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| ///////////////////////////////////////////////////////////////////////////
// //
// Copyright (c) 2015 by Charta Software B.V. //
// All rights reserved //
// //
// Version: 1.7.0.83525 //
// Web site: https://pascal.chartasoftware.com/ //
// //
// This code and information are provided "as is" without warranty of //
// any kind. Dissemination of this information or reproduction of //
// this material is strictly forbidden unless prior written permission //
// is obtained from Charta Software B.V.. //
// //
///////////////////////////////////////////////////////////////////////////
unit UserInterface.Mouse;
interface
uses
Geometry._2d.Integer32.Point,
Integer._32,
Integer._32.Positive;
type
TMouseButtonState = class(TObject)
public
LastTime: TPositiveInteger32;
LastPosition: TInteger32Point;
Count: TInteger32;
function HandleRepetition(const Position: TInteger32Point; Time: TPositiveInteger32): TInteger32;
end;
TMouseButton = class(TObject)
public
Up: TMouseButtonState;
Down: TMouseButtonState;
State: TMouseButtonState;
constructor Create(); virtual;
destructor Destroy(); override;
end;
TMouse = class(TObject)
public
Left: TMouseButton;
Middle: TMouseButton;
Right: TMouseButton;
constructor Create(); virtual;
destructor Destroy(); override;
end;
implementation
uses
Mathematics,
Windows.Api.UserInterface;
{ TMouse }
constructor TMouse.Create();
begin
inherited Create();
Left := TMouseButton.Create();
Middle := TMouseButton.Create();
Right := TMouseButton.Create();
end;
destructor TMouse.Destroy();
begin
Left.Free();
Middle.Free();
Right.Free();
inherited Destroy();
end;
{ TMouseButton }
constructor TMouseButton.Create();
begin
inherited Create();
Up := TMouseButtonState.Create();
Down := TMouseButtonState.Create();
end;
destructor TMouseButton.Destroy();
begin
Up.Free();
Down.Free();
inherited Destroy();
end;
{ TMouseButtonState }
function TMouseButtonState.HandleRepetition(const Position: TInteger32Point; Time: TPositiveInteger32): TInteger32;
begin
if (Time - LastTime < GetDoubleClickTime()) and
(Absolute(Position.X - LastPosition.X) < GetSystemMetrics(SM_CXDOUBLECLK) div 2) and
(Absolute(Position.Y - LastPosition.Y) < GetSystemMetrics(SM_CYDOUBLECLK) div 2) then
Inc(Count)
else
Count := 1;
LastTime := Time;
LastPosition := Position;
Result := Count;
end;
end.
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