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industrial: Fix LCL scaling for TmKnob. New properties MarkSizeKind, Shadow, ShadowColor and BorderColor.
git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@7301 8e941d3f-bd1b-0410-a28a-d453659cc2b4
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wp_xxyyzz
@ -51,10 +51,6 @@ uses
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LclIntf, Types, SysUtils, Classes, Graphics, Math,
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Controls, Forms, Dialogs, ComCtrls;
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const
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DEFAULT_KNOB_FACE_COLOR = clSilver;
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DEFAULT_KNOB_MARK_SIZE = 6;
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type
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TKnobAngleRange = (
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arTop270, arTop180, arTop120, arTop90,
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@ -64,38 +60,51 @@ type
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);
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TKnobChangeEvent = procedure(Sender: TObject; AValue: Longint) of object;
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TKnobMarkStyle = (msLine, msCircle, msTriangle);
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TKnobMarkSizeKind = (mskPercentage, mskPixels);
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TmKnob = class(TCustomControl)
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private
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{ Private declarations }
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const
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DEFAULT_KNOB_MARK_SIZE = 20;
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private
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FMaxValue: Integer;
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FMinValue: Integer;
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FCurValue: Integer;
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FFaceColor: TColor;
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FTickColor: TColor;
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FBorderColor: TColor;
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FAllowDrag: Boolean;
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FOnChange: TKnobChangeEvent;
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FFollowMouse: Boolean;
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FMarkSize: Integer;
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FMarkSizeKind: TKnobMarkSizeKind;
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FMarkStyle: TKnobMarkStyle;
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FAngleRange: TKnobAngleRange;
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FRotationEffect: Boolean;
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FShadow: Boolean;
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FShadowColor: TColor;
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FTransparent: Boolean;
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function GetAngleOrigin: Double;
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function GetAngleRange: Double;
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procedure SetAllowDrag(AValue: Boolean);
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procedure SetAngleRange(AValue: TKnobAngleRange);
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procedure SetBorderColor(AValue: TColor);
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procedure SetCurValue(AValue: Integer);
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procedure SetFaceColor(AColor: TColor);
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procedure SetMarkSize(AValue: Integer);
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procedure SetMarkSizeKind(AValue: TKnobMarkSizeKind);
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procedure SetMarkStyle(AValue: TKnobMarkStyle);
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procedure SetMaxValue(AValue: Integer);
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procedure SetMinValue(AValue: Integer);
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procedure SetShadow(AValue: Boolean);
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procedure SetShadowColor(AValue: TColor);
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procedure SetTickColor(AValue: TColor);
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procedure SetTransparent(AValue: Boolean);
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procedure UpdatePosition(X, Y: Integer);
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protected { Protected declarations }
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protected
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procedure DoAutoAdjustLayout(const AMode: TLayoutAdjustmentPolicy;
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const AXProportion, AYProportion: Double); override;
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class function GetControlClassDefaultSize: TSize; override;
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procedure KnobChange;
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procedure MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
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@ -104,35 +113,40 @@ type
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procedure Paint; override;
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public
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{ Public declarations }
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constructor Create(AOwner: TComponent); override;
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published
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{ Published declarations }
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property Align;
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property AllowUserDrag: Boolean read FAllowDrag write SetAllowDrag default True;
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property AngleRange: TKnobAngleRange read FAngleRange write SetAngleRange default arTop270;
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property BorderColor: TColor read FBorderColor write SetBorderColor default clBtnHighlight;
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property BorderSpacing;
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property Color;
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property FaceColor: TColor read FFaceColor write SetFaceColor default DEFAULT_KNOB_FACE_COLOR;
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property FaceColor: TColor read FFaceColor write SetFaceColor default clSilver;
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property TickColor: TColor read FTickColor write SetTickColor default clBlack;
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property Position: Integer read FCurValue write SetCurValue;
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property RotationEffect: Boolean read FRotationEffect write FRotationEffect default false;
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property Enabled;
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property MarkSize: Integer read FMarkSize write SetMarkSize default DEFAULT_KNOB_MARK_SIZE;
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property MarkSizeKind: TKnobMarkSizeKind read FMarkSizeKind write SetMarkSizeKind default mskPercentage;
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property MarkStyle: TKnobMarkStyle read FMarkStyle write SetMarkStyle default msLine;
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property Max: Integer read FMaxValue write SetMaxValue default 100;
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property Min: Integer read FMinValue write SetMinvalue default 0;
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property OnChange: TKnobChangeEvent read FOnChange write FOnChange;
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property ParentColor;
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property ParentShowHint;
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property Shadow: Boolean read FShadow write SetShadow default true;
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property ShadowColor: TColor read FShadowColor write SetShadowColor default clBtnShadow;
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property ShowHint;
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property Transparent: Boolean read FTransparent write SetTransparent default true;
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property Visible;
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end;
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implementation
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{ Rotates point P around the Center by the angle given by its sin and cos.
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The angle is relative to the upward y axis in clockwise direction. }
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function Rotate(P, Center: TPoint; SinAngle, CosAngle: Double): TPoint;
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begin
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P.X := P.X - Center.X;
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@ -141,7 +155,10 @@ begin
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Result.Y := round(sinAngle * P.X + cosAngle * P.Y) + Center.Y;
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end;
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constructor TmKnob.Create(AOwner : TComponent);
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{ TmKnob }
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constructor TmKnob.Create(AOwner: TComponent);
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begin
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inherited Create(AOwner);
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with GetControlClassDefaultSize do
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@ -154,11 +171,26 @@ begin
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FMarkStyle := msLine;
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FMarkSize := DEFAULT_KNOB_MARK_SIZE;
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FTickColor := clBlack;
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FFaceColor := DEFAULT_KNOB_FACE_COLOR;
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FFaceColor := clSilver;
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FBorderColor := clBtnHighlight;
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FFollowMouse := false;
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FAllowDrag := true;
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FAngleRange := arTop270;
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FTransparent := true;
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FShadow := true;
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FShadowColor := clBtnShadow;
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end;
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procedure TmKnob.DoAutoAdjustLayout(
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const AMode: TLayoutAdjustmentPolicy;
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const AXProportion, AYProportion: Double);
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begin
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inherited DoAutoAdjustLayout(AMode, AXProportion, AYProportion);
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if AMode in [lapAutoAdjustWithoutHorizontalScrolling, lapAutoAdjustForDPI] then
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begin
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if FMarkSizeKind = mskPixels then
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FMarkSize := Round(FMarkSize * AXProportion);
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end;
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end;
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function TmKnob.GetAngleOrigin: Double;
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@ -223,102 +255,11 @@ begin
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UpdatePosition(X,Y)
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end;
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(*
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procedure TmKnob.Paint;
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var R : TRect;
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Bm : TBitMap;
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Co,Si,Angle : Double;
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X, Y,W, H : Integer;
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dx,dy,gx,gy : Integer;
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OuterPoint : TPoint;
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begin
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{ Initialize offscreen BitMap }
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Bm := TBitMap.Create;
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if ( csdesigning in componentstate) then
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if Height < Width then
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Height:=Width
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else
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Width:=Height;
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Bm.Width := Width;
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Bm.Height := Height;
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Bm.Canvas.Brush.Color := clBTNFACE; //clWindow;
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R.Left := 0;
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R.Top := 0;
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R.Right := Width ;//- 1;
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R.Bottom := Height;// - 1;
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W := R.Right - R.Left -4;
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H := R.Bottom - R.Top -4;
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{ This weird thing make knob "shake", emulating a rotation effect.
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Not so pretty, but I like it..............}
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if fRotationEffect then
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if (position mod 2) <> 0 then
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inc(h);
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Bm.Canvas.FillRect(R);
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with Bm.Canvas do
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begin
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Brush.Color := FaceColor;
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Pen.Width := 2;
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Pen.Color := Cl3dlight;
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ellipse(1, 1, W-1, H-1);
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Pen.Color := Clbtnshadow;
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ellipse(3, 3, W+2, H+2);
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Pen.Color := Clbtnface;
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Pen.Width := 1;
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RoundRect(2,2,w,h,w,h);
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Pen.Width := 3;
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Pen.Color := TickColor;
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if Position >= 0 then
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begin
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Brush.Color := FaceColor;
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X := W div 2;
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Y := H div 2;
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dX := W div 6;
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dY := H div 6;
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gX := W div 32;
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gY := H div 32;
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Angle:=(Position - (Min + Max)/2 ) / (Max - Min) * 5 ;
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Si:=Sin(Angle);
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Co:=Cos(Angle);
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OuterPoint.X:=Round(X + Si * (X-dx));
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OuterPoint.Y:=Round(Y - Co * (Y-dy));
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MoveTo(OuterPoint.X,OuterPoint.y);
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case MarkStyle of
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msLine : LineTo(Round(X + Si * (X-gx)),Round(Y - Co * (Y-gy)));
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{ this implementation of circle style is very poor but for my needing is enough}
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msCircle : begin
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Brush.Color := TickColor;
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RoundRect(OuterPoint.X-3, OuterPoint.Y-3,
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OuterPoint.X+3, OuterPoint.Y+3,
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OuterPoint.X+3, OuterPoint.Y+3);
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end;
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end;
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end;
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end;
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Canvas.CopyMode := cmSrcCopy;
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Canvas.Draw(0, 0, Bm);
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bm.Destroy;
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end;
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*)
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procedure TmKnob.Paint;
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const
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cPENWIDTH = 1;
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cMARGIN = 4*cPENWIDTH;
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var
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R: TRect;
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bmp: TBitmap;
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Angle, sinAngle, cosAngle: Double;
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//X, Y,
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W, H: Integer;
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i: Integer;
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P: array[0..3] of TPoint;
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@ -328,8 +269,8 @@ var
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ctr: TPoint;
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penwidth: Integer;
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begin
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margin := Scale96ToFont(cMARGIN);
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penwidth := Scale96ToFont(cPENWIDTH);
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margin := 4;
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penwidth := 1;
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{ Initialize offscreen BitMap }
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bmp := TBitmap.Create;
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@ -373,22 +314,32 @@ begin
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Pen.Style := psSolid;
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R := Rect(ctr.X, ctr.Y, ctr.X, ctr.Y);
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InflateRect(R, radius - penwidth, radius - penwidth);
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if FShadow then
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OffsetRect(R, -penwidth, -penwidth);
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Ellipse(R);
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Pen.Color := clBtnShadow;
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if FShadow then
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begin
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Pen.Color := FShadowColor;
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OffsetRect(R, 3*penwidth, 3*penwidth);
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Ellipse(R);
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end;
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Pen.Color := clBtnFace;
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Pen.Color := FBorderColor;
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Pen.Width := 1;
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if FShadow then
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OffsetRect(R, -2*penwidth, -2*penwidth);
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Ellipse(R);
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if Position >= 0 then
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begin
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case FMarkSizeKind of
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mskPercentage:
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markersize := radius * FMarkSize div 100;
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if markersize < 5 then markersize := 5;
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mskPixels:
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markerSize := FMarkSize;
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end;
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if markersize < 2 then markersize := 2;
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Angle := (Position - (Min + Max)/2 ) / (Max - Min) * GetAngleRange + GetAngleOrigin;
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SinCos(Angle, sinAngle, cosAngle);
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@ -398,8 +349,8 @@ begin
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begin
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Pen.Width := 3;
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Pen.Color := TickColor;
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P[0] := Point(ctr.X, markersize);
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P[1] := Point(P[0].X, P[0].Y + markersize);
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P[0] := Point(ctr.X, ctr.Y - radius + penwidth);
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P[1] := Point(ctr.X, ctr.Y - radius + penwidth + markersize);
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for i:=0 to 1 do
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P[i] := Rotate(P[i], ctr, sinAngle, cosAngle);
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MoveTo(P[0].X, P[0].Y);
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@ -409,7 +360,8 @@ begin
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begin
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Brush.Color := TickColor;
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Pen.Style := psClear;
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P[0] := Rotate(Point(ctr.X, MARGIN + markersize + H div 32), ctr, sinAngle, cosAngle);
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P[0] := Point(ctr.X, ctr.Y - radius + markersize + 2*penwidth);
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P[0] := Rotate(P[0], ctr, sinAngle, cosAngle);
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R := Rect(P[0].X, P[0].Y, P[0].X, P[0].Y);
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InflateRect(R, markersize, markersize);
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Ellipse(R);
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@ -418,7 +370,8 @@ begin
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begin
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Brush.Color := TickColor;
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Pen.Style := psClear;
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P[0] := Point(ctr.X, H div 32);
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// P[0] := Point(ctr.X, H div 32);
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P[0] := Point(ctr.X, ctr.Y - radius + 2*penwidth);
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P[1] := Point(P[0].X - markersize, P[0].Y + markersize*2);
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P[2] := Point(P[0].X + markersize, P[0].Y + markersize*2);
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P[3] := P[0];
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@ -455,6 +408,15 @@ begin
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end;
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end;
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procedure TmKnob.SetBorderColor(AValue: TColor);
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begin
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if AValue <> FBorderColor then
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begin
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FBorderColor := AValue;
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Invalidate;
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end;
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end;
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procedure TmKnob.SetCurValue(AValue: Integer);
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var
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tmp: Integer;
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@ -489,6 +451,15 @@ begin
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end;
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end;
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procedure TmKnob.SetMarkSizeKind(AValue: TKnobMarkSizeKind);
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begin
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if AValue <> FMarkSizeKind then
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begin
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FMarkSizeKind := AValue;
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Invalidate;
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end;
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end;
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procedure TmKnob.SetMarkStyle(AValue: TKnobMarkStyle);
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begin
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if AValue <> FMarkStyle then
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@ -516,6 +487,24 @@ begin
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end;
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end;
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procedure TmKnob.SetShadow(AValue: Boolean);
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begin
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if AValue <> FShadow then
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begin
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FShadow := AValue;
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Invalidate;
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end;
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end;
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procedure TmKnob.SetShadowColor(AValue: TColor);
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begin
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if AValue <> FShadowColor then
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begin
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FShadowColor := AValue;
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Invalidate;
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end;
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end;
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procedure TmKnob.SetTickColor(AValue: TColor);
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begin
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if AValue <> FTickColor then
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