package zenity import ( "image/color" "sync" "unsafe" "github.com/ncruces/zenity/internal/win" ) var ( savedColors [16]uint32 colorsMutex sync.Mutex ) func init() { for i := range savedColors { savedColors[i] = 0xffffff } } func selectColor(opts options) (color.Color, error) { // load custom colors colorsMutex.Lock() customColors := savedColors colorsMutex.Unlock() var args win.CHOOSECOLOR args.StructSize = uint32(unsafe.Sizeof(args)) args.Owner, _ = opts.attach.(win.HWND) args.CustColors = &customColors if opts.color != nil { args.Flags |= win.CC_RGBINIT n := color.NRGBAModel.Convert(opts.color).(color.NRGBA) args.RgbResult = uint32(n.R) | uint32(n.G)<<8 | uint32(n.B)<<16 } if opts.showPalette { args.Flags |= win.CC_PREVENTFULLOPEN } else { args.Flags |= win.CC_FULLOPEN } defer setup()() unhook, err := hookDialog(opts.ctx, opts.windowIcon, opts.title, nil) if err != nil { return nil, err } defer unhook() ok := win.ChooseColor(&args) if opts.ctx != nil && opts.ctx.Err() != nil { return nil, opts.ctx.Err() } if !ok { return nil, win.CommDlgError() } // save custom colors back colorsMutex.Lock() savedColors = customColors colorsMutex.Unlock() r := uint8(args.RgbResult >> 0) g := uint8(args.RgbResult >> 8) b := uint8(args.RgbResult >> 16) return color.RGBA{R: r, G: g, B: b, A: 255}, nil }