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Unify the android + linux font code folders. Fixes #3028.
This commit is contained in:
Glenn Watson
parent
1c0e51015f
commit
0442d8afca
9 changed files with 14 additions and 530 deletions
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@ -1,105 +0,0 @@
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#![allow(uppercase_variables)]
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extern crate freetype;
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extern crate fontconfig;
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use fontconfig::fontconfig::{FcChar8, FcResultMatch, FcSetSystem};
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use fontconfig::fontconfig::{
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FcConfigGetCurrent, FcConfigGetFonts, FcPatternGetString,
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FcPatternDestroy, FcFontSetDestroy,
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FcPatternCreate, FcPatternAddString,
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FcFontSetList, FcObjectSetCreate, FcObjectSetDestroy,
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FcObjectSetAdd, FcPatternGetInteger
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};
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use libc;
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use libc::{c_int, c_char};
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use std::ptr;
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use std::str;
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pub fn get_available_families(callback: |String|) {
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unsafe {
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let config = FcConfigGetCurrent();
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let fontSet = FcConfigGetFonts(config, FcSetSystem);
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for i in range(0, (*fontSet).nfont as int) {
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let font = (*fontSet).fonts.offset(i);
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let mut family: *mut FcChar8 = ptr::mut_null();
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let mut v: c_int = 0;
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let mut FC_FAMILY_C = "family".to_c_str();
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let FC_FAMILY = FC_FAMILY_C.as_mut_ptr();
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while FcPatternGetString(*font, FC_FAMILY, v, &mut family) == FcResultMatch {
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let family_name = str::raw::from_c_str(family as *const c_char);
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callback(family_name);
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v += 1;
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}
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}
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}
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}
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pub fn get_variations_for_family(family_name: &str, callback: |String|) {
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debug!("getting variations for {}", family_name);
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unsafe {
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let config = FcConfigGetCurrent();
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let mut font_set = FcConfigGetFonts(config, FcSetSystem);
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let font_set_array_ptr = &mut font_set;
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let pattern = FcPatternCreate();
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assert!(pattern.is_not_null());
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let mut FC_FAMILY_C = "family".to_c_str();
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let FC_FAMILY = FC_FAMILY_C.as_mut_ptr();
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let mut family_name_c = family_name.to_c_str();
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let family_name = family_name_c.as_mut_ptr();
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let ok = FcPatternAddString(pattern, FC_FAMILY, family_name as *mut FcChar8);
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assert!(ok != 0);
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let object_set = FcObjectSetCreate();
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assert!(object_set.is_not_null());
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let mut FC_FILE_C = "file".to_c_str();
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let FC_FILE = FC_FILE_C.as_mut_ptr();
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FcObjectSetAdd(object_set, FC_FILE);
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let mut FC_INDEX_C = "index".to_c_str();
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let FC_INDEX = FC_INDEX_C.as_mut_ptr();
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FcObjectSetAdd(object_set, FC_INDEX);
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let matches = FcFontSetList(config, font_set_array_ptr, 1, pattern, object_set);
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debug!("found {} variations", (*matches).nfont);
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for i in range(0, (*matches).nfont as int) {
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let font = (*matches).fonts.offset(i);
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let mut FC_FILE_C = "file".to_c_str();
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let FC_FILE = FC_FILE_C.as_mut_ptr();
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let mut file: *mut FcChar8 = ptr::mut_null();
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let file = if FcPatternGetString(*font, FC_FILE, 0, &mut file) == FcResultMatch {
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str::raw::from_c_str(file as *const libc::c_char)
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} else {
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fail!();
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};
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let mut FC_INDEX_C = "index".to_c_str();
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let FC_INDEX = FC_INDEX_C.as_mut_ptr();
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let mut index: libc::c_int = 0;
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let index = if FcPatternGetInteger(*font, FC_INDEX, 0, &mut index) == FcResultMatch {
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index
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} else {
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fail!();
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};
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debug!("variation file: {}", file);
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debug!("variation index: {}", index);
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callback(file);
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}
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FcFontSetDestroy(matches);
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FcPatternDestroy(pattern);
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FcObjectSetDestroy(object_set);
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}
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}
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pub fn get_last_resort_font_families() -> Vec<String> {
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vec!("Roboto".to_string())
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}
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@ -1,35 +0,0 @@
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use std::io;
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use std::io::File;
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/// Platform specific font representation for android.
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/// The identifier is an absolute path, and the bytes
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/// field is the loaded data that can be passed to
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/// freetype and azure directly.
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pub struct FontTemplateData {
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pub bytes: Vec<u8>,
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pub identifier: String,
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}
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impl FontTemplateData {
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pub fn new(identifier: &str, font_data: Option<Vec<u8>>) -> FontTemplateData {
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let bytes = match font_data {
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Some(bytes) => {
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bytes
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},
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None => {
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// TODO: Handle file load failure!
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let mut file = File::open_mode(&Path::new(identifier), io::Open, io::Read).unwrap();
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file.read_to_end().unwrap()
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},
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};
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FontTemplateData {
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bytes: bytes,
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identifier: identifier.to_string(),
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}
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}
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}
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@ -100,6 +100,7 @@ pub fn get_variations_for_family(family_name: &str, callback: |String|) {
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}
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}
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}
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}
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#[cfg(target_os="linux")]
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pub fn get_last_resort_font_families() -> Vec<String> {
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pub fn get_last_resort_font_families() -> Vec<String> {
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vec!(
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vec!(
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"Fira Sans".to_string(),
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"Fira Sans".to_string(),
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@ -107,3 +108,8 @@ pub fn get_last_resort_font_families() -> Vec<String> {
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"Arial".to_string()
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"Arial".to_string()
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)
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)
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}
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}
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#[cfg(target_os="android")]
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pub fn get_last_resort_font_families() -> Vec<String> {
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vec!("Roboto".to_string())
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}
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@ -1,296 +0,0 @@
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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extern crate freetype;
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use font::{FontHandleMethods, FontMetrics, FontTableMethods};
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use font::{FontTableTag, FractionalPixel};
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use servo_util::geometry::Au;
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use servo_util::geometry;
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use platform::font_context::FontContextHandle;
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use text::glyph::GlyphId;
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use text::util::{float_to_fixed, fixed_to_float};
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use style::computed_values::font_weight;
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use platform::font_template::FontTemplateData;
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use freetype::freetype::{FT_Get_Char_Index, FT_Get_Postscript_Name};
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use freetype::freetype::{FT_Load_Glyph, FT_Set_Char_Size};
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use freetype::freetype::{FT_Get_Kerning, FT_Get_Sfnt_Table};
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use freetype::freetype::{FT_New_Memory_Face, FT_Done_Face};
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use freetype::freetype::{FTErrorMethods, FT_F26Dot6, FT_Face, FT_FaceRec};
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use freetype::freetype::{FT_GlyphSlot, FT_Library, FT_Long, FT_ULong};
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use freetype::freetype::{FT_KERNING_DEFAULT, FT_STYLE_FLAG_ITALIC, FT_STYLE_FLAG_BOLD};
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use freetype::freetype::{FT_SizeRec, FT_UInt, FT_Size_Metrics, struct_FT_Vector_};
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use freetype::freetype::{ft_sfnt_os2};
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use freetype::tt_os2::TT_OS2;
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use std::mem;
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use std::ptr;
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use std::str;
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use sync::Arc;
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fn float_to_fixed_ft(f: f64) -> i32 {
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float_to_fixed(6, f)
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}
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fn fixed_to_float_ft(f: i32) -> f64 {
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fixed_to_float(6, f)
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}
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pub struct FontTable;
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impl FontTableMethods for FontTable {
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fn with_buffer(&self, _blk: |*const u8, uint|) {
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fail!()
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}
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}
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pub struct FontHandle {
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// The font binary. This must stay valid for the lifetime of the font,
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// if the font is created using FT_Memory_Face.
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pub font_data: Arc<FontTemplateData>,
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pub face: FT_Face,
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pub handle: FontContextHandle
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}
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#[unsafe_destructor]
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impl Drop for FontHandle {
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fn drop(&mut self) {
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assert!(self.face.is_not_null());
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unsafe {
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if !FT_Done_Face(self.face).succeeded() {
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fail!("FT_Done_Face failed");
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}
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}
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}
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}
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impl FontHandleMethods for FontHandle {
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fn new_from_template(fctx: &FontContextHandle,
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template: Arc<FontTemplateData>,
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pt_size: Option<f64>)
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-> Result<FontHandle, ()> {
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let ft_ctx: FT_Library = fctx.ctx.ctx;
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if ft_ctx.is_null() { return Err(()); }
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let bytes = &template.deref().bytes;
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let face_result = create_face_from_buffer(ft_ctx, bytes.as_ptr(), bytes.len(), pt_size);
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// TODO: this could be more simply written as result::chain
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// and moving buf into the struct ctor, but cant' move out of
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// captured binding.
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return match face_result {
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Ok(face) => {
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let handle = FontHandle {
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face: face,
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font_data: template.clone(),
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handle: fctx.clone()
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};
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Ok(handle)
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}
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Err(()) => Err(())
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};
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fn create_face_from_buffer(lib: FT_Library, cbuf: *const u8, cbuflen: uint, pt_size: Option<f64>)
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-> Result<FT_Face, ()> {
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unsafe {
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let mut face: FT_Face = ptr::mut_null();
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let face_index = 0 as FT_Long;
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let result = FT_New_Memory_Face(lib, cbuf, cbuflen as FT_Long,
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face_index, &mut face);
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if !result.succeeded() || face.is_null() {
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return Err(());
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}
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match pt_size {
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Some(s) => {
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match FontHandle::set_char_size(face, s) {
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Ok(_) => Ok(face),
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Err(_) => Err(()),
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}
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}
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None => Ok(face),
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}
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}
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}
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}
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fn get_template(&self) -> Arc<FontTemplateData> {
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self.font_data.clone()
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}
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fn family_name(&self) -> String {
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unsafe { str::raw::from_c_str(&*(*self.face).family_name) }
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}
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fn face_name(&self) -> String {
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unsafe { str::raw::from_c_str(&*FT_Get_Postscript_Name(self.face)) }
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}
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fn is_italic(&self) -> bool {
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unsafe { (*self.face).style_flags & FT_STYLE_FLAG_ITALIC != 0 }
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}
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fn boldness(&self) -> font_weight::T {
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let default_weight = font_weight::Weight400;
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if unsafe { (*self.face).style_flags & FT_STYLE_FLAG_BOLD == 0 } {
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default_weight
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} else {
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unsafe {
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let os2 = FT_Get_Sfnt_Table(self.face, ft_sfnt_os2) as *mut TT_OS2;
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let valid = os2.is_not_null() && (*os2).version != 0xffff;
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if valid {
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let weight =(*os2).usWeightClass;
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match weight {
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1 | 100..199 => font_weight::Weight100,
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2 | 200..299 => font_weight::Weight200,
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3 | 300..399 => font_weight::Weight300,
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4 | 400..499 => font_weight::Weight400,
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5 | 500..599 => font_weight::Weight500,
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6 | 600..699 => font_weight::Weight600,
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7 | 700..799 => font_weight::Weight700,
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8 | 800..899 => font_weight::Weight800,
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9 | 900..999 => font_weight::Weight900,
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_ => default_weight
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}
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} else {
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default_weight
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}
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}
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}
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}
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fn glyph_index(&self,
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codepoint: char) -> Option<GlyphId> {
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assert!(self.face.is_not_null());
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unsafe {
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let idx = FT_Get_Char_Index(self.face, codepoint as FT_ULong);
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return if idx != 0 as FT_UInt {
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Some(idx as GlyphId)
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} else {
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debug!("Invalid codepoint: {}", codepoint);
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None
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};
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}
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}
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fn glyph_h_kerning(&self, first_glyph: GlyphId, second_glyph: GlyphId)
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-> FractionalPixel {
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assert!(self.face.is_not_null());
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let mut delta = struct_FT_Vector_ { x: 0, y: 0 };
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unsafe {
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FT_Get_Kerning(self.face, first_glyph, second_glyph, FT_KERNING_DEFAULT, &mut delta);
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}
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fixed_to_float_ft(delta.x as i32)
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}
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fn glyph_h_advance(&self,
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glyph: GlyphId) -> Option<FractionalPixel> {
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assert!(self.face.is_not_null());
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unsafe {
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let res = FT_Load_Glyph(self.face, glyph as FT_UInt, 0);
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if res.succeeded() {
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let void_glyph = (*self.face).glyph;
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let slot: FT_GlyphSlot = mem::transmute(void_glyph);
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assert!(slot.is_not_null());
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debug!("metrics: {:?}", (*slot).metrics);
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let advance = (*slot).metrics.horiAdvance;
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debug!("h_advance for {} is {}", glyph, advance);
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let advance = advance as i32;
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return Some(fixed_to_float_ft(advance) as FractionalPixel);
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} else {
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debug!("Unable to load glyph {}. reason: {}", glyph, res);
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return None;
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}
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}
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}
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fn get_metrics(&self) -> FontMetrics {
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|
||||||
/* TODO(Issue #76): complete me */
|
|
||||||
let face = self.get_face_rec();
|
|
||||||
|
|
||||||
let underline_size = self.font_units_to_au(face.underline_thickness as f64);
|
|
||||||
let underline_offset = self.font_units_to_au(face.underline_position as f64);
|
|
||||||
let em_size = self.font_units_to_au(face.units_per_EM as f64);
|
|
||||||
let ascent = self.font_units_to_au(face.ascender as f64);
|
|
||||||
let descent = self.font_units_to_au(face.descender as f64);
|
|
||||||
let max_advance = self.font_units_to_au(face.max_advance_width as f64);
|
|
||||||
|
|
||||||
// 'leading' is supposed to be the vertical distance between two baselines,
|
|
||||||
// reflected by the height attibute in freetype. On OS X (w/ CTFont),
|
|
||||||
// leading represents the distance between the bottom of a line descent to
|
|
||||||
// the top of the next line's ascent or: (line_height - ascent - descent),
|
|
||||||
// see http://stackoverflow.com/a/5635981 for CTFont implementation.
|
|
||||||
// Convert using a formular similar to what CTFont returns for consistency.
|
|
||||||
let height = self.font_units_to_au(face.height as f64);
|
|
||||||
let leading = height - (ascent + descent);
|
|
||||||
|
|
||||||
let mut strikeout_size = geometry::from_pt(0.0);
|
|
||||||
let mut strikeout_offset = geometry::from_pt(0.0);
|
|
||||||
let mut x_height = geometry::from_pt(0.0);
|
|
||||||
unsafe {
|
|
||||||
let os2 = FT_Get_Sfnt_Table(face, ft_sfnt_os2) as *mut TT_OS2;
|
|
||||||
let valid = os2.is_not_null() && (*os2).version != 0xffff;
|
|
||||||
if valid {
|
|
||||||
strikeout_size = self.font_units_to_au((*os2).yStrikeoutSize as f64);
|
|
||||||
strikeout_offset = self.font_units_to_au((*os2).yStrikeoutPosition as f64);
|
|
||||||
x_height = self.font_units_to_au((*os2).sxHeight as f64);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
let metrics = FontMetrics {
|
|
||||||
underline_size: underline_size,
|
|
||||||
underline_offset: underline_offset,
|
|
||||||
strikeout_size: strikeout_size,
|
|
||||||
strikeout_offset: strikeout_offset,
|
|
||||||
leading: leading,
|
|
||||||
x_height: x_height,
|
|
||||||
em_size: em_size,
|
|
||||||
ascent: ascent,
|
|
||||||
descent: -descent, // linux font's seem to use the opposite sign from mac
|
|
||||||
max_advance: max_advance
|
|
||||||
};
|
|
||||||
|
|
||||||
debug!("Font metrics (@{:f} pt): {:?}", geometry::to_pt(em_size), metrics);
|
|
||||||
return metrics;
|
|
||||||
}
|
|
||||||
|
|
||||||
fn get_table_for_tag(&self, _: FontTableTag) -> Option<FontTable> {
|
|
||||||
None
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
impl<'a> FontHandle {
|
|
||||||
fn set_char_size(face: FT_Face, pt_size: f64) -> Result<(), ()>{
|
|
||||||
let char_width = float_to_fixed_ft(pt_size) as FT_F26Dot6;
|
|
||||||
let char_height = float_to_fixed_ft(pt_size) as FT_F26Dot6;
|
|
||||||
let h_dpi = 72;
|
|
||||||
let v_dpi = 72;
|
|
||||||
|
|
||||||
unsafe {
|
|
||||||
let result = FT_Set_Char_Size(face, char_width, char_height, h_dpi, v_dpi);
|
|
||||||
if result.succeeded() { Ok(()) } else { Err(()) }
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
fn get_face_rec(&'a self) -> &'a mut FT_FaceRec {
|
|
||||||
unsafe {
|
|
||||||
&mut (*self.face)
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
fn font_units_to_au(&self, value: f64) -> Au {
|
|
||||||
let face = self.get_face_rec();
|
|
||||||
|
|
||||||
// face.size is a *c_void in the bindings, presumably to avoid
|
|
||||||
// recursive structural types
|
|
||||||
let size: &FT_SizeRec = unsafe { mem::transmute(&(*face.size)) };
|
|
||||||
let metrics: &FT_Size_Metrics = &(*size).metrics;
|
|
||||||
|
|
||||||
let em_size = face.units_per_EM as f64;
|
|
||||||
let x_scale = (metrics.x_ppem as f64) / em_size as f64;
|
|
||||||
|
|
||||||
// If this isn't true then we're scaling one of the axes wrong
|
|
||||||
assert!(metrics.x_ppem == metrics.y_ppem);
|
|
||||||
|
|
||||||
return geometry::from_frac_px(value * x_scale);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
@ -1,82 +0,0 @@
|
||||||
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
||||||
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
||||||
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
||||||
|
|
||||||
use freetype::freetype::FTErrorMethods;
|
|
||||||
use freetype::freetype::FT_Add_Default_Modules;
|
|
||||||
use freetype::freetype::FT_Done_FreeType;
|
|
||||||
use freetype::freetype::FT_Library;
|
|
||||||
use freetype::freetype::FT_Memory;
|
|
||||||
use freetype::freetype::FT_New_Library;
|
|
||||||
use freetype::freetype::struct_FT_MemoryRec_;
|
|
||||||
|
|
||||||
use std::ptr;
|
|
||||||
use std::rc::Rc;
|
|
||||||
|
|
||||||
use libc;
|
|
||||||
use libc::{c_void, c_long, size_t, malloc};
|
|
||||||
use std::mem;
|
|
||||||
|
|
||||||
extern fn ft_alloc(_mem: FT_Memory, size: c_long) -> *mut c_void {
|
|
||||||
unsafe {
|
|
||||||
let ptr = libc::malloc(size as size_t);
|
|
||||||
ptr as *mut c_void
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
extern fn ft_free(_mem: FT_Memory, block: *mut c_void) {
|
|
||||||
unsafe {
|
|
||||||
libc::free(block);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
extern fn ft_realloc(_mem: FT_Memory, _cur_size: c_long, new_size: c_long, block: *mut c_void) -> *mut c_void {
|
|
||||||
unsafe {
|
|
||||||
let ptr = libc::realloc(block, new_size as size_t);
|
|
||||||
ptr as *mut c_void
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
#[deriving(Clone)]
|
|
||||||
pub struct FreeTypeLibraryHandle {
|
|
||||||
pub ctx: FT_Library,
|
|
||||||
}
|
|
||||||
|
|
||||||
#[deriving(Clone)]
|
|
||||||
pub struct FontContextHandle {
|
|
||||||
pub ctx: Rc<FreeTypeLibraryHandle>,
|
|
||||||
}
|
|
||||||
|
|
||||||
impl Drop for FreeTypeLibraryHandle {
|
|
||||||
fn drop(&mut self) {
|
|
||||||
assert!(self.ctx.is_not_null());
|
|
||||||
unsafe { FT_Done_FreeType(self.ctx) };
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
impl FontContextHandle {
|
|
||||||
pub fn new() -> FontContextHandle {
|
|
||||||
unsafe {
|
|
||||||
|
|
||||||
let ptr = libc::malloc(mem::size_of::<struct_FT_MemoryRec_>() as size_t);
|
|
||||||
let allocator: &mut struct_FT_MemoryRec_ = mem::transmute(ptr);
|
|
||||||
ptr::write(allocator, struct_FT_MemoryRec_ {
|
|
||||||
user: ptr::mut_null(),
|
|
||||||
alloc: ft_alloc,
|
|
||||||
free: ft_free,
|
|
||||||
realloc: ft_realloc,
|
|
||||||
});
|
|
||||||
|
|
||||||
let mut ctx: FT_Library = ptr::mut_null();
|
|
||||||
|
|
||||||
let result = FT_New_Library(ptr as FT_Memory, &mut ctx);
|
|
||||||
if !result.succeeded() { fail!("Unable to initialize FreeType library"); }
|
|
||||||
|
|
||||||
FT_Add_Default_Modules(ctx);
|
|
||||||
|
|
||||||
FontContextHandle {
|
|
||||||
ctx: Rc::new(FreeTypeLibraryHandle { ctx: ctx }),
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
@ -2,12 +2,16 @@
|
||||||
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
||||||
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
||||||
|
|
||||||
#[cfg(target_os="linux")] pub use platform::linux::{font, font_context, font_list, font_template};
|
#[cfg(target_os="linux")]
|
||||||
#[cfg(target_os="macos")] pub use platform::macos::{font, font_context, font_list, font_template};
|
#[cfg(target_os="android")]
|
||||||
#[cfg(target_os="android")] pub use platform::android::{font, font_context, font_list, font_template};
|
pub use platform::freetype::{font, font_context, font_list, font_template};
|
||||||
|
|
||||||
|
#[cfg(target_os="macos")]
|
||||||
|
pub use platform::macos::{font, font_context, font_list, font_template};
|
||||||
|
|
||||||
#[cfg(target_os="linux")]
|
#[cfg(target_os="linux")]
|
||||||
pub mod linux {
|
#[cfg(target_os="android")]
|
||||||
|
pub mod freetype {
|
||||||
pub mod font;
|
pub mod font;
|
||||||
pub mod font_context;
|
pub mod font_context;
|
||||||
pub mod font_list;
|
pub mod font_list;
|
||||||
|
|
@ -21,11 +25,3 @@ pub mod macos {
|
||||||
pub mod font_list;
|
pub mod font_list;
|
||||||
pub mod font_template;
|
pub mod font_template;
|
||||||
}
|
}
|
||||||
|
|
||||||
#[cfg(target_os="android")]
|
|
||||||
pub mod android {
|
|
||||||
pub mod font;
|
|
||||||
pub mod font_context;
|
|
||||||
pub mod font_list;
|
|
||||||
pub mod font_template;
|
|
||||||
}
|
|
||||||
|
|
|
||||||
Loading…
Add table
Add a link
Reference in a new issue