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box-drawing: LIGHT/HEAVY DOUBLE/TRIPLE/QUADRUPLE HORIZONTAL

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*U+2504
*U+2505
*U+2508
*U+2509
*U+254C
*U+254D
This commit is contained in:
Daniel Eklöf 2021-01-01 14:06:48 +01:00
parent 848bd27dd5
commit 34360fbb7d
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GPG key ID: 5BBD4992C116573F
1 changed files with 130 additions and 6 deletions
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136
box-drawing.c
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@ -136,6 +136,116 @@ draw_box_drawings_heavy_vertical(uint8_t *buf, int width, int height, int stride
vline_middle_down(HEAVY);
}
static void
draw_box_drawings_double_dash_horizontal(uint8_t *buf, int width, int height, int stride, int dpi, int thick, int gap)
{
int dash_width = (width - gap) / 2;
while (dash_width <= 0 && gap > 1) {
gap--;
dash_width = (width - gap) / 2;
}
if (dash_width <= 0) {
hline_middle_left(LIGHT);
hline_middle_right(LIGHT);
return;
}
assert(2 * dash_width + gap <= width);
int x0 = 0;
int x1 = x0 + dash_width + gap;
hline(x0, x0 + dash_width, (height - thick) / 2, thick);
hline(x1, width, (height - thick) / 2, thick);
}
static void
draw_box_drawings_triple_dash_horizontal(uint8_t *buf, int width, int height, int stride, int dpi, int thick, int gap)
{
int dash_width = (width - (2 * gap)) / 3;
while (dash_width <= 0 && gap > 1) {
gap--;
dash_width = (width - (2 * gap)) / 3;
}
if (dash_width <= 0) {
hline_middle_left(LIGHT);
hline_middle_right(LIGHT);
return;
}
assert(3 * dash_width + 2 * gap <= width);
int remaining = width - 3 * dash_width - 2 * gap;
int x0 = 0;
int x1 = x0 + dash_width + gap;
int x2 = x1 + dash_width + remaining + gap;
hline(x0, x0 + dash_width, (height - thick) / 2, thick);
hline(x1, x1 + dash_width + remaining, (height - thick) / 2, thick);
hline(x2, width, (height - thick) / 2, thick);
}
static void
draw_box_drawings_quadruple_dash_horizontal(uint8_t *buf, int width, int height, int stride, int dpi, int thick, int gap)
{
int dash_width = (width - (3 * gap)) / 4;
while (dash_width <= 0 && gap > 1) {
gap--;
dash_width = (width - (3 * gap)) / 4;
}
if (dash_width <= 0) {
hline_middle_left(LIGHT);
hline_middle_right(LIGHT);
return;
}
assert(4 * dash_width + 3 * gap <= width);
int remaining = width - 4 * dash_width - 3 * gap;
int x0 = 0;
int x1 = x0 + dash_width + gap;
int x2 = x1 + dash_width + remaining / 2 + gap;
int x3 = x2 + dash_width + (remaining - remaining / 2) + gap;
hline(x0, x0 + dash_width, (height - thick) / 2, thick);
hline(x1, x1 + dash_width + remaining / 2, (height - thick) / 2, thick);
hline(x2, x2 + dash_width + (remaining - remaining / 2), (height - thick) / 2, thick);
hline(x3, width, (height - thick) / 2, thick);
}
static void
draw_box_drawings_light_triple_dash_horizontal(uint8_t *buf, int width, int height, int stride, int dpi)
{
draw_box_drawings_triple_dash_horizontal(
buf, width, height, stride, dpi, thickness(LIGHT, dpi), thickness(LIGHT, dpi));
}
static void
draw_box_drawings_heavy_triple_dash_horizontal(uint8_t *buf, int width, int height, int stride, int dpi)
{
draw_box_drawings_triple_dash_horizontal(
buf, width, height, stride, dpi, thickness(HEAVY, dpi), thickness(LIGHT, dpi));
}
static void
draw_box_drawings_light_quadruple_dash_horizontal(uint8_t *buf, int width, int height, int stride, int dpi)
{
draw_box_drawings_quadruple_dash_horizontal(
buf, width, height, stride, dpi, thickness(LIGHT, dpi), thickness(LIGHT, dpi));
}
static void
draw_box_drawings_heavy_quadruple_dash_horizontal(uint8_t *buf, int width, int height, int stride, int dpi)
{
draw_box_drawings_quadruple_dash_horizontal(
buf, width, height, stride, dpi, thickness(HEAVY, dpi), thickness(LIGHT, dpi));
}
static void
draw_box_drawings_light_down_and_right(uint8_t *buf, int width, int height, int stride, int dpi)
{
@ -648,6 +758,20 @@ draw_box_drawings_heavy_vertical_and_horizontal(uint8_t *buf, int width, int hei
vline_middle_down(HEAVY);
}
static void
draw_box_drawings_light_double_dash_horizontal(uint8_t *buf, int width, int height, int stride, int dpi)
{
draw_box_drawings_double_dash_horizontal(
buf, width, height, stride, dpi, thickness(LIGHT, dpi), thickness(LIGHT, dpi));
}
static void
draw_box_drawings_heavy_double_dash_horizontal(uint8_t *buf, int width, int height, int stride, int dpi)
{
draw_box_drawings_double_dash_horizontal(
buf, width, height, stride, dpi, thickness(HEAVY, dpi), thickness(LIGHT, dpi));
}
static void
draw_box_drawings_double_horizontal(uint8_t *buf, int width, int height, int stride, int dpi)
{
@ -1585,17 +1709,17 @@ draw_glyph(wchar_t wc, uint8_t *buf, int width, int height, int stride, int dpi)
case 0x2501: draw_box_drawings_heavy_horizontal(buf, width, height, stride, dpi); break;
case 0x2502: draw_box_drawings_light_vertical(buf, width, height, stride, dpi); break;
case 0x2503: draw_box_drawings_heavy_vertical(buf, width, height, stride, dpi); break;
case 0x2504: draw_box_drawings_light_triple_dash_horizontal(buf, width, height, stride, dpi); break;
case 0x2505: draw_box_drawings_heavy_triple_dash_horizontal(buf, width, height, stride, dpi); break;
case 0x2508: draw_box_drawings_light_quadruple_dash_horizontal(buf, width, height, stride, dpi); break;
case 0x2509: draw_box_drawings_heavy_quadruple_dash_horizontal(buf, width, height, stride, dpi); break;
case 0x250c: draw_box_drawings_light_down_and_right(buf, width, height, stride, dpi); break;
case 0x250d: draw_box_drawings_down_light_and_right_heavy(buf, width, height, stride, dpi); break;
case 0x250e: draw_box_drawings_down_heavy_and_right_light(buf, width, height, stride, dpi); break;
case 0x250f: draw_box_drawings_heavy_down_and_right(buf, width, height, stride, dpi); break;
case 0x2504:
case 0x2505:
case 0x2506:
case 0x2507:
case 0x2508:
case 0x2509:
case 0x250a:
case 0x250b:
LOG_WARN("unimplemented: box drawing: wc=%04lx", (long)wc);
@ -1664,9 +1788,9 @@ draw_glyph(wchar_t wc, uint8_t *buf, int width, int height, int stride, int dpi)
case 0x2549: draw_box_drawings_right_light_and_left_vertical_heavy(buf, width, height, stride, dpi); break;
case 0x254a: draw_box_drawings_left_light_and_right_vertical_heavy(buf, width, height, stride, dpi); break;
case 0x254b: draw_box_drawings_heavy_vertical_and_horizontal(buf, width, height, stride, dpi); break;
case 0x254c: draw_box_drawings_light_double_dash_horizontal(buf, width, height, stride, dpi); break;
case 0x254d: draw_box_drawings_heavy_double_dash_horizontal(buf, width, height, stride, dpi); break;
case 0x254c:
case 0x254d:
case 0x254e:
case 0x254f:
LOG_WARN("unimplemented: box drawing: wc=%04lx", (long)wc);