/** Expose event handler.
* @param event event info structure.
* @return signal return value
*/
bool
SkillGuiGraphDrawingArea::on_expose_event(GdkEventExpose* event)
{
update_translations();
// This is where we draw on the window
Glib::RefPtr<Gdk::Window> window = get_window();
if(window) {
//Gtk::Allocation allocation = get_allocation();
//const int width = allocation.get_width();
//const int height = allocation.get_height();
// coordinates for the center of the window
//int xc, yc;
//xc = width / 2;
//yc = height / 2;
__cairo = window->create_cairo_context();
__cairo->set_source_rgb(1, 1, 1);
__cairo->paint();
if (__graph) {
Glib::Timer t;
gvRender(__gvc, __graph, (char *)"skillguicairo", NULL);
t.stop();
//printf("Rendering took %f seconds\n", t.elapsed());
}
__cairo.clear();
}
return true;
}
// render to string result, using binding-dependent gv_string_writer()
void renderresult(Agraph_t *g, const char *format, char *outdata)
{
int err;
if (!g)
return;
gv_string_writer_init(gvc);
err = gvRender(gvc, g, format, (FILE*)outdata);
}
// render to an open FILE
bool render(Agraph_t *g, const char *format, FILE *f)
{
int err;
if (!g)
return false;
err = gvRender(gvc, g, format, f);
return (! err);
}
// render to an open channel
bool renderchannel(Agraph_t *g, const char *format, const char *channelname)
{
int err;
if (!g)
return false;
gv_channel_writer_init(gvc);
err = gvRender(gvc, g, format, (FILE*)channelname);
return (! err);
}
static void json_begin_graph(GVJ_t *job)
{
if (job->render.id == FORMAT_JSON) {
GVC_t* gvc = gvCloneGVC (job->gvc);
graph_t *g = job->obj->u.g;
gvRender (gvc, g, "xdot", NULL);
gvFreeCloneGVC (gvc);
}
else if (job->render.id == FORMAT_JSON0) {
attach_attrs(job->gvc->g);
}
}
int main(int argc, char **argv)
{
Agraph_t *g;
Agnode_t *n, *m;
Agedge_t *e;
Agsym_t *a;
#ifdef NO_LAYOUT_OR_RENDERING
aginit();
#else
/* set up a graphviz context - but only once even for multiple graphs */
static GVC_t *gvc;
if (!gvc)
gvc = gvContext();
#endif
/* Create a simple digraph */
g = agopen("g", AGDIGRAPH);
n = agnode(g, "n");
m = agnode(g, "m");
e = agedge(g, n, m);
/* Set an attribute - in this case one that affects the visible rendering */
agsafeset(n, "color", "red", "");
#ifdef NO_LAYOUT_OR_RENDERING
/* Just write the graph without layout */
agwrite(g, stdout);
#else
/* Use the directed graph layout engine */
gvLayout(gvc, g, "dot");
/* Output in .dot format */
gvRender(gvc, g, "dot", stdout);
gvFreeLayout(gvc, g);
#endif
agclose(g);
return 0;
}
/**
* Render a tree to tree graph image via graphviz (dot)
*/
int r3_tree_render_dot(node * tree)
{
Agraph_t *g;
/* set up a graphviz context - but only once even for multiple graphs */
static GVC_t *gvc;
if (!gvc) {
gvc = gvContext();
}
/* Create a simple digraph */
g = agopen("g", Agdirected, 0);
// create self node
Agnode_t *ag_root = agnode(g, "{root}", 1);
r3_tree_build_ag_nodes(g, ag_root, tree, 0);
gvLayout(gvc, g, "dot");
gvRender(gvc, g, "dot", stdout);
gvFreeLayout(gvc, g);
agclose(g);
return 0;
}
int main (int argc, char* argv[])
{
graph_t *g;
graph_t *sg;
FILE *fp;
graph_t** cc;
int i, ncc;
GVC_t *gvc;
gvc = gvContext();
if (argc > 1)
fp = fopen(argv[1], "r");
else
fp = stdin;
g = agread(fp, 0);
cc = ccomps(g, &ncc, (char*)0);
for (i = 0; i < ncc; i++) {
sg = cc[i];
nodeInduce (sg);
gvLayout(gvc, sg, "neato");
}
pack_graph (ncc, cc, g, 0);
gvRender(gvc, g, "ps", stdout);
for (i = 0; i < ncc; i++) {
sg = cc[i];
gvFreeLayout(gvc, sg);
agdelete(g, sg);
}
agclose(g);
return (gvFreeContext(gvc));
}
void QGVScene::render (const QString &algorithm) {
gvRender(_context->context(), _graph->graph(),
algorithm.toLocal8Bit().data(), NULL);
}
/** save current graph. */
void
SkillGuiGraphDrawingArea::save()
{
Gtk::Window *w = dynamic_cast<Gtk::Window *>(get_toplevel());
__fcd_save->set_transient_for(*w);
int result = __fcd_save->run();
if (result == Gtk::RESPONSE_OK) {
Gtk::FileFilter *f = __fcd_save->get_filter();
std::string filename = __fcd_save->get_filename();
if (filename != "") {
if (f == __filter_dot) {
save_dotfile(filename.c_str());
} else {
Cairo::RefPtr<Cairo::Surface> surface;
bool write_to_png = false;
if (f == __filter_pdf) {
surface = Cairo::PdfSurface::create(filename, __bbw, __bbh);
} else if (f == __filter_svg) {
surface = Cairo::SvgSurface::create(filename, __bbw, __bbh);
} else if (f == __filter_png) {
surface = Cairo::ImageSurface::create(Cairo::FORMAT_ARGB32,
(int)ceilf(__bbw),
(int)ceilf(__bbh));
write_to_png = true;
}
if (surface) {
__cairo = Cairo::Context::create(surface);
bool old_scale_override = __scale_override;
double old_tx = __translation_x;
double old_ty = __translation_y;
double old_scale = __scale;
__translation_x = __pad_x;
__translation_y = __bbh - __pad_y;
__scale = 1.0;
__scale_override = true;
if (__graph) {
gvRender(__gvc, __graph, (char *)"skillguicairo", NULL);
}
if (write_to_png) {
surface->write_to_png(filename);
}
__cairo.clear();
__translation_x = old_tx;
__translation_y = old_ty;
__scale = old_scale;
__scale_override = old_scale_override;
}
}
} else {
Gtk::MessageDialog md(*w, "Invalid filename",
/* markup */ false, Gtk::MESSAGE_ERROR,
Gtk::BUTTONS_OK, /* modal */ true);
md.set_title("Invalid File Name");
md.run();
}
}
__fcd_save->hide();
}
int render_graph(rendering_ctx_t *rctx,
const char* filename,
const char* format)
{
Agraph_t *g;
Agnode_t *n;
Agnode_t *d;
Agedge_t *e;
GVC_t *gvc;
rnsGraph_t *rnsGraph;
char w[32];
FILE *fp;
fp = fopen(filename, "w+");
gvc = gvContext();
rnsGraph = rctx->graph;
if (rctx->directed){
g = agopen("g", Agstrictdirected, 0);
}else{
g = agopen("g", Agstrictundirected, 0);
}
size_t i, j;
for (i=0; i<rnsGraph->size; i++){
if ( !rnsGraph->repos[i]) {
continue;
}
n = agnode(g, rnsGraph->repos[i]->id, 1);
for (j=0; j<rnsGraph->repos[i]->maxLinks; j++){
if (!rnsGraph->repos[i]->links[j]){
continue;
}
d = agnode(g, rnsGraph->repos[i]->links[j]->repo->id, 1);
e = agedge(g, n, d, 0, 1);
snprintf(w, sizeof(w), "%1.3g", (double) cost(rnsGraph->repos[i],
rnsGraph->repos[i]->links[j]));
agsafeset(e, "label", w, "");
if (rnsGraph->repos[i]->links[j]->is_path){
agsafeset(e, "color", "red", "");
}
}
}
// char *args[] = {
// "sfdp",
// "-x",
// "-Tpng",
// "-Goverlap=scale",
// "-GK=5.0",
// "-ooutput/random.png"
// };
// gvParseArgs (gvc, sizeof(args)/sizeof(char*), args);
// gvLayoutJobs(gvc, g);
// gvRenderJobs(gvc, g);
gvLayout(gvc, g, "dot");
gvRender(gvc, g, format, fp);
gvFreeLayout(gvc, g);
agclose(g);
fclose(fp);
return (gvFreeContext(gvc));
}
// render to a FILE
void render(Agraph_t *g, char *format, FILE *f)
{
int err;
err = gvRender(gvc, g, format, f);
}
// render to stdout
void render(Agraph_t *g, char *format)
{
int err;
err = gvRender(gvc, g, format, stdout);
}