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Industrial: Add animation to TOnOffSwitch
git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@9025 8e941d3f-bd1b-0410-a28a-d453659cc2b4
This commit is contained in:
wp_xxyyzz
@ -28,20 +28,27 @@ type
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);
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TSwitchMode = (smClick, smDblClick, smSlide, smSlideDblClick);
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TSwitchOrientation = (soHorizontal, soVertical);
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TSwitchAnimationEffect = (saeBlendColors);
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TSwitchAnimationEffects = set of TSwitchAnimationEffect;
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TCustomOnOffSwitch = class(TCustomControl)
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private
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const
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DEFAULT_BUTTON_SIZE = 24;
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private
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FAnimated: Boolean;
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FAnimationEffects: TSwitchAnimationEffects;
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FAnimationTimer: TTimer;
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FBorderStyle: TSwitchBorderStyle;
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FButtonPos: Integer;
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FButtonSize: Integer;
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FCaptions: array[0..1] of string;
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FChecked: Boolean;
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FCheckedAfterAnimation: Boolean;
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FColors: array [0..2] of TColor;
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FInverse: Boolean;
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FDragging: Boolean;
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FDraggedDistance: Integer;
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FMaxDistance: Integer;
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FFlippedColors: Boolean;
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FTogglePending: Boolean;
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FMousePt: TPoint;
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@ -59,6 +66,7 @@ type
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function GetColors(AIndex: Integer): TColor;
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function GetOrientation: TSwitchOrientation;
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function GetPicture(AIndex: Integer): TPicture;
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procedure SetAnimated(AValue: Boolean);
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procedure SetBorderStyle(AValue: TSwitchBorderStyle); reintroduce;
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procedure SetButtonSize(AValue: Integer);
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procedure SetCaptions(AIndex: Integer; AValue: string);
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@ -70,19 +78,22 @@ type
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procedure SetShowButtonBorder(AValue: Boolean);
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procedure SetShowCaption(AValue: Boolean);
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procedure SetShowFocusRect(AValue: Boolean);
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procedure UpdateButtonPos;
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procedure UpdateMaxDistance;
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procedure WM_EraseBkGnd(var Msg: TMsg); message LM_EraseBkGnd;
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protected
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function CalcButtonRect(ADelta: Integer): TRect;
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function CalcButtonRect: TRect;
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function CalcMargin: Integer;
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function CanChange: Boolean; virtual;
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procedure DblClick; override;
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procedure DblClickTimerHandler(Sender: TObject);
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procedure DoAnimation(Sender: TObject);
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procedure DoAutoAdjustLayout(const AMode: TLayoutAdjustmentPolicy;
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const AXProportion, AYProportion: Double); override;
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procedure DoChange; virtual;
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procedure DoEnter; override;
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procedure DoExit; override;
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function DraggingToValue(ADistance: Integer): Boolean;
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function DraggedToON: Boolean;
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procedure DrawButton(ARect: TRect); virtual;
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procedure DrawCaption(ARect: TRect; AChecked: Boolean); virtual;
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procedure DrawFocusRect(ARect: TRect);
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@ -94,6 +105,8 @@ type
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function MouseOnButton(X, Y: Integer): Boolean; virtual;
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procedure MouseUp(Button: TMouseButton; Shift:TShiftState; X,Y:Integer); override;
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procedure Paint; override;
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property Animated: Boolean read FAnimated write SetAnimated default false;
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property AnimationEffects: TSwitchAnimationEffects read FAnimationEffects write FAnimationEffects default [];
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property BorderColor: TColor index 2 read GetColors write SetColors default clGray;
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property BorderStyle: TSwitchBorderStyle read FBorderStyle write SetBorderStyle default bsThin;
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property ButtonSize: Integer read FButtonSize write SetButtonSize default DEFAULT_BUTTON_SIZE;
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@ -116,11 +129,14 @@ type
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public
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constructor Create(AOwner: TComponent); override;
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destructor Destroy; override;
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procedure SetBounds(ALeft, ATop, AWidth, AHeight: Integer); override;
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property Orientation: TSwitchOrientation read GetOrientation;
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end;
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TOnOffSwitch = class(TCustomOnOffSwitch)
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published
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property Animated;
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property AnimationEffects;
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property BorderColor;
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property BorderStyle;
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property ButtonSize;
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@ -179,6 +195,19 @@ implementation
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uses
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Math;
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function BlendColors(AFactor: Double; AColor1, AColor2: TColor): TColor;
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var
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f1, f2: Double;
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r, g, b: Byte;
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begin
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f1 := AFactor;
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f2 := 1.0 - f1;
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r := EnsureRange(round(GetRValue(AColor1) * f1 + GetRValue(AColor2) * f2), 0, 255);
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g := EnsureRange(round(GetGValue(AColor1) * f1 + GetGValue(AColor2) * f2), 0, 255);
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b := EnsureRange(round(GetBValue(AColor1) * f1 + GetBValue(AColor2) * f2), 0, 255);
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Result := RGBToColor(r, g, b);
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end;
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function TintedColor(AColor: TColor; ADelta: Integer): TColor;
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var
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r, g, b: Byte;
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@ -235,14 +264,16 @@ begin
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inherited;
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end;
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function TCustomOnOffSwitch.CalcButtonRect(ADelta: Integer): TRect;
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function TCustomOnOffSwitch.CalcButtonRect: TRect;
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(*
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function GetOffset(AMaxSize, ABtnSize: Integer): Integer;
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var
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pStart, pEnd, margin: Integer;
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begin
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margin := CalcMargin;
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if (FInverse xor FChecked) then begin
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if FInverse xor FChecked then
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begin
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// Button at right (or bottom), ADelta is negative
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pStart := AMaxSize - ABtnSize - margin;
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pEnd := margin;
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@ -264,12 +295,12 @@ function TCustomOnOffSwitch.CalcButtonRect(ADelta: Integer): TRect;
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Result := pStart + ADelta;
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end;
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end;
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*)
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begin
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Result := FButtonRect;
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case Orientation of
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soHorizontal : OffsetRect(Result, GetOffset(Width, FButtonSize), 0);
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soVertical : OffsetRect(Result, 0, GetOffset(Height, FButtonSize));
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soHorizontal : OffsetRect(Result, FButtonPos + CalcMargin, 0);
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soVertical : OffsetRect(Result, 0, FButtonPos + CalcMargin);
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end;
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end;
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@ -286,11 +317,11 @@ end;
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procedure TCustomOnOffSwitch.DblClick;
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begin
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inherited;
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if CanChange and FTogglePending then begin
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Checked := not Checked;
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FTogglePending := false;
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end;
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FDblClickTimer.Enabled := false;
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if CanChange and FTogglePending then begin
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FTogglePending := false;
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SetChecked(not FChecked);
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end;
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end;
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procedure TCustomOnOffSwitch.DblClickTimerHandler(Sender: TObject);
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@ -312,6 +343,58 @@ begin
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end;
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end;
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{ Handler for the animation timer }
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procedure TCustomOnOffSwitch.DoAnimation(Sender: TObject);
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const
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SPEED = 3;
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begin
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if FCheckedAfterAnimation xor FInverse then
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begin
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inc(FButtonPos, SPEED);
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if FButtonPos >= FMaxDistance then
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begin
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FAnimationTimer.Enabled := false;
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FChecked := FCheckedAfterAnimation;
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UpdateButtonPos;
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DoChange;
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end;
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end else
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begin
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dec(FButtonPos, SPEED);
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if FButtonPos <= 0 then
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begin
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FAnimationTimer.Enabled := false;
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FChecked := FCheckedAfterAnimation;
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UpdateButtonPos;
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DoChange;
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end;
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end;
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{
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if FCheckedAfterAnimation xor FInverse then
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begin
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inc(FMovedDistance, 3);
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if FMovedDistance > FMaxDistance then
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begin
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FMovedDistance := FMaxDistance;
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FAnimationTimer.Enabled := false;
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FChecked := FCheckedAfterAnimation;
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DoChange;
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end;
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end else
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begin
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dec(FMovedDistance, 3);
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if FMovedDistance < -FMaxDistance then
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begin
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FMovedDistance := -FMaxDistance;
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FAnimationTimer.Enabled := false;
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FChecked := FCheckedAfterAnimation;
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DoChange;
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end;
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end;
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}
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Invalidate;
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end;
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procedure TCustomOnOffSwitch.DoChange;
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begin
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if Assigned(FOnChange) then FOnChange(self);
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@ -329,25 +412,12 @@ begin
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Invalidate;
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end;
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{ Determines whether the dragged distance lands in the part of the ON or OFF state }
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function TCustomOnOffSwitch.DraggingToValue(ADistance: Integer): Boolean;
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var
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margin: Integer;
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{ Determines whether the dragged distance lands in the part of the
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ON (Result = true) or OFF state (Result = false) }
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function TCustomOnOffSwitch.DraggedToON: Boolean;
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begin
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if not (FChecked xor FInverse) and (ADistance < 0) then
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Result := false
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else
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if (FChecked xor FInverse) and (ADistance > 0) then
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Result := true
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else begin
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margin := CalcMargin;
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case Orientation of
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soHorizontal : Result := abs(ADistance) > (Width - FButtonSize) div 2 - margin;
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soVertical : Result := abs(ADistance) > (Height - FButtonSize) div 2 - margin;
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end;
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if FChecked {xor FInverse} then
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Result := not Result;
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end;
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Result := FButtonPos > FMaxDistance div 2;
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if FInverse then Result := not Result;
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end;
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procedure TCustomOnOffSwitch.DrawButton(ARect: TRect);
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@ -359,6 +429,9 @@ begin
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if FFlippedColors then
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Canvas.Brush.Color := Color
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else
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if (saeBlendColors in FAnimationEffects) then
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Canvas.Brush.Color := BlendColors(FButtonPos/FMaxDistance, ColorON, ColorOFF)
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else
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if FChecked then
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Canvas.Brush.Color := ColorON
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else
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@ -471,26 +544,31 @@ begin
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Checked := not Checked;
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end;
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procedure TCustomOnOffSwitch.MouseDown(Button: TMouseButton; Shift:TShiftState; X,Y:Integer);
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procedure TCustomOnOffSwitch.MouseDown(Button: TMouseButton; Shift: TShiftState;
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X, Y: Integer);
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begin
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inherited;
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SetFocus;
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if CanChange and (Button = mbLeft) and MouseOnButton(X, Y) then begin
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if CanChange and (Button = mbLeft) and MouseOnButton(X, Y) then
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begin
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if (FSwitchMode in [smSlide, smSlideDblClick]) then FDragging := true;
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FMousePt := Point(X, Y);
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FDraggedDistance := 0;
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FDblClickTimer.Enabled := true;
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FDblClickTimer.Enabled := FSwitchMode in [smDblClick, smSlideDblClick];
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end;
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end;
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procedure TCustomOnOffSwitch.MouseMove(Shift: TShiftState; X,Y: Integer);
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var
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delta: Integer;
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begin
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inherited;
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if FDragging then begin
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case Orientation of
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soHorizontal : FDraggedDistance := X - FMousePt.X;
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soVertical : FDraggedDistance := Y - FMousePt.Y;
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soHorizontal : delta := X - FMousePt.X;
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soVertical : delta := Y - FMousePt.Y;
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end;
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FMousePt := Point(X, Y);
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FButtonPos := EnsureRange(FButtonPos + delta, 0, FMaxDistance);
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Invalidate;
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end;
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end;
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@ -499,27 +577,25 @@ function TCustomOnOffSwitch.MouseOnButton(X, Y: Integer): Boolean;
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var
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R: TRect;
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begin
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R := CalcButtonRect(FDraggedDistance);
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R := CalcButtonRect;
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Result := PtInRect(R, Point(X, Y));
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end;
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procedure TCustomOnOffSwitch.MouseUp(Button: TMouseButton; Shift:TShiftState; X,Y:Integer);
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var
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oldChecked: Boolean;
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d: Integer;
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begin
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inherited;
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if (Button = mbLeft) and CanChange then begin
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oldChecked := FChecked;
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d := FDraggedDistance;
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FDraggedDistance := 0;
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if FDragging then begin
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FChecked := DraggingToValue(d);
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FDragging := false;
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FChecked := DraggedToON;
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UpdateButtonPos;
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end else
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begin
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if (FSwitchMode = smClick) or (HasPicture and (FSwitchMode = smSlide)) then
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FChecked := not FChecked;
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SetChecked(not FChecked);
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if FChecked <> oldChecked then
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DoChange
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else
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@ -550,6 +626,9 @@ begin
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if Enabled then begin
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if FFlippedColors then begin
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if (saeBlendColors in FAnimationEffects) then
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Canvas.Brush.Color := BlendColors(FButtonPos/FMaxDistance, ColorON, ColorOFF)
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else
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if FChecked then
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Canvas.Brush.Color := ColorON
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else
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@ -621,7 +700,10 @@ begin
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end;
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if FShowCaption then begin
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newChecked := DraggingToValue(FDraggedDistance);
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if FDragging then
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newChecked := DraggedToOn //DraggingToON(FMovedDistance)
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else
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newchecked := FChecked;
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case Orientation of
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soHorizontal:
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if FChecked xor FInverse then begin
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@ -654,7 +736,7 @@ begin
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end;
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end;
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R := CalcButtonRect(FDraggedDistance);
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R := CalcButtonRect;
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DrawButton(R);
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if Focused and FShowFocusRect then begin
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InflateRect(R, 2, 2);
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@ -662,6 +744,23 @@ begin
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end;
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end;
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procedure TCustomOnOffSwitch.SetAnimated(AValue: Boolean);
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begin
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if AValue = FAnimated then exit;
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FAnimated := AValue;
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if FAnimated then
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begin
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if (FAnimationTimer = nil) then
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begin
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FAnimationTimer := TTimer.Create(self);
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FAnimationTimer.Interval := 10;
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FAnimationTimer.Enabled := false;
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FAnimationTimer.OnTimer := @DoAnimation;
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end
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end else
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FreeAndNil(FAnimationTimer);
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end;
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procedure TCustomOnOffSwitch.SetBorderStyle(AValue: TSwitchBorderStyle);
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begin
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if AValue = FBorderStyle then exit;
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@ -669,11 +768,18 @@ begin
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Invalidate;
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end;
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procedure TCustomOnOffSwitch.SetBounds(ALeft, ATop, AWidth, AHeight: Integer);
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begin
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inherited;
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UpdateMaxDistance;
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end;
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procedure TCustomOnOffSwitch.SetButtonSize(AValue: Integer);
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begin
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if (AValue = FButtonSize) and (AValue > 0) then
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exit;
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FButtonSize := AValue;
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UpdateMaxDistance;
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Invalidate;
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end;
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@ -687,9 +793,22 @@ end;
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procedure TCustomOnOffSwitch.SetChecked(AValue: Boolean);
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begin
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if AValue = FChecked then exit;
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FChecked := AValue;
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DoChange;
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Invalidate;
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if FDblClickTimer.Enabled then exit;
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if FAnimated then
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begin
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case Orientation of
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soHorizontal: FMaxDistance := Width - FButtonSize - 2*CalcMargin;
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soVertical: FMaxDistance := Height - FButtonSize - 2*CalcMargin;
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end;
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FAnimationTimer.Enabled := true;
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FCheckedAfterAnimation := AValue;
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end else
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begin
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FChecked := AValue;
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UpdateButtonPos;
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DoChange;
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Invalidate;
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end;
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end;
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procedure TCustomOnOffSwitch.SetColors(AIndex: Integer; AValue: TColor);
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@ -710,6 +829,7 @@ procedure TCustomOnOffSwitch.SetInverse(AValue: boolean);
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begin
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if AValue = FInverse then exit;
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FInverse := AValue;
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UpdateButtonPos;
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Invalidate;
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end;
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@ -748,6 +868,23 @@ begin
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Invalidate;
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end;
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procedure TCustomOnOffSwitch.UpdateButtonPos;
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begin
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if FChecked xor FInverse then
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FButtonPos := FMaxDistance
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else
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FButtonPos := 0;
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end;
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procedure TCustomOnOffSwitch.UpdateMaxDistance;
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begin
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case Orientation of
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soHorizontal: FMaxDistance := Width - FButtonSize - 2*CalcMargin;
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soVertical: FMaxDistance := Height - FButtonSize - 2*CalcMargin;
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end;
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UpdateButtonPos;
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end;
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procedure TCustomOnOffSwitch.WM_EraseBkGnd(var Msg: TMsg);
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begin
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Msg.message := 1;
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Reference in New Issue
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