connectivity/com.nokia.carbide.remoteConnections/src/com/nokia/carbide/remoteconnections/internal/ui/mylyn/NotificationPopupColors.java
changeset 1104 e84724c7f393
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/connectivity/com.nokia.carbide.remoteConnections/src/com/nokia/carbide/remoteconnections/internal/ui/mylyn/NotificationPopupColors.java	Fri Mar 12 14:47:52 2010 -0600
@@ -0,0 +1,188 @@
+/*******************************************************************************
+ * Copyright (c) 2004, 2009 Tasktop Technologies and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Benjamin Pasero - initial API and implementation
+ *     Tasktop Technologies - improvements
+ *******************************************************************************/
+
+package com.nokia.carbide.remoteconnections.internal.ui.mylyn;
+
+import org.eclipse.jface.resource.DeviceResourceException;
+import org.eclipse.jface.resource.ResourceManager;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.graphics.Color;
+import org.eclipse.swt.graphics.RGB;
+import org.eclipse.swt.widgets.Display;
+
+/**
+ * Helper Class to create the colors for the {@link AbstractNotificationPopup}.
+ * <p>
+ * Note: Copied from FormColors of UI Forms.
+ * </p>
+ * 
+ * @author Benjamin Pasero (initial contribution from RSSOwl, see bug 177974)
+ * @author Mik Kersten
+ */
+public class NotificationPopupColors {
+
+	private final Display display;
+
+	private Color titleText;
+
+	private Color gradientBegin;
+
+	private Color gradientEnd;
+
+	private Color border;
+
+	private final ResourceManager resourceManager;
+
+	public NotificationPopupColors(Display display, ResourceManager resourceManager) {
+		this.display = display;
+		this.resourceManager = resourceManager;
+
+		createColors();
+	}
+
+	private void createColors() {
+		createBorderColor();
+		createGradientColors();
+		// previously used SWT.COLOR_TITLE_INACTIVE_FOREGROUND, but too light on Windows XP
+		titleText = getColor(resourceManager, getSystemColor(SWT.COLOR_WIDGET_DARK_SHADOW));
+	}
+
+	public Color getGradientBegin() {
+		return gradientBegin;
+	}
+
+	public Color getGradientEnd() {
+		return gradientEnd;
+	}
+
+	public Color getBorder() {
+		return border;
+	}
+
+	public Color getTitleText() {
+		return titleText;
+	}
+
+	private void createBorderColor() {
+		RGB tbBorder = getSystemColor(SWT.COLOR_TITLE_BACKGROUND);
+		RGB bg = getImpliedBackground().getRGB();
+
+		// Group 1
+		// Rule: If at least 2 of the RGB values are equal to or between 180 and
+		// 255, then apply specified opacity for Group 1
+		// Examples: Vista, XP Silver, Wn High Con #2
+		// Keyline = TITLE_BACKGROUND @ 70% Opacity over LIST_BACKGROUND
+		if (testTwoPrimaryColors(tbBorder, 179, 256)) {
+			tbBorder = blend(tbBorder, bg, 70);
+		} else if (testTwoPrimaryColors(tbBorder, 120, 180)) {
+			tbBorder = blend(tbBorder, bg, 50);
+		} else {
+			tbBorder = blend(tbBorder, bg, 30);
+		}
+
+		border = getColor(resourceManager, tbBorder);
+	}
+
+	private void createGradientColors() {
+		RGB titleBg = getSystemColor(SWT.COLOR_TITLE_BACKGROUND);
+		Color bgColor = getImpliedBackground();
+		RGB bg = bgColor.getRGB();
+		RGB bottom, top;
+
+		// Group 1
+		// Rule: If at least 2 of the RGB values are equal to or between 180 and
+		// 255, then apply specified opacity for Group 1
+		// Examples: Vista, XP Silver, Wn High Con #2
+		// Gradient Bottom = TITLE_BACKGROUND @ 30% Opacity over LIST_BACKGROUND
+		// Gradient Top = TITLE BACKGROUND @ 0% Opacity over LIST_BACKGROUND
+		if (testTwoPrimaryColors(titleBg, 179, 256)) {
+			bottom = blend(titleBg, bg, 30);
+			top = bg;
+		}
+
+		// Group 2
+		// Rule: If at least 2 of the RGB values are equal to or between 121 and
+		// 179, then apply specified opacity for Group 2
+		// Examples: XP Olive, OSX Graphite, Linux GTK, Wn High Con Black
+		// Gradient Bottom = TITLE_BACKGROUND @ 20% Opacity over LIST_BACKGROUND
+		// Gradient Top = TITLE BACKGROUND @ 0% Opacity over LIST_BACKGROUND
+		else if (testTwoPrimaryColors(titleBg, 120, 180)) {
+			bottom = blend(titleBg, bg, 20);
+			top = bg;
+		}
+
+		// Group 3
+		// Rule: If at least 2 of the RGB values are equal to or between 0 and
+		// 120, then apply specified opacity for Group 3
+		// Examples: XP Default, Wn Classic Standard, Wn Marine, Wn Plum, OSX
+		// Aqua, Wn High Con White, Wn High Con #1
+		// Gradient Bottom = TITLE_BACKGROUND @ 10% Opacity over LIST_BACKGROUND
+		// Gradient Top = TITLE BACKGROUND @ 0% Opacity over LIST_BACKGROUND
+		else {
+			bottom = blend(titleBg, bg, 10);
+			top = bg;
+		}
+
+		gradientBegin = getColor(resourceManager, top);
+		gradientEnd = getColor(resourceManager, bottom);
+	}
+
+	private RGB blend(RGB c1, RGB c2, int ratio) {
+		int r = blend(c1.red, c2.red, ratio);
+		int g = blend(c1.green, c2.green, ratio);
+		int b = blend(c1.blue, c2.blue, ratio);
+		return new RGB(r, g, b);
+	}
+
+	private int blend(int v1, int v2, int ratio) {
+		int b = (ratio * v1 + (100 - ratio) * v2) / 100;
+		return Math.min(255, b);
+	}
+
+	private boolean testTwoPrimaryColors(RGB rgb, int from, int to) {
+		int total = 0;
+		if (testPrimaryColor(rgb.red, from, to)) {
+			total++;
+		}
+		if (testPrimaryColor(rgb.green, from, to)) {
+			total++;
+		}
+		if (testPrimaryColor(rgb.blue, from, to)) {
+			total++;
+		}
+		return total >= 2;
+	}
+
+	private boolean testPrimaryColor(int value, int from, int to) {
+		return value > from && value < to;
+	}
+
+	private RGB getSystemColor(int code) {
+		return getDisplay().getSystemColor(code).getRGB();
+	}
+
+	private Color getImpliedBackground() {
+		return display.getSystemColor(SWT.COLOR_LIST_BACKGROUND);
+	}
+
+	private Display getDisplay() {
+		return display;
+	}
+
+	private Color getColor(ResourceManager manager, RGB rgb) {
+		try {
+			return manager.createColor(rgb);
+		} catch (DeviceResourceException e) {
+			return manager.getDevice().getSystemColor(SWT.COLOR_BLACK);
+		}
+	}
+}