* infrastructure to store device colors as described in http://www.w3.org/TR/2009...

[inkscape.git] / src / svg / svg-color.cpp

diff --git a/src/svg/svg-color.cpp b/src/svg/svg-color.cpp
index d6b33402faba8da0dd29e7ee00e73864b5ea8cd2..0eaa4431a1e59a265e0eb258443a7bf2d1454fae 100644 (file)
--- a/src/svg/svg-color.cpp
+++ b/src/svg/svg-color.cpp
@@ -35,6 +35,7 @@
 #include "preferences.h"
 #include "svg-color.h"
 #include "svg-icc-color.h"
+#include "svg-device-color.h"
 
 #if ENABLE_LCMS
 #include <lcms.h>
@@ -604,6 +605,112 @@ bool sp_svg_read_icc_color( gchar const *str, SVGICCColor* dest )
     return sp_svg_read_icc_color(str, NULL, dest);
 }
 
+bool sp_svg_read_device_color( gchar const *str, gchar const **end_ptr, SVGDeviceColor* dest)
+{
+    bool good = true;
+    unsigned int max_colors;
+
+    if ( end_ptr ) {
+        *end_ptr = str;
+    }
+    if ( dest ) {
+        dest->colors.clear();
+    }
+
+    if ( !str ) {
+        // invalid input
+        good = false;
+    } else {
+        while ( g_ascii_isspace(*str) ) {
+            str++;
+        }
+
+        dest->type = DEVICE_COLOR_INVALID;
+        if (strneq( str, "device-gray(", 12 )){
+                dest->type = DEVICE_GRAY;
+                max_colors=1;
+                str += 12;
+        }
+
+        if (strneq( str, "device-rgb(", 11 )){
+                dest->type = DEVICE_RGB;
+                max_colors=3;
+                str += 11;
+        }
+
+        if (strneq( str, "device-cmyk(", 12 )){
+                dest->type = DEVICE_CMYK;
+                max_colors=4;
+                str += 12;
+        }
+
+        if (strneq( str, "device-nchannel(", 16 )){
+                dest->type = DEVICE_NCHANNEL;
+                max_colors=0;
+                str += 16;
+        }
+
+        if ( dest->type != DEVICE_COLOR_INVALID ) {
+            while ( g_ascii_isspace(*str) ) {
+                str++;
+            }
+
+            while ( *str && *str != ')' ) {
+                if ( g_ascii_isdigit(*str) || *str == '.' || *str == '-' || *str == '+') {
+                    gchar* endPtr = 0;
+                    gdouble dbl = g_ascii_strtod( str, &endPtr );
+                    if ( !errno ) {
+                        if ( dest ) {
+                            dest->colors.push_back( dbl );
+g_message("color: %f", dbl);
+                        }
+                        str = endPtr;
+                    } else {
+                        good = false;
+                        break;
+                    }
+
+                    while ( g_ascii_isspace(*str) || *str == ',' ) {
+                        str++;
+                    }
+                } else {
+                    break;
+                }
+            }
+        }
+
+        // We need to have ended on a closing parenthesis
+        if ( good ) {
+            while ( g_ascii_isspace(*str) ) {
+                str++;
+            }
+            good &= (*str == ')');
+        }
+    }
+
+    if ( dest->colors.size() == 0) good=false;
+    if ( dest->type != DEVICE_NCHANNEL && (dest->colors.size() != max_colors)) good=false;
+
+    if ( good ) {
+        if ( end_ptr ) {
+            *end_ptr = str;
+        }
+    } else {
+        if ( dest ) {
+            dest->type = DEVICE_COLOR_INVALID;
+            dest->colors.clear();
+        }
+    }
+
+    return good;
+}
+
+
+bool sp_svg_read_device_color( gchar const *str, SVGDeviceColor* dest)
+{
+    return sp_svg_read_device_color(str, NULL, dest);
+}
+
 /*
   Local Variables:
   mode:c++