Add yacos_scanner object

glade/cartItem.glade

@@ -163,6 +163,10 @@
             <property name="visible">True</property>
             <property name="can_focus">True</property>
             <property name="receives_default">True</property>
+            <property name="margin_left">4</property>
+            <property name="margin_right">4</property>
+            <property name="margin_top">4</property>
+            <property name="margin_bottom">4</property>
             <property name="use_stock">True</property>
             <property name="always_show_image">True</property>
           </object>
@@ -179,6 +183,10 @@
             <property name="visible">True</property>
             <property name="can_focus">True</property>
             <property name="receives_default">True</property>
+            <property name="margin_left">4</property>
+            <property name="margin_right">4</property>
+            <property name="margin_top">4</property>
+            <property name="margin_bottom">4</property>
             <property name="use_stock">True</property>
             <property name="always_show_image">True</property>
           </object>

src/main.c

@@ -1,27 +1,46 @@
 #include <gtk/gtk.h>
 #include "main_window.h"
+#include "scanner.h"
+
+// TODO: For testing only
 #include "cart_item.h"
 
 struct app_state {
 	struct mainWindow *mainWindow;
 };
 
+static void newtag(YacosScanner *scanner, struct mainWindow *mainWindow)
+{
+	// TODO: For testing only
+	gtk_stack_set_visible_child(mainWindow->stack_main, mainWindow->page_cart.box);
+	GtkWidget *le = yacos_cart_item_new();
+	gtk_list_box_insert(mainWindow->page_cart.list, le, -1);
+	gtk_widget_show(le);
+}
+
 static void activate(GtkApplication* app, gpointer user_data)
 {
 	struct app_state *app_state = user_data;
 	struct mainWindow **mainWindow = &(app_state->mainWindow);
 
+	YacosScanner *scanner;
+
 	*mainWindow = mainWindow_new(app);
-	if (*mainWindow) {
+	if (!(*mainWindow)) {
+		g_error("Error initializing mainWindow.");
+		return;
+	}
+
 	gtk_application_add_window(GTK_APPLICATION(app), GTK_WINDOW((*mainWindow)->main_window));
 	gtk_widget_show_all((*mainWindow)->main_window);
 
-		// For testing only
-		gtk_stack_set_visible_child((*mainWindow)->stack_main, (*mainWindow)->page_cart.box);
-		GtkWidget *le = yacos_cart_item_new();
-		gtk_list_box_insert((*mainWindow)->page_cart.list, le, -1);
-		gtk_widget_show(le);
+	scanner = yacos_scanner_new();
+	if (!scanner) {
+		g_error("Error initializing scanner.");
 	}
+
+	g_signal_connect(scanner, "newtag",
+			 (GCallback) newtag, (*mainWindow));
 }
 
 

src/scanner.c

@@ -0,0 +1,60 @@
+#include "scanner.h"
+
+struct _YacosScanner {
+	GObject parent_instance;
+
+	// TODO: Private data goes here
+};
+
+G_DEFINE_TYPE(YacosScanner, yacos_scanner, G_TYPE_OBJECT)
+
+enum {
+	SIGNAL_NEWTAG = 0,
+	SIGNAL_COUNT
+};
+guint yacos_scanner_signals[SIGNAL_COUNT];
+
+static gboolean *yacos_scanner_read (gpointer user_data)
+{
+	YacosScanner *self = YACOS_SCANNER(user_data);
+
+	// TODO: Scan for tags
+	g_signal_emit(self, yacos_scanner_signals[SIGNAL_NEWTAG], 0);
+
+	return G_SOURCE_CONTINUE;
+}
+
+static void yacos_scanner_finalize(GObject *gobject)
+{
+	YacosScanner *obj = yacos_scanner_get_instance_private(YACOS_SCANNER(gobject));
+
+	// TODO: clean up
+
+	G_OBJECT_CLASS(yacos_scanner_parent_class)->finalize(gobject);
+}
+
+static void yacos_scanner_class_init(YacosScannerClass *klass)
+{
+	GObjectClass *object_class = G_OBJECT_CLASS(klass);
+
+	yacos_scanner_signals[SIGNAL_NEWTAG] =
+			g_signal_newv("newtag",
+				      G_TYPE_FROM_CLASS(object_class),
+				      G_SIGNAL_RUN_LAST | G_SIGNAL_NO_RECURSE | G_SIGNAL_NO_HOOKS,
+				      NULL, NULL, NULL, NULL,
+				      G_TYPE_NONE,
+				      0,
+				      NULL);
+
+	object_class->finalize = yacos_scanner_finalize;
+}
+
+static void yacos_scanner_init(YacosScanner *self)
+{
+	g_timeout_add(1000, G_SOURCE_FUNC(yacos_scanner_read), self);
+}
+
+YacosScanner *yacos_scanner_new(void)
+{
+	return g_object_new(YACOS_TYPE_SCANNER, 0);
+}

src/scanner.h

@@ -0,0 +1,15 @@
+#ifndef SCANNER_H
+#define SCANNER_H
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#define YACOS_TYPE_SCANNER yacos_scanner_get_type()
+G_DECLARE_FINAL_TYPE(YacosScanner, yacos_scanner, YACOS, SCANNER, GObject)
+
+YacosScanner *yacos_scanner_new(void);
+
+G_END_DECLS
+
+#endif // SCANNER_H