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refactor(tracker/gioui): Dialog binds to Model during Layout
This commit is contained in:
5684185+vsariola@users.noreply.github.com
parent
5f43bc3067
commit
33f7b5fb6a
@ -1,70 +1,143 @@
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package gioui
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import (
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"fmt"
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"image/color"
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"gioui.org/io/key"
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"gioui.org/layout"
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"gioui.org/op/paint"
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"gioui.org/unit"
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"gioui.org/widget"
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"gioui.org/widget/material"
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"github.com/vsariola/sointu/tracker"
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)
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type Dialog struct {
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BtnAlt widget.Clickable
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BtnOk widget.Clickable
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BtnCancel widget.Clickable
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const DIALOG_MAX_BTNS = 3
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ok, alt, cancel tracker.Action
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}
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type (
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// DialogState is the state that needs to be retained between frames
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DialogState struct {
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Clickables [DIALOG_MAX_BTNS]widget.Clickable
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type DialogStyle struct {
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dialog *Dialog
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Title string
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Text string
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Inset layout.Inset
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TextInset layout.Inset
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AltStyle material.ButtonStyle
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OkStyle material.ButtonStyle
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CancelStyle material.ButtonStyle
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Theme *Theme
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}
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visible bool // this is used to control the visibility of the dialog
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}
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func NewDialog(ok, alt, cancel tracker.Action) *Dialog {
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ret := &Dialog{ok: ok, alt: alt, cancel: cancel}
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// DialogStyle is the style for a dialog that is store in the theme.yml
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DialogStyle struct {
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TitleInset layout.Inset
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TextInset layout.Inset
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ButtonStyle ButtonStyle
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Title LabelStyle
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Text LabelStyle
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Bg color.NRGBA
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Buttons ButtonStyle
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}
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// Dialog is the widget with a Layout method that can be used to display a dialog.
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Dialog struct {
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Theme *Theme
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State *DialogState
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Style *DialogStyle
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Btns [DIALOG_MAX_BTNS]DialogButton
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NumBtns int
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Title string
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Text string
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}
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DialogButton struct {
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Text string
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Action tracker.Action
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}
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)
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func MakeDialog(th *Theme, d *DialogState, title, text string, btns ...DialogButton) Dialog {
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ret := Dialog{
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Theme: th,
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Style: &th.Dialog,
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State: d,
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Title: title,
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Text: text,
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}
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if len(btns) > DIALOG_MAX_BTNS {
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panic(fmt.Sprintf("too many buttons for dialog: %d, max is %d", len(btns), DIALOG_MAX_BTNS))
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}
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copy(ret.Btns[:], btns)
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ret.NumBtns = len(btns)
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d.visible = true
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return ret
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}
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func ConfirmDialog(gtx C, th *Theme, dialog *Dialog, title, text string) DialogStyle {
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ret := DialogStyle{
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dialog: dialog,
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Title: title,
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Text: text,
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Inset: layout.Inset{Top: unit.Dp(12), Bottom: unit.Dp(12), Left: unit.Dp(20), Right: unit.Dp(20)},
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TextInset: layout.Inset{Top: unit.Dp(12), Bottom: unit.Dp(12)},
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AltStyle: material.Button(&th.Material, &dialog.BtnAlt, "Alt"),
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OkStyle: material.Button(&th.Material, &dialog.BtnOk, "Ok"),
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CancelStyle: material.Button(&th.Material, &dialog.BtnCancel, "Cancel"),
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Theme: th,
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}
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for _, b := range [...]*material.ButtonStyle{&ret.AltStyle, &ret.OkStyle, &ret.CancelStyle} {
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b.Background = color.NRGBA{}
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b.Inset = layout.UniformInset(unit.Dp(6))
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b.Color = th.Material.Palette.Fg
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}
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return ret
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func DialogBtn(text string, action tracker.Action) DialogButton {
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return DialogButton{Text: text, Action: action}
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}
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func (d *Dialog) handleKeysForButton(gtx C, btn, next, prev *widget.Clickable) {
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func (d *Dialog) Layout(gtx C) D {
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anyFocused := false
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for i := 0; i < d.NumBtns; i++ {
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anyFocused = anyFocused || gtx.Source.Focused(&d.State.Clickables[i])
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}
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if !anyFocused {
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gtx.Execute(key.FocusCmd{Tag: &d.State.Clickables[d.NumBtns-1]})
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}
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d.handleKeys(gtx)
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paint.Fill(gtx.Ops, d.Style.Bg)
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return layout.Center.Layout(gtx, func(gtx C) D {
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return Popup(d.Theme, &d.State.visible).Layout(gtx, func(gtx C) D {
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return layout.Flex{Axis: layout.Vertical, Alignment: layout.Middle}.Layout(gtx,
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layout.Rigid(func(gtx C) D {
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return d.Style.TitleInset.Layout(gtx, Label(d.Theme, &d.Style.Title, d.Title).Layout)
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}),
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layout.Rigid(func(gtx C) D {
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return d.Style.TextInset.Layout(gtx, Label(d.Theme, &d.Style.Text, d.Text).Layout)
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}),
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layout.Rigid(func(gtx C) D {
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return layout.E.Layout(gtx, func(gtx C) D {
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var fcs [DIALOG_MAX_BTNS]layout.FlexChild
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var actBtns [DIALOG_MAX_BTNS]material.ButtonStyle
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for i := 0; i < d.NumBtns; i++ {
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actBtns[i] = material.Button(&d.Theme.Material, &d.State.Clickables[i], d.Btns[i].Text)
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actBtns[i].Background = d.Style.Buttons.Background
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actBtns[i].Color = d.Style.Buttons.Color
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actBtns[i].TextSize = d.Style.Buttons.TextSize
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actBtns[i].Font = d.Style.Buttons.Font
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actBtns[i].Inset = d.Style.Buttons.Inset
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actBtns[i].CornerRadius = d.Style.Buttons.CornerRadius
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}
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// putting this inside these inside the for loop
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// cause heap escapes, so that's why this ugliness;
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// remember to update if you change the
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// DIAOLG_MAX_BTNS constant
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fcs[0] = layout.Rigid(actBtns[0].Layout)
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fcs[1] = layout.Rigid(actBtns[1].Layout)
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fcs[2] = layout.Rigid(actBtns[2].Layout)
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gtx.Constraints.Min.Y = gtx.Dp(d.Style.Buttons.Height)
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return layout.Flex{Axis: layout.Horizontal, Spacing: layout.SpaceBetween}.Layout(gtx, fcs[:d.NumBtns]...)
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})
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}),
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)
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})
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})
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}
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func (d *Dialog) handleKeys(gtx C) {
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for i := 0; i < d.NumBtns; i++ {
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for d.State.Clickables[i].Clicked(gtx) {
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d.Btns[i].Action.Do()
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}
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d.handleKeysForButton(gtx, (i+d.NumBtns-1)%d.NumBtns, i, (i+1)%d.NumBtns)
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}
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}
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func (d *Dialog) handleKeysForButton(gtx C, prev, cur, next int) {
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cPrev := &d.State.Clickables[prev]
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cCur := &d.State.Clickables[cur]
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cNext := &d.State.Clickables[next]
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for {
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e, ok := gtx.Event(
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key.Filter{Focus: btn, Name: key.NameLeftArrow},
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key.Filter{Focus: btn, Name: key.NameRightArrow},
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key.Filter{Focus: btn, Name: key.NameEscape},
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key.Filter{Focus: btn, Name: key.NameTab, Optional: key.ModShift},
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key.Filter{Focus: cCur, Name: key.NameLeftArrow},
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key.Filter{Focus: cCur, Name: key.NameRightArrow},
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key.Filter{Focus: cCur, Name: key.NameEscape},
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key.Filter{Focus: cCur, Name: key.NameTab, Optional: key.ModShift},
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)
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if !ok {
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break
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@ -72,68 +145,12 @@ func (d *Dialog) handleKeysForButton(gtx C, btn, next, prev *widget.Clickable) {
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if e, ok := e.(key.Event); ok && e.State == key.Press {
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switch {
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case e.Name == key.NameLeftArrow || (e.Name == key.NameTab && e.Modifiers.Contain(key.ModShift)):
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gtx.Execute(key.FocusCmd{Tag: prev})
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gtx.Execute(key.FocusCmd{Tag: cPrev})
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case e.Name == key.NameRightArrow || (e.Name == key.NameTab && !e.Modifiers.Contain(key.ModShift)):
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gtx.Execute(key.FocusCmd{Tag: next})
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gtx.Execute(key.FocusCmd{Tag: cNext})
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case e.Name == key.NameEscape:
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d.cancel.Do()
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d.Btns[d.NumBtns-1].Action.Do() // last button is always the cancel button
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}
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}
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}
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}
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func (d *Dialog) handleKeys(gtx C) {
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for d.BtnOk.Clicked(gtx) {
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d.ok.Do()
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}
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for d.BtnAlt.Clicked(gtx) {
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d.alt.Do()
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}
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for d.BtnCancel.Clicked(gtx) {
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d.cancel.Do()
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}
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if d.alt.Enabled() && d.cancel.Enabled() {
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d.handleKeysForButton(gtx, &d.BtnAlt, &d.BtnCancel, &d.BtnOk)
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d.handleKeysForButton(gtx, &d.BtnCancel, &d.BtnOk, &d.BtnAlt)
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d.handleKeysForButton(gtx, &d.BtnOk, &d.BtnAlt, &d.BtnCancel)
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} else if d.ok.Enabled() {
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d.handleKeysForButton(gtx, &d.BtnOk, &d.BtnCancel, &d.BtnCancel)
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d.handleKeysForButton(gtx, &d.BtnCancel, &d.BtnOk, &d.BtnOk)
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} else {
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d.handleKeysForButton(gtx, &d.BtnCancel, &d.BtnCancel, &d.BtnCancel)
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}
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}
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func (d *DialogStyle) Layout(gtx C) D {
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if !gtx.Source.Focused(&d.dialog.BtnOk) && !gtx.Source.Focused(&d.dialog.BtnCancel) && !gtx.Source.Focused(&d.dialog.BtnAlt) {
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gtx.Execute(key.FocusCmd{Tag: &d.dialog.BtnCancel})
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}
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d.dialog.handleKeys(gtx)
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paint.Fill(gtx.Ops, d.Theme.Dialog.Bg)
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visible := true
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return layout.Center.Layout(gtx, func(gtx C) D {
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return Popup(d.Theme, &visible).Layout(gtx, func(gtx C) D {
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return d.Inset.Layout(gtx, func(gtx C) D {
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return layout.Flex{Axis: layout.Vertical, Alignment: layout.Middle}.Layout(gtx,
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layout.Rigid(Label(d.Theme, &d.Theme.Dialog.Title, d.Title).Layout),
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layout.Rigid(Label(d.Theme, &d.Theme.Dialog.Text, d.Text).Layout),
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layout.Rigid(func(gtx C) D {
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return layout.E.Layout(gtx, func(gtx C) D {
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fl := layout.Flex{Axis: layout.Horizontal, Spacing: layout.SpaceBetween}
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ok := layout.Rigid(d.OkStyle.Layout)
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alt := layout.Rigid(d.AltStyle.Layout)
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cancel := layout.Rigid(d.CancelStyle.Layout)
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if d.dialog.alt.Enabled() && d.dialog.cancel.Enabled() {
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return fl.Layout(gtx, ok, alt, cancel)
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}
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if d.dialog.ok.Enabled() {
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return fl.Layout(gtx, ok, cancel)
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}
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return fl.Layout(gtx, cancel)
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})
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}),
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)
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})
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})
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})
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}
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