allow --export-dpi to be used for setting the filter rasterization resolution in PS/EPS/PDF export

(bzr r7801)

2 files changed, 17 insertions, 3 deletions

diff --git a/inkscape.pod b/inkscape.pod
index afc364ec9..720a111b6 100644
--- a/inkscape.pod
+++ b/inkscape.pod
@@ -140,7 +140,9 @@ then the page color set in Inkscape in the Document Options dialog will be used
 =item B<-d> I<DPI>, B<--export-dpi>=I<DPI>
 
 The resolution used for PNG export.
-The default is 90, which corresponds to 1 SVG user unit 
+It is also used for fallback rasterization of filtered objects
+when exporting to PS, EPS, or PDF (unless you specify --export-ignore-filters to suppress
+rasterization). The default is 90 dpi, which corresponds to 1 SVG user unit 
 (px, also called "user unit") exporting to 1 bitmap pixel.
 This value overrides the DPI hint if used with --export-use-hints.
 
@@ -271,7 +273,8 @@ Convert text objects to paths on export, where applicable (for PS, EPS, and PDF
 
 =item B<--export-ignore-filters>
 
-Export filtered objects (e.g. those with blur) as vectors, ignoring the filters (for PS, EPS, and PDF export). By default, all filtered objects are rasterized, preserving the appearance.
+Export filtered objects (e.g. those with blur) as vectors, ignoring the filters (for PS, EPS, and PDF export). 
+By default, all filtered objects are rasterized at --export-dpi (default 90 dpi), preserving the appearance.
 
 =item B<-I>, B<--query-id>
 
diff --git a/src/main.cpp b/src/main.cpp
index 05cfc8578..d6da78a97 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -291,7 +291,7 @@ struct poptOption options[] = {
 
     {"export-dpi", 'd',
      POPT_ARG_STRING, &sp_export_dpi, SP_ARG_EXPORT_DPI,
-     N_("The resolution used for exporting SVG into bitmap (default 90)"),
+     N_("Resolution for exporting to bitmap and for rasterization of filters in PS/EPS/PDF (default 90)"),
      N_("DPI")},
 
     {"export-area", 'a',
@@ -1477,6 +1477,17 @@ static void do_export_ps_pdf(SPDocument* doc, gchar const* uri, char const* mime
         (*i)->set_param_bool("blurToBitmap", FALSE);
     } else {
         (*i)->set_param_bool("blurToBitmap", TRUE);
+
+        gdouble dpi = 90.0;
+        if (sp_export_dpi) {
+            dpi = atof(sp_export_dpi);
+            if ((dpi < 72) || (dpi > 2400.0)) {
+                g_warning("DPI value %s out of range [72 - 2400]. Using 90 dpi instead.", sp_export_dpi);
+                dpi = 90;
+            }
+        }
+
+        (*i)->set_param_int("resolution", (int) dpi);
     }
 
     (*i)->save(doc, uri);