Font and text drawing routines.

#include "stddef.h"
#include "assert.h"
#include "gfx_mono.h"
#include "gfx_mono_text.h"
#include <asf.h>

Macros
#define	CONFIG_FONT_PIXELS_PER_BYTE 8

#define	EXTMEM_BUF_SIZE 20

Functions
void	gfx_mono_draw_char (const char c, const gfx_coord_t x, const gfx_coord_t y, const struct font *font)
	Draws a character to the display. More...

static void	gfx_mono_draw_char_hugemem (const char ch, const gfx_coord_t x, const gfx_coord_t y, const struct font *font)
	Helper function that draws a character from a font in hugemem to the display. More...

static void	gfx_mono_draw_char_progmem (const char ch, const gfx_coord_t x, const gfx_coord_t y, const struct font *font)
	Helper function that draws a character from a font in progmem to the display. More...

void	gfx_mono_draw_progmem_string (char PROGMEM_PTR_T str, gfx_coord_t x, gfx_coord_t y, const struct font *font)
	Draws a string located in program memory to the display. More...

void	gfx_mono_draw_string (const char str, gfx_coord_t x, gfx_coord_t y, const struct font font)
	Draws a string to the display. More...

void	gfx_mono_get_progmem_string_bounding_box (char PROGMEM_PTR_T str, const struct font font, gfx_coord_t width, gfx_coord_t *height)
	Computes the bounding box of a string located in program memory. More...

void	gfx_mono_get_string_bounding_box (const char str, const struct font font, gfx_coord_t width, gfx_coord_t height)
	Computes the bounding box of a string. More...

#define CONFIG_FONT_PIXELS_PER_BYTE 8

Referenced by gfx_mono_draw_char_hugemem(), and gfx_mono_draw_char_progmem().

#define EXTMEM_BUF_SIZE 20

Referenced by gfx_mono_draw_char_hugemem().

static void gfx_mono_draw_char_hugemem	(	const char	ch,
		const gfx_coord_t	x,
		const gfx_coord_t	y,
		const struct font *	font
	)

static

Helper function that draws a character from a font in hugemem to the display.

This function will first calculate the start offset in the font character data before iterating over the specific character data.

Only pixels in the character that should be enabled are done so, the caller is required to prepare the drawing area before printing a character to it. This is done by the gfx_mono_draw_string() and gfx_mono_draw_progmem_string() functions.

Parameters

[in]	ch	Character to be drawn
[in]	x	X coordinate on screen.
[in]	y	Y coordinate on screen.
[in]	font	Font to draw character in

References Assert, CONFIG_FONT_PIXELS_PER_BYTE, font::data, EXTMEM_BUF_SIZE, font::first_char, gfx_mono_draw_pixel, GFX_PIXEL_SET, font::height, and font::width.

Referenced by gfx_mono_draw_char().

static void gfx_mono_draw_char_progmem	(	const char	ch,
		const gfx_coord_t	x,
		const gfx_coord_t	y,
		const struct font *	font
	)

static

Helper function that draws a character from a font in progmem to the display.

This function will first calculate the start offset in the font character data before iterating over the specific character data.

Only pixels in the character that should be enabled are done so, the caller is required to prepare the drawing area before printing a character to it. This is done by the gfx_mono_draw_string() and gfx_mono_draw_progmem_string() functions.

Parameters

[in]	ch	Character to be drawn
[in]	x	X coordinate on screen.
[in]	y	Y coordinate on screen.
[in]	font	Font to draw character in

References Assert, CONFIG_FONT_PIXELS_PER_BYTE, font::data, font::first_char, gfx_mono_draw_pixel, GFX_PIXEL_SET, font::height, font::progmem, PROGMEM_PTR_T, PROGMEM_READ_BYTE, and font::width.

Referenced by gfx_mono_draw_char().

Microchip® Advanced Software Framework

Macros

Functions