From 012ff506ecce1731819f7a9e149e60f6913a8d49 Mon Sep 17 00:00:00 2001 From: JoramWilander Date: Mon, 22 Jun 2015 15:11:20 -0400 Subject: fixes mm-1320 removes freetype libs and only use solid color for generated profile pics --- .../p/freetype-go/freetype/truetype/glyph.go | 530 --------------------- 1 file changed, 530 deletions(-) delete mode 100644 Godeps/_workspace/src/code.google.com/p/freetype-go/freetype/truetype/glyph.go (limited to 'Godeps/_workspace/src/code.google.com/p/freetype-go/freetype/truetype/glyph.go') diff --git a/Godeps/_workspace/src/code.google.com/p/freetype-go/freetype/truetype/glyph.go b/Godeps/_workspace/src/code.google.com/p/freetype-go/freetype/truetype/glyph.go deleted file mode 100644 index b5f327851..000000000 --- a/Godeps/_workspace/src/code.google.com/p/freetype-go/freetype/truetype/glyph.go +++ /dev/null @@ -1,530 +0,0 @@ -// Copyright 2010 The Freetype-Go Authors. All rights reserved. -// Use of this source code is governed by your choice of either the -// FreeType License or the GNU General Public License version 2 (or -// any later version), both of which can be found in the LICENSE file. - -package truetype - -// Hinting is the policy for snapping a glyph's contours to pixel boundaries. -type Hinting int32 - -const ( - // NoHinting means to not perform any hinting. - NoHinting Hinting = iota - // FullHinting means to use the font's hinting instructions. - FullHinting - - // TODO: implement VerticalHinting. -) - -// A Point is a co-ordinate pair plus whether it is ``on'' a contour or an -// ``off'' control point. -type Point struct { - X, Y int32 - // The Flags' LSB means whether or not this Point is ``on'' the contour. - // Other bits are reserved for internal use. - Flags uint32 -} - -// A GlyphBuf holds a glyph's contours. A GlyphBuf can be re-used to load a -// series of glyphs from a Font. -type GlyphBuf struct { - // AdvanceWidth is the glyph's advance width. - AdvanceWidth int32 - // B is the glyph's bounding box. - B Bounds - // Point contains all Points from all contours of the glyph. If - // hinting was used to load a glyph then Unhinted contains those - // Points before they were hinted, and InFontUnits contains those - // Points before they were hinted and scaled. - Point, Unhinted, InFontUnits []Point - // End is the point indexes of the end point of each countour. The - // length of End is the number of contours in the glyph. The i'th - // contour consists of points Point[End[i-1]:End[i]], where End[-1] - // is interpreted to mean zero. - End []int - - font *Font - scale int32 - hinting Hinting - hinter hinter - // phantomPoints are the co-ordinates of the synthetic phantom points - // used for hinting and bounding box calculations. - phantomPoints [4]Point - // pp1x is the X co-ordinate of the first phantom point. The '1' is - // using 1-based indexing; pp1x is almost always phantomPoints[0].X. - // TODO: eliminate this and consistently use phantomPoints[0].X. - pp1x int32 - // metricsSet is whether the glyph's metrics have been set yet. For a - // compound glyph, a sub-glyph may override the outer glyph's metrics. - metricsSet bool - // tmp is a scratch buffer. - tmp []Point -} - -// Flags for decoding a glyph's contours. These flags are documented at -// http://developer.apple.com/fonts/TTRefMan/RM06/Chap6glyf.html. -const ( - flagOnCurve = 1 << iota - flagXShortVector - flagYShortVector - flagRepeat - flagPositiveXShortVector - flagPositiveYShortVector - - // The remaining flags are for internal use. - flagTouchedX - flagTouchedY -) - -// The same flag bits (0x10 and 0x20) are overloaded to have two meanings, -// dependent on the value of the flag{X,Y}ShortVector bits. -const ( - flagThisXIsSame = flagPositiveXShortVector - flagThisYIsSame = flagPositiveYShortVector -) - -// Load loads a glyph's contours from a Font, overwriting any previously -// loaded contours for this GlyphBuf. scale is the number of 26.6 fixed point -// units in 1 em, i is the glyph index, and h is the hinting policy. -func (g *GlyphBuf) Load(f *Font, scale int32, i Index, h Hinting) error { - g.Point = g.Point[:0] - g.Unhinted = g.Unhinted[:0] - g.InFontUnits = g.InFontUnits[:0] - g.End = g.End[:0] - g.font = f - g.hinting = h - g.scale = scale - g.pp1x = 0 - g.phantomPoints = [4]Point{} - g.metricsSet = false - - if h != NoHinting { - if err := g.hinter.init(f, scale); err != nil { - return err - } - } - if err := g.load(0, i, true); err != nil { - return err - } - // TODO: this selection of either g.pp1x or g.phantomPoints[0].X isn't ideal, - // and should be cleaned up once we have all the testScaling tests passing, - // plus additional tests for Freetype-Go's bounding boxes matching C Freetype's. - pp1x := g.pp1x - if h != NoHinting { - pp1x = g.phantomPoints[0].X - } - if pp1x != 0 { - for i := range g.Point { - g.Point[i].X -= pp1x - } - } - - advanceWidth := g.phantomPoints[1].X - g.phantomPoints[0].X - if h != NoHinting { - if len(f.hdmx) >= 8 { - if n := u32(f.hdmx, 4); n > 3+uint32(i) { - for hdmx := f.hdmx[8:]; uint32(len(hdmx)) >= n; hdmx = hdmx[n:] { - if int32(hdmx[0]) == scale>>6 { - advanceWidth = int32(hdmx[2+i]) << 6 - break - } - } - } - } - advanceWidth = (advanceWidth + 32) &^ 63 - } - g.AdvanceWidth = advanceWidth - - // Set g.B to the 'control box', which is the bounding box of the Bézier - // curves' control points. This is easier to calculate, no smaller than - // and often equal to the tightest possible bounding box of the curves - // themselves. This approach is what C Freetype does. We can't just scale - // the nominal bounding box in the glyf data as the hinting process and - // phantom point adjustment may move points outside of that box. - if len(g.Point) == 0 { - g.B = Bounds{} - } else { - p := g.Point[0] - g.B.XMin = p.X - g.B.XMax = p.X - g.B.YMin = p.Y - g.B.YMax = p.Y - for _, p := range g.Point[1:] { - if g.B.XMin > p.X { - g.B.XMin = p.X - } else if g.B.XMax < p.X { - g.B.XMax = p.X - } - if g.B.YMin > p.Y { - g.B.YMin = p.Y - } else if g.B.YMax < p.Y { - g.B.YMax = p.Y - } - } - // Snap the box to the grid, if hinting is on. - if h != NoHinting { - g.B.XMin &^= 63 - g.B.YMin &^= 63 - g.B.XMax += 63 - g.B.XMax &^= 63 - g.B.YMax += 63 - g.B.YMax &^= 63 - } - } - return nil -} - -func (g *GlyphBuf) load(recursion int32, i Index, useMyMetrics bool) (err error) { - // The recursion limit here is arbitrary, but defends against malformed glyphs. - if recursion >= 32 { - return UnsupportedError("excessive compound glyph recursion") - } - // Find the relevant slice of g.font.glyf. - var g0, g1 uint32 - if g.font.locaOffsetFormat == locaOffsetFormatShort { - g0 = 2 * uint32(u16(g.font.loca, 2*int(i))) - g1 = 2 * uint32(u16(g.font.loca, 2*int(i)+2)) - } else { - g0 = u32(g.font.loca, 4*int(i)) - g1 = u32(g.font.loca, 4*int(i)+4) - } - - // Decode the contour count and nominal bounding box, from the first - // 10 bytes of the glyf data. boundsYMin and boundsXMax, at offsets 4 - // and 6, are unused. - glyf, ne, boundsXMin, boundsYMax := []byte(nil), 0, int32(0), int32(0) - if g0+10 <= g1 { - glyf = g.font.glyf[g0:g1] - ne = int(int16(u16(glyf, 0))) - boundsXMin = int32(int16(u16(glyf, 2))) - boundsYMax = int32(int16(u16(glyf, 8))) - } - - // Create the phantom points. - uhm, pp1x := g.font.unscaledHMetric(i), int32(0) - uvm := g.font.unscaledVMetric(i, boundsYMax) - g.phantomPoints = [4]Point{ - {X: boundsXMin - uhm.LeftSideBearing}, - {X: boundsXMin - uhm.LeftSideBearing + uhm.AdvanceWidth}, - {X: uhm.AdvanceWidth / 2, Y: boundsYMax + uvm.TopSideBearing}, - {X: uhm.AdvanceWidth / 2, Y: boundsYMax + uvm.TopSideBearing - uvm.AdvanceHeight}, - } - if len(glyf) == 0 { - g.addPhantomsAndScale(len(g.Point), len(g.Point), true, true) - copy(g.phantomPoints[:], g.Point[len(g.Point)-4:]) - g.Point = g.Point[:len(g.Point)-4] - return nil - } - - // Load and hint the contours. - if ne < 0 { - if ne != -1 { - // http://developer.apple.com/fonts/TTRefMan/RM06/Chap6glyf.html says that - // "the values -2, -3, and so forth, are reserved for future use." - return UnsupportedError("negative number of contours") - } - pp1x = g.font.scale(g.scale * (boundsXMin - uhm.LeftSideBearing)) - if err := g.loadCompound(recursion, uhm, i, glyf, useMyMetrics); err != nil { - return err - } - } else { - np0, ne0 := len(g.Point), len(g.End) - program := g.loadSimple(glyf, ne) - g.addPhantomsAndScale(np0, np0, true, true) - pp1x = g.Point[len(g.Point)-4].X - if g.hinting != NoHinting { - if len(program) != 0 { - err := g.hinter.run( - program, - g.Point[np0:], - g.Unhinted[np0:], - g.InFontUnits[np0:], - g.End[ne0:], - ) - if err != nil { - return err - } - } - // Drop the four phantom points. - g.InFontUnits = g.InFontUnits[:len(g.InFontUnits)-4] - g.Unhinted = g.Unhinted[:len(g.Unhinted)-4] - } - if useMyMetrics { - copy(g.phantomPoints[:], g.Point[len(g.Point)-4:]) - } - g.Point = g.Point[:len(g.Point)-4] - if np0 != 0 { - // The hinting program expects the []End values to be indexed relative - // to the inner glyph, not the outer glyph, so we delay adding np0 until - // after the hinting program (if any) has run. - for i := ne0; i < len(g.End); i++ { - g.End[i] += np0 - } - } - } - if useMyMetrics && !g.metricsSet { - g.metricsSet = true - g.pp1x = pp1x - } - return nil -} - -// loadOffset is the initial offset for loadSimple and loadCompound. The first -// 10 bytes are the number of contours and the bounding box. -const loadOffset = 10 - -func (g *GlyphBuf) loadSimple(glyf []byte, ne int) (program []byte) { - offset := loadOffset - for i := 0; i < ne; i++ { - g.End = append(g.End, 1+int(u16(glyf, offset))) - offset += 2 - } - - // Note the TrueType hinting instructions. - instrLen := int(u16(glyf, offset)) - offset += 2 - program = glyf[offset : offset+instrLen] - offset += instrLen - - np0 := len(g.Point) - np1 := np0 + int(g.End[len(g.End)-1]) - - // Decode the flags. - for i := np0; i < np1; { - c := uint32(glyf[offset]) - offset++ - g.Point = append(g.Point, Point{Flags: c}) - i++ - if c&flagRepeat != 0 { - count := glyf[offset] - offset++ - for ; count > 0; count-- { - g.Point = append(g.Point, Point{Flags: c}) - i++ - } - } - } - - // Decode the co-ordinates. - var x int16 - for i := np0; i < np1; i++ { - f := g.Point[i].Flags - if f&flagXShortVector != 0 { - dx := int16(glyf[offset]) - offset++ - if f&flagPositiveXShortVector == 0 { - x -= dx - } else { - x += dx - } - } else if f&flagThisXIsSame == 0 { - x += int16(u16(glyf, offset)) - offset += 2 - } - g.Point[i].X = int32(x) - } - var y int16 - for i := np0; i < np1; i++ { - f := g.Point[i].Flags - if f&flagYShortVector != 0 { - dy := int16(glyf[offset]) - offset++ - if f&flagPositiveYShortVector == 0 { - y -= dy - } else { - y += dy - } - } else if f&flagThisYIsSame == 0 { - y += int16(u16(glyf, offset)) - offset += 2 - } - g.Point[i].Y = int32(y) - } - - return program -} - -func (g *GlyphBuf) loadCompound(recursion int32, uhm HMetric, i Index, - glyf []byte, useMyMetrics bool) error { - - // Flags for decoding a compound glyph. These flags are documented at - // http://developer.apple.com/fonts/TTRefMan/RM06/Chap6glyf.html. - const ( - flagArg1And2AreWords = 1 << iota - flagArgsAreXYValues - flagRoundXYToGrid - flagWeHaveAScale - flagUnused - flagMoreComponents - flagWeHaveAnXAndYScale - flagWeHaveATwoByTwo - flagWeHaveInstructions - flagUseMyMetrics - flagOverlapCompound - ) - np0, ne0 := len(g.Point), len(g.End) - offset := loadOffset - for { - flags := u16(glyf, offset) - component := Index(u16(glyf, offset+2)) - dx, dy, transform, hasTransform := int32(0), int32(0), [4]int32{}, false - if flags&flagArg1And2AreWords != 0 { - dx = int32(int16(u16(glyf, offset+4))) - dy = int32(int16(u16(glyf, offset+6))) - offset += 8 - } else { - dx = int32(int16(int8(glyf[offset+4]))) - dy = int32(int16(int8(glyf[offset+5]))) - offset += 6 - } - if flags&flagArgsAreXYValues == 0 { - return UnsupportedError("compound glyph transform vector") - } - if flags&(flagWeHaveAScale|flagWeHaveAnXAndYScale|flagWeHaveATwoByTwo) != 0 { - hasTransform = true - switch { - case flags&flagWeHaveAScale != 0: - transform[0] = int32(int16(u16(glyf, offset+0))) - transform[3] = transform[0] - offset += 2 - case flags&flagWeHaveAnXAndYScale != 0: - transform[0] = int32(int16(u16(glyf, offset+0))) - transform[3] = int32(int16(u16(glyf, offset+2))) - offset += 4 - case flags&flagWeHaveATwoByTwo != 0: - transform[0] = int32(int16(u16(glyf, offset+0))) - transform[1] = int32(int16(u16(glyf, offset+2))) - transform[2] = int32(int16(u16(glyf, offset+4))) - transform[3] = int32(int16(u16(glyf, offset+6))) - offset += 8 - } - } - savedPP := g.phantomPoints - np0 := len(g.Point) - componentUMM := useMyMetrics && (flags&flagUseMyMetrics != 0) - if err := g.load(recursion+1, component, componentUMM); err != nil { - return err - } - if flags&flagUseMyMetrics == 0 { - g.phantomPoints = savedPP - } - if hasTransform { - for j := np0; j < len(g.Point); j++ { - p := &g.Point[j] - newX := int32((int64(p.X)*int64(transform[0])+1<<13)>>14) + - int32((int64(p.Y)*int64(transform[2])+1<<13)>>14) - newY := int32((int64(p.X)*int64(transform[1])+1<<13)>>14) + - int32((int64(p.Y)*int64(transform[3])+1<<13)>>14) - p.X, p.Y = newX, newY - } - } - dx = g.font.scale(g.scale * dx) - dy = g.font.scale(g.scale * dy) - if flags&flagRoundXYToGrid != 0 { - dx = (dx + 32) &^ 63 - dy = (dy + 32) &^ 63 - } - for j := np0; j < len(g.Point); j++ { - p := &g.Point[j] - p.X += dx - p.Y += dy - } - // TODO: also adjust g.InFontUnits and g.Unhinted? - if flags&flagMoreComponents == 0 { - break - } - } - - instrLen := 0 - if g.hinting != NoHinting && offset+2 <= len(glyf) { - instrLen = int(u16(glyf, offset)) - offset += 2 - } - - g.addPhantomsAndScale(np0, len(g.Point), false, instrLen > 0) - points, ends := g.Point[np0:], g.End[ne0:] - g.Point = g.Point[:len(g.Point)-4] - for j := range points { - points[j].Flags &^= flagTouchedX | flagTouchedY - } - - if instrLen == 0 { - if !g.metricsSet { - copy(g.phantomPoints[:], points[len(points)-4:]) - } - return nil - } - - // Hint the compound glyph. - program := glyf[offset : offset+instrLen] - // Temporarily adjust the ends to be relative to this compound glyph. - if np0 != 0 { - for i := range ends { - ends[i] -= np0 - } - } - // Hinting instructions of a composite glyph completely refer to the - // (already) hinted subglyphs. - g.tmp = append(g.tmp[:0], points...) - if err := g.hinter.run(program, points, g.tmp, g.tmp, ends); err != nil { - return err - } - if np0 != 0 { - for i := range ends { - ends[i] += np0 - } - } - if !g.metricsSet { - copy(g.phantomPoints[:], points[len(points)-4:]) - } - return nil -} - -func (g *GlyphBuf) addPhantomsAndScale(np0, np1 int, simple, adjust bool) { - // Add the four phantom points. - g.Point = append(g.Point, g.phantomPoints[:]...) - // Scale the points. - if simple && g.hinting != NoHinting { - g.InFontUnits = append(g.InFontUnits, g.Point[np1:]...) - } - for i := np1; i < len(g.Point); i++ { - p := &g.Point[i] - p.X = g.font.scale(g.scale * p.X) - p.Y = g.font.scale(g.scale * p.Y) - } - if g.hinting == NoHinting { - return - } - // Round the 1st phantom point to the grid, shifting all other points equally. - // Note that "all other points" starts from np0, not np1. - // TODO: delete this adjustment and the np0/np1 distinction, when - // we update the compatibility tests to C Freetype 2.5.3. - // See http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=05c786d990390a7ca18e62962641dac740bacb06 - if adjust { - pp1x := g.Point[len(g.Point)-4].X - if dx := ((pp1x + 32) &^ 63) - pp1x; dx != 0 { - for i := np0; i < len(g.Point); i++ { - g.Point[i].X += dx - } - } - } - if simple { - g.Unhinted = append(g.Unhinted, g.Point[np1:]...) - } - // Round the 2nd and 4th phantom point to the grid. - p := &g.Point[len(g.Point)-3] - p.X = (p.X + 32) &^ 63 - p = &g.Point[len(g.Point)-1] - p.Y = (p.Y + 32) &^ 63 -} - -// TODO: is this necessary? The zero-valued GlyphBuf is perfectly usable. - -// NewGlyphBuf returns a newly allocated GlyphBuf. -func NewGlyphBuf() *GlyphBuf { - return &GlyphBuf{ - Point: make([]Point, 0, 256), - End: make([]int, 0, 32), - } -} -- cgit v1.2.3-1-g7c22