* infrastructure to store device colors as described in http://www.w3.org/TR/2009/WD-SVGColor12-20091001/#device

* related to https://bugs.launchpad.net/inkscape/+bug/444021

(bzr r8871)

3 files changed, 136 insertions, 0 deletions

diff --git a/src/svg/svg-color.cpp b/src/svg/svg-color.cpp
index d6b33402f..0eaa4431a 100644
--- 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++
diff --git a/src/svg/svg-color.h b/src/svg/svg-color.h
index a3868c149..f4e534652 100644
--- a/src/svg/svg-color.h
+++ b/src/svg/svg-color.h
@@ -4,6 +4,7 @@
 #include <glib/gtypes.h>
 
 class SVGICCColor;
+class SVGDeviceColor;
 
 guint32 sp_svg_read_color(gchar const *str, unsigned int dfl);
 guint32 sp_svg_read_color(gchar const *str, gchar const **end_ptr, guint32 def);
@@ -11,6 +12,8 @@ void sp_svg_write_color(char *buf, unsigned int buflen, unsigned int rgba32);
 
 bool sp_svg_read_icc_color( gchar const *str, gchar const **end_ptr, SVGICCColor* dest );
 bool sp_svg_read_icc_color( gchar const *str, SVGICCColor* dest );
+bool sp_svg_read_device_color( gchar const *str, gchar const **end_ptr, SVGDeviceColor* dest );
+bool sp_svg_read_device_color( gchar const *str, SVGDeviceColor* dest );
 void icc_color_to_sRGB(SVGICCColor* dest, guchar* r, guchar* g, guchar* b);
 
 #endif /* !SVG_SVG_COLOR_H_SEEN */
diff --git a/src/svg/svg-device-color.h b/src/svg/svg-device-color.h
new file mode 100644
index 000000000..305133ed3
--- /dev/null
+++ b/src/svg/svg-device-color.h
@@ -0,0 +1,26 @@
+#ifndef SVG_DEVICE_COLOR_H_SEEN
+#define SVG_DEVICE_COLOR_H_SEEN
+
+#include <string>
+#include <vector>
+
+typedef enum {DEVICE_COLOR_INVALID, DEVICE_GRAY, DEVICE_RGB, DEVICE_CMYK, DEVICE_NCHANNEL} SVGDeviceColorType;
+
+struct SVGDeviceColor {
+    SVGDeviceColorType type;
+    std::vector<double> colors;
+};
+
+
+#endif /* !SVG_DEVICE_COLOR_H_SEEN */
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :