/*
 * To compile:
 *   cc test.c -o test $(pkg-config --libs --cflags gtk+-3.0 glib-2.0 cairo gio-2.0 poppler-glib)
 */

#include <stdlib.h>
#include <cairo/cairo.h>
#include <gio/gio.h>
#include <gio/gunixinputstream.h>
#include <gtk/gtk.h>
#include <poppler.h>

char *file;

gboolean draw_cb(GtkWidget *widget, cairo_t *cr, gpointer user_data) {
	PopplerDocument *document = poppler_document_new_from_file(file, NULL, NULL);
	PopplerPage *page = poppler_document_get_page(document, 0);

	cairo_set_source_rgb(cr, 1., 1., 1.);
	cairo_paint(cr);
	poppler_page_render(page, cr);

	g_object_unref(page);
	g_object_unref(document);
}

gboolean redraw(gpointer main_ptr) {
	gtk_widget_queue_draw(GTK_WIDGET(main_ptr));
	return TRUE;
}

int main(int argc, char *argv[]) {
	gtk_init(&argc, &argv);

	if(argc < 2) {
		printf("Syntax: test <pdf file>\n");
		exit(0);
	}
	GFile *arg = g_file_new_for_commandline_arg(argv[1]);
	file = g_file_get_uri(arg);
	g_object_unref(arg);

	GtkWidget *main = gtk_window_new(GTK_WINDOW_TOPLEVEL);
	gtk_widget_set_size_request(main, 800, 1000);
	g_signal_connect(main, "draw", G_CALLBACK(draw_cb), NULL);
	g_signal_connect(main, "destroy", G_CALLBACK(gtk_main_quit), NULL);
	gtk_widget_show_all(main);
	g_idle_add(redraw, main);

	gtk_main();
}