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Diffstat (limited to 'Godeps/_workspace/src/golang.org/x/image/font/basicfont/basicfont.go')
-rw-r--r-- | Godeps/_workspace/src/golang.org/x/image/font/basicfont/basicfont.go | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/Godeps/_workspace/src/golang.org/x/image/font/basicfont/basicfont.go b/Godeps/_workspace/src/golang.org/x/image/font/basicfont/basicfont.go deleted file mode 100644 index 7eae19c8b..000000000 --- a/Godeps/_workspace/src/golang.org/x/image/font/basicfont/basicfont.go +++ /dev/null @@ -1,113 +0,0 @@ -// Copyright 2015 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -//go:generate go run gen.go - -// Package basicfont provides fixed-size font faces. -package basicfont - -import ( - "image" - - "golang.org/x/image/math/fixed" -) - -// Range maps a contiguous range of runes to vertically adjacent sub-images of -// a Face's Mask image. The rune range is inclusive on the low end and -// exclusive on the high end. -// -// If Low <= r && r < High, then the rune r is mapped to the sub-image of -// Face.Mask whose bounds are image.Rect(0, y, Face.Width, y+Face.Height), -// where y equals (int(r-Low) + Offset) * Face.Height. -type Range struct { - Low, High rune - Offset int -} - -// Face7x13 is a Face derived from the public domain X11 misc-fixed font files. -// -// At the moment, it holds the printable characters in ASCII starting with -// space, and the Unicode replacement character U+FFFD. -// -// Its data is entirely self-contained and does not require loading from -// separate files. -var Face7x13 = &Face{ - Advance: 7, - Width: 6, - Height: 13, - Ascent: 11, - Mask: mask7x13, - Ranges: []Range{ - {'\u0020', '\u007f', 0}, - {'\ufffd', '\ufffe', 95}, - }, -} - -// Face is a basic font face whose glyphs all have the same metrics. -// -// It is safe to use concurrently. -type Face struct { - // Advance is the glyph advance, in pixels. - Advance int - // Width is the glyph width, in pixels. - Width int - // Height is the glyph height, in pixels. - Height int - // Ascent is the glyph ascent, in pixels. - Ascent int - - // TODO: do we also need Top and Left fields? - - // Mask contains all of the glyph masks. Its width is typically the Face's - // Width, and its height a multiple of the Face's Height. - Mask image.Image - // Ranges map runes to sub-images of Mask. The rune ranges must not - // overlap, and must be in increasing rune order. - Ranges []Range -} - -func (f *Face) Close() error { return nil } -func (f *Face) Kern(r0, r1 rune) fixed.Int26_6 { return 0 } - -func (f *Face) Glyph(dot fixed.Point26_6, r rune) ( - dr image.Rectangle, mask image.Image, maskp image.Point, advance fixed.Int26_6, ok bool) { - -loop: - for _, rr := range [2]rune{r, '\ufffd'} { - for _, rng := range f.Ranges { - if rr < rng.Low || rng.High <= rr { - continue - } - maskp.Y = (int(rr-rng.Low) + rng.Offset) * f.Height - ok = true - break loop - } - } - if !ok { - return image.Rectangle{}, nil, image.Point{}, 0, false - } - - minX := int(dot.X+32) >> 6 - minY := int(dot.Y+32)>>6 - f.Ascent - dr = image.Rectangle{ - Min: image.Point{ - X: minX, - Y: minY, - }, - Max: image.Point{ - X: minX + f.Width, - Y: minY + f.Height, - }, - } - - return dr, f.Mask, maskp, fixed.I(f.Advance), true -} - -func (f *Face) GlyphBounds(r rune) (bounds fixed.Rectangle26_6, advance fixed.Int26_6, ok bool) { - return fixed.R(0, -f.Ascent, f.Width, -f.Ascent+f.Height), fixed.I(f.Advance), true -} - -func (f *Face) GlyphAdvance(r rune) (advance fixed.Int26_6, ok bool) { - return fixed.I(f.Advance), true -} |