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Use 'cairo_translate()' instead of manual translation

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I'd like to do 'cairo_scale()' too, but that messes up line sizes.  I'll
think about it.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds 2011-09-06 15:41:02 -07:00
parent dbfce3035e
commit 0e3bbd4102
1 changed files with 20 additions and 19 deletions
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39
profile.c
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@ -28,8 +28,8 @@ static int round_feet_up(int feet)
}
typedef struct {
double r,g,b;
enum {CENTER,LEFT} allign;
double r,g,b;
enum {CENTER,LEFT} allign;
} text_render_options_t;
static void plot_text(cairo_t *cr, text_render_options_t *tro,
@ -46,7 +46,7 @@ static void plot_text(cairo_t *cr, text_render_options_t *tro,
cairo_text_extents(cr, buffer, &extents);
if (tro->allign == CENTER)
x -= extents.width/2 + extents.x_bearing;
x -= extents.width/2 + extents.x_bearing;
y += extents.height * 1.2;
cairo_move_to(cr, x, y);
@ -113,10 +113,10 @@ static int next_minmax(struct dive *dive, int index, int minmax)
}
/* Scale to 0,0 -> maxx,maxy */
#define SCALE(x,y) (x)*maxx/scalex+topx,(y)*maxy/scaley+topy
#define SCALE(x,y) (x)*maxx/scalex,(y)*maxy/scaley
static void plot_depth_text(struct dive *dive, cairo_t *cr,
double topx, double topy, double maxx, double maxy)
double maxx, double maxy)
{
double scalex, scaley;
int maxtime, maxdepth;
@ -146,7 +146,7 @@ static void plot_depth_text(struct dive *dive, cairo_t *cr,
}
static void plot_depth_profile(struct dive *dive, cairo_t *cr,
double topx, double topy, double maxx, double maxy)
double maxx, double maxy)
{
double scalex, scaley;
int begins, sec, depth;
@ -223,7 +223,7 @@ static int get_cylinder_pressure_range(struct dive *dive, double *scalex, double
max = 0;
min = 5000;
if (startp)
*startp = *endp = 0.0;
*startp = *endp = 0.0;
for (i = 0; i < dive->samples; i++) {
struct sample *sample = dive->sample + i;
@ -235,14 +235,14 @@ static int get_cylinder_pressure_range(struct dive *dive, double *scalex, double
continue;
bar = sample->cylinderpressure.mbar;
if (bar != 0.0 && startp && *startp == 0.0)
*startp = bar;
*startp = bar;
if (bar < min)
min = bar;
if (bar > max)
max = bar;
}
if (endp)
*endp = bar;
*endp = bar;
if (!max)
return 0;
*scaley = max * 1.5;
@ -250,7 +250,7 @@ static int get_cylinder_pressure_range(struct dive *dive, double *scalex, double
}
static void plot_cylinder_pressure(struct dive *dive, cairo_t *cr,
double topx, double topy, double maxx, double maxy)
double maxx, double maxy)
{
int i, sec = -1;
double scalex, scaley;
@ -305,7 +305,7 @@ static double calculate_airuse(struct dive *dive)
}
static void plot_info(struct dive *dive, cairo_t *cr,
double topx, double topy, double maxx, double maxy)
double maxx, double maxy)
{
text_render_options_t tro = {0.2, 1.0, 0.2, LEFT};
const double liters_per_cuft = 28.317;
@ -317,16 +317,16 @@ static void plot_info(struct dive *dive, cairo_t *cr,
/* I really need to start addign some unit setting thing */
airuse /= liters_per_cuft;
plot_text(cr, &tro, maxx*0.95, maxy*0.9, "cuft: %4.2f", airuse);
plot_text(cr, &tro, maxx*0.8, maxy*0.8, "cuft: %4.2f", airuse);
if (dive->duration.seconds) {
double pressure = 1 + (dive->meandepth.mm / 10000.0);
double sac = airuse / pressure * 60 / dive->duration.seconds;
plot_text(cr, &tro, maxx*0.95, maxy*0.95, "SAC: %4.2f", sac);
plot_text(cr, &tro, maxx*0.8, maxy*0.85, "SAC: %4.2f", sac);
}
}
static void plot_cylinder_pressure_text(struct dive *dive, cairo_t *cr,
double topx, double topy, double maxx, double maxy)
double maxx, double maxy)
{
double scalex, scaley;
double startp,endp;
@ -351,19 +351,20 @@ static void plot(cairo_t *cr, int w, int h, struct dive *dive)
topy = h / 20.0;
maxx = (w - 2*topx);
maxy = (h - 2*topy);
cairo_translate(cr, topx, topy);
/* Cylinder pressure plot */
plot_cylinder_pressure(dive, cr, topx, topy, maxx, maxy);
plot_cylinder_pressure(dive, cr, maxx, maxy);
/* Depth profile */
plot_depth_profile(dive, cr, topx, topy, maxx, maxy);
plot_depth_profile(dive, cr, maxx, maxy);
/* Text on top of all graphs.. */
plot_depth_text(dive, cr, topx, topy, maxx, maxy);
plot_cylinder_pressure_text(dive, cr, topx, topy, maxx, maxy);
plot_depth_text(dive, cr, maxx, maxy);
plot_cylinder_pressure_text(dive, cr, maxx, maxy);
/* And info box in the lower right corner.. */
plot_info(dive, cr, topx, topy, maxx, maxy);
plot_info(dive, cr, maxx, maxy);
/* Bounding box last */
scalex = scaley = 1.0;