wip: js modularization of lightbox and cleanup

resources/www/common/js/components/utils.js

@@ -0,0 +1,92 @@
+var p4 = p4 || {};
+
+var utilsModule = (function (p4) {
+
+
+    function RGBtoHex(R, G, B) {
+        return _toHex(R) + _toHex(G) + _toHex(B);
+    }
+    function _toHex(N) {
+        if (N === null) return "00";
+        N = parseInt(N);
+        if (N === 0 || isNaN(N)) return "00";
+        N = Math.max(0, N);
+        N = Math.min(N, 255);
+        N = Math.round(N);
+        return "0123456789ABCDEF".charAt((N - N % 16) / 16)
+            + "0123456789ABCDEF".charAt(N % 16);
+    }
+    function hsl2rgb(h, s, l) {
+        var m1, m2, hue;
+        var r, g, b;
+        s /= 100;
+        l /= 100;
+        if (s === 0)
+            r = g = b = (l * 255);
+        else {
+            if (l <= 0.5)
+                m2 = l * (s + 1);
+            else
+                m2 = l + s - l * s;
+            m1 = l * 2 - m2;
+            hue = h / 360;
+            r = _HueToRgb(m1, m2, hue + 1 / 3);
+            g = _HueToRgb(m1, m2, hue);
+            b = _HueToRgb(m1, m2, hue - 1 / 3);
+        }
+        return {
+            r: r,
+            g: g,
+            b: b
+        };
+    }
+
+    function _HueToRgb(m1, m2, hue) {
+        var v;
+        if (hue < 0)
+            hue += 1;
+        else if (hue > 1)
+            hue -= 1;
+
+        if (6 * hue < 1)
+            v = m1 + (m2 - m1) * hue * 6;
+        else if (2 * hue < 1)
+            v = m2;
+        else if (3 * hue < 2)
+            v = m1 + (m2 - m1) * (2 / 3 - hue) * 6;
+        else
+            v = m1;
+
+        return 255 * v;
+    }
+
+    function is_ctrl_key(event) {
+        if (event.altKey)
+            return true;
+        if (event.ctrlKey)
+            return true;
+        if (event.metaKey)	// apple key opera
+            return true;
+        if (event.keyCode === 17)	// apple key opera
+            return true;
+        if (event.keyCode === 224)	// apple key mozilla
+            return true;
+        if (event.keyCode === 91)	// apple key safari
+            return true;
+
+        return false;
+    }
+
+    function is_shift_key(event) {
+        if (event.shiftKey)
+            return true;
+        return false;
+    }
+
+    return {
+        RGBtoHex: RGBtoHex,
+        hsl2rgb: hsl2rgb,
+        is_ctrl_key: is_ctrl_key,
+        is_shift_key: is_shift_key
+    };
+}(p4));