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rui/demo/touchEventsDemo.go

123 lines
3.0 KiB
Go

package main
import (
"fmt"
"strconv"
"strings"
"github.com/anoshenko/rui"
)
const touchEventsDemoText = `
GridLayout {
width = 100%, height = 100%, cell-height = "1fr, auto",
content = [
GridLayout {
padding = 12px,
content = [
GridLayout {
id = touchEventsTest, cell-horizontal-align = center, cell-vertical-align = center,
height = 100%,
border = _{ style = solid, width = 1px, color = gray},
content = [
TextView {
id = touchEventsText, text = "Test box",
}
]
}
],
},
Resizable {
row = 1, side = top, background-color = lightgrey, height = 300px,
content = EditView {
id = touchEventsLog, type = multiline, read-only = true, wrap = true,
}
},
]
}
`
func createTouchEventsDemo(session rui.Session) rui.View {
view := rui.CreateViewFromText(session, touchEventsDemoText)
if view == nil {
return nil
}
addToLog := func(tag string, event rui.TouchEvent) {
var buffer strings.Builder
appendBool := func(name string, value bool) {
buffer.WriteString(`, `)
buffer.WriteString(name)
if value {
buffer.WriteString(` = true`)
} else {
buffer.WriteString(` = false`)
}
}
/*
appendInt := func(name string, value int) {
buffer.WriteString(`, `)
buffer.WriteString(name)
buffer.WriteString(` = `)
buffer.WriteString(strconv.Itoa(value))
}*/
appendFloat := func(name string, value float64) {
buffer.WriteString(fmt.Sprintf(`, %s = %g`, name, value))
}
appendPoint := func(name string, x, y float64) {
buffer.WriteString(fmt.Sprintf(`, %s = (%g:%g)`, name, x, y))
}
buffer.WriteString(tag)
buffer.WriteString(`: TimeStamp = `)
buffer.WriteString(strconv.FormatUint(event.TimeStamp, 10))
buffer.WriteString(`, touches = [`)
for i, touch := range event.Touches {
if i > 0 {
buffer.WriteString(`, `)
}
buffer.WriteString(`{ Identifier = `)
buffer.WriteString(strconv.Itoa(touch.Identifier))
appendPoint("(X:Y)", touch.X, touch.Y)
appendPoint("Client (X:Y)", touch.ClientX, touch.ClientY)
appendPoint("Screen (X:Y)", touch.ScreenX, touch.ScreenY)
appendPoint("Radius (X:Y)", touch.RadiusX, touch.RadiusY)
appendFloat("RotationAngle", touch.RotationAngle)
appendFloat("Force", touch.Force)
buffer.WriteString(`}`)
}
buffer.WriteString(`]`)
appendBool("CtrlKey", event.CtrlKey)
appendBool("ShiftKey", event.ShiftKey)
appendBool("AltKey", event.AltKey)
appendBool("MetaKey", event.MetaKey)
buffer.WriteString(";\n\n")
rui.AppendEditText(view, "touchEventsLog", buffer.String())
rui.ScrollViewToEnd(view, "touchEventsLog")
}
rui.SetParams(view, "touchEventsTest", rui.Params{
rui.TouchStart: func(v rui.View, event rui.TouchEvent) {
addToLog("touch-start", event)
},
rui.TouchEnd: func(v rui.View, event rui.TouchEvent) {
addToLog("touch-end", event)
},
rui.TouchCancel: func(v rui.View, event rui.TouchEvent) {
addToLog("touch-cancel", event)
},
rui.TouchMove: func(v rui.View, event rui.TouchEvent) {
addToLog("touch-move", event)
},
})
return view
}