Display Modes ​

ComPDFKit supports single-page, double-page, and book mode arrangements for documents, facilitating reading through both page flipping and scrolling methods. Additionally, it offers options to set cropping mode and view mode.

Set the Display Mode ​

This example shows how to set the display mode to single continuous:

readerView.setDoublePageMode(false);
readerView.setContinueMode(true);

Explanation of Display Mode Types ​

The code to set the scrolling direction is as follows:

// Vertical scrolling.
readerView.setVerticalMode(true);
// Horizontal scrolling.
readerView.setVerticalMode(false);

The code to set the single-page or double-page mode is as follows:

// Double-page display.
readerView.setDoublePageMode(true);
// Single-page display.
readerView.setDoublePageMode(false);

The code to set whether continuous scrolling is needed is as follows:

readerView.setContinueMode(true);

The code to set whether it is in book mode is as follows:

readerView.setDoublePageMode(true);
readerView.setCoverPageMode(true);

Set the Crop Mode ​

Crop mode refers to a feature in PDF documents that allows the cropping of pages to alter their visible area or dimensions. Crop mode enables users to define the display range of a page, making it visually more aligned with specific requirements.

This example shows how to set the crop mode:

readerView.setCropMode(true);

Set the View Mode ​

When using CPDFReaderView, you may have different business scenarios, such as reading mode, annotation editing mode, document editing mode, etc. Depending on the specific use case, you can achieve your requirements by using the readerView.setViewMode(ViewMode viewMode) method.