/*
 * GDSII-Converter
 * Copyright (C) 2018  Mario Hüttel <mario.huettel@gmx.net>
 *
 * This file is part of GDSII-Converter.
 *
 * GDSII-Converter is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * GDSII-Converter is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GDSII-Converter.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "cairo-output.h"
#include <math.h>
#include <stdlib.h>
#include <cairo.h>
#include <cairo-pdf.h>

struct cairo_layer {
	cairo_t *cr;
	cairo_surface_t *rec;
	struct layer_info *linfo;
};

void cairo_render_cell_to_pdf(struct gds_cell *cell, GList *layer_infos, char *pdf_file, double scale)
{
	cairo_surface_t *surface;
	cairo_t *cr;
	struct layer_info *linfo;
	struct cairo_layer *layers;
	struct cairo_layer *lay;
	GList *info_list;
	int i;

	layers = (struct cairo_layer *)calloc(MAX_LAYERS, sizeof(struct cairo_layer));

	/* Clear layers */
	for (i = 0; i < MAX_LAYERS; i++) {
		layers[i].cr = NULL;
		layers[i].rec = NULL;
	}

	/* Create recording surface for each layer */
	for (info_list = layer_infos; info_list != NULL; info_list = g_list_next(info_list)) {
		linfo = (struct layer_info *)info_list->data;
		if (linfo->layer < MAX_LAYERS) {
			lay = &(layers[(unsigned int)linfo->layer]);
			lay->linfo = linfo;
			lay->rec = cairo_recording_surface_create(CAIRO_CONTENT_COLOR_ALPHA,
								  NULL);
			lay->cr = cairo_create(layers[(unsigned int)linfo->layer].rec);
			cairo_scale(lay->cr, 1/scale, 1/scale);
		} else {
			printf("Layer number (%d) too high!\n", linfo->layer);
			goto ret_clear_layers;
		}
	}


ret_clear_layers:
	for (i = 0; i < MAX_LAYERS; i++) {
		lay = &layers[i];
		cairo_destroy(lay->cr);
		cairo_surface_destroy(lay->rec);
	}
	free(layers);

	printf("cairo export not yet implemented!\n");
}