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#ifndef __JE_BITMAP_H__
#define __JE_BITMAP_H__
#include "../core/configuration.h"
#if defined(jin_graphics)

#include <functional>

#include "../common/types.h"
#include "../math/vector2.hpp"

#include "color.h"

namespace JinEngine
{
	namespace Graphics
	{

		/// 
		/// A RGBA32 bitmap.
		/// 
		/// A bitmap keeps pixels and can't draw directly onto screen. To render bitmap, a texture is required. A
		/// texture is a renderable hard ware side structure which could be handled with GPU. For instance, opengl
		/// create texture and store it in GPU memory for rendering them onto hdc.
		/// 
		class Bitmap : public Object
		{
		public:
			/// 
			/// Constructor of bitmap.
			/// 
			Bitmap();

			/// 
			/// Constructor of bitmap.  
			/// 
			/// @param width Width of bitmap.
			/// @param height Height of bitmap.
			/// 
			Bitmap(unsigned w, unsigned h);

			Bitmap(const char* path);

			Bitmap(const void* pixels, unsigned w, unsigned h);

			Bitmap(const void* imgData, size_t size);

			Bitmap(int w, int h, Color color);

			Bitmap(int w, int h, std::function<Color(int, int, int, int)> drawer);

			Bitmap(const Bitmap* bitmap);

			/// 
			/// Destructor of bitmap
			/// 
			virtual ~Bitmap();

			/// 
			/// Create bitmap with another one. 
			/// 
			/// @param bitmap Bitmap be cloned.
			/// @return Return bitmap pointer if created, otherwise return null.
			/// 
			Bitmap* clone();

			/// 
			/// Directly bind pixels with given pixels data
			/// 
			/// @param pixels Pixels to be binded. 
			/// @param width Width of bitmap 
			/// @param height Height of bitmap 
			/// 
			void bind(Color* pixels, int width, int height);

			/// 
			/// Reset pixel data with given pixels data. 
			/// 
			/// @param pixels Pixels to be set.
			/// @param width Width of bitmap 
			/// @param height Height of bitmap 
			/// 
			void resetPixels(const Color* pixels, int width, int height);

			/// 
			/// Reset pixel data with given color. 
			/// 
			/// @param color Color to be set.
			/// @param width Width of bitmap 
			/// @param height Height of bitmap 
			///
			void resetPixels(const Color& color, int width, int height);

			/// 
			/// Set pixel with given color.
			/// 
			/// @param color Color to be set. 
			/// @param x X value of pixel.
			/// @param y Y value of pixel.
			/// 
			void setPixel(const Color& color, int x, int y);

			/// 
			/// Set pixels with given color. 
			/// 
			/// @param color Color to be set.
			/// 
			void setPixels(Color color);

			/// 
			/// Set pixels with given color data.
			/// 
			/// @param colors New pixels' colors.
			/// @param count Number of pixels.
			/// 
			void setPixels(Color* colors, int count);

			/// 
			/// Get pixel in given position.
			/// 
			/// @param x X value of position. 
			/// @param y Y value of position.
			/// 
			Color getPixel(int x, int y);

			/// 
			/// Get pixels. 
			/// @return Colors of the bitmap.
			/// 
			const Color* getPixels() const;

			/// 
			/// Get bitmap width.
			/// 
			/// @return Width of bitmap.
			/// 
			inline int getWidth() const { return width; }

			/// 
			/// Get bitmap height.
			/// 
			/// @return Height of bitmap.
			/// 
			inline int getHeight() const { return height; }

			/// 
			/// Get bitmap size.
			/// 
			/// @return Size of bitmap.
			/// 
			inline Math::Vector2<int> getSize() const { return Math::Vector2<int>(width, height); }

		protected:
			Color * pixels;
			unsigned width, height;

		};

	} // namespace Graphics
} // namespace JinEngine

#endif

#endif