaContentView(final CPDFPageView pageView, LayoutInflater layoutInflater, RectF area) {
    this.pageView = pageView;
    invokeOnClickListener(pageView, view ->{
      if (view.getId() == R.id.edit){
        pageView.operateEditImageArea(CPDFPageView.EditImageFuncType.ROTATE, 90.0F);
        pageView.operateEditImageArea(CPDFPageView.EditImageFuncType.TRANCPARENCY, 127.5F);
      }
    }, R.id.edit);
    return super.getEditImageAreaContentView(pageView, layoutInflater, area);
  }
}