use core::fmt;
use core::marker::PhantomData;
use Nul;
use {ffi, FtResult, GlyphSlot, Matrix, Vector};
#[repr(u32)]
#[derive(Copy, Clone)]
pub enum KerningMode {
KerningDefault = ffi::FT_KERNING_DEFAULT,
KerningUnfitted = ffi::FT_KERNING_UNFITTED,
KerningUnscaled = ffi::FT_KERNING_UNSCALED,
}
bitflags! {
pub struct LoadFlag: i32 {
const DEFAULT = ::ffi::FT_LOAD_DEFAULT;
const NO_SCALE = ::ffi::FT_LOAD_NO_SCALE;
const NO_HINTING = ::ffi::FT_LOAD_NO_HINTING;
const RENDER = ::ffi::FT_LOAD_RENDER;
const NO_BITMAP = ::ffi::FT_LOAD_NO_BITMAP;
const VERTICAL_LAYOUT = ::ffi::FT_LOAD_VERTICAL_LAYOUT;
const FORCE_AUTOHINT = ::ffi::FT_LOAD_FORCE_AUTOHINT;
const CROP_BITMAP = ::ffi::FT_LOAD_CROP_BITMAP;
const PEDANTIC = ::ffi::FT_LOAD_PEDANTIC;
const IGNORE_GLOBAL_ADVANCE_WITH = ::ffi::FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH;
const NO_RECURSE = ::ffi::FT_LOAD_NO_RECURSE;
const IGNORE_TRANSFORM = ::ffi::FT_LOAD_IGNORE_TRANSFORM;
const MONOCHROME = ::ffi::FT_LOAD_MONOCHROME;
const LINEAR_DESIGN = ::ffi::FT_LOAD_LINEAR_DESIGN;
const NO_AUTOHINT = ::ffi::FT_LOAD_NO_AUTOHINT;
const TARGET_NORMAL = ::ffi::FT_LOAD_TARGET_NORMAL;
const TARGET_LIGHT = ::ffi::FT_LOAD_TARGET_LIGHT;
const TARGET_MONO = ::ffi::FT_LOAD_TARGET_MONO;
const TARGET_LCD = ::ffi::FT_LOAD_TARGET_LCD;
const TARGET_LCD_V = ::ffi::FT_LOAD_TARGET_LCD_V;
const COLOR = ::ffi::FT_LOAD_COLOR;
}
}
bitflags! {
pub struct StyleFlag: ffi::FT_Long {
const BOLD = ::ffi::FT_STYLE_FLAG_BOLD;
const ITALIC = ::ffi::FT_STYLE_FLAG_ITALIC;
}
}
#[derive(Eq, PartialEq, Hash)]
pub struct Face<'a> {
library_raw: ffi::FT_Library,
raw: ffi::FT_Face,
glyph: GlyphSlot,
_phantom: PhantomData<&'a ()>
}
impl<'a> ::fallible::TryClone for Face<'a> {
type Error = ::error::Error;
fn try_clone(&self) -> FtResult<Self> { unsafe {
::error::from_ftret(ffi::FT_Reference_Library(self.library_raw))?;
::error::from_ftret(ffi::FT_Reference_Face(self.raw))?;
Ok(Face { ..*self })
} }
}
impl<'a> Face<'a> {
pub unsafe fn from_raw(library_raw: ffi::FT_Library, raw: ffi::FT_Face) -> Self {
ffi::FT_Reference_Library(library_raw);
Face {
library_raw, raw,
glyph: GlyphSlot::from_raw(library_raw, (*raw).glyph),
_phantom: PhantomData
}
}
pub fn attach_file(&self, filepathname: &str) -> FtResult<()> {
::error::from_ftret(unsafe { ffi::FT_Attach_File(self.raw, filepathname.as_ptr() as *const _) })
}
pub fn reference(&self) -> FtResult<()> {
::error::from_ftret(unsafe { ffi::FT_Reference_Face(self.raw) })
}
pub fn set_char_size(&self, char_width: isize, char_height: isize, horz_resolution: u32,
vert_resolution: u32) -> FtResult<()> {
::error::from_ftret(unsafe {
ffi::FT_Set_Char_Size(self.raw, char_width as ffi::FT_F26Dot6,
char_height as ffi::FT_F26Dot6, horz_resolution,
vert_resolution)
})
}
pub fn set_pixel_sizes(&self, pixel_width: u32, pixel_height: u32) -> FtResult<()> {
::error::from_ftret(unsafe { ffi::FT_Set_Pixel_Sizes(self.raw, pixel_width, pixel_height) })
}
pub fn load_glyph(&self, glyph_index: u32, load_flags: LoadFlag) -> FtResult<()> {
::error::from_ftret(unsafe { ffi::FT_Load_Glyph(self.raw, glyph_index, load_flags.bits) })
}
pub fn load_char(&self, char_code: usize, load_flags: LoadFlag) -> FtResult<()> {
::error::from_ftret(unsafe { ffi::FT_Load_Char(self.raw, char_code as ffi::FT_ULong, load_flags.bits) })
}
pub fn set_transform(&self, matrix: &mut Matrix, delta: &mut Vector) {
unsafe { ffi::FT_Set_Transform(self.raw, matrix, delta); }
}
pub fn get_char_index(&self, charcode: usize) -> u32 {
unsafe { ffi::FT_Get_Char_Index(self.raw, charcode as ffi::FT_ULong) }
}
pub fn get_kerning(&self, left_char_index: u32, right_char_index: u32, kern_mode: KerningMode)
-> FtResult<Vector> {
let mut vec = Vector { x: 0, y: 0 };
::error::from_ftret(unsafe {
ffi::FT_Get_Kerning(self.raw, left_char_index, right_char_index,
kern_mode as u32, &mut vec)
})?;
Ok(vec)
}
#[inline(always)]
pub fn glyph(&self) -> &GlyphSlot { &self.glyph }
#[inline(always)]
pub fn has_horizontal(&self) -> bool {
ffi::FT_HAS_HORIZONTAL(self.raw)
}
#[inline(always)]
pub fn has_vertical(&self) -> bool {
ffi::FT_HAS_VERTICAL(self.raw)
}
#[inline(always)]
pub fn has_kerning(&self) -> bool {
ffi::FT_HAS_KERNING(self.raw)
}
#[inline(always)]
pub fn is_scalable(&self) -> bool {
ffi::FT_IS_SCALABLE(self.raw)
}
#[inline(always)]
pub fn is_sfnt(&self) -> bool {
ffi::FT_IS_SFNT(self.raw)
}
#[inline(always)]
pub fn is_fixed_width(&self) -> bool {
ffi::FT_IS_FIXED_WIDTH(self.raw)
}
#[inline(always)]
pub fn has_fixed_sizes(&self) -> bool {
ffi::FT_HAS_FIXED_SIZES(self.raw)
}
#[inline(always)]
pub fn has_glyph_names(&self) -> bool {
ffi::FT_HAS_GLYPH_NAMES(self.raw)
}
#[inline(always)]
pub fn is_cid_keyed(&self) -> bool {
ffi::FT_IS_CID_KEYED(self.raw)
}
#[inline(always)]
pub fn is_tricky(&self) -> bool {
ffi::FT_IS_TRICKY(self.raw)
}
#[inline(always)]
pub fn has_color(&self) -> bool {
ffi::FT_HAS_COLOR(self.raw)
}
#[inline(always)]
pub fn raw(&self) -> &ffi::FT_FaceRec {
unsafe { &*self.raw }
}
#[inline(always)]
pub fn raw_mut(&mut self) -> &mut ffi::FT_FaceRec {
unsafe { &mut *self.raw }
}
#[inline(always)]
pub fn ascender(&self) -> ffi::FT_Short {
unsafe { (*self.raw).ascender }
}
#[inline(always)]
pub fn descender(&self) -> ffi::FT_Short {
unsafe { (*self.raw).descender }
}
#[inline(always)]
pub fn em_size(&self) -> ffi::FT_Short {
unsafe { (*self.raw).units_per_EM as i16 }
}
#[inline(always)]
pub fn height(&self) -> ffi::FT_Short {
unsafe { (*self.raw).height }
}
#[inline(always)]
pub fn max_advance_width(&self) -> ffi::FT_Short {
unsafe { (*self.raw).max_advance_width }
}
#[inline(always)]
pub fn max_advance_height(&self) -> ffi::FT_Short {
unsafe { (*self.raw).max_advance_height }
}
#[inline(always)]
pub fn underline_position(&self) -> ffi::FT_Short {
unsafe { (*self.raw).underline_position }
}
#[inline(always)]
pub fn underline_thickness(&self) -> ffi::FT_Short {
unsafe { (*self.raw).underline_thickness }
}
#[inline(always)]
pub fn num_faces(&self) -> i16 { unsafe { (*self.raw).num_faces as i16 } }
pub fn family_name(&self) -> Option<&Nul<u8>> {
unsafe { ((*self.raw).family_name as *mut u8).as_ref() }
.map(|p| unsafe { Nul::new_unchecked(p) })
}
pub fn style_name(&self) -> Option<&Nul<u8>> {
unsafe { ((*self.raw).style_name as *mut u8).as_ref() }
.map(|p| unsafe { Nul::new_unchecked(p) })
}
pub fn style_flags(&self) -> StyleFlag {
StyleFlag::from_bits_truncate(unsafe { (*self.raw).style_flags })
}
pub fn size_metrics(&self) -> Option<ffi::FT_Size_Metrics> {
if self.raw.is_null() {
None
} else {
let size = unsafe { (*self.raw).size };
if size.is_null() {
None
} else {
Some(unsafe { (*size).metrics })
}
}
}
pub fn postscript_name(&self) -> Option<&Nul<u8>> {
unsafe { (ffi::FT_Get_Postscript_Name(self.raw) as *mut u8).as_ref() }
.map(|p| unsafe { Nul::new_unchecked(p) })
}
}
impl<'a> fmt::Debug for Face<'a> {
fn fmt(&self, form: &mut fmt::Formatter) -> fmt::Result {
let name = self.style_name()
.and_then(|s| ::core::str::from_utf8(&s[..]).ok())
.unwrap_or("[unknown name]");
form.write_str("Font Face: ")?;
form.write_str(&name[..])
}
}
impl<'a> Drop for Face<'a> {
fn drop(&mut self) { unsafe {
::error::from_ftret(ffi::FT_Done_Face(self.raw)).expect("Failed to drop face");
::error::from_ftret(ffi::FT_Done_Library(self.library_raw)).expect("Failed to drop library");
} }
}