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1
21
22 package com.sshtools.ui.swing;
23
24 import java.awt.BorderLayout  ;
25 import java.awt.Color ;
26 import java.awt.Component ;
27 import java.awt.Dimension ;
28 import java.awt.FlowLayout ;
29 import java.awt.Graphics ;
30 import java.awt.Image ;
31 import java.awt.Insets ;
32 import java.awt.event.ActionEvent ;
33 import java.awt.event.ActionListener ;
34 import java.awt.image.BufferedImage ;
35 import java.awt.print.PageFormat ;
36 import java.awt.print.Printable ;
37 import java.awt.print.PrinterException ;
38 import java.awt.print.PrinterJob ;
39 import javax.swing.JButton ;
40 import javax.swing.JComboBox ;
41 import javax.swing.JLabel ;
42 import javax.swing.JPanel ;
43 import javax.swing.JScrollPane ;
44 import javax.swing.border.MatteBorder ;
45
46
51 public class PrintPreview extends JPanel implements ActionListener , Runnable {
52
53 protected PrinterJob job;
54
55
56 protected JButton setup;
57
58
59 protected JComboBox scale;
60
61
62 protected int pageWidth;
63
64
65 protected Printable printable;
66
67
68 protected PreviewContainer previewer;
69
70
71 protected PageFormat pageFormat;
72
73
74 protected int pageHeight;
75
76
77 protected JScrollPane scrollpane;
78
79
85 public PrintPreview(Printable printable, PageFormat pageFormat) {
86 super(new BorderLayout ());
87 this.printable = printable;
88 job = PrinterJob.getPrinterJob();
89 this.pageFormat = pageFormat;
90
91 JPanel jpanel = new JPanel (new FlowLayout (0, 2, 2));
92 setup = new JButton ("Setup");
93 setup.addActionListener(this);
94 setup.setMnemonic('p');
95 jpanel.add(setup);
96
97 String [] as = { "10 %", "25 %", "50 %", "75 %", "100 %", "200 %" };
98 scale = new JComboBox (as);
99 scale.setSelectedItem(as[2]);
100 scale.addActionListener(this);
101 scale.setEditable(true);
102 jpanel.add(scale);
103 add(jpanel, BorderLayout.NORTH);
104 previewer = new PreviewContainer();
105
106 if ((pageFormat.getHeight() == 0.0D) || (pageFormat.getWidth() == 0.0D)) {
107 return;
108 }
109
110 pageWidth = (int) pageFormat.getWidth();
111 pageHeight = (int) pageFormat.getHeight();
112
113 byte byte0 = 50;
114 int i = (pageWidth * byte0) / 100;
115 int j = (pageHeight * byte0) / 100;
116 int k = 0;
117
118 try {
119 do {
120 BufferedImage bufferedimage = new BufferedImage (pageWidth, pageHeight, 1);
121 Graphics g = bufferedimage.getGraphics();
122 g.setColor(Color.white);
123 g.fillRect(0, 0, pageWidth, pageHeight);
124
125 if (printable.print(g, pageFormat, k) != 0) {
126 break;
127 }
128
129 PagePreview pagepreview = new PagePreview(i, j, bufferedimage);
130 previewer.add(pagepreview);
131 k++;
132 } while (true);
133 } catch (PrinterException printerexception) {
134 }
135
136 scrollpane = new JScrollPane (previewer);
137 add(scrollpane, BorderLayout.CENTER);
138 }
139
140
145 public PageFormat getPageFormat() {
146 return pageFormat;
147 }
148
149 private void setup() {
150 pageFormat = job.pageDialog(pageFormat);
151 pageWidth = (int) pageFormat.getWidth();
152 pageHeight = (int) pageFormat.getHeight();
153
154 Thread thread = new Thread (this);
155 thread.start();
156 }
157
158
161 public void run() {
162 String s = scale.getSelectedItem().toString();
163 scrollpane.setViewportView(new JLabel ("Resizing"));
164
165 if (s.endsWith("%")) {
166 s = s.substring(0, s.length() - 1);
167 }
168
169 s = s.trim();
170
171 int i = 0;
172
173 try {
174 i = Integer.parseInt(s);
175 } catch (NumberFormatException numberformatexception) {
176 i = 100;
177 }
178
179 int j = (pageWidth * i) / 100;
180 int k = (pageHeight * i) / 100;
181 Component [] acomponent = previewer.getComponents();
182
183 for (int l = 0; l < acomponent.length; l++) {
184 if (acomponent[l] instanceof PagePreview) {
185 PagePreview pagepreview = (PagePreview) acomponent[l];
186 pagepreview.setScaledSize(j, k);
187 }
188 }
189
190 scrollpane.setViewportView(previewer);
191 }
192
193
198 public void actionPerformed(ActionEvent actionevent) {
199 if (actionevent.getSource() == setup) {
200 setup();
201 } else if (actionevent.getSource() == scale) {
202 Thread thread = new Thread (this);
203 thread.start();
204 }
205 }
206
207 class PagePreview extends JPanel {
208 protected int m_h;
209 protected int m_w;
210 protected Image m_img;
211 protected Image m_source;
212
213 public PagePreview(int i, int j, Image image) {
214 m_w = i;
215 m_h = j;
216 m_source = image;
217 m_img = m_source.getScaledInstance(m_w, m_h, 4);
218 m_img.flush();
219 setBackground(Color.white);
220 setBorder(new MatteBorder (1, 1, 2, 2, Color.black));
221 }
222
223 public Dimension getMaximumSize() {
224 return getPreferredSize();
225 }
226
227 public Dimension getPreferredSize() {
228 Insets insets = getInsets();
229
230 return new Dimension (m_w + insets.left + insets.right, m_h + insets.top + insets.bottom);
231 }
232
233 public void paint(Graphics g) {
234 g.setColor(getBackground());
235 g.fillRect(0, 0, getWidth(), getHeight());
236 g.drawImage(m_img, 0, 0, this);
237 paintBorder(g);
238 }
239
240 public Dimension getMinimumSize() {
241 return getPreferredSize();
242 }
243
244 public void setScaledSize(int i, int j) {
245 m_w = i;
246 m_h = j;
247 m_img = m_source.getScaledInstance(m_w, m_h, 4);
248 repaint();
249 }
250 }
251
252 class PreviewContainer extends JPanel {
253 protected int V_GAP;
254 protected int H_GAP;
255
256 PreviewContainer() {
257 V_GAP = 10;
258 H_GAP = 16;
259 }
260
261 public Dimension getMaximumSize() {
262 return getPreferredSize();
263 }
264
265 public void doLayout() {
266 Insets insets = getInsets();
267 int i = insets.left + H_GAP;
268 int j = insets.top + V_GAP;
269 int k = getComponentCount();
270
271 if (k == 0) {
272 return;
273 }
274
275 Component component = getComponent(0);
276 Dimension dimension = component.getPreferredSize();
277 int l = dimension.width;
278 int i1 = dimension.height;
279 Dimension dimension1 = getParent().getSize();
280 int j1 = Math.max((dimension1.width - H_GAP) / (l + H_GAP), 1);
281 int k1 = k / j1;
282
283 if ((k1 * j1) < k) {
284 k1++;
285 }
286
287 int l1 = 0;
288
289 for (int i2 = 0; i2 < k1; i2++) {
290 for (int j2 = 0; j2 < j1; j2++) {
291 if (l1 >= k) {
292 return;
293 }
294
295 Component component1 = getComponent(l1++);
296 component1.setBounds(i, j, l, i1);
297 i += (l + H_GAP);
298 }
299
300 j += (i1 + V_GAP);
301 i = insets.left + H_GAP;
302 }
303 }
304
305 public Dimension getMinimumSize() {
306 return getPreferredSize();
307 }
308
309 public Dimension getPreferredSize() {
310 int i = getComponentCount();
311
312 if (i == 0) {
313 return new Dimension (H_GAP, V_GAP);
314 }
315
316 Component component = getComponent(0);
317 Dimension dimension = component.getPreferredSize();
318 int j = dimension.width;
319 int k = dimension.height;
320 Dimension dimension1 = getParent().getSize();
321 int l = Math.max((dimension1.width - H_GAP) / (j + H_GAP), 1);
322 int i1 = i / l;
323
324 if ((i1 * l) < i) {
325 i1++;
326 }
327
328 int j1 = (l * (j + H_GAP)) + H_GAP;
329 int k1 = (i1 * (k + V_GAP)) + V_GAP;
330 Insets insets = getInsets();
331
332 return new Dimension (j1 + insets.left + insets.right, k1 + insets.top + insets.bottom);
333 }
334 }
335 }
336 |
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