rectstretch.h

来自「barcode readers [ from Image]」· C头文件 代码 · 共 82 行

//
// RectStretch
//   Stretches a rectangle in the input image into a new image of
//   a specified size. The output size must be larger than the
//   input. Bilinear interpolation is used.
//
// Copyright (C) 2006 by Jon A. Webb (Contact via GMail; username is jonawebb)
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// 
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
// 
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//


#ifndef RectStretch_h
#define RectStretch_h

#include "Image.h"
#include "ImageSize.h"
#include "PipelineStage.h"

#include <e32cons.h>
#include <e32std.h>


namespace Algorithm
{

	class CRectStretch :
		public Core::MPipelineStage
	{
		// Lifecycle
	public:
		IMPORT_C static CRectStretch* NewL(
			TRect inputRect,
			TSize outputSize);
		~CRectStretch(void);
	private:
		CRectStretch(
			TRect inputRect,
			TSize outputSize);

		void ConstructL();

		///////////////////// Overrides ////////////////////////
		//
		// Overrides from MPipelineStage:
		//
			// Operations
		public:
			Core::CImage FrontL();
			void PushL(Core::CImage);

			// Accessors
		public:
			bool Empty() const;
		//
		//
		/////////////////// End of overrides ///////////////////

	private:
		// Attributes
		bool ibEmpty;				// if true no output is ready
		Core::CImage iImage;		// the output image
		TRect iRect;				// input rectangle
		TSize iSize;				// output image size
	};

};

#endif // RectStretch_h