layout.c File Reference

monkey implementation of font layout. More...

#include <stddef.h>
#include "utils/utf8.h"
#include "netsurf/plot_style.h"
#include "netsurf/layout.h"
#include "monkey/layout.h"

Include dependency graph for layout.c:

Go to the source code of this file.

Functions
static nserror	nsfont_width (const plot_font_style_t *fstyle, const char *string, size_t length, int *width)
static nserror	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	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...

Variables
static struct gui_layout_table	layout_table
struct gui_layout_table *	monkey_layout_table = &layout_table

Detailed Description

monkey implementation of font layout.

Definition in file layout.c.

Function Documentation

nsfont_position_in_string()

static nserror 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 52 of file layout.c.

References NSERROR_OK, PLOT_STYLE_SCALE, and plot_font_style::size.

nsfont_split()

static nserror 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, 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 87 of file layout.c.

References NSERROR_OK, PLOT_STYLE_SCALE, and plot_font_style::size.

nsfont_width()

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

static

Definition at line 32 of file layout.c.

References NSERROR_OK, PLOT_STYLE_SCALE, plot_font_style::size, utf8_bounded_length(), and width.

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Variable Documentation

layout_table

struct gui_layout_table layout_table

static

Initial value:

= {
        .width = nsfont_width,
        .position = nsfont_position_in_string,
        .split = nsfont_split,
}

Definition at line 111 of file layout.c.

monkey_layout_table

struct gui_layout_table* monkey_layout_table = &layout_table

Definition at line 117 of file layout.c.

Referenced by main().