| /* |
| * Copyright 2000-2014 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.xml.util; |
| |
| import com.intellij.util.containers.HashMap; |
| import com.intellij.util.containers.SoftFactoryMap; |
| import com.intellij.util.ui.EmptyIcon; |
| import org.jetbrains.annotations.NotNull; |
| |
| import javax.swing.*; |
| import java.awt.*; |
| import java.util.Map; |
| |
| /** |
| * @author spleaner |
| */ |
| public class ColorIconCache { |
| private static final ColorIconCache INSTANCE = new ColorIconCache(); |
| private static final SoftFactoryMap<Color, Map<Integer, Icon>> ourCache = new SoftFactoryMap<Color, Map<Integer, Icon>>() { |
| @Override |
| protected Map<Integer, Icon> create(Color key) { |
| return new HashMap<Integer, Icon>(); |
| } |
| }; |
| |
| private ColorIconCache() { |
| } |
| |
| public static ColorIconCache getIconCache() { |
| return INSTANCE; |
| } |
| |
| public Icon getIcon(@NotNull final Color color, final int size) { |
| Icon icon = ourCache.get(color).get(size); |
| if (icon == null) { |
| icon = new ColorIcon(size, color); |
| ourCache.get(color).put(size, icon); |
| } |
| |
| return icon; |
| } |
| |
| public static class ColorIcon extends EmptyIcon { |
| private Color myColor; |
| private Color[] myColours; |
| |
| public ColorIcon(final int size, final Color color) { |
| super(size); |
| myColor = color; |
| } |
| |
| public ColorIcon(final int size, final Color[] colours) { |
| super(size); |
| myColours = colours; |
| } |
| |
| @Override |
| public void paintIcon(final Component component, final Graphics g, final int i, final int j) { |
| final int iconWidth = getIconWidth(); |
| final int iconHeight = getIconHeight(); |
| if (myColor != null) { |
| g.setColor(myColor); |
| g.fillRect(i, j, iconWidth, iconHeight); |
| } |
| else if (myColours != null) { |
| final Color top = myColours[0]; |
| g.setColor(top); |
| g.fillRect(i, j, iconWidth, 2); |
| |
| final Color right = myColours[1]; |
| g.setColor(right); |
| g.fillRect(i + iconWidth / 2, j + 2, iconWidth / 2, iconHeight / 2); |
| |
| final Color bottom = myColours[2]; |
| g.setColor(bottom); |
| g.fillRect(i, j + iconHeight - 2, iconWidth, 2); |
| |
| final Color left = myColours[3]; |
| g.setColor(left); |
| g.fillRect(i, j + 2, iconWidth / 2, iconHeight / 2); |
| } |
| |
| final Composite old = ((Graphics2D)g).getComposite(); |
| ((Graphics2D)g).setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.1f)); |
| g.setColor(Color.BLACK); |
| g.drawRect(i, j, iconWidth-1, iconHeight-1); |
| ((Graphics2D)g).setComposite(old); |
| } |
| } |
| } |