visualizer-ticks: adjust tick positioning and add 5sec span

Just some improvements to out positioning so things line up
as expected.
This commit is contained in:
Christian Hergert
2016-09-27 16:38:17 -07:00
parent aa21c2379f
commit 984fac73b6

View File

@ -34,6 +34,7 @@ struct _SpVisualizerTicks
enum {
TICK_MINUTES,
TICK_HALF_MINUTES,
TICK_FIVE_SECONDS,
TICK_SECONDS,
TICK_HALF_SECONDS,
TICK_QUARTER_SECONDS,
@ -49,13 +50,14 @@ struct {
gint64 span;
} tick_sizing[N_TICKS] = {
{ 3, 12, NSEC_PER_SEC * 60 },
{ 2, 11, NSEC_PER_SEC * 30 },
{ 1, 10, NSEC_PER_SEC },
{ 1, 9, NSEC_PER_SEC / 2 },
{ 1, 7, NSEC_PER_SEC / 4 },
{ 1, 6, NSEC_PER_SEC / 10 },
{ 1, 5, NSEC_PER_SEC / 100 },
{ 1, 4, NSEC_PER_SEC / 1000 },
{ 1, 11, NSEC_PER_SEC * 30 },
{ 1, 10, NSEC_PER_SEC * 5 },
{ 1, 9, NSEC_PER_SEC },
{ 1, 8, NSEC_PER_SEC / 2 },
{ 1, 6, NSEC_PER_SEC / 4 },
{ 1, 5, NSEC_PER_SEC / 10 },
{ 1, 4, NSEC_PER_SEC / 100 },
{ 1, 3, NSEC_PER_SEC / 1000 },
};
G_DEFINE_TYPE (SpVisualizerTicks, sp_visualizer_ticks, GTK_TYPE_DRAWING_AREA)
@ -67,9 +69,8 @@ draw_ticks (SpVisualizerTicks *self,
gint ticks)
{
gdouble half;
gdouble space;
gint64 timespan;
gint64 n_ticks;
gint space;
g_assert (SP_IS_VISUALIZER_TICKS (self));
g_assert (cr != NULL);
@ -78,14 +79,15 @@ draw_ticks (SpVisualizerTicks *self,
g_assert (ticks < N_TICKS);
timespan = self->end_time - self->begin_time;
n_ticks = timespan / tick_sizing[ticks].span;
space = area->width / n_ticks;
space = (gdouble)area->width / (gdouble)timespan * (gdouble)tick_sizing[ticks].span;
half = tick_sizing[ticks].width / 2.0;
for (gint x = 0; x < area->width; x += space)
g_assert (space >= MIN_TICK_DISTANCE);
for (gdouble x = 0; x < area->width; x += space)
{
cairo_move_to (cr, x - half, 0);
cairo_line_to (cr, x - half, tick_sizing[ticks].height);
cairo_move_to (cr, (gint)x - half, 0);
cairo_line_to (cr, (gint)x - half, tick_sizing[ticks].height);
}
cairo_set_line_width (cr, tick_sizing[ticks].width);