PDFium Component Docs

InvertPdfBitmap procedure

Unit: PDFium
Inverts RGB channels in a rendered 32-bit TBitmap in place for dark-mode or high-contrast viewing

Syntax

procedure InvertPdfBitmap(Bitmap: TBitmap);

Parameters

BitmapTBitmap

Description

The helper forces pf32bit and updates ScanLine pixels directly, so it works after RenderPage or ToBitmap without an extra staging buffer

Use these helpers before displaying, saving, or exporting the rendered bitmap when the reader needs a low-vision colour mode

Remarks

Example

Bitmap := Pdf1.RenderPage(0, 0, Width, Height);
InvertPdfBitmap(Bitmap);

See Also

RenderPage, RenderPage