remove image if exists

Makefile

@@ -0,0 +1,14 @@
+CC=clang
+CFLAGS=`pkg-config --cflags gtk4`
+CLIBS=`pkg-config --libs gtk4`
+SOURCES= main.c
+EXECUTABLE=shakalizator.out
+.PHONY: all clean
+
+all: $(EXECUTABLE)
+
+$(EXECUTABLE):
+	$(CC) $(CFLAGS) $(SOURCES) -o $(EXECUTABLE) $(CLIBS)
+
+clean:
+	rm $(EXECUTABLE)

main.c

@@ -0,0 +1,74 @@
+#include <gtk/gtk.h>
+#include <stdio.h>
+
+typedef struct{
+	GtkApplication *app;
+	GtkWidget *window , *box ,*input, *image;
+	char dir[256];
+} Appdata;
+
+static void load_image(Appdata *data){
+	GError *error = NULL;
+	if (data->image != NULL){
+		gtk_box_remove(data->box,GTK_WIDGET(data->image));
+	}
+	GdkPixbuf *pix = gdk_pixbuf_new_from_file (("%s", data->dir), &error);
+	if (pix == NULL){
+	    g_printerr("Error loading file: #%d %s\n", error->code, error->message);
+	    g_error_free(error);
+	    exit (1);
+	}
+	data->image = gtk_image_new_from_pixbuf(pix);
+	gtk_box_append(GTK_BOX(data->box),data->image);
+}
+
+// activates after enter dir in input
+void on_entry_activate(GtkEntry *entry, Appdata *data){
+	const gchar *user_text;
+    user_text = gtk_editable_get_text(GTK_EDITABLE(entry));
+    g_print("input: %s\n", user_text);
+    // check empty input
+	if (strcmp(user_text, "") == 0 || strcmp(user_text, " ") == 0){
+		snprintf(data->dir, sizeof(data->dir), "/");
+		gtk_editable_set_text(GTK_EDITABLE(data->input), "/");
+	}
+	else{
+		snprintf(data->dir, sizeof(data->dir), "%s", user_text);
+		gtk_editable_set_text(GTK_EDITABLE(data->input), ("%s", data->dir));
+	}
+	load_image(data);
+}
+
+// make input line
+static void input_dir(Appdata *data){
+	data->input = gtk_entry_new();
+	gtk_editable_set_text(GTK_EDITABLE(data->input), ("%s", data->dir));
+	g_signal_connect(data->input, "activate", G_CALLBACK(on_entry_activate), data);
+	g_print("Set input line\n");
+	gtk_box_append (GTK_BOX (data->box), data->input);
+}
+
+static void app_activate (GtkApplication *app, gpointer *user_data){
+	Appdata *data = (Appdata *)user_data;
+    data->window = gtk_application_window_new (GTK_APPLICATION(app));
+	gtk_window_set_title (GTK_WINDOW (data->window), "Shakalizator");
+	gtk_window_set_default_size (GTK_WINDOW (data->window), 600, 400);
+	gtk_window_set_application(GTK_WINDOW(data->window),app);
+	gtk_window_present(GTK_WINDOW(data->window));
+	data->box = gtk_box_new(GTK_ORIENTATION_VERTICAL,10);
+	gtk_widget_set_valign(data->box,GTK_ALIGN_START);
+	gtk_window_set_child(GTK_WINDOW(data->window), data->box);
+	input_dir(data);
+	printf("Present window %d\n", data->window);
+	g_print("Started\n");
+}
+
+int main (int argc, char **argv){
+	Appdata *data = g_new0(Appdata,1);
+	data->app = gtk_application_new("fun.kotyara.shakalizator", G_APPLICATION_DEFAULT_FLAGS);
+	g_signal_connect (data->app, "activate",G_CALLBACK(app_activate),data);
+	int status = g_application_run (G_APPLICATION (data->app), argc, argv);
+    g_object_unref(data->app);
+    g_free(data);
+    return status;
+}