platform/util/src/com/intellij/ui/SideBorder.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
  17 package com.intellij.ui;
  18
  19 import com.intellij.util.ui.UIUtil;
  20
  21 import javax.swing.border.LineBorder;
  22 import java.awt.*;
  23
  24 public class SideBorder extends LineBorder {
  25
  26   public static final int LEFT = 0x01;
  27   public static final int TOP = 0x02;
  28   public static final int RIGHT = 0x04;
  29   public static final int BOTTOM = 0x08;
  30   public static final int ALL = LEFT | TOP | RIGHT | BOTTOM;
  31
  32   private final int mySideMask;
  33   private final boolean myDotted;
  34
  35   public SideBorder(Color color, int mask) {
  36     this(color, mask, false);
  37   }
  38
  39   public SideBorder(Color color, int mask, boolean dotted) {
  40     super(color, 1);
  41     mySideMask = mask;
  42     myDotted = dotted;
  43   }
  44
  45   public Insets getBorderInsets(Component component) {
  46     return new Insets(
  47       (mySideMask & TOP) != 0 ? getThickness() : 0,
  48       (mySideMask & LEFT) != 0 ? getThickness() : 0,
  49       (mySideMask & BOTTOM) != 0 ? getThickness() : 0,
  50       (mySideMask & RIGHT) != 0 ? getThickness() : 0
  51     );
  52   }
  53
  54   public Insets getBorderInsets(Component component, Insets insets) {
  55     insets.top = (mySideMask & TOP) != 0 ? getThickness() : 0;
  56     insets.left = (mySideMask & LEFT) != 0 ? getThickness() : 0;
  57     insets.bottom = (mySideMask & BOTTOM) != 0 ? getThickness() : 0;
  58     insets.right = (mySideMask & RIGHT) != 0 ? getThickness() : 0;
  59     return insets;
  60   }
  61
  62   public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) {
  63     Color oldColor = g.getColor();
  64     int i;
  65
  66     g.setColor(getLineColor());
  67     for(i = 0; i < getThickness(); i++){
  68       if ((mySideMask & LEFT) != 0){
  69         drawLine(g, x + i, y + i, x + i, height - i - i - 1);
  70       }
  71       if ((mySideMask & TOP) != 0){
  72         drawLine(g, x + i, y + i, width - i - i - 1, y + i);
  73       }
  74       if ((mySideMask & RIGHT) != 0){
  75         drawLine(g, width - i - i - 1, y + i, width - i - i - 1, height - i - i - 1);
  76       }
  77       if ((mySideMask & BOTTOM) != 0){
  78         drawLine(g, x + i, height - i - i - 1, width - i - i - 1, height - i - i - 1);
  79       }
  80     }
  81     g.setColor(oldColor);
  82   }
  83
  84   private void drawLine(Graphics g, int x1, int y1, int x2, int y2) {
  85     if (myDotted) {
  86       UIUtil.drawDottedLine((Graphics2D)g, x1, y1, x2, y2, ((Graphics2D)g).getBackground(), getLineColor());
  87     }
  88     else {
  89       UIUtil.drawLine(g, x1, y1, x2, y2);
  90     }
  91   }
  92
  93   public void setLineColor(Color color) {
  94     lineColor = color;
  95   }
  96 }