blob: 1f05524da4804a34e321e56c6741c35739a065b7 [file] [log] [blame]
 // Copyright 2016 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. package font import ( "image" "strings" "testing" "golang.org/x/image/math/fixed" ) const toyAdvance = fixed.Int26_6(10 << 6) type toyFace struct{} func (toyFace) Close() error { return nil } func (toyFace) Glyph(dot fixed.Point26_6, r rune) (image.Rectangle, image.Image, image.Point, fixed.Int26_6, bool) { panic("unimplemented") } func (toyFace) GlyphBounds(r rune) (fixed.Rectangle26_6, fixed.Int26_6, bool) { return fixed.Rectangle26_6{ Min: fixed.P(2, 0), Max: fixed.P(6, 1), }, toyAdvance, true } func (toyFace) GlyphAdvance(r rune) (fixed.Int26_6, bool) { return toyAdvance, true } func (toyFace) Kern(r0, r1 rune) fixed.Int26_6 { return 0 } func (toyFace) Metrics() Metrics { return Metrics{} } func TestBound(t *testing.T) { wantBounds := []fixed.Rectangle26_6{ {Min: fixed.P(0, 0), Max: fixed.P(0, 0)}, {Min: fixed.P(2, 0), Max: fixed.P(6, 1)}, {Min: fixed.P(2, 0), Max: fixed.P(16, 1)}, {Min: fixed.P(2, 0), Max: fixed.P(26, 1)}, } for i, wantBound := range wantBounds { s := strings.Repeat("x", i) gotBound, gotAdvance := BoundString(toyFace{}, s) if gotBound != wantBound { t.Errorf("i=%d: bound: got %v, want %v", i, gotBound, wantBound) } wantAdvance := toyAdvance * fixed.Int26_6(i) if gotAdvance != wantAdvance { t.Errorf("i=%d: advance: got %v, want %v", i, gotAdvance, wantAdvance) } } }