rui_orig/demo/audioPlayerDemo.go

143 lines
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Go
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2021-09-09 12:08:31 +03:00
package main
import (
"fmt"
"github.com/anoshenko/rui"
)
const audioPlayerDemoText = `
GridLayout {
cell-height = "auto, auto, 1fr, auto", width = 100%, height = 100%,
content = [
ListLayout {
row = 0, orientation = start-to-end, padding = 4px,
content = [
Checkbox {
id = showAudioPlayerControls, content = "Controls"
},
Checkbox {
id = showAudioPlayerLoop, content = "Loop"
},
Checkbox {
id = showAudioPlayerMuted, content = "Muted"
},
],
},
AudioPlayer {
row = 1, id = audioPlayer, src = "https://alxanosoft.com/jazzy-loop-1.mp3",
},
ListLayout {
row = 2, orientation = start-to-end, vertical-align = top, padding = 8px,
content = [
NumberPicker {
id = audioPlayerSlider, width = 200px, type = slider
}
Button {
id = audioPlayerPlay, content = "Play", margin-left = 16px
}
]
},
Resizable {
row = 3, side = top, background-color = lightgrey, height = 200px,
content = EditView {
id = audioPlayerEventsLog, type = multiline, read-only = true, wrap = true,
}
},
]
}`
var audioPlayerPause = true
func createAudioPlayerDemo(session rui.Session) rui.View {
view := rui.CreateViewFromText(session, audioPlayerDemoText)
if view == nil {
return nil
}
createListener := func(event string) func() {
return func() {
rui.AppendEditText(view, "audioPlayerEventsLog", event+"\n")
rui.ScrollViewToEnd(view, "audioPlayerEventsLog")
}
}
createListener2 := func(event string) func(value float64) {
return func(value float64) {
rui.AppendEditText(view, "audioPlayerEventsLog", fmt.Sprintf("%s: %g\n", event, value))
rui.ScrollViewToEnd(view, "audioPlayerEventsLog")
}
}
rui.Set(view, "showAudioPlayerControls", rui.CheckboxChangedEvent, func(state bool) {
rui.Set(view, "audioPlayer", rui.Controls, state)
})
rui.Set(view, "showAudioPlayerLoop", rui.CheckboxChangedEvent, func(state bool) {
rui.Set(view, "audioPlayer", rui.Loop, state)
})
rui.Set(view, "showAudioPlayerMuted", rui.CheckboxChangedEvent, func(state bool) {
rui.Set(view, "audioPlayer", rui.Muted, state)
})
for _, event := range []string{rui.AbortEvent, rui.CanPlayEvent, rui.CanPlayThroughEvent,
rui.CompleteEvent, rui.EmptiedEvent, rui.EndedEvent, rui.LoadStartEvent,
rui.LoadedMetadataEvent, rui.PlayingEvent, rui.SeekedEvent, rui.SeekingEvent,
rui.StalledEvent, rui.SuspendEvent, rui.WaitingEvent} {
rui.Set(view, "audioPlayer", event, createListener(event))
}
for _, event := range []string{rui.DurationChangedEvent, rui.RateChangedEvent, rui.VolumeChangedEvent} {
rui.Set(view, "audioPlayer", event, createListener2(event))
}
rui.Set(view, "audioPlayer", rui.PlayEvent, func() {
rui.AppendEditText(view, "audioPlayerEventsLog", "play-event\n")
rui.ScrollViewToEnd(view, "audioPlayerEventsLog")
rui.Set(view, "audioPlayerPlay", rui.Content, "Pause")
audioPlayerPause = false
})
rui.Set(view, "audioPlayer", rui.PauseEvent, func() {
rui.AppendEditText(view, "audioPlayerEventsLog", "pause-event\n")
rui.ScrollViewToEnd(view, "audioPlayerEventsLog")
rui.Set(view, "audioPlayerPlay", rui.Content, "Play")
audioPlayerPause = true
})
rui.Set(view, "audioPlayer", rui.LoadedDataEvent, func() {
rui.AppendEditText(view, "audioPlayerEventsLog", "loaded-data-event\n")
rui.ScrollViewToEnd(view, "audioPlayerEventsLog")
rui.Set(view, "audioPlayerSlider", rui.Max, rui.MediaPlayerDuration(view, "audioPlayer"))
})
rui.Set(view, "audioPlayer", rui.TimeUpdateEvent, func(time float64) {
rui.AppendEditText(view, "audioPlayerEventsLog", fmt.Sprintf("time-update-event %gs\n", time))
rui.ScrollViewToEnd(view, "audioPlayerEventsLog")
rui.Set(view, "audioPlayerSlider", rui.Value, time)
})
rui.Set(view, "audioPlayer", rui.PlayerErrorEvent, func(code int, message string) {
rui.AppendEditText(view, "audioPlayerEventsLog", fmt.Sprintf("player-error-event: code = %d, message = '%s'\n", code, message))
rui.ScrollViewToEnd(view, "audioPlayerEventsLog")
})
rui.Set(view, "audioPlayerPlay", rui.ClickEvent, func() {
if audioPlayerPause {
rui.MediaPlayerPlay(view, "audioPlayer")
} else {
rui.MediaPlayerPause(view, "audioPlayer")
}
})
rui.Set(view, "audioPlayerSlider", rui.NumberChangedEvent, func(value float64) {
if audioPlayerPause {
rui.SetMediaPlayerCurrentTime(view, "audioPlayer", value)
}
})
return view
}