87 lines
2.5 KiB
Go
87 lines
2.5 KiB
Go
package mujica
|
||
|
||
import (
|
||
"log/slog"
|
||
|
||
"github.com/egoist/mygo/ui"
|
||
|
||
"mujicaui/theme"
|
||
)
|
||
|
||
// ImageOptions configure an Image.
|
||
type ImageOptions struct {
|
||
// Width and Height size the box in DIPs; zero keeps the picture's size,
|
||
// or 160×120 for the placeholder, loading and error states.
|
||
Width, Height float32
|
||
// Crop covers the box and crops the rest; false fits the picture inside.
|
||
Crop bool
|
||
// Alt describes the picture for assistive technology.
|
||
Alt string
|
||
// Loading shows the caller's load in progress.
|
||
Loading bool
|
||
// Err shows the caller's load failure with a retry button.
|
||
Err error
|
||
}
|
||
|
||
// ImageView is a shown Image and what the user did to it this frame.
|
||
type ImageView struct {
|
||
Element *ui.Element
|
||
// Retry reports a click on the retry button of the error state.
|
||
Retry bool
|
||
}
|
||
|
||
// Image shows a *ui.Bitmap or *ui.SVG. A nil src shows a placeholder.
|
||
func Image(c *ui.Context, src ui.ImageSource, opts ImageOptions) ImageView {
|
||
if opts.Width < 0 || opts.Height < 0 {
|
||
panic("mujica: Image Width and Height must not be negative")
|
||
}
|
||
if opts.Err == nil && !opts.Loading && src != nil {
|
||
e := ui.Image(c, src).Radius(theme.ControlRadius)
|
||
if opts.Crop {
|
||
e.Fit(ui.Cover)
|
||
}
|
||
if opts.Width > 0 {
|
||
e.Width(opts.Width)
|
||
}
|
||
if opts.Height > 0 {
|
||
e.Height(opts.Height)
|
||
}
|
||
if opts.Alt != "" {
|
||
e.Label(opts.Alt)
|
||
}
|
||
return ImageView{Element: e}
|
||
}
|
||
k := Tokens(c)
|
||
u := Density(c).Unit()
|
||
w, h := opts.Width, opts.Height
|
||
if w == 0 {
|
||
w = 160
|
||
}
|
||
if h == 0 {
|
||
h = 120
|
||
}
|
||
var v ImageView
|
||
frame := ui.Column(c).Size(w, h).Shrink(0).Center().Gap(u*2).Padding(u*2).Clip().
|
||
Radius(theme.ControlRadius).Background(k.SurfaceHover).Border(theme.BorderWidth, k.Border)
|
||
v.Element = frame
|
||
frame.Children(func() {
|
||
switch {
|
||
case opts.Err != nil:
|
||
frame.Role(ui.RoleGroup).Label(msg(c, "image.error")).Description(opts.Alt).Error(opts.Err.Error())
|
||
Icon(c, "circle-alert", IconOptions{Size: 20, Tone: IconDanger})
|
||
ui.Text(c, msg(c, "image.error")).FontSize(theme.CaptionSize).TextColor(k.Danger).TextAlign(ui.Center)
|
||
if Button(c, msg(c, "image.retry"), ButtonOptions{Variant: Secondary}).Clicked() {
|
||
v.Retry = true
|
||
slog.Debug("mujica: image retry", "alt", opts.Alt)
|
||
}
|
||
case opts.Loading:
|
||
frame.Role(ui.RoleImage).Label(msg(c, "image.loading")).Description(opts.Alt)
|
||
Spinner(c, SpinnerOptions{Size: 20, Label: msg(c, "image.loading")})
|
||
default:
|
||
frame.Role(ui.RoleImage).Label(msg(c, "image.placeholder")).Description(opts.Alt)
|
||
Icon(c, "image", IconOptions{Size: 24, Tone: IconMuted})
|
||
}
|
||
})
|
||
return v
|
||
}
|