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box-drawing: big-endian support when setting bits manually

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Daniel Eklöf 2021-07-13 21:13:35 +02:00
parent 9b4796e996
commit 34f42b3dd6
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GPG key ID: 5BBD4992C116573F
1 changed files with 16 additions and 6 deletions
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22
box-drawing.c
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@ -1244,6 +1244,16 @@ draw_box_drawings_double_vertical_and_horizontal(struct buf *buf)
vline(hmid + 2 * thick, buf->height, vmid + 2 * thick, thick);
}
static inline void
set_a1_bit(uint8_t *data, size_t ofs, size_t bit_no)
{
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
data[ofs] |= 1 << bit_no;
#else
data[ofs] |= 1 << (7 - bit_no);
#endif
}
static void
draw_box_drawings_light_arc(struct buf *buf, wchar_t wc)
{
@ -1354,7 +1364,7 @@ draw_box_drawings_light_arc(struct buf *buf, wchar_t wc)
if (fmt == PIXMAN_a1) {
size_t idx = c / 8;
size_t bit_no = c % 8;
data[r * stride + idx] |= 1 << bit_no;
set_a1_bit(data, r * stride + idx, bit_no);
} else
data[r * stride + c] = 0xff;
}
@ -1376,7 +1386,7 @@ draw_box_drawings_light_arc(struct buf *buf, wchar_t wc)
if (fmt == PIXMAN_a1) {
size_t ofs = col / 8;
size_t bit_no = col % 8;
data[row * stride + ofs] |= 1 << bit_no;
set_a1_bit(data, row * stride + ofs, bit_no);
} else
data[row * stride + col] = 0xff;
}
@ -1392,7 +1402,7 @@ draw_box_drawings_light_arc(struct buf *buf, wchar_t wc)
if (fmt == PIXMAN_a1) {
size_t ofs = col / 8;
size_t bit_no = col % 8;
data[row * stride + ofs] |= 1 << bit_no;
set_a1_bit(data, row * stride + ofs, bit_no);
} else
data[row * stride + col] = 0xff;
}
@ -1767,7 +1777,7 @@ draw_light_shade(struct buf *buf)
for (size_t col = 0; col < buf->width; col += 2) {
size_t idx = col / 8;
size_t bit_no = col % 8;
buf->data[row * buf->stride + idx] |= 1 << bit_no;
set_a1_bit(buf->data, row * buf->stride + idx, bit_no);
}
}
}
@ -1790,7 +1800,7 @@ draw_medium_shade(struct buf *buf)
for (size_t col = row % 2; col < buf->width; col += 2) {
size_t idx = col / 8;
size_t bit_no = col % 8;
buf->data[row * buf->stride + idx] |= 1 << bit_no;
set_a1_bit(buf->data, row * buf->stride + idx, bit_no);
}
}
}
@ -1813,7 +1823,7 @@ draw_dark_shade(struct buf *buf)
for (size_t col = 0; col < buf->width; col += 1 + row % 2) {
size_t idx = col / 8;
size_t bit_no = col % 8;
buf->data[row * buf->stride + idx] |= 1 << bit_no;
set_a1_bit(buf->data, row * buf->stride + idx, bit_no);
}
}
}