Add auto-hide to fullscreen mode

All the widget (including toolbar) are hidden by default, moving the
mouse to the edge of the screen temporarily shows the widgets for that
side.

diff --git a/src/aweather-gui.c b/src/aweather-gui.c
index 1b50efed5d87e016f595f3de652ab80ad9d0d0ab..499be3d3b0f491df1906040a77698514d32624de 100644 (file)
--- a/src/aweather-gui.c
+++ b/src/aweather-gui.c
@@ -26,6 +26,50 @@
 #include "aweather-gui.h"
 #include "aweather-location.h"
 
+/* Autohide */
+typedef struct {
+       GtkWidget      *widget;
+       GtkWidget      *window;
+       GtkPositionType position;
+       gulong          handler;
+} GtkAutohideData;
+static gboolean _gtk_widget_autohide_cb(GtkWidget *win,
+               GdkEventMotion *event, GtkAutohideData *data)
+{
+       GtkAllocation alloc;
+       gtk_widget_get_allocation(data->window, &alloc);
+       if (data->position == GTK_POS_BOTTOM)
+               g_debug("GtkWidget: autohide_cb - y=%lf, h=%d", event->y, alloc.height);
+       gint position = -1;
+       if (event->x < 20)                position = GTK_POS_LEFT;
+       if (event->y < 20)                position = GTK_POS_TOP;
+       if (event->x > alloc.width  - 20) position = GTK_POS_RIGHT;
+       if (event->y > alloc.height - 20) position = GTK_POS_BOTTOM;
+       if (position == data->position)
+               gtk_widget_show(data->widget);
+       else
+               gtk_widget_hide(data->widget);
+       return FALSE;
+}
+static void _gtk_widget_autohide(GtkWidget *widget, GtkWidget *viewer,
+               GtkPositionType position)
+{
+       GtkAutohideData *data = g_new0(GtkAutohideData, 1);
+       data->widget   = widget;
+       data->position = position;
+       data->window   = viewer;
+       data->handler  = g_signal_connect(data->window, "motion-notify-event",
+                       G_CALLBACK(_gtk_widget_autohide_cb), data);
+       g_object_set_data(G_OBJECT(widget), "autohidedata", data);
+       gtk_widget_hide(widget);
+}
+static void _gtk_widget_autoshow(GtkWidget *widget)
+{
+       GtkAutohideData *data = g_object_get_data(G_OBJECT(widget), "autohidedata");
+       g_signal_handler_disconnect(data->window, data->handler);
+       g_free(data);
+       gtk_widget_show(widget);
+}
 
 /*************
  * Callbacks *
@@ -116,15 +160,22 @@ G_MODULE_EXPORT void on_zoomout(GtkAction *action, AWeatherGui *self)
 
 G_MODULE_EXPORT void on_fullscreen(GtkToggleAction *action, AWeatherGui *self)
 {
-       gchar *hide[] = {"main_menu", "main_sidebar", "main_tabs"};
+       GtkWidget *menu    = aweather_gui_get_widget(self, "main_menu");
+       GtkWidget *toolbar = aweather_gui_get_widget(self, "main_toolbar");
+       GtkWidget *sidebar = aweather_gui_get_widget(self, "main_sidebar");
+       GtkWidget *tabs    = aweather_gui_get_widget(self, "main_tabs");
        if (gtk_toggle_action_get_active(action)) {
                gtk_window_fullscreen(GTK_WINDOW(self));
-               for (int i = 0; i < G_N_ELEMENTS(hide); i++)
-                       gtk_widget_hide(aweather_gui_get_widget(self, hide[i]));
+               gtk_widget_hide(menu);
+               _gtk_widget_autohide(toolbar, GTK_WIDGET(self->viewer), GTK_POS_TOP);
+               _gtk_widget_autohide(sidebar, GTK_WIDGET(self->viewer), GTK_POS_RIGHT);
+               _gtk_widget_autohide(tabs,    GTK_WIDGET(self->viewer), GTK_POS_BOTTOM);
        } else {
                gtk_window_unfullscreen(GTK_WINDOW(self));
-               for (int i = 0; i < G_N_ELEMENTS(hide); i++)
-                       gtk_widget_show(aweather_gui_get_widget(self, hide[i]));
+               gtk_widget_show(menu);
+               _gtk_widget_autoshow(toolbar);
+               _gtk_widget_autoshow(sidebar);
+               _gtk_widget_autoshow(tabs);
        }
 }