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ubb-la/gui.c: mark the center of the view area
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11
ubb-la/gui.c
11
ubb-la/gui.c
@ -40,6 +40,7 @@
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#define UNIT_RGBA 0xb0e0ffff /* units */
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#define MAP_BUF_RGBA 0x808080ff /* buffer in the map */
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#define MAP_VIEW_RGBA 0xffffffff /* current view in the map */
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#define CENTER_RGBA 0x5080ffff /* center marker */
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#define LEVEL_RGBA 0xffff00ff /* constant level or single change */
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#define BOUNCE_RGBA 0xff8080ff /* bouncing signal */
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#define LABEL_RGBA 0xffffffff /* channel label */
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@ -57,6 +58,10 @@
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#define MAP_VIEW_Y0 0
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#define MAP_VIEW_Y1 10
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#define CENTER_W 8
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#define CENTER_Y0 20
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#define CENTER_Y1 24
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#define CH_XOFF 30
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#define CH_YOFF 30
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#define CH_SKIP 16
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@ -381,7 +386,8 @@ static void show_divisions(void)
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for (i = -n; i <= n; i++)
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vlineColor(surf, XCENTER+i*DIV_X,
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ch_y(0, 1)-DIV_Y, ch_y(3, 0)+DIV_Y, DIV_RGBA);
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ch_y(0, 1)-DIV_Y, ch_y(3, 0)+DIV_Y,
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i ? DIV_RGBA : CENTER_RGBA);
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}
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@ -410,6 +416,9 @@ void gui(const uint8_t *buf, int skip, int nibbles, double freq)
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for (i = 0; i != 4; i++)
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textf(0, ch_y(i, 1), LABEL_RGBA, "CH%d", i);
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show_divisions();
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filledTrigonColor(surf, XCENTER, CENTER_Y1,
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XCENTER-CENTER_W/2, CENTER_Y0,
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XCENTER+CENTER_W/2, CENTER_Y0, CENTER_RGBA);
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show_buffer(buf, skip, nibbles, CH_XOFF, XRES, zoom, pos);
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show_freq(freq, zoom);
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update();
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