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