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ubb-la/gui.c: show horizontal divisions

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This commit is contained in:
Werner Almesberger 2013-01-31 01:09:42 -03:00
parent 5bb086e0e8
commit acd9fd6673
1 changed files with 19 additions and 0 deletions
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19
ubb-la/gui.c
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@ -41,6 +41,7 @@
#define LEVEL_RGBA 0xffff00ff /* constant level or single change */
#define BOUNCE_RGBA 0xff8080ff /* bouncing signal */
#define LABEL_RGBA 0xffffffff /* channel label */
#define DIV_RGBA 0x808080ff /* divisions */
#define XCENTER ((XRES+CH_XOFF)/2)
@ -54,6 +55,9 @@
#define CH_SKIP 16
#define CH_HEIGHT 8
#define DIV_X 32
#define DIV_Y 6
#define MAX_ZOOM 3
#define FREQ_X 0
@ -342,6 +346,20 @@ static void show_freq(double freq)
}
/* ----- Show a divisions -------------------------------------------------- */
static void show_divisions(void)
{
int n = (XRES-CH_XOFF)/2/DIV_X;
int i;
for (i = -n; i <= n; i++)
vlineColor(surf, XCENTER+i*DIV_X,
ch_y(0, 1)-DIV_Y, ch_y(3, 0)+DIV_Y, DIV_RGBA);
}
/* ----- Main event loop --------------------------------------------------- */
@ -366,6 +384,7 @@ void gui(const uint8_t *buf, int skip, int nibbles, double freq)
clear();
for (i = 0; i != 4; i++)
textf(0, ch_y(i, 1), LABEL_RGBA, "CH%d", i);
show_divisions();
show_buffer(buf, skip, nibbles, CH_XOFF, XRES, zoom, pos);
show_freq(freq);
update();