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unit1
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ExtCtrls, ExtDlgs, StdCtrls,Jpeg;
type
TForm1 = class(TForm)
Button1: TButton;
Button2: TButton;
Button3: TButton;
Button4: TButton;
Image1: TImage;
Timer1: TTimer;
SavePictureDialog1: TSavePictureDialog;
Label1: TLabel;
procedure Button3Click(Sender: TObject);
procedure Button4Click(Sender: TObject);
procedure Button1Click(Sender: TObject);
procedure Timer1Timer(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure Label1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
uses Unit2, Unit4;
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
begin
form1.Hide;
timer1.Enabled:=true;
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
form1.Hide;
form2.show;
end;
procedure SaveAsJPG ;
var
jpg: TJPEGImage;
begin
jpg := TJPEGImage.Create;
try
with jpg do
begin
CompressionQuality := 42;
Compress ;
Assign(form1.Image1.Picture.Bitmap);
SaveToFile(form1.savepicturedialog1.FileName+'.jpg');
end;
finally
jpg.Free;
end;
messagebeep(mb_ok);
end;
procedure SaveAsBMP ;
begin
with form1.image1.Picture do
SaveToFile(form1.savepicturedialog1.FileName+'.bmp');
messagebeep(mb_ok);
end;
procedure TForm1.Button3Click(Sender: TObject);
begin
if SavePictureDialog1.Execute then
begin
if savepicturedialog1.filterindex = 1 then
SaveAsJPG
else
SaveAsBMP;
end
end;
procedure TForm1.Button4Click(Sender: TObject);
begin
form1.close;
end;
procedure TForm1.Label1Click(Sender: TObject);
begin
form4.show;
end;
procedure TForm1.Timer1Timer(Sender: TObject);
var
Fullscreen:Tbitmap;
Fullscreencanvas:tcanvas;
dc:HDC;
begin
timer1.Enabled:=false;
fullscreen:=tbitmap.create;
fullscreen.width:=screen.Width;
fullscreen.Height:=screen.Height;
dc:=getdc(0);
fullscreencanvas:=tcanvas.Create;
fullscreencanvas.Handle:=dc;
fullscreen.Canvas.CopyRect(rect(0,0,screen.Width,screen.Height),
fullscreencanvas,rect(0,0,screen.Width,screen.Height));
fullscreencanvas.Free;
releasedc(0,dc);
image1.Picture.Bitmap:=fullscreen;
fullscreen.Free;
form1.Show;
messagebeep(mb_ok);
end;
end.
{//reference
Choose SaveAsJPG and SaveAsBMP using savepicturedialog
http://www.delphigroups.info/2/38/204152.html
BMP2JPG
http://docwiki.embarcadero.com/CodeExamples/XE4/en/TJPEGImageAssign_(Delphi)
AreaSnap function
http://blog.sina.com.cn/s/blog_3ec38a670100064s.html
Icon
https://www.iconfinder.com/icons/64677/snapshot_icon#size=32
}
unit2
unit Unit2;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type
TForm2 = class(TForm)
Label1: TLabel;
Label2: TLabel;
Button1: TButton;
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
procedure CreateParams(var Params:TCreateParams); override;
public
{ Public declarations }
end;
var
Form2: TForm2;
implementation
uses Unit1, Unit3;
{$R *.dfm}
procedure TForm2.Button1Click(Sender: TObject);
begin
form2.Hide;
form3.timer1.Enabled:=true;
end;
procedure TForm2.CreateParams(var Params:TCreateParams);
begin
inherited;
Params.WndParent:= 0;
end;
procedure TForm2.FormClose(Sender: TObject; var Action: TCloseAction);
begin
form2.Hide;
sleep(300);
form1.Show;
end;
end.
unit3
unit Unit3;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ExtCtrls, StdCtrls;
type
TForm3 = class(TForm)
Timer1: TTimer;
Image1: TImage;
Label1: TLabel;
Timer2: TTimer;
procedure Timer1Timer(Sender: TObject);
procedure FormKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure Timer2Timer(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure Image1MouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
procedure Image1MouseMove(Sender: TObject; Shift: TShiftState; X,
Y: Integer);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form3: TForm3;
foldx,x1,y1,x2,y2,oldx,oldy,foldy:integer;
flag,trace:boolean;
implementation
uses Unit1, Unit2;
{$R *.dfm}
procedure TForm3.FormClose(Sender: TObject; var Action: TCloseAction);
begin
form3.free;
form1.show;
end;
procedure TForm3.FormCreate(Sender: TObject);
begin
timer2.Enabled:= true;
end;
procedure TForm3.FormKeyDown(Sender: TObject; var Key: Word;
Shift: TShiftState);
begin
if key=27 then
form3.Close();
end;
procedure TForm3.Image1MouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
var
width,height:integer;
newbitmap:TBitmap;
begin
if(trace=false) then
begin
flag:=false;
with image1.Canvas do
begin
moveto(foldx,0);
lineto(foldx,screen.Height);
moveto(0,foldy);
lineto(screen.Width,foldy);
end;
x1:=x;
y1:=y;
oldx:=x;
oldy:=y;
trace:=true;
image1.Canvas.Pen.Color:=clblack;
image1.Canvas.Brush.Style:=bsclear;
end
else
begin
x2:=x;
y2:=y;
trace:=false;
image1.Canvas.Rectangle(x1,y1,oldx,oldy);
width:=abs(x2-x1);
height:=abs(y2-y1);
form3.Image1.Width:=width;
form3.Image1.Height:=height;
newbitmap:=Tbitmap.Create;
newbitmap.Width:=width;
newbitmap.Height:=height;
newbitmap.Canvas.CopyRect(rect(0,0,width,height),form3.Image1.Canvas,
rect(x1,y1,x2,y2));
form1.Image1.Picture.Bitmap:=newbitmap;
newbitmap.Free;
form3.Hide;
sleep(300);
form1.Show;
end;
end;
procedure TForm3.Image1MouseMove(Sender: TObject; Shift: TShiftState; X,
Y: Integer);
begin
if trace=true then
begin
with image1.Canvas do
begin
rectangle(x1,y1,oldx,oldy);
rectangle(x1,y1,x,y);
oldx:=x;
oldy:=y;
end;
end
else if flag=true then
begin
with image1.Canvas do
begin
moveto(foldx,0);
lineto(foldx,screen.Height);
moveto(0,foldy);
lineto(screen.Width,foldy);
moveto(x,0);
lineto(x,screen.Height);
moveto(0,y);
lineto(screen.Width,y);
foldx:=x;
foldy:=y;
end;
end;
end;
procedure TForm3.Timer1Timer(Sender: TObject);
var
Fullscreen:Tbitmap;
Fullscreencanvas:tcanvas;
dc:HDC;
begin
timer1.Enabled:=false;
fullscreen:=tbitmap.create;
fullscreen.width:=screen.Width;
fullscreen.Height:=screen.Height;
dc:=getdc(0);
fullscreencanvas:=tcanvas.Create;
fullscreencanvas.Handle:=dc;
fullscreen.Canvas.CopyRect(rect(0,0,screen.Width,screen.Height),
fullscreencanvas,rect(0,0,screen.Width,screen.Height));
fullscreencanvas.Free;
releasedc(0,dc);
form3.image1.Picture.Bitmap:=fullscreen;
fullscreen.Free;
form3.Show;
messagebeep(mb_ok);
foldx:=-1;
foldy:=-1;
image1.Canvas.Pen.Mode:=pmnot;
image1.Canvas.Pen.Color:=clblack;
image1.Canvas.Brush.Style:=bsclear;
flag:=true;
end;
procedure TForm3.Timer2Timer(Sender: TObject);
begin
label1.Visible := Not label1.visible;
end;
end.
unit4
unit Unit4;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type
TForm4 = class(TForm)
Button1: TButton;
Label1: TLabel;
procedure Button1Click(Sender: TObject);
procedure FormDeactivate(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form4: TForm4;
implementation
{$R *.dfm}
procedure TForm4.Button1Click(Sender: TObject);
begin
form4.hide;
end;
procedure TForm4.FormDeactivate(Sender: TObject);
begin
form4.hide;
end;
end.
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