From: Scott Worley 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