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unit gui_mig_boundsize;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, gui_mig_unitvalue;
type
{ TBoundSize }
TBoundSize = class(TObject)
private
FMin: TUnitValue;
FPref: TUnitValue;
FMax: TUnitValue;
FGapPush: Boolean;
public
constructor Create(AMinMaxPref: TUnitValue; ACreateString: string); // overloaded;
constructor Create(AMin: TUnitValue; APreferred: TUnitValue; AMax: TUnitValue; ACreateString: string); // overloaded;
constructor Create(AMin: TUnitValue; APreferred: TUnitValue; AMax: TUnitValue; AGapPush: Boolean; ACreateString: string); // overloaded;
function GetSize(const ASizeType: integer): TUnitValue;
function IsUnset: Boolean;
function GetConstraintString: string;
property Min: TUnitValue read FMin;
property Preferred: TUnitValue read FPref;
property Max: TUnitValue read FMax;
property GapPush: Boolean read FGapPush;
end;
implementation
uses
gui_mig_exceptions;
{ TBoundSize }
function TBoundSize.IsUnset: Boolean;
begin
Result := (FMin = nil) and (FPref = nil) and (FMax = nil);
end;
function TBoundSize.GetConstraintString: string;
begin
Result := 'null';
{$Note TBoundSize.GetConstraintString still needs to be implemented. }
end;
constructor TBoundSize.Create(AMinMaxPref: TUnitValue; ACreateString: string);
begin
Create(AMinMaxPref, AMinMaxPref, AMinMaxPref, ACreateString);
end;
constructor TBoundSize.Create(AMin: TUnitValue; APreferred: TUnitValue;
AMax: TUnitValue; ACreateString: string);
begin
Create(AMin, APreferred, AMax, False, ACreateString);
end;
constructor TBoundSize.Create(AMin: TUnitValue; APreferred: TUnitValue;
AMax: TUnitValue; AGapPush: Boolean; ACreateString: string);
begin
inherited Create;
FMin := AMin;
FPref := APreferred;
FMax := AMax;
FGapPush := AGapPush;
{$Note TBoundSize.Create is incompleted, we still need to handle ACreateString. }
end;
function TBoundSize.GetSize(const ASizeType: integer): TUnitValue;
begin
case ASizetype of
0{MIN}:
result := FMin;
1{PREF}:
result := FPref;
2{MAX}:
result := FMax;
else
raise EIllegalArgument.CreateFmt('Unknown size: %d', [ASizeType]);
end;
end;
end.
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