WIP: Water level widget

data/gwr-window.ui

@@ -7,18 +7,13 @@
       <object class="GtkHeaderBar" id="header_bar">
         <property name="visible">True</property>
         <property name="show-close-button">True</property>
-        <property name="title">Hello, World!</property>
+        <property name="title">Water Reminder</property>
       </object>
     </child>
     <child>
-      <object class="GtkLabel" id="label">
-        <property name="label">Hello, World!</property>
+      <object class="GwrWaterLevel" id="level">
         <property name="visible">True</property>
-        <attributes>
-          <attribute name="weight" value="bold"/>
-          <attribute name="scale" value="2"/>
-        </attributes>
       </object>
     </child>
   </template>
-</interface>
+</interface>

src/gwr-water-level.c

@@ -0,0 +1,60 @@
+#include "gwr-water-level.h"
+
+struct _GwrWaterLevel {
+  GtkWidget parent_instance;
+};
+
+G_DEFINE_TYPE(GwrWaterLevel, gwr_water_level, GTK_TYPE_WIDGET)
+
+static gboolean
+gwr_water_level_draw(GtkWidget *widget, cairo_t *cr)
+{
+  GtkStyleContext *context = gtk_widget_get_style_context(widget);
+  gint width = gtk_widget_get_allocated_width(widget);
+  gint height = gtk_widget_get_allocated_height(widget);
+  GdkRGBA color;
+
+  gtk_render_background(context, cr, 0, 0, width, height);
+  gtk_render_frame(context, cr, 0, 0, width, height);
+
+  cairo_arc(cr, width / 2.0, height / 2.0, MIN(width, height) / 2.0, 0, 2 * G_PI);
+  gtk_style_context_get_color(context, gtk_style_context_get_state(context), &color);
+  gdk_cairo_set_source_rgba(cr, &color);
+  gdk_cairo_set_source_rgba(cr, &color);
+  cairo_fill (cr);
+
+  return FALSE;
+}
+
+static void
+gwr_water_level_finalize(GObject *gobject)
+{
+  // Here, you free memory that is associated with your instance.
+  //
+  // References to other objects should be freed in dispose instead.
+
+  G_OBJECT_CLASS(gwr_water_level_parent_class)->finalize(gobject);
+}
+
+static void
+gwr_water_level_destroy(GtkWidget *widget)
+{
+  // Here you drop references to other objects.
+
+  GTK_WIDGET_CLASS(gwr_water_level_parent_class)->destroy(widget);
+}
+
+static void
+gwr_water_level_class_init(GwrWaterLevelClass *klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS(klass);
+
+  gobject_class->finalize = gwr_water_level_finalize;
+  widget_class->destroy = gwr_water_level_destroy;
+  widget_class->draw = gwr_water_level_draw;
+}
+
+ static void
+gwr_water_level_init(GwrWaterLevel *self)
+{}

src/gwr-water-level.h

@@ -0,0 +1,13 @@
+#ifndef __GWR_WATER_LEVEL_H__
+# define __GWR_WATER_LEVEL_H__
+
+# include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+# define GWR_TYPE_WATER_LEVEL (gwr_water_level_get_type())
+G_DECLARE_FINAL_TYPE(GwrWaterLevel, gwr_water_level, GWR, WATER_LEVEL, GtkWidget)
+
+G_END_DECLS
+
+#endif  /* __GWR_WATER_LEVEL_H__ */

src/gwr-window.c

@@ -18,6 +18,7 @@
 
 #include "gwr-config.h"
 #include "gwr-window.h"
+#include "gwr-water-level.h"
 
 struct _GwrWindow
 {
@@ -25,7 +26,7 @@ struct _GwrWindow
 
   /* Template widgets */
   GtkHeaderBar        *header_bar;
-  GtkLabel            *label;
+  GwrWaterLevel       *level;
 };
 
 G_DEFINE_TYPE (GwrWindow, gwr_window, GTK_TYPE_APPLICATION_WINDOW)
@@ -37,7 +38,7 @@ gwr_window_class_init (GwrWindowClass *klass)
 
   gtk_widget_class_set_template_from_resource (widget_class, "/eu/polonkai/gergely/GnomeWaterReminder/gwr-window.ui");
   gtk_widget_class_bind_template_child (widget_class, GwrWindow, header_bar);
-  gtk_widget_class_bind_template_child (widget_class, GwrWindow, label);
+  gtk_widget_class_bind_template_child (widget_class, GwrWindow, level);
 }
 
 static void

src/meson.build

@@ -2,6 +2,7 @@ gwr_sources = [
   gwr_resources,
   'main.c',
   'gwr-window.c',
+  'gwr-water-level.c',
 ]
 
 gwr_deps = [