[poppler] poppler/CairoOutputDev.cc poppler/CairoOutputDev.h

[Adrian Johnson]

 poppler/CairoOutputDev.cc |    8 ++++++--
 poppler/CairoOutputDev.h  |    1 +
 2 files changed, 7 insertions(+), 2 deletions(-)

New commits:
commit e8e42988c5cebab2ffa5fe020f30a3a645e90b5f
Author: Adrian Johnson <ajohnson at redneon.com>
Date:   Mon Jan 16 21:25:19 2012 +1030

    cairo: ensure paintTransparencyGroup uses same ctm as beginTransparencyGroup
    
    Bug 29968

diff --git a/poppler/CairoOutputDev.cc b/poppler/CairoOutputDev.cc
index db7e654..051f5d0 100644
--- a/poppler/CairoOutputDev.cc
+++ b/poppler/CairoOutputDev.cc
@@ -1396,6 +1396,7 @@ void CairoOutputDev::beginTransparencyGroup(GfxState * /*state*/, double * /*bbo
   ColorSpaceStack* css = new ColorSpaceStack;
   css->cs = blendingColorSpace;
   css->knockout = knockout;
+  cairo_get_matrix(cairo, &css->group_matrix);
   css->next = groupColorSpaceStack;
   groupColorSpaceStack = css;
 
@@ -1452,10 +1453,12 @@ void CairoOutputDev::endTransparencyGroup(GfxState * /*state*/) {
 }
 
 void CairoOutputDev::paintTransparencyGroup(GfxState * /*state*/, double * /*bbox*/) {
-  cairo_set_source (cairo, group);
-
   LOG(printf ("paint transparency group\n"));
 
+  cairo_save (cairo);
+  cairo_set_matrix (cairo, &groupColorSpaceStack->group_matrix);
+  cairo_set_source (cairo, group);
+
   if (!mask) {
     //XXX: deal with mask && shape case
     if (shape) {
@@ -1495,6 +1498,7 @@ void CairoOutputDev::paintTransparencyGroup(GfxState * /*state*/, double * /*bbo
   }
 
   popTransparencyGroup();
+  cairo_restore(cairo);
 }
 
 static int luminocity(uint32_t x)
diff --git a/poppler/CairoOutputDev.h b/poppler/CairoOutputDev.h
index 949d459..b2e6fb2 100644
--- a/poppler/CairoOutputDev.h
+++ b/poppler/CairoOutputDev.h
@@ -348,6 +348,7 @@ protected:
   struct ColorSpaceStack {
     GBool knockout;
     GfxColorSpace *cs;
+    cairo_matrix_t group_matrix;
     struct ColorSpaceStack *next;
   } * groupColorSpaceStack;