1 files changed, 99 insertions, 0 deletions
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..211de8b
--- /dev/null
+++ b/main.c
@@ -0,0 +1,99 @@
+#include <gtk-3.0/gtk/gtk.h>
+
+GtkWidget *window;
+GtkWidget *image;
+GdkPixbuf *pixbuf;
+GdkPixbuf *curr_pixbuf;
+int pixbuf_width, pixbuf_height;
+double aspect_ratio;
+
+static gboolean key_press(GtkWindow *window, gpointer data)
+{
+	GdkEventKey *event = (GdkEventKey *)data;
+	if (event->keyval == GDK_KEY_q) {
+		g_application_quit(G_APPLICATION(
+		    gtk_window_get_application(GTK_WINDOW(window))));
+		return FALSE;
+	} else
+		return TRUE;
+}
+
+void configure_callback(GtkWindow *window, GdkEvent *event, gpointer data)
+{
+	gint win_width, win_height;
+	gint new_pixbuf_width, new_pixbuf_height;
+	gtk_window_get_size(GTK_WINDOW(window), &win_width, &win_height);
+
+	if (win_width < pixbuf_width && win_height > pixbuf_height) {
+		new_pixbuf_width = win_width;
+		new_pixbuf_height = (double)new_pixbuf_width / aspect_ratio;
+	} else if (win_width > pixbuf_width && win_height < pixbuf_height) {
+		new_pixbuf_height = win_height;
+		new_pixbuf_width = (double)new_pixbuf_height * aspect_ratio;
+	} else if (win_width < pixbuf_width && win_height < pixbuf_height) {
+		if (((double)win_width / (double)win_height) > aspect_ratio) {
+			new_pixbuf_height = win_height;
+			new_pixbuf_width =
+			    ((double)new_pixbuf_height * aspect_ratio);
+		} else {
+			new_pixbuf_width = win_width;
+			new_pixbuf_height =
+			    (double)new_pixbuf_width / aspect_ratio;
+		}
+	} else {
+		new_pixbuf_width = pixbuf_width;
+		new_pixbuf_height = pixbuf_height;
+	}
+
+	gtk_container_remove(GTK_CONTAINER(window), GTK_WIDGET(image));
+	if (curr_pixbuf != NULL)
+		g_object_unref(curr_pixbuf);
+	curr_pixbuf =
+	    gdk_pixbuf_scale_simple(GDK_PIXBUF(pixbuf), new_pixbuf_width,
+				    new_pixbuf_height, GDK_INTERP_BILINEAR);
+	image = gtk_image_new_from_pixbuf(GDK_PIXBUF(curr_pixbuf));
+	gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(image));
+	gtk_widget_show_all(GTK_WIDGET(window));
+}
+
+static void activate(GtkApplication *app, gpointer user_data)
+{
+	GError *error = NULL;
+
+	window = gtk_application_window_new(app);
+	g_signal_connect(G_OBJECT(window), "configure-event",
+			 G_CALLBACK(configure_callback), NULL);
+	g_signal_connect(G_OBJECT(window), "key-press-event",
+			 G_CALLBACK(key_press), NULL);
+
+	gtk_window_set_title(GTK_WINDOW(window), "qwe");
+	gtk_window_set_default_size(GTK_WINDOW(window), 300, 300);
+	pixbuf = gdk_pixbuf_new_from_file(
+	    "/home/nirav/Downloads/Saved Pictures/bash help shortcuts.png",
+	    &error);
+	if (error) {
+		g_warning("gdk_pixbuf_new_from_file() failed with error: %s\n",
+			  error->message);
+		g_clear_error(&error);
+		return;
+	}
+
+	image = gtk_image_new_from_pixbuf(GDK_PIXBUF(pixbuf));
+	pixbuf_width = gdk_pixbuf_get_width(GDK_PIXBUF(pixbuf));
+	pixbuf_height = gdk_pixbuf_get_height(GDK_PIXBUF(pixbuf));
+	aspect_ratio = (double)pixbuf_width / (double)pixbuf_height;
+
+	gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(image));
+	gtk_widget_show_all(GTK_WIDGET(window));
+}
+
+int main(int argc, char *argv[])
+{
+	GtkApplication *app;
+	int status;
+	app = gtk_application_new("org.gtk.qwe", G_APPLICATION_FLAGS_NONE);
+	g_signal_connect(app, "activate", G_CALLBACK(activate), NULL);
+	status = g_application_run(G_APPLICATION(app), argc, argv);
+	g_object_unref(app);
+	return status;
+}