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gridviewitem.go
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gridviewitem.go
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package widgets
import (
"context"
"image"
"github.com/dweymouth/supersonic/res"
"github.com/dweymouth/supersonic/ui/layouts"
"fyne.io/fyne/v2"
"fyne.io/fyne/v2/canvas"
"fyne.io/fyne/v2/container"
"fyne.io/fyne/v2/driver/desktop"
"fyne.io/fyne/v2/widget"
)
var _ fyne.Widget = (*GridViewItem)(nil)
var _ fyne.Widget = (*coverImage)(nil)
type coverImage struct {
widget.BaseWidget
Im *ImagePlaceholder
playbtn *canvas.Image
mouseInsideBtn bool
OnPlay func()
OnShowPage func()
OnShowContextMenu func(fyne.Position)
}
var (
playBtnSize = fyne.NewSize(60, 60)
playBtnHoveredSize = fyne.NewSize(65, 65)
)
func newCoverImage(placeholderResource fyne.Resource) *coverImage {
c := &coverImage{}
c.Im = NewImagePlaceholder(placeholderResource, 200)
c.Im.OnTapped = c.Tapped
c.Im.OnTappedSecondary = c.TappedSecondary
c.Im.ScaleMode = canvas.ImageScaleFastest
c.playbtn = &canvas.Image{FillMode: canvas.ImageFillContain, Resource: res.ResPlaybuttonPng}
c.playbtn.SetMinSize(playBtnSize)
c.playbtn.Hidden = true
c.ExtendBaseWidget(c)
return c
}
func (c *coverImage) CreateRenderer() fyne.WidgetRenderer {
return widget.NewSimpleRenderer(
container.NewMax(c.Im, container.NewCenter(c.playbtn)),
)
}
func (c *coverImage) Cursor() desktop.Cursor {
return desktop.PointerCursor
}
func (c *coverImage) Tapped(e *fyne.PointEvent) {
if isInside(c.center(), c.playbtn.Size().Height/2, e.Position) {
if c.OnPlay != nil {
c.OnPlay()
}
return
}
if c.OnShowPage != nil {
c.OnShowPage()
}
}
func (c *coverImage) TappedSecondary(e *fyne.PointEvent) {
if c.OnShowContextMenu != nil {
c.OnShowContextMenu(e.AbsolutePosition)
}
}
func (a *coverImage) MouseIn(*desktop.MouseEvent) {
a.playbtn.Hidden = false
a.Refresh()
}
func (a *coverImage) MouseOut() {
a.mouseInsideBtn = false
a.playbtn.Hidden = true
a.Refresh()
}
func (a *coverImage) MouseMoved(e *desktop.MouseEvent) {
if isInside(a.center(), a.playbtn.MinSize().Height/2, e.Position) {
if !a.mouseInsideBtn {
a.playbtn.SetMinSize(playBtnHoveredSize)
a.playbtn.Refresh()
}
a.mouseInsideBtn = true
} else {
if a.mouseInsideBtn {
a.playbtn.SetMinSize(playBtnSize)
a.playbtn.Refresh()
}
a.mouseInsideBtn = false
}
}
func (a *coverImage) center() fyne.Position {
return fyne.NewPos(a.Size().Width/2, a.Size().Height/2)
}
func (a *coverImage) SetImage(im image.Image) {
a.Im.SetImage(im, true)
}
func (a *coverImage) ResetPlayButton() {
a.playbtn.SetMinSize(playBtnSize)
a.mouseInsideBtn = false
a.playbtn.Hidden = true
}
func isInside(origin fyne.Position, radius float32, point fyne.Position) bool {
x, y := (point.X - origin.X), (point.Y - origin.Y)
return x*x+y*y <= radius*radius
}
type GridViewItemModel struct {
Name string
ID string
CoverArtID string
Secondary string
SecondaryID string
}
type GridViewItem struct {
widget.BaseWidget
itemID string
secondaryID string
primaryText *CustomHyperlink
secondaryText *CustomHyperlink
container *fyne.Container
// updated by GridView
Cover *coverImage
// these fields are used by GridView to track async update tasks
PrevID string
ImgLoadCancel context.CancelFunc
OnPlay func()
OnShowContextMenu func(fyne.Position)
OnShowItemPage func()
OnShowSecondaryPage func()
}
func NewGridViewItem(placeholderResource fyne.Resource) *GridViewItem {
g := &GridViewItem{
primaryText: NewCustomHyperlink(),
secondaryText: NewCustomHyperlink(),
Cover: newCoverImage(placeholderResource),
}
g.primaryText.SetTextStyle(fyne.TextStyle{Bold: true})
g.ExtendBaseWidget(g)
g.Cover.OnPlay = func() {
if g.OnPlay != nil {
g.OnPlay()
}
}
g.Cover.OnShowContextMenu = func(pos fyne.Position) {
if g.OnShowContextMenu != nil {
g.OnShowContextMenu(pos)
}
}
showItemFn := func() {
if g.OnShowItemPage != nil {
g.OnShowItemPage()
}
}
g.Cover.OnShowPage = showItemFn
g.primaryText.OnTapped = showItemFn
g.secondaryText.OnTapped = func() {
if g.OnShowSecondaryPage != nil {
g.OnShowSecondaryPage()
}
}
g.createContainer()
return g
}
func (g *GridViewItem) createContainer() {
info := container.New(&layouts.VboxCustomPadding{ExtraPad: -16}, g.primaryText, g.secondaryText)
c := container.New(&layouts.VboxCustomPadding{ExtraPad: -5}, g.Cover, info)
pad := &layouts.CenterPadLayout{PadLeftRight: 20, PadTopBottom: 10}
g.container = container.New(pad, c)
}
func (g *GridViewItem) Update(model GridViewItemModel) {
g.itemID = model.ID
g.secondaryID = model.SecondaryID
g.primaryText.SetText(model.Name)
g.secondaryText.SetText(model.Secondary)
g.secondaryText.Disabled = model.SecondaryID == ""
g.secondaryText.Refresh()
g.Cover.ResetPlayButton()
}
func (g *GridViewItem) Refresh() {
g.BaseWidget.Refresh()
}
func (g *GridViewItem) ItemID() string {
return g.itemID
}
func (g *GridViewItem) SecondaryID() string {
return g.secondaryID
}
func (g *GridViewItem) CreateRenderer() fyne.WidgetRenderer {
return widget.NewSimpleRenderer(g.container)
}