1 | package org.expeditee.gui;
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2 |
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3 | import java.awt.BasicStroke;
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4 | import java.awt.Color;
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5 | import java.awt.Component;
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6 | import java.awt.Container;
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7 | import java.awt.Graphics;
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8 | import java.awt.Graphics2D;
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9 | import java.awt.LayoutManager;
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10 |
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11 | import javax.swing.JComponent;
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12 | import javax.swing.JPanel;
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13 |
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14 | import org.expeditee.items.ItemUtils;
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15 |
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16 | /**
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17 | *
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18 | * A Custom swing popup in Expeditee.
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19 | *
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20 | * Expeditee popus can be re-used. Popups are always heavyweight (i.e. uses invalidation).
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21 | *
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22 | * @see {@link PopupManager}
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23 | *
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24 | * @author Brook Novak
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25 | *
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26 | */
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27 | public abstract class Popup extends JPanel {
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28 |
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29 | //Mike says: Can we get the border for the IW to which this popup corresponds?
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30 | // Brook says: Would be nice - but popups are actually independant from widgets
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31 | // =>Now: It is up to the user of the popup to set the border thickness
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32 | private static final BasicStroke DEFAULT_STROKE = new BasicStroke(2.0f);
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33 |
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34 | private BasicStroke _borderStroke = DEFAULT_STROKE;
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35 | private Color _borderColor = Color.BLACK;
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36 |
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37 | private boolean _isReadyToPaint = false;
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38 | private boolean _consumeBackClick = false;
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39 | private boolean _autoHide = true;
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40 |
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41 | /**
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42 | * Creates a new popup.
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43 | * Autohide is set to true.
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44 | *
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45 | */
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46 | public Popup() {
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47 | super();
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48 | setVisible(false);
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49 | }
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50 |
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51 | /**
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52 | * Creates a new popup.
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53 | *
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54 | * @param layout the LayoutManager to use
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55 | */
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56 | public Popup(LayoutManager layout) {
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57 | super(layout);
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58 | setVisible(false);
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59 | }
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60 |
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61 | @Override
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62 | public void paint(Graphics g) {
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63 | super.paint(g);
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64 |
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65 | // Draw border - if not transparent
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66 | if (_borderStroke != null && _borderColor != null) {
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67 | g.setColor(_borderColor);
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68 | ((Graphics2D)g).setStroke(_borderStroke);
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69 | g.drawRect(0, 0, getWidth(), getHeight());
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70 | }
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71 | }
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72 |
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73 | private void ignoreAWTPainting(Component c) {
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74 |
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75 | if (c instanceof JComponent) {
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76 | ((JComponent)c).setDoubleBuffered(false);
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77 | }
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78 |
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79 | c.setIgnoreRepaint(true);
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80 |
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81 | if (c instanceof Container) {
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82 | for (Component child : ((Container) c).getComponents()) {
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83 |
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84 | if (child instanceof Container) {
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85 | ignoreAWTPainting(child);
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86 | } else {
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87 | if (child instanceof JComponent) {
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88 | ((JComponent)child).setDoubleBuffered(false);
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89 | }
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90 |
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91 | child.setIgnoreRepaint(true);
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92 | }
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93 | }
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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 | /**
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99 | * Ensures that AWT painting turned off
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100 | */
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101 | void prepareToPaint() {
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102 | if (!_isReadyToPaint) {
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103 | _isReadyToPaint = true;
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104 | ignoreAWTPainting(this);
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105 | }
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106 | }
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107 |
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108 | /**
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109 | * Invoked when the popup becomes hidden, or when the popup is animating to show but cancelled.
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110 | */
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111 | public void onHide() {}
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112 |
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113 | /**
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114 | * Invoked when the popup shows. Note this might not eventuate for animated popups.
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115 | */
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116 | public void onShow() {}
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117 |
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118 | /**
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119 | * Invoked when popups is going to show.
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120 | * This always is invoked first.
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121 | */
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122 | public void onShowing() {}
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123 |
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124 | public boolean shouldConsumeBackClick() {
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125 | return _consumeBackClick;
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126 | }
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127 |
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128 | /**
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129 | * @param consumeBackClick
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130 | * Set to True for whenever the user clicks empty space
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131 | * to go back a frame that if this popup is visible should
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132 | * consume the back-click event.
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133 | */
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134 | protected void setConsumeBackClick(boolean consumeBackClick) {
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135 | _consumeBackClick = consumeBackClick;
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136 | }
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137 |
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138 | /**
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139 | * @param autoHideOn
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140 | * Set to True if this popup should auto hide. (The default).
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141 | * Set to false if this popup should be manually hidden.
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142 | */
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143 | protected void setAudoHide(boolean autoHideOn) {
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144 | _autoHide = autoHideOn;
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145 | }
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146 |
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147 | /**
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148 | * @return
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149 | * True if this popup auto hides.
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150 | */
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151 | public boolean doesAutoHide() {
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152 | return _autoHide;
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153 | }
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154 |
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155 | /**
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156 | * Invalidates self.
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157 | *
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158 | * @param thickness
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159 | * The new thickness to set. Null for no border.
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160 | */
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161 | public void setBorderThickness(float thickness) {
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162 | assert(thickness >= 0);
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163 |
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164 | if (_borderStroke != null && _borderStroke.getLineWidth() == thickness)
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165 | return;
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166 |
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167 | boolean posInvalidate = true;
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168 |
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169 | if (thickness < _borderStroke.getLineWidth()) {
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170 | invalidateAppearance();
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171 | posInvalidate = false;
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172 | }
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173 |
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174 | if (thickness == 0) _borderStroke = null;
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175 | else _borderStroke = new BasicStroke(thickness);
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176 |
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177 | if (posInvalidate) invalidateAppearance();
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178 |
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179 | }
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180 |
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181 | /**
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182 | * @return
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183 | * The border thickness of this popup. Zero or more.
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184 | */
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185 | public float getBorderThickness() {
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186 | if (_borderStroke == null) return 0.0f;
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187 | return _borderStroke.getLineWidth();
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188 |
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189 | }
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190 |
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191 | /**
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192 | * Sets the border color around the popup.
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193 | * Invalidates self.
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194 | *
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195 | * @param c
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196 | * The new color. Null for transparent.
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197 | */
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198 | public void setBorderColor(Color c) {
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199 |
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200 | if (c == null && _borderColor != null)
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201 | invalidateAppearance();
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202 |
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203 | if (c != _borderColor) {
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204 | _borderColor = c;
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205 | invalidateAppearance();
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206 | }
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207 | }
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208 |
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209 | /**
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210 | *
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211 | * @return
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212 | * The border color for the popup. NUll if transparent
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213 | */
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214 | public Color getBorderColor() {
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215 | return _borderColor;
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216 | }
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217 |
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218 | /**
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219 | * Invalidates the whole popup so that it must be fully repainted.
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220 | */
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221 | public void invalidateAppearance() {
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222 |
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223 | if (_borderColor != null && _borderStroke != null && _borderStroke.getLineWidth() > 0) { // border
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224 | FrameGraphics.invalidateArea(ItemUtils.expandRectangle(getBounds(),
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225 | (int)Math.ceil(getBorderThickness()) + 1));
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226 | } else { // no border
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227 | FrameGraphics.invalidateArea(getBounds());
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228 | }
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229 |
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230 | }
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231 |
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232 |
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233 |
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234 | }
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