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box-drawing: break out thickness calculation

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Daniel Eklöf 2020-12-26 20:57:17 +01:00
parent fc95c7f48c
commit 032da5b14e
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GPG key ID: 5BBD4992C116573F
1 changed files with 16 additions and 10 deletions
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26
box-drawing.c
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@ -10,6 +10,12 @@
#include "terminal.h"
#include "xmalloc.h"
static int
thickness(int pts, int dpi)
{
return pts * dpi / 72;
}
static void
hline(uint8_t *buf, int x1, int x2, int y, int thick, int stride)
{
@ -37,7 +43,7 @@ vline(uint8_t *buf, int y1, int y2, int x, int thick, int stride)
static void
draw_box_drawings_light_horizontal(uint8_t *buf, int width, int height, int stride, int dpi)
{
const int thick = 1 * dpi / 72;
const int thick = thickness(1, dpi);
hline(buf, 0, width, (height - thick) / 2, thick, stride);
}
@ -50,14 +56,14 @@ draw_box_drawings_heavy_horizontal(uint8_t *buf, int width, int height, int stri
static void
draw_box_drawings_light_vertical(uint8_t *buf, int width, int height, int stride, int dpi)
{
int thick = 1 * dpi / 72;
const int thick = thickness(1, dpi);
vline(buf, 0, height, (width - thick) / 2, thick, stride);
}
static void
draw_box_drawings_light_down_and_right(uint8_t *buf, int width, int height, int stride, int dpi)
{
int thick = 1 * dpi / 72;
const int thick = thickness(1, dpi);
int hmid = (height - thick) / 2;
int vmid = (width - thick) / 2;
hline(buf, vmid, width, hmid, thick, stride);
@ -67,7 +73,7 @@ draw_box_drawings_light_down_and_right(uint8_t *buf, int width, int height, int
static void
draw_box_drawings_light_down_and_left(uint8_t *buf, int width, int height, int stride, int dpi)
{
int thick = 1 * dpi / 72;
const int thick = thickness(1, dpi);
int hmid = (height - thick) / 2;
int vmid = (width - thick) / 2;
hline(buf, 0, vmid, hmid, thick, stride);
@ -77,7 +83,7 @@ draw_box_drawings_light_down_and_left(uint8_t *buf, int width, int height, int s
static void
draw_box_drawings_light_up_and_right(uint8_t *buf, int width, int height, int stride, int dpi)
{
int thick = 1 * dpi / 72;
const int thick = thickness(1, dpi);
int hmid = (height - thick) / 2;
int vmid = (width - thick) / 2;
hline(buf, vmid, width, hmid, thick, stride);
@ -87,7 +93,7 @@ draw_box_drawings_light_up_and_right(uint8_t *buf, int width, int height, int st
static void
draw_box_drawings_light_up_and_left(uint8_t *buf, int width, int height, int stride, int dpi)
{
int thick = 1 * dpi / 72;
const int thick = thickness(1, dpi);
int hmid = (height - thick) / 2;
int vmid = (width - thick) / 2;
hline(buf, 0, vmid, hmid, thick, stride);
@ -97,7 +103,7 @@ draw_box_drawings_light_up_and_left(uint8_t *buf, int width, int height, int str
static void
draw_box_drawings_light_vertical_and_right(uint8_t *buf, int width, int height, int stride, int dpi)
{
int thick = 1 * dpi / 72;
const int thick = thickness(1, dpi);
int hmid = (height - thick) / 2;
int vmid = (width - thick) / 2;
hline(buf, vmid, width, hmid, thick, stride);
@ -107,7 +113,7 @@ draw_box_drawings_light_vertical_and_right(uint8_t *buf, int width, int height,
static void
draw_box_drawings_light_vertical_and_left(uint8_t *buf, int width, int height, int stride, int dpi)
{
int thick = 1 * dpi / 72;
const int thick = thickness(1, dpi);
int hmid = (height - thick) / 2;
int vmid = (width - thick) / 2;
hline(buf, 0, vmid, hmid, thick, stride);
@ -117,7 +123,7 @@ draw_box_drawings_light_vertical_and_left(uint8_t *buf, int width, int height, i
static void
draw_box_drawings_light_down_and_horizontal(uint8_t *buf, int width, int height, int stride, int dpi)
{
int thick = 1 * dpi / 72;
const int thick = thickness(1, dpi);
int hmid = (height - thick) / 2;
int vmid = (width - thick) / 2;
hline(buf, 0, width, hmid, thick, stride);
@ -127,7 +133,7 @@ draw_box_drawings_light_down_and_horizontal(uint8_t *buf, int width, int height,
static void
draw_box_drawings_light_up_and_horizontal(uint8_t *buf, int width, int height, int stride, int dpi)
{
int thick = 1 * dpi / 72;
const int thick = thickness(1, dpi);
int hmid = (height - thick) / 2;
int vmid = (width - thick) / 2;
hline(buf, 0, width, hmid, thick, stride);