Finished SVG generating code

This commit is contained in:
Gergely Polonkai 2013-09-19 19:56:25 +02:00
parent 4b81d38bc6
commit 25e5abcbcb
3 changed files with 73 additions and 11 deletions

View File

@ -3,6 +3,8 @@
#include <libxml/parser.h> #include <libxml/parser.h>
#include <libxml/xpath.h> #include <libxml/xpath.h>
#include <libxml/tree.h> #include <libxml/tree.h>
#include <libxslt/xsltInternals.h>
#include <libxslt/transform.h>
#include <swe-glib.h> #include <swe-glib.h>
#include "ag-chart.h" #include "ag-chart.h"
@ -653,10 +655,12 @@ ag_chart_save_to_file(AgChart *chart, GFile *file, GError **err)
xmlFreeDoc(save_doc); xmlFreeDoc(save_doc);
} }
void gchar *
ag_chart_create_svg(AgChart *chart) ag_chart_create_svg(AgChart *chart, GError **err)
{ {
xmlDocPtr doc = create_save_doc(chart); xmlDocPtr doc = create_save_doc(chart),
xslt_doc,
svg_doc;
xmlNodePtr root_node = NULL, xmlNodePtr root_node = NULL,
ascmcs_node = NULL, ascmcs_node = NULL,
houses_node = NULL, houses_node = NULL,
@ -664,7 +668,10 @@ ag_chart_create_svg(AgChart *chart)
aspects_node = NULL, aspects_node = NULL,
antiscia_node = NULL, antiscia_node = NULL,
node = NULL; node = NULL;
gchar *value; gchar *value,
*stylesheet_path,
*xslt,
*save_content = NULL;
GList *houses, GList *houses,
*house, *house,
*planet, *planet,
@ -675,6 +682,10 @@ ag_chart_create_svg(AgChart *chart)
GEnumClass *planets_class, GEnumClass *planets_class,
*aspects_class, *aspects_class,
*antiscia_class; *antiscia_class;
guint xslt_length;
gint save_length;
GFile *xslt_file;
xsltStylesheetPtr xslt_proc;
root_node = xmlDocGetRootElement(doc); root_node = xmlDocGetRootElement(doc);
@ -682,6 +693,7 @@ ag_chart_create_svg(AgChart *chart)
houses = gswe_moment_get_house_cusps(GSWE_MOMENT(chart), NULL); houses = gswe_moment_get_house_cusps(GSWE_MOMENT(chart), NULL);
// Begin <ascmcs> node // Begin <ascmcs> node
g_debug("Generating theoretical points table");
ascmcs_node = xmlNewChild(root_node, NULL, BAD_CAST "ascmcs", NULL); ascmcs_node = xmlNewChild(root_node, NULL, BAD_CAST "ascmcs", NULL);
node = xmlNewChild(ascmcs_node, NULL, BAD_CAST "ascendant", NULL); node = xmlNewChild(ascmcs_node, NULL, BAD_CAST "ascendant", NULL);
@ -709,6 +721,7 @@ ag_chart_create_svg(AgChart *chart)
g_free(value); g_free(value);
// Begin <houses> node // Begin <houses> node
g_debug("Generating houses table");
houses_node = xmlNewChild(root_node, NULL, BAD_CAST "houses", NULL); houses_node = xmlNewChild(root_node, NULL, BAD_CAST "houses", NULL);
for (house = houses; house; house = g_list_next(house)) { for (house = houses; house; house = g_list_next(house)) {
@ -728,6 +741,7 @@ ag_chart_create_svg(AgChart *chart)
} }
// Begin <bodies> node // Begin <bodies> node
g_debug("Generating bodies table");
bodies_node = xmlNewChild(root_node, NULL, BAD_CAST "bodies", NULL); bodies_node = xmlNewChild(root_node, NULL, BAD_CAST "bodies", NULL);
planets_class = g_type_class_ref(GSWE_TYPE_PLANET); planets_class = g_type_class_ref(GSWE_TYPE_PLANET);
@ -755,9 +769,8 @@ ag_chart_create_svg(AgChart *chart)
g_free(value); g_free(value);
} }
g_debug("Generating aspects table");
// Begin <aspects> node // Begin <aspects> node
g_debug("Generating aspects table");
aspects_node = xmlNewChild(root_node, NULL, BAD_CAST "aspects", NULL); aspects_node = xmlNewChild(root_node, NULL, BAD_CAST "aspects", NULL);
aspects_class = g_type_class_ref(GSWE_TYPE_ASPECT); aspects_class = g_type_class_ref(GSWE_TYPE_ASPECT);
@ -784,9 +797,8 @@ ag_chart_create_svg(AgChart *chart)
g_type_class_unref(aspects_class); g_type_class_unref(aspects_class);
g_debug("Generating antiscia table");
// Begin <antiscia> node // Begin <antiscia> node
g_debug("Generating antiscia table");
antiscia_node = xmlNewChild(root_node, NULL, BAD_CAST "antiscia", NULL); antiscia_node = xmlNewChild(root_node, NULL, BAD_CAST "antiscia", NULL);
antiscia_class = g_type_class_ref(GSWE_TYPE_ANTISCION_AXIS); antiscia_class = g_type_class_ref(GSWE_TYPE_ANTISCION_AXIS);
@ -811,7 +823,48 @@ ag_chart_create_svg(AgChart *chart)
} }
g_type_class_unref(planets_class); g_type_class_unref(planets_class);
xmlSaveFormatFileEnc("-", doc, "UTF-8", 1);
// Now, doc contains the generated XML tree
// Now let's load the style sheet
stylesheet_path = g_strdup_printf("%s/%s", PKGDATADIR, "chart.xsl");
g_debug("Opening %s as a stylesheet", stylesheet_path);
xslt_file = g_file_new_for_path(stylesheet_path);
if (!g_file_load_contents(xslt_file, NULL, &xslt, &xslt_length, NULL, err)) {
xmlFreeDoc(doc); xmlFreeDoc(doc);
return NULL;
}
if ((xslt_doc = xmlReadMemory(xslt, xslt_length, "chart.xsl", NULL, 0)) == NULL) {
g_set_error(err, AG_CHART_ERROR, AG_CHART_ERROR_CORRUPT_FILE, "File '%s' can not be parsed as a stylesheet file.", stylesheet_path);
g_free(stylesheet_path);
g_free(xslt);
xmlFreeDoc(doc);
return NULL;
}
if ((xslt_proc = xsltParseStylesheetDoc(xslt_doc)) == NULL) {
g_set_error(err, AG_CHART_ERROR, AG_CHART_ERROR_CORRUPT_FILE, "File '%s' can not be parsed as a stylesheet file.", stylesheet_path);
g_free(stylesheet_path);
g_free(xslt);
xmlFreeDoc(xslt_doc);
xmlFreeDoc(doc);
return NULL;
}
svg_doc = xsltApplyStylesheet(xslt_proc, doc, NULL);
g_free(stylesheet_path);
xsltFreeStylesheet(xslt_proc);
xmlFreeDoc(doc);
// Now, svg_doc contains the generated SVG file
xmlDocDumpFormatMemoryEnc(svg_doc, (xmlChar **)&save_content, &save_length, "UTF-8", 1);
xmlFreeDoc(svg_doc);
return save_content;
} }

View File

@ -42,7 +42,7 @@ void ag_chart_set_country(AgChart *chart, const gchar *country);
gchar *ag_chart_get_country(AgChart *chart); gchar *ag_chart_get_country(AgChart *chart);
void ag_chart_set_city(AgChart *chart, const gchar *city); void ag_chart_set_city(AgChart *chart, const gchar *city);
gchar *ag_chart_get_city(AgChart *chart); gchar *ag_chart_get_city(AgChart *chart);
void ag_chart_create_svg(AgChart *chart); gchar *ag_chart_create_svg(AgChart *chart, GError **err);
#define AG_CHART_ERROR (ag_chart_error_quark()) #define AG_CHART_ERROR (ag_chart_error_quark())
GQuark ag_chart_error_quark(void); GQuark ag_chart_error_quark(void);

View File

@ -108,7 +108,16 @@ save_as_cb(GSimpleAction *action, GVariant *parameter, gpointer user_data)
void void
ag_window_redraw_chart(AgWindow *window) ag_window_redraw_chart(AgWindow *window)
{ {
ag_chart_create_svg(window->priv->chart); GError *err = NULL;
gchar *svg_content;
svg_content = ag_chart_create_svg(window->priv->chart, &err);
if (svg_content == NULL) {
g_warning("%s", err->message);
} else {
g_free(svg_content);
}
} }
void void