[]s
Walter Alves Chagas Junior
Projeto e desenvolvimento de sistemas
Telemont Engenharia de telecomunicações S/A
Belo Horizonte - MG - Brasil
[EMAIL PROTECTED]
Fone: (31) 3389-8215 Fax: (31) 3389-8200
-----Mensagem original-----
De: delphi-br@yahoogrupos.com.br [mailto:[EMAIL PROTECTED]
nome de Luiz Escobar
Enviada em: quarta-feira, 31 de maio de 2006 21:01
Para: delphi-br@yahoogrupos.com.br
Assunto: RES: [delphi-br] Botões redondos... codigo fonte botão de
bitmap´s...
bom sei que vc quer um botão redondo, e isso parece dificil.. bom aqui tem
um exemplo de um botão
feito atravez de um bitmap, qualquer bitmap vira um botão...
ele cria o efeito de Lighter, quando passa o mouse encima, Darker, quando
clica, acertei esta parte, comia um pedaçinho da imagem quando era justa,
Disabled, (essa eu implementei, ehehhehe), quando vc disabilita o botão...
talvez ajude...
como não sabia o endereço postei o código....
se alguem gostar e implementar algo novo, posta ai....
Luiz Escobar
//==============================================================
//jvBitmapButton.pas
// versão 2.1c modify by Luiz Escobar
//--------------------------------------------------------------------------
-------------------------------------
unit jvBitmapButton;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs;
type
TjvBitmapButton = class(TGraphicControl)
private
FBitmap: TBitmap;
FLighter: TBitmap;
FDarker: Tbitmap;
FDisabled: Tbitmap; // by Luiz Escobar
FPushDown:boolean;
FMouseOver:boolean;
FLatching: boolean;
FDown: boolean;
FHotTrack: boolean;
Fenable: boolean; // by Luiz Escobar
procedure SetBitmap(const Value: TBitmap);
procedure MakeDarker;
procedure MakeLighter;
procedure MakeDisabled; // by Luiz Escobar
procedure SetLatching(const Value: boolean);
procedure SetDown(const Value: boolean);
procedure SetHotTrack(const Value: boolean);
function GetEnabled : Boolean; // by Luiz Escobar
procedure SetEnabled( const Value: boolean); // by Luiz Escobar
{ Private declarations }
protected
{ Protected declarations }
procedure MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y:
Integer);override;
procedure MouseUp(Button: TMouseButton; Shift: TShiftState; X, Y:
Integer);override;
procedure MouseMove(Shift: TShiftState; X, Y: Integer);override;
procedure Click;override;
procedure CMMouseLeave(var Message:TMessage); message CM_MouseLeave;
procedure Loaded;override;
procedure Resize;override;
public
{ Public declarations }
constructor Create(AOwner:TComponent);override;
destructor Destroy;override;
procedure Paint; override;
published
{ Published declarations }
property Bitmap:TBitmap read FBitmap write SetBitmap;
property Down:boolean read FDown write SetDown;
property Latching:boolean read FLatching write SetLatching;
property HotTrack:boolean read FHotTrack write SetHotTrack;
property Enable:boolean read GetEnabled write SetEnabled; // by Luiz
Escobar
property onclick;
property onmousedown;
property onmouseup;
end;
procedure Register;
implementation
procedure Register;
begin
RegisterComponents('ESC_UTIL', [TjvBitmapButton]);
end;
{ TjvBitmapButton }
function TjvBitmapButton.GetEnabled: boolean; // by Luiz Escobar
begin
result := enabled;
end;
procedure TjvBitmapButton.SetEnabled( const Value : boolean ); // by Luiz
Escobar
begin
enabled := value;
fenable := enabled;
Paint;
end ;
procedure TjvBitmapButton.Click;
begin
inherited;
if FPushDown then
if assigned(onclick) then
onclick(self);
end;
constructor TjvBitmapButton.Create(AOwner: TComponent);
begin
inherited;
width:=24;
height:=24;
FPushDown:=false;
FMouseOver:=false;
FLatching:=false;
FHotTrack:=true;
FDown:=false;
FBitmap:=TBitmap.create;
Fbitmap.width:=24;
Fbitmap.Height:=24;
Fbitmap.canvas.brush.color:=clgray;
FBitmap.canvas.FillRect (rect(1,1,23,23));
FLighter:=Tbitmap.create;
FDarker:=Tbitmap.create;
FDisabled:=Tbitmap.create; // by Luiz Escobar
Fenable := enabled; // by Luiz Escobar
end;
destructor TjvBitmapButton.Destroy;
begin
FBitmap.free;
FLighter.free;
FDarker.free;
FDisabled.free; // by Luiz Escobar
inherited;
end;
procedure TjvBitmapButton.MouseDown(Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
begin
inherited;
if FBitmap.canvas.pixels[x,y]<>Fbitmap.canvas.pixels[0,FBitmap.height-1]
then
FPushDown:=true
else
FPushDown:=false;
Paint;
if assigned(onmousedown) then
onmousedown(self,button,shift,x,y);
end;
procedure TjvBitmapButton.MouseUp(Button: TMouseButton; Shift: TShiftState;
X, Y: Integer);
begin
inherited;
FPushDown:=false;
if Latching then
FDown:= not FDown
else
FDown:=false;
Paint;
if assigned(onmouseup) then
onmouseup(self,button,shift,x,y);
end;
procedure TjvBitmapButton.Paint;
var Acolor:TColor;
begin
inherited;
if assigned(FBitmap) then
begin
AColor:=FBitmap.canvas.pixels[0,FBitmap.height-1];
Fbitmap.transparent:=true;
Fbitmap.transparentcolor:=Acolor;
FLighter.transparent:=true;
Flighter.TransparentColor :=AColor;
FDarker.transparent:=true;
FDarker.TransparentColor :=AColor;
AColor:=FDisabled.canvas.pixels[0,FDisabled.height-1];
FDisabled.transparent:=true;
FDisabled.TransparentColor :=AColor;
if enabled then begin // by Luiz Escobar
if FPushdown then begin
canvas.draw(1,1,FDarker)
end else begin
if Down then
canvas.Draw(1,1,FDarker)
else if (FMouseOver and FHotTrack) then
canvas.draw(0,0,FLighter)
else canvas.Draw (0,0,FBitmap);
end;
end else canvas.Draw(0,0,FDisabled); // by Luiz Escobar
end;
end;
procedure TjvBitmapButton.SetBitmap(const Value: TBitmap);
begin
FBitmap.assign(Value);
FBitmap.transparent:=true;
FBitmap.TransparentColor :=FBitmap.Canvas.pixels[0,FBitmap.Height-1];
width:=FBitmap.Width ;
height:=FBitmap.Height ;
MakeLighter;
MakeDarker;
MakeDisabled;
end;
procedure TjvBitmapButton.MakeDisabled; // procedure by Luiz Escobar
var
c, x, y: Integer;
PxlColor: TColor;
R: TRect;
Offset, Flags: Integer;
DrawPressed: Boolean;
Image: TBitmap;
Bitmap: TBitmap;
begin
FDisabled.Width := FBitmap.Width;
FDisabled.Height := FBitmap.Height;
FDisabled.PixelFormat := FBitmap.PixelFormat;
FDisabled.Assign( FBitmap );
for x := 0 to FBitmap.Width - 1 do
for y := 0 to FBitmap.Height - 1 do
begin
PxlColor := ColorToRGB(FBitmap.Canvas.Pixels[x, y]);
c := Round((((PxlColor shr 16) + ((PxlColor shr 8) and $00FF) +
(PxlColor and $0000FF)) div 3)) div 2 + 96;
FDisabled.Canvas.Pixels[x, y] := RGB(c, c, c);
end;
end;
procedure TjvBitmapButton.MakeLighter;
var p1,p2:Pbytearray;
x,y:integer;
rt,gt,bt:byte;
r,g,b:byte;
AColor:TColor;
begin
FLighter.Width :=FBitmap.Width ;
FLighter.Height :=FBitmap.height;
Acolor:=colortorgb(FBitmap.canvas.pixels[0,FBitmap.height-1]);
rt:=GetRValue(Acolor);
gt:=GetGValue(AColor);
bt:=getBValue(AColor);
FBitmap.PixelFormat :=pf24bit;
FLighter.PixelFormat :=pf24bit;
for y:=0 to Fbitmap.height-1 do
begin
p1:=Fbitmap.ScanLine [y];
p2:=FLighter.ScanLine [y];
for x:=0 to FBitmap.width-1 do
begin
if (p1[x*3]=bt)and (p1[x*3+1]=gt)and (p1[x*3+2]=rt) then
begin
p2[x*3]:=p1[x*3];
p2[x*3+1]:=p1[x*3+1];
p2[x*3+2]:=p1[x*3+2];
end
else
begin
p2[x*3]:=$FF-round(0.8*abs($FF-p1[x*3]));
p2[x*3+1]:=$FF-round(0.8*abs($FF-p1[x*3+1]));
p2[x*3+2]:=$FF-round(0.8*abs($FF-p1[x*3+2]));
end;
end;
end;
end;
procedure TjvBitmapButton.MakeDarker;
var p1,p2:Pbytearray;
x,y:integer;
rt,gt,bt:byte;
r,g,b:byte;
AColor:TColor;
begin
FDarker.Width :=FBitmap.Width ;
FDarker.Height :=FBitmap.height;
Acolor:=colortorgb(FBitmap.canvas.pixels[0,FBitmap.height-1]);
rt:=GetRValue(Acolor);
gt:=GetGValue(AColor);
bt:=getBValue(AColor);
FBitmap.PixelFormat :=pf24bit;
FDarker.PixelFormat :=pf24bit;
for y:=0 to Fbitmap.height-1 do
begin
p1:=Fbitmap.ScanLine [y];
p2:=FDarker.ScanLine [y];
for x:=0 to FBitmap.width-1 do
begin
if (p1[x*3]=bt)and (p1[x*3+1]=gt)and (p1[x*3+2]=rt) then
begin
p2[x*3]:=p1[x*3];
p2[x*3+1]:=p1[x*3+1];
p2[x*3+2]:=p1[x*3+2];
end
else
begin
p2[x*3]:=round(0.7*p1[x*3]);
p2[x*3+1]:=round(0.7*p1[x*3+1]);
p2[x*3+2]:=round(0.7*p1[x*3+2]);
end
end;
end;
end;
procedure TjvBitmapButton.CMMouseLeave(var Message: TMessage);
begin
FMouseOver:=false;
Paint;
end;
procedure TjvBitmapButton.Loaded;
begin
inherited;
if not FBitmap.Empty then
begin
MakeDarker;
MakeLighter;
MakeDisabled;
end;
end;
procedure TjvBitmapButton.SetLatching(const Value: boolean);
begin
FLatching := Value;
if not FLatching then
begin
FDown:=false;
paint;
end;
end;
procedure TjvBitmapButton.SetDown(const Value: boolean);
begin
if FLatching then
begin
FDown := Value;
paint;
end
else
begin
FDown:=false;
paint;
end;
end;
procedure TjvBitmapButton.Resize;
begin
inherited;
if assigned(Fbitmap) then
begin
width:=FBitmap.width+1;
height:=FBitmap.Height+1;
end
else
begin
width:=24;
height:=24;
end;
end;
procedure TjvBitmapButton.SetHotTrack(const Value: boolean);
begin
FHotTrack := Value;
end;
procedure TjvBitmapButton.MouseMove(Shift: TShiftState; X, Y: Integer);
var Value:boolean;
begin
inherited;
Value:=
FBitmap.canvas.pixels[x,y]<>Fbitmap.canvas.pixels[0,FBitmap.height-1];
if value<>FMouseOver then
begin
FMouseOver:=value;
Paint;
end;
if assigned(onmousemove) then
onmousemove(self,shift,x,y);
end;
end.
--
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