drawtext.c File Reference

Draw text on an image. More...

#include "drawtext.h"

Go to the source code of this file.

Data Structures
struct	fontinfo
	Font info. More...

Functions
static void	PutPixel (unsigned char *Image, int Width, int Height, int x, int y, unsigned char Value)
	Draw a pixel on an image.
static void	DrawGlyph (unsigned char *Image, int Width, int Height, const unsigned char *Glyph, int GlyphWidth, int GlyphHeight, int x0, int y0, unsigned Value)
	Draw a packed binary glyph on an image. More...
int	TextWidth (const char *Text)
	Compute the width of text in pixels.
void	DrawText (unsigned char *Image, int Width, int Height, int x0, int y0, unsigned char Value, const char *Text)
	Draw text on an image. More...

Variables
static struct fontinfo	FontInfo []
static unsigned char	FontBitmapData []
	Font bitmap data.

Detailed Description

Draw text on an image.

Author

Pascal Getreuer getre.nosp@m.uer@.nosp@m.gmail.nosp@m..com

This file contains a simple implementation for drawing text onto an image. Data for one 18-point sans serif font is included.

Copyright (c) 2012, Pascal Getreuer All rights reserved.

This program is free software: you can redistribute it and/or modify it under, at your option, the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version, or the terms of the simplified BSD license.

You should have received a copy of these licenses along with this program. If not, see http://www.gnu.org/licenses/ and http://www.opensource.org/licenses/bsd-license.html.

Definition in file drawtext.c.

Function Documentation

static void DrawGlyph ( unsigned char *  Image, int  Width, int  Height, const unsigned char *  Glyph, int  GlyphWidth, int  GlyphHeight, int  x0, int  y0, unsigned  Value  )

static

Draw a packed binary glyph on an image.

Parameters

Image	the destination image
Width,Height	the image dimensions
Glyph	the packed binary glyph data
GlyphWidth,GlyphHeight	the glyph dimensions in pixels
x0,y0	the upper-left corner of the glyph
Value	the grayscale value of the drawn glyph

Definition at line 231 of file drawtext.c.

void DrawText	(	unsigned char *	Image,
		int	Width,
		int	Height,
		int	x0,
		int	y0,
		unsigned char	Value,
		const char *	Text
	)

Draw text on an image.

Parameters

Image	the destination image
Width,Height	the image dimensions
x0,y0	the upper-left corner of the text
Value	the grayscale value of the drawn text
Text	the text to be drawn

Definition at line 291 of file drawtext.c.