font.cpp File Reference

Font handling (BeOS implementation). More...

#include <stdbool.h>
#include <assert.h>
#include <stdio.h>
#include <Font.h>
#include <String.h>
#include <View.h>
#include "utils/utils.h"
#include "utils/log.h"
#include "utils/nsoption.h"
#include "utils/nsurl.h"
#include "netsurf/layout.h"
#include "beos/gui.h"
#include "beos/font.h"
#include "beos/plotters.h"

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Macros
#define	__STDBOOL_H__   1

Functions
void	nsbeos_style_to_font (BFont &font, const struct plot_font_style *fstyle)
	Convert a font style to a PangoFontDescription. More...
static nserror	beos_font_width (const plot_font_style_t *fstyle, const char *string, size_t length, int *width)
	Measure the width of a string. More...
static int	utf8_char_len (const char *c)
static nserror	beos_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	beos_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...
bool	nsfont_paint (const plot_font_style_t *fstyle, const char *string, size_t length, int x, int y)
	Render a string. More...

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

Detailed Description

Font handling (BeOS implementation).

TODO: check for correctness, the code is taken from the GTK one. maybe use the current view instead of constructing a new BFont each time ?

Definition in file font.cpp.

Macro Definition Documentation

__STDBOOL_H__

#define __STDBOOL_H__   1

Definition at line 26 of file font.cpp.

Function Documentation

beos_font_position()

static nserror beos_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

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 203 of file font.cpp.

References nsbeos_style_to_font(), NSERROR_OK, NSLOG, and utf8_char_len().

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beos_font_split()

static nserror beos_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 260 of file font.cpp.

References MIN, nsbeos_style_to_font(), NSERROR_OK, NSLOG, and utf8_char_len().

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beos_font_width()

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

static

Measure the width of a string.

Parameters

fstyle	style for this text
string	UTF-8 string to measure
length	length of string
width	updated to width of string[0..length)

Returns

true on success, false on error and error reported

Definition at line 150 of file font.cpp.

References nsbeos_style_to_font(), NSERROR_OK, and width.

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nsbeos_style_to_font()

void nsbeos_style_to_font	(	BFont &	font,
		const struct plot_font_style *	fstyle
	)

Convert a font style to a PangoFontDescription.

Parameters

font	Beos font object.
fstyle	style for this text

Definition at line 53 of file font.cpp.

References plot_font_style::family, plot_font_style::flags, FONTF_ITALIC, FONTF_OBLIQUE, 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, plot_font_style::size, and plot_font_style::weight.

Referenced by beos_font_position(), beos_font_split(), beos_font_width(), gui_set_clipboard(), and nsfont_paint().

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nsfont_paint()

bool nsfont_paint	(	const plot_font_style_t *	fstyle,
		const char *	string,
		size_t	length,
		int	x,
		int	y
	)

Render a string.

Parameters

fstyle	style for this text
string	UTF-8 string to measure
length	length of string
x	x coordinate
y	y coordinate

Returns

true on success, false on error and error reported

Definition at line 312 of file font.cpp.

References plot_font_style::background, beos_warn_user(), plot_font_style::foreground, line(), nsbeos_current_gc(), nsbeos_rgb_colour(), nsbeos_style_to_font(), and view.

Referenced by nsbeos_plot_text(), nsgtk_plot_text(), and ro_plot_text().

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utf8_char_len()

static int utf8_char_len ( const char *  c )

static

Definition at line 169 of file font.cpp.

Referenced by beos_font_position(), and beos_font_split().

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Variable Documentation

beos_layout_table

struct gui_layout_table* beos_layout_table = &layout_table

Definition at line 373 of file font.cpp.

Referenced by gui_init_replicant(), and main().

layout_table

struct gui_layout_table layout_table

static

Initial value:

= {
  beos_font_width,
  beos_font_position,
  beos_font_split
}

Definition at line 367 of file font.cpp.