#include <assert.h>
#include <ft2build.h>
#include "netsurf/inttypes.h"
#include "utils/filepath.h"
#include "utils/utf8.h"
#include "utils/log.h"
#include "utils/nsoption.h"
#include "netsurf/utf8.h"
#include "netsurf/layout.h"
#include "netsurf/browser.h"
#include "netsurf/plot_style.h"
#include "framebuffer/gui.h"
#include "framebuffer/font.h"
#include "framebuffer/findfile.h"

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Data Structures
struct	fb_faceid_s

Macros
#define	CACHE_MIN_SIZE (100 * 1024)

#define	BOLD_WEIGHT 700

#define	FB_FACE_DEFAULT 0

Typedefs
typedef struct fb_faceid_s	fb_faceid_t

Enumerations
enum	fb_face_e { FB_FACE_SANS_SERIF = 0 , FB_FACE_SANS_SERIF_BOLD , FB_FACE_SANS_SERIF_ITALIC , FB_FACE_SANS_SERIF_ITALIC_BOLD , FB_FACE_SERIF , FB_FACE_SERIF_BOLD , FB_FACE_MONOSPACE , FB_FACE_MONOSPACE_BOLD , FB_FACE_CURSIVE , FB_FACE_FANTASY , FB_FACE_COUNT }

Functions
static FT_Error	ft_face_requester (FTC_FaceID face_id, FT_Library library, FT_Pointer request_data, FT_Face *face)
	map cache manager handle to face id More...

static fb_faceid_t *	fb_new_face (const char option, const char resname, const char *fontname)
	create new framebuffer face and cause it to be loaded to check its ok More...

bool	fb_font_init (void)
	Initialise framebuffer font handling. More...

bool	fb_font_finalise (void)
	Finalise framebuffer font handling. More...

static void	fb_fill_scalar (const plot_font_style_t *fstyle, FTC_Scaler srec)
	fill freetype scalar More...

FT_Glyph	fb_getglyph (const plot_font_style_t *fstyle, uint32_t ucs4)

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

nserror	fb_font_position (const plot_font_style_t fstyle, const char string, size_t length, int x, size_t char_offset, int actual_x)

static nserror	fb_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...

Variables
static FT_Library	library

static FTC_Manager	ft_cmanager

static FTC_CMapCache	ft_cmap_cache

static FTC_ImageCache	ft_image_cache

int	ft_load_type

static fb_faceid_t *	fb_faces [FB_FACE_COUNT]

static struct gui_layout_table	layout_table

struct gui_layout_table *	framebuffer_layout_table = &layout_table

struct gui_utf8_table *	framebuffer_utf8_table = NULL

Macro Definition Documentation

◆ BOLD_WEIGHT

#define BOLD_WEIGHT 700

Definition at line 42 of file font_freetype.c.

◆ CACHE_MIN_SIZE

#define CACHE_MIN_SIZE (100 * 1024)

Definition at line 40 of file font_freetype.c.

◆ FB_FACE_DEFAULT

#define FB_FACE_DEFAULT 0

Definition at line 74 of file font_freetype.c.

Typedef Documentation

◆ fb_faceid_t

typedef struct fb_faceid_s fb_faceid_t

Enumeration Type Documentation

◆ fb_face_e

enum fb_face_e

Enumerator
FB_FACE_SANS_SERIF
FB_FACE_SANS_SERIF_BOLD
FB_FACE_SANS_SERIF_ITALIC
FB_FACE_SANS_SERIF_ITALIC_BOLD
FB_FACE_SERIF
FB_FACE_SERIF_BOLD
FB_FACE_MONOSPACE
FB_FACE_MONOSPACE_BOLD
FB_FACE_CURSIVE
FB_FACE_FANTASY
FB_FACE_COUNT

Definition at line 59 of file font_freetype.c.

Function Documentation

◆ fb_fill_scalar()

static void fb_fill_scalar	(	const plot_font_style_t *	fstyle,
		FTC_Scaler	srec
	)

static

fill freetype scalar

Definition at line 345 of file font_freetype.c.

References BOLD_WEIGHT, browser_get_dpi(), plot_font_style::family, FB_FACE_CURSIVE, FB_FACE_DEFAULT, FB_FACE_FANTASY, FB_FACE_MONOSPACE, FB_FACE_MONOSPACE_BOLD, FB_FACE_SANS_SERIF, FB_FACE_SANS_SERIF_BOLD, FB_FACE_SANS_SERIF_ITALIC, FB_FACE_SANS_SERIF_ITALIC_BOLD, FB_FACE_SERIF, FB_FACE_SERIF_BOLD, fb_faces, plot_font_style::flags, FONTF_ITALIC, FONTF_OBLIQUE, PLOT_FONT_FAMILY_CURSIVE, PLOT_FONT_FAMILY_FANTASY, PLOT_FONT_FAMILY_MONOSPACE, PLOT_FONT_FAMILY_SANS_SERIF, PLOT_FONT_FAMILY_SERIF, PLOT_STYLE_SCALE, plot_font_style::size, and plot_font_style::weight.

Referenced by fb_getglyph().

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◆ fb_font_finalise()

bool fb_font_finalise ( void )

Finalise framebuffer font handling.

Definition at line 316 of file font_freetype.c.

◆ fb_font_init()

bool fb_font_init ( void )

Initialise framebuffer font handling.

Definition at line 147 of file font_freetype.c.

◆ fb_font_position()

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

Definition at line 459 of file font_freetype.c.

References fb_getglyph(), NSERROR_OK, utf8_next(), and utf8_to_ucs4().

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◆ fb_font_split()

static nserror fb_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

fstyle	style for this text
string	UTF-8 string to measure
length	length of string, in bytes
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 516 of file font_freetype.c.

References fb_getglyph(), NSERROR_OK, utf8_next(), and utf8_to_ucs4().

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◆ fb_font_width()

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

Definition at line 434 of file font_freetype.c.

References fb_getglyph(), NSERROR_OK, utf8_next(), utf8_to_ucs4(), and width.

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◆ fb_getglyph()

FT_Glyph fb_getglyph	(	const plot_font_style_t *	fstyle,
		uint32_t	ucs4
	)

Definition at line 402 of file font_freetype.c.

References fb_faceid_s::cidx, fb_fill_scalar(), ft_cmap_cache, ft_image_cache, and ft_load_type.

Referenced by fb_font_position(), fb_font_split(), and fb_font_width().

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◆ fb_new_face()

static fb_faceid_t * fb_new_face	(	const char *	option,
		const char *	resname,
		const char *	fontname
	)

static

create new framebuffer face and cause it to be loaded to check its ok

Definition at line 118 of file font_freetype.c.

References filepath_sfind(), fb_faceid_s::fontfile, ft_cmanager, NSLOG, PATH_MAX, and respaths.

Referenced by fb_font_init().

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◆ ft_face_requester()

static FT_Error ft_face_requester	(	FTC_FaceID	face_id,
		FT_Library	library,
		FT_Pointer	request_data,
		FT_Face *	face
	)

static

map cache manager handle to face id

Definition at line 82 of file font_freetype.c.

References fb_faceid_s::cidx, fb_faceid_s::fontfile, fb_faceid_s::index, library, and NSLOG.

Referenced by fb_font_init().

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Variable Documentation

◆ fb_faces

fb_faceid_t* fb_faces[FB_FACE_COUNT]

static

Definition at line 76 of file font_freetype.c.

Referenced by fb_fill_scalar(), fb_font_finalise(), and fb_font_init().

◆ framebuffer_layout_table

struct gui_layout_table* framebuffer_layout_table = &layout_table

Definition at line 562 of file font_freetype.c.

◆ framebuffer_utf8_table

struct gui_utf8_table* framebuffer_utf8_table = NULL

Definition at line 565 of file font_freetype.c.

◆ ft_cmanager

FTC_Manager ft_cmanager

static

Definition at line 45 of file font_freetype.c.

Referenced by fb_font_finalise(), fb_font_init(), and fb_new_face().

◆ ft_cmap_cache

FTC_CMapCache ft_cmap_cache

static

Definition at line 46 of file font_freetype.c.

Referenced by fb_font_init(), and fb_getglyph().

◆ ft_image_cache

FTC_ImageCache ft_image_cache

static

Definition at line 47 of file font_freetype.c.

Referenced by fb_font_init(), and fb_getglyph().

◆ ft_load_type

int ft_load_type

Definition at line 49 of file font_freetype.c.

Referenced by fb_font_init(), and fb_getglyph().

◆ layout_table

struct gui_layout_table layout_table

static

Initial value:

= {
        .width = fb_font_width,
        .position = fb_font_position,
        .split = fb_font_split,
}

Definition at line 556 of file font_freetype.c.

◆ library

FT_Library library

static

Definition at line 44 of file font_freetype.c.

Referenced by fb_font_finalise(), fb_font_init(), and ft_face_requester().

Data Structures

Macros

Typedefs

Enumerations

Functions

Variables

Macro Definition Documentation

◆ BOLD_WEIGHT

◆ CACHE_MIN_SIZE

◆ FB_FACE_DEFAULT

Typedef Documentation

◆ fb_faceid_t

Enumeration Type Documentation

◆ fb_face_e

Function Documentation

◆ fb_fill_scalar()

◆ fb_font_finalise()

◆ fb_font_init()

◆ fb_font_position()

◆ fb_font_split()

◆ fb_font_width()

◆ fb_getglyph()

◆ fb_new_face()

◆ ft_face_requester()

Variable Documentation

◆ fb_faces

◆ framebuffer_layout_table

◆ framebuffer_utf8_table

◆ ft_cmanager

◆ ft_cmap_cache

◆ ft_image_cache

◆ ft_load_type

◆ layout_table

◆ library