ocarina: Added keyboard shortcuts

Now I don't need to click in the GUI to do things.  I never realized how
much I missed these until now.

include/ocarina/header.h

@@ -6,4 +6,6 @@
 GtkWidget *get_header();
 void put_header();
 
+bool entry_focused();
+
 #endif /* OCARINA_HEADER_H */

include/ocarina/shortcut.h

@@ -0,0 +1,12 @@
+#ifndef OCARINA_SHORTCUT_H
+#define OCARINA_SHORTCUT_H
+
+#include <ocarina/gtk.h>
+
+#include <string>
+using namespace std;
+
+void register_shortcut(string, void (*)());
+gboolean handle_shortcut(GtkWidget *, GdkEvent *, gpointer);
+
+#endif /* OCARINA_SHORTCUT_H */

include/ocarina/window.h

@@ -3,10 +3,14 @@
 
 #include <ocarina/gtk.h>
 
+#include <string>
+using namespace std;
+
 void window_resize(int, int);
 void window_init(string, string);
 void window_add(GtkWidget *);
 void window_title(string);
 void window_icon(string);
+void window_focus();
 
 #endif

ocarina/footer/controls.cpp

@@ -1,6 +1,9 @@
 
 #include <ocarina/gtk.h>
 #include <ocarina/button.h>
+#include <ocarina/shortcut.h>
+#include <libsaria/audio.h>
+#include <libsaria/controls.h>
 #include "footer.h"
 
 static GtkWidget *controls = NULL;
@@ -20,6 +23,29 @@ static GtkWidget *make_buttons()
 	return buttons;
 }
 
+static void toggle_pause_after()
+{
+	libsaria::set_pause_after(!libsaria::get_pause_after());
+}
+
+static void rewind()
+{
+	libsaria::audio::seek(-5);
+}
+
+static void forward()
+{
+	libsaria::audio::seek(5);
+}
+
+static void toggle_play()
+{
+	if (libsaria::audio::is_playing())
+		libsaria::audio::pause();
+	else
+		libsaria::audio::play();
+}
+
 static void make_controls()
 {
 	controls = gtk_vbox_new(FALSE, 0);
@@ -29,6 +55,13 @@ static void make_controls()
 	 * expanding vertically to take up all the space.
 	 */
 	box_pack_start(controls, make_buttons(), TRUE, FALSE, 0);
+
+	register_shortcut("Left", rewind);
+	register_shortcut("Right", forward);
+	register_shortcut("space", toggle_play);
+	register_shortcut("n", libsaria::next);
+	register_shortcut("s", libsaria::audio::stop);
+	register_shortcut("p", toggle_pause_after);
 }
 
 GtkWidget *get_controls()

ocarina/header/entry.cpp

@@ -1,4 +1,6 @@
 
+#include <ocarina/header.h>
+#include <ocarina/shortcut.h>
 #include <libsaria/library.h>
 #include <libsaria/print.h>
 #include "header.h"
@@ -11,10 +13,16 @@ static void do_filter(GtkWidget *entry)
 	libsaria::library::filter(text);
 }
 
+static void filter_focus()
+{
+	gtk_widget_grab_focus(entry);
+}
+
 static void make_entry()
 {
 	entry = gtk_entry_new();
 	GTK_CONNECT(entry, "changed", do_filter, NULL);
+	register_shortcut("slash", filter_focus);
 }
 
 GtkWidget *get_entry()
@@ -23,3 +31,8 @@ GtkWidget *get_entry()
 		make_entry();
 	return entry;
 }
+
+bool entry_focused()
+{
+	return gtk_widget_is_focus(entry);
+}

ocarina/library.cpp

@@ -3,6 +3,7 @@
 #include <ocarina/body.h>
 #include <ocarina/gtk.h>
 #include <ocarina/songlist.h>
+#include <ocarina/shortcut.h>
 
 #include <libsaria/library.h>
 #include <libsaria/queue.h>
@@ -16,7 +17,7 @@ static SongList library_list;
 static struct SongListFuncs library_funcs;
 static list <MenuItem> library_menu;
 
-static void add_to_queue(GtkMenuItem *menu, gpointer data)
+static void add_to_queue()
 {
 	list<ino_t> selected;
 	list<ino_t>::iterator it;
@@ -24,6 +25,11 @@ static void add_to_queue(GtkMenuItem *menu, gpointer data)
 	libsaria::queue::add_ids(selected);
 }
 
+static void add_to_queue_event(GtkMenuItem *menu, gpointer data)
+{
+	add_to_queue();
+}
+
 namespace ocarina
 {
 
@@ -40,10 +46,12 @@ namespace ocarina
 
 	void library::init()
 	{
-		library_menu.push_back(MenuItem("Add to Queue", add_to_queue));
+		library_menu.push_back(MenuItem("Add to Queue", add_to_queue_event));
 		library_funcs.for_each = libsaria::library::for_each;
 		library_funcs.size = libsaria::library::size;
 
+		register_shortcut("q", add_to_queue);
+
 		library_list.init("Library", &library_funcs, &library_menu, true);
 		add_page(library_list.get_label(), library_list.get_window(), true);
 		ocarina::library::refresh();

ocarina/shortcut.cpp

@@ -0,0 +1,46 @@
+
+#include <gdk/gdk.h>
+#include <ocarina/shortcut.h>
+#include <ocarina/window.h>
+#include <ocarina/header.h>
+#include <libsaria/print.h>
+
+#include <map>
+#include <string>
+using namespace std;
+
+static map<string, void (*)()> shortcut_map;
+
+void register_shortcut(string key, void (*func)())
+{
+	shortcut_map[key] = func;
+}
+
+/*
+ * Returns FALSE to allow other functions to run
+ * Returns TRUE if other handlers should not be run
+ */
+gboolean handle_shortcut(GtkWidget *widget, GdkEvent *event, gpointer data)
+{
+	string key = gdk_keyval_name(event->key.keyval);
+	map<string, void (*)()>::iterator it;
+
+	if (key == "Escape") {
+		window_focus();
+		return TRUE;
+	}
+
+	/* Don't run shortcuts if user is filtering */
+	if (entry_focused() == true)
+		return FALSE;
+
+	it = shortcut_map.find(key);
+	if (it == shortcut_map.end()) {
+		print("No function registered for key: ");
+		println(key);
+		return FALSE;
+	}
+
+	it->second();
+	return TRUE;
+}

ocarina/window.cpp

@@ -5,6 +5,7 @@ using namespace std;
 #include <ocarina/gtk.h>
 #include <ocarina/ocarina.h>
 #include <ocarina/window.h>
+#include <ocarina/shortcut.h>
 
 static GtkWidget *window;
 
@@ -32,6 +33,7 @@ void window_init(string title, string icon)
 {
 	window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 	GTK_CONNECT(window, "destroy", destroy_window, NULL);
+	GTK_CONNECT(window, "key-press-event", handle_shortcut, NULL);
 	window_resize(800, 600);
 	gtk_widget_show(window);
 	window_title(title);
@@ -42,3 +44,8 @@ void window_add(GtkWidget *widget)
 {
 	container_add(window, widget);
 }
+
+void window_focus()
+{
+	gtk_window_set_focus(GTK_WINDOW(window), NULL);
+}