platform/platform-impl/src/com/intellij/ui/HorizontalLabeledIcon.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.intellij.ui;
  17
  18 import com.intellij.util.text.StringTokenizer;
  19 import com.intellij.util.ui.UIUtil;
  20
  21 import javax.swing.*;
  22 import java.awt.*;
  23
  24 /**
  25  * @author Vladimir Kondratyev
  26  */
  27 public class HorizontalLabeledIcon implements Icon {
  28   private final Icon myIcon;
  29   private final String[] myStrings;
  30   private final String myMnemonic;
  31
  32   /**
  33    * @param icon not <code>null</code> icon.
  34    * @param text to be painted under the <code>icon<code>. This parameter can
  35    *             be <code>null</code> if text isn't specified. In that case <code>LabeledIcon</code>
  36    */
  37   public HorizontalLabeledIcon(Icon icon, String text, String mnemonic) {
  38     myIcon = icon;
  39     if (text != null) {
  40       StringTokenizer tokenizer = new StringTokenizer(text, "\n");
  41       myStrings = new String[tokenizer.countTokens()];
  42       for (int i = 0; tokenizer.hasMoreTokens(); i++) {
  43         myStrings[i] = tokenizer.nextToken();
  44       }
  45     }
  46     else {
  47       myStrings = null;
  48     }
  49     myMnemonic = mnemonic;
  50   }
  51
  52   public int getIconHeight() {
  53     return Math.max(myIcon.getIconHeight(), getTextHeight());
  54   }
  55
  56   public int getIconWidth() {
  57     return myIcon.getIconWidth() + getTextWidth() + 5;
  58   }
  59
  60   private int getTextHeight() {
  61     if (myStrings != null) {
  62       Font font = UIUtil.getLabelFont();
  63       FontMetrics fontMetrics = Toolkit.getDefaultToolkit().getFontMetrics(font);
  64       return fontMetrics.getHeight() * myStrings.length;
  65     }
  66     else {
  67       return 0;
  68     }
  69   }
  70
  71   private int getTextWidth() {
  72     if (myStrings != null) {
  73       int width = 0;
  74       Font font = UIUtil.getLabelFont();
  75       FontMetrics fontMetrics = Toolkit.getDefaultToolkit().getFontMetrics(font);
  76       for (int i = 0; i < myStrings.length; i++) {
  77         String string = myStrings[i];
  78         if (myMnemonic != null && i == myStrings.length-1) {
  79           string += " "+myMnemonic;
  80         }
  81         width = Math.max(width, fontMetrics.stringWidth(string));
  82       }
  83
  84       return width;
  85     }
  86     else {
  87       return 0;
  88     }
  89   }
  90
  91   public void paintIcon(Component c, Graphics g, int x, int y) {
  92     // Draw icon
  93     int height = getIconHeight();
  94     int iconHeight = myIcon.getIconHeight();
  95     if (height > iconHeight) {
  96       myIcon.paintIcon(c, g, x, y + (height - iconHeight) / 2);
  97     }
  98     else {
  99       myIcon.paintIcon(c, g, x, y);
 100     }
 101
 102     // Draw text
 103     if (myStrings != null) {
 104       Font font = UIUtil.getLabelFont();
 105       FontMetrics fontMetrics = Toolkit.getDefaultToolkit().getFontMetrics(font);
 106       g.setFont(fontMetrics.getFont());
 107       g.setColor(UIUtil.getLabelForeground());
 108
 109       x += myIcon.getIconWidth() + 5;
 110       y += (height - getTextHeight()) / 2 + fontMetrics.getHeight() - fontMetrics.getDescent();
 111       for (int i = 0; i < myStrings.length; i++) {
 112         String string = myStrings[i];
 113         g.drawString(string, x, y);
 114         y += fontMetrics.getHeight();
 115       }
 116       if (myMnemonic != null) {
 117         g.setColor(UIUtil.getTextInactiveTextColor());
 118         int offset = fontMetrics.stringWidth(myStrings[myStrings.length-1]+" ");
 119         y -= fontMetrics.getHeight();
 120         g.drawString(myMnemonic, x + offset, y);
 121       }
 122     }
 123   }
 124
 125 }