finished first version of Cairo export

CMakeLists.txt

@@ -13,10 +13,11 @@ link_directories(${GLIB_LINK_DIRS} ${GTK3_LINK_DIRS} ${CAIRO_LINK_DIRS})
 add_definitions(${GLIB2_CFLAGS_OTHER})
 
 
-aux_source_directory("layer-widget" LAYER_SOURCES)
+aux_source_directory("widgets" LAYER_SOURCES)
 aux_source_directory("tree-renderer" RENDERER_SOURCES)
 aux_source_directory("gds-parser" PARSER_SOURCES)
 aux_source_directory("latex-output" LATEX_SOURCES)
+aux_source_directory("cairo-output" CAIRO_SOURCES)
 set(SOURCE "main.c" "layer-selector.c")
 
 
@@ -26,6 +27,7 @@ set(SOURCE
   ${RENDERER_SOURCES}
   ${PARSER_SOURCES}
   ${LATEX_SOURCES}
+  ${CAIRO_SOURCES}
 )
 
 add_compile_options(-Wall)

cairo-output/cairo-output.c

@@ -0,0 +1,248 @@
+/*
+ * 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;
+};
+
+static void revert_inherited_transform(struct cairo_layer *layers)
+{
+	int i;
+
+	for (i = 0; i < MAX_LAYERS; i++) {
+		if (layers[i].cr == NULL)
+			continue;
+		cairo_restore(layers[i].cr);
+	}
+}
+
+static void apply_inherited_transform_to_all_layers(struct cairo_layer *layers,
+						    const struct gds_point *origin,
+						    double magnification,
+						    gboolean flipping,
+						    double rotation,
+						    double scale)
+{
+	int i;
+	cairo_t *temp_layer_cr;
+
+	for (i = 0; i < MAX_LAYERS; i++) {
+		temp_layer_cr = layers[i].cr;
+		if (temp_layer_cr == NULL)
+			continue;
+
+		/* Save the state and apply transformation */
+		cairo_save(temp_layer_cr);
+		cairo_translate(temp_layer_cr, (double)origin->x/scale, (double)origin->y/scale);
+		cairo_rotate(temp_layer_cr, M_PI*rotation/180.0);
+		cairo_scale(temp_layer_cr, magnification,
+			    (flipping == TRUE ? -magnification : magnification));
+	}
+}
+
+static void render_cell(struct gds_cell *cell, struct cairo_layer *layers, double scale)
+{
+	GList *instance_list;
+	struct gds_cell *temp_cell;
+	struct gds_cell_instance *cell_instance;
+	GList *gfx_list;
+	struct gds_graphics *gfx;
+	GList *vertex_list;
+	struct gds_point *vertex;
+	cairo_t *cr;
+
+	/* Render child cells */
+	for (instance_list = cell->child_cells; instance_list != NULL; instance_list = instance_list->next) {
+		cell_instance = (struct gds_cell_instance *)instance_list->data;
+		if ((temp_cell = cell_instance->cell_ref) != NULL) {
+			apply_inherited_transform_to_all_layers(layers,
+								&cell_instance->origin,
+								cell_instance->magnification,
+								cell_instance->flipped,
+								cell_instance->angle,
+								scale);
+			render_cell(temp_cell, layers, scale);
+			revert_inherited_transform(layers);
+		}
+	}
+
+	/* Render graphics */
+	for (gfx_list = cell->graphic_objs; gfx_list != NULL; gfx_list = gfx_list->next) {
+		gfx = (struct gds_graphics *)gfx_list->data;
+
+		/* Get layer renderer */
+		if (gfx->layer >= MAX_LAYERS)
+			continue;
+		if ((cr = layers[gfx->layer].cr) == NULL)
+			continue;
+
+		/* Apply settings */
+		cairo_set_line_width(cr, (gfx->width_absolute ? gfx->width_absolute/scale : 1));
+
+		switch (gfx->path_render_type) {
+		case PATH_FLUSH:
+			cairo_set_line_cap(cr, CAIRO_LINE_CAP_BUTT);
+			break;
+		case PATH_ROUNDED:
+			cairo_set_line_cap(cr, CAIRO_LINE_CAP_ROUND);
+			break;
+		case PATH_SQUARED:
+			cairo_set_line_cap(cr, CAIRO_LINE_CAP_SQUARE);
+			break;
+		}
+
+		/* Add vertices */
+		for (vertex_list = gfx->vertices; vertex_list != NULL; vertex_list = vertex_list->next) {
+			vertex = (struct gds_point *)vertex_list->data;
+
+			/* If first point -> move to, else line to */
+			if (vertex_list->prev == NULL)
+				cairo_move_to(cr, vertex->x/scale, vertex->y/scale);
+			else
+				cairo_line_to(cr, vertex->x/scale, vertex->y/scale);
+
+		}
+
+		/* Create graphics object */
+		switch (gfx->gfx_type) {
+		case GRAPHIC_PATH:
+			cairo_stroke(cr);
+			break;
+		case GRAPHIC_BOX:
+		case GRAPHIC_POLYGON:
+			cairo_set_line_width(cr, 0.1/scale);
+			cairo_close_path(cr);
+			cairo_stroke_preserve(cr); // Prevent graphic glitches
+			cairo_fill(cr);
+			break;
+		}
+
+	}
+
+}
+
+void cairo_render_cell_to_pdf(struct gds_cell *cell, GList *layer_infos, char *pdf_file, double scale)
+{
+	cairo_surface_t *pdf_surface;
+	cairo_t *pdf_cr;
+	struct layer_info *linfo;
+	struct cairo_layer *layers;
+	struct cairo_layer *lay;
+	GList *info_list;
+	int i;
+	double rec_x0, rec_y0, rec_width, rec_height;
+	double xmin = INT32_MAX, xmax = INT32_MIN, ymin = INT32_MAX, ymax = INT32_MIN;
+
+	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, -1); // Fix coordinate system
+			cairo_set_source_rgb(lay->cr, linfo->color.red, linfo->color.green, linfo->color.blue);
+		} else {
+			printf("Layer number (%d) too high!\n", linfo->layer);
+			goto ret_clear_layers;
+		}
+	}
+
+
+	render_cell(cell, layers, scale);
+
+	/* get size of image and top left coordinate */
+	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) {
+			printf("Layer outside of Spec.\n");
+			continue;
+		}
+
+		/* Print size */
+		cairo_recording_surface_ink_extents(layers[linfo->layer].rec, &rec_x0, &rec_y0,
+				&rec_width, &rec_height);
+		printf("Size of layer %d: %lf -- %lf\n", linfo->layer,
+		       rec_width, rec_height);
+
+		/* update bounding box */
+		xmin = MIN(xmin, rec_x0);
+		xmax = MAX(xmax, rec_x0);
+		ymin = MIN(ymin, rec_y0);
+		ymax = MAX(ymax, rec_y0);
+		xmin = MIN(xmin, rec_x0+rec_width);
+		xmax = MAX(xmax, rec_x0+rec_width);
+		ymin = MIN(ymin, rec_y0+rec_height);
+		ymax = MAX(ymax, rec_y0+rec_height);
+
+	}
+
+	printf("Bounding box: (%lf,%lf) -- (%lf,%lf)\n", xmin, ymin, xmax, ymax);
+
+	pdf_surface = cairo_pdf_surface_create(pdf_file, xmax-xmin, ymax-ymin);
+	pdf_cr = cairo_create(pdf_surface);
+
+	/* Write layers to PDF */
+	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) {
+			printf("Layer outside of Spec.\n");
+			continue;
+		}
+
+		cairo_set_source_surface(pdf_cr, layers[linfo->layer].rec, -xmin, -ymin);
+		cairo_paint_with_alpha(pdf_cr, linfo->color.alpha);
+	}
+
+	cairo_show_page(pdf_cr);
+	cairo_destroy(pdf_cr);
+	cairo_surface_destroy(pdf_surface);
+
+ret_clear_layers:
+	for (i = 0; i < MAX_LAYERS; i++) {
+		lay = &layers[i];
+		if(lay->cr) {
+			cairo_destroy(lay->cr);
+			cairo_surface_destroy(lay->rec);
+		}
+	}
+	free(layers);
+
+	printf("cairo export finished. It might still be buggy!\n");
+}

cairo-output/cairo-output.h

@@ -0,0 +1,30 @@
+/*
+ * 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/>.
+ */
+
+#ifndef __CAIRO_OUTPUT_H__
+#define __CAIRO_OUTPUT_H__
+
+#include "../layer-selector.h"
+#include "../gds-parser/gds-types.h"
+
+#define MAX_LAYERS (300)
+
+void cairo_render_cell_to_pdf(struct gds_cell *cell, GList *layer_infos, char *pdf_file, double scale);
+
+#endif /* __CAIRO_OUTPUT_H__ */

gds-parser/gds-parser.c

@@ -37,8 +37,6 @@
 
 #define GDS_ERROR(fmt, ...) printf("[PARSE_ERROR] " fmt "\n", ##__VA_ARGS__)
 #define GDS_WARN(fmt, ...) printf("[PARSE_WARNING] " fmt "\n", ##__VA_ARGS__)
-#define MIN(a,b) (((a) < (b)) ? (a) : (b))
-#define MAX(a,b) (((a) > (b)) ? (a) : (b))
 
 enum record {
 	INVALID = 0x0000,

gds-parser/gds-types.h

@@ -5,6 +5,8 @@
 #include <glib.h>
 
 #define CELL_NAME_MAX (100)
+#define MIN(a,b) (((a) < (b)) ? (a) : (b))
+#define MAX(a,b) (((a) > (b)) ? (a) : (b))
 
 enum graphics_type {GRAPHIC_PATH = 0, GRAPHIC_POLYGON = 1, GRAPHIC_BOX};
 enum path_type {PATH_FLUSH = 0, PATH_ROUNDED = 1, PATH_SQUARED = 2};

glade/dialog.glade

@@ -0,0 +1,90 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Generated with glade 3.22.1 -->
+<interface>
+  <requires lib="gtk+" version="3.20"/>
+  <object class="GtkAdjustment" id="adjustment1">
+    <property name="lower">1</property>
+    <property name="upper">3000</property>
+    <property name="value">1000</property>
+    <property name="step_increment">10</property>
+    <property name="page_increment">1000</property>
+  </object>
+  <object class="GtkBox" id="dialog-box">
+    <property name="visible">True</property>
+    <property name="can_focus">False</property>
+    <property name="orientation">vertical</property>
+    <child>
+      <object class="GtkRadioButton" id="latex-radio">
+        <property name="label" translatable="yes">Generate LaTeX/TikZ output</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">False</property>
+        <property name="active">True</property>
+        <property name="draw_indicator">True</property>
+      </object>
+      <packing>
+        <property name="expand">False</property>
+        <property name="fill">True</property>
+        <property name="position">0</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkRadioButton" id="cairo-radio">
+        <property name="label" translatable="yes">Render PDF using Cairographics</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">False</property>
+        <property name="active">True</property>
+        <property name="draw_indicator">True</property>
+        <property name="group">latex-radio</property>
+      </object>
+      <packing>
+        <property name="expand">False</property>
+        <property name="fill">True</property>
+        <property name="position">1</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkScale" id="dialog-scale">
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="adjustment">adjustment1</property>
+        <property name="round_digits">0</property>
+        <property name="digits">0</property>
+      </object>
+      <packing>
+        <property name="expand">False</property>
+        <property name="fill">True</property>
+        <property name="position">2</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkCheckButton" id="standalone-check">
+        <property name="label" translatable="yes">Configure LaTeX as standalone document</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">False</property>
+        <property name="draw_indicator">True</property>
+      </object>
+      <packing>
+        <property name="expand">False</property>
+        <property name="fill">True</property>
+        <property name="position">3</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkCheckButton" id="layer-check">
+        <property name="label" translatable="yes">Generate PDF Layers</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">False</property>
+        <property name="draw_indicator">True</property>
+      </object>
+      <packing>
+        <property name="expand">False</property>
+        <property name="fill">True</property>
+        <property name="position">4</property>
+      </packing>
+    </child>
+  </object>
+</interface>

glade/resources.xml

@@ -3,6 +3,7 @@
   <gresource prefix="/">
     <file compressed="true">main.glade</file>
     <file>layer-widget.glade</file>
+    <file>dialog.glade</file>
   </gresource>
 </gresources>
 

latex-output/latex-output.c

@@ -81,7 +81,7 @@ static gboolean write_layer_env(FILE *tex_file, GdkRGBA *color, int layer, GList
 }
 
 
-static void generate_graphics(FILE *tex_file, GList *graphics, GList *linfo, GString *buffer)
+static void generate_graphics(FILE *tex_file, GList *graphics, GList *linfo, GString *buffer, double scale)
 {
 	GList *temp;
 	GList *temp_vertex;
@@ -102,7 +102,7 @@ static void generate_graphics(FILE *tex_file, GList *graphics, GList *linfo, GSt
 				/* Append vertices */
 				for (temp_vertex = gfx->vertices; temp_vertex != NULL; temp_vertex = temp_vertex->next) {
 					pt = (struct gds_point *)temp_vertex->data;
-					g_string_printf(buffer, "(%lf pt, %lf pt) -- ", ((double)pt->x)/1000.0, ((double)pt->y)/1000.0);
+					g_string_printf(buffer, "(%lf pt, %lf pt) -- ", ((double)pt->x)/scale, ((double)pt->y)/scale);
 					WRITEOUT_BUFFER(buffer);
 				}
 				g_string_printf(buffer, "cycle;\n");
@@ -120,7 +120,7 @@ static void generate_graphics(FILE *tex_file, GList *graphics, GList *linfo, GSt
 				}
 
 				g_string_printf(buffer, "\\draw[line width=%lf pt, draw={c%d}, opacity={%lf}, cap=%s] ",
-						gfx->width_absolute/1000.0, gfx->layer, color.alpha,
+						gfx->width_absolute/scale, gfx->layer, color.alpha,
 						line_caps[gfx->path_render_type]);
 				WRITEOUT_BUFFER(buffer);
 
@@ -128,8 +128,8 @@ static void generate_graphics(FILE *tex_file, GList *graphics, GList *linfo, GSt
 				for (temp_vertex = gfx->vertices; temp_vertex != NULL; temp_vertex = temp_vertex->next) {
 					pt = (struct gds_point *)temp_vertex->data;
 					g_string_printf(buffer, "(%lf pt, %lf pt)%s",
-							((double)pt->x)/1000.0,
-							((double)pt->y)/1000.0,
+							((double)pt->x)/scale,
+							((double)pt->y)/scale,
 							(temp_vertex->next ? " -- " : ""));
 					WRITEOUT_BUFFER(buffer);
 				}
@@ -145,14 +145,14 @@ static void generate_graphics(FILE *tex_file, GList *graphics, GList *linfo, GSt
 }
 
 
-static void render_cell(struct gds_cell *cell, GList *layer_infos, FILE *tex_file, GString *buffer)
+static void render_cell(struct gds_cell *cell, GList *layer_infos, FILE *tex_file, GString *buffer, double scale)
 {
 
 	GList *list_child;
 	struct gds_cell_instance *inst;
 
 	/* Draw polygons of current cell */
-	generate_graphics(tex_file, cell->graphic_objs, layer_infos, buffer);
+	generate_graphics(tex_file, cell->graphic_objs, layer_infos, buffer, scale);
 
 	/* Draw polygons of childs */
 	for (list_child = cell->child_cells; list_child != NULL; list_child = list_child->next) {
@@ -164,7 +164,7 @@ static void render_cell(struct gds_cell *cell, GList *layer_infos, FILE *tex_fil
 
 		/* generate translation scope */
 		g_string_printf(buffer, "\\begin{scope}[shift={(%lf pt,%lf pt)}]\n",
-				((double)inst->origin.x)/1000.0,((double)inst->origin.y)/1000.0);
+				((double)inst->origin.x)/scale,((double)inst->origin.y)/scale);
 		WRITEOUT_BUFFER(buffer);
 
 		g_string_printf(buffer, "\\begin{scope}[rotate=%lf]\n", inst->angle);
@@ -174,7 +174,7 @@ static void render_cell(struct gds_cell *cell, GList *layer_infos, FILE *tex_fil
 				inst->magnification);
 		WRITEOUT_BUFFER(buffer);
 
-		render_cell(inst->cell_ref, layer_infos, tex_file, buffer);
+		render_cell(inst->cell_ref, layer_infos, tex_file, buffer, scale);
 
 		g_string_printf(buffer, "\\end{scope}\n");
 		WRITEOUT_BUFFER(buffer);
@@ -188,7 +188,8 @@ static void render_cell(struct gds_cell *cell, GList *layer_infos, FILE *tex_fil
 
 }
 
-void render_cell_to_code(struct gds_cell *cell, GList *layer_infos, FILE *tex_file)
+void latex_render_cell_to_code(struct gds_cell *cell, GList *layer_infos, FILE *tex_file, double scale,
+			       gboolean create_pdf_layers, gboolean standalone_document)
 {
 	GString *working_line;
 
@@ -200,9 +201,11 @@ void render_cell_to_code(struct gds_cell *cell, GList *layer_infos, FILE *tex_fi
 	working_line = g_string_new_len(NULL, LATEX_LINE_BUFFER_KB*1024);
 
 	/* standalone foo */
-	g_string_printf(working_line, "\\newif\\iftestmode\n\\testmodefalse %% Change to true for standalone rendering\n");
+	g_string_printf(working_line, "\\newif\\iftestmode\n\\testmode%s\n",
+			(standalone_document ? "true" : "false"));
 	WRITEOUT_BUFFER(working_line);
-	g_string_printf(working_line, "\\newif\\ifcreatepdflayers\n\\createpdflayersfalse %% Change to true for Embedded layers in PDF output\n");
+	g_string_printf(working_line, "\\newif\\ifcreatepdflayers\n\\createpdflayers%s\n",
+			(create_pdf_layers ? "true" : "false"));
 	WRITEOUT_BUFFER(working_line);
 	g_string_printf(working_line, "\\iftestmode\n");
 	WRITEOUT_BUFFER(working_line);
@@ -219,7 +222,7 @@ void render_cell_to_code(struct gds_cell *cell, GList *layer_infos, FILE *tex_fi
 	WRITEOUT_BUFFER(working_line);
 
 	/* Generate graphics output */
-	render_cell(cell, layer_infos, tex_file, working_line);
+	render_cell(cell, layer_infos, tex_file, working_line, scale);
 
 
 	g_string_printf(working_line, "\\end{tikzpicture}\n");

latex-output/latex-output.h

@@ -27,6 +27,7 @@
 
 #define LATEX_LINE_BUFFER_KB (10)
 
-void render_cell_to_code(struct gds_cell *cell, GList *layer_infos, FILE *tex_file);
+void latex_render_cell_to_code(struct gds_cell *cell, GList *layer_infos, FILE *tex_file, double scale,
+			       gboolean create_pdf_layers, gboolean standalone_document);
 
 #endif /* __LATEX_OUTPUT_H__ */

layer-selector.c

@@ -19,7 +19,7 @@
 
 #include "layer-selector.h"
 #include "gds-parser/gds-parser.h"
-#include "layer-widget/layer-element.h"
+#include "widgets/layer-element.h"
 #include <glib.h>
 #include <string.h>
 #include <stdio.h>

main.c

@@ -20,10 +20,11 @@
 #include <stdio.h>
 #include "gds-parser/gds-parser.h"
 #include <gtk/gtk.h>
-#include "layer-widget/layer-element.h"
 #include "layer-selector.h"
 #include "tree-renderer/tree-store.h"
 #include "latex-output/latex-output.h"
+#include "widgets/conv-settings-dialog.h"
+#include "cairo-output/cairo-output.h"
 
 struct open_button_data {
 	GtkWindow *main_window;
@@ -161,14 +162,20 @@ end_destroy:
 
 static void on_convert_clicked(gpointer button, gpointer user)
 {
+	static struct render_settings sett = {
+		.scale = 1000.0f,
+				.renderer = RENDERER_LATEX_TIKZ,
+	};
 	struct convert_button_data *data = (struct convert_button_data *)user;
 	GtkTreeSelection *selection;
 	GtkTreeIter iter;
 	GtkTreeModel *model;
 	GList *layer_list;
 	struct gds_cell *cell_to_render;
-	FILE *tex_file;
+	FILE *output_file;
 	GtkWidget *dialog;
+	RendererSettingsDialog *settings;
+	GtkFileFilter *filter;
 	gint res;
 	char *file_name;
 
@@ -185,21 +192,57 @@ static void on_convert_clicked(gpointer button, gpointer user)
 	/* Get layers that are rendered */
 	layer_list = export_rendered_layer_info();
 
+	settings = renderer_settings_dialog_new(GTK_WINDOW(data->main_window));
+	renderer_settings_dialog_set_settings(settings, &sett);
+	res = gtk_dialog_run(GTK_DIALOG(settings));
+	if (res == GTK_RESPONSE_OK) {
+		renderer_settings_dialog_get_settings(settings, &sett);
+		gtk_widget_destroy(GTK_WIDGET(settings));
+	} else {
+		gtk_widget_destroy(GTK_WIDGET(settings));
+		goto ret_layer_destroy;
+	}
+
+
+
 	/* save file dialog */
-	dialog = gtk_file_chooser_dialog_new("Save TeX File", GTK_WINDOW(data->main_window), GTK_FILE_CHOOSER_ACTION_SAVE,
+	dialog = gtk_file_chooser_dialog_new((sett.renderer == RENDERER_LATEX_TIKZ
+					      ? "Save LaTeX File" : "Save PDF"),
+					     GTK_WINDOW(data->main_window), GTK_FILE_CHOOSER_ACTION_SAVE,
 					     "Cancel", GTK_RESPONSE_CANCEL, "Save", GTK_RESPONSE_ACCEPT, NULL);
+	/* Set file filter according to settings */
+	filter = gtk_file_filter_new();
+	if (sett.renderer == RENDERER_LATEX_TIKZ) {
+		gtk_file_filter_add_pattern(filter, "*.tex");
+		gtk_file_filter_set_name(filter, "LaTeX-Files");
+	} else {
+		gtk_file_filter_add_pattern(filter, "*.pdf");
+		gtk_file_filter_set_name(filter, "PDF-Files");
+	}
+	gtk_file_chooser_add_filter(GTK_FILE_CHOOSER(dialog), filter);
+
 	res = gtk_dialog_run(GTK_DIALOG(dialog));
 	if (res == GTK_RESPONSE_ACCEPT) {
 		file_name = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(dialog));
-		tex_file = fopen(file_name, "w");
-		g_free(file_name);
 		gtk_widget_destroy(dialog);
-		render_cell_to_code(cell_to_render, layer_list, tex_file);
-		fclose(tex_file);
+
+		switch (sett.renderer) {
+		case RENDERER_LATEX_TIKZ:
+			output_file = fopen(file_name, "w");
+			latex_render_cell_to_code(cell_to_render, layer_list, output_file, sett.scale,
+						  sett.tex_pdf_layers, sett.tex_standalone);
+			fclose(output_file);
+			break;
+		case RENDERER_CAIROGRAPHICS:
+			cairo_render_cell_to_pdf(cell_to_render, layer_list, file_name, sett.scale);
+			break;
+		}
+		g_free(file_name);
+
 	} else {
 		gtk_widget_destroy(dialog);
 	}
-
+ret_layer_destroy:
 	g_list_free_full(layer_list, (GDestroyNotify)delete_layer_info_struct);
 }
 

widgets/conv-settings-dialog.c

@@ -0,0 +1,128 @@
+/*
+ * 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 "conv-settings-dialog.h"
+
+struct  _RendererSettingsDialog {
+		GtkDialog parent;
+		/* Private loot */
+		GtkWidget *radio_latex;
+		GtkWidget *radio_cairo;
+		GtkWidget *scale;
+		GtkWidget *layer_check;
+		GtkWidget *standalone_check;
+};
+
+G_DEFINE_TYPE(RendererSettingsDialog, renderer_settings_dialog, GTK_TYPE_DIALOG)
+
+
+
+static void renderer_settings_dialog_class_init(RendererSettingsDialogClass *klass)
+{
+	/*  No special code needed. Child cells are destroyed automatically due to reference counter */
+	return;
+}
+
+static void show_tex_options(RendererSettingsDialog *self)
+{
+	gtk_widget_show(self->layer_check);
+	gtk_widget_show(self->standalone_check);
+
+}
+
+static void hide_tex_options(RendererSettingsDialog *self)
+{
+	gtk_widget_hide(self->layer_check);
+	gtk_widget_hide(self->standalone_check);
+}
+
+static void latex_render_callback(GtkToggleButton *radio, RendererSettingsDialog *dialog)
+{
+	if (gtk_toggle_button_get_active(radio))
+		show_tex_options(dialog);
+	else
+		hide_tex_options(dialog);
+}
+
+static void renderer_settings_dialog_init(RendererSettingsDialog *self)
+{
+	GtkBuilder *builder;
+	GtkWidget *box;
+	GtkDialog *dialog;
+
+
+	dialog = &(self->parent);
+
+	builder = gtk_builder_new_from_resource("/dialog.glade");
+	box = GTK_WIDGET(gtk_builder_get_object(builder, "dialog-box"));
+	self->radio_latex = GTK_WIDGET(gtk_builder_get_object(builder, "latex-radio"));
+	self->radio_cairo = GTK_WIDGET(gtk_builder_get_object(builder, "cairo-radio"));
+	self->scale = GTK_WIDGET(gtk_builder_get_object(builder, "dialog-scale"));
+	self->standalone_check = GTK_WIDGET(gtk_builder_get_object(builder, "standalone-check"));
+	self->layer_check = GTK_WIDGET(gtk_builder_get_object(builder, "layer-check"));
+
+	gtk_dialog_add_buttons(dialog, "Cancel", GTK_RESPONSE_CANCEL, "OK", GTK_RESPONSE_OK, NULL);
+	gtk_container_add(GTK_CONTAINER(gtk_dialog_get_content_area(dialog)), box);
+	gtk_window_set_title(GTK_WINDOW(self), "Renderer Settings");
+
+	g_signal_connect(self->radio_latex, "toggled", G_CALLBACK(latex_render_callback), (gpointer)self);
+
+	g_object_unref(builder);
+}
+
+RendererSettingsDialog *renderer_settings_dialog_new(GtkWindow *parent)
+{
+	RendererSettingsDialog *res;
+
+	res = RENDERER_SETTINGS_DIALOG(g_object_new(RENDERER_TYPE_SETTINGS_DIALOG, NULL));
+	if (res && parent) {
+		gtk_window_set_transient_for(GTK_WINDOW(res), parent);
+	}
+	return res;
+}
+
+void renderer_settings_dialog_get_settings(RendererSettingsDialog *dialog, struct render_settings *settings)
+{
+	if (!settings || !dialog)
+		return;
+	settings->scale = gtk_range_get_value(GTK_RANGE(dialog->scale));
+	settings->renderer = (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(dialog->radio_latex)) == TRUE ? RENDERER_LATEX_TIKZ : RENDERER_CAIROGRAPHICS);
+	settings->tex_pdf_layers = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(dialog->layer_check));
+	settings->tex_standalone = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(dialog->standalone_check));
+}
+void renderer_settings_dialog_set_settings(RendererSettingsDialog *dialog, struct render_settings *settings)
+{
+	if (!settings || !dialog)
+		return;
+
+	gtk_range_set_value(GTK_RANGE(dialog->scale), settings->scale);
+	gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(dialog->layer_check), settings->tex_pdf_layers);
+	gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(dialog->standalone_check), settings->tex_standalone);
+
+	switch (settings->renderer) {
+	case RENDERER_LATEX_TIKZ:
+		gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(dialog->radio_latex), TRUE);
+		show_tex_options(dialog);
+		break;
+	case RENDERER_CAIROGRAPHICS:
+		hide_tex_options(dialog);
+		gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(dialog->radio_cairo), TRUE);
+		break;
+	}
+}

widgets/conv-settings-dialog.h

@@ -0,0 +1,48 @@
+/*
+ * 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/>.
+ */
+
+#ifndef __CONV_SETTINGS_DIALOG_H__
+#define __CONV_SETTINGS_DIALOG_H__
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+enum output_renderer {RENDERER_LATEX_TIKZ, RENDERER_CAIROGRAPHICS};
+
+G_DECLARE_FINAL_TYPE(RendererSettingsDialog, renderer_settings_dialog, RENDERER, SETTINGS_DIALOG, GtkDialog)
+
+RendererSettingsDialog *renderer_settings_dialog_new(GtkWindow *parent);
+
+#define RENDERER_TYPE_SETTINGS_DIALOG (renderer_settings_dialog_get_type())
+
+struct render_settings {
+	double scale;
+	enum output_renderer renderer;
+	gboolean tex_pdf_layers;
+	gboolean tex_standalone;
+};
+
+G_END_DECLS
+
+
+void renderer_settings_dialog_set_settings(RendererSettingsDialog *dialog, struct render_settings *settings);
+void renderer_settings_dialog_get_settings(RendererSettingsDialog *dialog, struct render_settings *settings);
+
+#endif /* __CONV_SETTINGS_DIALOG_H__ */

widgets/layer-element.h

@@ -38,12 +38,12 @@ typedef struct _LayerElementPriv {
 	GtkCheckButton *export;
 } LayerElementPriv;
 
-typedef struct _LayerElement {
+struct _LayerElement {
 	/* Inheritance */
 	GtkListBoxRow parent;
 	/* Custom Elements */
 	LayerElementPriv priv;
-} LayerElement;
+};
 
 GtkWidget *layer_element_new(void);