diff options
Diffstat (limited to 'vendor/golang.org/x/image/font')
-rw-r--r-- | vendor/golang.org/x/image/font/sfnt/postscript.go | 41 | ||||
-rw-r--r-- | vendor/golang.org/x/image/font/sfnt/proprietary_test.go | 125 | ||||
-rw-r--r-- | vendor/golang.org/x/image/font/sfnt/sfnt.go | 46 |
3 files changed, 188 insertions, 24 deletions
diff --git a/vendor/golang.org/x/image/font/sfnt/postscript.go b/vendor/golang.org/x/image/font/sfnt/postscript.go index 7c5db789d..b686e60ac 100644 --- a/vendor/golang.org/x/image/font/sfnt/postscript.go +++ b/vendor/golang.org/x/image/font/sfnt/postscript.go @@ -969,7 +969,8 @@ var psOperators = [...][2][]psOperator{ 31: {-1, "hvcurveto", t2CHvcurveto}, }, { // 2-byte operators. The first byte is the escape byte. - 0: {}, // Reserved. + 34: {+7, "hflex", t2CHflex}, + 36: {+9, "hflex1", t2CHflex1}, // TODO: more operators. }}, } @@ -1271,6 +1272,44 @@ func t2CRrcurveto(p *psInterpreter) error { return nil } +// For the flex operators, we ignore the flex depth and always produce cubic +// segments, not linear segments. It's not obvious why the Type 2 Charstring +// format cares about switching behavior based on a metric in pixels, not in +// ideal font units. The Go vector rasterizer has no problems with almost +// linear cubic segments. + +func t2CHflex(p *psInterpreter) error { + p.type2Charstrings.cubeTo( + p.argStack.a[0], 0, + p.argStack.a[1], +p.argStack.a[2], + p.argStack.a[3], 0, + ) + p.type2Charstrings.cubeTo( + p.argStack.a[4], 0, + p.argStack.a[5], -p.argStack.a[2], + p.argStack.a[6], 0, + ) + return nil +} + +func t2CHflex1(p *psInterpreter) error { + dy1 := p.argStack.a[1] + dy2 := p.argStack.a[3] + dy5 := p.argStack.a[7] + dy6 := -dy1 - dy2 - dy5 + p.type2Charstrings.cubeTo( + p.argStack.a[0], dy1, + p.argStack.a[2], dy2, + p.argStack.a[4], 0, + ) + p.type2Charstrings.cubeTo( + p.argStack.a[5], 0, + p.argStack.a[6], dy5, + p.argStack.a[8], dy6, + ) + return nil +} + // subrBias returns the subroutine index bias as per 5177.Type2.pdf section 4.7 // "Subroutine Operators". func subrBias(numSubroutines int) int32 { diff --git a/vendor/golang.org/x/image/font/sfnt/proprietary_test.go b/vendor/golang.org/x/image/font/sfnt/proprietary_test.go index dcafdd4c7..bb14a34b5 100644 --- a/vendor/golang.org/x/image/font/sfnt/proprietary_test.go +++ b/vendor/golang.org/x/image/font/sfnt/proprietary_test.go @@ -23,15 +23,14 @@ go test golang.org/x/image/font/sfnt -args -proprietary \ -adobeDir=$HOME/fonts/adobe \ -appleDir=$HOME/fonts/apple \ -dejavuDir=$HOME/fonts/dejavu \ - -microsoftDir=$HOME/fonts/microsoft + -microsoftDir=$HOME/fonts/microsoft \ + -notoDir=$HOME/fonts/noto To only run those tests for the Microsoft fonts: go test golang.org/x/image/font/sfnt -test.run=ProprietaryMicrosoft -args -proprietary etc */ -// TODO: add Google fonts (Droid? Noto?)? Emoji fonts? - // TODO: enable Apple/Microsoft tests by default on Darwin/Windows? import ( @@ -88,26 +87,41 @@ var ( "/usr/share/fonts/truetype/msttcorefonts", "directory name for the Microsoft proprietary fonts", ) + + notoDir = flag.String( + "notoDir", + // Get the fonts from https://www.google.com/get/noto/ + "", + "directory name for the Noto proprietary fonts", + ) ) -func TestProprietaryAdobeSourceCodeProOTF(t *testing.T) { +func TestProprietaryAdobeSourceCodeProRegularOTF(t *testing.T) { testProprietary(t, "adobe", "SourceCodePro-Regular.otf", 1500, -1) } -func TestProprietaryAdobeSourceCodeProTTF(t *testing.T) { +func TestProprietaryAdobeSourceCodeProRegularTTF(t *testing.T) { testProprietary(t, "adobe", "SourceCodePro-Regular.ttf", 1500, -1) } -func TestProprietaryAdobeSourceHanSansSC(t *testing.T) { +func TestProprietaryAdobeSourceHanSansSCRegularOTF(t *testing.T) { testProprietary(t, "adobe", "SourceHanSansSC-Regular.otf", 65535, -1) } -func TestProprietaryAdobeSourceSansProOTF(t *testing.T) { - testProprietary(t, "adobe", "SourceSansPro-Regular.otf", 1800, -1) +func TestProprietaryAdobeSourceSansProBlackOTF(t *testing.T) { + testProprietary(t, "adobe", "SourceSansPro-Black.otf", 1900, -1) +} + +func TestProprietaryAdobeSourceSansProBlackTTF(t *testing.T) { + testProprietary(t, "adobe", "SourceSansPro-Black.ttf", 1900, -1) } -func TestProprietaryAdobeSourceSansProTTF(t *testing.T) { - testProprietary(t, "adobe", "SourceSansPro-Regular.ttf", 1800, -1) +func TestProprietaryAdobeSourceSansProRegularOTF(t *testing.T) { + testProprietary(t, "adobe", "SourceSansPro-Regular.otf", 1900, -1) +} + +func TestProprietaryAdobeSourceSansProRegularTTF(t *testing.T) { + testProprietary(t, "adobe", "SourceSansPro-Regular.ttf", 1900, -1) } func TestProprietaryAppleAppleSymbols(t *testing.T) { @@ -186,6 +200,14 @@ func TestProprietaryMicrosoftWebdings(t *testing.T) { testProprietary(t, "microsoft", "Webdings.ttf", 200, -1) } +func TestProprietaryNotoColorEmoji(t *testing.T) { + testProprietary(t, "noto", "NotoColorEmoji.ttf", 2300, -1) +} + +func TestProprietaryNotoSansRegular(t *testing.T) { + testProprietary(t, "noto", "NotoSans-Regular.ttf", 2400, -1) +} + // testProprietary tests that we can load every glyph in the named font. // // The exact number of glyphs in the font can differ across its various @@ -219,6 +241,8 @@ func testProprietary(t *testing.T, proprietor, filename string, minNumGlyphs, fi dir = *dejavuDir case "microsoft": dir = *microsoftDir + case "noto": + dir = *notoDir default: panic("unreachable") } @@ -287,7 +311,7 @@ func testProprietary(t *testing.T, proprietor, filename string, minNumGlyphs, fi iMax = firstUnsupportedGlyph } for i, numErrors := 0, 0; i < iMax; i++ { - if _, err := f.LoadGlyph(&buf, GlyphIndex(i), ppem, nil); err != nil { + if _, err := f.LoadGlyph(&buf, GlyphIndex(i), ppem, nil); err != nil && err != ErrColoredGlyph { t.Errorf("LoadGlyph(%d): %v", i, err) numErrors++ } @@ -385,6 +409,8 @@ var proprietaryVersions = map[string]string{ "adobe/SourceCodePro-Regular.otf": "Version 2.030;PS 1.0;hotconv 16.6.51;makeotf.lib2.5.65220", "adobe/SourceCodePro-Regular.ttf": "Version 2.030;PS 1.000;hotconv 16.6.51;makeotf.lib2.5.65220", "adobe/SourceHanSansSC-Regular.otf": "Version 1.004;PS 1.004;hotconv 1.0.82;makeotf.lib2.5.63406", + "adobe/SourceSansPro-Black.otf": "Version 2.020;PS 2.0;hotconv 1.0.86;makeotf.lib2.5.63406", + "adobe/SourceSansPro-Black.ttf": "Version 2.020;PS 2.000;hotconv 1.0.86;makeotf.lib2.5.63406", "adobe/SourceSansPro-Regular.otf": "Version 2.020;PS 2.0;hotconv 1.0.86;makeotf.lib2.5.63406", "adobe/SourceSansPro-Regular.ttf": "Version 2.020;PS 2.000;hotconv 1.0.86;makeotf.lib2.5.63406", @@ -409,6 +435,9 @@ var proprietaryVersions = map[string]string{ "microsoft/Comic_Sans_MS.ttf": "Version 2.10", "microsoft/Times_New_Roman.ttf": "Version 2.82", "microsoft/Webdings.ttf": "Version 1.03", + + "noto/NotoColorEmoji.ttf": "Version 1.33", + "noto/NotoSans-Regular.ttf": "Version 1.06", } // proprietaryFullNames holds the expected full name of each proprietary font @@ -417,6 +446,8 @@ var proprietaryFullNames = map[string]string{ "adobe/SourceCodePro-Regular.otf": "Source Code Pro", "adobe/SourceCodePro-Regular.ttf": "Source Code Pro", "adobe/SourceHanSansSC-Regular.otf": "Source Han Sans SC Regular", + "adobe/SourceSansPro-Black.otf": "Source Sans Pro Black", + "adobe/SourceSansPro-Black.ttf": "Source Sans Pro Black", "adobe/SourceSansPro-Regular.otf": "Source Sans Pro", "adobe/SourceSansPro-Regular.ttf": "Source Sans Pro", @@ -441,6 +472,9 @@ var proprietaryFullNames = map[string]string{ "microsoft/Comic_Sans_MS.ttf": "Comic Sans MS", "microsoft/Times_New_Roman.ttf": "Times New Roman", "microsoft/Webdings.ttf": "Webdings", + + "noto/NotoColorEmoji.ttf": "Noto Color Emoji", + "noto/NotoSans-Regular.ttf": "Noto Sans", } // proprietaryGlyphIndexTestCases hold a sample of each font's rune to glyph @@ -617,6 +651,54 @@ var proprietaryGlyphTestCases = map[string]map[rune][]Segment{ }, }, + "adobe/SourceSansPro-Black.otf": { + 'ยค': { // U+00A4 CURRENCY SIGN + // -45 147 99 168 98 hstem + // 44 152 148 152 vstem + // 102 76 rmoveto + moveTo(102, 76), + // 71 71 rlineto + lineTo(173, 147), + // 31 -13 33 -6 33 32 34 6 31 hflex1 + cubeTo(204, 134, 237, 128, 270, 128), + cubeTo(302, 128, 336, 134, 367, 147), + // 71 -71 85 85 -61 60 rlineto + lineTo(438, 76), + lineTo(523, 161), + lineTo(462, 221), + // 21 30 13 36 43 vvcurveto + cubeTo(483, 251, 496, 287, 496, 330), + // 42 -12 36 -21 29 vhcurveto + cubeTo(496, 372, 484, 408, 463, 437), + // 60 60 -85 85 -70 -70 rlineto + lineTo(523, 497), + lineTo(438, 582), + lineTo(368, 512), + // -31 13 -34 7 -33 -33 -34 -7 -31 hflex1 + cubeTo(337, 525, 303, 532, 270, 532), + cubeTo(237, 532, 203, 525, 172, 512), + // -70 70 -85 -85 59 -60 rlineto + lineTo(102, 582), + lineTo(17, 497), + lineTo(76, 437), + // -20 -29 -12 -36 -42 vvcurveto + cubeTo(56, 408, 44, 372, 44, 330), + // -43 12 -36 21 -30 vhcurveto + cubeTo(44, 287, 56, 251, 77, 221), + // -60 -60 rlineto + lineTo(17, 161), + // 253 85 rmoveto + lineTo(102, 76), + moveTo(270, 246), + // -42 -32 32 52 52 32 32 42 42 32 -32 -52 -52 -32 -32 -42 hvcurveto + cubeTo(228, 246, 196, 278, 196, 330), + cubeTo(196, 382, 228, 414, 270, 414), + cubeTo(312, 414, 344, 382, 344, 330), + cubeTo(344, 278, 312, 246, 270, 246), + // endchar + }, + }, + "adobe/SourceSansPro-Regular.otf": { ',': { // -309 -1 115 hstem @@ -1152,6 +1234,27 @@ var proprietaryGlyphTestCases = map[string]map[rune][]Segment{ transform(-1<<14, 0, 0, +1<<14, 653, 0, quadTo(482, -217, 560, -384)), }, }, + + "noto/NotoSans-Regular.ttf": { + 'i': { + // - contour #0 + moveTo(354, 0), + lineTo(174, 0), + lineTo(174, 1098), + lineTo(354, 1098), + lineTo(354, 0), + // - contour #1 + moveTo(160, 1395), + quadTo(160, 1455, 190, 1482), + quadTo(221, 1509, 266, 1509), + quadTo(308, 1509, 339, 1482), + quadTo(371, 1455, 371, 1395), + quadTo(371, 1336, 339, 1308), + quadTo(308, 1280, 266, 1280), + quadTo(221, 1280, 190, 1308), + quadTo(160, 1336, 160, 1395), + }, + }, } type kernTestCase struct { diff --git a/vendor/golang.org/x/image/font/sfnt/sfnt.go b/vendor/golang.org/x/image/font/sfnt/sfnt.go index 34587da75..53ac94b8e 100644 --- a/vendor/golang.org/x/image/font/sfnt/sfnt.go +++ b/vendor/golang.org/x/image/font/sfnt/sfnt.go @@ -64,6 +64,9 @@ const ( ) var ( + // ErrColoredGlyph indicates that the requested glyph is not a monochrome + // vector glyph, such as a colored (bitmap or vector) emoji glyph. + ErrColoredGlyph = errors.New("sfnt: colored glyph") // ErrNotFound indicates that the requested value was not found. ErrNotFound = errors.New("sfnt: not found") @@ -544,6 +547,12 @@ type Font struct { cff table // https://www.microsoft.com/typography/otspec/otff.htm#otttables + // "Tables Related to Bitmap Glyphs". + // + // TODO: Others? + cblc table + + // https://www.microsoft.com/typography/otspec/otff.htm#otttables // "Advanced Typographic Tables". // // TODO: base, gdef, gpos, gsub, jstf, math? @@ -559,6 +568,7 @@ type Font struct { glyphIndex glyphIndexFunc bounds [4]int16 indexToLocFormat bool // false means short, true means long. + isColorBitmap bool isPostScript bool kernNumPairs int32 kernOffset int32 @@ -599,7 +609,7 @@ func (f *Font) initialize(offset int, isDfont bool) error { if err != nil { return err } - buf, glyphData, err := f.parseGlyphData(buf, numGlyphs, indexToLocFormat, isPostScript) + buf, glyphData, isColorBitmap, err := f.parseGlyphData(buf, numGlyphs, indexToLocFormat, isPostScript) if err != nil { return err } @@ -628,6 +638,7 @@ func (f *Font) initialize(offset int, isDfont bool) error { f.cached.glyphIndex = glyphIndex f.cached.bounds = bounds f.cached.indexToLocFormat = indexToLocFormat + f.cached.isColorBitmap = isColorBitmap f.cached.isPostScript = isPostScript f.cached.kernNumPairs = kernNumPairs f.cached.kernOffset = kernOffset @@ -701,6 +712,8 @@ func (f *Font) initializeTables(offset int, isDfont bool) (buf1 []byte, isPostSc // Match the 4-byte tag as a uint32. For example, "OS/2" is 0x4f532f32. switch tag { + case 0x43424c43: + f.cblc = table{o, n} case 0x43464620: f.cff = table{o, n} case 0x4f532f32: @@ -983,7 +996,7 @@ type glyphData struct { fdSelect fdSelect } -func (f *Font) parseGlyphData(buf []byte, numGlyphs int32, indexToLocFormat, isPostScript bool) (buf1 []byte, ret glyphData, err error) { +func (f *Font) parseGlyphData(buf []byte, numGlyphs int32, indexToLocFormat, isPostScript bool) (buf1 []byte, ret glyphData, isColorBitmap bool, err error) { if isPostScript { p := cffParser{ src: &f.src, @@ -993,19 +1006,25 @@ func (f *Font) parseGlyphData(buf []byte, numGlyphs int32, indexToLocFormat, isP } ret, err = p.parse(numGlyphs) if err != nil { - return nil, glyphData{}, err + return nil, glyphData{}, false, err } - } else { + } else if f.loca.length != 0 { ret.locations, err = parseLoca(&f.src, f.loca, f.glyf.offset, indexToLocFormat, numGlyphs) if err != nil { - return nil, glyphData{}, err + return nil, glyphData{}, false, err } + } else if f.cblc.length != 0 { + isColorBitmap = true + // TODO: parse the CBLC (and CBDT) tables. For now, we return a font + // with empty glyphs. + ret.locations = make([]uint32, numGlyphs+1) } + if len(ret.locations) != int(numGlyphs+1) { - return nil, glyphData{}, errInvalidLocationData + return nil, glyphData{}, false, errInvalidLocationData } - return buf, ret, nil + return buf, ret, isColorBitmap, nil } func (f *Font) parsePost(buf []byte, numGlyphs int32) (buf1 []byte, postTableVersion uint32, err error) { @@ -1105,13 +1124,18 @@ type LoadGlyphOptions struct { // // In the returned Segments' (x, y) coordinates, the Y axis increases down. // -// It returns ErrNotFound if the glyph index is out of range. +// It returns ErrNotFound if the glyph index is out of range. It returns +// ErrColoredGlyph if the glyph is not a monochrome vector glyph, such as a +// colored (bitmap or vector) emoji glyph. func (f *Font) LoadGlyph(b *Buffer, x GlyphIndex, ppem fixed.Int26_6, opts *LoadGlyphOptions) ([]Segment, error) { if b == nil { b = &Buffer{} } b.segments = b.segments[:0] + if f.cached.isColorBitmap { + return nil, ErrColoredGlyph + } if f.cached.isPostScript { buf, offset, length, err := f.viewGlyphData(b, x) if err != nil { @@ -1124,10 +1148,8 @@ func (f *Font) LoadGlyph(b *Buffer, x GlyphIndex, ppem fixed.Int26_6, opts *Load if !b.psi.type2Charstrings.ended { return nil, errInvalidCFFTable } - } else { - if err := loadGlyf(f, b, x, 0, 0); err != nil { - return nil, err - } + } else if err := loadGlyf(f, b, x, 0, 0); err != nil { + return nil, err } // Scale the segments. If we want to support hinting, we'll have to push |