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Support for different color config precisions (#RGB format)

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Support for #RGB is claimed in docs.
This commit is contained in:
Nikita Zlobin 2020-05-21 17:31:24 +05:00
parent 2e2b3e549f
commit 7226ef2c15
1 changed files with 16 additions and 8 deletions
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24
src/draw.c
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@ -34,6 +34,8 @@ struct window_x11 *win;
PangoFontDescription *pango_fdesc; PangoFontDescription *pango_fdesc;
#define UINT_MAX_N(bits) (1 << (bits-1) | (( 1 << (bits-1) ) - 1))
void draw_setup(void) void draw_setup(void)
{ {
x_setup(); x_setup();
@ -42,13 +44,16 @@ void draw_setup(void)
pango_fdesc = pango_font_description_from_string(settings.font); pango_fdesc = pango_font_description_from_string(settings.font);
} }
static struct color hex_to_color(uint32_t hexValue) static struct color hex_to_color(uint32_t hexValue, int dpc)
{ {
const int bpc = 4 * dpc;
const unsigned single_max = UINT_MAX_N(bpc);
struct color ret; struct color ret;
ret.r = ((hexValue >> 24) & 0xFF) / (double)0xFF; ret.r = ((hexValue >> 3 * bpc) & single_max) / (double)single_max;
ret.g = ((hexValue >> 16) & 0xFF) / (double)0xFF; ret.g = ((hexValue >> 2 * bpc) & single_max) / (double)single_max;
ret.b = ((hexValue >> 8) & 0xFF) / (double)0xFF; ret.b = ((hexValue >> 1 * bpc) & single_max) / (double)single_max;
ret.a = ((hexValue) & 0xFF) / (double)0xFF; ret.a = ((hexValue) & single_max) / (double)single_max;
return ret; return ret;
} }
@ -62,12 +67,15 @@ static struct color string_to_color(const char *str)
} }
switch (strlen(str+1)) { switch (strlen(str+1)) {
case 6: return hex_to_color((val << 8) | 0xFF); case 3: return hex_to_color((val << 4) | 0xF, 1);
case 8: return hex_to_color(val); case 6: return hex_to_color((val << 8) | 0xFF, 2);
case 4: return hex_to_color(val, 1);
case 8: return hex_to_color(val, 2);
} }
/* return black on error */
LOG_W("Invalid color string: '%s'", str); LOG_W("Invalid color string: '%s'", str);
return hex_to_color(0xFF); return hex_to_color(0xF, 1);
} }
static inline double color_apply_delta(double base, double delta) static inline double color_apply_delta(double base, double delta)