bitmap.c File Reference

Bitmap manipulation routines. More...

#include "gfx.h"
#include "gfx_p.h"
#include "cfg/cfg_gfx.h"
#include <cfg/macros.h>
#include <cfg/debug.h>
#include <cpu/attr.h>
#include <string.h>

Go to the source code of this file.

Functions
void	gfx_bitmapInit (Bitmap *bm, uint8_t *raster, coord_t w, coord_t h)
	Initialize a Bitmap structure with the provided parameters.
void	gfx_bitmapClear (Bitmap *bm)
	Clear the whole bitmap surface to the background color.
void	gfx_blit (Bitmap *dst, const Rect *rect, const Bitmap *src, coord_t srcx, coord_t srcy)
	Copy a rectangular area of a bitmap on another bitmap.
void	gfx_blitRaster (Bitmap *dst, coord_t dxmin, coord_t dymin, const uint8_t *raster, coord_t w, coord_t h, coord_t stride)
	Blit a raster to a Bitmap.
void	gfx_blitImage (Bitmap *dst, coord_t dxmin, coord_t dymin, const Image *image)
	Blit an Image to a Bitmap.

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Detailed Description

Bitmap manipulation routines.

Author:

Bernie Innocenti <bernie@codewiz.org>

Stefano Fedrigo <aleph@develer.com>

See also:

gfx.h

Definition in file bitmap.c.

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Function Documentation

void gfx_bitmapClear

(

Bitmap *

bm

)

Clear the whole bitmap surface to the background color.

Note:

This function does not update the current pen position.

This function bypasses the current clipping area.

Definition at line 97 of file bitmap.c.

void gfx_bitmapInit	(	Bitmap *	bm,
		uint8_t *	raster,
		coord_t	w,
		coord_t	h
	)

Initialize a Bitmap structure with the provided parameters.

Note:

The pen position is reset to the origin.

Definition at line 62 of file bitmap.c.

void gfx_blit	(	Bitmap *	dst,
		const Rect *	rect,
		const Bitmap *	src,
		coord_t	srcx,
		coord_t	srcy
	)

Copy a rectangular area of a bitmap on another bitmap.

Blitting is a common copy operation involving two bitmaps. A rectangular area of the source bitmap is copied bit-wise to a different position in the destination bitmap.

Note:

Using the same bitmap for src and dst is unsupported.

Parameters:

	dst	Bitmap where the operation writes.
	rect	The (xmin;ymin) coordinates provide the top/left offset for drawing in the destination bitmap. If the source bitmap is larger than the rectangle, drawing is clipped.
	src	Bitmap containing the source pixels.
	srcx	Starting X offset in the source bitmap.
	srcy	Starting Y offset in the source bitmap.

Definition at line 164 of file bitmap.c.

void gfx_blitImage	(	Bitmap *	dst,
		coord_t	dxmin,
		coord_t	dymin,
		const Image *	image
	)

Blit an Image to a Bitmap.

See also:

gfx_blit()

Definition at line 222 of file bitmap.c.

void gfx_blitRaster	(	Bitmap *	dst,
		coord_t	dxmin,
		coord_t	dymin,
		const uint8_t *	raster,
		coord_t	w,
		coord_t	h,
		coord_t	stride
	)

Blit a raster to a Bitmap.

See also:

gfx_blit()

Definition at line 197 of file bitmap.c.