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GetCursorImage returns image structure.

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This commit is contained in:
Miroslav Šedivý
2021-02-25 14:03:57 +01:00
parent dc29f71b0c
commit 8f142e4b91
3 changed files with 24 additions and 28 deletions
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28
internal/desktop/xorg/xorg.go
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@ -243,17 +243,33 @@ func GetCursorImage() *types.CursorImage {
cur := C.XGetCursorImage()
defer C.XFree(unsafe.Pointer(cur))
width := uint16(cur.width)
height := uint16(cur.height)
width := int(cur.width)
height := int(cur.height)
// Xlib stores 32-bit data in longs, even if longs are 64-bits long.
pixels := C.GoBytes(unsafe.Pointer(cur.pixels), C.int(width*height*8))
img := image.NewRGBA(image.Rect(0, 0, width, height))
for row := 0; row < height; row++ {
for col := 0; col < width; col++ {
pos := ((row * height) + col) * 8
img.SetRGBA(col, row, color.RGBA{
A: pixels[pos+3],
R: pixels[pos+2],
G: pixels[pos+1],
B: pixels[pos+0],
})
}
}
return &types.CursorImage{
Width: width,
Height: height,
Width: uint16(width),
Height: uint16(height),
Xhot: uint16(cur.xhot),
Yhot: uint16(cur.yhot),
Serial: uint64(cur.cursor_serial),
// Xlib stores 32-bit data in longs, even if longs are 64-bits long.
Pixels: C.GoBytes(unsafe.Pointer(cur.pixels), C.int(width*height*8)),
Image: img,
}
}