| 1 | // Copyright 2004-2007 Jean-Francois Poilpret |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | package net.sourceforge.hiveboard.util; |
| 16 | |
| 17 | import java.awt.Graphics; |
| 18 | import java.awt.Point; |
| 19 | import java.awt.Rectangle; |
| 20 | |
| 21 | public final class ResizeHandle |
| 22 | { |
| 23 | static final public int _NORTH = 0; |
| 24 | static final public int _SOUTH = 1; |
| 25 | static final public int _EAST = 2; |
| 26 | static final public int _WEST = 3; |
| 27 | static final public int _NE = 4; |
| 28 | static final public int _SE = 5; |
| 29 | static final public int _NW = 6; |
| 30 | static final public int _SW = 7; |
| 31 | |
| 32 | static final public ResizeHandle NORTH = new ResizeHandle(_NORTH); |
| 33 | static final public ResizeHandle SOUTH = new ResizeHandle(_SOUTH); |
| 34 | static final public ResizeHandle EAST = new ResizeHandle(_EAST); |
| 35 | static final public ResizeHandle WEST = new ResizeHandle(_WEST); |
| 36 | static final public ResizeHandle NORTH_EAST = new ResizeHandle(_NE); |
| 37 | static final public ResizeHandle SOUTH_EAST = new ResizeHandle(_SE); |
| 38 | static final public ResizeHandle NORTH_WEST = new ResizeHandle(_NW); |
| 39 | static final public ResizeHandle SOUTH_WEST = new ResizeHandle(_SW); |
| 40 | |
| 41 | static final public ResizeHandle[] ALL = |
| 42 | { NORTH, SOUTH, EAST, WEST, |
| 43 | NORTH_EAST, SOUTH_EAST, NORTH_WEST, SOUTH_WEST}; |
| 44 | |
| 45 | private ResizeHandle(int value) |
| 46 | { |
| 47 | _value = value; |
| 48 | } |
| 49 | |
| 50 | public boolean contains(Point pt, int x, int y, int width, int height) |
| 51 | { |
| 52 | Point origin = getHandleOrigin(x, y, width, height); |
| 53 | return (pt.x >= origin.x) |
| 54 | && (pt.x < origin.x + HANDLER_SIZE) |
| 55 | && (pt.y >= origin.y) |
| 56 | && (pt.y < origin.y + HANDLER_SIZE); |
| 57 | } |
| 58 | |
| 59 | public Rectangle resizeBounds(Rectangle bounds, int dx, int dy) |
| 60 | { |
| 61 | switch (_value) |
| 62 | { |
| 63 | case _NORTH: |
| 64 | bounds.y += dy; |
| 65 | bounds.height -= dy; |
| 66 | break; |
| 67 | |
| 68 | case _SOUTH: |
| 69 | bounds.height += dy; |
| 70 | break; |
| 71 | |
| 72 | case _EAST: |
| 73 | bounds.width += dx; |
| 74 | break; |
| 75 | |
| 76 | case _WEST: |
| 77 | bounds.x += dx; |
| 78 | bounds.width -= dx; |
| 79 | break; |
| 80 | |
| 81 | case _NE: |
| 82 | bounds.y += dy; |
| 83 | bounds.height -= dy; |
| 84 | bounds.width += dx; |
| 85 | break; |
| 86 | |
| 87 | case _SE: |
| 88 | bounds.height += dy; |
| 89 | bounds.width += dx; |
| 90 | break; |
| 91 | |
| 92 | case _NW: |
| 93 | bounds.y += dy; |
| 94 | bounds.height -= dy; |
| 95 | bounds.x += dx; |
| 96 | bounds.width -= dx; |
| 97 | break; |
| 98 | |
| 99 | case _SW: |
| 100 | bounds.height += dy; |
| 101 | bounds.x += dx; |
| 102 | bounds.width -= dx; |
| 103 | break; |
| 104 | |
| 105 | default: |
| 106 | break; |
| 107 | } |
| 108 | bounds.width = Math.max(0, bounds.width); |
| 109 | bounds.height = Math.max(0, bounds.height); |
| 110 | return bounds; |
| 111 | } |
| 112 | |
| 113 | // CSOFF: ParameterAssignmentCheck |
| 114 | private Point getHandleOrigin(int x, int y, int width, int height) |
| 115 | { |
| 116 | // Compute the real position based on _value |
| 117 | switch (_value) |
| 118 | { |
| 119 | case _NORTH: |
| 120 | x += (width - HANDLER_SIZE) / 2; |
| 121 | break; |
| 122 | |
| 123 | case _SOUTH: |
| 124 | x += (width - HANDLER_SIZE) / 2; |
| 125 | y += height - HANDLER_SIZE; |
| 126 | break; |
| 127 | |
| 128 | case _EAST: |
| 129 | x += width - HANDLER_SIZE; |
| 130 | y += (height - HANDLER_SIZE) / 2; |
| 131 | break; |
| 132 | |
| 133 | case _WEST: |
| 134 | y += (height - HANDLER_SIZE) / 2; |
| 135 | break; |
| 136 | |
| 137 | case _NE: |
| 138 | x += width - HANDLER_SIZE; |
| 139 | break; |
| 140 | |
| 141 | case _SE: |
| 142 | x += width - HANDLER_SIZE; |
| 143 | y += height - HANDLER_SIZE; |
| 144 | break; |
| 145 | |
| 146 | case _NW: |
| 147 | break; |
| 148 | |
| 149 | case _SW: |
| 150 | y += height - HANDLER_SIZE; |
| 151 | break; |
| 152 | |
| 153 | default: |
| 154 | break; |
| 155 | } |
| 156 | return new Point(x, y); |
| 157 | } |
| 158 | // CSON: ParameterAssignmentCheck |
| 159 | |
| 160 | public void drawHandle(Graphics g, int x, int y, int width, int height) |
| 161 | { |
| 162 | // Compute the real position based on _value |
| 163 | Point origin = getHandleOrigin(x, y, width, height); |
| 164 | // Now fill the rectangle |
| 165 | g.fillRect(origin.x, origin.y, HANDLER_SIZE, HANDLER_SIZE); |
| 166 | } |
| 167 | |
| 168 | private final int _value; |
| 169 | |
| 170 | static final private int HANDLER_SIZE = 5; |
| 171 | } |
| 172 | |