First pass to parse uemis Zurich '.SDA' files

[ext/subsurface.git] / profile.c

diff --git a/profile.c b/profile.c
index 6d6e1ff98ff345eeca162a9ba983a93998287167..66b4c835b52f17df9f7dc954d52455f9ed133b55 100644 (file)
--- a/profile.c
+++ b/profile.c
@@ -10,21 +10,6 @@
 
 int selected_dive = 0;
 
-/*
- * Cairo scaling really is horribly horribly mis-designed.
- *
- * Which is sad, because I really like Cairo otherwise. But
- * the fact that the line width is scaled with the same scale
- * as the coordinate system is a f*&%ing disaster. So we
- * can't use it, and instead have this butt-ugly wrapper thing..
- */
-struct graphics_context {
-       cairo_t *cr;
-       double maxx, maxy;
-       double leftx, rightx;
-       double topy, bottomy;
-};
-
 /* Plot info with smoothing and one-, two- and three-minute minimums and maximums */
 struct plot_info {
        int nr;
@@ -55,6 +40,24 @@ static void line_to(struct graphics_context *gc, double x, double y)
        cairo_line_to(gc->cr, SCALE(gc, x, y));
 }
 
+static void set_source_rgba(struct graphics_context *gc, double r, double g, double b, double a)
+{
+       if (gc->printer) {
+               /* Black is white and white is black */
+               double sum = r+g+b;
+               if (sum > 2)
+                       r = g = b = 0;
+               else if (sum < 1)
+                       r = g = b = 1;
+       }
+       cairo_set_source_rgba(gc->cr, r, g, b, a);
+}
+
+static void set_source_rgb(struct graphics_context *gc, double r, double g, double b)
+{
+       set_source_rgba(gc, r, g, b, 1);
+}
+
 #define ROUND_UP(x,y) ((((x)+(y)-1)/(y))*(y))
 
 /*
@@ -122,13 +125,13 @@ static void plot_text(struct graphics_context *gc, const text_render_options_t *
        cairo_rel_move_to(cr, dx, dy);
 
        cairo_text_path(cr, buffer);
-       cairo_set_source_rgb(cr, 0, 0, 0);
+       set_source_rgb(gc, 0, 0, 0);
        cairo_stroke(cr);
 
        move_to(gc, x, y);
        cairo_rel_move_to(cr, dx, dy);
 
-       cairo_set_source_rgb(cr, tro->r, tro->g, tro->b);
+       set_source_rgb(gc, tro->r, tro->g, tro->b);
        cairo_show_text(cr, buffer);
 }
 
@@ -222,6 +225,8 @@ static void plot_minmax_profile_minute(struct graphics_context *gc, struct plot_
 
 static void plot_minmax_profile(struct graphics_context *gc, struct plot_info *pi)
 {
+       if (gc->printer)
+               return;
        plot_minmax_profile_minute(gc, pi, 2, 0.1);
        plot_minmax_profile_minute(gc, pi, 1, 0.1);
        plot_minmax_profile_minute(gc, pi, 0, 0.1);
@@ -255,7 +260,7 @@ static void plot_depth_profile(struct dive *dive, struct graphics_context *gc, s
        case FEET: marker = 9144; break;        /* 30 ft */
        }
 
-       cairo_set_source_rgba(cr, 1, 1, 1, 0.5);
+       set_source_rgba(gc, 1, 1, 1, 0.5);
        for (i = marker; i < maxdepth; i += marker) {
                move_to(gc, 0, i);
                line_to(gc, 1, i);
@@ -263,7 +268,7 @@ static void plot_depth_profile(struct dive *dive, struct graphics_context *gc, s
        cairo_stroke(cr);
 
        /* Show mean depth */
-       cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.40);
+       set_source_rgba(gc, 1, 0.2, 0.2, 0.40);
        move_to(gc, 0, dive->meandepth.mm);
        line_to(gc, 1, dive->meandepth.mm);
        cairo_stroke(cr);
@@ -274,7 +279,7 @@ static void plot_depth_profile(struct dive *dive, struct graphics_context *gc, s
        plot_minmax_profile(gc, pi);
 
        entry = pi->entry;
-       cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.80);
+       set_source_rgba(gc, 1, 0.2, 0.2, 0.80);
        begins = entry->sec;
        move_to(gc, entry->sec, entry->val);
        for (i = 1; i < pi->nr; i++) {
@@ -289,9 +294,9 @@ static void plot_depth_profile(struct dive *dive, struct graphics_context *gc, s
        line_to(gc, MIN(sec,maxtime), 0);
        line_to(gc, begins, 0);
        cairo_close_path(cr);
-       cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.20);
+       set_source_rgba(gc, 1, 0.2, 0.2, 0.20);
        cairo_fill_preserve(cr);
-       cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.80);
+       set_source_rgba(gc, 1, 0.2, 0.2, 0.80);
        cairo_stroke(cr);
 }
 
@@ -364,7 +369,7 @@ static void plot_temperature_profile(struct dive *dive, struct graphics_context
        if (!setup_temperature_limits(dive, gc))
                return;
 
-       cairo_set_source_rgba(cr, 0.2, 0.2, 1.0, 0.8);
+       set_source_rgba(gc, 0.2, 0.2, 1.0, 0.8);
        for (i = 0; i < dive->samples; i++) {
                struct sample *sample = dive->sample+i;
                int mkelvin = sample->temperature.mkelvin;
@@ -645,7 +650,7 @@ static struct plot_info *depth_plot_info(struct dive *dive)
        return analyze_plot_info(pi);
 }
 
-static void plot(struct graphics_context *gc, int w, int h, struct dive *dive)
+void plot(struct graphics_context *gc, int w, int h, struct dive *dive)
 {
        double topx, topy;
        struct plot_info *pi = depth_plot_info(dive);
@@ -687,7 +692,7 @@ static void plot(struct graphics_context *gc, int w, int h, struct dive *dive)
        plot_info(dive, gc);
 
        /* Bounding box last */
-       cairo_set_source_rgb(gc->cr, 1, 1, 1);
+       set_source_rgb(gc, 1, 1, 1);
        move_to(gc, 0, 0);
        line_to(gc, 0, 1);
        line_to(gc, 1, 1);
@@ -700,14 +705,14 @@ static void plot(struct graphics_context *gc, int w, int h, struct dive *dive)
 static gboolean expose_event(GtkWidget *widget, GdkEventExpose *event, gpointer data)
 {
        struct dive *dive = current_dive;
-       struct graphics_context gc;
+       struct graphics_context gc = { .printer = 0 };
        int w,h;
 
        w = widget->allocation.width;
        h = widget->allocation.height;
 
        gc.cr = gdk_cairo_create(widget->window);
-       cairo_set_source_rgb(gc.cr, 0, 0, 0);
+       set_source_rgb(&gc, 0, 0, 0);
        cairo_paint(gc.cr);
 
        if (dive)