/*******************************************************************************
* Copyright (c) 2002, 2007 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.ui.internal.cheatsheets.views;
import java.util.ArrayList;
import java.util.Iterator;
import org.eclipse.rwt.graphics.Graphics;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.ui.forms.FormColors;
import org.eclipse.ui.forms.HyperlinkGroup;
import org.eclipse.ui.forms.HyperlinkSettings;
import org.eclipse.ui.forms.widgets.FormToolkit;
import org.eclipse.ui.forms.widgets.ScrolledForm;
import org.eclipse.ui.internal.cheatsheets.CheatSheetPlugin;
import org.eclipse.ui.internal.cheatsheets.CheatSheetStopWatch;
import org.eclipse.ui.internal.cheatsheets.ICheatSheetResource;
import org.eclipse.ui.internal.cheatsheets.Messages;
import org.eclipse.ui.internal.cheatsheets.actions.IMenuContributor;
import org.eclipse.ui.internal.cheatsheets.data.CheatSheet;
public class CheatSheetPage extends Page implements IMenuContributor {
// Colors
private Color introColor;
private Color activeColor;
private Color inactiveColor1;
private Color inactiveColor2;
private CheatSheet cheatSheet;
private ArrayList viewItemList;
private CheatSheetViewer viewer;
public CheatSheetPage(CheatSheet cheatSheet, ArrayList viewItemList,
CheatSheetViewer cheatSheetViewer) {
super();
this.cheatSheet = cheatSheet;
this.viewItemList = viewItemList;
this.viewer = cheatSheetViewer;
}
public void createPart(Composite parent) {
CheatSheetStopWatch.startStopWatch("CheatSheetPage.createPart()"); //$NON-NLS-1$
super.createPart(parent);
HyperlinkGroup hyperlinkGroup = toolkit.getHyperlinkGroup();
hyperlinkGroup.setHyperlinkUnderlineMode(HyperlinkSettings.UNDERLINE_HOVER);
CheatSheetStopWatch
.printLapTime(
"CheatSheetPage.createPart()", "Time in CheatSheetPage.createInfoArea() after super.createInfoArea(): "); //$NON-NLS-1$ //$NON-NLS-2$
IntroItem intro = new IntroItem(this, cheatSheet.getIntroItem(),
introColor, viewer);
CheatSheetStopWatch
.printLapTime(
"CheatSheetPage.createPart()", "Time in CheatSheetPage.createInfoArea() after new IntroItem(): "); //$NON-NLS-1$ //$NON-NLS-2$
intro.setBold(true);
viewItemList.add(intro);
CheatSheetStopWatch
.printLapTime(
"CheatSheetPage.createInfoArea()", "Time in CheatSheetPage.createPart() before add loop: "); //$NON-NLS-1$ //$NON-NLS-2$
// Get the content info from the parser. This makes up all items except
// the intro item.
ArrayList items = cheatSheet.getItems();
for (int i = 0; i < items.size(); i++) {
Color color = (i % 2) == 0 ? getInactiveColor1() : getInactiveColor2();
CoreItem coreItem = new CoreItem(this,
(org.eclipse.ui.internal.cheatsheets.data.Item) items
.get(i), color, viewer);
viewItemList.add(coreItem);
}
CheatSheetStopWatch
.printLapTime(
"CheatSheetPage.createInfoArea()", "Time in CheatSheetPage.createPart(): "); //$NON-NLS-1$ //$NON-NLS-2$
}
private Color getInactiveColor2() {
return inactiveColor2;
}
private Color getInactiveColor1() {
return inactiveColor1;
}
/**
* Creates the cheatsheet's title areawhich will consists of a title and
* image.
*
* @param parent
* the SWT parent for the title area composite
*/
protected String getTitle() {
if (cheatSheet != null && cheatSheet.getTitle() != null)
return cheatSheet.getTitle();
return ICheatSheetResource.EMPTY_STRING;
}
public void dispose() {
super.dispose();
// RAP [if]
// if (getInactiveColor1() != null)
// getInactiveColor1().dispose();
// if (getInactiveColor2() != null)
// getInactiveColor2().dispose();
//
// if (activeColor != null)
// activeColor.dispose();
//
// if (introColor != null)
// introColor.dispose();
inactiveColor1 = null;
inactiveColor2 = null;
activeColor = null;
introColor = null;
}
protected void init(Display display) {
super.init(display);
computeColors(display);
}
private void computeColors(Display display) {
RGB rgb;
RGB white = new RGB(255, 255, 255);
RGB black = new RGB(0, 0, 0);
if (isReverseVideo()) {
computeReverseVideoColors(display);
return;
}
if (toolkit.getColors().isWhiteBackground()) {
rgb = toolkit.getColors().getSystemColor(SWT.COLOR_LIST_SELECTION);
// active color is selection + 80% white
rgb = FormColors.blend(rgb, white, 20);
// test for bounds
if (FormColors.testTwoPrimaryColors(rgb, 245, 256)) {
// too bright - tone down 20%
rgb = FormColors.blend(rgb, black, 80);
} else if (FormColors.testAnyPrimaryColor(rgb, 170, 191)) {
// too dark - brighten 15%
rgb = FormColors.blend(rgb, white, 85);
} else if (FormColors.testAnyPrimaryColor(rgb, 190, 215)) {
// too dark - brighten 10%
rgb = FormColors.blend(rgb, white, 90);
}
// final check - if gray
if (Math.abs(rgb.blue-rgb.green) <5 &&
Math.abs(rgb.blue-rgb.red)<5 &&
Math.abs(rgb.green-rgb.red)<5) {
// blend with blue
rgb = FormColors.blend(rgb, new RGB(100, 100, 255), 90);
}
// RAP [if]
// introColor = new Color(display, rgb);
// inactiveColor2 = new Color(display, rgb);
introColor = Graphics.getColor( rgb );
inactiveColor2 = Graphics.getColor( rgb );
} else {
// colored background
rgb = toolkit.getColors().getSystemColor(SWT.COLOR_LIST_SELECTION);
// active color is selection + 70% white
rgb = FormColors.blend(rgb, white, 30);
// If these values are in the range of 201 to 220, then decrease
// white by 20%
if (FormColors.testTwoPrimaryColors(rgb, 200, 221))
rgb = FormColors.blend(rgb, black, 80);
// If these values are in the range of 221 to 240, then decrease
// white by 40%
else if (FormColors.testTwoPrimaryColors(rgb, 222, 241))
rgb = FormColors.blend(rgb, black, 60);
// If these values are in the range of 241 to 255, then decrease
// white by 70%
else if (FormColors.testTwoPrimaryColors(rgb, 240, 256))
rgb = FormColors.blend(rgb, black, 30);
// RAP [if]
// introColor = new Color(display, rgb);
// inactiveColor2 = new Color(display, rgb);
introColor = Graphics.getColor( rgb );
inactiveColor2 = Graphics.getColor( rgb );
}
rgb = inactiveColor2.getRGB();
rgb = FormColors.blend(rgb, backgroundColor.getRGB(), 40);
// RAP [if]
// inactiveColor1 = new Color(display, rgb);
// activeColor = new Color(display, backgroundColor.getRGB());
inactiveColor1 = Graphics.getColor( rgb );
activeColor = Graphics.getColor( backgroundColor.getRGB() );
}
private void computeReverseVideoColors(Display display) {
Color background = toolkit.getColors().getBackground();
RGB white = new RGB(255, 255, 255);
// Create new colors, they will get disposed
RGB rgb = background.getRGB();
// RAP [if]
// activeColor = new Color(display, rgb );
activeColor = Graphics.getColor( rgb );
rgb = FormColors.blend(rgb, white, 85);
// inactiveColor1 = new Color(display, rgb);
inactiveColor1 = Graphics.getColor( rgb );
rgb = FormColors.blend(rgb, white, 85);
// inactiveColor2 = new Color(display, rgb );
// introColor = new Color(display, rgb );
inactiveColor2 = Graphics.getColor( rgb );
introColor = Graphics.getColor( rgb );
}
private boolean isReverseVideo() {
Color bg = toolkit.getColors().getBackground();
return ((bg.getBlue() + bg.getRed() + bg.getGreen()) < 380);
}
public void initialized() {
for (Iterator iter = viewItemList.iterator(); iter.hasNext();) {
ViewItem item = (ViewItem) iter.next();
item.initialized();
}
}
public Color getActiveColor() {
return activeColor;
}
public ScrolledForm getForm() {
return form;
}
public FormToolkit getToolkit() {
return toolkit;
}
private int contributeRestartItem(Menu menu, int index) {
MenuItem item = new MenuItem(menu, SWT.PUSH, index++);
item.setText(Messages.get().RESTART_MENU);
item.setImage(CheatSheetPlugin.getPlugin().getImage(ICheatSheetResource.CHEATSHEET_RETURN));
item.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
viewer.restart();
}
});
return index;
}
public int contributeToViewMenu(Menu menu, int index) {
return contributeRestartItem(menu, index);
}
}