mirror of
https://github.com/Laex/Delphi-OpenCV.git
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33337ea3db
[*] samples/MultiDemo/FaceDetectAndLockWorkstation/LockWorkstation.dpr Signed-off-by: Michael Grigorev <sleuthhound@gmail.com>
520 lines
15 KiB
ObjectPascal
520 lines
15 KiB
ObjectPascal
unit uMainForm;
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{$R images.res}
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interface
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uses
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Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
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Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.ExtCtrls, Vcl.StdCtrls, Vcl.Samples.Spin,
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CoolTrayIcon, core.types_c, core_c, highgui_c, objdetect, cvUtils, Vcl.Menus, Vcl.ImgList,
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JvComponentBase, JvThreadTimer;
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const
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WM_NOFACE = WM_USER+1;
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WM_NOCAMERA = WM_NOFACE+1;
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type
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pCtx = ^TCtx;
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TCtx = packed record
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MyCapture: pCvCapture; // Capture handle
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MyInputImage: pIplImage; // Input image
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MyStorage: pCvMemStorage; // Memory storage
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TotalFaceDetect: Integer; // Total face detect
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end;
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TMainForm = class(TForm)
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LWFrameOutput: TPaintBox;
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LWTimer: TTimer;
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LWCoolTrayIcon: TCoolTrayIcon;
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LWPopupMenu: TPopupMenu;
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LWShow: TMenuItem;
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LWExit: TMenuItem;
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LWImageList: TImageList;
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LWThreadTimer: TJvThreadTimer;
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LWGBFaceDetectSettings: TGroupBox;
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LTotalFaceDetect: TLabel;
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LTotalFace: TLabel;
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LWTimerRadioGroup: TRadioGroup;
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LWSpinEdit: TSpinEdit;
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LWLTimerMS: TLabel;
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LWLWaitTime: TLabel;
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LWSpinEditWaitTime: TSpinEdit;
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LWLWaitTimeMS: TLabel;
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LWStopLockTimer: TCheckBox;
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LWLTotalPCLock: TLabel;
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LWButtonStartStop: TButton;
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LWButtonAbout: TButton;
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procedure FormCreate(Sender: TObject);
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procedure FormDestroy(Sender: TObject);
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procedure LWTimerRadioGroupClick(Sender: TObject);
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procedure LWSpinEditChange(Sender: TObject);
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procedure LWTimerTimer(Sender: TObject);
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procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
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procedure FormKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
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procedure LWExitClick(Sender: TObject);
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procedure LWCoolTrayIconDblClick(Sender: TObject);
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procedure LWCoolTrayIconStartup(Sender: TObject; var ShowMainForm: Boolean);
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procedure LWThreadTimerTimer(Sender: TObject);
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procedure LWSpinEditWaitTimeChange(Sender: TObject);
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procedure LWButtonStartStopClick(Sender: TObject);
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procedure LWButtonAboutClick(Sender: TObject);
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private
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MyCtx: pCtx;
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FrameBitmap: TBitmap;
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SessionEnding: Boolean;
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LWMainFormHidden: Boolean;
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FintLockedCount: Integer;
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FrameHeight, FrameWidth: Double;
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procedure StartCapture;
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procedure StopCapture;
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procedure UpdateGetImage;
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procedure OnIdle(Sender: TObject; var Done: Boolean);
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procedure WMQueryEndSession(var Message: TMessage); message WM_QUERYENDSESSION;
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procedure NoFaceRedraw(var mes : TMessage); message WM_NOFACE;
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procedure NoCameraRedraw(var mes : TMessage); message WM_NOCAMERA;
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procedure WMPaint(var Message: TWMPaint); message WM_PAINT;
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procedure DetectAndDraw(const Ctx: pCtx);
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procedure WndProc(var Message: TMessage); override;
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procedure AddImageFromResourceToPaintBox(ResID: Integer);
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function ShowMessageDlgEx(const AText, ACaption: string; const ResID: Integer; Style: Cardinal = MB_OK): Cardinal; overload;
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function ShowMessageDlgEx(const AText, ACaption: string; const ResName: pChar; Style: Cardinal = MB_OK): Cardinal; overload;
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public
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end;
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var
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MainForm: TMainForm;
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HaarCascade: pCvHaarClassifierCascade = nil;
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Cascade_Name: AnsiString = 'FaceDetectXML\haarcascade_frontalface_alt.xml';
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// WTSRegisterSessionNotification
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// http://msdn.microsoft.com/en-us/library/aa383828%28VS.85%29.aspx
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// http://msdn.microsoft.com/en-us/library/aa383841%28VS.85%29.aspx
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function WTSRegisterSessionNotification(hWnd: HWND; dwFlags: DWORD): BOOL; stdcall;
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function WTSUnRegisterSessionNotification(hWND: HWND): BOOL; stdcall;
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const
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ProgramsName = 'FaceDetect and LockWorkstation';
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ProgramsVer = '1.0';
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// WTSRegisterSessionNotification
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NOTIFY_FOR_ALL_SESSIONS = 1;
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NOTIFY_FOR_THIS_SESSIONS = 0;
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// Res images type
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NOFACE = 1;
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NOCAMERA = 2;
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implementation
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procedure BlockInput(ABlockInput: boolean); stdcall; external 'USER32.DLL';
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// WTSRegisterSessionNotification
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function WTSRegisterSessionNotification; external 'wtsapi32.dll' Name 'WTSRegisterSessionNotification';
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function WTSUnRegisterSessionNotification; external 'wtsapi32.dll' Name 'WTSUnRegisterSessionNotification';
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{$R *.dfm}
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procedure TMainForm.WndProc(var Message: TMessage);
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begin
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case Message.Msg of
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WM_WTSSESSION_CHANGE:
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begin
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if Message.wParam = WTS_SESSION_LOCK then
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begin
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Inc(FintLockedCount);
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StopCapture;
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AddImageFromResourceToPaintBox(NOFACE);
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end;
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if Message.wParam = WTS_SESSION_UNLOCK then
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begin
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LWLTotalPCLock.Caption := 'The computer was locked ' + IntToStr(FintLockedCount) + ' times.';
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StartCapture;
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end;
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end;
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end;
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inherited;
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end;
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procedure TMainForm.WMQueryEndSession(var Message: TMessage);
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begin
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SessionEnding := True;
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Message.Result := 1;
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end;
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procedure TMainForm.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
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begin
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CanClose := ((LWMainFormHidden) or SessionEnding);
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if not CanClose then
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begin
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LWCoolTrayIcon.HideMainForm;
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LWMainFormHidden := True;
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LWPopupMenu.Items[0].Caption := 'Show';
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end;
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end;
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procedure TMainForm.FormKeyDown(Sender: TObject; var Key: Word;
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Shift: TShiftState);
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begin
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if Key = VK_ESCAPE then
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begin
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LWCoolTrayIcon.HideMainForm;
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LWMainFormHidden := True;
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LWPopupMenu.Items[0].Caption := 'Show';
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end;
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end;
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procedure TMainForm.FormCreate(Sender: TObject);
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begin
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Caption := ProgramsName;
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// WTSRegisterSessionNotification
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WTSRegisterSessionNotification(Handle, NOTIFY_FOR_ALL_SESSIONS);
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FintLockedCount := 0;
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// End
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LWCoolTrayIcon.Hint := ProgramsName;
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LWCoolTrayIcon.IconIndex := 1;
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LWThreadTimer.Interval := LWSpinEditWaitTime.Value*1000;
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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StartCapture;
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end;
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procedure TMainForm.FormDestroy(Sender: TObject);
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begin
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StopCapture;
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end;
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{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> }
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procedure TMainForm.StartCapture;
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begin
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if not Assigned(MyCtx) then
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begin
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MyCtx := nil;
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MyCtx := AllocMem(SizeOf(TCtx));
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try
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MyCtx.MyCapture := cvCreateCameraCapture(CV_CAP_ANY);
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except
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on E: Exception do
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begin
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ShowMessage('Exception in procedure StartCapture.' + #13 + E.ClassName + ': '+ E.Message);
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MyCtx := nil;
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FreeMem(MyCtx, SizeOf(TCtx));
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AddImageFromResourceToPaintBox(NOCAMERA);
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Exit;
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end;
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end;
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
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FrameWidth := cvGetCaptureProperty(MyCtx.MyCapture, CV_CAP_PROP_FRAME_WIDTH);
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FrameHeight := cvGetCaptureProperty(MyCtx.MyCapture, CV_CAP_PROP_FRAME_HEIGHT);
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//cvSetCaptureProperty(Ctx.MyCapture, CV_CAP_PROP_FRAME_WIDTH, VideoCamWidth);
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//cvSetCaptureProperty(Ctx.MyCapture, CV_CAP_PROP_FRAME_HEIGHT, VideoCamHeight);
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// Load the HaarClassifierCascade
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HaarCascade := cvLoad(pCVChar(@cascade_name[1]), 0, 0, 0);
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// Check whether the cascade has loaded successfully. Else report and error and quit
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if not Assigned(HaarCascade) then
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begin
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ShowMessage('ERROR: Could not load haar classifier cascade.');
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LWExitClick(LWExit);
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end;
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// Allocate the memory storage
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MyCtx.MyStorage := cvCreateMemStorage(0);
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if Assigned(MyCtx.MyCapture) then
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begin
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LWButtonStartStop.Caption := 'Stop face detect';
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LWTimerRadioGroup.Enabled := True;
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LWSpinEditWaitTime.Enabled := True;
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LWStopLockTimer.Enabled := True;
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LWLWaitTime.Enabled := True;
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LWLWaitTimeMS.Enabled := True;
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LWSpinEdit.Enabled := LWTimerRadioGroup.ItemIndex = 1;
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LWLTimerMS.Enabled := LWTimerRadioGroup.ItemIndex = 1;
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FrameBitmap := TBitmap.Create;
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FrameBitmap.PixelFormat := pf24bit;
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UpdateGetImage;
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end
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else
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begin
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MyCtx := nil;
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FreeMem(MyCtx, SizeOf(TCtx));
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AddImageFromResourceToPaintBox(NOCAMERA);
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Exit;
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end;
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end;
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end;
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{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> }
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procedure TMainForm.StopCapture;
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begin
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try
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if Assigned(MyCtx) then
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begin
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LWTimer.Enabled := False;
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LWThreadTimer.Enabled := False;
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LWTimerRadioGroup.Enabled := False;
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LWSpinEdit.Enabled := False;
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LWLTimerMS.Enabled := False;
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LWSpinEditWaitTime.Enabled := False;
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LWStopLockTimer.Enabled := False;
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LWLWaitTime.Enabled := False;
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LWLWaitTimeMS.Enabled := False;
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Application.OnIdle := nil;
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if Assigned(MyCtx.MyCapture) then
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cvReleaseCapture(MyCtx.MyCapture);
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if Assigned(FrameBitmap) then
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FrameBitmap.Free;
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MyCtx := nil;
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FreeMem(MyCtx, SizeOf(TCtx));
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LWButtonStartStop.Caption := 'Start face detect';
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end;
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except
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on E: Exception do
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ShowMessage('Exception in procedure StopCapture.' + #13 + E.ClassName + ': '+ E.Message);
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end;
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end;
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procedure TMainForm.LWButtonAboutClick(Sender: TObject);
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begin
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ShowMessageDlgEx(ProgramsName+#13+'Version: '+ProgramsVer+#13+'Copyright <20> 2013 by Mikhail Grigorev'+#13+'www.im-history.ru'+#13+'sleuthhound@gmail.com', ProgramsName+' - About', 'ABOUT');
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end;
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{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>\<5C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> }
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procedure TMainForm.LWButtonStartStopClick(Sender: TObject);
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begin
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if Assigned(MyCtx) then
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begin
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StopCapture;
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AddImageFromResourceToPaintBox(NOFACE);
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end
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else
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StartCapture;
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end;
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{ <20><><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD> }
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procedure TMainForm.LWCoolTrayIconDblClick(Sender: TObject);
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begin
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if LWMainFormHidden then
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begin
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LWCoolTrayIcon.ShowMainForm;
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LWMainFormHidden := False;
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LWPopupMenu.Items[0].Caption := 'Hide';
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end
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else
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begin
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Application.Minimize;
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LWCoolTrayIcon.HideMainForm;
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LWMainFormHidden := True;
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LWPopupMenu.Items[0].Caption := 'Show';
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end;
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end;
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procedure TMainForm.LWCoolTrayIconStartup(Sender: TObject; var ShowMainForm: Boolean);
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begin
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ShowMainForm := False;
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LWMainFormHidden := True;
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end;
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{ <20><><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
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procedure TMainForm.LWExitClick(Sender: TObject);
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begin
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LWMainFormHidden := True;
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Close;
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end;
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procedure TMainForm.OnIdle(Sender: TObject; var Done: Boolean);
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begin
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MyCtx.MyInputImage := cvQueryFrame(MyCtx.MyCapture);
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if Assigned(MyCtx.MyInputImage) then
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begin
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DetectAndDraw(MyCtx);
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if LWStopLockTimer.Checked then
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begin
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if MyCtx.TotalFaceDetect = 0 then
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LWThreadTimer.Enabled := True
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else
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LWThreadTimer.Enabled := False;
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end
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else
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LWThreadTimer.Enabled := True;
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LWCoolTrayIcon.Hint := Format('%s (Total face: %s)', [ProgramsName, IntToStr(MyCtx.TotalFaceDetect)]);
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LTotalFace.Caption := IntToStr(MyCtx.TotalFaceDetect);
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if not LWMainFormHidden then
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begin
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IplImage2Bitmap(MyCtx.MyInputImage, FrameBitmap);
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LWFrameOutput.Canvas.StretchDraw(LWFrameOutput.ClientRect, FrameBitmap);
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end;
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Done := False;
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end
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else
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begin
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Application.OnIdle := nil;
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LWThreadTimer.Enabled := False;
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end;
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end;
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procedure TMainForm.LWThreadTimerTimer(Sender: TObject);
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begin
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if MyCtx.TotalFaceDetect = 0 then
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LockWorkStation();
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{ BlockInput(True) // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> (<28><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD>)
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else
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BlockInput(False); // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> (<28><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD>)
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}
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end;
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procedure TMainForm.LWTimerRadioGroupClick(Sender: TObject);
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begin
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if Assigned(MyCtx) then
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begin
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UpdateGetImage;
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LWSpinEdit.Enabled := LWTimerRadioGroup.ItemIndex = 1;
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LWLTimerMS.Enabled := LWTimerRadioGroup.ItemIndex = 1;
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end;
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end;
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procedure TMainForm.LWSpinEditChange(Sender: TObject);
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begin
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LWTimer.Interval := LWSpinEdit.Value;
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end;
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procedure TMainForm.LWSpinEditWaitTimeChange(Sender: TObject);
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begin
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LWThreadTimer.Enabled := False;
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LWThreadTimer.Interval := LWSpinEditWaitTime.Value*1000;
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LWThreadTimer.Enabled := True;
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end;
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procedure TMainForm.LWTimerTimer(Sender: TObject);
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var
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Done: Boolean;
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begin
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OnIdle(nil, Done);
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end;
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procedure TMainForm.UpdateGetImage;
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begin
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if Assigned(MyCtx.MyCapture) then
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case LWTimerRadioGroup.ItemIndex of
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0:
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begin
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LWTimer.Enabled := False;
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Application.OnIdle := OnIdle;
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end;
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1:
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begin
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Application.OnIdle := nil;
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LWTimer.Enabled := True;
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end;
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end;
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end;
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procedure TMainForm.DetectAndDraw(const Ctx: pCtx);
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var
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Scale: Integer;
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Temp: pIplImage;
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Pt1, Pt2: TCvPoint;
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I: Integer;
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Faces: pCvSeq;
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R: pCvRect;
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begin
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Scale := 1;
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Temp := cvCreateImage(cvSize(Ctx.MyInputImage^.width div Scale, Ctx.MyInputImage^.height div Scale), 8, 3);
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cvClearMemStorage(Ctx.MyStorage);
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if Assigned(HaarCascade) then
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begin
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Faces := cvHaarDetectObjects(Ctx.MyInputImage, HaarCascade, Ctx.MyStorage, 1.1, 2, CV_HAAR_DO_CANNY_PRUNING, cvSize(40, 40), cvSize(0, 0));
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Ctx.TotalFaceDetect := Faces^.total;
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for I := 1 to Faces^.total do
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begin
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R := pCvRect(cvGetSeqElem(Faces, I));
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Pt1.x := R^.x * Scale;
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Pt2.x := (R^.x + R^.width) * Scale;
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Pt1.y := R^.y * Scale;
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Pt2.y := (R^.y + R^.height) * Scale;
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cvRectangle(Ctx.MyInputImage, Pt1, Pt2, CV_RGB(255, 0, 0), 3, 8, 0);
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end;
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end;
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cvReleaseImage(Temp);
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end;
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{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> Resource <20> PaintBox }
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procedure TMainForm.AddImageFromResourceToPaintBox(ResID: Integer);
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var
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Bitmap: TBitmap;
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begin
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Bitmap := TBitmap.Create;
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try
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if ResID = NOFACE then
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Bitmap.LoadFromResourceName(HInstance, 'NOFACE')
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else if ResID = NOCAMERA then
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Bitmap.LoadFromResourceName(HInstance, 'NOCAMERA');
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LWFrameOutput.Canvas.StretchDraw(LWFrameOutput.ClientRect, Bitmap);
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LWFrameOutput.Tag := ResID;
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finally
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Bitmap.Free;
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end;
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end;
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procedure TMainForm.WMPaint(var Message: TWMPaint);
|
||
var
|
||
PS: TPaintStruct;
|
||
begin
|
||
BeginPaint(Handle, PS);
|
||
if not LWMainFormHidden then
|
||
begin
|
||
if LWFrameOutput.Tag = NOFACE then
|
||
PostMessage(Handle, WM_NOFACE, 0, 0)
|
||
else if LWFrameOutput.Tag = NOCAMERA then
|
||
PostMessage(Handle, WM_NOCAMERA, 0, 0);
|
||
end;
|
||
EndPaint(Handle, PS);
|
||
end;
|
||
|
||
procedure TMainForm.NoFaceRedraw(var Mes: TMessage);
|
||
begin
|
||
AddImageFromResourceToPaintBox(NOFACE);
|
||
end;
|
||
|
||
procedure TMainForm.NoCameraRedraw(var Mes: TMessage);
|
||
begin
|
||
AddImageFromResourceToPaintBox(NOCAMERA);
|
||
end;
|
||
|
||
{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> }
|
||
function TMainForm.ShowMessageDlgEx(const AText, ACaption: string; const ResID: Integer; Style: Cardinal = MB_OK): Cardinal;
|
||
var
|
||
lpMsgBoxParams : MsgBoxParams;
|
||
begin
|
||
with lpMsgBoxParams do
|
||
begin
|
||
cbSize := SizeOf(lpMsgBoxParams);
|
||
hwndOwner := Application.Handle;
|
||
hInstance := SysInit.hInstance;
|
||
lpszText := PChar(AText);
|
||
lpszCaption := PChar(ACaption);
|
||
dwStyle := MB_USERICON or MB_TOPMOST or Style;
|
||
lpszIcon := MAKEINTRESOURCE(ResID);
|
||
dwContextHelpID := 0;
|
||
lpfnMsgBoxCallback := nil;
|
||
dwLanguageId := LANG_ENGLISH;
|
||
end;
|
||
Result := Cardinal(MessageBoxIndirect(lpMsgBoxParams));
|
||
end;
|
||
|
||
{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> }
|
||
function TMainForm.ShowMessageDlgEx(const AText, ACaption: string; const ResName: pChar; Style: Cardinal = MB_OK): Cardinal;
|
||
var
|
||
lpMsgBoxParams : MsgBoxParams;
|
||
begin
|
||
with lpMsgBoxParams do
|
||
begin
|
||
cbSize := SizeOf(lpMsgBoxParams);
|
||
hwndOwner := Application.Handle;
|
||
hInstance := SysInit.hInstance;
|
||
lpszText := PChar(AText);
|
||
lpszCaption := PChar(ACaption);
|
||
dwStyle := MB_USERICON or MB_TOPMOST or Style;
|
||
lpszIcon := ResName;
|
||
dwContextHelpID := 0;
|
||
lpfnMsgBoxCallback := nil;
|
||
dwLanguageId := LANG_ENGLISH;
|
||
end;
|
||
Result := Cardinal(MessageBoxIndirect(lpMsgBoxParams));
|
||
end;
|
||
|
||
end.
|