ExportResult sp_export_png_file(SPDocument *doc, gchar const *filename,
double x0, double y0, double x1, double y1,
unsigned long int width, unsigned long int height, double xdpi, double ydpi,
unsigned long bgcolor,
unsigned int (*status) (float, void *),
void *data, bool force_overwrite,
GSList *items_only)
{
return sp_export_png_file(doc, filename, Geom::Rect(Geom::Point(x0,y0),Geom::Point(x1,y1)),
width, height, xdpi, ydpi, bgcolor, status, data, force_overwrite, items_only);
}
static void
draw_page (GtkPrintOperation */*operation*/,
GtkPrintContext *context,
gint /*page_nr*/,
gpointer user_data)
{
struct workaround_gtkmm *junk = (struct workaround_gtkmm*)user_data;
//printf("%s %d\n",__FUNCTION__, page_nr);
if (junk->_tab->as_bitmap()) {
// Render as exported PNG
gdouble width = sp_document_width(junk->_doc);
gdouble height = sp_document_height(junk->_doc);
gdouble dpi = junk->_tab->bitmap_dpi();
std::string tmp_png;
std::string tmp_base = "inkscape-print-png-XXXXXX";
int tmp_fd;
if ( (tmp_fd = Inkscape::IO::file_open_tmp (tmp_png, tmp_base)) >= 0) {
close(tmp_fd);
guint32 bgcolor = 0x00000000;
Inkscape::XML::Node *nv = sp_repr_lookup_name (junk->_doc->rroot, "sodipodi:namedview");
if (nv && nv->attribute("pagecolor"))
bgcolor = sp_svg_read_color(nv->attribute("pagecolor"), 0xffffff00);
if (nv && nv->attribute("inkscape:pageopacity"))
bgcolor |= SP_COLOR_F_TO_U(sp_repr_get_double_attribute (nv, "inkscape:pageopacity", 1.0));
sp_export_png_file(junk->_doc, tmp_png.c_str(), 0.0, 0.0,
width, height,
(unsigned long)(width * dpi / PX_PER_IN),
(unsigned long)(height * dpi / PX_PER_IN),
dpi, dpi, bgcolor, NULL, NULL, true, NULL);
// 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);
cairo_matrix_t m;
cairo_get_matrix(cr, &m);
cairo_scale(cr, PT_PER_IN / dpi, PT_PER_IN / dpi);
// FIXME: why is the origin offset??
cairo_set_source_surface(cr, png->cobj(), -16.0, -16.0);
cairo_paint(cr);
cairo_set_matrix(cr, &m);
}
// Clean up
unlink (tmp_png.c_str());
}
else {
g_warning(_("Could not open temporary PNG for bitmap printing"));
}
}
else {
// Render as vectors
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);
cairo_surface_t *surface = cairo_get_target(cr);
/**
Call cairo_win32_printing_surface directly as a workaround until GTK uses this call.
When GTK uses cairo_win32_printing_surface this automatically reverts.
*/
#ifdef WIN32
if (cairo_surface_get_type (surface) == CAIRO_SURFACE_TYPE_WIN32) {
HDC dc = cairo_win32_surface_get_dc (surface);
surface = _cairo_win32_printing_surface_create (dc);
}
#endif
bool ret = ctx->setSurfaceTarget (surface, true); if (ret) {
ret = renderer.setupDocument (ctx, junk->_doc, TRUE, NULL);
if (ret) {
renderer.renderItem(ctx, junk->_base);
ret = ctx->finish();
}
else {
g_warning(_("Could not set up Document"));
}
}
else {
g_warning(_("Failed to set CairoRenderContext"));
}
// Clean up
renderer.destroyContext(ctx);
}
}
