Patrick Walton
380 lines
15 KiB
Rust
380 lines
15 KiB
Rust
extern mod core_foundation;
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extern mod core_graphics;
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use font_descriptor::{CTFontDescriptor, CTFontDescriptorRef, CTFontOrientation};
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use font_descriptor::{CTFontSymbolicTraits, CTFontTraits, SymbolicTraitAccessors, TraitAccessors};
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use core::libc::c_uint;
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use core_foundation::array::{CFArrayRef};
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use core_foundation::base::{AbstractCFTypeRef, CFIndex, CFOptionFlags, CFTypeID, CFTypeRef};
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use core_foundation::base::{CFWrapper};
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use core_foundation::data::{CFData, CFDataRef};
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use core_foundation::dictionary::{CFDictionaryRef, UntypedCFDictionary};
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use core_foundation::string::{CFStringGetTypeID, CFString, CFStringRef, UniChar};
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use core_graphics::base::{CGAffineTransform, CGFloat};
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use core_graphics::font::{CGGlyph, CGFont, CGFontRef};
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use core_graphics::geometry::{CGRect, CGSize};
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pub type CTFontUIFontType = u32;
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// kCTFontNoFontType: CTFontUIFontType = -1;
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pub const kCTFontUserFontType: CTFontUIFontType = 0;
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pub const kCTFontUserFixedPitchFontType: CTFontUIFontType = 1;
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pub const kCTFontSystemFontType: CTFontUIFontType = 2;
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pub const kCTFontEmphasizedSystemFontType: CTFontUIFontType = 3;
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pub const kCTFontSmallSystemFontType: CTFontUIFontType = 4;
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pub const kCTFontSmallEmphasizedSystemFontType: CTFontUIFontType = 5;
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pub const kCTFontMiniSystemFontType: CTFontUIFontType = 6;
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pub const kCTFontMiniEmphasizedSystemFontType: CTFontUIFontType = 7;
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pub const kCTFontViewsFontType: CTFontUIFontType = 8;
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pub const kCTFontApplicationFontType: CTFontUIFontType = 9;
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pub const kCTFontLabelFontType: CTFontUIFontType = 10;
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pub const kCTFontMenuTitleFontType: CTFontUIFontType = 11;
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pub const kCTFontMenuItemFontType: CTFontUIFontType = 12;
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pub const kCTFontMenuItemMarkFontType: CTFontUIFontType = 13;
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pub const kCTFontMenuItemCmdKeyFontType: CTFontUIFontType = 14;
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pub const kCTFontWindowTitleFontType: CTFontUIFontType = 15;
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pub const kCTFontPushButtonFontType: CTFontUIFontType = 16;
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pub const kCTFontUtilityWindowTitleFontType: CTFontUIFontType = 17;
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pub const kCTFontAlertHeaderFontType: CTFontUIFontType = 18;
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pub const kCTFontSystemDetailFontType: CTFontUIFontType = 19;
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pub const kCTFontEmphasizedSystemDetailFontType: CTFontUIFontType = 20;
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pub const kCTFontToolbarFontType: CTFontUIFontType = 21;
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pub const kCTFontSmallToolbarFontType: CTFontUIFontType = 22;
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pub const kCTFontMessageFontType: CTFontUIFontType = 23;
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pub const kCTFontPaletteFontType: CTFontUIFontType = 24;
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pub const kCTFontToolTipFontType: CTFontUIFontType = 25;
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pub const kCTFontControlContentFontType: CTFontUIFontType = 26;
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pub type CTFontTableTag = u32;
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// TODO: create bindings for enum with 'chars' values
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pub type CTFontTableOptions = u32;
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pub const kCTFontTableOptionsNoOptions: CTFontTableOptions = 0;
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pub const kCTFontTableOptionsExcludeSynthetic: CTFontTableOptions = (1 << 0);
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pub type CTFontOptions = CFOptionFlags;
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pub const kCTFontOptionsDefault: CTFontOptions = 0;
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pub const kCTFontOptionsPreventAutoActivation: CTFontOptions = (1 << 0);
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pub const kCTFontOptionsPreferSystemFont: CTFontOptions = (1 << 2);
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struct __CTFont { private: () }
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pub type CTFontRef = *__CTFont;
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impl CTFontRef : AbstractCFTypeRef {
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pure fn as_type_ref(&self) -> CFTypeRef { *self as CFTypeRef }
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static pure fn type_id() -> CFTypeID unsafe { CTFontGetTypeID() }
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}
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pub type CTFont = CFWrapper<CTFontRef, (), ()>;
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pub trait CTFontMethods {
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// Creation methods (statics below)
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fn copy_to_CGFont(&const self) -> CGFont;
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fn clone_with_font_size(&const self, size: float) -> CTFont;
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// Names
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pure fn family_name() -> ~str;
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pure fn face_name() -> ~str;
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pure fn unique_name() -> ~str;
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pure fn postscript_name() -> ~str;
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// Properties
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pure fn all_traits() -> CTFontTraits;
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// Font metrics
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pure fn ascent() -> CGFloat;
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pure fn descent() -> CGFloat;
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pure fn underline_thickness() -> CGFloat;
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pure fn underline_position() -> CGFloat;
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pure fn bounding_box() -> CGRect;
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pure fn leading() -> CGFloat;
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pure fn x_height() -> CGFloat;
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pure fn pt_size() -> CGFloat;
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fn get_glyphs_for_characters(characters: *UniChar, glyphs: *CGGlyph, count: CFIndex) -> bool;
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fn get_advances_for_glyphs(orientation: CTFontOrientation, glyphs: *CGGlyph, advances: *CGSize, count: CFIndex) -> float;
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fn get_font_table(tag: u32) -> Option<CFData>;
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}
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pub fn new_from_CGFont(cgfont: &CGFont, pt_size: float) -> CTFont {
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let result = CTFontCreateWithGraphicsFont(*cgfont.borrow_ref(), pt_size as CGFloat, ptr::null(), ptr::null());
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CFWrapper::wrap_owned(result)
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}
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pub fn new_from_descriptor(desc: &CTFontDescriptor, pt_size: float) -> CTFont {
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let result = CTFontCreateWithFontDescriptor(*desc.borrow_ref(), pt_size as CGFloat, ptr::null());
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CFWrapper::wrap_owned(result)
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}
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pub fn new_from_name(name: ~str, pt_size: float) -> Result<CTFont, ()> {
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let cfname = CFString::new(name);
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let result = CTFontCreateWithName(*cfname.borrow_ref(), pt_size as CGFloat, ptr::null());
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if result.is_null() { return Err(()); }
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return Ok(move CFWrapper::wrap_owned(result));
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}
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priv trait CTFontMethodsPrivate {
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pure fn symbolic_traits() -> CTFontSymbolicTraits;
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}
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pub impl CTFont: CTFontMethodsPrivate {
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// Properties
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priv pure fn symbolic_traits() -> CTFontSymbolicTraits unsafe {
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CTFontGetSymbolicTraits(self.obj)
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}
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}
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pub impl CTFont : CTFontMethods {
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// Creation methods
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fn copy_to_CGFont(&const self) -> CGFont {
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let value = CTFontCopyGraphicsFont(self.obj, ptr::null());
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CFWrapper::wrap_owned(value)
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}
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fn clone_with_font_size(&const self, size: float) -> CTFont {
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let result = CTFontCreateCopyWithAttributes(self.obj, size as CGFloat, ptr::null(), ptr::null());
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CFWrapper::wrap_owned(result)
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}
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// Names
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pure fn family_name() -> ~str unsafe {
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let value = get_string_by_name_key(&self, kCTFontFamilyNameKey);
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return move option::expect(move value, ~"Fonts should always have a family name.");
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}
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pure fn face_name() -> ~str unsafe {
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let value = get_string_by_name_key(&self, kCTFontSubFamilyNameKey);
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return move option::expect(move value, ~"Fonts should always have a face name.");
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}
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pure fn unique_name() -> ~str unsafe {
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let value = get_string_by_name_key(&self, kCTFontUniqueNameKey);
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return move option::expect(move value, ~"Fonts should always have a unique name.");
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}
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pure fn postscript_name() -> ~str unsafe {
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let value = get_string_by_name_key(&self, kCTFontPostScriptNameKey);
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return move option::expect(move value, ~"Fonts should always have a PostScript name.");
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}
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pure fn all_traits() -> CTFontTraits unsafe {
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let result = CTFontCopyTraits(self.obj);
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CFWrapper::wrap_owned(result)
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}
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// Font metrics
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pure fn ascent() -> CGFloat unsafe {
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CTFontGetAscent(self.obj)
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}
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pure fn descent() -> CGFloat unsafe {
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CTFontGetDescent(self.obj)
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}
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pure fn underline_thickness() -> CGFloat unsafe {
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CTFontGetUnderlineThickness(self.obj)
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}
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pure fn underline_position() -> CGFloat unsafe {
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CTFontGetUnderlinePosition(self.obj)
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}
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pure fn bounding_box() -> CGRect unsafe {
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CTFontGetBoundingBox(self.obj)
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}
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pure fn leading() -> CGFloat unsafe {
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CTFontGetLeading(self.obj)
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}
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pure fn x_height() -> CGFloat unsafe {
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CTFontGetXHeight(self.obj)
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}
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pure fn pt_size() -> CGFloat unsafe {
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CTFontGetSize(self.obj)
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}
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fn get_glyphs_for_characters(characters: *UniChar, glyphs: *CGGlyph, count: CFIndex) -> bool unsafe {
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CTFontGetGlyphsForCharacters(self.obj, characters, glyphs, count)
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}
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fn get_advances_for_glyphs(orientation: CTFontOrientation, glyphs: *CGGlyph, advances: *CGSize, count: CFIndex) -> float {
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CTFontGetAdvancesForGlyphs(self.obj, orientation, glyphs, advances, count) as float
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}
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fn get_font_table(tag: u32) -> Option<CFData> {
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let result = CTFontCopyTable(self.obj, tag as CTFontTableTag, kCTFontTableOptionsExcludeSynthetic);
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return match result.is_null() {
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true => None,
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false => Some(CFWrapper::wrap_owned(result)),
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}
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}
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}
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// Helper methods
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priv fn get_string_by_name_key(font: &CTFont, name_key: CFStringRef) -> Option<~str> {
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let result = CTFontCopyName(*font.borrow_ref(), name_key);
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if result.is_null() { return None; }
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return Some(CFWrapper::wrap_owned(result).to_str());
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}
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pub fn debug_font_names(font: &CTFont) {
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fn get_key(font: &CTFont, key: CFStringRef) -> ~str {
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option::unwrap(move get_string_by_name_key(font, key))
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}
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io::println(fmt!("kCTFontFamilyNameKey: %s", get_key(font, kCTFontFamilyNameKey)));
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io::println(fmt!("kCTFontSubFamilyNameKey: %s", get_key(font, kCTFontSubFamilyNameKey)));
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io::println(fmt!("kCTFontStyleNameKey: %s", get_key(font, kCTFontStyleNameKey)));
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io::println(fmt!("kCTFontUniqueNameKey: %s", get_key(font, kCTFontUniqueNameKey)));
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io::println(fmt!("kCTFontFullNameKey: %s", get_key(font, kCTFontFullNameKey)));
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io::println(fmt!("kCTFontPostScriptNameKey: %s", get_key(font, kCTFontPostScriptNameKey)));
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}
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pub fn debug_font_traits(font: &CTFont) {
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let sym = font.symbolic_traits();
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io::println(fmt!("kCTFontItalicTrait: %b", sym.is_italic()));
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io::println(fmt!("kCTFontBoldTrait: %b", sym.is_bold()));
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io::println(fmt!("kCTFontExpandedTrait: %b", sym.is_expanded()));
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io::println(fmt!("kCTFontCondensedTrait: %b", sym.is_condensed()));
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io::println(fmt!("kCTFontMonoSpaceTrait: %b", sym.is_monospace()));
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let traits = font.all_traits();
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io::println(fmt!("kCTFontWeightTrait: %f", traits.normalized_weight()));
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// io::println(fmt!("kCTFontWidthTrait: %f", traits.normalized_width()));
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// io::println(fmt!("kCTFontSlantTrait: %f", traits.normalized_slant()));
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}
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#[nolink]
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#[link_args = "-framework ApplicationServices"]
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extern {
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/*
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* CTFont.h
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*/
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/* Name Specifier Constants */
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const kCTFontCopyrightNameKey: CFStringRef;
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const kCTFontFamilyNameKey: CFStringRef;
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const kCTFontSubFamilyNameKey: CFStringRef;
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const kCTFontStyleNameKey: CFStringRef;
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const kCTFontUniqueNameKey: CFStringRef;
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const kCTFontFullNameKey: CFStringRef;
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const kCTFontVersionNameKey: CFStringRef;
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const kCTFontPostScriptNameKey: CFStringRef;
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const kCTFontTrademarkNameKey: CFStringRef;
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const kCTFontManufacturerNameKey: CFStringRef;
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const kCTFontDesignerNameKey: CFStringRef;
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const kCTFontDescriptionNameKey: CFStringRef;
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const kCTFontVendorURLNameKey: CFStringRef;
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const kCTFontDesignerURLNameKey: CFStringRef;
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const kCTFontLicenseNameKey: CFStringRef;
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const kCTFontLicenseURLNameKey: CFStringRef;
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const kCTFontSampleTextNameKey: CFStringRef;
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const kCTFontPostScriptCIDNameKey: CFStringRef;
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const kCTFontVariationAxisIdentifierKey: CFStringRef;
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const kCTFontVariationAxisMinimumValueKey: CFStringRef;
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const kCTFontVariationAxisMaximumValueKey: CFStringRef;
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const kCTFontVariationAxisDefaultValueKey: CFStringRef;
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const kCTFontVariationAxisNameKey: CFStringRef;
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const kCTFontFeatureTypeIdentifierKey: CFStringRef;
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const kCTFontFeatureTypeNameKey: CFStringRef;
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const kCTFontFeatureTypeExclusiveKey: CFStringRef;
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const kCTFontFeatureTypeSelectorsKey: CFStringRef;
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const kCTFontFeatureSelectorIdentifierKey: CFStringRef;
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const kCTFontFeatureSelectorNameKey: CFStringRef;
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const kCTFontFeatureSelectorDefaultKey: CFStringRef;
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const kCTFontFeatureSelectorSettingKey: CFStringRef;
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// N.B. Unlike most Cocoa bindings, this extern block is organized according
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// to the documentation's Functions By Task listing, because there so many functions.
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/* Creating Fonts */
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fn CTFontCreateWithName(name: CFStringRef, size: CGFloat, matrix: *CGAffineTransform) -> CTFontRef;
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//fn CTFontCreateWithNameAndOptions
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fn CTFontCreateWithFontDescriptor(descriptor: CTFontDescriptorRef, size: CGFloat,
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matrix: *CGAffineTransform) -> CTFontRef;
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//fn CTFontCreateWithFontDescriptorAndOptions
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//fn CTFontCreateUIFontForLanguage
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fn CTFontCreateCopyWithAttributes(font: CTFontRef, size: CGFloat, matrix: *CGAffineTransform,
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attributes: CTFontDescriptorRef) -> CTFontRef;
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//fn CTFontCreateCopyWithSymbolicTraits
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//fn CTFontCreateCopyWithFamily
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//fn CTFontCreateForString
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/* Getting Font Data */
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fn CTFontCopyFontDescriptor(font: CTFontRef) -> CTFontDescriptorRef;
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fn CTFontCopyAttribute(font: CTFontRef) -> CFTypeRef;
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fn CTFontGetSize(font: CTFontRef) -> CGFloat;
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//fn CTFontGetMatrix
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fn CTFontGetSymbolicTraits(font: CTFontRef) -> CTFontSymbolicTraits;
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fn CTFontCopyTraits(font: CTFontRef) -> CFDictionaryRef;
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/* Getting Font Names */
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fn CTFontCopyPostScriptName(font: CTFontRef) -> CFStringRef;
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fn CTFontCopyFamilyName(font: CTFontRef) -> CFStringRef;
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fn CTFontCopyFullName(font: CTFontRef) -> CFStringRef;
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fn CTFontCopyDisplayName(font: CTFontRef) -> CFStringRef;
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fn CTFontCopyName(font: CTFontRef, nameKey: CFStringRef) -> CFStringRef;
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fn CTFontCopyLocalizedName(font: CTFontRef, nameKey: CFStringRef,
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language: *CFStringRef) -> CFStringRef;
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/* Working With Encoding */
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//fn CTFontCopyCharacterSet
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//fn CTFontGetStringEncoding
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//fn CTFontCopySupportedLanguages
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/* Getting Font Metrics */
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fn CTFontGetAscent(font: CTFontRef) -> CGFloat;
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fn CTFontGetDescent(font: CTFontRef) -> CGFloat;
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fn CTFontGetLeading(font: CTFontRef) -> CGFloat;
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fn CTFontGetUnitsPerEm(font: CTFontRef) -> libc::c_uint;
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//fn CTFontGetGlyphCount
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fn CTFontGetBoundingBox(font: CTFontRef) -> CGRect;
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fn CTFontGetUnderlinePosition(font: CTFontRef) -> CGFloat;
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fn CTFontGetUnderlineThickness(font: CTFontRef) -> CGFloat;
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//fn CTFontGetSlantAngle
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//fn CTFontGetCapHeight
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fn CTFontGetXHeight(font: CTFontRef) -> CGFloat;
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/* Getting Glyph Data */
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//fn CTFontCreatePathForGlyph
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//fn CTFontGetGlyphWithName
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//fn CTFontGetBoundingRectsForGlyphs
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fn CTFontGetAdvancesForGlyphs(font: CTFontRef, orientation: CTFontOrientation, glyphs: *CGGlyph, advances: *CGSize, count: CFIndex) -> libc::c_double;
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//fn CTFontGetVerticalTranslationsForGlyphs
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/* Working With Font Variations */
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//fn CTFontCopyVariationAxes
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//fn CTFontCopyVariation
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/* Getting Font Features */
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//fn CTFontCopyFeatures
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//fn CTFontCopyFeatureSettings
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/* Working with Glyphs */
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fn CTFontGetGlyphsForCharacters(font: CTFontRef, characters: *UniChar, glyphs: *CGGlyph, count: CFIndex) -> bool;
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//fn CTFontDrawGlyphs
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//fn CTFontGetLigatureCaretPositions
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/* Converting Fonts */
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fn CTFontCopyGraphicsFont(font: CTFontRef, attributes: *CTFontDescriptorRef) -> CGFontRef;
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fn CTFontCreateWithGraphicsFont(graphicsFont: CGFontRef, size: CGFloat,
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matrix: *CGAffineTransform,
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attributes: CTFontDescriptorRef) -> CTFontRef;
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//fn CTFontGetPlatformFont
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//fn CTFontCreateWithPlatformFont
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//fn CTFontCreateWithQuickdrawInstance
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/* Getting Font Table Data */
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fn CTFontCopyAvailableTables(font: CTFontRef, options: CTFontTableOptions) -> CFArrayRef;
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fn CTFontCopyTable(font: CTFontRef, table: CTFontTableTag, options: CTFontTableOptions) -> CFDataRef;
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fn CTFontGetTypeID() -> CFTypeID;
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}
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