From e6f45cc425825b4326f1c312a84e4845f84b599a Mon Sep 17 00:00:00 2001
From: Tavmjong Bah <tavmjong@free.fr>
Date: Wed, 25 Sep 2013 12:00:17 +0200
Subject: Proper fix for bug 1127103 (Filter changes color when object
 flipped.)

(bzr r12590)
---
 src/display/nr-filter-slot.cpp | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

(limited to 'src/display')

diff --git a/src/display/nr-filter-slot.cpp b/src/display/nr-filter-slot.cpp
index fe67972d6..755a30a74 100644
--- a/src/display/nr-filter-slot.cpp
+++ b/src/display/nr-filter-slot.cpp
@@ -83,11 +83,15 @@ cairo_surface_t *FilterSlot::getcairo(int slot_nr)
         switch (slot_nr) {
             case NR_FILTER_SOURCEGRAPHIC: {
                 cairo_surface_t *tr = _get_transformed_source_graphic();
+                // Assume all source graphics are sRGB
+                set_cairo_surface_ci( tr, SP_CSS_COLOR_INTERPOLATION_SRGB );
                 _set_internal(NR_FILTER_SOURCEGRAPHIC, tr);
                 cairo_surface_destroy(tr);
             } break;
             case NR_FILTER_BACKGROUNDIMAGE: {
                 cairo_surface_t *bg = _get_transformed_background();
+                // Assume all backgrounds are sRGB
+                set_cairo_surface_ci( bg, SP_CSS_COLOR_INTERPOLATION_SRGB );
                 _set_internal(NR_FILTER_BACKGROUNDIMAGE, bg);
                 cairo_surface_destroy(bg);
             } break;
@@ -129,9 +133,6 @@ cairo_surface_t *FilterSlot::_get_transformed_source_graphic()
 
     if (trans.isTranslation()) {
         cairo_surface_reference(_source_graphic);
-
-        // Assume all source graphics are sRGB
-        set_cairo_surface_ci( _source_graphic, SP_CSS_COLOR_INTERPOLATION_SRGB );
         return _source_graphic;
     }
 
@@ -148,8 +149,6 @@ cairo_surface_t *FilterSlot::_get_transformed_source_graphic()
     cairo_paint(tsg_ct);
     cairo_destroy(tsg_ct);
 
-    // Assume all source graphics are sRGB
-    set_cairo_surface_ci( tsg, SP_CSS_COLOR_INTERPOLATION_SRGB );
     return tsg;
 }
 
@@ -177,17 +176,15 @@ cairo_surface_t *FilterSlot::_get_transformed_background()
         tbg = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, _slot_w, _slot_h);
     }
 
-    // Assume all source graphics are sRGB
-    set_cairo_surface_ci( tbg, SP_CSS_COLOR_INTERPOLATION_SRGB );
-
     return tbg;
 }
 
 cairo_surface_t *FilterSlot::get_result(int res)
 {
+    cairo_surface_t *result = getcairo(res);
+
     Geom::Affine trans = _units.get_matrix_pb2display();
     if (trans.isIdentity()) {
-        cairo_surface_t *result = getcairo(res);
         cairo_surface_reference(result);
         return result;
     }
@@ -196,12 +193,13 @@ cairo_surface_t *FilterSlot::get_result(int res)
         cairo_surface_get_content(_source_graphic),
         _source_graphic_area.width(),
         _source_graphic_area.height());
+    copy_cairo_surface_ci( result, r );
     cairo_t *r_ct = cairo_create(r);
 
     cairo_translate(r_ct, -_source_graphic_area.left(), -_source_graphic_area.top());
     ink_cairo_transform(r_ct, trans);
     cairo_translate(r_ct, _slot_x, _slot_y);
-    cairo_set_source_surface(r_ct, getcairo(res), 0, 0);
+    cairo_set_source_surface(r_ct, result, 0, 0);
     cairo_set_operator(r_ct, CAIRO_OPERATOR_SOURCE);
     cairo_paint(r_ct);
     cairo_destroy(r_ct);
-- 
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