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added "Zoom" button and improved scaling

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It should be possible to have a certain limit where we
stop zooming so that short dives are visible as such
at first glance. Therefore a "Zoom" button has been
added to the "Log" menu along with a shortcut (Ctrl + "0").
The user can now zoom/unzoom the plot and is still able to
quickly distinguish short dives from normal ones when
browsing the log.

Signed-off-by: Maximilian Güntner <maximilian.guentner@gmail.com>
This commit is contained in:
Maximilian Güntner 2012-06-11 02:45:36 +02:00
parent 0a7fa8ea50
commit 7acd075bd5
2 changed files with 41 additions and 25 deletions
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54
profile.c
View file

@ -14,6 +14,7 @@
#include "color.h"
int selected_dive = 0;
char zoomed_plot = 0;
typedef enum { STABLE, SLOW, MODERATE, FAST, CRAZY } velocity_t;
@ -180,18 +181,24 @@ static void dump_pi (struct plot_info *pi)
* When showing dive profiles, we scale things to the
* current dive. However, we don't scale past less than
* 30 minutes or 90 ft, just so that small dives show
* up as such.
* If the dive time is shorter than 10 minutes we assume that
* this has been an apnea dive and display it accordingly.
* we also need to add 180 seconds at the end so the min/max
* up as such unless zoom is enabled.
* We also need to add 180 seconds at the end so the min/max
* plots correctly
*/
static int get_maxtime(struct plot_info *pi)
{
int seconds = pi->maxtime;
if (seconds < 600) {
/* Possible apnea dive, we scale accordingly */
return ROUND_UP(seconds+seconds/4, 60);
if (zoomed_plot) {
/* Rounded up to one minute, with at least 2.5 minutes to
* spare.
* For dive times shorter than 10 minutes, we use seconds/4 to
* calculate the space dynamically.
* This is seamless since 600/4 = 150.
*/
if ( seconds < 600 )
return ROUND_UP(seconds+seconds/4, 60);
else
return ROUND_UP(seconds+150, 60);
} else {
/* min 30 minutes, rounded up to 5 minutes, with at least 2.5 minutes to spare */
return MAX(30*60, ROUND_UP(seconds+150, 60*5));
@ -201,8 +208,13 @@ static int get_maxtime(struct plot_info *pi)
static int get_maxdepth(struct plot_info *pi)
{
unsigned mm = pi->maxdepth;
/* Minimum 30m, rounded up to 10m, with at least 3m to spare */
return MAX(30000, ROUND_UP(mm+3000, 10000));
if (zoomed_plot) {
/* Rounded up to 10m, with at least 3m to spare */
return ROUND_UP(mm+3000, 10000);
} else {
/* Minimum 30m, rounded up to 10m, with at least 3m to spare */
return MAX(30000, ROUND_UP(mm+3000, 10000));
}
}
typedef struct {
@ -450,27 +462,21 @@ static void plot_depth_profile(struct graphics_context *gc, struct plot_info *pi
int sec, depth;
struct plot_data *entry;
int maxtime, maxdepth, marker;
int increments[4] = { 5*60, 10*60, 15*60, 30*60 };
int increments[8] = { 10, 20, 30, 60, 5*60, 10*60, 15*60, 30*60 };
/* Get plot scaling limits */
maxtime = get_maxtime(pi);
maxdepth = get_maxdepth(pi);
/* We check whether this has been an apnea dive and overwrite
* the increments in order to get reasonable time markers */
if (maxtime < 600) {
increments[0] = 10;
increments[1] = 20;
increments[2] = 30;
increments[3] = 60;
}
/* Time markers: at most every 5 min, but no more than 12 markers
* and for convenience we do 5, 10, 15 or 30 min intervals.
/* Time markers: at most every 5 min, but no more than 12 markers.
* We start out with 10 seconds and increment up to 30 minutes,
* depending on the dive time.
* This allows for 6h dives - enough (I hope) for even the craziest
* divers - but just in case, for those 8h depth-record-breaking dives,
* we double the interval if this still doesn't get us to 12 or fewer
* time markers */
i = 0;
while (maxtime / increments[i] > 12 && i < 4)
while (maxtime / increments[i] > 12 && i < 8)
i++;
incr = increments[i];
while (maxtime / incr > 12)
@ -490,13 +496,13 @@ static void plot_depth_profile(struct graphics_context *gc, struct plot_info *pi
/* now the text on the time markers */
text_render_options_t tro = {10, TIME_TEXT, CENTER, TOP};
if (maxtime < 600) {
/* Be a bit more verbose with shorter (apnea) dives */
/* Be a bit more verbose with shorter dives */
for (i = incr; i < maxtime; i += incr)
plot_text(gc, &tro, i, 1, "%d:%d", i/60, i%60);
plot_text(gc, &tro, i, 1, "%d:%d", i/60, i%60);
} else {
/* Only render the time on every second marker for normal dives */
for (i = incr; i < maxtime; i += 2 * incr)
plot_text(gc, &tro, i, 1, "%d", i/60);
plot_text(gc, &tro, i, 1, "%d", i/60);
}
/* Depth markers: every 30 ft or 10 m*/
gc->leftx = 0; gc->rightx = 1.0;