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1
24 package org.riotfamily.forms.element.upload;
25
26 import java.io.File  ;
27 import java.io.FileInputStream ;
28 import java.io.IOException ;
29 import java.io.PrintWriter ;
30 import java.net.SocketException ;
31
32 import javax.servlet.http.HttpServletRequest ;
33 import javax.servlet.http.HttpServletResponse ;
34
35 import org.devlib.schmidt.imageinfo.ImageInfo;
36 import org.riotfamily.common.image.ImageCropper;
37 import org.riotfamily.common.markup.Html;
38 import org.riotfamily.common.markup.TagWriter;
39 import org.riotfamily.common.web.util.ServletUtils;
40 import org.riotfamily.forms.AbstractElement;
41 import org.riotfamily.forms.ContentElement;
42 import org.riotfamily.forms.DHTMLElement;
43 import org.riotfamily.forms.EditorBinder;
44 import org.riotfamily.forms.Element;
45 import org.riotfamily.forms.ErrorUtils;
46 import org.riotfamily.forms.TemplateUtils;
47 import org.riotfamily.forms.resource.FormResource;
48 import org.riotfamily.forms.resource.ResourceElement;
49 import org.riotfamily.forms.resource.Resources;
50 import org.riotfamily.forms.resource.ScriptResource;
51 import org.springframework.util.FileCopyUtils;
52 import org.springframework.web.bind.ServletRequestUtils;
53
54
57 public class ImageUpload extends FileUpload {
58
59 private static final FormResource PREVIEW_RESOURCE = new ScriptResource(
60 "riot-js/image-cropper.js", "Cropper",
61 Resources.SCRIPTACULOUS_SLIDER);
62
63 private int[] widths;
64
65 private int[] heights;
66
67 private int minWidth;
68
69 private int maxWidth;
70
71 private int minHeight;
72
73 private int maxHeight;
74
75 private String validFormats = "GIF,JPEG,PNG";
76
77 private String widthProperty;
78
79 private String heightProperty;
80
81 private ImageInfo info;
82
83 private ImageCropper cropper;
84
85 private boolean crop = true;
86
87 private File originalFile;
88
89 private File croppedFile;
90
91 public ImageUpload() {
92 }
93
94 protected Element createPreviewElement() {
95 return new PreviewElement();
96 }
97
98 public void setCropper(ImageCropper cropper) {
99 this.cropper = cropper;
100 }
101
102 public void setCrop(boolean crop) {
103 this.crop = crop;
104 }
105
106 public void setWidths(int[] widths) {
107 this.widths = widths;
108 if (widths != null) {
109 int min = Integer.MAX_VALUE;
110 int max = 0;
111 for (int i = 0; i < widths.length; i++) {
112 min = Math.min(min, widths[i]);
113 max = Math.max(max, widths[i]);
114 }
115 setMinWidth(min);
116 setMaxWidth(max);
117 }
118 }
119
120 public void setWidth(int width) {
121 setWidths(new int[] { width });
122 }
123
124 public void setHeights(int[] heights) {
125 this.heights = heights;
126 if (heights != null) {
127 int min = Integer.MAX_VALUE;
128 int max = 0;
129 for (int i = 0; i < heights.length; i++) {
130 min = Math.min(min, heights[i]);
131 max = Math.max(max, heights[i]);
132 }
133 setMinHeight(min);
134 setMaxHeight(max);
135 }
136 }
137
138 public void setHeight(int height) {
139 setHeights(new int[] {height});
140 }
141
142 public void setMinWidth(int minWidth) {
143 this.minWidth = minWidth;
144 }
145
146 public void setMaxWidth(int maxWidth) {
147 this.maxWidth = maxWidth;
148 }
149
150 public void setMinHeight(int minHeight) {
151 this.minHeight = minHeight;
152 }
153
154 public void setMaxHeight(int maxHeight) {
155 this.maxHeight = maxHeight;
156 }
157
158 public void setValidFormats(String validFormats) {
159 this.validFormats = validFormats;
160 }
161
162 public String getHeightProperty() {
163 return this.heightProperty;
164 }
165
166 public void setHeightProperty(String heightProperty) {
167 this.heightProperty = heightProperty;
168 }
169
170 public String getWidthProperty() {
171 return this.widthProperty;
172 }
173
174 public void setWidthProperty(String widthProperty) {
175 this.widthProperty = widthProperty;
176 }
177
178 public boolean isPreviewAvailable() {
179 return true;
180 }
181
182 protected void cropImage(int width, int height, int x, int y,
183 int scaledWidth) throws IOException {
184
185 if (croppedFile == null) {
186 croppedFile = File.createTempFile("000", ".tmp");
187 }
188 if (originalFile == null) {
189 originalFile = getFile();
190 }
191 cropper.cropImage(originalFile, croppedFile, width, height, x, y,
192 scaledWidth);
193
194 setFile(croppedFile);
195 }
196
197 protected void afterFileUploaded() {
198 originalFile = getFile();
199 }
200
201 protected void undoCrop() {
202 setFile(originalFile);
203 }
204
205 protected void destroy() {
206 super.destroy();
207 if (croppedFile != null && !croppedFile.equals(getReturnedFile())) {
208 croppedFile.delete();
209 }
210 }
211
212 protected void validateFile(File file) {
213 try {
214 info = new ImageInfo();
215 info.setInput(new FileInputStream (file));
216 info.check();
217 log.debug(info.getFormatName() + " Size: "
218 + info.getWidth() + "x" + info.getHeight());
219
220 if (validFormats != null) {
221 if (validFormats.indexOf(info.getFormatName()) == -1) {
222 ErrorUtils.reject(this, "image.invalidFormat",
223 new Object [] { validFormats, info.getFormatName() });
224 }
225 }
226 int imageHeight = info.getHeight();
227 int imageWidth = info.getWidth();
228
229 if (widths != null) {
230 boolean match = false;
231 for (int i = 0; i < widths.length; i++) {
232 if (imageWidth == widths[i]) {
233 match = true;
234 break;
235 }
236 }
237 if (!match) {
238 ErrorUtils.reject(this, "image.size.mismatch");
239 return;
240 }
241 }
242 else if (imageWidth < minWidth || (maxWidth > 0 && imageWidth > maxWidth)) {
243 ErrorUtils.reject(this, "image.size.mismatch");
244 return;
245 }
246
247 if (heights != null) {
248 boolean match = false;
249 for (int i = 0; i < heights.length; i++) {
250 if (imageHeight == heights[i]) {
251 match = true;
252 break;
253 }
254 }
255 if (!match) {
256 ErrorUtils.reject(this, "image.size.mismatch");
257 }
258 }
259 else if (imageHeight < minHeight || (maxHeight > 0 && imageHeight > maxHeight)) {
260 ErrorUtils.reject(this, "image.size.mismatch");
261 }
262 }
263 catch (IOException e) {
264 }
265 }
266
267 public Object getValue() {
268 if (info != null) {
269 EditorBinder editorBinder = getEditorBinding().getEditorBinder();
270 if (widthProperty != null) {
271 editorBinder.setPropertyValue(widthProperty,
272 new Integer (info.getWidth()));
273 }
274 if (heightProperty != null) {
275 editorBinder.setPropertyValue(heightProperty,
276 new Integer (info.getHeight()));
277 }
278 }
279 return super.getValue();
280 }
281
282 public class PreviewElement extends AbstractElement
283 implements ContentElement, DHTMLElement, ResourceElement {
284
285 public FormResource getResource() {
286 return PREVIEW_RESOURCE;
287 }
288
289 protected void renderInternal(PrintWriter writer) {
290 int w = crop && maxWidth > 0 ? maxWidth : 263;
291 int h = (maxHeight > 0 ? maxHeight : 100) + 50;
292 new TagWriter(writer).start(Html.DIV)
293 .attribute(Html.COMMON_ID, getId())
294 .attribute(Html.COMMON_STYLE,
295 "width:" + w + "px;height:" + h + "px")
296 .end();
297 }
298
299 private int getIntParameter(HttpServletRequest request, String name) {
300 return ServletRequestUtils.getIntParameter(request, name, 0);
301 }
302
303 public void handleContentRequest(HttpServletRequest request,
304 HttpServletResponse response) throws IOException {
305
306 if (isPresent()) {
307 if ("crop".equals(request.getParameter("action"))) {
308 cropImage(
309 getIntParameter(request, "width"),
310 getIntParameter(request, "height"),
311 getIntParameter(request, "x"),
312 getIntParameter(request, "y"),
313 getIntParameter(request, "scaledWidth"));
314
315 response.getWriter().print(getCroppedImageUrl());
316 }
317 else if ("undo".equals(request.getParameter("action"))) {
318 undoCrop();
319 }
320 else {
321 ServletUtils.setNoCacheHeaders(response);
322 response.setHeader("Content-Type", getContentType());
323 response.setContentLength(getSize().intValue());
324
325 try {
326 FileCopyUtils.copy(new FileInputStream (getFile()),
328 response.getOutputStream());
329 }
330 catch (IOException e) {
331 if (!SocketException .class.isInstance(e.getCause())) {
333 throw e;
334 }
335 }
336 }
337 }
338 else {
339 response.sendError(HttpServletResponse.SC_NO_CONTENT);
340 }
341 }
342
343 public String getImageUrl() {
344 if (isPresent()) {
345 return getFormContext().getContentUrl(this)
346 + "&time=" + System.currentTimeMillis();
347 }
348 return null;
349 }
350
351 public String getCropUrl() {
352 if (cropper != null && crop) {
353 return getFormContext().getContentUrl(this) + "&action=crop";
354 }
355 return null;
356 }
357
358 public String getUndoUrl() {
359 if (cropper != null && crop) {
360 return getFormContext().getContentUrl(this) + "&action=undo";
361 }
362 return null;
363 }
364
365 public String getCroppedImageUrl() {
366 return getFormContext().getContentUrl(this)
367 + "&cropped=true&time=" + System.currentTimeMillis();
368 }
369
370 public String getInitScript() {
371 return TemplateUtils.getInitScript(this);
372 }
373
374 public int getMinWidth() {
375 return minWidth;
376 }
377
378 public int getMaxWidth() {
379 return maxWidth;
380 }
381
382 public int getMinHeight() {
383 return minHeight;
384 }
385
386 public int getMaxHeight() {
387 return maxHeight;
388 }
389
390 public int[] getWidths() {
391 return widths;
392 }
393
394 public int[] getHeights() {
395 return heights;
396 }
397
398 }
399
400 }
401 |
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