output: Use Cairo and Pango to draw charts, instead of libplot.

[pspp-builds.git] / src / output / chart-provider.h

diff --git a/src/output/chart-provider.h b/src/output/chart-provider.h
index 2ff4aafafddbdd6daf7039f1ec34e100debdcbc0..fa632861545aff1385b3e9ea2b14632d86031850 100644 (file)
--- a/src/output/chart-provider.h
+++ b/src/output/chart-provider.h
@@ -17,6 +17,7 @@
 #ifndef OUTPUT_CHART_PROVIDER_H
 #define OUTPUT_CHART_PROVIDER_H 1
 
+#include <cairo/cairo.h>
 #include <stdbool.h>
 #include <stdint.h>
 #include <output/chart.h>
@@ -28,23 +29,6 @@ struct chart_colour
     uint8_t blue;
   };
 
-struct chart_class
-  {
-    void (*draw) (const struct chart *, plPlotter *);
-    void (*destroy) (struct chart *);
-  };
-
-struct chart
-  {
-    const struct chart_class *class;
-    int ref_cnt;
-  };
-
-void chart_init (struct chart *, const struct chart_class *);
-bool chart_create_file (const char *type, const char *file_name_tmpl,
-                        int number, plPlotterParams *,
-                        char **file_namep, plPlotter **lpp);
-
 /* The geometry of a chart. */
 struct chart_geometry
   {
@@ -62,7 +46,7 @@ struct chart_geometry
     int legend_left ;
     int legend_right ;
 
-    /* Default font size for the plot (if zero, then use plotter default) */
+    /* Default font size for the plot. */
     int font_size;
 
     struct chart_colour fill_colour;
@@ -76,7 +60,26 @@ struct chart_geometry
     double y_max;
   };
 
-void chart_geometry_init (plPlotter *, struct chart_geometry *);
-void chart_geometry_free (plPlotter *);
+struct chart_class
+  {
+    void (*draw) (const struct chart *, cairo_t *, struct chart_geometry *);
+    void (*destroy) (struct chart *);
+  };
+
+struct chart
+  {
+    const struct chart_class *class;
+    int ref_cnt;
+  };
+
+void chart_init (struct chart *, const struct chart_class *);
+
+void chart_geometry_init (cairo_t *, struct chart_geometry *,
+                          double width, double length);
+void chart_geometry_free (cairo_t *);
+
+void chart_draw (const struct chart *, cairo_t *, struct chart_geometry *);
+char *chart_draw_png (const struct chart *, const char *file_name_template,
+                      int number);
 
 #endif /* output/chart-provider.h */