Patch from codedread. Prevents rendering of title/desc/metadata elements in text...

[inkscape.git] / src / display / nr-filter-offset.cpp

diff --git a/src/display/nr-filter-offset.cpp b/src/display/nr-filter-offset.cpp
index 3b9c051e20ca9dca95c126f90dacec89bc7a4de3..683c4f83d45fe859bf13c04a16dd19f9ea7f0c9f 100644 (file)
--- a/src/display/nr-filter-offset.cpp
+++ b/src/display/nr-filter-offset.cpp
@@ -11,6 +11,7 @@
 
 #include "display/nr-filter-offset.h"
 #include "display/nr-filter-slot.h"
+#include "display/nr-filter-units.h"
 #include "libnr/nr-blit.h"
 #include "libnr/nr-matrix.h"
 #include "libnr/nr-pixblock.h"
@@ -31,10 +32,17 @@ FilterPrimitive * FilterOffset::create() {
 FilterOffset::~FilterOffset()
 {}
 
-int FilterOffset::render(FilterSlot &slot, Matrix const &trans) {
+int FilterOffset::render(FilterSlot &slot, FilterUnits const &units) {
     NRPixBlock *in = slot.get(_input);
+    // Bail out if source image is missing
+    if (!in) {
+        g_warning("Missing source image for feOffset (in=%d)", _input);
+        return 1;
+    }
+
     NRPixBlock *out = new NRPixBlock;
 
+    Matrix trans = units.get_matrix_primitiveunits2pb();
     Point offset(dx, dy);
     offset *= trans;
     offset[X] -= trans[4];