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https://gitlab.com/freepascal.org/lazarus/lazarus.git
synced 2025-08-18 03:39:21 +02:00
MG: added TCanvas.Ellipse, TCanvas.Pie
git-svn-id: trunk@557 -
This commit is contained in:
lazarus
parent
e15e87f526
commit
5a1f41e5ad
@ -442,9 +442,12 @@ type
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Procedure CopyRect(const Dest : TRect; Canvas : TCanvas; const Source : TRect);
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destructor Destroy; override;
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Procedure Draw(X,Y: Integer; Graphic : TGraphic);
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procedure Ellipse(x1, y1, x2, y2: Integer);
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procedure Ellipse(const Rect: TRect);
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procedure Pie(x,y,width,height,angle1,angle2 : Integer);
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Procedure FillRect(const Rect : TRect);
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Procedure Rectangle(X1,Y1,X2,Y2 : Integer); overload;
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Procedure Rectangle(const Rect: TRect); overload;
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Procedure Rectangle(X1,Y1,X2,Y2 : Integer);
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Procedure Rectangle(const Rect: TRect);
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Procedure Line(X1,Y1,X2,Y2 : Integer);
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Procedure MoveTo(X1,Y1 : Integer);
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Procedure LineTo(X1,Y1 : Integer);
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@ -732,6 +735,9 @@ end.
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{ =============================================================================
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$Log$
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Revision 1.19 2001/12/28 11:41:50 lazarus
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MG: added TCanvas.Ellipse, TCanvas.Pie
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Revision 1.18 2001/12/21 18:16:59 lazarus
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Added TImage class
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Shane
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@ -217,13 +217,64 @@ end;
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Params: x,y,width,height,angle1,angle2
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Returns: Nothing
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Use Arc to draw an elliptically curved line with the current Pen.
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The angles angle1 and angle2 are 1/16th of a degree. For example, a full
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circle equals 5760 (16*360). Positive values of Angle and AngleLength mean
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counter-clockwise while negative values mean clockwise direction.
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Zero degrees is at the 3'o clock position.
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------------------------------------------------------------------------------}
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procedure TCanvas.Arc(x,y,width,height,angle1,angle2 : Integer);
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begin
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RequiredState([csHandleValid, csBrushValid, csPenValid]);
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RequiredState([csHandleValid, csPenValid]);
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LCLLinux.Arc(FHandle,x,y,width,height,angle1,angle2);
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end;
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{------------------------------------------------------------------------------
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Method: TCanvas.Pie
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Params: x,y,width,height,angle1,angle2
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Returns: Nothing
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Use Pie to draw a filled pie-shaped wedge on the canvas.
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The angles angle1 and angle2 are 1/16th of a degree. For example, a full
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circle equals 5760 (16*360). Positive values of Angle and AngleLength mean
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counter-clockwise while negative values mean clockwise direction.
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Zero degrees is at the 3'o clock position.
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------------------------------------------------------------------------------}
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procedure TCanvas.Pie(x,y,width,height,angle1,angle2 : Integer);
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begin
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RequiredState([csHandleValid, csBrushValid, csPenValid]);
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LCLLinux.Pie(FHandle,x,y,width,height,angle1,angle2);
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end;
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{------------------------------------------------------------------------------
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Method: TCanvas.Ellipse
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Params: X1, Y1, X2, Y2
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Returns: Nothing
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Use Ellipse to draw a filled circle or ellipse on the canvas.
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------------------------------------------------------------------------------}
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procedure TCanvas.Ellipse(x1, y1, x2, y2: Integer);
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begin
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RequiredState([csHandleValid, csBrushValid, csPenValid]);
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LCLLinux.Ellipse(FHandle,x1,y1,x2,y2);
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end;
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{------------------------------------------------------------------------------
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Method: TCanvas.Ellipse
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Params: X1, Y1, X2, Y2
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Returns: Nothing
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Use Ellipse to draw a filled circle or ellipse on the canvas.
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------------------------------------------------------------------------------}
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procedure TCanvas.Ellipse(const Rect: TRect);
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begin
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Ellipse(Rect.Left,Rect.Top,Rect.Right,Rect.Bottom);
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end;
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{------------------------------------------------------------------------------
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Method: TCanvas.FillRect
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Params: Rect
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@ -623,6 +674,9 @@ end;
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{ =============================================================================
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$Log$
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Revision 1.13 2001/12/28 11:41:51 lazarus
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MG: added TCanvas.Ellipse, TCanvas.Pie
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Revision 1.12 2001/12/27 16:31:28 lazarus
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MG: implemented TCanvas.Arc
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@ -161,7 +161,12 @@ end;
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function TInterfaceBase.EnableWindow(hWnd: HWND; bEnable: Boolean): Boolean;
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begin
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Result := False;
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Result := False;
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end;
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function TInterfaceBase.Ellipse(DC: HDC; x1, y1, x2, y2: Integer): Boolean;
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begin
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Result:=false;
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end;
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function TInterfaceBase.ExtTextOut(DC: HDC; X, Y: Integer; Options: Longint; Rect: PRect; Str: PChar; Count: Longint; Dx: PInteger): Boolean;
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@ -317,16 +322,22 @@ begin
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Result := False;
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end;
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function TInterfaceBase.PostMessage(hWnd: HWND; Msg: Cardinal; wParam: LongInt; lParam: LongInt): Boolean;
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begin
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Result := False;
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end;
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function TInterfaceBase.PeekMessage(var lpMsg : TMsg; Handle : HWND; wMsgFilterMin, wMsgFilterMax,wRemoveMsg : UINT): Boolean;
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Begin
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Result := False;
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End;
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function TInterfaceBase.Pie(DC: HDC;
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x,y,width,height,angle1,angle2 : Integer): Boolean;
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begin
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Result := false;
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end;
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function TInterfaceBase.PostMessage(hWnd: HWND; Msg: Cardinal; wParam: LongInt; lParam: LongInt): Boolean;
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begin
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Result := False;
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end;
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function TInterfaceBase.RealizePalette(DC: HDC): Cardinal;
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begin
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Result := 0;
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@ -503,6 +514,9 @@ end;
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{ =============================================================================
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$Log$
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Revision 1.23 2001/12/28 11:41:51 lazarus
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MG: added TCanvas.Ellipse, TCanvas.Pie
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Revision 1.22 2001/12/27 16:31:28 lazarus
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MG: implemented TCanvas.Arc
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@ -21,7 +21,6 @@ begin
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Result := InterfaceObject.Arc(DC,x,y,width,height,angle1,angle2);
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end;
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function BitBlt(DestDC: HDC; X, Y, Width, Height: Integer; SrcDC: HDC; XSrc, YSrc: Integer; Rop: DWORD): Boolean;
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begin
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Result := InterfaceObject.BitBlt(DestDC, X, Y, Width, Height, SrcDC, XSrc, YSrc, Rop);
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@ -166,6 +165,11 @@ begin
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Result := InterfaceObject.EnableWindow(hWnd, bEnable);
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end;
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function Ellipse(DC: HDC; x1,y1,x2,y2: Integer): Boolean;
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begin
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Result := InterfaceObject.Ellipse(DC,x1,y1,x2,y2);
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end;
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function ExtTextOut(DC: HDC; X, Y: Integer; Options: Longint; Rect: PRect; Str: PChar; Count: Longint; Dx: PInteger): Boolean;
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begin
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Result := InterfaceObject.ExtTextOut(DC, X, Y, Options, Rect, Str, Count, Dx);
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@ -321,6 +325,11 @@ begin
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Result := InterfaceObject.PeekMessage(lpMsg,Handle,wMsgFilterMin,wMsgFilterMax,wRemoveMsg);
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end;
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function Pie(DC: HDC; x,y,width,height,angle1,angle2 : Integer): Boolean;
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begin
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Result := InterfaceObject.Pie(DC,x,y,width,height,angle1,angle2);
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end;
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function PostMessage(hWnd: HWND; Msg: Cardinal; wParam: LongInt; lParam: LongInt): Boolean;
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begin
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Result := InterfaceObject.PostMessage(hWnd, Msg, wParam, lParam);
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@ -1033,6 +1042,9 @@ end;
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{ =============================================================================
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$Log$
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Revision 1.22 2001/12/28 11:41:51 lazarus
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MG: added TCanvas.Ellipse, TCanvas.Pie
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Revision 1.21 2001/12/27 16:31:28 lazarus
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MG: implemented TCanvas.Arc
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@ -61,6 +61,7 @@ function DrawEdge(DC: HDC; var Rect: TRect; edge: Cardinal; grfFlags: Cardinal):
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function EnableMenuItem(hMenu: HMENU; uIDEnableItem: Integer; bEnable: Boolean): Boolean; {$IFDEF IF_BASE_MEMBER}virtual;{$ENDIF}
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function EnableScrollBar(Wnd: HWND; wSBflags, wArrows: Cardinal): Boolean; {$IFDEF IF_BASE_MEMBER}virtual;{$ENDIF}
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function EnableWindow(hWnd: HWND; bEnable: Boolean): Boolean; {$IFDEF IF_BASE_MEMBER}virtual;{$ENDIF}
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function Ellipse(DC: HDC; x1, y1, x2, y2: Integer): Boolean; {$IFDEF IF_BASE_MEMBER}virtual;{$ENDIF}
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//function EqualRect --> independent
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function ExtTextOut(DC: HDC; X, Y: Integer; Options: Longint; Rect: PRect; Str: PChar; Count: Longint; Dx: PInteger): Boolean; {$IFDEF IF_BASE_MEMBER}virtual;{$ENDIF}
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@ -109,6 +110,7 @@ function MoveToEx(DC: HDC; X, Y: Integer; OldPoint: PPoint): Boolean; {$IFDEF IF
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//function OffsetRect --> independent
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function PeekMessage(var lpMsg : TMsg; Handle : HWND; wMsgFilterMin, wMsgFilterMax,wRemoveMsg : UINT): Boolean; {$IFDEF IF_BASE_MEMBER}virtual;{$ENDIF}
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function Pie(DC: HDC; x,y,width,height,angle1,angle2 : Integer): Boolean; {$IFDEF IF_BASE_MEMBER}virtual;{$ENDIF}
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function PostMessage(hWnd: HWND; Msg: Cardinal; wParam: LongInt; lParam: LongInt): Boolean; {$IFDEF IF_BASE_MEMBER}virtual;{$ENDIF}
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//function PtInRect --> independent
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@ -243,6 +245,9 @@ function UnionRect(var lprcDst: TRect; const lprcSrc1, lprcSrc2: TRect): Boolean
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{ =============================================================================
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$Log$
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Revision 1.18 2001/12/28 11:41:51 lazarus
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MG: added TCanvas.Ellipse, TCanvas.Pie
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Revision 1.17 2001/12/27 16:31:28 lazarus
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MG: implemented TCanvas.Arc
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@ -32,12 +32,16 @@ const
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//##apiwiz##sps## // Do not remove
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{------------------------------------------------------------------------------
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Function: Arc
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Params: none
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Method: Arc
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Params: x,y,width,height,angle1,angle2
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Returns: Nothing
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The Arc function draws an arc. The arc is outlined by using
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the current pen.
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Use Arc to draw an elliptically curved line with the current Pen.
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The angles angle1 and angle2 are 1/16th of a degree. For example, a full
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circle equals 5760 (16*360). Positive values of Angle and AngleLength mean
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counter-clockwise while negative values mean clockwise direction.
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Zero degrees is at the 3'o clock position.
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------------------------------------------------------------------------------}
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function TgtkObject.Arc(DC: HDC;
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x,y,width,height,angle1,angle2 : Integer): Boolean;
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@ -48,7 +52,7 @@ begin
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begin
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if GC = nil
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then begin
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WriteLn('WARNING: [TgtkObject.Rectangle] Uninitialized GC');
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WriteLn('WARNING: [TgtkObject.Arc] Uninitialized GC');
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Result := False;
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end
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else begin
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@ -62,7 +66,6 @@ begin
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end;
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{------------------------------------------------------------------------------
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Function: BitBlt
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Params: DestDC: The destination devicecontext
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@ -1623,6 +1626,47 @@ begin
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Result:=false;
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end;
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{------------------------------------------------------------------------------
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Method: Ellipse
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Params: X1, Y1, X2, Y2
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Returns: Nothing
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Use Ellipse to draw a filled circle or ellipse.
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------------------------------------------------------------------------------}
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function TgtkObject.Ellipse(DC: HDC;
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x1,y1,x2,y2: Integer): Boolean;
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var x,y,width,height: integer;
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begin
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Result := IsValidDC(DC);
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if Result
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then with PDeviceContext(DC)^ do
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begin
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if GC = nil
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then begin
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WriteLn('WARNING: [TgtkObject.Ellipse] Uninitialized GC');
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Result := False;
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end
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else begin
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x:=(x1+x2) shr 1;
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y:=(y1+y2) shr 1;
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width:=(x2-x1);
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if width<0 then width:=-width;
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width:=width shr 1;
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height:=(y2-y1);
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if height<0 then height:=-height;
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height:=height shr 1;
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// first draw interior in brush color
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SelectGDKBrushProps(DC);
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gdk_draw_arc(Drawable, GC, 1, x, y, Width, Height, 0, 360 shl 6);
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// Draw outline
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SelectGDKPenProps(DC);
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gdk_draw_arc(Drawable, GC, 0, x, y, Width, Height, 0, 360 shl 6);
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Result := True;
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end;
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end;
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end;
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{------------------------------------------------------------------------------
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Function: ExtTextOut
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Params: none
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@ -2981,6 +3025,44 @@ begin
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end;
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end;
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{------------------------------------------------------------------------------
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Method: Pie
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Params: x,y,width,height,angle1,angle2
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Returns: Nothing
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Use Pie to draw a filled pie-shaped wedge on the canvas.
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The angles angle1 and angle2 are 1/16th of a degree. For example, a full
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circle equals 5760 (16*360). Positive values of Angle and AngleLength mean
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counter-clockwise while negative values mean clockwise direction.
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Zero degrees is at the 3'o clock position.
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------------------------------------------------------------------------------}
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function TgtkObject.Pie(DC: HDC;
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x,y,width,height,angle1,angle2 : Integer): Boolean;
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begin
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Result := IsValidDC(DC);
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if Result
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then with PDeviceContext(DC)^ do
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begin
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if GC = nil
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then begin
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WriteLn('WARNING: [TgtkObject.Pie] Uninitialized GC');
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Result := False;
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end
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else begin
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// first draw interior in brush color
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SelectGDKBrushProps(DC);
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gdk_draw_arc(Drawable, GC, 1, X, Y, Width, Height,
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Angle1 shl 2, Angle2 shl 2);
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// Draw outline
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SelectGDKPenProps(DC);
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gdk_draw_arc(Drawable, GC, 0, X, Y, Width, Height,
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Angle1 shl 2, Angle2 shl 2);
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Result := True;
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end;
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end;
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end;
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{------------------------------------------------------------------------------
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Function: PostMessage
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Params: hWnd:
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@ -4128,6 +4210,9 @@ end;
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{ =============================================================================
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$Log$
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Revision 1.54 2001/12/28 11:41:51 lazarus
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MG: added TCanvas.Ellipse, TCanvas.Pie
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Revision 1.53 2001/12/27 16:31:28 lazarus
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MG: implemented TCanvas.Arc
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@ -45,6 +45,7 @@ function DrawEdge(DC: HDC; var Rect: TRect; edge: Cardinal; grfFlags: Cardinal):
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function EnableMenuItem(hMenu: HMENU; uIDEnableItem: Integer; bEnable: Boolean): Boolean; override;
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function EnableScrollBar(Wnd: HWND; wSBflags, wArrows: Cardinal): Boolean; override;
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function EnableWindow(hWnd: HWND; bEnable: Boolean): Boolean; override;
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function Ellipse(DC: HDC; x1,y1,x2,y2: Integer): Boolean; override;
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function ExtTextOut(DC: HDC; X, Y: Integer; Options: Longint; Rect: PRect; Str: PChar; Count: Longint; Dx: PInteger): Boolean; override;
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function FillRect(DC: HDC; const Rect: TRect; Brush: HBRUSH): Boolean; override;
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@ -83,6 +84,7 @@ function MessageBox(hWnd: HWND; lpText, lpCaption: PChar; uType: Cardinal): inte
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function MoveToEx(DC: HDC; X, Y: Integer; OldPoint: PPoint): Boolean; override;
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function PeekMessage(var lpMsg : TMsg; Handle : HWND; wMsgFilterMin, wMsgFilterMax,wRemoveMsg : UINT): Boolean;
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function Pie(DC: HDC; x,y,width,height,angle1,angle2 : Integer): Boolean; override;
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function PostMessage(hWnd: HWND; Msg: Cardinal; wParam: LongInt; lParam: LongInt): Boolean; override;
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function RealizePalette(DC: HDC): Cardinal; override;
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@ -128,6 +130,9 @@ Function WindowFromPoint(Point : TPoint) : HWND; override;
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{ =============================================================================
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$Log$
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Revision 1.22 2001/12/28 11:41:51 lazarus
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MG: added TCanvas.Ellipse, TCanvas.Pie
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Revision 1.21 2001/12/27 16:31:28 lazarus
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MG: implemented TCanvas.Arc
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