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6
7 package org.netbeans.swing.gridsplit;
8 import java.awt.Color  ;
9 import java.awt.Dimension ;
10 import java.awt.Graphics ;
11 import java.awt.Point ;
12 import java.awt.Rectangle ;
13 import java.awt.event.MouseEvent ;
14 import javax.swing.BorderFactory ;
15 import javax.swing.border.Border ;
16
17
21 public class GridSplitDivider {
22
23 GridSplitPane splitPane;
24 Rectangle rect = new Rectangle ();
25 GridSplitCell first;
26 GridSplitCell second;
27 int size;
28 static Border border = BorderFactory.createRaisedBevelBorder();
29
30 Point currentDragLocation;
31 int dragMin;
32 int dragMax;
33
34 public GridSplitDivider( GridSplitPane parent, int size, GridSplitCell first, GridSplitCell second ) {
35 assert null != parent;
36 assert null != first;
37 assert null != second;
38 this.splitPane = parent;
39 this.size = size;
40 this.first = first;
41 this.second = second;
42 }
43
44 boolean isHorizontal() {
45 return first.getParent().isHorizontalSplitter();
46 }
47
48 boolean isVertical() {
49 return first.getParent().isVerticalSplitter();
50 }
51
52 int getDividerSize() {
53 if( isHorizontal() )
54 return rect.width;
55 return rect.height;
56 }
57
58 boolean containsPoint( Point p ) {
59 return rect.contains( p );
60 }
61
62 int getSize() {
63 return size;
64 }
65
66 void paint( Graphics g ) {
67 if( first.getParent().isCollapsed() )
68 return;
69
70 border.paintBorder( splitPane, g, rect.x, rect.y, rect.width, rect.height );
71
72 paintCollapseButtons( g );
73
74 if( null != currentDragLocation ) {
75 Color oldColor = g.getColor();
76 g.setColor( Color.BLACK );
77 if( isHorizontal() ) {
78 if( currentDragLocation.x != rect.x ) {
79 g.fillRect( currentDragLocation.x, rect.y, rect.width, rect.height );
80 }
81 } else {
82 if( currentDragLocation.y != rect.y ) {
83 g.fillRect( rect.x, currentDragLocation.y, rect.width, rect.height );
84 }
85 }
86 g.setColor( oldColor );
87 }
88 }
89
90 void paintCollapseButtons( Graphics g ) {
91 Color oldColor = g.getColor();
92
93 g.setColor( Color.RED );
94 Rectangle collapseRect = getCollapseFirstRect();
95 g.fillRect( collapseRect.x, collapseRect.y, collapseRect.width, collapseRect.height );
96
97 g.setColor( Color.GREEN );
98 collapseRect = getCollapseSecondRect();
99 g.fillRect( collapseRect.x, collapseRect.y, collapseRect.width, collapseRect.height );
100
101 g.setColor( oldColor );
102 }
103
104 Rectangle getCollapseFirstRect() {
105 if( first.getParent().isCollapsed() )
106 return new Rectangle ( 0,0,0,0 );
107 Rectangle res = new Rectangle ( rect );
108 if( isHorizontal() ) {
109 res.y += res.width;
110 res.height = 2*res.width;
111 } else {
112 res.x += res.height;
113 res.width = 2*res.height;
114 }
115 return res;
116 }
117
118 Rectangle getCollapseSecondRect() {
119 if( first.getParent().isCollapsed() )
120 return new Rectangle ( 0,0,0,0 );
121 Rectangle res = getCollapseFirstRect();
122 if( isHorizontal() ) {
123 res.y += 4*res.width;
124 } else {
125 res.x += 4*res.height;
126 }
127 return res;
128 }
129
130 void startDragging( Point p ) {
131 currentDragLocation = new Point ( rect.x, rect.y );
132
133 initDragMinMax();
134 }
135
136 void dragTo( Point p ) {
137 if( isHorizontal() ) {
138 if( p.x < dragMin )
139 p.x = dragMin;
140 if( p.x > dragMax )
141 p.x = dragMax;
142 } else {
143 if( p.y < dragMin )
144 p.y = dragMin;
145 if( p.y > dragMax )
146 p.y = dragMax;
147 }
148
149 Point prevDragLocation = currentDragLocation;
150 currentDragLocation = p;
151
152 repaintSplitPane( prevDragLocation );
153 repaintSplitPane( currentDragLocation );
154 }
155
156 private void repaintSplitPane( Point location ) {
157 if( isHorizontal() ) {
158 splitPane.repaint( location.x, rect.y, rect.width, rect.height );
159 } else {
160 splitPane.repaint( rect.x, location.y, rect.width, rect.height );
161 }
162 }
163
164 void finishDraggingTo( Point p ) {
165 if( isHorizontal() ) {
166 if( p.x < dragMin )
167 p.x = dragMin;
168 if( p.x > dragMax )
169 p.x = dragMax;
170 } else {
171 if( p.y < dragMin )
172 p.y = dragMin;
173 if( p.y > dragMax )
174 p.y = dragMax;
175 }
176 currentDragLocation = null;
177
178 int dividerSize = getDividerSize();
179 first.setCollapsed( false );
180 second.setCollapsed( false );
181
182 if( isHorizontal() ) {
183 int delta = p.x - rect.x;
184 Dimension d = first.getDimension( dividerSize );
185 Point location = first.getLocation();
186 d.width += delta;
187 d.height = rect.height;
188 first.resize( d.width, d.height, dividerSize );
189 first.setLocation( location.x, location.y, dividerSize );
190
191 d = second.getDimension( dividerSize );
192 location = second.getLocation();
193 d.width -= delta;
194 d.height = rect.height;
195 location.x += delta;
196 second.resize( d.width, d.height, dividerSize );
197 second.setLocation( location.x, location.y, dividerSize );
198
199 rect.x = p.x;
200 } else {
201 int delta = p.y - rect.y;
202 Dimension d = first.getDimension( dividerSize );
203 Point location = first.getLocation();
204 d.height += delta;
205 d.width = rect.width;
206 first.resize( d.width, d.height, dividerSize );
207 first.setLocation( location.x, location.y, dividerSize );
208
209 d = second.getDimension( dividerSize );
210 location = second.getLocation();
211 d.height -= delta;
212 d.width = rect.width;
213 location.y += delta;
214 second.resize( d.width, d.height, dividerSize );
215 second.setLocation( location.x, location.y, dividerSize );
216
217 rect.y = p.y;
218 }
219 splitPane.validate(); }
221
222 private void initDragMinMax() {
223 Point firstLocation = first.getLocation();
224 int dividerSize = getDividerSize();
225 Dimension firstDim = first.getDimension( dividerSize );
226 Dimension secondDim = second.getDimension( dividerSize );
227 Dimension firstMinSize = first.getMinimumSize( dividerSize );
228 Dimension secondMinSize = second.getMinimumSize( dividerSize );
229
230 if( isHorizontal() ) {
231 dragMin = rect.x;
232 dragMax = rect.x;
233
234 if( firstDim.width >= firstMinSize.width ) {
235 dragMin -= firstDim.width-firstMinSize.width; }
237 if( secondDim.width >= secondMinSize.width ) {
238 dragMax += secondDim.width-secondMinSize.width;
239 }
240 } else {
241 dragMin = rect.y;
242 dragMax = rect.y;
243 if( firstDim.height >= firstMinSize.height ) {
244 dragMin -= firstDim.height-firstMinSize.height; }
246 if( secondDim.height >= secondMinSize.height ) {
247 dragMax += secondDim.height-secondMinSize.height;
248 }
249 }
250 }
251
252 void reshape() {
253 if( first.getParent().isCollapsed() ) {
254 rect.x = 0;
255 rect.y = 0;
256 rect.width = 0;
257 rect.height = 0;
258 return;
259 }
260 Dimension d = first.getParent().getDimension( getDividerSize() );
261 Point location = second.getLocation();
262
263 if( isHorizontal() ) {
264 rect.x = location.x-getSize();
265 rect.y = location.y;
266 rect.width = getSize();
267 rect.height = d.height;
268 } else {
269 rect.x = location.x;
270 rect.y = location.y-getSize();
271 rect.width = d.width;
272 rect.height = getSize();
273 }
274 }
275
276 boolean isOnCollapseButton( Point p ) {
277 return getCollapseFirstRect().contains( p ) || getCollapseSecondRect().contains( p );
278 }
279
280 boolean collapse( Point p ) {
281 Rectangle firstRect = getCollapseFirstRect();
282 Rectangle secondRect = getCollapseSecondRect();
283
284 Dimension d = first.getParent().getDimension( getDividerSize() );
285 Point location = first.getParent().getLocation();
286 boolean res = false;
287 if( firstRect.contains( p ) ) {
288 first.setCollapsed( !first.isCollapsed() );
289 second.setCollapsed( false );
290 res = true;
291 }
292 if( secondRect.contains( p ) ) {
293 second.setCollapsed( !second.isCollapsed() );
294 first.setCollapsed( false );
295 res = true;
296 }
297 if( res ) {
298 splitPane.invalidate();
301 }
302 return res;
303 }
304 }
305 |
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