Revision: 3143
http://vexi.svn.sourceforge.net/vexi/?rev=3143&view=rev
Author: clrg
Date: 2008-10-27 16:35:41 +0000 (Mon, 27 Oct 2008)
Log Message:
-----------
Beginnings of vexi.util.color (currently just one static function:
getReadableColor)
Added Paths:
-----------
trunk/widgets/org.vexi.widgets/src/vexi/util/color.t
trunk/widgets/org.vexi.widgets/src_dev/test/color.t
Added: trunk/widgets/org.vexi.widgets/src/vexi/util/color.t
===================================================================
--- trunk/widgets/org.vexi.widgets/src/vexi/util/color.t
(rev 0)
+++ trunk/widgets/org.vexi.widgets/src/vexi/util/color.t 2008-10-27
16:35:41 UTC (rev 3143)
@@ -0,0 +1,27 @@
+<!-- Copyright 2008 - see COPYING for details [LGPL] -->
+
+<vexi xmlns:ui="vexi://ui" xmlns:meta="vexi://meta">
+ <meta:doc>
+ <author>Charles Goodwin</author>
+ <name>Color</name>
+ <desc>Utility functions for working with colors</desc>
+ </meta:doc>
+
+ <ui:box />
+
+ var readable = {};
+
+ /** takes a string 'v' and parses it as a date for 'o' */
+ static.getReadableColor = function(c) {
+ if (readable[c]) return readable[c];
+ if (c.charAt(0)!='#') throw "Color must be in hex format";
+ var r = vexi.string.parseInt(c.substring(1,3), 16)
+ + vexi.string.parseInt(c.substring(3,5), 16)
+ + vexi.string.parseInt(c.substring(5,7), 16);
+ r = vexi.math.ceil(r/3);
+ r = r>128 ? "black" : "white";
+ readable[c] = r;
+ return r;
+ }
+
+</vexi>
Added: trunk/widgets/org.vexi.widgets/src_dev/test/color.t
===================================================================
--- trunk/widgets/org.vexi.widgets/src_dev/test/color.t
(rev 0)
+++ trunk/widgets/org.vexi.widgets/src_dev/test/color.t 2008-10-27 16:35:41 UTC
(rev 3143)
@@ -0,0 +1,18 @@
+<vexi xmlns:ui="vexi://ui" xmlns="vexi.util">
+ <ui:box orient="vertical">
+
+ vexi.ui.frame = thisbox;
+
+ var colors = ["#CC0000", "#00CC00", "#0000CC", "#CCCCCC",
+ "#660000", "#006600", "#000066", "#666666", "#333333"];
+
+ for (var i=0; colors.length>i; i++) {
+ var b = vexi.box;
+ b.fill = colors[i];
+ b.text = colors[i];
+ b.textcolor = .color..getReadableColor(colors[i]);
+ thisbox[numchildren] = b;
+ }
+
+ </ui:box>
+</vexi>
\ No newline at end of file
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