svgtiny_code svgtiny_parse_svg(svgInfo &info,Poco::XML::Element *svg,
struct svgtiny_parse_state state, ofPtr<svgNode> currnode){
float x, y, width, height;
Poco::XML::Attr *view_box;
Poco::XML::Element *child;
svgtiny_parse_position_attributes(svg, state, &x, &y, &width, &height);
svgtiny_parse_paint_attributes(svg, &state);
svgtiny_parse_font_attributes(svg, &state);
view_box = svg->getAttributeNode("viewBox");
if (view_box) {
//const char *s = (const char *) view_box->children->content;
const char *s = (const char *) view_box->getValue().c_str();
float min_x, min_y, vwidth, vheight;
if (sscanf(s, "%f,%f,%f,%f",
&min_x, &min_y, &vwidth, &vheight) == 4 ||
sscanf(s, "%f %f %f %f",
&min_x, &min_y, &vwidth, &vheight) == 4) {
state.ctm.a = (float) state.viewport_width / vwidth;
state.ctm.d = (float) state.viewport_height / vheight;
state.ctm.e += -min_x * state.ctm.a;
state.ctm.f += -min_y * state.ctm.d;
}
}
svgtiny_parse_transform_attributes(svg, &state);
// this is how this should work, but it doesn't
//Poco::XML::NodeIterator it(svg, Poco::XML::NodeFilter::SHOW_ELEMENT | Poco::XML::NodeFilter::SHOW_TEXT);
//Poco::XML::Node* pNode = it.nextNode();
//while (pNode)
// Note: this should be using the NodeIterator, but it doesn't seem to work as advertised when using
// a Node as the root for the iterator constructor. Really weird.
Poco::XML::ChildNodesList *cnl = ( Poco::XML::ChildNodesList *) svg->childNodes();
svgtiny_code code = processChildren(info,currnode,cnl,state);
if (code != svgtiny_OK){
return code;
}
return svgtiny_OK;
}
svgtiny_code svgtiny_parse_text(xmlNode *text,
struct svgtiny_parse_state state)
{
float x, y, width, height;
float px, py;
xmlNode *child;
svgtiny_parse_position_attributes(text, state,
&x, &y, &width, &height);
svgtiny_parse_font_attributes(text, &state);
svgtiny_parse_transform_attributes(text, &state);
px = state.ctm.a * x + state.ctm.c * y + state.ctm.e;
py = state.ctm.b * x + state.ctm.d * y + state.ctm.f;
/* state.ctm.e = px - state.origin_x; */
/* state.ctm.f = py - state.origin_y; */
/*struct css_style style = state.style;
style.font_size.value.length.value *= state.ctm.a;*/
for (child = text->children; child; child = child->next) {
svgtiny_code code = svgtiny_OK;
if (child->type == XML_TEXT_NODE) {
struct svgtiny_shape *shape = svgtiny_add_shape(&state);
if (!shape)
return svgtiny_OUT_OF_MEMORY;
shape->text = strdup((const char *) child->content);
shape->text_x = px;
shape->text_y = py;
state.diagram->shape_count++;
} else if (child->type == XML_ELEMENT_NODE &&
strcmp((const char *) child->name,
"tspan") == 0) {
code = svgtiny_parse_text(child, state);
}
if (!code != svgtiny_OK)
return code;
}
return svgtiny_OK;
}
svgtiny_code svgtiny_parse_svg(dom_element *svg,
struct svgtiny_parse_state state)
{
float x, y, width, height;
dom_string *view_box;
dom_element *child;
dom_exception exc;
svgtiny_setup_state_local(&state);
svgtiny_parse_position_attributes(svg, state, &x, &y, &width, &height);
svgtiny_parse_paint_attributes(svg, &state);
svgtiny_parse_font_attributes(svg, &state);
exc = dom_element_get_attribute(svg, state.interned_viewBox,
&view_box);
if (exc != DOM_NO_ERR) {
svgtiny_cleanup_state_local(&state);
return svgtiny_LIBDOM_ERROR;
}
if (view_box) {
char *s = strndup(dom_string_data(view_box),
dom_string_byte_length(view_box));
float min_x, min_y, vwidth, vheight;
if (sscanf(s, "%f,%f,%f,%f",
&min_x, &min_y, &vwidth, &vheight) == 4 ||
sscanf(s, "%f %f %f %f",
&min_x, &min_y, &vwidth, &vheight) == 4) {
state.ctm.a = (float) state.viewport_width / vwidth;
state.ctm.d = (float) state.viewport_height / vheight;
state.ctm.e += -min_x * state.ctm.a;
state.ctm.f += -min_y * state.ctm.d;
}
free(s);
dom_string_unref(view_box);
}
svgtiny_parse_transform_attributes(svg, &state);
exc = dom_node_get_first_child(svg, (dom_node **) (void *) &child);
if (exc != DOM_NO_ERR) {
svgtiny_cleanup_state_local(&state);
return svgtiny_LIBDOM_ERROR;
}
while (child != NULL) {
dom_element *next;
dom_node_type nodetype;
svgtiny_code code = svgtiny_OK;
exc = dom_node_get_node_type(child, &nodetype);
if (exc != DOM_NO_ERR) {
dom_node_unref(child);
return svgtiny_LIBDOM_ERROR;
}
if (nodetype == DOM_ELEMENT_NODE) {
dom_string *nodename;
exc = dom_node_get_node_name(child, &nodename);
if (exc != DOM_NO_ERR) {
dom_node_unref(child);
svgtiny_cleanup_state_local(&state);
return svgtiny_LIBDOM_ERROR;
}
if (dom_string_caseless_isequal(state.interned_svg,
nodename))
code = svgtiny_parse_svg(child, state);
else if (dom_string_caseless_isequal(state.interned_g,
nodename))
code = svgtiny_parse_svg(child, state);
else if (dom_string_caseless_isequal(state.interned_a,
nodename))
code = svgtiny_parse_svg(child, state);
else if (dom_string_caseless_isequal(state.interned_path,
nodename))
code = svgtiny_parse_path(child, state);
else if (dom_string_caseless_isequal(state.interned_rect,
nodename))
code = svgtiny_parse_rect(child, state);
else if (dom_string_caseless_isequal(state.interned_circle,
nodename))
code = svgtiny_parse_circle(child, state);
else if (dom_string_caseless_isequal(state.interned_ellipse,
nodename))
code = svgtiny_parse_ellipse(child, state);
else if (dom_string_caseless_isequal(state.interned_line,
nodename))
code = svgtiny_parse_line(child, state);
else if (dom_string_caseless_isequal(state.interned_polyline,
nodename))
code = svgtiny_parse_poly(child, state, false);
else if (dom_string_caseless_isequal(state.interned_polygon,
nodename))
code = svgtiny_parse_poly(child, state, true);
else if (dom_string_caseless_isequal(state.interned_text,
nodename))
code = svgtiny_parse_text(child, state);
dom_string_unref(nodename);
}
if (code != svgtiny_OK) {
dom_node_unref(child);
svgtiny_cleanup_state_local(&state);
return code;
}
exc = dom_node_get_next_sibling(child,
(dom_node **) (void *) &next);
dom_node_unref(child);
if (exc != DOM_NO_ERR) {
svgtiny_cleanup_state_local(&state);
return svgtiny_LIBDOM_ERROR;
}
child = next;
}
svgtiny_cleanup_state_local(&state);
return svgtiny_OK;
}
svgtiny_code svgtiny_parse_text(dom_element *text,
struct svgtiny_parse_state state)
{
float x, y, width, height;
float px, py;
dom_node *child;
dom_exception exc;
svgtiny_setup_state_local(&state);
svgtiny_parse_position_attributes(text, state,
&x, &y, &width, &height);
svgtiny_parse_font_attributes(text, &state);
svgtiny_parse_transform_attributes(text, &state);
px = state.ctm.a * x + state.ctm.c * y + state.ctm.e;
py = state.ctm.b * x + state.ctm.d * y + state.ctm.f;
/* state.ctm.e = px - state.origin_x; */
/* state.ctm.f = py - state.origin_y; */
/*struct css_style style = state.style;
style.font_size.value.length.value *= state.ctm.a;*/
exc = dom_node_get_first_child(text, &child);
if (exc != DOM_NO_ERR) {
return svgtiny_LIBDOM_ERROR;
svgtiny_cleanup_state_local(&state);
}
while (child != NULL) {
dom_node *next;
dom_node_type nodetype;
svgtiny_code code = svgtiny_OK;
exc = dom_node_get_node_type(child, &nodetype);
if (exc != DOM_NO_ERR) {
dom_node_unref(child);
svgtiny_cleanup_state_local(&state);
return svgtiny_LIBDOM_ERROR;
}
if (nodetype == DOM_ELEMENT_NODE) {
dom_string *nodename;
exc = dom_node_get_node_name(child, &nodename);
if (exc != DOM_NO_ERR) {
dom_node_unref(child);
svgtiny_cleanup_state_local(&state);
return svgtiny_LIBDOM_ERROR;
}
if (dom_string_caseless_isequal(nodename,
state.interned_tspan))
code = svgtiny_parse_text((dom_element *)child,
state);
dom_string_unref(nodename);
} else if (nodetype == DOM_TEXT_NODE) {
struct svgtiny_shape *shape = svgtiny_add_shape(&state);
dom_string *content;
if (shape == NULL) {
dom_node_unref(child);
svgtiny_cleanup_state_local(&state);
return svgtiny_OUT_OF_MEMORY;
}
exc = dom_text_get_whole_text(child, &content);
if (exc != DOM_NO_ERR) {
dom_node_unref(child);
svgtiny_cleanup_state_local(&state);
return svgtiny_LIBDOM_ERROR;
}
if (content != NULL) {
shape->text = strndup(dom_string_data(content),
dom_string_byte_length(content));
dom_string_unref(content);
} else {
shape->text = strdup("");
}
shape->text_x = px;
shape->text_y = py;
state.diagram->shape_count++;
}
if (code != svgtiny_OK) {
dom_node_unref(child);
svgtiny_cleanup_state_local(&state);
return code;
}
exc = dom_node_get_next_sibling(child, &next);
dom_node_unref(child);
if (exc != DOM_NO_ERR) {
svgtiny_cleanup_state_local(&state);
return svgtiny_LIBDOM_ERROR;
}
child = next;
}
svgtiny_cleanup_state_local(&state);
return svgtiny_OK;
}
svgtiny_code svgtiny_parse_svg(xmlNode *svg,
struct svgtiny_parse_state state)
{
float x, y, width, height;
xmlAttr *view_box;
xmlNode *child;
svgtiny_parse_position_attributes(svg, state, &x, &y, &width, &height);
svgtiny_parse_paint_attributes(svg, &state);
svgtiny_parse_font_attributes(svg, &state);
/* parse viewBox */
view_box = xmlHasProp(svg, (const xmlChar *) "viewBox");
if (view_box) {
const char *s = (const char *) view_box->children->content;
float min_x, min_y, vwidth, vheight;
if (sscanf(s, "%f,%f,%f,%f",
&min_x, &min_y, &vwidth, &vheight) == 4 ||
sscanf(s, "%f %f %f %f",
&min_x, &min_y, &vwidth, &vheight) == 4) {
state.ctm.a = (float) state.viewport_width / vwidth;
state.ctm.d = (float) state.viewport_height / vheight;
state.ctm.e += -min_x * state.ctm.a;
state.ctm.f += -min_y * state.ctm.d;
}
}
svgtiny_parse_transform_attributes(svg, &state);
for (child = svg->children; child; child = child->next) {
svgtiny_code code = svgtiny_OK;
if (child->type == XML_ELEMENT_NODE) {
const char *name = (const char *) child->name;
if (strcmp(name, "svg") == 0)
code = svgtiny_parse_svg(child, state);
else if (strcmp(name, "g") == 0)
code = svgtiny_parse_svg(child, state);
else if (strcmp(name, "a") == 0)
code = svgtiny_parse_svg(child, state);
else if (strcmp(name, "path") == 0)
code = svgtiny_parse_path(child, state);
else if (strcmp(name, "rect") == 0)
code = svgtiny_parse_rect(child, state);
else if (strcmp(name, "circle") == 0)
code = svgtiny_parse_circle(child, state);
else if (strcmp(name, "ellipse") == 0)
code = svgtiny_parse_ellipse(child, state);
else if (strcmp(name, "line") == 0)
code = svgtiny_parse_line(child, state);
else if (strcmp(name, "polyline") == 0)
code = svgtiny_parse_poly(child, state, false);
else if (strcmp(name, "polygon") == 0)
code = svgtiny_parse_poly(child, state, true);
else if (strcmp(name, "text") == 0)
code = svgtiny_parse_text(child, state);
}
if (code != svgtiny_OK)
return code;
}
return svgtiny_OK;
}
svgtiny_code svgtiny_parse_text(Poco::XML::Element *text,
struct svgtiny_parse_state state)
{
float x, y, width, height;
float px, py;
Poco::XML::Element *child;
svgtiny_parse_position_attributes(text, state,
&x, &y, &width, &height);
svgtiny_parse_font_attributes(text, &state);
svgtiny_parse_transform_attributes(text, &state);
px = state.ctm.a * x + state.ctm.c * y + state.ctm.e;
py = state.ctm.b * x + state.ctm.d * y + state.ctm.f;
/* state.ctm.e = px - state.origin_x; */
/* state.ctm.f = py - state.origin_y; */
/*struct css_style style = state.style;
style.font_size.value.length.value *= state.ctm.a;*/
//for (child = text->children; child; child = child->next) {
//for( child = (Poco::XML::Element*) text->FirstChild( false ); child; child = (Poco::XML::Element*) child->NextSibling( false ) ) {
Poco::XML::NodeIterator it(text, Poco::XML::NodeFilter::SHOW_ELEMENT | Poco::XML::NodeFilter::SHOW_TEXT);
Poco::XML::Node* pNode = it.nextNode();
while (pNode) {
svgtiny_code code = svgtiny_OK;
if (pNode->getNodeValue().compare("text") == 0)
{
struct svgtiny_shape *shape = svgtiny_add_shape(&state);
if (!shape)
return svgtiny_OUT_OF_MEMORY;
//shape->text = strdup((const char *) child->content);
shape->text = strdup((const char *) pNode->getNodeValue().c_str());
shape->text_x = px;
shape->text_y = py;
state.diagram->shape_count++;
}
//else if (strcmp((const char *) child->Value(), "tspan") == 0)
else if (pNode->getNodeValue().compare("tspan") == 0)
{
code = svgtiny_parse_text(child, state);
}
pNode = it.nextNode();
if (!code != svgtiny_OK)
return code;
}
return svgtiny_OK;
}
