mirror of
https://github.com/Laex/Delphi-OpenCV.git
synced 2024-11-16 16:25:53 +01:00
117 lines
3.2 KiB
ObjectPascal
117 lines
3.2 KiB
ObjectPascal
// ****************************************************************
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// Delphi-OpenCV Demo
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// Copyright (C) 2013 Project Delphi-OpenCV
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// ****************************************************************
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// Contributor:
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// Laentir Valetov
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// email:laex@bk.ru
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// ****************************************************************
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// You may retrieve the latest version of this file at the GitHub,
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// located at git://github.com/Laex/Delphi-OpenCV.git
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// ****************************************************************
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// The contents of this file are used with permission, subject to
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// the Mozilla Public License Version 1.1 (the "License"); you may
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// not use this file except in compliance with the License. You may
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// obtain a copy of the License at
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// http://www.mozilla.org/MPL/MPL-1_1Final.html
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//
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// Software distributed under the License is distributed on an
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// "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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// implied. See the License for the specific language governing
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// rights and limitations under the License.
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// ****************************************************************
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unit uOCVView;
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interface
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uses
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WinApi.Windows,
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WinApi.Messages,
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System.SysUtils,
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System.Classes,
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Vcl.Controls,
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uOCVTypes,
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core.types_c;
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type
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TocvView = class(TWinControl, IocvDataReceiver)
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private
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FocvVideoSource: IocvDataSource;
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FOnAfterPaint: TOnOcvNotify;
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FOnBeforePaint: TOnOcvNotify;
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procedure WMEraseBkgnd(var Message: TWMEraseBkgnd); message WM_ERASEBKGND;
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procedure WMPaint(var Message: TWMPaint); message WM_PAINT;
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procedure SetOpenCVVideoSource(const Value: IocvDataSource);
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protected
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procedure TakeImage(const IplImage: IocvImage);
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procedure SetVideoSource(const Value: TObject);
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public
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destructor Destroy; override;
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published
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property VideoSource: IocvDataSource Read FocvVideoSource write SetOpenCVVideoSource;
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property Align;
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property OnAfterPaint: TOnOcvNotify read FOnAfterPaint write FOnAfterPaint;
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property OnBeforePaint: TOnOcvNotify read FOnBeforePaint write FOnBeforePaint;
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end;
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implementation
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Uses
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cvUtils;
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{TOpenCVView}
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destructor TocvView.Destroy;
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begin
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if Assigned(FocvVideoSource) then
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FocvVideoSource.RemoveReceiver(Self);
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inherited;
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end;
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procedure TocvView.SetOpenCVVideoSource(const Value: IocvDataSource);
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begin
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if FocvVideoSource <> Value then
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begin
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if Assigned(FocvVideoSource) then
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FocvVideoSource.RemoveReceiver(Self);
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FocvVideoSource := Value;
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if Assigned(FocvVideoSource) then
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FocvVideoSource.AddReceiver(Self);
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end;
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end;
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procedure TocvView.SetVideoSource(const Value: TObject);
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begin
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VideoSource := Value as TocvDataSource;
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end;
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procedure TocvView.TakeImage(const IplImage: IocvImage);
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begin
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if not(csDestroying in ComponentState) then
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begin
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if Assigned(OnBeforePaint) then
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OnBeforePaint(Self, IplImage);
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ipDraw(GetDC(Handle), IplImage.IpImage, ClientRect);
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if Assigned(OnAfterPaint) then
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OnAfterPaint(Self, IplImage);
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end;
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end;
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procedure TocvView.WMEraseBkgnd(var Message: TWMEraseBkgnd);
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begin
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if (csDesigning in ComponentState) then
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inherited;
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end;
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procedure TocvView.WMPaint(var Message: TWMPaint);
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begin
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if (csDesigning in ComponentState) then
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inherited
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else
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DefaultHandler(Message);
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end;
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end.
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