v2.0.0

Summary

• Added common controls and expanded the set of pickers
• Significant internal refactoring and type renames
• improved repainting logic and window-message handling.

New controls:

• TTurboScrollBox — a scrollable container with immediate visual updates after scrolling and an OnScroll event.
• TTurboDropDownButton — a button that can show a drop-down popup menu.
• New picker components: TTurboLinePicker, TTurboFloatLinePicker, TTurboAxisPicker, TTurboFloatAxisPicker (+ corresponding OnGetShader/OnShader hooks).

Renamed/refactored modules and types:

• TurboExternalGraphics.pas -> TurboGraphics.pas
• TTurboFloatRange -> TTurboRangeF

New/public API additions:

• SetParams, SetValue methods with an optional NeedUpdateRangeBitmap flag.
• Redraw(NeedUpdateRangeBitmap) helper.

Focus / message handling:

• TTurboCustomCell invalidates itself on focus gain/lose (WM_SETFOCUS / WM_KILLFOCUS).
• TTurboCustomControl gained WM_CANCELMODE handling and a published OnCancelMode.

v1.0.0

First stable release of TurboControls

Summary

First release of TurboControls — a collection of components for Lazarus/Free Pascal.
Ready for evaluation and integration in Lazarus projects.

Included components:

• TTurboHslLinePicker, TTurboHsvLinePicker — linear hue/saturation/value/lightness controls with synchronization.
• TTurboRgbLinePicker — separate R/G/B controls.
• TTurboAlphaLinePicker — alpha slider and preview integration.
• TTurboHslAxisPicker, TTurboHsvAxisPicker — 2D axis pickers for Saturation/Lightness and Saturation/Value.
• TTurboColorCell — palette cell with selection API.

Compatibility & requirements

• Lazarus/Free Pascal
• Tested on Windows x86_64 (prebuilt demo included); should work on other platforms supported by Lazarus.

License & contribution

• See LICENSE.txt for license terms.
• Please file issues and feature requests via GitHub Issues. Contributions welcome via PRs.