BGRABitmap tutorial

From Free Pascal wiki

Deutsch (de) English (en) español (es) français (fr) русский (ru)

Home | Tutorial 1 | Tutorial 2 | Tutorial 3 | Tutorial 4 | Tutorial 5 | Tutorial 6 | Tutorial 7 | Tutorial 8 | Tutorial 9 | Tutorial 10 | Tutorial 11 | Tutorial 12 | Tutorial 13 | Tutorial 14 | Tutorial 15 | Tutorial 16 | Edit

Welcome to the index of the tutorials for the BGRABitmap library. You can browse tutorials by number with the bar on the top, or by the following categories:

Install BGRABitmap and draw basic shapes

TBGRABitmap images have drawing functions using floating point coordinates or integer coordinates.

Textures and scanners

Pixels are a table in memory containing values in the TBGRAPixel format. At this level, we can do various operations:

Other drawing contexts

It is possible to have other contexts, that provide/allow other basic drawing functions:


You can use BGRABitmap to improve TAChart rendering.

You can use it as well to display icons with the SVG Image List.

More classes are available (you need to create them when you need them):

  • TBGRATextEffect, in unit BGRATextFX, allows to prepare the drawing of text line, to add effects like contour and shadow.
  • TBGRALayeredBitmap, in unit BGRALayers, allow to create a multi-layered bitmap. Units BGRAPaintNet and BGRAOpenRaster contain implementations to read and write in Paint.NET format (read only) and OpenRaster format (read and write).
  • Units BGRAGradientScanner and BGRATransform contain scanners to do various effects.
  • Unit BGRAGradients contain procedures to generate gradients and TPhongShading class for Phong shading.
  • TBGRACompressableBitmap, in unit BGRACompressableBitmap, allow to store and compress images.

Other units contient low level functions, and you should not need to use them for a normal usage.