doodle/editor_ui_palette.go

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package doodle
import (
"git.kirsle.net/apps/doodle/balance"
"git.kirsle.net/apps/doodle/render"
"git.kirsle.net/apps/doodle/ui"
)
// setupPaletteFrame configures the Color Palette tab for Edit Mode.
// This is a subroutine of editor_ui.go#SetupPalette()
func (u *EditorUI) setupPaletteFrame(window *ui.Window) *ui.Frame {
frame := ui.NewFrame("Palette Tab")
frame.SetBackground(balance.WindowBackground)
// Handler function for the radio buttons being clicked.
onClick := func(p render.Point) {
name := u.selectedSwatch
swatch, ok := u.Canvas.Palette.Get(name)
if !ok {
log.Error("Palette onClick: couldn't get swatch named '%s' from palette", name)
return
}
log.Info("Set swatch: %s", swatch)
u.Canvas.SetSwatch(swatch)
}
// Draw the radio buttons for the palette.
if u.Canvas != nil && u.Canvas.Palette != nil {
for _, swatch := range u.Canvas.Palette.Swatches {
label := ui.NewLabel(ui.Label{
Text: swatch.Name,
Font: balance.StatusFont,
})
label.Font.Color = swatch.Color.Darken(40)
btn := ui.NewRadioButton("palette", &u.selectedSwatch, swatch.Name, label)
btn.Handle(ui.Click, onClick)
u.Supervisor.Add(btn)
frame.Pack(btn, ui.Pack{
Anchor: ui.N,
Fill: true,
PadY: 4,
})
}
}
return frame
}