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Diffstat (limited to 'target_explorer/plugins/org.eclipse.tcf.te.ui.notifications/src/org/eclipse/tcf/te/ui/notifications/GradientColors.java')
| -rw-r--r-- | target_explorer/plugins/org.eclipse.tcf.te.ui.notifications/src/org/eclipse/tcf/te/ui/notifications/GradientColors.java | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/target_explorer/plugins/org.eclipse.tcf.te.ui.notifications/src/org/eclipse/tcf/te/ui/notifications/GradientColors.java b/target_explorer/plugins/org.eclipse.tcf.te.ui.notifications/src/org/eclipse/tcf/te/ui/notifications/GradientColors.java new file mode 100644 index 000000000..62105e371 --- /dev/null +++ b/target_explorer/plugins/org.eclipse.tcf.te.ui.notifications/src/org/eclipse/tcf/te/ui/notifications/GradientColors.java @@ -0,0 +1,187 @@ +/******************************************************************************* + * Copyright (c) 2004, 2013 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 + * Wind River Systems - Extracted from o.e.mylyn.commons and adapted for Target Explorer + *******************************************************************************/ + +package org.eclipse.tcf.te.ui.notifications; + +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; + +/** + * Based on FormColors of UI Forms. + * + * @author Benjamin Pasero (initial contribution from RSSOwl, see bug 177974) + * @author Mik Kersten + */ +public class GradientColors { + + private final Display display; + + private Color titleText; + + private Color gradientBegin; + + private Color gradientEnd; + + private Color border; + + private final ResourceManager resourceManager; + + public GradientColors(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); + } + } + +}
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