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text: Remove font struct

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This commit is contained in:
Hajime Hoshi 2018-02-12 00:57:01 +09:00
parent 8c1a8b64eb
commit 950219f5b6
1 changed files with 20 additions and 25 deletions
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45
text/text.go
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@ -40,28 +40,23 @@ func now() int64 {
return monotonicClock
}
type face struct {
f font.Face
}
var (
faces = map[font.Face]face{}
faces = map[font.Face]struct{}{}
)
func fontFaceToFace(f font.Face) face {
if fa, ok := faces[f]; ok {
return fa
func fontFaceToFace(f font.Face) font.Face {
if _, ok := faces[f]; ok {
return f
}
// If the (DeepEqual-ly) same font exists,
// reuse this to avoid to consume a lot of cache (#498).
for key, value := range faces {
for key := range faces {
if reflect.DeepEqual(key, f) {
return value
return key
}
}
fa := face{f}
faces[f] = fa
return fa
faces[f] = struct{}{}
return f
}
var (
@ -69,20 +64,20 @@ var (
)
type char struct {
face face
face font.Face
rune rune
}
func (c *char) bounds() (minX, minY, maxX, maxY fixed.Int26_6) {
if m, ok := charBounds[c.face.f]; ok {
if m, ok := charBounds[c.face]; ok {
if b, ok := m[c.rune]; ok {
return b.Min.X, b.Min.Y, b.Max.X, b.Max.Y
}
} else {
charBounds[c.face.f] = map[rune]fixed.Rectangle26_6{}
charBounds[c.face] = map[rune]fixed.Rectangle26_6{}
}
b, _, _ := c.face.f.GlyphBounds(c.rune)
charBounds[c.face.f][c.rune] = b
b, _, _ := c.face.GlyphBounds(c.rune)
charBounds[c.face][c.rune] = b
return b.Min.X, b.Min.Y, b.Max.X, b.Max.Y
}
@ -138,7 +133,7 @@ func (g *glyph) draw(dst *ebiten.Image, x, y fixed.Int26_6, clr color.Color) {
af := float64(ca) / 0xffff
op.ColorM.Scale(rf, gf, bf, af)
a := atlases[g.char.face.f][g.char.atlasGroup()]
a := atlases[g.char.face][g.char.atlasGroup()]
sx, sy := a.at(g)
r := image.Rect(sx, sy, sx+a.glyphSize, sy+a.glyphSize)
op.SourceRect = &r
@ -181,7 +176,7 @@ func (a *atlas) maxGlyphNum() int {
return xnum * ynum
}
func (a *atlas) appendGlyph(face face, rune rune, now int64) *glyph {
func (a *atlas) appendGlyph(face font.Face, rune rune, now int64) *glyph {
g := &glyph{
char: char{face, rune},
atime: now,
@ -219,7 +214,7 @@ func (a *atlas) draw(glyph *glyph) {
d := font.Drawer{
Dst: dst,
Src: image.White,
Face: glyph.char.face.f,
Face: glyph.char.face,
}
minX, minY, _, _ := glyph.char.bounds()
d.Dot = fixed.Point26_6{-minX, -minY}
@ -235,10 +230,10 @@ func (a *atlas) draw(glyph *glyph) {
a.tmpImage.Clear()
}
func getGlyphFromCache(face face, r rune, now int64) *glyph {
func getGlyphFromCache(face font.Face, r rune, now int64) *glyph {
ch := char{face, r}
var at *atlas
if m, ok := atlases[face.f]; ok {
if m, ok := atlases[face]; ok {
a, ok := m[ch.atlasGroup()]
if ok {
g, ok := a.runeToGlyph[r]
@ -249,7 +244,7 @@ func getGlyphFromCache(face face, r rune, now int64) *glyph {
}
at = a
} else {
atlases[face.f] = map[int]*atlas{}
atlases[face] = map[int]*atlas{}
}
if ch.empty() {
@ -279,7 +274,7 @@ func getGlyphFromCache(face face, r rune, now int64) *glyph {
glyphSize: ch.atlasGroup(),
runeToGlyph: map[rune]*glyph{},
}
atlases[face.f][ch.atlasGroup()] = at
atlases[face][ch.atlasGroup()] = at
}
return at.appendGlyph(ch.face, ch.rune, now)