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use byteorder::{BigEndian, ReadBytesExt};
use canvas::{Canvas, Format, RasterizationOptions};
use euclid::{Point2D, Rect, Size2D, Vector2D};
use freetype::freetype::{FT_Byte, FT_Done_Face, FT_Error, FT_FACE_FLAG_FIXED_WIDTH, FT_Face};
use freetype::freetype::{FT_Get_Char_Index, FT_Get_Postscript_Name, FT_Get_Sfnt_Table};
use freetype::freetype::{FT_Init_FreeType, FT_LOAD_DEFAULT, FT_LOAD_MONOCHROME};
use freetype::freetype::{FT_LOAD_NO_HINTING, FT_LOAD_RENDER, FT_Library, FT_Load_Glyph, FT_Long};
use freetype::freetype::{FT_New_Memory_Face, FT_Reference_Face, FT_STYLE_FLAG_ITALIC};
use freetype::freetype::{FT_Set_Char_Size, FT_Set_Transform, FT_Sfnt_Tag, FT_UInt, FT_ULong};
use freetype::freetype::{FT_UShort, FT_Vector};
use freetype::tt_os2::TT_OS2;
use lyon_path::builder::PathBuilder;
use memmap::Mmap;
use std::f32;
use std::ffi::CStr;
use std::fmt::{self, Debug, Formatter};
use std::fs::File;
use std::iter;
use std::mem;
use std::ops::Deref;
use std::os::raw::{c_char, c_void};
use std::path::Path;
use std::ptr;
use std::slice;
use std::sync::Arc;
use error::{FontLoadingError, GlyphLoadingError};
use file_type::FileType;
use handle::Handle;
use hinting::HintingOptions;
use loader::Loader;
use metrics::Metrics;
use properties::{Properties, Stretch, Style, Weight};
const PS_DICT_FULL_NAME: u32 = 38;
const TT_NAME_ID_FULL_NAME: u16 = 4;
const TT_PLATFORM_APPLE_UNICODE: u16 = 0;
const FT_POINT_TAG_ON_CURVE: c_char = 0x01;
const FT_POINT_TAG_CUBIC_CONTROL: c_char = 0x02;
const FT_RENDER_MODE_NORMAL: u32 = 0;
const FT_RENDER_MODE_LIGHT: u32 = 1;
const FT_RENDER_MODE_MONO: u32 = 2;
const FT_RENDER_MODE_LCD: u32 = 3;
const FT_LOAD_TARGET_LIGHT: u32 = (FT_RENDER_MODE_LIGHT & 15) << 16;
const FT_LOAD_TARGET_LCD: u32 = (FT_RENDER_MODE_LCD & 15) << 16;
const FT_LOAD_TARGET_MONO: u32 = (FT_RENDER_MODE_MONO & 15) << 16;
const FT_LOAD_TARGET_NORMAL: u32 = (FT_RENDER_MODE_NORMAL & 15) << 16;
const FT_PIXEL_MODE_MONO: u8 = 1;
const FT_PIXEL_MODE_GRAY: u8 = 2;
const FT_PIXEL_MODE_LCD: u8 = 5;
const FT_PIXEL_MODE_LCD_V: u8 = 6;
const OS2_FS_SELECTION_OBLIQUE: u16 = 1 << 9;
#[allow(dead_code)]
const BDF_PROPERTY_TYPE_NONE: BDF_PropertyType = 0;
#[allow(dead_code)]
const BDF_PROPERTY_TYPE_ATOM: BDF_PropertyType = 1;
#[allow(dead_code)]
const BDF_PROPERTY_TYPE_INTEGER: BDF_PropertyType = 2;
#[allow(dead_code)]
const BDF_PROPERTY_TYPE_CARDINAL: BDF_PropertyType = 3;
thread_local! {
static FREETYPE_LIBRARY: FT_Library = {
unsafe {
let mut library = ptr::null_mut();
assert_eq!(FT_Init_FreeType(&mut library), 0);
library
}
};
}
pub type NativeFont = FT_Face;
#[allow(non_camel_case_types)]
type BDF_PropertyType = i32;
#[repr(C)]
struct BDF_PropertyRec {
property_type: BDF_PropertyType,
value: *const c_char,
}
pub struct Font {
freetype_face: FT_Face,
font_data: FontData,
}
impl Font {
pub fn from_bytes(font_data: Arc<Vec<u8>>, font_index: u32) -> Result<Font, FontLoadingError> {
FREETYPE_LIBRARY.with(|freetype_library| {
unsafe {
let mut freetype_face = ptr::null_mut();
if FT_New_Memory_Face(*freetype_library,
(*font_data).as_ptr(),
font_data.len() as i64,
font_index as FT_Long,
&mut freetype_face) != 0 {
return Err(FontLoadingError::Parse)
}
setup_freetype_face(freetype_face);
Ok(Font {
freetype_face,
font_data: FontData::Memory(font_data),
})
}
})
}
pub fn from_file(file: &mut File, font_index: u32) -> Result<Font, FontLoadingError> {
unsafe {
let mmap = try!(Mmap::map(&file));
FREETYPE_LIBRARY.with(|freetype_library| {
let mut freetype_face = ptr::null_mut();
if FT_New_Memory_Face(*freetype_library,
(*mmap).as_ptr(),
mmap.len() as i64,
font_index as FT_Long,
&mut freetype_face) != 0 {
return Err(FontLoadingError::Parse)
}
setup_freetype_face(freetype_face);
Ok(Font {
freetype_face,
font_data: FontData::File(Arc::new(mmap)),
})
})
}
}
#[inline]
pub fn from_path<P>(path: P, font_index: u32) -> Result<Font, FontLoadingError>
where P: AsRef<Path> {
<Font as Loader>::from_path(path, font_index)
}
pub unsafe fn from_native_font(freetype_face: NativeFont) -> Font {
const CHUNK_SIZE: usize = 4096;
let mut font_data = vec![];
loop {
font_data.extend(iter::repeat(0).take(CHUNK_SIZE));
let freetype_stream = (*freetype_face).stream;
let n_read = ((*freetype_stream).read.unwrap())(freetype_stream,
font_data.len() as u64,
font_data.as_mut_ptr(),
CHUNK_SIZE as u64);
if n_read < CHUNK_SIZE as u64 {
break
}
}
Font::from_bytes(Arc::new(font_data), (*freetype_face).face_index as u32).unwrap()
}
#[inline]
pub fn from_handle(handle: &Handle) -> Result<Self, FontLoadingError> {
<Self as Loader>::from_handle(handle)
}
pub fn analyze_bytes(font_data: Arc<Vec<u8>>) -> Result<FileType, FontLoadingError> {
FREETYPE_LIBRARY.with(|freetype_library| {
unsafe {
let mut freetype_face = ptr::null_mut();
if FT_New_Memory_Face(*freetype_library,
(*font_data).as_ptr(),
font_data.len() as i64,
0,
&mut freetype_face) != 0 {
return Err(FontLoadingError::Parse)
}
let font_type = match (*freetype_face).num_faces {
1 => FileType::Single,
num_faces => FileType::Collection(num_faces as u32),
};
FT_Done_Face(freetype_face);
Ok(font_type)
}
})
}
pub fn analyze_file(file: &mut File) -> Result<FileType, FontLoadingError> {
FREETYPE_LIBRARY.with(|freetype_library| {
unsafe {
let mmap = try!(Mmap::map(&file));
let mut freetype_face = ptr::null_mut();
if FT_New_Memory_Face(*freetype_library,
(*mmap).as_ptr(),
mmap.len() as i64,
0,
&mut freetype_face) != 0 {
return Err(FontLoadingError::Parse)
}
let font_type = match (*freetype_face).num_faces {
1 => FileType::Single,
num_faces => FileType::Collection(num_faces as u32),
};
FT_Done_Face(freetype_face);
Ok(font_type)
}
})
}
#[inline]
pub fn analyze_path<P>(path: P) -> Result<FileType, FontLoadingError> where P: AsRef<Path> {
<Self as Loader>::analyze_path(path)
}
pub fn native_font(&self) -> NativeFont {
unsafe {
assert_eq!(FT_Reference_Face(self.freetype_face), 0);
self.freetype_face
}
}
pub fn postscript_name(&self) -> Option<String> {
unsafe {
let postscript_name = FT_Get_Postscript_Name(self.freetype_face);
if !postscript_name.is_null() {
return Some(CStr::from_ptr(postscript_name).to_str().unwrap().to_owned())
}
let font_format = FT_Get_Font_Format(self.freetype_face);
assert!(!font_format.is_null());
let font_format = CStr::from_ptr(font_format).to_str().unwrap();
if font_format != "BDF" && font_format != "PCF" {
return None
}
let mut property = mem::zeroed();
if FT_Get_BDF_Property(self.freetype_face,
"_DEC_DEVICE_FONTNAMES\0".as_ptr() as *const c_char,
&mut property) != 0 {
return None
}
if property.property_type != BDF_PROPERTY_TYPE_ATOM {
return None
}
let dec_device_fontnames = CStr::from_ptr(property.value).to_str().unwrap();
if !dec_device_fontnames.starts_with("PS=") {
return None
}
Some(dec_device_fontnames[3..].to_string())
}
}
pub fn full_name(&self) -> String {
self.get_type_1_or_sfnt_name(PS_DICT_FULL_NAME, TT_NAME_ID_FULL_NAME)
.unwrap_or_else(|| self.family_name())
}
pub fn family_name(&self) -> String {
unsafe {
CStr::from_ptr((*self.freetype_face).family_name).to_str().unwrap().to_owned()
}
}
pub fn is_monospace(&self) -> bool {
unsafe {
(*self.freetype_face).face_flags & (FT_FACE_FLAG_FIXED_WIDTH as i64) != 0
}
}
pub fn properties(&self) -> Properties {
unsafe {
let os2_table = self.get_os2_table();
let style = match os2_table {
Some(os2_table) if ((*os2_table).fsSelection & OS2_FS_SELECTION_OBLIQUE) != 0 => {
Style::Oblique
}
_ if ((*self.freetype_face).style_flags & (FT_STYLE_FLAG_ITALIC) as i64) != 0 => {
Style::Italic
}
_ => Style::Normal,
};
let stretch = match os2_table {
Some(os2_table) if (*os2_table).usWidthClass > 0 => {
Stretch(Stretch::MAPPING[((*os2_table).usWidthClass as usize) - 1])
}
_ => Stretch::NORMAL,
};
let weight = match os2_table {
None => Weight::NORMAL,
Some(os2_table) => Weight((*os2_table).usWeightClass as u32 as f32),
};
Properties {
style,
stretch,
weight,
}
}
}
#[inline]
pub fn glyph_for_char(&self, character: char) -> Option<u32> {
unsafe {
Some(FT_Get_Char_Index(self.freetype_face, character as FT_ULong))
}
}
#[inline]
pub fn glyph_count(&self) -> u32 {
unsafe {
(*self.freetype_face).num_glyphs as u32
}
}
pub fn outline<B>(&self, glyph_id: u32, hinting: HintingOptions, path_builder: &mut B)
-> Result<(), GlyphLoadingError>
where B: PathBuilder {
unsafe {
let rasterization_options = RasterizationOptions::GrayscaleAa;
let load_flags =
self.hinting_and_rasterization_options_to_load_flags(hinting,
rasterization_options);
let units_per_em = (*self.freetype_face).units_per_EM;
let grid_fitting_size = hinting.grid_fitting_size();
if let Some(size) = grid_fitting_size {
assert_eq!(FT_Set_Char_Size(self.freetype_face,
f32_to_ft_fixed_26_6(size),
0,
0,
0),
0);
}
if FT_Load_Glyph(self.freetype_face, glyph_id, load_flags as i32) != 0 {
return Err(GlyphLoadingError::NoSuchGlyph)
}
let outline = &(*(*self.freetype_face).glyph).outline;
let contours = slice::from_raw_parts((*outline).contours,
(*outline).n_contours as usize);
let point_positions = slice::from_raw_parts((*outline).points,
(*outline).n_points as usize);
let point_tags = slice::from_raw_parts((*outline).tags, (*outline).n_points as usize);
let mut current_point_index = 0;
for &last_point_index_in_contour in contours {
let last_point_index_in_contour = last_point_index_in_contour as usize;
let (mut first_point, first_tag) = get_point(&mut current_point_index,
point_positions,
point_tags,
last_point_index_in_contour,
grid_fitting_size,
units_per_em);
if (first_tag & FT_POINT_TAG_ON_CURVE) == 0 {
let mut temp_point_index = last_point_index_in_contour;
let (last_point, last_tag) = get_point(&mut temp_point_index,
point_positions,
point_tags,
last_point_index_in_contour,
grid_fitting_size,
units_per_em);
if (last_tag & FT_POINT_TAG_ON_CURVE) != 0 {
first_point = last_point
} else {
first_point = last_point.lerp(first_point, 0.5)
}
current_point_index -= 1;
}
path_builder.move_to(first_point);
while current_point_index <= last_point_index_in_contour {
let (mut point0, tag0) = get_point(&mut current_point_index,
point_positions,
point_tags,
last_point_index_in_contour,
grid_fitting_size,
units_per_em);
if (tag0 & FT_POINT_TAG_ON_CURVE) != 0 {
path_builder.line_to(point0);
continue
}
loop {
if current_point_index > last_point_index_in_contour {
path_builder.quadratic_bezier_to(point0, first_point);
break
}
let (point1, tag1) = get_point(&mut current_point_index,
point_positions,
point_tags,
last_point_index_in_contour,
grid_fitting_size,
units_per_em);
if (tag0 & FT_POINT_TAG_CUBIC_CONTROL) != 0 {
let (point2, _) = get_point(&mut current_point_index,
point_positions,
point_tags,
last_point_index_in_contour,
grid_fitting_size,
units_per_em);
path_builder.cubic_bezier_to(point0, point1, point2);
break;
}
if (tag1 & FT_POINT_TAG_ON_CURVE) != 0 {
path_builder.quadratic_bezier_to(point0, point1);
break;
}
let point_half = point0.lerp(point1, 0.5);
path_builder.quadratic_bezier_to(point0, point_half);
point0 = point1;
}
}
path_builder.close();
}
if hinting.grid_fitting_size().is_some() {
reset_freetype_face_char_size((*self).freetype_face)
}
}
return Ok(());
fn get_point(current_point_index: &mut usize,
point_positions: &[FT_Vector],
point_tags: &[c_char],
last_point_index_in_contour: usize,
grid_fitting_size: Option<f32>,
units_per_em: u16)
-> (Point2D<f32>, c_char) {
assert!(*current_point_index <= last_point_index_in_contour);
let point_position = point_positions[*current_point_index];
let point_tag = point_tags[*current_point_index];
*current_point_index += 1;
let mut point_position = Point2D::new(ft_fixed_26_6_to_f32(point_position.x),
ft_fixed_26_6_to_f32(point_position.y));
if let Some(grid_fitting_size) = grid_fitting_size {
point_position *= (units_per_em as f32) / grid_fitting_size
}
(point_position, point_tag)
}
}
pub fn typographic_bounds(&self, glyph_id: u32) -> Result<Rect<f32>, GlyphLoadingError> {
unsafe {
if FT_Load_Glyph(self.freetype_face,
glyph_id,
(FT_LOAD_DEFAULT | FT_LOAD_NO_HINTING) as i32) != 0 {
return Err(GlyphLoadingError::NoSuchGlyph)
}
let metrics = &(*(*self.freetype_face).glyph).metrics;
Ok(Rect::new(Point2D::new(ft_fixed_26_6_to_f32(metrics.horiBearingX),
ft_fixed_26_6_to_f32(metrics.horiBearingY - metrics.height)),
Size2D::new(ft_fixed_26_6_to_f32(metrics.width),
ft_fixed_26_6_to_f32(metrics.height))))
}
}
pub fn advance(&self, glyph_id: u32) -> Result<Vector2D<f32>, GlyphLoadingError> {
unsafe {
if FT_Load_Glyph(self.freetype_face,
glyph_id,
(FT_LOAD_DEFAULT | FT_LOAD_NO_HINTING) as i32) != 0 {
return Err(GlyphLoadingError::NoSuchGlyph)
}
let advance = (*(*self.freetype_face).glyph).advance;
Ok(Vector2D::new(ft_fixed_26_6_to_f32(advance.x), ft_fixed_26_6_to_f32(advance.y)))
}
}
pub fn origin(&self, _: u32) -> Result<Point2D<f32>, GlyphLoadingError> {
Ok(Point2D::zero())
}
pub fn metrics(&self) -> Metrics {
let os2_table = self.get_os2_table();
unsafe {
let ascender = (*self.freetype_face).ascender;
let descender = (*self.freetype_face).descender;
let underline_position = (*self.freetype_face).underline_position;
let underline_thickness = (*self.freetype_face).underline_thickness;
Metrics {
units_per_em: (*self.freetype_face).units_per_EM as u32,
ascent: ascender as f32,
descent: descender as f32,
line_gap: ((*self.freetype_face).height + descender - ascender) as f32,
underline_position: (underline_position + underline_thickness / 2) as f32,
underline_thickness: underline_thickness as f32,
cap_height: os2_table.map(|table| (*table).sCapHeight as f32).unwrap_or(0.0),
x_height: os2_table.map(|table| (*table).sxHeight as f32).unwrap_or(0.0),
}
}
}
#[inline]
pub fn supports_hinting_options(&self,
hinting_options: HintingOptions,
for_rasterization: bool)
-> bool {
match (hinting_options, for_rasterization) {
(HintingOptions::None, _) |
(HintingOptions::Vertical(_), true) |
(HintingOptions::VerticalSubpixel(_), true) |
(HintingOptions::Full(_), true) => true,
(HintingOptions::Vertical(_), false) |
(HintingOptions::VerticalSubpixel(_), false) |
(HintingOptions::Full(_), false) => false,
}
}
fn get_type_1_or_sfnt_name(&self, type_1_id: u32, sfnt_id: u16) -> Option<String> {
unsafe {
let ps_value_size = FT_Get_PS_Font_Value(self.freetype_face,
type_1_id,
0,
ptr::null_mut(),
0);
if ps_value_size > 0 {
let mut buffer = vec![0; ps_value_size as usize];
if FT_Get_PS_Font_Value(self.freetype_face,
type_1_id,
0,
buffer.as_mut_ptr() as *mut c_void,
buffer.len() as i64) == 0 {
return String::from_utf8(buffer).ok()
}
}
let sfnt_name_count = FT_Get_Sfnt_Name_Count(self.freetype_face);
let mut sfnt_name = mem::zeroed();
for sfnt_name_index in 0..sfnt_name_count {
assert_eq!(FT_Get_Sfnt_Name(self.freetype_face, sfnt_name_index, &mut sfnt_name),
0);
if sfnt_name.name_id != sfnt_id {
continue
}
match (sfnt_name.platform_id, sfnt_name.encoding_id) {
(TT_PLATFORM_APPLE_UNICODE, _) => {
let mut sfnt_name_bytes =
slice::from_raw_parts(sfnt_name.string, sfnt_name.string_len as usize);
let mut sfnt_name_string = Vec::with_capacity(sfnt_name_bytes.len() / 2);
while !sfnt_name_bytes.is_empty() {
sfnt_name_string.push(sfnt_name_bytes.read_u16::<BigEndian>().unwrap())
}
if let Ok(result) = String::from_utf16(&sfnt_name_string) {
return Some(result)
}
}
(platform_id, _) => {
warn!("get_type_1_or_sfnt_name(): found invalid platform ID {}",
platform_id);
}
}
}
None
}
}
fn get_os2_table(&self) -> Option<*const TT_OS2> {
unsafe {
let table = FT_Get_Sfnt_Table(self.freetype_face, FT_Sfnt_Tag::FT_SFNT_OS2);
if table.is_null() {
None
} else {
Some(table as *const TT_OS2)
}
}
}
#[inline]
pub fn raster_bounds(&self,
glyph_id: u32,
point_size: f32,
origin: &Point2D<f32>,
hinting_options: HintingOptions,
rasterization_options: RasterizationOptions)
-> Result<Rect<i32>, GlyphLoadingError> {
<Self as Loader>::raster_bounds(self,
glyph_id,
point_size,
origin,
hinting_options,
rasterization_options)
}
pub fn rasterize_glyph(&self,
canvas: &mut Canvas,
glyph_id: u32,
point_size: f32,
origin: &Point2D<f32>,
hinting_options: HintingOptions,
rasterization_options: RasterizationOptions)
-> Result<(), GlyphLoadingError> {
unsafe {
let mut delta = FT_Vector {
x: f32_to_ft_fixed_26_6(origin.x),
y: f32_to_ft_fixed_26_6(origin.y),
};
FT_Set_Transform(self.freetype_face, ptr::null_mut(), &mut delta);
assert_eq!(FT_Set_Char_Size(self.freetype_face,
f32_to_ft_fixed_26_6(point_size),
0,
0,
0),
0);
let mut load_flags = FT_LOAD_DEFAULT | FT_LOAD_RENDER;
load_flags |=
self.hinting_and_rasterization_options_to_load_flags(hinting_options,
rasterization_options);
if FT_Load_Glyph(self.freetype_face, glyph_id, load_flags as i32) != 0 {
return Err(GlyphLoadingError::NoSuchGlyph)
}
let bitmap = &(*(*self.freetype_face).glyph).bitmap;
let bitmap_stride = (*bitmap).pitch as usize;
let bitmap_width = (*bitmap).width as u32;
let bitmap_height = (*bitmap).rows as u32;
let bitmap_size = Size2D::new(bitmap_width, bitmap_height);
let bitmap_buffer = (*bitmap).buffer as *const i8 as *const u8;
let bitmap_length = bitmap_stride * bitmap_height as usize;
let buffer = slice::from_raw_parts(bitmap_buffer, bitmap_length);
match (*bitmap).pixel_mode {
FT_PIXEL_MODE_GRAY => {
canvas.blit_from(buffer, &bitmap_size, bitmap_stride, Format::A8);
}
FT_PIXEL_MODE_LCD | FT_PIXEL_MODE_LCD_V => {
canvas.blit_from(buffer, &bitmap_size, bitmap_stride, Format::Rgb24);
}
FT_PIXEL_MODE_MONO => {
canvas.blit_from_bitmap_1bpp(buffer, &bitmap_size, bitmap_stride);
}
_ => panic!("Unexpected FreeType pixel mode!"),
}
FT_Set_Transform(self.freetype_face, ptr::null_mut(), ptr::null_mut());
Ok(())
}
}
fn hinting_and_rasterization_options_to_load_flags(&self,
hinting: HintingOptions,
rasterization: RasterizationOptions)
-> u32 {
let mut options = match (hinting, rasterization) {
(HintingOptions::VerticalSubpixel(_), _) |
(_, RasterizationOptions::SubpixelAa) => FT_LOAD_TARGET_LCD,
(HintingOptions::None, _) => FT_LOAD_TARGET_NORMAL | FT_LOAD_NO_HINTING,
(HintingOptions::Vertical(_), RasterizationOptions::Bilevel) |
(HintingOptions::Full(_), RasterizationOptions::Bilevel) => FT_LOAD_TARGET_MONO,
(HintingOptions::Vertical(_), _) => FT_LOAD_TARGET_LIGHT,
(HintingOptions::Full(_), _) => FT_LOAD_TARGET_NORMAL,
};
if rasterization == RasterizationOptions::Bilevel {
options |= FT_LOAD_MONOCHROME
}
options
}
#[inline]
pub fn handle(&self) -> Option<Handle> {
<Self as Loader>::handle(self)
}
pub fn copy_font_data(&self) -> Option<Arc<Vec<u8>>> {
match self.font_data {
FontData::File(ref file) => Some(Arc::new((*file).to_vec())),
FontData::Memory(ref memory) => Some((*memory).clone()),
}
}
}
impl Clone for Font {
fn clone(&self) -> Font {
unsafe {
assert_eq!(FT_Reference_Face(self.freetype_face), 0);
Font {
freetype_face: self.freetype_face,
font_data: self.font_data.clone(),
}
}
}
}
impl Drop for Font {
fn drop(&mut self) {
unsafe {
if !self.freetype_face.is_null() {
assert_eq!(FT_Done_Face(self.freetype_face), 0);
}
}
}
}
impl Debug for Font {
fn fmt(&self, fmt: &mut Formatter) -> Result<(), fmt::Error> {
self.family_name().fmt(fmt)
}
}
impl Loader for Font {
type NativeFont = NativeFont;
#[inline]
fn from_bytes(font_data: Arc<Vec<u8>>, font_index: u32) -> Result<Self, FontLoadingError> {
Font::from_bytes(font_data, font_index)
}
#[inline]
fn from_file(file: &mut File, font_index: u32) -> Result<Font, FontLoadingError> {
Font::from_file(file, font_index)
}
#[inline]
fn analyze_bytes(font_data: Arc<Vec<u8>>) -> Result<FileType, FontLoadingError> {
Font::analyze_bytes(font_data)
}
fn analyze_file(file: &mut File) -> Result<FileType, FontLoadingError> {
Font::analyze_file(file)
}
#[inline]
fn native_font(&self) -> Self::NativeFont {
self.native_font()
}
#[inline]
unsafe fn from_native_font(native_font: Self::NativeFont) -> Self {
Font::from_native_font(native_font)
}
#[inline]
fn postscript_name(&self) -> Option<String> {
self.postscript_name()
}
#[inline]
fn full_name(&self) -> String {
self.full_name()
}
#[inline]
fn family_name(&self) -> String {
self.family_name()
}
#[inline]
fn is_monospace(&self) -> bool {
self.is_monospace()
}
#[inline]
fn properties(&self) -> Properties {
self.properties()
}
#[inline]
fn glyph_for_char(&self, character: char) -> Option<u32> {
self.glyph_for_char(character)
}
#[inline]
fn glyph_count(&self) -> u32 {
self.glyph_count()
}
#[inline]
fn outline<B>(&self, glyph_id: u32, hinting_mode: HintingOptions, path_builder: &mut B)
-> Result<(), GlyphLoadingError>
where B: PathBuilder {
self.outline(glyph_id, hinting_mode, path_builder)
}
#[inline]
fn typographic_bounds(&self, glyph_id: u32) -> Result<Rect<f32>, GlyphLoadingError> {
self.typographic_bounds(glyph_id)
}
#[inline]
fn advance(&self, glyph_id: u32) -> Result<Vector2D<f32>, GlyphLoadingError> {
self.advance(glyph_id)
}
#[inline]
fn origin(&self, origin: u32) -> Result<Point2D<f32>, GlyphLoadingError> {
self.origin(origin)
}
#[inline]
fn metrics(&self) -> Metrics {
self.metrics()
}
#[inline]
fn copy_font_data(&self) -> Option<Arc<Vec<u8>>> {
self.copy_font_data()
}
#[inline]
fn supports_hinting_options(&self, hinting_options: HintingOptions, for_rasterization: bool)
-> bool {
self.supports_hinting_options(hinting_options, for_rasterization)
}
#[inline]
fn rasterize_glyph(&self,
canvas: &mut Canvas,
glyph_id: u32,
point_size: f32,
origin: &Point2D<f32>,
hinting_options: HintingOptions,
rasterization_options: RasterizationOptions)
-> Result<(), GlyphLoadingError> {
self.rasterize_glyph(canvas,
glyph_id,
point_size,
origin,
hinting_options,
rasterization_options)
}
}
#[derive(Clone)]
enum FontData {
Memory(Arc<Vec<u8>>),
File(Arc<Mmap>),
}
impl Deref for FontData {
type Target = [u8];
fn deref(&self) -> &[u8] {
match *self {
FontData::File(ref mmap) => &***mmap,
FontData::Memory(ref data) => &***data,
}
}
}
unsafe fn setup_freetype_face(face: FT_Face) {
reset_freetype_face_char_size(face);
}
unsafe fn reset_freetype_face_char_size(face: FT_Face) {
let units_per_em = (*face).units_per_EM as i64;
if units_per_em > 0 {
assert_eq!(FT_Set_Char_Size(face, ((*face).units_per_EM as i64) << 6, 0, 0, 0), 0);
}
}
#[repr(C)]
struct FT_SfntName {
platform_id: FT_UShort,
encoding_id: FT_UShort,
language_id: FT_UShort,
name_id: FT_UShort,
string: *mut FT_Byte,
string_len: FT_UInt,
}
fn ft_fixed_26_6_to_f32(fixed: i64) -> f32 {
(fixed as f32) / 64.0
}
fn f32_to_ft_fixed_26_6(float: f32) -> i64 {
f32::round(float * 64.0) as i64
}
extern "C" {
fn FT_Get_Font_Format(face: FT_Face) -> *const c_char;
fn FT_Get_BDF_Property(face: FT_Face,
prop_name: *const c_char,
aproperty: *mut BDF_PropertyRec)
-> FT_Error;
fn FT_Get_PS_Font_Value(face: FT_Face,
key: u32,
idx: FT_UInt,
value: *mut c_void,
value_len: FT_Long)
-> FT_Long;
fn FT_Get_Sfnt_Name(face: FT_Face, idx: FT_UInt, aname: *mut FT_SfntName) -> FT_Error;
fn FT_Get_Sfnt_Name_Count(face: FT_Face) -> FT_UInt;
}
#[cfg(test)]
mod test {
use loaders::freetype::Font;
static PCF_FONT_PATH: &'static str = "resources/tests/times-roman-pcf/timR12.pcf";
static PCF_FONT_POSTSCRIPT_NAME: &'static str = "Times-Roman";
#[test]
fn get_pcf_postscript_name() {
let font = Font::from_path(PCF_FONT_PATH, 0).unwrap();
assert_eq!(font.postscript_name().unwrap(), PCF_FONT_POSTSCRIPT_NAME);
}
}