From db87667df0c9068024267a4de6137487904048f2 Mon Sep 17 00:00:00 2001
From: Felipe Corr??a da Silva Sanches <juca@members.fsf.org>
Date: Sat, 15 Aug 2009 05:59:15 +0000
Subject: now gamut check works!

(bzr r8050.1.14)
---
 src/color-profile.cpp | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

(limited to 'src/color-profile.cpp')

diff --git a/src/color-profile.cpp b/src/color-profile.cpp
index de9dc6959..5f2364449 100644
--- a/src/color-profile.cpp
+++ b/src/color-profile.cpp
@@ -13,6 +13,7 @@
 #include <cstring>
 #include <string>
 #include "xml/repr.h"
+#include "color.h"
 #include "color-profile.h"
 #include "color-profile-fns.h"
 #include "attributes.h"
@@ -84,6 +85,15 @@ cmsHPROFILE ColorProfile::getSRGBProfile() {
     return _sRGBProf;
 }
 
+cmsHPROFILE ColorProfile::_NullProf = 0;
+
+cmsHPROFILE ColorProfile::getNULLProfile() {
+    if ( !_NullProf ) {
+        _NullProf = cmsCreateNULLProfile();
+    }
+    return _NullProf;
+}
+
 #endif // ENABLE_LCMS
 
 /**
@@ -144,6 +154,7 @@ void ColorProfile::init( ColorProfile *cprof )
     cprof->_profileSpace = icSigRgbData;
     cprof->_transf = 0;
     cprof->_revTransf = 0;
+    cprof->_gamutTransf = 0;
 #endif // ENABLE_LCMS
 }
 
@@ -197,6 +208,10 @@ void ColorProfile::_clearProfile()
         cmsDeleteTransform( _revTransf );
         _revTransf = 0;
     }
+    if ( _gamutTransf ) {
+        cmsDeleteTransform( _gamutTransf );
+        _gamutTransf = 0;
+    }
     if ( profHandle ) {
         cmsCloseProfile( profHandle );
         profHandle = 0;
@@ -496,6 +511,32 @@ cmsHTRANSFORM ColorProfile::getTransfFromSRGB8()
     return _revTransf;
 }
 
+cmsHTRANSFORM ColorProfile::getTransfGamutCheck()
+{
+    if ( !_gamutTransf ) {
+        _gamutTransf = cmsCreateProofingTransform(getSRGBProfile(), TYPE_RGBA_8, getNULLProfile(), TYPE_GRAY_8, profHandle, INTENT_RELATIVE_COLORIMETRIC, INTENT_RELATIVE_COLORIMETRIC, (cmsFLAGS_GAMUTCHECK|cmsFLAGS_SOFTPROOFING));
+    }
+    return _gamutTransf;
+}
+
+bool ColorProfile::GamutCheck(SPColor color){
+    BYTE outofgamut = 0;
+    
+    guint32 val = color.toRGBA32(0);
+    guchar check_color[4] = {
+        SP_RGBA32_R_U(val),
+        SP_RGBA32_G_U(val),
+        SP_RGBA32_B_U(val),
+        255};
+
+    int alarm_r, alarm_g, alarm_b;
+    cmsGetAlarmCodes(&alarm_r, &alarm_g, &alarm_b);
+    cmsSetAlarmCodes(255, 255, 255);
+    cmsDoTransform(ColorProfile::getTransfGamutCheck(), &check_color, &outofgamut, 1);
+    cmsSetAlarmCodes(alarm_r, alarm_g, alarm_b);
+    return (outofgamut == 255);
+}
+
 
 #include <io/sys.h>
 
-- 
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