зеркало из https://github.com/golang/image.git
font/sfnt: implement hflex and hflex1.
Change-Id: I288a014a5b6c54e54ffa69b76a8b12fa7fdbc708 Reviewed-on: https://go-review.googlesource.com/43474 Reviewed-by: David Crawshaw <crawshaw@golang.org>
This commit is contained in:
Nigel Tao
Родитель
d835a09709
Коммит
426cfd8eeb
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@ -969,7 +969,8 @@ var psOperators = [...][2][]psOperator{
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31: {-1, "hvcurveto", t2CHvcurveto},
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}, {
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// 2-byte operators. The first byte is the escape byte.
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0: {}, // Reserved.
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34: {+7, "hflex", t2CHflex},
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36: {+9, "hflex1", t2CHflex1},
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// TODO: more operators.
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}},
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}
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@ -1271,6 +1272,44 @@ func t2CRrcurveto(p *psInterpreter) error {
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return nil
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}
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// For the flex operators, we ignore the flex depth and always produce cubic
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// segments, not linear segments. It's not obvious why the Type 2 Charstring
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// format cares about switching behavior based on a metric in pixels, not in
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// ideal font units. The Go vector rasterizer has no problems with almost
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// linear cubic segments.
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func t2CHflex(p *psInterpreter) error {
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p.type2Charstrings.cubeTo(
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p.argStack.a[0], 0,
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p.argStack.a[1], +p.argStack.a[2],
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p.argStack.a[3], 0,
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)
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p.type2Charstrings.cubeTo(
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p.argStack.a[4], 0,
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p.argStack.a[5], -p.argStack.a[2],
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p.argStack.a[6], 0,
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)
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return nil
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}
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func t2CHflex1(p *psInterpreter) error {
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dy1 := p.argStack.a[1]
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dy2 := p.argStack.a[3]
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dy5 := p.argStack.a[7]
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dy6 := -dy1 - dy2 - dy5
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p.type2Charstrings.cubeTo(
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p.argStack.a[0], dy1,
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p.argStack.a[2], dy2,
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p.argStack.a[4], 0,
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)
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p.type2Charstrings.cubeTo(
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p.argStack.a[5], 0,
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p.argStack.a[6], dy5,
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p.argStack.a[8], dy6,
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)
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return nil
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}
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// subrBias returns the subroutine index bias as per 5177.Type2.pdf section 4.7
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// "Subroutine Operators".
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func subrBias(numSubroutines int) int32 {
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@ -96,24 +96,32 @@ var (
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)
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)
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func TestProprietaryAdobeSourceCodeProOTF(t *testing.T) {
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func TestProprietaryAdobeSourceCodeProRegularOTF(t *testing.T) {
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testProprietary(t, "adobe", "SourceCodePro-Regular.otf", 1500, -1)
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}
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func TestProprietaryAdobeSourceCodeProTTF(t *testing.T) {
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func TestProprietaryAdobeSourceCodeProRegularTTF(t *testing.T) {
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testProprietary(t, "adobe", "SourceCodePro-Regular.ttf", 1500, -1)
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}
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func TestProprietaryAdobeSourceHanSansSC(t *testing.T) {
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func TestProprietaryAdobeSourceHanSansSCRegularOTF(t *testing.T) {
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testProprietary(t, "adobe", "SourceHanSansSC-Regular.otf", 65535, -1)
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}
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func TestProprietaryAdobeSourceSansProOTF(t *testing.T) {
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testProprietary(t, "adobe", "SourceSansPro-Regular.otf", 1800, -1)
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func TestProprietaryAdobeSourceSansProBlackOTF(t *testing.T) {
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testProprietary(t, "adobe", "SourceSansPro-Black.otf", 1900, -1)
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}
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func TestProprietaryAdobeSourceSansProTTF(t *testing.T) {
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testProprietary(t, "adobe", "SourceSansPro-Regular.ttf", 1800, -1)
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func TestProprietaryAdobeSourceSansProBlackTTF(t *testing.T) {
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testProprietary(t, "adobe", "SourceSansPro-Black.ttf", 1900, -1)
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}
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func TestProprietaryAdobeSourceSansProRegularOTF(t *testing.T) {
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testProprietary(t, "adobe", "SourceSansPro-Regular.otf", 1900, -1)
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}
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func TestProprietaryAdobeSourceSansProRegularTTF(t *testing.T) {
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testProprietary(t, "adobe", "SourceSansPro-Regular.ttf", 1900, -1)
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}
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func TestProprietaryAppleAppleSymbols(t *testing.T) {
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@ -401,6 +409,8 @@ var proprietaryVersions = map[string]string{
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"adobe/SourceCodePro-Regular.otf": "Version 2.030;PS 1.0;hotconv 16.6.51;makeotf.lib2.5.65220",
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"adobe/SourceCodePro-Regular.ttf": "Version 2.030;PS 1.000;hotconv 16.6.51;makeotf.lib2.5.65220",
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"adobe/SourceHanSansSC-Regular.otf": "Version 1.004;PS 1.004;hotconv 1.0.82;makeotf.lib2.5.63406",
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"adobe/SourceSansPro-Black.otf": "Version 2.020;PS 2.0;hotconv 1.0.86;makeotf.lib2.5.63406",
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"adobe/SourceSansPro-Black.ttf": "Version 2.020;PS 2.000;hotconv 1.0.86;makeotf.lib2.5.63406",
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"adobe/SourceSansPro-Regular.otf": "Version 2.020;PS 2.0;hotconv 1.0.86;makeotf.lib2.5.63406",
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"adobe/SourceSansPro-Regular.ttf": "Version 2.020;PS 2.000;hotconv 1.0.86;makeotf.lib2.5.63406",
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@ -436,6 +446,8 @@ var proprietaryFullNames = map[string]string{
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"adobe/SourceCodePro-Regular.otf": "Source Code Pro",
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"adobe/SourceCodePro-Regular.ttf": "Source Code Pro",
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"adobe/SourceHanSansSC-Regular.otf": "Source Han Sans SC Regular",
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"adobe/SourceSansPro-Black.otf": "Source Sans Pro Black",
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"adobe/SourceSansPro-Black.ttf": "Source Sans Pro Black",
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"adobe/SourceSansPro-Regular.otf": "Source Sans Pro",
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"adobe/SourceSansPro-Regular.ttf": "Source Sans Pro",
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@ -639,6 +651,54 @@ var proprietaryGlyphTestCases = map[string]map[rune][]Segment{
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},
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},
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"adobe/SourceSansPro-Black.otf": {
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'¤': { // U+00A4 CURRENCY SIGN
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// -45 147 99 168 98 hstem
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// 44 152 148 152 vstem
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// 102 76 rmoveto
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moveTo(102, 76),
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// 71 71 rlineto
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lineTo(173, 147),
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// 31 -13 33 -6 33 32 34 6 31 hflex1
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cubeTo(204, 134, 237, 128, 270, 128),
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cubeTo(302, 128, 336, 134, 367, 147),
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// 71 -71 85 85 -61 60 rlineto
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lineTo(438, 76),
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lineTo(523, 161),
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lineTo(462, 221),
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// 21 30 13 36 43 vvcurveto
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cubeTo(483, 251, 496, 287, 496, 330),
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// 42 -12 36 -21 29 vhcurveto
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cubeTo(496, 372, 484, 408, 463, 437),
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// 60 60 -85 85 -70 -70 rlineto
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lineTo(523, 497),
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lineTo(438, 582),
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lineTo(368, 512),
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// -31 13 -34 7 -33 -33 -34 -7 -31 hflex1
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cubeTo(337, 525, 303, 532, 270, 532),
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cubeTo(237, 532, 203, 525, 172, 512),
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// -70 70 -85 -85 59 -60 rlineto
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lineTo(102, 582),
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lineTo(17, 497),
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lineTo(76, 437),
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// -20 -29 -12 -36 -42 vvcurveto
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cubeTo(56, 408, 44, 372, 44, 330),
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// -43 12 -36 21 -30 vhcurveto
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cubeTo(44, 287, 56, 251, 77, 221),
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// -60 -60 rlineto
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lineTo(17, 161),
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// 253 85 rmoveto
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lineTo(102, 76),
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moveTo(270, 246),
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// -42 -32 32 52 52 32 32 42 42 32 -32 -52 -52 -32 -32 -42 hvcurveto
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cubeTo(228, 246, 196, 278, 196, 330),
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cubeTo(196, 382, 228, 414, 270, 414),
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cubeTo(312, 414, 344, 382, 344, 330),
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cubeTo(344, 278, 312, 246, 270, 246),
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// endchar
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},
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},
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"adobe/SourceSansPro-Regular.otf": {
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',': {
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// -309 -1 115 hstem
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