Allow the color() command to use names as well as numbers.

With fix for a bug where alpha of 0.0 was mishandled applied.

1 files changed, 21 insertions, 0 deletions

diff --git a/src/transform.cc b/src/transform.cc
index e841ef0..01bd808 100644
--- a/src/transform.cc
+++ b/src/transform.cc
@@ -227,6 +227,27 @@ AbstractNode *TransformModule::evaluate(const Context *ctx, const ModuleInstanti
 		if (v.type == Value::VECTOR) {
 			for (int i = 0; i < 4; i++)
 				node->m[16+i] = i < v.vec.size() ? v.vec[i]->num : 1.0;
+		} else if (v.type == Value::STRING) {
+			double alpha = 1.0;
+			QString colorname = v.text;
+			if (v.text.contains(",")) {
+				QStringList chunks = v.text.split(",");
+				colorname = chunks[0];
+				bool parseok;
+				alpha = chunks[1].toDouble(&parseok);
+				if (!parseok) alpha=1.0;
+			}
+			QColor color;
+			color.setNamedColor(colorname);
+			if (color.isValid()) {
+				node->m[16+0] = color.redF();
+				node->m[16+1] = color.greenF();
+				node->m[16+2] = color.blueF();
+				node->m[16+3] = alpha;
+			} else {
+				PRINTF_NOCACHE("WARNING: Color name \"%s\" unknown. Please see",v.text.toUtf8().data());
+				PRINTF_NOCACHE("WARNING: http://en.wikipedia.org/wiki/Web_colors");
+			}
 		}
 	}