Class TScreenObjectTool

Unit

InteractiveTools

Declaration

type TScreenObjectTool = class(TCustomEditScreenObjectTool)

Description

TCustomInteractiveTool is an abstract base class. Its descendants (mainly in InteractiveTools) handle on-screen interaction between the user and the grid or TScreenObjects.

The main procedures in which the interaction is handled are MouseDown, MouseMove and MouseUp. These are called in TframeView.ZoomBoxImage32MouseDown, TframeView.ZoomBoxImage32MouseMove, and TframeView.ZoomBoxImage32MouseUp.

The hints in TfrmGoPhast.frameTopView, TfrmGoPhast.frameFrontView, and TfrmGoPhast.frameSideView are set by the current tool via GetHint, Activate, and Deactivate.

See also

CurrentTool

CurrentTool is the TCustomInteractiveTool that is currently being used to handle the user interaction with TframeView.ZoomBox.

Hierarchy

• TComponent
• TCustomInteractiveTool
• TCustomStoreVerticesTool
• TCustomEditScreenObjectTool
• TScreenObjectTool

Overview

Fields

FSelectLine: TLine;

Methods

	function SelectScreenObjectsInGui(const ToggleSelection: boolean): boolean;
	function ScreenObjectInside(AScreenObject: TScreenObject): boolean; virtual;
	destructor Destroy; override;

Description

Fields

	FSelectLine: TLine;
FSelectLine is used to select TScreenObjects by enclosing them in a polygon. FSelectLine is the TLine used to select the TScreenObjects by enclosing them in a polygon.

Methods

	function SelectScreenObjectsInGui(const ToggleSelection: boolean): boolean;

	function ScreenObjectInside(AScreenObject: TScreenObject): boolean; virtual;

	destructor Destroy; override;
Destroy destroys the current instance of TScreenObjectTool. Do not call Destroy directly. Call Free instead.