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annotate dwtx/draw2d/Triangle.d @ 172:d994a8b2cdf7

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again compile fixes
author Frank Benoit <benoit@tionex.de>
date Wed, 10 Sep 2008 23:14:02 +0200
parents 95307ad235d9
children
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2005 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module dwtx.draw2d.Triangle;
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14
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15 import dwt.dwthelper.utils;
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16
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17 import dwtx.draw2d.geometry.Point;
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18 import dwtx.draw2d.geometry.PointList;
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19 import dwtx.draw2d.geometry.Rectangle;
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20 import dwtx.draw2d.Shape;
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21 import dwtx.draw2d.Orientable;
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22 import dwtx.draw2d.Graphics;
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23
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24 /**
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25 * A triangular graphical figure.
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26 */
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27 public final class Triangle
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28 : Shape
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29 , Orientable
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30 {
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31
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32 /** The direction this triangle will face. Possible values are
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33 * {@link PositionConstants#NORTH}, {@link PositionConstants#SOUTH},
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34 * {@link PositionConstants#EAST} and {@link PositionConstants#WEST}.
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35 */
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36 protected int direction = NORTH;
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37 /** The orientation of this triangle. Possible values are {@link Orientable#VERTICAL}
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38 * and {@link Orientable#HORIZONTAL}.
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39 */
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40 protected int orientation = VERTICAL;
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41
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42 /** The points of the triangle. */
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43 protected PointList triangle;
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44
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45 public this(){
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46 triangle = new PointList(3);
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47 }
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48 /**
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49 * @see Shape#fillShape(Graphics)
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50 */
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51 protected void fillShape(Graphics g) {
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52 g.fillPolygon(triangle);
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53 }
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54
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55 /**
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56 * @see Shape#outlineShape(Graphics)
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57 */
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58 protected void outlineShape(Graphics g) {
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59 g.drawPolygon(triangle);
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60 }
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61
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62 /**
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63 * @see Figure#primTranslate(int, int)
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64 */
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65 public void primTranslate(int dx, int dy) {
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66 super.primTranslate(dx, dy);
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67 triangle.translate(dx, dy);
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68 }
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69
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70 /**
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71 * @see Orientable#setDirection(int)
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72 */
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73 public void setDirection(int value) {
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74 if ((value & (NORTH | SOUTH)) !is 0)
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75 orientation = VERTICAL;
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76 else
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77 orientation = HORIZONTAL;
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78 direction = value;
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79 revalidate();
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80 repaint();
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81 }
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82
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83 /**
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84 * @see Orientable#setOrientation(int)
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85 */
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86 public void setOrientation(int value) {
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87 if (orientation is VERTICAL && value is HORIZONTAL) {
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88 if (direction is NORTH) setDirection(WEST);
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89 else setDirection(EAST);
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90 }
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91 if (orientation is HORIZONTAL && value is VERTICAL) {
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92 if (direction is WEST) setDirection(NORTH);
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93 else setDirection(SOUTH);
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94 }
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95 }
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96
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97 /**
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98 * @see IFigure#validate()
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99 */
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100 public void validate() {
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101 super.validate();
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102 Rectangle r = new Rectangle();
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103 r.setBounds(getBounds());
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104 r.crop(getInsets());
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105 r.resize(-1, -1);
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106 int size;
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107 switch (direction & (NORTH | SOUTH)) {
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108 case 0: //East or west.
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109 size = Math.min(r.height / 2, r.width);
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110 r.x += (r.width - size) / 2;
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111 break;
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112 default: //North or south
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113 size = Math.min(r.height, r.width / 2);
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114 r.y += (r.height - size) / 2;
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115 break;
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116 }
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117
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118 size = Math.max(size, 1); //Size cannot be negative
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119
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120 Point head, p2, p3;
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121
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122 switch (direction) {
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123 case NORTH:
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124 head = new Point(r.x + r.width / 2, r.y);
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125 p2 = new Point (head.x - size, head.y + size);
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126 p3 = new Point (head.x + size, head.y + size);
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127 break;
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128 case SOUTH:
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129 head = new Point (r.x + r.width / 2, r.y + size);
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130 p2 = new Point (head.x - size, head.y - size);
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131 p3 = new Point (head.x + size, head.y - size);
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132 break;
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133 case WEST:
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134 head = new Point (r.x, r.y + r.height / 2);
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135 p2 = new Point (head.x + size, head.y - size);
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136 p3 = new Point (head.x + size, head.y + size);
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137 break;
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138 default:
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139 head = new Point(r.x + size, r.y + r.height / 2);
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140 p2 = new Point(head.x - size, head.y - size);
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141 p3 = new Point(head.x - size, head.y + size);
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142
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143 }
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144 triangle.removeAllPoints();
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145 triangle.addPoint(head);
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146 triangle.addPoint(p2);
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147 triangle.addPoint(p3);
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148 }
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149
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150 }