+
+ /**
+ * @see http://www.rtapo.com/notes/named_colors.html
+ */
+ @Test(groups = { "Functional" })
+ public void testToTkCode()
+ {
+ assertEquals("#fffafa", ColorUtils.toTkCode(new Color(255, 250, 250))); // snow
+ assertEquals("#e6e6fa", ColorUtils.toTkCode(new Color(230, 230, 250))); // lavender
+ assertEquals("#dda0dd", ColorUtils.toTkCode(new Color(221, 160, 221))); // plum
+ assertEquals("#800080", ColorUtils.toTkCode(new Color(128, 0, 128))); // purple
+ assertEquals("#00ff00", ColorUtils.toTkCode(new Color(0, 255, 0))); // lime
+ }
+
+ @Test(groups = { "Functional" })
+ public void testGetGraduatedColour()
+ {
+ Color minColour = new Color(100, 100, 100);
+ Color maxColour = new Color(180, 200, 220);
+
+ /*
+ * value half-way between min and max
+ */
+ Color col = ColorUtils.getGraduatedColour(20f, 10f, minColour, 30f,
+ maxColour);
+ assertEquals(140, col.getRed());
+ assertEquals(150, col.getGreen());
+ assertEquals(160, col.getBlue());
+
+ /*
+ * value two-thirds of the way between min and max
+ */
+ col = ColorUtils.getGraduatedColour(30f, 10f, minColour, 40f,
+ maxColour);
+ assertEquals(153, col.getRed());
+ // Color constructor rounds float value to nearest int
+ assertEquals(167, col.getGreen());
+ assertEquals(180, col.getBlue());
+
+ /*
+ * value = min
+ */
+ col = ColorUtils.getGraduatedColour(10f, 10f, minColour, 30f,
+ maxColour);
+ assertEquals(minColour, col);
+
+ /*
+ * value = max
+ */
+ col = ColorUtils.getGraduatedColour(30f, 10f, minColour, 30f,
+ maxColour);
+ assertEquals(maxColour, col);
+
+ /*
+ * value < min
+ */
+ col = ColorUtils.getGraduatedColour(0f, 10f, minColour, 30f, maxColour);
+ assertEquals(minColour, col);
+
+ /*
+ * value > max
+ */
+ col = ColorUtils.getGraduatedColour(40f, 10f, minColour, 30f,
+ maxColour);
+ assertEquals(maxColour, col);
+
+ /*
+ * min = max
+ */
+ col = ColorUtils.getGraduatedColour(40f, 10f, minColour, 10f,
+ maxColour);
+ assertEquals(minColour, col);
+ }
+
+ @Test(groups = { "Functional" })
+ public void testBleachColour()
+ {
+ Color colour = new Color(155, 105, 55);
+ assertSame(colour, ColorUtils.bleachColour(colour, 0));
+ assertEquals(Color.WHITE, ColorUtils.bleachColour(colour, 1));
+ assertEquals(Color.WHITE, ColorUtils.bleachColour(colour, 2));
+ assertEquals(new Color(175, 135, 95),
+ ColorUtils.bleachColour(colour, 0.2f));
+ assertEquals(new Color(225, 210, 195),
+ ColorUtils.bleachColour(colour, 0.7f));
+
+ /*
+ * and some 'negative fade'
+ */
+ assertEquals(Color.BLACK, ColorUtils.bleachColour(colour, -1));
+ assertEquals(Color.BLACK, ColorUtils.bleachColour(colour, -2));
+ assertEquals(new Color(124, 84, 44),
+ ColorUtils.bleachColour(colour, -0.2f));
+ assertEquals(new Color(46, 31, 16), // with rounding down
+ ColorUtils.bleachColour(colour, -0.7f));
+ }
+
+ @Test(groups = "Functional")
+ public void testParseColourString()
+ {
+ /*
+ * by colour name - if known to AWT, and included in
+ *
+ * @see ColourSchemeProperty.getAWTColorFromName()
+ */
+ assertSame(Color.RED, ColorUtils.parseColourString("red"));
+ assertSame(Color.RED, ColorUtils.parseColourString("Red"));
+ assertSame(Color.RED, ColorUtils.parseColourString(" RED "));
+
+ /*
+ * by RGB hex code
+ */
+ String hexColour = Integer.toHexString(Color.RED.getRGB() & 0xffffff);
+ assertEquals("ff0000", hexColour);
+ assertEquals(Color.RED, ColorUtils.parseColourString(hexColour));
+ // 'hex' prefixes _not_ wanted here
+ assertNull(ColorUtils.parseColourString("0x" + hexColour));
+ assertNull(ColorUtils.parseColourString("#" + hexColour));
+ // out of range, but Color constructor just or's the rgb value with 0
+ assertEquals(Color.black, ColorUtils.parseColourString("1000000"));
+
+ /*
+ * by RGB triplet
+ */
+ Color c = Color.pink;
+ String rgb = String.format("%d,%d,%d", c.getRed(), c.getGreen(),
+ c.getBlue());
+ assertEquals("255,175,175", rgb);
+ assertEquals(c, ColorUtils.parseColourString(rgb));
+ assertEquals(c, ColorUtils.parseColourString("255, 175 , 175"));
+
+ /*
+ * odds and ends
+ */
+ assertNull(ColorUtils.parseColourString(null));
+ assertNull(ColorUtils.parseColourString("rubbish"));
+ assertEquals(Color.WHITE, ColorUtils.parseColourString("-1"));
+ assertNull(ColorUtils
+ .parseColourString(String.valueOf(Integer.MAX_VALUE)));
+ assertNull(ColorUtils.parseColourString("100,200,300")); // out of range
+ assertNull(ColorUtils.parseColourString("100,200")); // too few
+ assertNull(ColorUtils.parseColourString("100,200,100,200")); // too many
+ }
+
+ @Test(groups = "Functional")
+ public void testGetAWTColorFromName()
+ {
+ assertEquals(Color.white, ColorUtils.getAWTColorFromName("white"));
+ assertEquals(Color.white, ColorUtils.getAWTColorFromName("White"));
+ assertEquals(Color.white, ColorUtils.getAWTColorFromName("WHITE"));
+ assertEquals(Color.pink, ColorUtils.getAWTColorFromName("pink"));
+ assertNull(ColorUtils.getAWTColorFromName("mauve")); // no such name
+ assertNull(ColorUtils.getAWTColorFromName(""));
+ assertNull(ColorUtils.getAWTColorFromName(null));
+ }
+
+ @Test(groups = "Functional")
+ public void testCreateColourFromName()
+ {
+ assertEquals(Color.white, ColorUtils.createColourFromName(null));
+ assertEquals(new Color(20, 20, 20),
+ ColorUtils.createColourFromName(""));
+ assertEquals(new Color(98, 131, 171),
+ ColorUtils.createColourFromName("None")); // no special treatment!
+ assertEquals(new Color(123, 211, 122),
+ ColorUtils.createColourFromName("hello world"));
+ assertEquals(new Color(27, 147, 112),
+ ColorUtils.createColourFromName("HELLO WORLD"));
+ /*
+ * the algorithm makes the same values for r,g,b if
+ * the string consists of 3 repeating substrings
+ */
+ assertEquals(new Color(184, 184, 184),
+ ColorUtils.createColourFromName("HELLO HELLO HELLO "));
+ }