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#include "gtk4-layer-shell.h"
#include <gtk/gtk.h>
static void activate(GtkApplication* app, void* _data) {
(void)_data;
// Create a normal GTK window however you like
GtkWindow* gtk_window = GTK_WINDOW(gtk_application_window_new(app));
// Before the window is first realized, set it up to be a layer surface
gtk_layer_init_for_window(gtk_window);
// Order below normal windows
gtk_layer_set_layer(gtk_window, GTK_LAYER_SHELL_LAYER_TOP);
// Push other windows out of the way
gtk_layer_auto_exclusive_zone_enable(gtk_window);
// We don't need to get keyboard input
// gtk_layer_set_keyboard_mode(gtk_window, GTK_LAYER_SHELL_KEYBOARD_MODE_NONE); // NONE is default
// The margins are the gaps around the window's edges
// Margins and anchors can be set like this...
gtk_layer_set_margin(gtk_window, GTK_LAYER_SHELL_EDGE_LEFT, 40);
gtk_layer_set_margin(gtk_window, GTK_LAYER_SHELL_EDGE_RIGHT, 40);
gtk_layer_set_margin(gtk_window, GTK_LAYER_SHELL_EDGE_TOP, 20);
gtk_layer_set_margin(gtk_window, GTK_LAYER_SHELL_EDGE_BOTTOM, 0); // 0 is default
// ... or like this
// Anchors are if the window is pinned to each edge of the output
static const gboolean anchors[] = {TRUE, FALSE, FALSE, TRUE};
for (int i = 0; i < GTK_LAYER_SHELL_EDGE_ENTRY_NUMBER; i++) {
gtk_layer_set_anchor(gtk_window, i, anchors[i]);
}
// Set up a widget
GtkWidget* label = gtk_label_new("");
gtk_label_set_markup(
GTK_LABEL(label),
"<span font_desc=\"100.0\">"
"GTK Layer\nShell example!"
"</span>"
);
gtk_window_set_child(gtk_window, label);
gtk_window_present(gtk_window);
}
int main(int argc, char **argv) {
GtkApplication* app = gtk_application_new("com.github.wmww.gtk4-layer-shell.example", G_APPLICATION_DEFAULT_FLAGS);
g_signal_connect(app, "activate", G_CALLBACK(activate), NULL);
int status = g_application_run(G_APPLICATION(app), argc, argv);
g_object_unref(app);
return status;
}
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