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PixelCanvas.h
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PixelCanvas.h
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// Copyright 2014
// erkki.salonen@tpnet.fi
// ville.kankainen@gmail.com
// ville.kankainen@kangain.com
//
// Licensed under the Apache License, Version 2.0 (the License);
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an AS IS BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef PIXELCANVAS_H_
#define PIXELCANVAS_H_
#include "Bitmap.h"
namespace Gain {
class PixelCanvas:
public Gain::Bitmap
{
private:
typedef Gain::Bitmap super;
public:
/**
* Create PixelCanvas to specified location on screen.
*
*
* \param x x-coordinate of canvas start corner.
* \param y y-coordinate of canvas start corner.
* \param width the width of canvas.
* \param height the height of canvas.
*/
PixelCanvas(int x, int y, int width, int height);
/**
* Create PixelCanvas with certain width and height
**
* \param width the width of canvas.
* \param height the height of canvas.
*/
PixelCanvas(int width, int height);
virtual ~PixelCanvas();
/**
* Set pixel color and alpha values to specified coordinate.
**
* \param x x-coordinate of pixel.
* \param y y-coordinate of pixel.
* \param alpha alpha value of pixel.
* \param blue blue component (RGB) of pixel.
* \param green green component of pixel.
* \param red red component of pixel.
*/
void setPixel(int x, int y, char alpha,char blue,char green,char red);
/**
* Set pixel color and alpha values to specified coordinate.
**
* \param x x-coordinate of pixel.
* \param y y-coordinate of pixel.
* \param abgr 32-bit combined value of pixel where alpha resides in most significant byte.
*/
void setPixel(int x, int y, unsigned int abgr);
/**
* Get pixel color and alpha values from specified coordinate.
**
* \param x x-coordinate of pixel.
* \param y y-coorindate of pixel.
* \param *alpha alpha value of checked pixel.
* \param *blue blue component (RGB) of checked pixel.
* \param *green green component of checked pixel.
* \param *red red component of checked pixel.
*/
void getPixel(int x, int y, char *alpha,char *blue,char *green,char *red);
/**
* Get pixel color and alpha values from specified coordinate.
**
* \param x x-coordinate of pixel.
* \param y y-coorindate of pixel.
* \param *abgr 32-bit combined value of pixel where alpha resides in most significant byte.
*/
void getPixel(int x, int y, unsigned int *abgr);
/**
* Canvas render function. This is called by Gain framework.
**
* \param sec elapsed time since start.
* \param deltaSec elapsed time last update.
*
*/
virtual void updateG(float sec,float deltaSec);
/**
* Clear Canvas
**
*/
virtual void clear();
protected:
virtual bool initVariables();
virtual void enableAttributes() const;
virtual void disableAttributes() const;
unsigned int pMaxPixelBufferSize;
};
} /* namespace Gain */
#endif /* PIXELCANVAS_H_ */