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// SPDX-License-Identifier: GPL-2.0-or-later
/**
* @file
* Print dialog.
*/
/* Authors:
* Kees Cook <kees@outflux.net>
* Abhishek Sharma
* Patrick McDermott
*
* Copyright (C) 2007 Kees Cook
* Copyright (C) 2017 Patrick McDermott
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include <cmath>
#include <gtkmm.h>
#include "inkscape.h"
#include "preferences.h"
#include "print.h"
#include "extension/internal/cairo-render-context.h"
#include "extension/internal/cairo-renderer.h"
#include "document.h"
#include "util/units.h"
#include "helper/png-write.h"
#include "svg/svg-color.h"
#include <glibmm/i18n.h>
namespace Inkscape {
namespace UI {
namespace Dialog {
Print::Print(SPDocument *doc, SPItem *base) :
_doc (doc),
_base (base)
{
g_assert (_doc);
g_assert (_base);
_printop = Gtk::PrintOperation::create();
// set up dialog title, based on document name
const Glib::ustring jobname = _doc->getName() ? _doc->getName() : _("SVG Document");
Glib::ustring title = _("Print");
title += " ";
title += jobname;
_printop->set_job_name(title);
_printop->set_unit(Gtk::UNIT_POINTS);
Glib::RefPtr<Gtk::PageSetup> page_setup = Gtk::PageSetup::create();
// get document width, height, and orientation
// height must be larger than width, as in GTK+'s known paper sizes
gdouble doc_width;
gdouble doc_height;
if (_doc->getWidth().value("pt") > _doc->getHeight().value("pt")) {
page_setup->set_orientation(Gtk::PAGE_ORIENTATION_LANDSCAPE);
doc_width = _doc->getHeight().value("pt");
doc_height = _doc->getWidth().value("pt");
} else {
page_setup->set_orientation(Gtk::PAGE_ORIENTATION_PORTRAIT);
doc_width = _doc->getWidth().value("pt");
doc_height = _doc->getHeight().value("pt");
}
// attempt to match document size against known paper sizes
Gtk::PaperSize paper_size("custom", "custom", doc_width, doc_height, Gtk::UNIT_POINTS);
std::vector<Gtk::PaperSize> known_sizes = Gtk::PaperSize::get_paper_sizes(false);
for (auto& size : known_sizes) {
if (fabs(size.get_width(Gtk::UNIT_POINTS) - doc_width) >= 1.0) {
// width (short edge) doesn't match
continue;
}
if (fabs(size.get_height(Gtk::UNIT_POINTS) - doc_height) >= 1.0) {
// height (short edge) doesn't match
continue;
}
// size matches
paper_size = size;
break;
}
page_setup->set_paper_size(paper_size);
_printop->set_default_page_setup(page_setup);
_printop->set_use_full_page(true);
// set up signals
_workaround._doc = _doc;
_workaround._base = _base;
_workaround._tab = &_tab;
_printop->signal_create_custom_widget().connect(sigc::mem_fun(*this, &Print::create_custom_widget));
_printop->signal_begin_print().connect(sigc::mem_fun(*this, &Print::begin_print));
_printop->signal_draw_page().connect(sigc::mem_fun(*this, &Print::draw_page));
// build custom preferences tab
_printop->set_custom_tab_label(_("Rendering"));
}
void Print::draw_page(const Glib::RefPtr<Gtk::PrintContext>& context, int /*page_nr*/)
{
// TODO: If the user prints multiple copies we render the whole page for each copy
// It would be more efficient to render the page once (e.g. in "begin_print")
// and simply print this result as often as necessary
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
//printf("%s %d\n",__FUNCTION__, page_nr);
if (_workaround._tab->as_bitmap()) {
// Render as exported PNG
prefs->setBool("/dialogs/printing/asbitmap", true);
gdouble width = (_workaround._doc)->getWidth().value("px");
gdouble height = (_workaround._doc)->getHeight().value("px");
gdouble dpi = _workaround._tab->bitmap_dpi();
prefs->setDouble("/dialogs/printing/dpi", dpi);
std::string tmp_png;
std::string tmp_base = "inkscape-print-png-XXXXXX";
int tmp_fd;
if ( (tmp_fd = Glib::file_open_tmp(tmp_png, tmp_base)) >= 0) {
close(tmp_fd);
guint32 bgcolor = 0x00000000;
Inkscape::XML::Node *nv = sp_repr_lookup_name (_workaround._doc->rroot, "sodipodi:namedview");
if (nv && nv->attribute("pagecolor")){
bgcolor = sp_svg_read_color(nv->attribute("pagecolor"), 0xffffff00);
}
if (nv && nv->attribute("inkscape:pageopacity")){
double opacity = 1.0;
sp_repr_get_double (nv, "inkscape:pageopacity", &opacity);
bgcolor |= SP_COLOR_F_TO_U(opacity);
}
sp_export_png_file(_workaround._doc, tmp_png.c_str(), 0.0, 0.0,
width, height,
(unsigned long)(Inkscape::Util::Quantity::convert(width, "px", "in") * dpi),
(unsigned long)(Inkscape::Util::Quantity::convert(height, "px", "in") * dpi),
dpi, dpi, bgcolor, nullptr, nullptr, true, std::vector<SPItem*>());
// This doesn't seem to work:
//context->set_cairo_context ( Cairo::Context::create (Cairo::ImageSurface::create_from_png (tmp_png) ), dpi, dpi );
//
// so we'll use a surface pattern blat instead...
//
// but the C++ interface isn't implemented in cairomm:
//context->get_cairo_context ()->set_source_surface(Cairo::ImageSurface::create_from_png (tmp_png) );
//
// so do it in C:
{
Cairo::RefPtr<Cairo::ImageSurface> png = Cairo::ImageSurface::create_from_png (tmp_png);
cairo_t *cr = gtk_print_context_get_cairo_context (context->gobj());
cairo_matrix_t m;
cairo_get_matrix(cr, &m);
cairo_scale(cr, Inkscape::Util::Quantity::convert(1, "in", "pt") / dpi, Inkscape::Util::Quantity::convert(1, "in", "pt") / dpi);
// FIXME: why is the origin offset??
cairo_set_source_surface(cr, png->cobj(), 0, 0);
cairo_paint(cr);
cairo_set_matrix(cr, &m);
}
// Clean up
unlink (tmp_png.c_str());
}
else {
g_warning("%s", _("Could not open temporary PNG for bitmap printing"));
}
}
else {
// Render as vectors
prefs->setBool("/dialogs/printing/asbitmap", false);
Inkscape::Extension::Internal::CairoRenderer renderer;
Inkscape::Extension::Internal::CairoRenderContext *ctx = renderer.createContext();
// ctx->setPSLevel(CAIRO_PS_LEVEL_3);
ctx->setTextToPath(false);
ctx->setFilterToBitmap(true);
ctx->setBitmapResolution(72);
cairo_t *cr = gtk_print_context_get_cairo_context (context->gobj());
cairo_surface_t *surface = cairo_get_target(cr);
cairo_matrix_t ctm;
cairo_get_matrix(cr, &ctm);
bool ret = ctx->setSurfaceTarget (surface, true, &ctm);
if (ret) {
ret = renderer.setupDocument (ctx, _workaround._doc, TRUE, 0., nullptr);
if (ret) {
renderer.renderItem(ctx, _workaround._base);
ctx->finish(false); // do not finish the cairo_surface_t - it's owned by our GtkPrintContext!
}
else {
g_warning("%s", _("Could not set up Document"));
}
}
else {
g_warning("%s", _("Failed to set CairoRenderContext"));
}
// Clean up
renderer.destroyContext(ctx);
}
}
Gtk::Widget *Print::create_custom_widget()
{
//printf("%s\n",__FUNCTION__);
return &_tab;
}
void Print::begin_print(const Glib::RefPtr<Gtk::PrintContext>&)
{
//printf("%s\n",__FUNCTION__);
_printop->set_n_pages(1);
}
Gtk::PrintOperationResult Print::run(Gtk::PrintOperationAction, Gtk::Window &parent_window)
{
// Remember to restore the previous print settings
_printop->set_print_settings(SP_ACTIVE_DESKTOP->printer_settings._gtk_print_settings);
_printop->run(Gtk::PRINT_OPERATION_ACTION_PRINT_DIALOG, parent_window);
SP_ACTIVE_DESKTOP->printer_settings._gtk_print_settings = _printop->get_print_settings();
return Gtk::PRINT_OPERATION_RESULT_APPLY;
}
} // namespace Dialog
} // namespace UI
} // namespace Inkscape
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
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