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FireTray/testing/gtk_icon_example.c

187 lines
6.5 KiB
C

#include <stdio.h>
#include <gtk/gtk.h>
#include "firefox.xpm"
#define MIN_FONT_SIZE 4
void tray_icon_on_click(GtkStatusIcon *status_icon,
gpointer user_data)
{
printf("Clicked on tray icon\n");
}
void tray_icon_on_menu(GtkStatusIcon *status_icon, guint button,
guint activate_time, gpointer user_data)
{
printf("Popup menu\n");
}
static GtkStatusIcon *create_tray_icon() {
GtkStatusIcon *tray_icon;
tray_icon = gtk_status_icon_new();
g_signal_connect(G_OBJECT(tray_icon), "activate",
G_CALLBACK(tray_icon_on_click), NULL);
g_signal_connect(G_OBJECT(tray_icon),
"popup-menu",
G_CALLBACK(tray_icon_on_menu), NULL);
/* GdkPixbuf *default_icon = gdk_pixbuf_new_from_xpm_data(firefox_xpm); */
/* gtk_status_icon_set_from_pixbuf(GTK_STATUS_ICON(tray_icon), */
/* GDK_PIXBUF(default_icon)); */
const gchar *default_icon_filename = "firefox32.png";
gtk_status_icon_set_from_file(tray_icon,
default_icon_filename);
gtk_status_icon_set_tooltip(tray_icon,
"Example Tray Icon");
gtk_status_icon_set_visible(tray_icon, TRUE);
return tray_icon;
}
/*
- Hide/Show window to avoid minimizing it to the task bar (yes, use gtk_widget_hide() and gtk_widget_show()) when the user clicks on the system tray icon
- Listen to the "window-state-event" (GObject's signal) to detect when minimizing and, instead of doing that, hide the window (ie, "minimize to the tray").
*/
/* This callback quits the program */
gint delete_event( GtkWidget *widget,
GdkEvent *event,
gpointer
data )
{
gtk_main_quit ();
return FALSE;
}
static void winShowHide(GtkMenuItem *item, gpointer window)
{
/* GdkWindow * tl_window = gdk_window_get_toplevel((GdkWindow*)window); */
/* GdkWindowState ws = gdk_window_get_state((GdkWindow*)tl_window); */
/* printf("GdkWindowState: %d", ws); */
/* gdk_window_hide(window->window); */
/* gtk_widget_show(GTK_WIDGET(window)); */
gtk_widget_hide(GTK_WIDGET(window));
}
SetIconText(GtkStatusIcon *tray_icon, const char *text, const char *color) {
// build background from image
GdkPixbuf* special_icon = gdk_pixbuf_new_from_file("newmail.png", NULL); // GError **error);
GdkPixbuf *dest = gdk_pixbuf_copy(special_icon);
int w=gdk_pixbuf_get_width(special_icon);
int h=gdk_pixbuf_get_height(special_icon);
// prepare colors/alpha
GdkColormap* cmap=gdk_screen_get_system_colormap(gdk_screen_get_default());
int screen_depth=24;
GdkVisual* visual = gdk_colormap_get_visual(cmap);
screen_depth = visual->depth;
GdkColor fore = { 0, 0, 0, 0 };
GdkColor alpha = { 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF};
gdk_color_parse(color, &fore);
if(fore.red==alpha.red && fore.green==alpha.green && fore.blue==alpha.blue) {
alpha.red=0; // make sure alpha is different from fore
}
gdk_colormap_alloc_color (cmap, &fore, TRUE, TRUE);
gdk_colormap_alloc_color (cmap, &alpha, TRUE, TRUE);
// build pixmap with rectangle
GdkPixmap *pm = gdk_pixmap_new (NULL, w, h, screen_depth);
cairo_t *cr = gdk_cairo_create(pm);
gdk_cairo_set_source_color(cr, &alpha);
/* void gdk_cairo_set_source_color (cairo_t *cr, */
/* const GdkColor *color); */
cairo_rectangle(cr, 0, 0, w, h);
/* void cairo_rectangle (cairo_t *cr, */
/* double x, */
/* double y, */
/* double width, */
/* double height); */
cairo_set_source_rgb(cr, 1, 1, 1);
cairo_fill(cr);
// build text
GtkWidget *scratch = gtk_window_new(GTK_WINDOW_TOPLEVEL);
PangoLayout *layout = gtk_widget_create_pango_layout(scratch, NULL);
gtk_widget_destroy(scratch);
PangoFontDescription *fnt = pango_font_description_from_string("Sans 18");
pango_font_description_set_weight (fnt,PANGO_WEIGHT_SEMIBOLD);
pango_layout_set_spacing (layout,0);
pango_layout_set_font_description (layout, fnt);
pango_layout_set_text (layout, (gchar *)text,-1);
int tw=0;
int th=0;
int sz;
int border=4;
pango_layout_get_pixel_size(layout, &tw, &th);
while( (tw>w - border || th > h - border)) //fit text to the icon by decreasing font size
{
sz=pango_font_description_get_size (fnt);
if(sz<MIN_FONT_SIZE) {
sz=MIN_FONT_SIZE;
break;
}
sz-=PANGO_SCALE;
pango_font_description_set_size (fnt,sz);
pango_layout_set_font_description (layout, fnt);
pango_layout_get_pixel_size(layout, &tw, &th);
}
pango_font_description_free (fnt);
// center text
int px, py;
px=(w-tw)/2;
py=(h-th)/2;
// draw text on pixmap
gdk_cairo_set_source_color(cr, &fore);
cairo_move_to (cr, px, py);
pango_cairo_show_layout (cr, layout);
cairo_destroy(cr);
g_object_unref (layout);
GdkPixbuf *buf = gdk_pixbuf_get_from_drawable (NULL, pm, NULL, 0, 0, 0, 0, w, h);
g_object_unref (pm);
GdkPixbuf *alpha_buf = gdk_pixbuf_add_alpha(buf, TRUE, (guchar)alpha.red, (guchar)alpha.green, (guchar)alpha.blue);
g_object_unref (buf);
//merge the rendered text on top
gdk_pixbuf_composite(alpha_buf,dest,0,0,w,h,0,0,1,1,GDK_INTERP_NEAREST,255);
g_object_unref(alpha_buf);
/* gdk_pixbuf_composite(buf,dest,0,0,w,h,0,0,1,1,GDK_INTERP_NEAREST,255); */
/* g_object_unref(buf); */
gtk_status_icon_set_from_pixbuf(GTK_STATUS_ICON(tray_icon), GDK_PIXBUF(dest));
}
int main(int argc, char **argv) {
GtkStatusIcon *tray_icon;
gtk_init(&argc, &argv);
tray_icon = create_tray_icon();
GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (window), "GtkStatusIcon Example");
gtk_widget_set_size_request (window, 200, -1);
/* Set a handler for delete_event that immediately exits GTK. */
g_signal_connect (G_OBJECT (window), "delete_event",
G_CALLBACK (delete_event), NULL);
g_signal_connect(G_OBJECT(tray_icon), "activate", G_CALLBACK(winShowHide), window);
gtk_widget_show_all (window);
/* TESTING */
SetIconText(tray_icon,"1", "#000000");
gtk_main();
return 0;
}