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1
19
20 package swingwtx.custom.layout;
21
22 import swingwt.awt.*;
23
24
30 public class TableLayout implements LayoutManager, java.io.Serializable  {
31
32 int hgap = 4;
33 int vgap = 4;
34 int rows;
35 int cols;
36
40 boolean leftToRight = true;
41
42 public TableLayout() {
43 this(1, 0, 4, 4);
44 }
45
46 public TableLayout(int rows, int cols) {
47 this(rows, cols, 4, 4, true);
48 }
49
50 public TableLayout(int rows, int cols, boolean leftToRight) {
51 this(rows, cols, 4, 4, leftToRight);
52 }
53
54 public TableLayout(int rows, int cols, int hgap, int vgap) {
55 this(rows, cols, hgap, vgap, true);
56 }
57
58 public TableLayout(int rows, int cols, int hgap, int vgap, boolean leftToRight) {
59 if ((rows == 0) && (cols == 0)) {
60 throw new IllegalArgumentException ("rows and cols cannot both be zero");
61 }
62 this.rows = rows;
63 this.cols = cols;
64 this.hgap = hgap;
65 this.vgap = vgap;
66 this.leftToRight = leftToRight;
67 }
68
69 public int getRows() {
70 return rows;
71 }
72
73 public void setRows(int rows) {
74 if ((rows == 0) && (this.cols == 0)) {
75 throw new IllegalArgumentException ("rows and cols cannot both be zero");
76 }
77 this.rows = rows;
78 }
79
80 public int getColumns() {
81 return cols;
82 }
83
84 public void setColumns(int cols) {
85 if ((cols == 0) && (this.rows == 0)) {
86 throw new IllegalArgumentException ("rows and cols cannot both be zero");
87 }
88 this.cols = cols;
89 }
90
91 public int getHgap() {
92 return hgap;
93 }
94
95 public void setHgap(int hgap) {
96 this.hgap = hgap;
97 }
98
99 public int getVgap() {
100 return vgap;
101 }
102
103 public void setVgap(int vgap) {
104 this.vgap = vgap;
105 }
106
107 public void addLayoutComponent(String name, Component comp) {
108 }
109
110 public void removeLayoutComponent(Component comp) {
111 }
112
113 public Dimension preferredLayoutSize(Container parent) {
114 Insets insets = parent.getInsets();
115 int ncomponents = parent.getComponentCount();
116 int nrows = rows;
117 int ncols = cols;
118
119 if (nrows > 0) {
120 ncols = (ncomponents + nrows - 1) / nrows;
121 } else {
122 nrows = (ncomponents + ncols - 1) / ncols;
123 }
124 int w = 0;
125 int h = 0;
126 for (int i = 0; i < ncomponents; i++) {
127 Component comp = parent.getComponent(i);
128 Dimension d = comp.getPreferredSize();
129 if (w < d.width) {
130 w = d.width;
131 }
132 if (h < d.height) {
133 h = d.height;
134 }
135 }
136 return new Dimension(
137 insets.left + insets.right + ncols * w + (ncols - 1) * hgap,
138 insets.top + insets.bottom + nrows * h + (nrows - 1) * vgap);
139 }
140
141 public Dimension minimumLayoutSize(Container parent) {
142 Insets insets = parent.getInsets();
143 int ncomponents = parent.getComponentCount();
144 int nrows = rows;
145 int ncols = cols;
146
147 if (nrows > 0) {
148 ncols = (ncomponents + nrows - 1) / nrows;
149 } else {
150 nrows = (ncomponents + ncols - 1) / ncols;
151 }
152 int w = 0;
153 int h = 0;
154 for (int i = 0; i < ncomponents; i++) {
155 Component comp = parent.getComponent(i);
156 Dimension d = comp.getMinimumSize();
157 if (w < d.width) {
158 w = d.width;
159 }
160 if (h < d.height) {
161 h = d.height;
162 }
163 }
164 return new Dimension(
165 insets.left + insets.right + ncols * w + (ncols - 1) * hgap,
166 insets.top + insets.bottom + nrows * h + (nrows - 1) * vgap);
167 }
168
169 public void layoutContainer(Container parent) {
170
171 Insets insets = parent.getInsets();
172 int ncomponents = parent.getComponentCount();
173 int nrows = rows;
174 int ncols = cols;
175
176 if (ncomponents == 0) {
177 return;
178 }
179
180 if (leftToRight) {
181 int[] maxWidths = new int[(cols)];
184
185 int cc = 0; for (int i = 0; i < ncomponents; i++) {
187 int cw = parent.getComponent(i).getPreferredSize().width;
188 if (cw > maxWidths[cc])
189 maxWidths[cc] = cw;
190 cc++;
191 if (cc == cols) cc = 0;
192 }
193
194 int[] colPoints = new int[(cols)];
197 for (int i = 0; i < cols; i++) {
198 if (i != 0)
199 colPoints[i] = colPoints[i-1] + hgap + maxWidths[i-1];
200 else
201 colPoints[i] = hgap;
202 }
203
204 cc = 0;
205 int highestInRow = 0;
206 int curRowPos = 0;
207 for (int i = 0; i < parent.getComponentCount(); i++) {
208 parent.getComponent(i).setBounds(
209 colPoints[cc],
210 curRowPos,
211 parent.getComponent(i).getPreferredSize().width,
212 parent.getComponent(i).getPreferredSize().height
213 );
214 if (parent.getComponent(i).getPreferredSize().height > highestInRow)
215 highestInRow = parent.getComponent(i).getPreferredSize().height;
216 cc++;
217 if (cc == cols) {
218 cc = 0;
219 curRowPos += highestInRow + vgap;
222 highestInRow = 0;
223 }
224 }
225 }
226 else {
227
228
231 int totRows = parent.getHeight() / (parent.getComponent(0).getPreferredSize().height + vgap);
235
236 int[] maxWidths = new int[(cols * 2)];
239
240 int cr = 0; int cc = 0; for (int i = 0; i < ncomponents; i++) {
243 int ch = parent.getComponent(i).getPreferredSize().width;
244 if (ch > maxWidths[cc])
245 maxWidths[cc] = ch;
246 cr++;
247 if (cr == totRows) { cr = 0; cc++; }
248 }
249 if (cols < cc) cols = cc;
252
253 int[] colPoints = new int[(cols * 2)];
256 for (int i = 0; i < cols; i++) {
257 if (i != 0)
258 colPoints[i] = colPoints[i-1] + hgap + maxWidths[i-1];
259 else
260 colPoints[i] = hgap;
261 }
262
263 cc = 0;
264 int curRowPos = 0;
265 cr = 0;
266 for (int i = 0; i < parent.getComponentCount(); i++) {
267 parent.getComponent(i).setBounds(
268 colPoints[cc],
269 curRowPos,
270 parent.getComponent(i).getPreferredSize().width,
271 parent.getComponent(i).getPreferredSize().height
272 );
273 cr++;
274
275 curRowPos += parent.getComponent(i).getPreferredSize().height + vgap;
277
278 if (cr == totRows) {
279 cr = 0;
280 curRowPos = 0;
281 cc++;
282 }
283 }
284 }
285 }
286 }
287 |
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