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| unit PngButton;
interface
uses
Forms,Windows,Messages,Graphics,
ExtCtrls,Classes,SysUtils,Variants,Dialogs,Controls,StdCtrls,Pngimage;
type
TPngButton = class(TCustomControl)
private
FLeaveBackground: TPngImage;
FEnterBackground: TPngImage;
FInterval: Integer;
FText: String;
FFont: TFont;
MouseEnter: Boolean;
procedure SetLeaveBackground(Value: TPngImage);
procedure SetEnterBackground(Value: TPngImage);
procedure SetFont(Value: TFont);
procedure SetInterval(Value: Integer);
procedure SetText(Value: String);
procedure WMLeave(var Message: TMessage); message CM_MOUSELEAVE;
procedure WMEnter(var Message: TMessage); message CM_MOUSEENTER;
procedure Morphing(Png,Png1,Png2: TPNGimage);
public
procedure Paint; override;
constructor Create(AOWner: TComponent); override;
destructor Destroy; override;
published
property onClick;
property Font;
property Caption: String read FText write SetText;
property LeaveImage: TPngImage read FLeaveBackground write SetLeaveBackground;
property EnterImage: TPngImage read FEnterBackground write SetEnterBackground;
property Interval: Integer read FInterval write SetInterval;
property ShowHint;
end;
procedure Register;
implementation
procedure Register;
begin
RegisterComponents('zloY_comp',[TPngButton]);
end;
procedure TPngButton.SetFont(Value: TFont);
begin
FFont.Assign(Value);
end;
procedure TPngButton.SetLeaveBackground(Value: TPngImage);
begin
FLeaveBackground.Assign(Value);
Invalidate;
end;
procedure TPngButton.SetEnterBackground(Value: TPngImage);
begin
FEnterBackground.Assign(Value);
Invalidate;
end;
procedure TPngButton.SetInterval(Value: Integer);
begin
if Value < 0 then Value:= 0;
FInterval:= Value;
end;
procedure TPngButton.SetText(Value: String);
begin
FText:= Value;
end;
constructor TPngButton.Create(AOWner: TComponent);
begin
inherited;
FLeaveBackground:= TPngImage.Create;
FEnterBackground:= TPngImage.Create;
Parent:= TForm(AOWner);
Parent.DoubleBuffered:= True;
FInterval:= 300;
end;
destructor TPngButton.Destroy;
begin
inherited;
FLeaveBackground.Destroy;
FEnterBackground.Destroy;
end;
procedure TPngButton.Morphing(Png,Png1,Png2: TPNGimage);
var
i: integer;
x, y: integer;
p1, p2, p: PByteArray;
c: integer;
k: integer;
begin
Png := Tpngimage.Create;
if Png1.Height < Png2.Height then
begin
Png.Height:= Png1.Height;
Png2.Height:= Png2.Height;
end
else
begin
Png.Height := Png2.Height;
Png1.Height := Png2.Height;
end;
if Png1.Width < Png2.Width then
begin
Png.Width := Png1.Width;
Png2.Width := Png1.Width;
end
else
begin
Png.Width := Png2.Width;
Png1.Width := Png2.Width;
end;
Canvas.Draw(0,0,Png1);
SetBkMode(Canvas.Handle,TRANSPARENT);
Canvas.TextOut((Width div 2) - (Canvas.TextWidth(FText) div 2),(Height div 2) - (Canvas.TextHeight(FText) div 2),FText);
SetBkMode(Canvas.Handle,OPAQUE);
for i := 1 to FInterval - 1 do
begin
for y := 0 to Png.Height - 1 do
begin
p := Png.ScanLine[y];
p1 := Png1.ScanLine[y];
p2 := Png2.ScanLine[y];
for x := 0 to Png.Width * 3 - 1 do
p^[x] := round((p1^[x] * (FInterval - i) + p2^[x] * i) / FInterval);
end;
Canvas.Draw(0,0,Png);
SetBkMode(Canvas.Handle,TRANSPARENT);
Canvas.TextOut((Width div 2) - (Canvas.TextWidth(FText) div 2),(Height div 2) - (Canvas.TextHeight(FText) div 2),FText);
SetBkMode(Canvas.Handle,OPAQUE);
Application.ProcessMessages;
if Application.Terminated then
break;
end;
Canvas.Draw(0,0,Png2);
SetBkMode(Canvas.Handle,TRANSPARENT);
Canvas.TextOut((Width div 2) - (Canvas.TextWidth(FText) div 2),(Height div 2) - (Canvas.TextHeight(FText) div 2),FText);
SetBkMode(Canvas.Handle,OPAQUE);
Png.Destroy;
end;
procedure TPngButton.WMLeave(var Message: TMessage);
begin
inherited;
if FEnterBackground.PngImage.Handle = 0 then Exit;
Morphing(FEnterBackground.PngImage,FLeaveBackground.PngImage);
end;
procedure TPngButton.WMEnter(var Message: TMessage);
begin
if FEnterBackground.PngImage.Handle = 0 then Exit;
Morphing(FLeaveBackground.PngImage,FEnterBackground.PngImage);
end;
procedure TPngButton.Paint;
begin
inherited;
Canvas.Font:= Font;
SetBkMode(Canvas.Handle,TRANSPARENT);
Canvas.TextOut((Width div 2) - (Canvas.TextWidth(FText) div 2),(Height div 2) - (Canvas.TextHeight(FText) div 2),FText);
SetBkMode(Canvas.Handle,OPAQUE);
if FLeaveBackground.PngImage.Handle = 0 then Exit;
Canvas.Draw(0,0,FLeaveBackground.PngImage);
SetBkMode(Canvas.Handle,TRANSPARENT);
Canvas.TextOut((Width div 2) - (Canvas.TextWidth(FText) div 2),(Height div 2) - (Canvas.TextHeight(FText) div 2),FText);
SetBkMode(Canvas.Handle,OPAQUE);
end;
end. |
(
Сообщение от Alex_pac
