f32: [API] unexport Rectangle

There are no public API that uses f32.Rectangle anymore. Move Rectangle
to an internal package for internal use.

Signed-off-by: Elias Naur <mail@eliasnaur.com>

app/os_macos.go

@@ -13,7 +13,7 @@ import (
 	"unicode"
 	"unicode/utf8"
 
-	"gioui.org/f32"
+	"gioui.org/internal/f32"
 	"gioui.org/io/clipboard"
 	"gioui.org/io/key"
 	"gioui.org/io/pointer"

f32/f32.go

@@ -2,7 +2,7 @@
 
 /*
 Package f32 is a float32 implementation of package image's
-Point and Rectangle.
+Point and affine transformations.
 
 The coordinate space has the origin in the top left
 corner with the axes extending right and down.
@@ -26,30 +26,6 @@ func (p Point) String() string {
 		"," + strconv.FormatFloat(float64(p.Y), 'f', -1, 32) + ")"
 }
 
-// A Rectangle contains the points (X, Y) where Min.X <= X < Max.X,
-// Min.Y <= Y < Max.Y.
-type Rectangle struct {
-	Min, Max Point
-}
-
-// String return a string representation of r.
-func (r Rectangle) String() string {
-	return r.Min.String() + "-" + r.Max.String()
-}
-
-// Rect is a shorthand for Rectangle{Point{x0, y0}, Point{x1, y1}}.
-// The returned Rectangle has x0 and y0 swapped if necessary so that
-// it's correctly formed.
-func Rect(x0, y0, x1, y1 float32) Rectangle {
-	if x0 > x1 {
-		x0, x1 = x1, x0
-	}
-	if y0 > y1 {
-		y0, y1 = y1, y0
-	}
-	return Rectangle{Point{x0, y0}, Point{x1, y1}}
-}
-
 // Pt is shorthand for Point{X: x, Y: y}.
 func Pt(x, y float32) Point {
 	return Point{X: x, Y: y}
@@ -75,12 +51,6 @@ func (p Point) Div(s float32) Point {
 	return Point{X: p.X / s, Y: p.Y / s}
 }
 
-// In reports whether p is in r.
-func (p Point) In(r Rectangle) bool {
-	return r.Min.X <= p.X && p.X < r.Max.X &&
-		r.Min.Y <= p.Y && p.Y < r.Max.Y
-}
-
 // Round returns the integer point closest to p.
 func (p Point) Round() image.Point {
 	return image.Point{
@@ -88,117 +58,3 @@ func (p Point) Round() image.Point {
 		Y: int(math.Round(float64(p.Y))),
 	}
 }
-
-// Size returns r's width and height.
-func (r Rectangle) Size() Point {
-	return Point{X: r.Dx(), Y: r.Dy()}
-}
-
-// Dx returns r's width.
-func (r Rectangle) Dx() float32 {
-	return r.Max.X - r.Min.X
-}
-
-// Dy returns r's Height.
-func (r Rectangle) Dy() float32 {
-	return r.Max.Y - r.Min.Y
-}
-
-// Intersect returns the intersection of r and s.
-func (r Rectangle) Intersect(s Rectangle) Rectangle {
-	if r.Min.X < s.Min.X {
-		r.Min.X = s.Min.X
-	}
-	if r.Min.Y < s.Min.Y {
-		r.Min.Y = s.Min.Y
-	}
-	if r.Max.X > s.Max.X {
-		r.Max.X = s.Max.X
-	}
-	if r.Max.Y > s.Max.Y {
-		r.Max.Y = s.Max.Y
-	}
-	if r.Empty() {
-		return Rectangle{}
-	}
-	return r
-}
-
-// Union returns the union of r and s.
-func (r Rectangle) Union(s Rectangle) Rectangle {
-	if r.Empty() {
-		return s
-	}
-	if s.Empty() {
-		return r
-	}
-	if r.Min.X > s.Min.X {
-		r.Min.X = s.Min.X
-	}
-	if r.Min.Y > s.Min.Y {
-		r.Min.Y = s.Min.Y
-	}
-	if r.Max.X < s.Max.X {
-		r.Max.X = s.Max.X
-	}
-	if r.Max.Y < s.Max.Y {
-		r.Max.Y = s.Max.Y
-	}
-	return r
-}
-
-// Canon returns the canonical version of r, where Min is to
-// the upper left of Max.
-func (r Rectangle) Canon() Rectangle {
-	if r.Max.X < r.Min.X {
-		r.Min.X, r.Max.X = r.Max.X, r.Min.X
-	}
-	if r.Max.Y < r.Min.Y {
-		r.Min.Y, r.Max.Y = r.Max.Y, r.Min.Y
-	}
-	return r
-}
-
-// Empty reports whether r represents the empty area.
-func (r Rectangle) Empty() bool {
-	return r.Min.X >= r.Max.X || r.Min.Y >= r.Max.Y
-}
-
-// Add offsets r with the vector p.
-func (r Rectangle) Add(p Point) Rectangle {
-	return Rectangle{
-		Point{r.Min.X + p.X, r.Min.Y + p.Y},
-		Point{r.Max.X + p.X, r.Max.Y + p.Y},
-	}
-}
-
-// Sub offsets r with the vector -p.
-func (r Rectangle) Sub(p Point) Rectangle {
-	return Rectangle{
-		Point{r.Min.X - p.X, r.Min.Y - p.Y},
-		Point{r.Max.X - p.X, r.Max.Y - p.Y},
-	}
-}
-
-// Round returns the smallest integer rectangle that
-// contains r.
-func (r Rectangle) Round() image.Rectangle {
-	return image.Rectangle{
-		Min: image.Point{
-			X: int(floor(r.Min.X)),
-			Y: int(floor(r.Min.Y)),
-		},
-		Max: image.Point{
-			X: int(ceil(r.Max.X)),
-			Y: int(ceil(r.Max.Y)),
-		},
-	}
-}
-
-func ceil(v float32) int {
-	return int(math.Ceil(float64(v)))
-}
-
-func floor(v float32) int {
-	return int(math.Floor(float64(v)))
-}

gpu/caches.go

@@ -5,7 +5,7 @@ package gpu
 import (
 	"fmt"
 
-	"gioui.org/f32"
+	"gioui.org/internal/f32"
 )
 
 type resourceCache struct {

gpu/clip.go

@@ -1,7 +1,7 @@
 package gpu
 
 import (
-	"gioui.org/f32"
+	"gioui.org/internal/f32"
 	"gioui.org/internal/stroke"
 )
 

gpu/compute.go

@@ -21,9 +21,9 @@ import (
 	"unsafe"
 
 	"gioui.org/cpu"
-	"gioui.org/f32"
 	"gioui.org/gpu/internal/driver"
 	"gioui.org/internal/byteslice"
+	"gioui.org/internal/f32"
 	"gioui.org/internal/f32color"
 	"gioui.org/internal/ops"
 	"gioui.org/internal/scene"
@@ -855,7 +855,7 @@ func (g *compute) blitLayers(d driver.LoadDesc, fbo driver.Texture, viewport ima
 	for _, l := range layers {
 		placef := layout.FPt(l.alloc.rect.Min)
 		sizef := layout.FPt(l.rect.Size())
-		r := frect(l.rect)
+		r := f32.FRect(l.rect)
 		quad := [4]layerVertex{
 			{posX: float32(r.Min.X), posY: float32(r.Min.Y), u: placef.X, v: placef.Y},
 			{posX: float32(r.Max.X), posY: float32(r.Min.Y), u: placef.X + sizef.X, v: placef.Y},
@@ -1782,7 +1782,7 @@ func (c *collector) collect(root *op.Ops, viewport image.Point, texOps *[]textur
 		case ops.TypeClip:
 			var op ops.ClipOp
 			op.Decode(encOp.Data)
-			bounds := frect(op.Bounds)
+			bounds := f32.FRect(op.Bounds)
 			c.addClip(&state, fview, bounds, pathData.data, pathData.key, pathData.hash, strWidth, true)
 			pathData.data = nil
 			strWidth = 0

gpu/gpu.go

@@ -18,9 +18,9 @@ import (
 	"time"
 	"unsafe"
 
-	"gioui.org/f32"
 	"gioui.org/gpu/internal/driver"
 	"gioui.org/internal/byteslice"
+	"gioui.org/internal/f32"
 	"gioui.org/internal/f32color"
 	"gioui.org/internal/ops"
 	"gioui.org/internal/scene"
@@ -695,8 +695,8 @@ func (r *renderer) intersectPath(p *pathOp, clip image.Rectangle) {
 	}
 	fbo := r.pather.stenciler.cover(p.place.Idx)
 	r.ctx.BindTexture(0, fbo.tex)
-	coverScale, coverOff := texSpaceTransform(frect(uv), fbo.size)
-	subScale, subOff := texSpaceTransform(frect(sub), p.clip.Size())
+	coverScale, coverOff := texSpaceTransform(f32.FRect(uv), fbo.size)
+	subScale, subOff := texSpaceTransform(f32.FRect(sub), p.clip.Size())
 	r.pather.stenciler.ipipeline.uniforms.vert.uvTransform = [4]float32{coverScale.X, coverScale.Y, coverOff.X, coverOff.Y}
 	r.pather.stenciler.ipipeline.uniforms.vert.subUVTransform = [4]float32{subScale.X, subScale.Y, subOff.X, subOff.Y}
 	r.pather.stenciler.ipipeline.pipeline.UploadUniforms(r.ctx)
@@ -888,7 +888,7 @@ loop:
 			var op ops.ClipOp
 			op.Decode(encOp.Data)
 			quads.key.outline = op.Outline
-			bounds := frect(op.Bounds)
+			bounds := f32.FRect(op.Bounds)
 			trans, off := splitTransform(state.t)
 			if len(quads.aux) > 0 {
 				// There is a clipping path, build the gpu data and update the
@@ -1108,7 +1108,7 @@ func (r *renderer) drawOps(cache *resourceCache, ops []imageOp) {
 			Min: img.place.Pos,
 			Max: img.place.Pos.Add(drc.Size()),
 		}
-		coverScale, coverOff := texSpaceTransform(frect(uv), fbo.size)
+		coverScale, coverOff := texSpaceTransform(f32.FRect(uv), fbo.size)
 		p := r.pather.coverer.pipelines[m.material]
 		r.ctx.BindPipeline(p.pipeline)
 		r.ctx.BindVertexBuffer(r.blitter.quadVerts, 0)
@@ -1406,17 +1406,3 @@ func isPureOffset(t f32.Affine2D) bool {
 	a, b, _, d, e, _ := t.Elems()
 	return a == 1 && b == 0 && d == 0 && e == 1
 }
-
-// frect converts a rectangle to a f32.Rectangle.
-func frect(r image.Rectangle) f32.Rectangle {
-	return f32.Rectangle{
-		Min: fpt(r.Min), Max: fpt(r.Max),
-	}
-}
-
-// fpt converts an point to a f32.Point.
-func fpt(p image.Point) f32.Point {
-	return f32.Point{
-		X: float32(p.X), Y: float32(p.Y),
-	}
-}

gpu/internal/rendertest/render_test.go

@@ -10,7 +10,7 @@ import (
 
 	"golang.org/x/image/colornames"
 
-	"gioui.org/f32"
+	"gioui.org/internal/f32"
 	"gioui.org/internal/f32color"
 	"gioui.org/op"
 	"gioui.org/op/clip"

gpu/path.go

@@ -11,9 +11,9 @@ import (
 	"math"
 	"unsafe"
 
-	"gioui.org/f32"
 	"gioui.org/gpu/internal/driver"
 	"gioui.org/internal/byteslice"
+	"gioui.org/internal/f32"
 	"gioui.org/internal/f32color"
 	"gioui.org/shader"
 	"gioui.org/shader/gio"

internal/f32/f32.go

@@ -1,30 +1,23 @@
 // SPDX-License-Identifier: Unlicense OR MIT
 
 /*
-Package f32 is a float32 implementation of package image's
-Point and Rectangle.
-
-The coordinate space has the origin in the top left
-corner with the axes extending right and down.
+Package f32 is an internal version of the public package f32 with
+extra types for internal use.
 */
 package f32
 
 import (
 	"image"
 	"math"
-	"strconv"
+
+	"gioui.org/f32"
 )
 
-// A Point is a two dimensional point.
-type Point struct {
-	X, Y float32
-}
+type Point = f32.Point
 
-// String return a string representation of p.
-func (p Point) String() string {
-	return "(" + strconv.FormatFloat(float64(p.X), 'f', -1, 32) +
-		"," + strconv.FormatFloat(float64(p.Y), 'f', -1, 32) + ")"
-}
+type Affine2D = f32.Affine2D
+
+var NewAffine2D = f32.NewAffine2D
 
 // A Rectangle contains the points (X, Y) where Min.X <= X < Max.X,
 // Min.Y <= Y < Max.Y.
@@ -51,43 +44,7 @@ func Rect(x0, y0, x1, y1 float32) Rectangle {
 }
 
 // Pt is shorthand for Point{X: x, Y: y}.
-func Pt(x, y float32) Point {
-	return Point{X: x, Y: y}
-}
-
-// Add return the point p+p2.
-func (p Point) Add(p2 Point) Point {
-	return Point{X: p.X + p2.X, Y: p.Y + p2.Y}
-}
-
-// Sub returns the vector p-p2.
-func (p Point) Sub(p2 Point) Point {
-	return Point{X: p.X - p2.X, Y: p.Y - p2.Y}
-}
-
-// Mul returns p scaled by s.
-func (p Point) Mul(s float32) Point {
-	return Point{X: p.X * s, Y: p.Y * s}
-}
-
-// Div returns the vector p/s.
-func (p Point) Div(s float32) Point {
-	return Point{X: p.X / s, Y: p.Y / s}
-}
-
-// In reports whether p is in r.
-func (p Point) In(r Rectangle) bool {
-	return r.Min.X <= p.X && p.X < r.Max.X &&
-		r.Min.Y <= p.Y && p.Y < r.Max.Y
-}
-
-// Round returns the integer point closest to p.
-func (p Point) Round() image.Point {
-	return image.Point{
-		X: int(math.Round(float64(p.X))),
-		Y: int(math.Round(float64(p.Y))),
-	}
-}
+var Pt = f32.Pt
 
 // Size returns r's width and height.
 func (r Rectangle) Size() Point {
@@ -195,6 +152,20 @@ func (r Rectangle) Round() image.Rectangle {
 	}
 }
 
+// fRect converts a rectangle to a f32internal.Rectangle.
+func FRect(r image.Rectangle) Rectangle {
+	return Rectangle{
+		Min: FPt(r.Min), Max: FPt(r.Max),
+	}
+}
+
+// Fpt converts an point to a f32.Point.
+func FPt(p image.Point) Point {
+	return Point{
+		X: float32(p.X), Y: float32(p.Y),
+	}
+}
+
 func ceil(v float32) int {
 	return int(math.Ceil(float64(v)))
 }

internal/scene/scene.go

@@ -11,7 +11,7 @@ import (
 	"math"
 	"unsafe"
 
-	"gioui.org/f32"
+	"gioui.org/internal/f32"
 )
 
 type Op uint32

internal/stroke/stroke.go

@@ -29,7 +29,7 @@ import (
 	"encoding/binary"
 	"math"
 
-	"gioui.org/f32"
+	"gioui.org/internal/f32"
 	"gioui.org/internal/ops"
 	"gioui.org/internal/scene"
 )

io/router/pointer.go

@@ -7,6 +7,7 @@ import (
 	"io"
 
 	"gioui.org/f32"
+	f32internal "gioui.org/internal/f32"
 	"gioui.org/internal/ops"
 	"gioui.org/io/event"
 	"gioui.org/io/key"
@@ -189,13 +190,6 @@ func (c *pointerCollector) pushArea(kind areaKind, bounds image.Rectangle) {
 	})
 }
 
-// fpt converts a point to a f32.Point.
-func fpt(p image.Point) f32.Point {
-	return f32.Point{
-		X: float32(p.X), Y: float32(p.Y),
-	}
-}
-
 func (c *pointerCollector) popArea() {
 	n := len(c.nodeStack)
 	c.state.nodePlusOne = c.nodeStack[n-1] + 1
@@ -911,8 +905,8 @@ func firstMimeMatch(src, tgt *pointerHandler) (first string, matched bool) {
 }
 
 func (op *areaOp) Hit(pos f32.Point) bool {
-	pos = pos.Sub(fpt(op.rect.Min))
-	size := fpt(op.rect.Size())
+	pos = pos.Sub(f32internal.FPt(op.rect.Min))
+	size := f32internal.FPt(op.rect.Size())
 	switch op.kind {
 	case areaRect:
 		return 0 <= pos.X && pos.X < size.X &&
@@ -931,9 +925,9 @@ func (op *areaOp) Hit(pos f32.Point) bool {
 }
 
 func (a *areaNode) bounds() image.Rectangle {
-	return f32.Rectangle{
-		Min: a.trans.Transform(fpt(a.area.rect.Min)),
-		Max: a.trans.Transform(fpt(a.area.rect.Max)),
+	return f32internal.Rectangle{
+		Min: a.trans.Transform(f32internal.FPt(a.area.rect.Min)),
+		Max: a.trans.Transform(f32internal.FPt(a.area.rect.Max)),
 	}.Round()
 }
 

io/router/router.go

@@ -19,6 +19,7 @@ import (
 	"time"
 
 	"gioui.org/f32"
+	f32internal "gioui.org/internal/f32"
 	"gioui.org/internal/ops"
 	"gioui.org/io/clipboard"
 	"gioui.org/io/event"
@@ -242,7 +243,7 @@ func (q *Router) ScrollFocus(dist image.Point) {
 	q.pointer.queue.Deliver(area, pointer.Event{
 		Type:   pointer.Scroll,
 		Source: pointer.Touch,
-		Scroll: fpt(dist),
+		Scroll: f32internal.FPt(dist),
 	}, &q.handlers)
 }
 

op/clip/clip.go

@@ -9,6 +9,7 @@ import (
 	"math"
 
 	"gioui.org/f32"
+	f32internal "gioui.org/internal/f32"
 	"gioui.org/internal/ops"
 	"gioui.org/internal/scene"
 	"gioui.org/internal/stroke"
@@ -51,7 +52,7 @@ func (p Op) add(o *op.Ops) {
 	if !path.hasSegments && p.width > 0 {
 		switch p.path.shape {
 		case ops.Rect:
-			b := frect(path.bounds)
+			b := f32internal.FRect(path.bounds)
 			var rect Path
 			rect.Begin(o)
 			rect.MoveTo(b.Min)
@@ -129,7 +130,7 @@ type Path struct {
 	macro       op.MacroOp
 	start       f32.Point
 	hasSegments bool
-	bounds      f32.Rectangle
+	bounds      f32internal.Rectangle
 	hash        maphash.Hash
 }
 
@@ -219,7 +220,7 @@ func (p *Path) cmd(data []byte, c scene.Command) {
 func (p *Path) expand(pt f32.Point) {
 	if !p.hasSegments {
 		p.hasSegments = true
-		p.bounds = f32.Rectangle{Min: pt, Max: pt}
+		p.bounds = f32internal.Rectangle{Min: pt, Max: pt}
 	} else {
 		b := p.bounds
 		if pt.X < b.Min.X {
@@ -339,17 +340,3 @@ func (o Outline) Op() Op {
 		outline: true,
 	}
 }
-
-// frect converts a rectangle to a f32.Rectangle.
-func frect(r image.Rectangle) f32.Rectangle {
-	return f32.Rectangle{
-		Min: fpt(r.Min), Max: fpt(r.Max),
-	}
-}
-
-// fpt converts an point to a f32.Point.
-func fpt(p image.Point) f32.Point {
-	return f32.Point{
-		X: float32(p.X), Y: float32(p.Y),
-	}
-}

op/clip/shapes.go

@@ -7,6 +7,7 @@ import (
 	"math"
 
 	"gioui.org/f32"
+	f32internal "gioui.org/internal/f32"
 	"gioui.org/internal/ops"
 	"gioui.org/op"
 )
@@ -81,7 +82,7 @@ func (rr RRect) Path(ops *op.Ops) PathSpec {
 	const iq = 1 - q
 
 	se, sw, nw, ne := float32(rr.SE), float32(rr.SW), float32(rr.NW), float32(rr.NE)
-	rrf := frect(rr.Rect)
+	rrf := f32internal.FRect(rr.Rect)
 	w, n, e, s := rrf.Min.X, rrf.Min.Y, rrf.Max.X, rrf.Max.Y
 
 	p.MoveTo(f32.Point{X: w + nw, Y: n})
@@ -133,7 +134,7 @@ func (e Ellipse) Path(o *op.Ops) PathSpec {
 	var p Path
 	p.Begin(o)
 
-	bf := frect(bounds)
+	bf := f32internal.FRect(bounds)
 	center := bf.Max.Add(bf.Min).Mul(.5)
 	diam := bf.Dx()
 	r := diam * .5