54 lines
1.4 KiB
Go
54 lines
1.4 KiB
Go
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package xcursor
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import (
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"github.com/jezek/xgb/xproto"
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"github.com/jezek/xgbutil"
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)
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// CreateCursor sets some default colors for nice and easy cursor creation.
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// Just supply a cursor constant from 'xcursor/cursordef.go'.
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func CreateCursor(xu *xgbutil.XUtil, cursor uint16) (xproto.Cursor, error) {
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return CreateCursorExtra(xu, cursor, 0, 0, 0, 0xffff, 0xffff, 0xffff)
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}
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// CreateCursorExtra features all available parameters to creating a cursor.
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// It will return an error if there is a problem with any of the requests
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// made to create the cursor.
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// (This implies each request is a checked request. The performance loss is
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// probably acceptable since cursors should be created once and reused.)
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func CreateCursorExtra(xu *xgbutil.XUtil, cursor, foreRed, foreGreen,
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foreBlue, backRed, backGreen, backBlue uint16) (xproto.Cursor, error) {
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fontId, err := xproto.NewFontId(xu.Conn())
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if err != nil {
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return 0, err
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}
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cursorId, err := xproto.NewCursorId(xu.Conn())
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if err != nil {
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return 0, err
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}
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err = xproto.OpenFontChecked(xu.Conn(), fontId,
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uint16(len("cursor")), "cursor").Check()
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if err != nil {
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return 0, err
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}
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err = xproto.CreateGlyphCursorChecked(xu.Conn(), cursorId, fontId, fontId,
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cursor, cursor+1,
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foreRed, foreGreen, foreBlue,
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backRed, backGreen, backBlue).Check()
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if err != nil {
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return 0, err
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}
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err = xproto.CloseFontChecked(xu.Conn(), fontId).Check()
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if err != nil {
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return 0, err
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}
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return cursorId, nil
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}
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