Contributor: MATTHEW CSULIK
{
Hello!
I'm from Hungary, and I love the SWAG!
It's a very useful site, and I use it since 2 years.
I send to You a Delphi 2.0 component:
- TLCDControl (it looks like WinNT 4.0 Task Manager's LCD)
resource file included (XX3402)
This component was made for Delphi 2.0, but it is also working on Delphi 1.0
(I think).
I send it to You, because I don't know any other addresses about SWAG.
I hope, this component will be useful for somebody.
Kind regards
Matthew Csulik
matthew-c@usa.net
P.S.: To extract the resource file, use WinZip95 (the 32bit version)!
-----------------------------------------------------------------------
- -
- LCDControl.pas -
- ************** -
- This component is completely FREE. -
- -
-----------------------------------------------------------------------
unit LCDControl;
{ written by Matthew }
{ matthew-c@usa.net }
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs;
type
TNumberType = (ntNone, ntCharK, ntPercent);
TLCDControl = class(TGraphicControl)
private
NumBmp: array[0..9] of TBitmap;
CharKBmp: TBitmap;
PercentBmp: TBitmap;
OnBmp: TBitmap;
OffBmp: TBitmap;
FNumber: integer;
FNumberType: TNumberType;
FNumberMax: integer;
procedure SetNumber(Value: integer);
procedure SetNumberType(Value: TNumberType);
procedure SetNumberMax(Value: integer);
protected
procedure Paint; override;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
procedure WriteLCDNum(Num: integer; X,Y: integer; ACanvas: TCanvas);
procedure WriteNumber(Num: integer; NumType: TNumberType; X,Y:
integer; ACanvas: TCanvas);
function GetNumberLength(Num: integer; NumType: TNumberType): integer;
procedure DisplayTicks(Rect: TRect; Num: integer; ACanvas: TCanvas);
procedure UpdateLCD(UpdateCanvas: TCanvas);
published
property Number: integer read FNumber write SetNumber;
property NumberType: TNumberType read FNumberType write SetNumberType;
property NumberMax: integer read FNumberMax write SetNumberMax;
end;
procedure Register;
implementation
{$R LCD.RES}
constructor TLCDControl.Create(AOwner: TComponent);
var
i: integer;
begin
inherited Create(AOwner);
for i:= 0 to 9 do
begin
NumBmp[i]:= TBitmap.Create;
NumBmp[i].LoadFromResourceID(HInstance, i);
end;
CharKBmp:= TBitmap.Create;
CharKBmp.LoadFromResourceName(HInstance, 'CHARK');
PercentBmp:= TBitmap.Create;
PercentBmp.LoadFromResourceName(HInstance, 'PERCENT');
OnBmp:= TBitmap.Create;
OnBmp.LoadFromResourceName(HInstance, 'ON');
OffBmp:= TBitmap.Create;
OffBmp.LoadFromResourceName(HInstance, 'OFF');
FNumber:= 0;
FNumberMax:= 100;
FNumberType:= ntNone;
Width:= 100;
Height:= 120;
end;
procedure TLCDControl.Paint;
begin
with inherited Canvas do
begin
Brush.Color:= clBlack;
FillRect(Self.ClientRect);
Pen.Color:= clbtnShadow;
Polyline([Point(Width-1,0),Point(0,0),Point(0,Height-1)]);
Pen.Color:= clbtnHighlight;
Polyline([Point(Width-1,1),Point(Width-1,Height-1),Point(1,Height-1)]);
end;
UpdateLCD(Canvas);
end;
destructor TLCDControl.Destroy;
var
i: integer;
begin
for i:= 0 to 9 do
begin
NumBmp[i].Free;
end;
CharKBmp.Free;
PercentBmp.Free;
OnBmp.Free;
OffBmp.Free;
inherited Destroy;
end;
procedure TLCDControl.SetNumber(Value: integer);
begin
if (FNumber <> Value) and (Value <= NumberMax) then
begin
FNumber:= Value;
UpdateLCD(Canvas);
end;
end;
procedure TLCDControl.SetNumberMax(Value: integer);
begin
if (Value > 0) and (Value >= Number) then
begin
FNumberMax:= Value;
Invalidate;
end;
end;
procedure TLCDControl.SetNumberType(Value: TNumberType);
begin
if FNumberType <> Value then
begin
FNumberType:= Value;
UpdateLCD(Canvas);
end;
end;
procedure TLCDControl.WriteLCDNum(Num: integer; X,Y: integer; ACanvas: TCanvas);
begin
with ACanvas do
begin
Brush.Color:= clBlack;
Draw(X,Y,NumBmp[Num]);
end;
end;
procedure TLCDControl.WriteNumber(Num: integer; NumType: TNumberType; X,Y:
integer; ACanvas: TCanvas);
var
NumLength: integer;
NumStr: string;
CNum: integer;
CX: integer;
i: integer;
begin
CX:= X;
NumStr:= IntToStr(Num);
NumLength:= Length(NumStr);
for i:= 1 to NumLength do
begin
CNum:= StrToInt(NumStr[i]);
WriteLCDNum(CNum, CX, Y, ACanvas);
Inc(CX, 8);
end;
if NumType <> ntNone then
begin
with ACanvas do
begin
Brush.Color:= clBlack;
case NumType of
ntCharK:
begin
Draw(CX,Y,CharKBmp);
end;
ntPercent:
begin
Draw(CX,Y,PercentBmp);
end;
end;
end;
end;
end;
function TLCDControl.GetNumberLength(Num: integer; NumType: TNumberType):
integer;
var
NumLength: integer;
NumStr: string;
begin
Result:= 0;
NumStr:= IntToStr(Num);
NumLength:= Length(NumStr);
case NumType of
ntNone:
Result:= NumLength * 8;
ntCharK:
Result:= (NumLength + 1) * 8;
ntPercent:
Result:= (NumLength + 1) * 8;
end;
end;
procedure TLCDControl.DisplayTicks(Rect: TRect; Num: integer; ACanvas: TCanvas);
var
TicksH: integer;
Ticks: integer;
TicksOn: integer;
TicksOff: integer;
i: integer;
Center: integer;
SY: integer;
begin
SY:= Rect.Top;
TicksH:= Rect.Bottom-Rect.Top;
Center:= (Rect.Right-Rect.Left) div 2;
Ticks:= TicksH div 3;
TicksOn:= (Ticks * Num) div NumberMax;
TicksOff:= Ticks-TicksOn;
with ACanvas do
begin
Brush.Color:= clBlack;
for i:= 1 to TicksOff do
begin
Draw(Center-17,SY,OffBmp);
Draw(Center+1,SY,OffBmp);
Inc(SY,3);
end;
for i:= 1 to TicksOn do
begin
Draw(Center-17,SY,OnBmp);
Draw(Center+1,SY,OnBmp);
Inc(SY,3);
end;
end;
end;
procedure TLCDControl.UpdateLCD(UpdateCanvas: TCanvas);
var
CX: integer;
begin
DisplayTicks(Rect(2,2,Self.Width-2,Self.Height-20),Number,UpdateCanvas);
CX:= (Self.Width div 2)-(GetNumberLength(Number,NumberType) div 2);
UpdateCanvas.Brush.Color:= clBlack;
UpdateCanvas.FillRect(Rect(2,Self.Height-15,Self.Width-2,Self.Height-2));
WriteNumber(Number,NumberType,CX,Self.Height-15,UpdateCanvas);
end;
procedure Register;
begin
RegisterComponents('Matthew', [TLCDControl]);
end;
end.
{ the following contains addition files that should be included with this
file. To extract, you need XX3402 available with the SWAG distribution.
1. Cut the text below out, and save to a file .. filename.xx
2. Use XX3402 : xx3402 d filename.xx
3. The decoded file should be created in the same directory.
4. If the file is a archive file, use the proper archive program to
extract the members.
{ ------------------ CUT ----------------------}
*XX3402-000656-230497--72--85-06793------LCDRES.ZIP--1-OF--1
I2g1--E++U+6+BNUZm7zSdQJaU+++Bk-+++C++++H2B2EqxiR57jP0tYMr7XM4-UI+1WzzwV
4-poA16ka61ZaFV045kMb-ZQUBWTkEz60k9GDZ-p+U7w91+x4Y+g+QKA1--V-IM458+-X-UO
4W+I0682UAG-+kR+BcAFm53U0UH-PjrDM6k2nDz1kKRnVC3+BhSe-OgK9C-O+4Mn94-M+07U
sY+aL-kc+FRT-J41P+t6+cUMu0vCd8E+F7XW05Mt5-EXVkY+I2g1--E++U+6+4dUZm9FyTbH
5U2++Bk7+++5++++H2B29b7ZQwqIEKf1A--3TtEoHZEcDc6KLKHVGkGHIUWodTEkKTcECM1c
oeTknNkzYdd4RYmx8R8AjwMS0Tko4UE+Vidvfu4ReQfB8rnUU2zI5Bzk3SP9wabpgrN53REX
hM-DJtWmlXpc4Vz27QKVunftcrg2mUJllyUVBJdc1EjPUeAYb9FZGZh4TSLT-TsOfxVn-wT2
v8EHQCz239LQUvLyrPcB+GTeCP0zgyOMs0sdRQBRzUBrCv0MvMKSXgo2Iw5CpttKp09NKFD3
4hyRjx4My7iGRH4nGgPActIqx7+VGav699aMSNaISJXbSQmff5cXp1vGxuUr5f8fwqqjG-nL
SNqubmDBMmumjnT4n7gQunn8lQnP5Djt1qNYJKSt6yslLk-EGk20AUgI++6+0+1KM7QWTreL
3Nc+++1Q+E++1U+++++++++++0++hc2+++++H2B2EqxiR57jP0tYMr7EGk20AUgI++6+0+-e
M7QWoTbtols-++1Q0E++-k+++++++++++0++hc54++++H2B29b7ZQp-9-EM++++++U+0+52+
+++7+U++++++
***** END OF BLOCK 1 *****