font_diskfont.c File Reference

#include "amiga/os3support.h"
#include <stdlib.h>
#include <string.h>
#include <proto/diskfont.h>
#include <proto/exec.h>
#include <proto/graphics.h>
#include <proto/utility.h>
#include <graphics/rpattr.h>
#include "utils/log.h"
#include "utils/utf8.h"
#include "utils/nsoption.h"
#include "amiga/font.h"
#include "amiga/font_diskfont.h"
#include "amiga/gui.h"
#include "amiga/plotters.h"
#include "amiga/utf8.h"

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Macros
#define	MAX_FONT_NAME_SIZE   33

Functions
static struct TextFont *	ami_font_bm_open (struct RastPort *rp, const plot_font_style_t *fstyle)
static size_t	ami_font_bm_convert_local_to_utf8_offset (const char *utf8string, size_t length, UWORD offset)
static nserror	amiga_bm_nsfont_width (const plot_font_style_t *fstyle, const char *string, size_t length, int *width)
static nserror	amiga_bm_nsfont_position_in_string (const plot_font_style_t *fstyle, const char *string, size_t length, int x, size_t *char_offset, int *actual_x)
	Find the position in a string where an x coordinate falls. More...
static nserror	amiga_bm_nsfont_split (const plot_font_style_t *fstyle, const char *string, size_t length, int x, size_t *char_offset, int *actual_x)
	Find where to split a string to make it fit a width. More...
static ULONG	amiga_bm_nsfont_text (struct RastPort *rp, const char *string, ULONG length, const plot_font_style_t *fstyle, ULONG dx, ULONG dy, bool aa)
void	ami_font_diskfont_init (void)
void	ami_font_diskfont_fini (void)

Variables
static plot_font_style_t *	prev_fstyle = NULL
static struct TextFont *	prev_font = NULL
static struct RastPort	temp_rp
const struct ami_font_functions	ami_font_diskfont_table

Macro Definition Documentation

MAX_FONT_NAME_SIZE

#define MAX_FONT_NAME_SIZE   33

Definition at line 40 of file font_diskfont.c.

Function Documentation

ami_font_bm_convert_local_to_utf8_offset()

static size_t ami_font_bm_convert_local_to_utf8_offset ( const char *  utf8string, size_t  length, UWORD  offset  )

static

Definition at line 120 of file font_diskfont.c.

References utf8_next().

Referenced by amiga_bm_nsfont_position_in_string(), and amiga_bm_nsfont_split().

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ami_font_bm_open()

static struct TextFont * ami_font_bm_open ( struct RastPort *  rp, const plot_font_style_t *  fstyle  )

static

Definition at line 46 of file font_diskfont.c.

References plot_font_style::family, plot_font_style::flags, FONTF_ITALIC, FONTF_OBLIQUE, MAX_FONT_NAME_SIZE, NSLOG, nsoption_charp, PLOT_FONT_FAMILY_CURSIVE, PLOT_FONT_FAMILY_FANTASY, PLOT_FONT_FAMILY_MONOSPACE, PLOT_FONT_FAMILY_SANS_SERIF, PLOT_FONT_FAMILY_SERIF, PLOT_STYLE_SCALE, prev_font, prev_fstyle, plot_font_style::size, and plot_font_style::weight.

Referenced by amiga_bm_nsfont_position_in_string(), amiga_bm_nsfont_split(), amiga_bm_nsfont_text(), and amiga_bm_nsfont_width().

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ami_font_diskfont_fini()

void ami_font_diskfont_fini

(

void

)

Definition at line 304 of file font_diskfont.c.

References prev_font, and prev_fstyle.

Referenced by ami_font_fini().

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ami_font_diskfont_init()

void ami_font_diskfont_init

(

void

)

Definition at line 292 of file font_diskfont.c.

References ami_font_diskfont_table, ami_nsfont, prev_fstyle, and temp_rp.

Referenced by ami_font_init().

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amiga_bm_nsfont_position_in_string()

static nserror amiga_bm_nsfont_position_in_string ( const plot_font_style_t *  fstyle, const char *  string, size_t  length, int  x, size_t *  char_offset, int *  actual_x  )

static

Find the position in a string where an x coordinate falls.

Parameters

fstyle	style for this text
string	UTF-8 string to measure
length	length of string
x	x coordinate to search for
char_offset	updated to offset in string of actual_x, [0..length]
actual_x	updated to x coordinate of character closest to x

Returns

true on success, false on error and error reported

Definition at line 166 of file font_diskfont.c.

References ami_font_bm_convert_local_to_utf8_offset(), ami_font_bm_open(), NSERROR_INVALID, NSERROR_OK, temp_rp, and utf8_to_local_encoding().

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amiga_bm_nsfont_split()

static nserror amiga_bm_nsfont_split ( const plot_font_style_t *  fstyle, const char *  string, size_t  length, int  x, size_t *  char_offset, int *  actual_x  )

static

Find where to split a string to make it fit a width.

Parameters

fstyle	style for this text
string	UTF-8 string to measure
length	length of string
x	width available
char_offset	updated to offset in string of actual_x, [1..length]
actual_x	updated to x coordinate of character closest to x

Returns

true on success, false on error and error reported

On exit, char_offset indicates first character after split point.

Note: char_offset of 0 should never be returned.

Returns: char_offset giving split point closest to x, where actual_x <= x else char_offset giving split point closest to x, where actual_x > x

Returning char_offset == length means no split possible

Definition at line 216 of file font_diskfont.c.

References ami_font_bm_convert_local_to_utf8_offset(), ami_font_bm_open(), NSERROR_INVALID, NSERROR_OK, temp_rp, and utf8_to_local_encoding().

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amiga_bm_nsfont_text()

static ULONG amiga_bm_nsfont_text ( struct RastPort *  rp, const char *  string, ULONG  length, const plot_font_style_t *  fstyle, ULONG  dx, ULONG  dy, bool  aa  )

static

Definition at line 266 of file font_diskfont.c.

References ami_font_bm_open(), NSERROR_OK, and utf8_to_local_encoding().

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amiga_bm_nsfont_width()

static nserror amiga_bm_nsfont_width ( const plot_font_style_t *  fstyle, const char *  string, size_t  length, int *  width  )

static

Definition at line 133 of file font_diskfont.c.

References ami_font_bm_open(), NSERROR_INVALID, NSERROR_OK, temp_rp, utf8_to_local_encoding(), and width.

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Variable Documentation

ami_font_diskfont_table

const struct ami_font_functions ami_font_diskfont_table

Initial value:

= {
        amiga_bm_nsfont_width,
        amiga_bm_nsfont_position_in_string,
        amiga_bm_nsfont_split,
        amiga_bm_nsfont_text
}

Definition at line 285 of file font_diskfont.c.

Referenced by ami_font_diskfont_init().

prev_font

struct TextFont* prev_font = NULL

static

Definition at line 43 of file font_diskfont.c.

Referenced by ami_font_bm_open(), and ami_font_diskfont_fini().

prev_fstyle

plot_font_style_t* prev_fstyle = NULL

static

Definition at line 42 of file font_diskfont.c.

Referenced by ami_font_bm_open(), ami_font_diskfont_fini(), and ami_font_diskfont_init().

temp_rp

struct RastPort temp_rp

static

Definition at line 44 of file font_diskfont.c.

Referenced by ami_font_diskfont_init(), amiga_bm_nsfont_position_in_string(), amiga_bm_nsfont_split(), and amiga_bm_nsfont_width().