From: Scott Worley <scottworley@scottworley.com>
Date: Thu, 23 Feb 2023 06:28:57 +0000 (-0800)
Subject: Charts have points
X-Git-Url: http://git.scottworley.com/batteryviewer/commitdiff_plain/27db65e22dd1c085204ebb893edd4d9da8c3b267?hp=5a9453723d439ed0e58681d7c0955c9f2e348b4d

Charts have points
---

diff --git a/chart.c b/chart.c
index 3efd454..8b05d33 100644
--- a/chart.c
+++ b/chart.c
@@ -12,7 +12,11 @@
 typedef struct _BVChartPrivate BVChartPrivate;
 
 struct _BVChartPrivate {
-  int temp;
+  GArray *points;
+};
+
+struct BVChartPoint {
+  float x, y;
 };
 
 G_DEFINE_TYPE_WITH_CODE(BVChart, bv_chart, GTK_TYPE_DRAWING_AREA,
@@ -22,8 +26,19 @@ static void bv_chart_class_init(BVChartClass *klass __attribute__((unused))) {}
 
 static void bv_chart_init(BVChart *chart) {
   gtk_widget_set_has_window(GTK_WIDGET(chart), FALSE);
+  BVChartPrivate *priv = bv_chart_get_instance_private(chart);
+  gboolean zero_terminated = FALSE;
+  gboolean clear_ = FALSE;
+  priv->points =
+      g_array_new(zero_terminated, clear_, sizeof(struct BVChartPoint));
 }
 
 GtkWidget *bv_chart_new() {
   return GTK_WIDGET(g_object_new(bv_chart_get_type(), NULL));
 }
+
+void bv_chart_add_point(BVChart *chart, float x, float y) {
+  BVChartPrivate *priv = bv_chart_get_instance_private(chart);
+  struct BVChartPoint p = {.x = x, .y = y};
+  g_array_append_val(priv->points, p);
+}
diff --git a/chart.h b/chart.h
index 7cda505..2b83d32 100644
--- a/chart.h
+++ b/chart.h
@@ -33,6 +33,7 @@ struct _BVChartClass {
 
 GType bv_chart_get_type(void) G_GNUC_CONST;
 GtkWidget *bv_chart_new(void);
+void bv_chart_add_point(BVChart *chart, float x, float y);
 
 G_END_DECLS