! Copyright (C) 2009 Slava Pestov.
! See http://factorcode.org/license.txt for BSD license.
-USING: arrays alien alien.c-types alien.syntax kernel destructors
-accessors fry words hashtables strings sequences memoize assocs math
-math.order math.vectors math.rectangles math.functions locals init
-namespaces combinators fonts colors cache core-foundation
-core-foundation.strings core-foundation.attributed-strings
-core-foundation.utilities core-graphics core-graphics.types
-core-text.fonts core-text.utilities ;
+USING: accessors alien.c-types alien.data alien.syntax arrays
+assocs cache classes colors combinators core-foundation
+core-foundation.attributed-strings core-foundation.strings
+core-graphics core-graphics.types core-text.fonts destructors
+fonts io.encodings.string io.encodings.utf16 kernel make
+math math.functions math.vectors namespaces opengl sequences
+strings ;
IN: core-text
TYPEDEF: void* CTLineRef
-C-GLOBAL: kCTFontAttributeName
-C-GLOBAL: kCTKernAttributeName
-C-GLOBAL: kCTLigatureAttributeName
-C-GLOBAL: kCTForegroundColorAttributeName
-C-GLOBAL: kCTParagraphStyleAttributeName
-C-GLOBAL: kCTUnderlineStyleAttributeName
-C-GLOBAL: kCTVerticalFormsAttributeName
-C-GLOBAL: kCTGlyphInfoAttributeName
+C-GLOBAL: CFStringRef kCTFontAttributeName
+C-GLOBAL: CFStringRef kCTKernAttributeName
+C-GLOBAL: CFStringRef kCTLigatureAttributeName
+C-GLOBAL: CFStringRef kCTForegroundColorAttributeName
+C-GLOBAL: CFStringRef kCTParagraphStyleAttributeName
+C-GLOBAL: CFStringRef kCTUnderlineStyleAttributeName
+C-GLOBAL: CFStringRef kCTVerticalFormsAttributeName
+C-GLOBAL: CFStringRef kCTGlyphInfoAttributeName
-FUNCTION: CTLineRef CTLineCreateWithAttributedString ( CFAttributedStringRef string ) ;
+FUNCTION: CTLineRef CTLineCreateWithAttributedString ( CFAttributedStringRef string )
-FUNCTION: void CTLineDraw ( CTLineRef line, CGContextRef context ) ;
+FUNCTION: void CTLineDraw ( CTLineRef line, CGContextRef context )
-FUNCTION: CGFloat CTLineGetOffsetForStringIndex ( CTLineRef line, CFIndex charIndex, CGFloat* secondaryOffset ) ;
+FUNCTION: CGFloat CTLineGetOffsetForStringIndex ( CTLineRef line, CFIndex charIndex, CGFloat* secondaryOffset )
-FUNCTION: CFIndex CTLineGetStringIndexForPosition ( CTLineRef line, CGPoint position ) ;
+FUNCTION: CFIndex CTLineGetStringIndexForPosition ( CTLineRef line, CGPoint position )
-FUNCTION: double CTLineGetTypographicBounds ( CTLineRef line, CGFloat* ascent, CGFloat* descent, CGFloat* leading ) ;
+FUNCTION: double CTLineGetTypographicBounds ( CTLineRef line, CGFloat* ascent, CGFloat* descent, CGFloat* leading )
-FUNCTION: CGRect CTLineGetImageBounds ( CTLineRef line, CGContextRef context ) ;
+FUNCTION: CGRect CTLineGetImageBounds ( CTLineRef line, CGContextRef context )
-ERROR: not-a-string object ;
+MEMO: make-attributes ( open-font color -- hashtable )
+ [
+ kCTForegroundColorAttributeName ,,
+ kCTFontAttributeName ,,
+ ] H{ } make ;
: <CTLine> ( string open-font color -- line )
[
[
dup selection? [ string>> ] when
- dup string? [ not-a-string ] unless
+ string check-instance
] 2dip
- [
- kCTForegroundColorAttributeName set
- kCTFontAttributeName set
- ] H{ } make-assoc <CFAttributedString> &CFRelease
+ make-attributes <CFAttributedString> &CFRelease
CTLineCreateWithAttributedString
] with-destructors ;
-TUPLE: line < disposable line metrics image loc dim ;
+TUPLE: line < disposable font string line metrics image loc dim
+render-loc render-dim render-ext ;
: typographic-bounds ( line -- width ascent descent leading )
- 0 <CGFloat> 0 <CGFloat> 0 <CGFloat>
- [ CTLineGetTypographicBounds ] 3keep [ *CGFloat ] tri@ ; inline
+ { CGFloat CGFloat CGFloat }
+ [ CTLineGetTypographicBounds ] with-out-parameters ; inline
: store-typographic-bounds ( metrics width ascent descent leading -- metrics )
{
: metrics>dim ( bounds -- dim )
[ width>> ] [ [ ascent>> ] [ descent>> ] bi + ] bi
- [ ceiling >integer ]
- bi@ 2array ;
+ ceiling >integer 2array ;
: fill-background ( context font dim -- )
[ background>> >rgba-components CGContextSetRGBFillColor ]
bi-curry* bi ;
: selection-rect ( dim line selection -- rect )
- [ start>> ] [ end>> ] bi
- [ f CTLineGetOffsetForStringIndex round ] bi-curry@ bi
+ [let [ start>> ] [ end>> ] [ string>> ] tri :> ( start end string )
+ start end [ 0 swap string subseq utf16n encode length 2 /i ] bi@
+ ]
+ [ f CTLineGetOffsetForStringIndex ] bi-curry@ bi
[ drop nip 0 ] [ swap - swap second ] 3bi <CGRect> ;
: CGRect-translate-x ( CGRect x -- CGRect' )
:: line-loc ( metrics loc dim -- loc )
loc first
- metrics ascent>> ceiling dim second loc second + - 2array ;
+ metrics ascent>> dim second loc second + - 1 - 2array ;
+
+: load-2x? ( -- ? )
+ gl-scale-factor get-global [ 1.0 > ] [ f ] if* ;
:: <line> ( font string -- line )
[
line new-disposable
+ font load-2x? [ cache-font@2x ] [ cache-font ] if :> open-font
+ string open-font font foreground>> <CTLine> |CFRelease :> line
+ open-font line compute-line-metrics
+ [ >>metrics ] [ metrics>dim >>dim ] bi
+ font >>font
+ string >>string
+ line >>line
+ ] with-destructors ;
- [let* | open-font [ font cache-font ]
- line [ string open-font font foreground>> <CTLine> |CFRelease ]
+:: render ( line -- line image )
+ line line>> :> ctline
+ line string>> :> string
+ line font>> :> font
- rect [ line line-rect ]
- (loc) [ rect origin>> CGPoint>loc ]
- (dim) [ rect size>> CGSize>dim ]
- (ext) [ (loc) (dim) v+ ]
- loc [ (loc) [ floor ] map ]
- ext [ (loc) (dim) [ + ceiling ] 2map ]
- dim [ ext loc [ - >integer 1 max ] 2map ]
- metrics [ open-font line compute-line-metrics ] |
+ line render-loc>> [
- line >>line
+ ctline line-rect :> rect
+ rect origin>> CGPoint>loc :> (loc)
+ rect size>> CGSize>dim :> (dim)
- metrics >>metrics
+ (loc) vfloor :> loc
+ (dim) vceiling :> dim
+ dim [ >integer 1 + ] map :> ext
- dim [
- {
- [ font dim fill-background ]
- [ loc dim line string fill-selection-background ]
- [ loc set-text-position ]
- [ [ line ] dip CTLineDraw ]
- } cleave
- ] make-bitmap-image >>image
+ loc line render-loc<<
+ dim line render-dim<<
+ ext line render-ext<<
- metrics loc dim line-loc >>loc
+ line metrics>> loc dim line-loc line loc<<
- metrics metrics>dim >>dim
- ]
- ] with-destructors ;
+ ] unless
+
+ line render-loc>> :> loc
+ line render-dim>> :> dim
+ line render-ext>> :> ext
+
+ line ext [
+ {
+ [ font ext fill-background ]
+ [ loc first 0 2array dim first ext second 2array ctline string fill-selection-background ]
+ [ loc set-text-position ]
+ [ [ ctline ] dip CTLineDraw ]
+ } cleave
+ ] make-bitmap-image load-2x? >>2x? ;
+
+: line>image ( line -- image )
+ dup image>> [ render >>image ] unless image>> ;
M: line dispose* line>> CFRelease ;
SYMBOL: cached-lines
: cached-line ( font string -- line )
- cached-lines get [ <line> ] 2cache ;
+ cached-lines get-global [ <line> ] 2cache ;
-[ <cache-assoc> cached-lines set-global ] "core-text" add-init-hook
+STARTUP-HOOK: [ <cache-assoc> cached-lines set-global ]
projects / factor.git / blobdiff