font.c File Reference

#include <assert.h>
#include <stdbool.h>
#include <stdlib.h>
#include "netsurf/inttypes.h"
#include "utils/utf8.h"
#include "utils/log.h"
#include "utils/nsoption.h"
#include "netsurf/layout.h"
#include "netsurf/mouse.h"
#include "netsurf/plotters.h"
#include "atari/gui.h"
#include "atari/plot/fontplot.h"
#include "atari/plot/plot.h"
#include "atari/findfile.h"
#include "atari/font.h"

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Functions
static nserror	atari_font_position (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	atari_font_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 nserror	atari_font_width (const plot_font_style_t *fstyle, const char *str, size_t length, int *width)
	Measure the width of a string. More...

Variables
FONT_PLOTTER	fplotter
static struct gui_layout_table	layout_table
struct gui_layout_table *	atari_layout_table = &layout_table

Function Documentation

atari_font_position()

static nserror atari_font_position ( 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

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

Returns

NSERROR_OK and char_offset and actual_x updated or appropriate error code on faliure

Definition at line 52 of file font.c.

References fplotter, NSERROR_OK, s_font_plotter::pixel_pos, plot_get_scale(), and plot_font_style::size.

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atari_font_split()

static nserror atari_font_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

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

Returns

NSERROR_OK or appropriate error code on faliure

On exit, char_offset indicates first character after split point.

Note

char_offset of 0 must 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 98 of file font.c.

References fplotter, NSERROR_OK, plot_get_scale(), plot_font_style::size, and s_font_plotter::str_split.

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atari_font_width()

static nserror atari_font_width ( const plot_font_style_t *  fstyle, const char *  str, size_t  length, int *  width  )

static

Measure the width of a string.

Parameters

[in]	fstyle	plot style for this text
[in]	str	UTF-8 string to measure
[in]	length	length of string, in bytes
[out]	width	updated to width of string[0..length)

Returns

NSERROR_OK and width updated or appropriate error code on faliure

Definition at line 131 of file font.c.

References fplotter, NSERROR_OK, plot_get_scale(), plot_font_style::size, s_font_plotter::str_width, and width.

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Variable Documentation

atari_layout_table

struct gui_layout_table* atari_layout_table = &layout_table

Definition at line 156 of file font.c.

Referenced by main().

fplotter

FONT_PLOTTER fplotter

extern

Definition at line 165 of file plot.c.

Referenced by atari_font_position(), atari_font_split(), atari_font_width(), new_font_plotter(), plot_finalise(), plot_get_text_plotter(), plot_init(), plot_set_text_plotter(), and plot_text().

layout_table

struct gui_layout_table layout_table

static

Initial value:

= {
        .width = atari_font_width,
        .position = atari_font_position,
        .split = atari_font_split,
}

Definition at line 150 of file font.c.