david
78ab77cd4c
git-svn-id: https://192.168.0.254/svn/Componentes.Terceros.jvcl@19 7f62d464-2af8-f54e-996c-e91b33f51cbe
140 lines
3.7 KiB
ObjectPascal
140 lines
3.7 KiB
ObjectPascal
{-----------------------------------------------------------------------------
|
|
The contents of this file are subject to the Mozilla Public License
|
|
Version 1.1 (the "License"); you may not use this file except in compliance
|
|
with the License. You may obtain a copy of the License at
|
|
http://www.mozilla.org/MPL/MPL-1.1.html
|
|
|
|
Software distributed under the License is distributed on an "AS IS" basis,
|
|
WITHOUT WARRANTY OF ANY KIND, either expressed or implied. See the License for
|
|
the specific language governing rights and limitations under the License.
|
|
|
|
The Original Code is: JvgGraph.PAS, released on 2003-01-15.
|
|
|
|
The Initial Developer of the Original Code is Andrey V. Chudin, [chudin att yandex dott ru]
|
|
Portions created by Andrey V. Chudin are Copyright (C) 2003 Andrey V. Chudin.
|
|
All Rights Reserved.
|
|
|
|
Contributor(s):
|
|
Michael Beck [mbeck att bigfoot dott com].
|
|
|
|
You may retrieve the latest version of this file at the Project JEDI's JVCL home page,
|
|
located at http://jvcl.delphi-jedi.org
|
|
|
|
Known Issues:
|
|
-----------------------------------------------------------------------------}
|
|
// $Id: JvgGraph.pas 12461 2009-08-14 17:21:33Z obones $
|
|
|
|
unit JvgGraph;
|
|
|
|
{$I jvcl.inc}
|
|
|
|
interface
|
|
|
|
uses
|
|
{$IFDEF UNITVERSIONING}
|
|
JclUnitVersioning,
|
|
{$ENDIF UNITVERSIONING}
|
|
Windows, Messages, Classes, Controls, Graphics, ExtCtrls,
|
|
JvComponent,
|
|
JvgTypes, JvgCommClasses, JvgUtils;
|
|
|
|
const
|
|
MaxPointsCount = 30;
|
|
|
|
type
|
|
TJvgGraph = class(TJvGraphicControl)
|
|
protected
|
|
procedure Paint; override;
|
|
public
|
|
PenWidth: Integer;
|
|
MaxValue: Integer;
|
|
PointsCount: Integer;
|
|
DrawPointsCount: Integer;
|
|
YPoints: array [0..MaxPointsCount] of Integer;
|
|
constructor Create(AOwner: TComponent); override;
|
|
published
|
|
property Color;
|
|
property Height default 50;
|
|
property Width default 50;
|
|
end;
|
|
|
|
{$IFDEF UNITVERSIONING}
|
|
const
|
|
UnitVersioning: TUnitVersionInfo = (
|
|
RCSfile: '$URL: https://jvcl.svn.sourceforge.net/svnroot/jvcl/tags/JVCL3_39/run/JvgGraph.pas $';
|
|
Revision: '$Revision: 12461 $';
|
|
Date: '$Date: 2009-08-14 19:21:33 +0200 (ven., 14 août 2009) $';
|
|
LogPath: 'JVCL\run'
|
|
);
|
|
{$ENDIF UNITVERSIONING}
|
|
|
|
implementation
|
|
|
|
constructor TJvgGraph.Create(AOwner: TComponent);
|
|
begin
|
|
inherited Create(AOwner);
|
|
Width := 50;
|
|
Height := 50;
|
|
MaxValue := 100;
|
|
PointsCount := MaxPointsCount;
|
|
DrawPointsCount := MaxPointsCount;
|
|
end;
|
|
|
|
procedure TJvgGraph.Paint;
|
|
var
|
|
R: TRect;
|
|
I: Integer;
|
|
Points: array [0..MaxPointsCount] of TPoint;
|
|
ShadowPoints: array [0..MaxPointsCount] of TPoint;
|
|
|
|
procedure OffsetPoints(X, Y: Integer);
|
|
var
|
|
I: Integer;
|
|
begin
|
|
for I := 0 to PointsCount do
|
|
begin
|
|
Inc(Points[I].X, X);
|
|
Inc(Points[I].Y, Y);
|
|
end;
|
|
end;
|
|
|
|
begin
|
|
inherited Paint;
|
|
R := ClientRect;
|
|
InflateRect(R, -2, -2);
|
|
|
|
for I := 0 to PointsCount do
|
|
begin
|
|
Points[I].X := MulDiv(I, Width, PointsCount);
|
|
Points[I].Y := Height - MulDiv(YPoints[I], Height, MaxValue);
|
|
ShadowPoints[I].X := Points[I].X + 6;
|
|
ShadowPoints[I].Y := Points[I].Y + 6;
|
|
end;
|
|
|
|
Canvas.Pen.Width := PenWidth;
|
|
// Canvas.Pen.Color := clBtnShadow;
|
|
// Canvas.Polyline( ShadowPoints );
|
|
|
|
//..3D shadow
|
|
Canvas.Pen.Color := DecColor(Color, 100);
|
|
Canvas.Polyline(Slice(Points, DrawPointsCount + 1));
|
|
|
|
OffsetPoints(-2, -2);
|
|
Canvas.Pen.Color := IncColor(Color, 200);
|
|
Canvas.Polyline(Slice(Points, DrawPointsCount + 1));
|
|
|
|
OffsetPoints(1, 1);
|
|
Canvas.Pen.Color := Color;
|
|
Canvas.Polyline(Slice(Points, DrawPointsCount + 1));
|
|
end;
|
|
|
|
{$IFDEF UNITVERSIONING}
|
|
initialization
|
|
RegisterUnitVersion(HInstance, UnitVersioning);
|
|
|
|
finalization
|
|
UnregisterUnitVersion(HInstance);
|
|
{$ENDIF UNITVERSIONING}
|
|
|
|
end.
|