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| unit CThermometre;
interface
uses
System.SysUtils, System.Classes, System.UITypes,
FMX.Types, FMX.Controls, FMX.Objects,FMX.Graphics,
Data.Bind.Components;
type
[ObservableMembers('Progress',false)]
TThermometre = class(TRectangle)
private
FProgress: integer;
procedure SetProgress(const Value: integer);
procedure ObserverToggle(const AObserver: IObserver; const Value: Boolean);
{ Déclarations privées }
protected
{ Déclarations protégées }
function CanObserve(const ID: Integer): Boolean; override; { declaration is in System.Classes }
procedure ObserverAdded(const ID: Integer; const Observer: IObserver); override; { declaration is in System.Classes }
procedure OnResize;
public
constructor Create(AOwner: TComponent); override;
function Paint: Boolean; reintroduce;
{ Déclarations publiques }
published
{ Déclarations publiées }
property Progress : integer {read FProgress} write SetProgress;
end;
procedure Register;
implementation
procedure Register;
begin
RegisterComponents('Samples', [TThermometre]);
end;
{ TRectangle1 }
function TThermometre.CanObserve(const ID: Integer): Boolean;
begin
case ID of
TObserverMapping.EditLinkID, TObserverMapping.ControlValueID:
Result := True;
else
Result := False;
end;
end;
constructor TThermometre.create(AOwner: TComponent);
var pos : single;
aBrush : TBrush;
begin
if not(csloading in ComponentState) then
begin
inherited;
width:=30;
height:=110;
Xradius:=10;
Yradius:=10;
FProgress:=50;
pos:=0.5;
if pos=1 then pos:=1-0.000001;
aBrush:=TBrush.Create(TBrushKind.Gradient,Talphacolors.null);
try
aBrush.Gradient.StartPosition.X:=0.5;
aBrush.Gradient.StartPosition.Y:=1;
aBrush.Gradient.StopPosition.X:=0.5;
aBrush.Gradient.StopPosition.Y:=0;
aBrush.Gradient.Points.Clear;
aBrush.Gradient.Points.Add;
aBrush.Gradient.Points[0].Color:=Talphacolors.red;
aBrush.Gradient.Points[0].Offset:=0;
aBrush.Gradient.Points.Add;
aBrush.Gradient.Points[1].Color:=Talphacolors.red;
aBrush.Gradient.Points[1].Offset:=pos;
aBrush.Gradient.Points.Add;
aBrush.Gradient.Points[2].Color:=Talphacolors.null;
aBrush.Gradient.Points[2].Offset:=pos+0.000001;
aBrush.Gradient.Points.Add;
aBrush.Gradient.Points[3].Color:=Talphacolors.null;
aBrush.Gradient.Points[3].Offset:=1;
Fill:=aBrush;
finally
aBrush.Free;
end;
end;
end;
procedure TThermometre.ObserverAdded(const ID: Integer;
const Observer: IObserver);
begin
if ID = TObserverMapping.EditLinkID then
Observer.OnObserverToggle := ObserverToggle;
end;
procedure TThermometre.ObserverToggle(const AObserver: IObserver;
const Value: Boolean);
var
LEditLinkObserver: IEditLinkObserver;
begin
if Value then
begin
if Supports(AObserver, IEditLinkObserver, LEditLinkObserver) then
Enabled := not LEditLinkObserver.IsReadOnly;
end
else
Enabled := True;
end;
procedure TThermometre.OnResize;
begin
Paint;
end;
function TThermometre.Paint: Boolean;
var pos : single;
begin
BeginUpDate;
pos:=(FProgress/100);
if pos=1 then pos:=1-0.000001;
Fill.Gradient.Points.Clear;
Fill.Gradient.Points.Add;
Fill.Gradient.Points[0].Color:=Talphacolors.red;
Fill.Gradient.Points[0].Offset:=0;
Fill.Gradient.Points.Add;
Fill.Gradient.Points[1].Color:=Talphacolors.red;
Fill.Gradient.Points[1].Offset:=pos;
Fill.Gradient.Points.Add;
Fill.Gradient.Points[2].Color:=Talphacolors.null;
Fill.Gradient.Points[2].Offset:=pos+0.000001;
Fill.Gradient.Points.Add;
Fill.Gradient.Points[3].Color:=Talphacolors.null;
Fill.Gradient.Points[3].Offset:=1;
EndUpdate;
result:=true;
end;
procedure TThermometre.SetProgress(const Value: integer);
begin
if FProgress<>Value then
begin
FProgress := Value;
Paint;
end;
end;
initialization
Data.Bind.Components.RegisterValuePropertyName
(TArray<TClass>.create(TThermometre), 'Progress', 'FMX');
finalization
Data.Bind.Components.UnregisterValuePropertyName
(TArray<TClass>.create(TThermometre));
end. |
De l'utilisation de ArcDial
Répondre avec citation
Envoyé par Paul TOTH
(bon, ok, ça peut foutre le bordel quand on en fout partout, mais sont sympa des fois)
)
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