Streamlined pygauge/pyfaGaugePreferences a little; moved common code in gui.utils.colorUtils - this module will be used soon everywhere where color processing is needed (shipbrowser/chrometabs..)

gui/utils/colorUtils.py

@@ -0,0 +1,46 @@
+import wx
+
+#Brightens a color (wx.Colour), factor = [0,1]
+def BrightenColor(color, factor):
+
+    r,g,b = color
+    a = color.Alpha()
+
+    factor = min(max(factor, 0), 1)
+
+    r+=(255-r)*factor
+    b+=(255-b)*factor
+    g+=(255-g)*factor
+
+    return wx.Colour(r,g,b,a)
+
+#Darkens a color (wx.Colour), factor = [0, 1]
+def DarkenColor(color, factor):
+    bkR ,bkG , bkB = color
+    alpha = color.Alpha()
+    factor = 1 - factor
+    r = float(bkR * factor)
+    g = float(bkG * factor)
+    b = float(bkB * factor)
+
+    r = min(max(r,0),255)
+    b = min(max(b,0),255)
+    g = min(max(g,0),255)
+
+    return wx.Colour(r, g, b, alpha)
+
+#Calculates the color between a given start and end colors, delta = [0,1]
+#Colors are wx.Colour objects
+
+def CalculateTransitionColor(startColor, endColor, delta):
+    sR,sG,sB = startColor
+    eR,eG,eB = endColor
+
+    alphaS = startColor.Alpha()
+    alphaE = endColor.Alpha()
+
+    tR = sR + (eR - sR) *  delta
+    tG = sG + (eG - sG) *  delta
+    tB = sB + (eB - sB) *  delta
+
+    return wx.Colour(tR, tG, tB, (alphaS + alphaE)/2)