//www.dronymc.cjb.net
//drony@mynet.com
//icq:266148308
unit XiProgressBar;
interface
uses
Windows, Classes, Controls, Graphics, Messages, Types, Forms, Dialogs,
Math, SysUtils, ComCtrls;
type
TColorScheme = (csCustom, csDesert, csGrass, csSilver, csSky, csRose, csSun,
csHackers, csNight, csVelvet, csMetal, csViolet, csToxic);
TFillDirection = (fdHorizontal, fdVertical, fdDiagonal);
TXiProgressBar = class(TGraphicControl)
private
FColorBorder: TColor;
FBackColorFace: TColor;
FBackColorGrad: TColor;
FForeColorFace: TColor;
FForeColorGrad: TColor;
FOrientation: TProgressBarOrientation;
FColorScheme: TColorScheme;
FPosition: Integer;
FMin: Integer;
FMax: Integer;
FStep: Integer;
procedure SetColors(Index: Integer; Value: TColor);
procedure SetPosition(Value: Integer);
procedure SetMin(Value: Integer);
procedure SetMax(Value: Integer);
procedure SetStep(Value: Integer);
procedure SetColorScheme(Value: TColorScheme);
procedure SetOrientation(Value: TProgressBarOrientation);
procedure GradientFillRect(Canvas: TCanvas; Rect: TRect;
StartColor, EndColor: TColor; Direction: TFillDirection);
protected
procedure Paint; override;
public
constructor Create(AOwner: TComponent); override;
procedure StepIt;
published
property ColorBorder: TColor index 0 read FColorBorder write SetColors;
property BackColorFace: TColor index 10 read FBackColorFace write SetColors;
property BackColorGrad: TColor index 11 read FBackColorGrad write SetColors;
property ForeColorFace: TColor index 20 read FForeColorFace write SetColors;
property ForeColorGrad: TColor index 21 read FForeColorGrad write SetColors;
property ColorScheme: TColorScheme read FColorScheme write SetColorScheme;
property Max: Integer read FMax write SetMax;
property Min: Integer read FMin write SetMin;
property Position: Integer read FPosition write SetPosition;
property Step: Integer read FStep write SetStep;
property Orientation: TProgressBarOrientation read FOrientation write SetOrientation;
property Align;
property Anchors;
property Constraints;
property Cursor;
property DragCursor;
property DragKind;
property DragMode;
property Enabled;
property HelpContext;
property HelpKeyword;
property Hint;
property ShowHint;
property Visible;
property OnContextPopup;
property OnDragDrop;
property OnDragOver;
property OnEndDock;
property OnEndDrag;
property OnMouseDown;
property OnMouseMove;
property OnMouseUp;
property OnStartDock;
property OnStartDrag;
property PopupMenu;
property OnClick;
end;
procedure Register;
implementation
procedure Register;
begin
RegisterComponents('Plus', [TXiProgressBar]);
end;
constructor TXiProgressBar.Create(AOwner: TComponent);
begin
inherited;
Width:= 200;
Height:= 16;
FMin:= 0;
FMax:= 100;
FStep:= 10;
FPosition:= 0;
FOrientation:= pbHorizontal;
ColorScheme:= csDesert;
end;
procedure TXiProgressBar.Paint;
var
ScrBmp: TBitmap;
Pos: Integer;
begin
if not Visible then Exit;
ScrBmp:= TBitmap.Create;
ScrBmp.Width:= ClientWidth;
ScrBmp.Height:= ClientHeight;
case FOrientation of
pbHorizontal: begin
Pos:= Round((ScrBmp.Width -2) * (FPosition-FMin) / (FMax-FMin));
GradientFillRect(ScrBmp.Canvas,
Rect(1, 1, ScrBmp.Width -1, ScrBmp.Height -1),
FBackColorFace, FBackColorGrad, fdVertical);
GradientFillRect(ScrBmp.Canvas,
Rect(0, 0, Pos, ScrBmp.Height),
FForeColorFace, FForeColorGrad, fdVertical);
ScrBmp.Canvas.Pen.Color:= ScrBmp.Canvas.Pixels[1, 1];
ScrBmp.Canvas.MoveTo(1, 1);
ScrBmp.Canvas.LineTo(1, Height);
ScrBmp.Canvas.Pen.Color:= ScrBmp.Canvas.Pixels[2, Height-2];
ScrBmp.Canvas.MoveTo(Pos, 1);
ScrBmp.Canvas.LineTo(Pos, Height);
end;
pbVertical: begin
Pos:= ScrBmp.Height-Round((ScrBmp.Height-2) * (FPosition - FMin) / abs(FMax-FMin)+1);
GradientFillRect(ScrBmp.Canvas,
Rect(1, 1, ScrBmp.Width -1, ScrBmp.Height),
FBackColorFace, FBackColorGrad, fdHorizontal);
GradientFillRect(ScrBmp.Canvas,
Rect(0, Pos, ScrBmp.Width, ScrBmp.Height),
FForeColorFace, FForeColorGrad, fdHorizontal);
ScrBmp.Canvas.Pen.Color:= ScrBmp.Canvas.Pixels[2, Height-2];
ScrBmp.Canvas.MoveTo(1, ScrBmp.Height-2);
ScrBmp.Canvas.LineTo(ScrBmp.Width, ScrBmp.Height-2);
ScrBmp.Canvas.Pen.Color:= ScrBmp.Canvas.Pixels[Width-3, Height-3];
ScrBmp.Canvas.MoveTo(1, Pos);
ScrBmp.Canvas.LineTo(ScrBmp.Width, Pos);
end;
end;
ScrBmp.Canvas.Pen.Color:= FColorBorder;
ScrBmp.Canvas.Brush.Style:= bsClear;
ScrBmp.Canvas.Rectangle(0, 0, ScrBmp.Width, ScrBmp.Height);
case FOrientation of
pbHorizontal: Canvas.Draw(0, 0, ScrBmp);
pbVertical: begin
// Rotate the image;
Canvas.Draw(0, 0, ScrBmp);
end;
end;
ScrBmp.Free;
end;
procedure TXiProgressBar.SetColors(Index: Integer; Value: TColor);
begin
case Index of
0: FColorBorder:= Value;
10: FBackColorFace:= Value;
11: FBackColorGrad:= Value;
20: FForeColorFace:= Value;
21: FForeColorGrad:= Value;
end;
FColorScheme:= csCustom;
invalidate;
end;
procedure TXiProgressBar.StepIt;
begin
Inc(FPosition, FStep);
Paint;
end;
procedure TXiProgressBar.SetPosition(Value: Integer);
begin
if Value < FMin then Exit;
FPosition:= Value;
Paint;
end;
procedure TXiProgressBar.SetMin(Value: Integer);
begin
if Value > FMax then Exit;
FMin:= Value;
Paint;
end;
procedure TXiProgressBar.SetMax(Value: Integer);
begin
if Value < FMin then Exit;
FMax:= Value;
Paint;
end;
procedure TXiProgressBar.SetStep(Value: Integer);
begin
FStep:= Value;
Paint;
end;
procedure TXiProgressBar.SetOrientation(Value: TProgressBarOrientation);
begin
FOrientation:= Value;
Invalidate;
end;
procedure TXiProgressBar.SetColorScheme(Value: TColorScheme);
begin
FColorScheme:= Value;
case FColorScheme of
csDesert: begin
FColorBorder:= $00005680;
FBackColorFace:= $00C6ECFF;
FBackColorGrad:= clWhite;
FForeColorFace:= $009BDEFF;
FForeColorGrad:= $00007BB7;
end;
csGrass: begin
FColorBorder:= $00156F37;
FBackColorFace:= $00CBF5DC;
FBackColorGrad:= clWhite;
FForeColorFace:= $00C9F5DB;
FForeColorGrad:= $0028C162;
end;
csRose: begin
FColorBorder:= $0000009D;
FBackColorFace:= $00D7D7FF;
FBackColorGrad:= clWhite;
FForeColorFace:= $00E8E8FF;
FForeColorGrad:= $008080FF;
end;
csSilver: begin
FColorBorder:= $006B6B6B;
FBackColorFace:= $00E0E0E0;
FBackColorGrad:= clWhite;
FForeColorFace:= $00F0F0F0;
FForeColorGrad:= $00ADADAD;
end;
csSky: begin
FColorBorder:= $00B35900;
FBackColorFace:= $00FFEAD5;
FBackColorGrad:= clWhite;
FForeColorFace:= $00FFEEDD;
FForeColorGrad:= $00FFAE5E;
end;
csSun: begin
FColorBorder:= $00006464;
FBackColorFace:= $00CEFFFF;
FBackColorGrad:= clWhite;
FForeColorFace:= $00DFFFFF;
FForeColorGrad:= $0005BCDC;
end;
csHackers: begin
FColorBorder:= clBlack;
FBackColorFace:= $00005500;
FBackColorGrad:= clGreen;
FForeColorFace:= $0091ECAE;
FForeColorGrad:= $0000AA00;
end;
csNight: begin
FColorBorder:= clBlack;
FBackColorFace:= $00804000;
FBackColorGrad:= $00A85400;
FForeColorFace:= $00FFCB97;
FForeColorGrad:= $00EC7600;
end;
csVelvet: begin
FColorBorder:= clBlack;
FBackColorFace:= $00000059;
FBackColorGrad:= $0046468C;
FForeColorFace:= $009F9FF2;
FForeColorGrad:= $004848BB;
end;
csMetal: begin
FColorBorder:= clBlack;
FBackColorFace:= $00464646;
FBackColorGrad:= $006F6F6F;
FForeColorFace:= $00CECECE;
FForeColorGrad:= $00737373;
end;
csViolet: begin
FColorBorder:= clBlack;
FBackColorFace:= $00800040;
FBackColorGrad:= $00CA0065;
FForeColorFace:= $00FFB7DB;
FForeColorGrad:= $00FF3399;
end;
csToxic: begin
FColorBorder:= clBlack;
FBackColorFace:= $002C5656;
FBackColorGrad:= $003E7B7B;
FForeColorFace:= $00BCDEDE;
FForeColorGrad:= $00468E8E;
end;
end;
invalidate;
end;
procedure TXiProgressBar.GradientFillRect(Canvas: TCanvas; Rect: TRect;
StartColor, EndColor: TColor; Direction: TFillDirection);
var
Steps: Integer;
StartR, StartG, StartB, EndR, EndG, EndB: Byte;
CrrR, CrrG, CrrB: Double;
IncR, IncG, incB: Double;
i: integer;
begin
case Direction of
fdVertical: Steps:= Rect.Bottom - Rect.Top;
fdHorizontal: Steps:= Rect.Right - Rect.Left;
fdDiagonal: Steps:= Rect.Bottom - Rect.Top + Rect.Right - Rect.Left;
end;
StartR:= GetRValue(StartColor); EndR:= GetRValue(EndColor);
StartG:= GetGValue(StartColor); EndG:= GetGValue(EndColor);
StartB:= GetBValue(StartColor); EndB:= GetBValue(EndColor);
IncR:= (EndR - StartR) / steps;
IncG:= (EndG - StartG) / steps;
IncB:= (EndB - StartB) / steps;
CrrR:= StartR;
CrrG:= StartG;
CrrB:= StartB;
for i:= 0 to Steps do begin
Canvas.Pen.Color:= RGB(Round(CrrR), Round(CrrG), Round(CrrB));
case Direction of
fdVertical: begin
Canvas.MoveTo(Rect.Left, i);
Canvas.LineTo(Rect.Right + Rect.Left, i);
end;
fdHorizontal: begin
Canvas.MoveTo(i, Rect.Top);
Canvas.LineTo(i, Rect.Top + Rect.Bottom);
end;
fdDiagonal: begin
Canvas.MoveTo(i, Rect.Top);
Canvas.LineTo(Rect.Left, i);
end;
end;
CrrR:= CrrR + IncR;
CrrG:= CrrG + IncG;
CrrB:= CrrB + IncB;
end;
end;
end.