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//
// rhlibrary
//
// The Radio Helsinki Rivendell Library
//
//
// Copyright (C) 2016 Christian Pointner <equinox@helsinki.at>
//
// This file is part of rhlibrary.
//
// rhlibrary is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// any later version.
//
// rhlibrary is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with rhlibrary. If not, see <http://www.gnu.org/licenses/>.
//
package main
import (
"time"
"code.helsinki.at/rhrd-go/player"
"github.com/gotk3/gotk3/glib"
"github.com/gotk3/gotk3/gtk"
)
var (
playIcon *gtk.Image = nil
pauseIcon *gtk.Image = nil
)
func addPlayPauseButton(box *gtk.Box, p *player.Player) (err error) {
var btn *gtk.Button
if btn, err = gtk.ButtonNew(); err != nil {
return
}
if playIcon, err = gtk.ImageNewFromIconName("media-playback-start", gtk.ICON_SIZE_LARGE_TOOLBAR); err != nil {
return
}
if pauseIcon, err = gtk.ImageNewFromIconName("media-playback-pause", gtk.ICON_SIZE_LARGE_TOOLBAR); err != nil {
return
}
btn.SetSizeRequest(42, 42)
btn.SetImage(playIcon)
btn.SetSensitive(false)
btn.Connect("clicked", func(_ *gtk.Button) {
if err := p.PlayPause(); err != nil {
rhdl.Println(err) // TODO: feedback at GUI?
}
})
p.AddStateChangeHandler(func(state player.State, _ interface{}) bool {
glib.IdleAdd(func() {
switch state {
case player.IDLE:
btn.SetImage(playIcon)
btn.SetSensitive(false)
case player.PAUSED:
btn.SetImage(playIcon)
btn.SetSensitive(true)
case player.PLAYING:
btn.SetImage(pauseIcon)
btn.SetSensitive(true)
}
})
return true
}, nil)
box.PackStart(btn, false, false, 0)
return
}
func addStopButton(box *gtk.Box, p *player.Player) (err error) {
var btn *gtk.Button
if btn, err = gtk.ButtonNewFromIconName("media-playback-stop", gtk.ICON_SIZE_LARGE_TOOLBAR); err != nil {
return
}
btn.SetSizeRequest(42, 42)
btn.SetSensitive(false)
btn.Connect("clicked", func(_ *gtk.Button) {
if err := p.Stop(); err != nil {
rhdl.Println(err) // TODO: feedback at GUI?
}
})
p.AddStateChangeHandler(func(state player.State, _ interface{}) bool {
glib.IdleAdd(func() {
switch state {
case player.IDLE:
btn.SetSensitive(false)
case player.PAUSED:
btn.SetSensitive(true)
case player.PLAYING:
btn.SetSensitive(true)
}
})
return true
}, nil)
box.PackStart(btn, false, false, 0)
return
}
func addButtons(grid *gtk.Grid, p *player.Player) (err error) {
var box *gtk.Box
if box, err = gtk.BoxNew(gtk.ORIENTATION_HORIZONTAL, 2); err != nil {
return
}
if err = addPlayPauseButton(box, p); err != nil {
return
}
if err = addStopButton(box, p); err != nil {
return
}
grid.Attach(box, 1, 1, 1, 1)
return
}
func addMeter(grid *gtk.Grid, p *player.Player) error {
widget, err := getVUMeterWidget(p)
if err != nil {
return err
}
grid.Attach(widget, 2, 1, 1, 1)
return nil
}
func getPlayTimeString(duration, pos time.Duration, countdown bool) string {
t := time.Unix(0, 0).UTC()
if countdown {
return t.Add(duration).Add(-1 * pos).Format("-15:04:05.0")
}
return t.Add(pos).Format(" 15:04:05.0")
}
func addPlayTime(grid *gtk.Grid, p *player.Player) (err error) {
var btn *gtk.Button
if btn, err = gtk.ButtonNew(); err != nil {
return err
}
countdown := false
duration := time.Duration(0)
pos := time.Duration(0)
p.AddUpdateHandler(func(d time.Duration, p time.Duration, _ player.Meter, _ interface{}) bool {
glib.IdleAdd(func() {
duration = d
pos = p
btn.SetLabel(getPlayTimeString(duration, pos, countdown))
})
return true
}, nil)
btn.SetSizeRequest(128, 42)
btn.SetRelief(gtk.RELIEF_NONE)
btn.SetFocusOnClick(false)
btn.SetLabel(getPlayTimeString(duration, pos, countdown))
btn.Connect("clicked", func(_ *gtk.Button) {
countdown = !countdown
btn.SetLabel(getPlayTimeString(duration, pos, countdown))
})
if err = setCssStyle(&btn.Widget, ".button { border: 1px solid; border-color: #a1a1a1; font-weight: bold; font-size: 1.3em; }"); err != nil {
return
}
grid.Attach(btn, 3, 1, 1, 1)
return
}
func addScrubber(grid *gtk.Grid, p *player.Player) (err error) {
var scale *gtk.Scale
if scale, err = gtk.ScaleNew(gtk.ORIENTATION_HORIZONTAL, nil); err != nil {
return
}
if err = scale.SetProperty("draw-value", false); err != nil {
return
}
scale.SetRange(0, 1)
scale.SetValue(0)
scale.Connect("change-value", func(s *gtk.Scale, _ interface{}, pos float64) {
if err := p.Seek(pos); err != nil {
rhdl.Println(err) // TODO: feedback at GUI?
}
})
scale.SetSensitive(false)
p.AddUpdateHandler(func(duration time.Duration, pos time.Duration, _ player.Meter, _ interface{}) bool {
glib.IdleAdd(func() {
if duration > 0 {
scale.SetValue(float64(pos) / float64(duration))
} else {
scale.SetValue(0)
}
})
return true
}, nil)
p.AddStateChangeHandler(func(state player.State, _ interface{}) bool {
glib.IdleAdd(func() {
switch state {
case player.IDLE:
scale.SetSensitive(false)
case player.PAUSED:
scale.SetSensitive(true)
case player.PLAYING:
scale.SetSensitive(true)
}
})
return true
}, nil)
grid.Attach(scale, 1, 2, 3, 1)
return
}
func getPlayerWidget(p *player.Player) (gtk.IWidget, error) {
var err error
var grid *gtk.Grid
if grid, err = gtk.GridNew(); err != nil {
return nil, err
}
grid.SetOrientation(gtk.ORIENTATION_HORIZONTAL)
grid.SetRowSpacing(8)
grid.SetColumnSpacing(13)
if err = addButtons(grid, p); err != nil {
return nil, err
}
if err = addMeter(grid, p); err != nil {
return nil, err
}
if err = addPlayTime(grid, p); err != nil {
return nil, err
}
if err = addScrubber(grid, p); err != nil {
return nil, err
}
grid.SetHAlign(gtk.ALIGN_CENTER)
return grid, nil
}
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