go.mod

@@ -4,7 +4,7 @@ go 1.13
 
 require (
 	gioui.org v0.0.0-20191126175243-2ca2e5462f16
-	git.wow.st/gmp/ble v0.0.0-20191127164604-2af636b9461a
+	git.wow.st/gmp/ble v0.0.0-20191205134941-3bc712870db2
 	github.com/google/go-github/v24 v24.0.1 // indirect
 	golang.org/x/oauth2 v0.0.0-20191122200657-5d9234df094c // indirect
 	gopkg.in/yaml.v2 v2.2.7

main.go

@@ -9,7 +9,6 @@ import (
 	"log"
 	"os"
 	"path"
-	"time"
 
 	"git.wow.st/gmp/ble"
 
@@ -78,25 +77,9 @@ func hrDecode(x []byte) int {
 	}
 }
 
-type Stopwatch struct {
-	lasttime time.Time
-	elapsed time.Time
-	running bool
-	startstopBtn *widget.Button
-	resetBtn *widget.Button
-	h, m, s int
-}
-
-func NewStopwatch() Stopwatch {
-	return Stopwatch{
-		startstopBtn: &widget.Button{},
-		resetBtn: &widget.Button{},
-	}
-}
-
 func eventloop() {
 	w := app.NewWindow(
-		app.Size(unit.Dp(350), unit.Dp(600)),
+		app.Size(unit.Dp(400), unit.Dp(400)),
 		app.Title("HRM"),
 	)
 	gofont.Register()
@@ -119,7 +102,6 @@ func eventloop() {
 	state := "starting"
 	var hr int
 	var periph ble.Peripheral
-	var wide bool
 	periphs := make([]ble.Peripheral, 0)
 	btns := make([]*widget.Button, 0)
 	backBtn := &widget.Button{}
@@ -128,42 +110,22 @@ func eventloop() {
 
 	f := &layout.Flex{Axis: layout.Vertical}
 	offpage = func() {
-		f.Layout(gtx,
+		c1 := f.Rigid(gtx, func() {
-			f.Rigid(gtx, func() {
-				th.Body1("Heart Rate Monitor").Layout(gtx)
-			}),
-			f.Rigid(gtx, func() {
-				th.Body1("Bluetooth is Powered Off").Layout(gtx)
-			}),
-		)
-	}
-
-	appname := func() {
-		layout.Align(layout.Center).Layout(gtx, func() {
 			th.Body1("Heart Rate Monitor").Layout(gtx)
 		})
+		c2 := f.Rigid(gtx, func() {
+			th.Body1("Bluetooth is Powered Off").Layout(gtx)
+		})
+		f.Layout(gtx, c1, c2)
 	}
-	appstate := func() {
+	scanpage = func() {
-		layout.Align(layout.Center).Layout(gtx, func() {
+		c1 := f.Rigid(gtx, func() {
+			th.Body1("Heart Rate Monitor").Layout(gtx)
+		})
+		c2 := f.Rigid(gtx, func() {
 			th.Body1(state).Layout(gtx)
 		})
-	}
+		c3 := f.Rigid(gtx, func() {
-	periphname := func() {
-		layout.Align(layout.Center).Layout(gtx, func() {
-			th.Body1("COOSPO").Layout(gtx)
-		})
-	}
-
-	leftbar := func() {
-		f := &layout.Flex{Axis: layout.Vertical}
-		f.Layout(gtx,
-			f.Rigid(gtx, appname),
-			f.Rigid(gtx, func() { th.Body1("").Layout(gtx) }),
-			f.Rigid(gtx, appstate),
-		)
-	}
-
-	scanlist := func() {
 			lst := &layout.List{Axis: layout.Vertical}
 			lst.Layout(gtx, len(periphs), func(i int) {
 				gtx.Constraints.Width.Min = gtx.Constraints.Width.Max
@@ -179,30 +141,21 @@ func eventloop() {
 					w.Invalidate()
 				}
 			})
-	}
+		})
-
+		f.Layout(gtx, c1, c2, c3)
-	scanpage = func() {
-		if wide {
-			f2 := &layout.Flex{Axis: layout.Horizontal}
-			f2.Layout(gtx,
-				f2.Flex(gtx, 0.2, leftbar),
-				f2.Rigid(gtx, scanlist),
-			)
-		} else {
-			f.Layout(gtx,
-				f.Rigid(gtx, appname),
-				f.Rigid(gtx, appstate),
-				f.Rigid(gtx, scanlist),
-			)
-		}
 	}
 
 	connpage = func() {
-		f.Layout(gtx,
+		c1 := f.Rigid(gtx, func() {
-			f.Rigid(gtx, appname),
+			th.Body1("Heart Rate Monitor").Layout(gtx)
-			f.Rigid(gtx, appstate),
+		})
-			f.Rigid(gtx, periphname),
+		c2 := f.Rigid(gtx, func() {
-			f.Rigid(gtx, func() {
+			th.Body1("Connecting").Layout(gtx)
+		})
+		c3 := f.Rigid(gtx, func() {
+			th.Body1(periph.Name).Layout(gtx)
+		})
+		c4 := f.Rigid(gtx, func() {
 			th.Button("Cancel").Layout(gtx, backBtn)
 			if backBtn.Clicked(gtx) {
 				ble.CancelConnection(periph)
@@ -213,16 +166,35 @@ func eventloop() {
 				state = "scanning"
 				page = scanpage
 			}
-			}),
+		})
-		)
+		f.Layout(gtx, c1, c2, c3, c4)
 	}
 
-	hrcircle := func() int {
+	hrpage = func() {
-		var w, h1 float32
+		c1 := f.Rigid(gtx, func() {
-		layout.Align(layout.Center).Layout(gtx, func() {
+			th.Body1("Heart Rate Monitor").Layout(gtx)
+		})
+		c2 := f.Rigid(gtx, func() {
+			th.Body1(periph.Name).Layout(gtx)
+		})
+		c4 := f.Rigid(gtx, func() {
+			layout.UniformInset(unit.Dp(2)).Layout(gtx, func() {
+				th.Button("Stop").Layout(gtx, backBtn)
+			})
+			if backBtn.Clicked(gtx) {
+				ble.Disconnect(periph)
+				periphs = periphs[:0]
+				Config.Autoconnect = ""
+				saveConfig()
+				b.Scan()
+				state = "scanning"
+				page = scanpage
+			}
+		})
+		c3 := f.Rigid(gtx, func() {
 			blue := color.RGBA{0x3f, 0x51, 0xb5, 255}
 			white := color.RGBA{255, 255, 255, 255}
-			w, h1 = float32(gtx.Constraints.Width.Max), float32(gtx.Constraints.Height.Max)
+			w, h1 := float32(gtx.Constraints.Width.Max), float32(gtx.Constraints.Height.Max)
 			if w < h1 {
 				h1 = w
 			}
@@ -249,135 +221,13 @@ func eventloop() {
 			})
 			gtx.Dimensions.Size = image.Point{int(h1), int(h1)}
 		})
-		return int(h1)
+		f.Layout(gtx, c1, c2, c3, c4)
-	}
-
-	sw := NewStopwatch()
-
-	stopwatch := func() {
-		startstoptxt := "start"
-		if sw.running {
-			sw.elapsed = sw.elapsed.Add(time.Since(sw.lasttime))
-			startstoptxt = "stop"
-		}
-		sw.lasttime = time.Now()
-		f := layout.Flex{Axis: layout.Vertical}
-		f.Layout(gtx,
-			f.Rigid(gtx, func() {
-				layout.Align(layout.Center).Layout(gtx, func() {
-					gtx.Constraints.Width.Max = 1e6
-					th.H4(sw.elapsed.Format("15:04:05.00")).Layout(gtx)
-				})
-			}),
-			f.Rigid(gtx, func() {
-				f2 := layout.Flex{Axis: layout.Horizontal}
-				gtx.Constraints.Height.Min = 100
-				f2.Layout(gtx,
-					f2.Flex(gtx, 0.5, func() {
-						layout.UniformInset(unit.Dp(2)).Layout(gtx, func() {
-							th.Button(startstoptxt).Layout(gtx, sw.startstopBtn)
-						})
-					}),
-					f2.Flex(gtx, 0.5, func() {
-						layout.UniformInset(unit.Dp(2)).Layout(gtx, func() {
-							th.Button("reset").Layout(gtx, sw.resetBtn)
-						})
-					}),
-				)
-				if sw.startstopBtn.Clicked(gtx) {
-					if sw.running {
-						sw.running = false
-					} else {
-						sw.running = true
-					}
-				}
-				if sw.resetBtn.Clicked(gtx) {
-					sw.elapsed = time.Time{}
-					sw.running = false
-				}
-			}),
-		)
-	}
-
-	swidth := new(int)
-	*swidth = 900
-	hrpage = func() {
-		stopbtn := func() {
-			gtx.Constraints.Width.Min = *swidth
-			gtx.Constraints.Height.Min = 100
-			layout.UniformInset(unit.Dp(2)).Layout(gtx, func() {
-				th.Button("Disconnect").Layout(gtx, backBtn)
-			})
-		}
-		if wide {
-			f2 := &layout.Flex{Axis: layout.Horizontal}
-			f2.Layout(gtx,
-				f2.Flex(gtx, 0.4, func() {
-					f3 := &layout.Flex{Axis: layout.Vertical}
-					c1 := f3.Rigid(gtx, func() {
-						appname()
-						*swidth = gtx.Dimensions.Size.X
-					})
-					c2 := f3.Rigid(gtx, func() {
-						periphname()
-						s2 := gtx.Dimensions.Size.X
-						if s2 > *swidth {
-							*swidth = s2
-						}
-					})
-					c3 := f3.Rigid(gtx, stopwatch)
-					c4 := f3.Rigid(gtx, stopbtn)
-					f3.Layout(gtx,
-						c1,
-						f3.Rigid(gtx, appstate),
-						c2,
-						f3.Flex(gtx, 1.0, func() { th.Body1("").Layout(gtx) }),
-						c3,
-						c4,
-					)
-				}),
-				f2.Flex(gtx, 0.6, func() { hrcircle() }),
-			)
-		} else { // !wide
-			c1 := f.Rigid(gtx, func() {
-				layout.Align(layout.Center).Layout(gtx, func() {
-					gtx.Constraints.Width.Min = *swidth
-					gtx.Constraints.Width.Max = *swidth
-					stopwatch()
-				})
-			})
-			c2 := f.Rigid(gtx, func() {
-				layout.Align(layout.Center).Layout(gtx, stopbtn)
-			})
-			f.Layout(gtx,
-				f.Rigid(gtx, appname),
-				f.Rigid(gtx, appstate),
-				f.Rigid(gtx, periphname),
-				f.Flex(gtx, 1.0, func() {
-					*swidth = hrcircle()
-				}),
-				c1,
-				c2,
-			)
-		}
-		if backBtn.Clicked(gtx) {
-			ble.Disconnect(periph)
-			periphs = periphs[:0]
-			Config.Autoconnect = ""
-			saveConfig()
-			b.Scan()
-			state = "scanning"
-			page = scanpage
-		}
 	}
 
 	page = offpage
 
-	t := time.NewTicker(time.Second/30)
 	for {
 		select {
-		case <-t.C:
-			w.Invalidate()
 		case e := <-b.Events():
 			switch e := e.(type) {
 			case ble.UpdateStateEvent:
@@ -447,11 +297,6 @@ func eventloop() {
 				return
 			case system.FrameEvent:
 				gtx.Reset(e.Config, e.Size)
-				if e.Size.X > e.Size.Y {
-					wide = true
-				} else {
-					wide = false
-				}
 				resetSysinset(e.Insets)
 				sysinset.Layout(gtx, func() {
 					margin.Layout(gtx, page)