void renderLabels(const char* path)
{
BOOST_TEST_MESSAGE("Render: " << path);
Cairo::RefPtr<Cairo::Surface> surface = Cairo::ImageSurface::create(Cairo::FORMAT_ARGB32,
META_TILE_SIZE * TILE_SIZE, META_TILE_SIZE * TILE_SIZE);
Cairo::RefPtr<Cairo::Context> cr = Cairo::Context::create(surface);
cr->set_source_rgba(0.0, 0.0, 0.0, 1.0);
cr->save();
cr->set_source_rgba(1.0, 1.0, 1.0, 1.0);
cr->paint();
cr->restore();
std::vector<std::pair<string, FloatPoint>> toPlace;
toPlace.push_back(std::pair<string, FloatPoint>("Karlsruhe", FloatPoint(40, 200)));
toPlace.push_back(std::pair<string, FloatPoint>("Mannheim", FloatPoint(400, 200)));
toPlace.push_back(std::pair<string, FloatPoint>("Stuttgard", FloatPoint(200, 260)));
toPlace.push_back(std::pair<string, FloatPoint>("München", FloatPoint(380, 660)));
toPlace.push_back(std::pair<string, FloatPoint>("Pforzheim", FloatPoint(200, 600)));
toPlace.push_back(std::pair<string, FloatPoint>("Wien", FloatPoint(240, 680)));
toPlace.push_back(std::pair<string, FloatPoint>("Paris", FloatPoint(40, 880)));
toPlace.push_back(std::pair<string, FloatPoint>("Rom", FloatPoint(-40, 880)));
toPlace.push_back(std::pair<string, FloatPoint>("Nothing", FloatPoint(400, 760)));
toPlace.push_back(std::pair<string, FloatPoint>("To See", FloatPoint(720, 880)));
toPlace.push_back(std::pair<string, FloatPoint>("Here", FloatPoint(720, 560)));
toPlace.push_back(std::pair<string, FloatPoint>("Bielefeld", FloatPoint(420, 840)));
renderer->renderLabels(cr, toPlace);
BOOST_TEST_MESSAGE("Writing.");
surface->flush();
surface->write_to_png(path);
}
void make_image(Glib::ustring filename, void (shape_function)( Papyrus::Canvas::pointer ) ) {
Cairo::RefPtr<Cairo::ImageSurface> surface =
Cairo::ImageSurface::create(Cairo::FORMAT_ARGB32, 200, 200);
Cairo::RefPtr<Cairo::Context> cr = Cairo::Context::create(surface);
Papyrus::Canvas::pointer canvas = Papyrus::Canvas::create();
canvas->translate( 100, 100 );
// canvas->set_background( Cairo::SolidPattern::create_rgb(0.9, 0.9, 0.9) );
Papyrus::Polyline::pointer line = Papyrus::Polyline::create();
line->add_vertex(0, -100);
line->add_vertex(0, 100);
line->set_stroke( Cairo::SolidPattern::create_rgb(0.0, 0.0, 1.0) );
line->stroke()->set_width(2);
canvas->add( line );
line = Papyrus::Polyline::create();
line->add_vertex(-100, 0);
line->add_vertex(100, 0);
line->set_stroke( Cairo::SolidPattern::create_rgb(0.0, 0.0, 1.0) );
line->stroke()->set_width(2);
canvas->add( line );
shape_function( canvas );
canvas->render( cr );
surface->write_to_png(filename);
std::cout << "Wrote png file \"" << filename << "\"" << std::endl;
}
int main(int, char**) {
Cairo::RefPtr<Cairo::ImageSurface> surface = Cairo::ImageSurface::create(
Cairo::FORMAT_ARGB32, WIDTH, HEIGHT);
Cairo::RefPtr<Cairo::Context> cr = Cairo::Context::create(surface);
// fill background in white
cr->set_source_rgb(1.0, 1.0, 1.0);
cr->paint();
// draw a little dot at the point where text will be drawn
cr->arc(TEXT_ORIGIN_X, TEXT_ORIGIN_Y, FONT_SIZE / 4.0, 0, 2 * M_PI);
cr->set_source_rgba(0.0, 1.0, 0.0, 0.5);
cr->fill();
// draw the text
cr->move_to(TEXT_ORIGIN_X, TEXT_ORIGIN_Y);
cr->set_source_rgb(0.8, 0.2, 0.2);
Cairo::RefPtr<Cairo::ToyFontFace> font = Cairo::ToyFontFace::create(
"Bitstream Charter", Cairo::FONT_SLANT_ITALIC,
Cairo::FONT_WEIGHT_BOLD);
cr->set_font_face(font);
cr->set_font_size(FONT_SIZE);
cr->show_text("cairomm!");
surface->write_to_png("toy-text.png");
return 0;
}
void ImageWidget::SavePng(const std::string &filename)
{
unsigned width = get_width(), height = get_height();
Cairo::RefPtr<Cairo::ImageSurface> surface = Cairo::ImageSurface::create(Cairo::FORMAT_ARGB32, width, height);
Cairo::RefPtr<Cairo::Context> cairo = Cairo::Context::create(surface);
if(HasImage())
{
AOLogger::Debug << "Saving PNG of " << get_width() << " x " << get_height() << "\n";
update(cairo, width, height);
}
surface->write_to_png(filename);
}
int main (void)
{
Cairo::RefPtr<Cairo::ImageSurface> surface = Cairo::ImageSurface::create(Cairo::FORMAT_ARGB32, WIDTH, HEIGHT);
Cairo::RefPtr<Cairo::Context> cr = Cairo::Context::create(surface);
draw(cr, WIDTH, HEIGHT);
#ifdef CAIRO_HAS_PNG_FUNCTIONS
const char* filename = "text-rotate.png";
surface->write_to_png(filename);
std::cout << "Wrote file " << filename << std::endl;
#else
std::cout << "You must compile cairo with PNG support for this example to work" << std::endl;
#endif
}
int main()
{
Cairo::RefPtr<Cairo::ImageSurface> surface =
Cairo::ImageSurface::create(Cairo::FORMAT_ARGB32, 600, 400);
Cairo::RefPtr<Cairo::Context> cr = Cairo::Context::create(surface);
cr->save(); // save the state of the context
cr->set_source_rgb(0.86, 0.85, 0.47);
cr->paint(); // fill image with the color
cr->restore(); // color is back to black now
cr->save();
// draw a border around the image
cr->set_line_width(20.0); // make the line wider
cr->rectangle(0.0, 0.0, surface->get_width(), surface->get_height());
cr->stroke();
cr->set_source_rgba(0.0, 0.0, 0.0, 0.7);
// draw a circle in the center of the image
cr->arc(surface->get_width() / 2.0, surface->get_height() / 2.0,
surface->get_height() / 4.0, 0.0, 2.0 * M_PI);
cr->stroke();
// draw a diagonal line
cr->move_to(surface->get_width() / 4.0, surface->get_height() / 4.0);
cr->line_to(surface->get_width() * 3.0 / 4.0,
surface->get_height() * 3.0 / 4.0);
cr->stroke();
cr->restore();
#ifdef CAIRO_HAS_PNG_FUNCTIONS
std::string filename = "image.png";
surface->write_to_png(filename);
std::cout << "Wrote png file \"" << filename << "\"" << std::endl;
#else
std::cout
<< "You must compile cairo with PNG support for this example to work."
<< std::endl;
#endif
}
/** Post-process files. Only valid for PNGs. */
void postprocess()
{
printf("Post-processing PNG files, resizing to %fx%f\n", maxwidth, maxheight);
struct dirent *d;
DIR *output_dir = opendir(outdir.c_str());
while ((d = readdir(output_dir)) != NULL) {
if (fnmatch("*.png", d->d_name, FNM_PATHNAME | FNM_PERIOD) == 0) {
infile = outdir + "/" + d->d_name;
Cairo::RefPtr<Cairo::ImageSurface> imgs = Cairo::ImageSurface::create_from_png(infile);
if ( (imgs->get_height() != maxheight) || (imgs->get_width() != maxwidth)) {
// need to re-create
char *tmpout = strdup((outdir + "/tmpXXXXXX").c_str());
FILE *f = fdopen(mkstemp(tmpout), "w");
outfile = tmpout;
free(tmpout);
Cairo::RefPtr<Cairo::ImageSurface> outs = Cairo::ImageSurface::create(Cairo::FORMAT_ARGB32,
(int)ceilf(maxwidth),
(int)ceilf(maxheight));
double tx = (maxwidth - imgs->get_width()) / 2.0;
double ty = (maxheight - imgs->get_height()) / 2.0;
printf("Re-creating %s for post-processing, "
"resizing from %ix%i, tx=%f, ty=%f\n", infile.c_str(),
imgs->get_width(), imgs->get_height(), tx, ty);
Cairo::RefPtr<Cairo::Context> cc = Cairo::Context::create(outs);
if (white_bg) {
cc->set_source_rgb(1, 1, 1);
cc->paint();
}
cc->set_source(imgs, tx, ty);
cc->paint();
outs->write_to_png(&SkillGuiBatchRenderer::write_func, f);
imgs.clear();
cc.clear();
outs.clear();
fclose(f);
rename(outfile.c_str(), infile.c_str());
}
}
}
closedir(output_dir);
}
int main(int, char**) {
Cairo::RefPtr<Cairo::ImageSurface> surface = Cairo::ImageSurface::create(
Cairo::FORMAT_ARGB32, WIDTH, HEIGHT);
Cairo::RefPtr<Cairo::Context> cr = Cairo::Context::create(surface);
// fill background in white
cr->set_source_rgb(1.0, 1.0, 1.0);
cr->paint();
// draw a little dot at the point where text will be drawn
cr->arc(TEXT_ORIGIN_X, TEXT_ORIGIN_Y, FONT_SIZE / 4.0, 0, 2 * M_PI);
cr->set_source_rgba(0.0, 1.0, 0.0, 0.5);
cr->fill();
// draw the text
cr->move_to(TEXT_ORIGIN_X, TEXT_ORIGIN_Y);
cr->set_source_rgb(0.8, 0.2, 0.2);
Cairo::RefPtr<BoxFontFace> font = BoxFontFace::create();
cr->set_font_face(font);
cr->set_font_size(FONT_SIZE);
cr->show_text("cairomm!");
// Now show it with the toy text API to
// demonstrate how the glyphs match up
cr->move_to(TEXT_ORIGIN_X, TEXT_ORIGIN_Y);
cr->set_source_rgba(0.2, 0.2, 0.2, 0.3);
Cairo::RefPtr<Cairo::ToyFontFace> toy_font = Cairo::ToyFontFace::create(
"Bitstream Charter", Cairo::FONT_SLANT_NORMAL,
Cairo::FONT_WEIGHT_BOLD);
cr->set_font_face(toy_font);
cr->set_font_size(FONT_SIZE);
cr->show_text("cairomm!");
const char* filename = "user-font.png";
try {
surface->write_to_png(filename);
std::cout << "Wrote Image " << filename << std::endl;
return 0;
} catch (const std::exception& e) {
std::cout << "** Unable to write Image " << filename << std::endl;
return 1;
}
}
void MainWindow::save_file()
{
std::cout << "MainWindow::save_file()\n";
if(m_png)
{
//dane są w obrazie teraz można je zapisać
//więc dialog i te sprawy
std::string filename = run_open_file_dialog("Select file to save stegocontener", Gtk::FILE_CHOOSER_ACTION_SAVE);
std::string test_text = m_text.get_buffer()->get_text();
m_wavelet.hide_text(test_text);
if(filename != "")
{
std::cout << "Saving image\n";
Cairo::RefPtr<Cairo::ImageSurface> surface = m_wavelet.to_image().to_cairo_image_surface();
surface->write_to_png(filename);
}
}
}
/** 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_png(Graph* graph)
{
int i_side = (graph->side_length - 1) * SPACING + PADDING;
//Cairo ImageSurface. This one will be saved afterwards as a png file
Cairo::RefPtr<Cairo::ImageSurface> surface = Cairo::ImageSurface::create(Cairo::FORMAT_ARGB32, i_side + PADDING * 2, i_side + PADDING * 2);
//Cairo Context.
Cairo::RefPtr<Cairo::Context> cr = Cairo::Context::create(surface);
cr->save(); // save the state of the context
cr->set_source_rgb(1.0, 1.0, 1.0);
cr->paint(); // fill image with the color
cr->restore(); // color is back to black now
//Storing state to start drawing
cr->save();
//setting brush color to black
cr->set_source_rgb(0.0, 0.0, 0.0);
cr->set_line_width(1.0);
//drawing lines
for (int i = 0; i < graph->side_length; i++) {
for (int j = 0; j < graph->side_length; j++) {
//for a current node
Node* current = graph->matrix.at(i).at(j);
//find all friends
for (int k = 0; k < current->friends.size(); k++) {
pair<int, int> current_friend = *std::next(current->friends.begin(), k);
//Move brush to current node
cr->move_to(current->coors.first * SPACING + PADDING, current->coors.second * SPACING + PADDING);
//Draw a line to current friend
cr->line_to(current_friend.first * SPACING + PADDING, current_friend.second * SPACING + PADDING);
cr->stroke();
}
}
}
//setting brush color to red
cr->set_source_rgb(1.0, 0.0, 0.0);
//drawing vertices after lines are drawn
for (int i = 0; i < graph->side_length; i++) {
for (int j = 0; j < graph->side_length; j++) {
Node* current = graph->matrix.at(i).at(j);
cr->arc(current->coors.first * SPACING + PADDING, current->coors.second * SPACING + PADDING, 1.0, 0.0, 2.0 * M_PI);
cr->stroke();
}
}
cr->restore();
#ifdef CAIRO_HAS_PNG_FUNCTIONS
std::string filename = build_name("result");
surface->write_to_png(filename);
std::cout << "Wrote png file \"" << filename << "\"" << std::endl;
#else
std::cout << "You must compile cairo with PNG support for this example to work."
<< std::endl;
#endif
}
