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#include <gdk/gdkkeysyms.h>
#include <gtk/gtk.h>
#include <cairo.h>
#include <time.h>
#include <stdlib.h>
#include <glib/gprintf.h>
#define SECOND_INTERVAL 1000
#define DEFAULT_WIDTH 200
#define DEFAULT_HEIGHT 15
struct private {
time_t time;
time_t von_arrives;
struct tm *tm;
};
static gboolean time_handler (GtkWidget* w)
{
gtk_widget_queue_draw (w);
return TRUE;
}
gboolean on_key_press (GtkWidget *widget, GdkEventKey *key, gpointer p) {
if (key->type == GDK_KEY_PRESS)
{
switch (key->keyval)
{
case GDK_Escape :
gtk_main_quit ();
break;
}
}
return FALSE;
}
static void paint (GtkWidget *widget, GdkEventExpose *eev, struct private *p) {
gint width, height;
cairo_t *cr;
gchar *gc_time;
gint sec, min, hour, day;
p->time = p->von_arrives - time(NULL);
p->tm = localtime (&p->time);
day = p->time / (3600*24);
p->time -= day*(3600*24);
hour = p->time / 3600;
p->time -= hour*3600;
min = p->time/60;
p->time -= min*60;
sec = p->time;
gc_time = g_strdup_printf("Von arrives in %02dd %02dh %02dm %02ds", day, hour, min, sec);
width = widget->allocation.width;
height = widget->allocation.height;
cr = gdk_cairo_create (widget->window);
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgba (cr, 1.0f, 1.0f, 1.0f, 0.4f);
cairo_paint (cr);
cairo_select_font_face (cr, "Sans", CAIRO_FONT_SLANT_NORMAL,
CAIRO_FONT_WEIGHT_BOLD);
cairo_save (cr);
cairo_set_font_size (cr, 10);
cairo_move_to (cr, 10, 10);
cairo_set_source_rgba (cr, 0.0f, 0.0f, 0.0f, 1.0f);
cairo_show_text (cr, gc_time);
cairo_restore (cr);
cairo_destroy (cr);
}
static void install_colormap (GtkWidget *w) {
GdkScreen* screen = gtk_widget_get_screen (w);
GdkColormap* colormap = gdk_screen_get_rgba_colormap (screen);
if (!colormap)
colormap = gdk_screen_get_rgb_colormap (screen);
gtk_widget_set_colormap (w, colormap);
}
gint main (gint argc, gchar **argv) {
GtkWidget *window;
struct private *p = malloc(sizeof(struct private));
struct tm von_time = {
.tm_min = 40,
.tm_hour = 9,
.tm_mday = 14,
.tm_mon = 1,
.tm_year = 107,
};
p->von_arrives = mktime(&von_time);
gtk_init(&argc, &argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_stick (GTK_WINDOW (window));
gtk_window_set_keep_below (GTK_WINDOW (window), TRUE);
gtk_window_set_skip_taskbar_hint (GTK_WINDOW (window), TRUE);
gtk_window_set_skip_pager_hint (GTK_WINDOW (window), TRUE);
gtk_window_set_accept_focus (GTK_WINDOW (window), FALSE);
gtk_window_set_decorated (GTK_WINDOW (window), FALSE);
gtk_window_set_resizable (GTK_WINDOW (window), TRUE);
gtk_widget_set_app_paintable (window, TRUE);
gtk_window_set_default_size (GTK_WINDOW (window),
DEFAULT_WIDTH,
DEFAULT_HEIGHT);
install_colormap(window);
gtk_widget_add_events (window, GDK_BUTTON_PRESS_MASK);
g_signal_connect (G_OBJECT (window), "expose-event",
G_CALLBACK (paint),
p);
g_signal_connect (G_OBJECT (window),
"key-press-event",
G_CALLBACK (on_key_press),
NULL);
gtk_widget_show_all (window);
gtk_timeout_add (SECOND_INTERVAL, (GtkFunction) time_handler, window);
gtk_main ();
return 0;
}
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