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1 /* This file is part of
2  * ====================================================== 
3  *
4  *           LyX, The Document Processor
5  *
6  *           Copyright 2000-2001 The LyX Team.
7  *
8  * ======================================================
9  *
10  * \file FormGraphics.C
11  * \author Baruch Even, baruch.even@writeme.com
12  * \author Herbert Voss, voss@perce.de
13  */
14
15 #include <config.h> 
16
17 #ifdef __GNUG__
18 #pragma implementation
19 #endif 
20
21 #include "xformsBC.h"
22 #include "ControlGraphics.h"
23 #include "FormGraphics.h"
24 #include "form_graphics.h"
25
26 #include "xforms_helpers.h"
27 #include "input_validators.h"
28 #include "debug.h" // for lyxerr
29 #include "support/lstrings.h"  // for strToDbl & tostr
30 #include "support/FileInfo.h"
31 #include "support/filetools.h"  // for MakeAbsPath etc
32 #include "insets/insetgraphicsParams.h"
33 #include "lyxrc.h" // for lyxrc.display_graphics
34
35 using std::endl;
36
37 namespace {
38
39 // Bound the number of input characters
40 int const SCALE_MAXDIGITS = 3;
41 int const WIDTH_MAXDIGITS = 10;
42 int const HEIGHT_MAXDIGITS = 10;
43 int const ROTATE_MAXCHARS = 4;
44 int const FILENAME_MAXCHARS = 1024;
45 string defaultUnit = "cm"; 
46  
47 } // namespace anon
48
49
50 typedef FormCB<ControlGraphics, FormDB<FD_form_graphics> > base_class;
51
52 FormGraphics::FormGraphics(ControlGraphics & c)
53         : base_class(c, _("Graphics"), false)
54 {}
55
56
57 void FormGraphics::redraw()
58 {
59         if(form() && form()->visible)
60                 fl_redraw_form(form());
61         else
62                 return;
63         FL_FORM * outer_form = fl_get_active_folder(dialog_->tabFolder);
64         if (outer_form && outer_form->visible)
65                 fl_redraw_form(outer_form);
66 }
67
68
69 void FormGraphics::build()
70 {
71         dialog_.reset(build_graphics());
72
73         // Manage the ok, apply, restore and cancel/close buttons
74         bc().setOK(dialog_->button_ok);
75         bc().setApply(dialog_->button_apply);
76         bc().setCancel(dialog_->button_cancel);
77         bc().setRestore(dialog_->button_restore);
78
79         // the file section
80         file_.reset(build_file());
81
82         fl_set_input_return (file_->input_filename, FL_RETURN_CHANGED);
83         fl_set_input_return (file_->input_subcaption, FL_RETURN_CHANGED);
84         fl_set_input_return (file_->input_rotate_angle, FL_RETURN_CHANGED);
85         fl_set_input_maxchars(file_->input_filename,  FILENAME_MAXCHARS);
86         fl_set_input_maxchars(file_->input_rotate_angle, ROTATE_MAXCHARS);
87         fl_set_input_filter(file_->input_rotate_angle, fl_float_filter);
88
89         string const choice_origin = 
90             "center|"                                   // c
91             "leftTop|leftBottom|leftBaseline|"          // lt lb lB
92             "centerTop|centerBottom|centerBaseline|"    // ct cb cB
93             "rightTop|rightBottom|rightBaseline";       // rt rb rB
94         fl_addto_choice(file_->choice_origin, choice_origin.c_str());
95
96         bc().addReadOnly(file_->button_browse);
97         bc().addReadOnly(file_->check_subcaption);
98         bc().addReadOnly(file_->check_rotate);
99         bc().addReadOnly(file_->button_draft);
100         bc().addReadOnly(file_->button_nounzip);
101
102         // the lyxview section
103         lyxview_.reset(build_lyxview());
104
105         fl_set_input_return (lyxview_->input_lyxwidth, FL_RETURN_CHANGED);
106         fl_set_input_return (lyxview_->input_lyxheight, FL_RETURN_CHANGED);
107         fl_set_input_return (lyxview_->input_lyxscale, FL_RETURN_CHANGED);
108
109         fl_addto_choice(lyxview_->choice_width_lyxwidth, choice_Length_WithUnit.c_str());
110         fl_addto_choice(lyxview_->choice_width_lyxheight, choice_Length_WithUnit.c_str());
111
112         bc().addReadOnly(lyxview_->radio_pref);
113         bc().addReadOnly(lyxview_->radio_mono);
114         bc().addReadOnly(lyxview_->radio_gray);
115         bc().addReadOnly(lyxview_->radio_color);
116         bc().addReadOnly(lyxview_->radio_nodisplay);
117
118         // the size section
119         size_.reset(build_size());
120
121         fl_set_input_return (size_->input_scale, FL_RETURN_CHANGED);
122         fl_set_input_return (size_->input_width, FL_RETURN_CHANGED);
123         fl_set_input_return (size_->input_height, FL_RETURN_CHANGED);
124
125         fl_set_input_maxchars(size_->input_scale, SCALE_MAXDIGITS);
126         fl_set_input_maxchars(size_->input_width, WIDTH_MAXDIGITS);
127         fl_set_input_maxchars(size_->input_height, HEIGHT_MAXDIGITS);
128
129         fl_set_input_filter(size_->input_scale,  fl_unsigned_float_filter);
130
131         fl_addto_choice(size_->choice_width_units, choice_Length_All.c_str());
132         fl_addto_choice(size_->choice_height_units, choice_Length_All.c_str());
133
134         bc().addReadOnly(size_->button_asis);
135         bc().addReadOnly(size_->button_wh);
136         bc().addReadOnly(size_->button_scale);
137         bc().addReadOnly(size_->check_aspectratio);
138
139         // the bounding box selection
140         bbox_.reset(build_bbox());
141         fl_set_input_return (bbox_->input_bb_x0, FL_RETURN_CHANGED);
142         fl_set_input_return (bbox_->input_bb_y0, FL_RETURN_CHANGED);
143         fl_set_input_return (bbox_->input_bb_x1, FL_RETURN_CHANGED);
144         fl_set_input_return (bbox_->input_bb_y1, FL_RETURN_CHANGED);
145
146         string const bb_units = "pt|cm|in";
147         fl_addto_choice(bbox_->choice_bb_units, bb_units.c_str());
148         bc().addReadOnly(bbox_->button_getBB);
149         bc().addReadOnly(bbox_->button_clip);
150
151         // the rotate section
152         special_.reset(build_special());
153
154         fl_set_input_return (special_->input_special, FL_RETURN_CHANGED);
155
156         // add the different tabfolders
157         fl_addto_tabfolder(dialog_->tabFolder, _("File"), file_->form);
158         fl_addto_tabfolder(dialog_->tabFolder, _("LyX View"), lyxview_->form);
159         fl_addto_tabfolder(dialog_->tabFolder, _("LaTeX Size"), size_->form);
160         fl_addto_tabfolder(dialog_->tabFolder, _("Bounding Box"), bbox_->form);
161         fl_addto_tabfolder(dialog_->tabFolder, _("Extras"), special_->form);
162 }
163
164
165 void FormGraphics::apply()
166 {
167         // Create the parameters structure and fill the data from the dialog.
168         InsetGraphicsParams & igp = controller().params();
169
170         // the file section
171         igp.filename = getStringFromInput(file_->input_filename);
172         igp.subcaption = fl_get_button(file_->check_subcaption);
173         igp.subcaptionText = getStringFromInput(file_->input_subcaption);
174         igp.rotate = fl_get_button(file_->check_rotate);
175         igp.rotateAngle =
176                 strToDbl(getStringFromInput(file_->input_rotate_angle));
177         while (igp.rotateAngle < 0.0 || igp.rotateAngle > 360.0) {
178                 if (igp.rotateAngle < 0.0) {
179                         igp.rotateAngle += 360.0;
180                 } else if (igp.rotateAngle > 360.0) {
181                         igp.rotateAngle -= 360.0;
182                 }
183         }
184         if (fl_get_choice(file_->choice_origin) > 0)
185             igp.rotateOrigin = fl_get_choice_text(file_->choice_origin);
186         else
187             igp.rotateOrigin = string();
188         igp.draft = fl_get_button(file_->button_draft);
189         igp.noUnzip = fl_get_button(file_->button_nounzip);
190
191         // the lyxview section
192         if (fl_get_button(lyxview_->radio_pref))
193             igp.display = InsetGraphicsParams::DEFAULT;
194         else if (fl_get_button(lyxview_->radio_mono))
195             igp.display = InsetGraphicsParams::MONOCHROME;
196         else if (fl_get_button(lyxview_->radio_gray))
197             igp.display = InsetGraphicsParams::GRAYSCALE;
198         else if (fl_get_button(lyxview_->radio_color))
199             igp.display = InsetGraphicsParams::COLOR;
200         else if (fl_get_button(lyxview_->radio_nodisplay))
201             igp.display = InsetGraphicsParams::NONE;
202
203         if (fl_get_button(lyxview_->button_lyxasis))
204             igp.lyxsize_type = InsetGraphicsParams::DEFAULT_SIZE;
205         else if (fl_get_button(lyxview_->button_lyxwh))
206             igp.lyxsize_type = InsetGraphicsParams::WH;
207         else
208             igp.lyxsize_type = InsetGraphicsParams::SCALE;
209         igp.lyxwidth = LyXLength(getLengthFromWidgets(lyxview_->input_lyxwidth,
210                 lyxview_->choice_width_lyxwidth));
211         igp.lyxheight = LyXLength(getLengthFromWidgets(lyxview_->input_lyxheight,
212                 lyxview_->choice_width_lyxheight));
213         igp.lyxscale = strToInt(getStringFromInput(lyxview_->input_lyxscale));
214
215         // the size section
216         if (fl_get_button(size_->button_asis))
217             igp.size_type = InsetGraphicsParams::DEFAULT_SIZE;
218         else if (fl_get_button(size_->button_wh))
219             igp.size_type = InsetGraphicsParams::WH;
220         else
221             igp.size_type = InsetGraphicsParams::SCALE;
222         igp.width = LyXLength(getLengthFromWidgets(size_->input_width,
223                 size_->choice_width_units));
224         igp.height = LyXLength(getLengthFromWidgets(size_->input_height,
225                 size_->choice_height_units));
226         igp.scale = strToInt(getStringFromInput(size_->input_scale));
227         igp.keepAspectRatio = fl_get_button(size_->check_aspectratio);
228
229         // the bb section
230         if (!controller().bbChanged)            // different to the original one?
231             igp.bb = string();                  // don't write anything     
232         else {
233             string bb;
234             if (getStringFromInput(bbox_->input_bb_x0).empty())
235                 bb = "0 ";
236             else
237                 bb = getLengthFromWidgets(bbox_->input_bb_x0,
238                         bbox_->choice_bb_units)+" ";
239             if (getStringFromInput(bbox_->input_bb_y0).empty())
240                 bb += "0 ";
241             else
242                 bb += (getLengthFromWidgets(bbox_->input_bb_y0,
243                         bbox_->choice_bb_units)+" ");
244             if (getStringFromInput(bbox_->input_bb_x1).empty())
245                 bb += "0 ";
246             else
247                 bb += (getLengthFromWidgets(bbox_->input_bb_x1,
248                         bbox_->choice_bb_units)+" ");
249             if (getStringFromInput(bbox_->input_bb_y1).empty())
250                 bb += "0 ";
251             else
252                 bb += (getLengthFromWidgets(bbox_->input_bb_y1,
253                         bbox_->choice_bb_units)+" ");
254             igp.bb = bb;
255         }
256         igp.clip = fl_get_button(bbox_->button_clip);
257
258         // the special section
259         igp.special = getStringFromInput(special_->input_special);
260 }
261
262
263 void FormGraphics::update() {   
264         if (lyxrc.default_papersize < 3)
265             defaultUnit = string("in"); 
266         // Update dialog with details from inset
267         InsetGraphicsParams & igp = controller().params();
268
269         // the file section
270         fl_set_input(file_->input_filename, igp.filename.c_str());
271         fl_set_button(file_->check_subcaption, igp.subcaption);
272         fl_set_input(file_->input_subcaption, igp.subcaptionText.c_str());
273         setEnabled(file_->input_subcaption,
274                    fl_get_button(file_->check_subcaption));
275         fl_set_button(file_->check_rotate, igp.rotate);
276         fl_set_input(file_->input_rotate_angle,
277                      tostr(igp.rotateAngle).c_str());
278         if (igp.rotateOrigin.empty())
279             fl_set_choice(file_->choice_origin,0);
280         else
281             fl_set_choice_text(file_->choice_origin,igp.rotateOrigin.c_str());
282         setEnabled(file_->input_rotate_angle,
283                    fl_get_button(file_->check_rotate));
284         setEnabled(file_->choice_origin,
285                    fl_get_button(file_->check_rotate));
286         fl_set_button(file_->button_draft, igp.draft);
287         fl_set_button(file_->button_nounzip, igp.noUnzip);
288
289         // the lyxview section
290         switch (igp.display) {
291         case InsetGraphicsParams::DEFAULT:
292                 fl_set_button(lyxview_->radio_pref, 1);
293                 break;
294         case InsetGraphicsParams::MONOCHROME:
295                 fl_set_button(lyxview_->radio_mono, 1);
296                 break;
297         case InsetGraphicsParams::GRAYSCALE:
298                 fl_set_button(lyxview_->radio_gray, 1);
299                 break;
300         case InsetGraphicsParams::COLOR:
301                 fl_set_button(lyxview_->radio_color, 1);
302                 break;
303         case InsetGraphicsParams::NONE:
304                 fl_set_button(lyxview_->radio_nodisplay, 1);
305                 break;
306         }
307         updateWidgetsFromLength(lyxview_->input_lyxwidth,
308                 lyxview_->choice_width_lyxwidth, igp.lyxwidth,defaultUnit);
309         updateWidgetsFromLength(lyxview_->input_lyxheight,
310                 lyxview_->choice_width_lyxheight, igp.lyxheight,defaultUnit);
311         fl_set_input(lyxview_->input_lyxscale, tostr(igp.lyxscale).c_str());
312         switch (igp.lyxsize_type) {
313             case InsetGraphicsParams::DEFAULT_SIZE: {
314                 fl_set_button(lyxview_->button_lyxasis,1);
315                 setEnabled(lyxview_->input_lyxwidth, 0);
316                 setEnabled(lyxview_->choice_width_lyxwidth, 0);
317                 setEnabled(lyxview_->input_lyxheight, 0);
318                 setEnabled(lyxview_->choice_width_lyxheight, 0);
319                 setEnabled(lyxview_->input_lyxscale, 0);
320                 break;
321             }
322             case InsetGraphicsParams::WH: {
323                 fl_set_button(lyxview_->button_lyxwh, 1);
324                 setEnabled(lyxview_->input_lyxwidth, 1);
325                 setEnabled(lyxview_->choice_width_lyxwidth, 1);
326                 setEnabled(lyxview_->input_lyxheight, 1);
327                 setEnabled(lyxview_->choice_width_lyxheight, 1);
328                 setEnabled(lyxview_->input_lyxscale, 0);
329                 break;
330             }
331             case InsetGraphicsParams::SCALE: {
332                 fl_set_button(lyxview_->button_lyxscale, 1);
333                 setEnabled(lyxview_->input_lyxwidth, 0);
334                 setEnabled(lyxview_->choice_width_lyxwidth, 0);
335                 setEnabled(lyxview_->input_lyxheight, 0);
336                 setEnabled(lyxview_->choice_width_lyxheight, 0);
337                 setEnabled(lyxview_->input_lyxscale, 1);
338                 break;
339             }
340         }
341
342         // the size section
343         // Update the draft and clip mode
344         updateWidgetsFromLength(size_->input_width,
345                 size_->choice_width_units,igp.width,defaultUnit);
346         updateWidgetsFromLength(size_->input_height,
347                 size_->choice_height_units,igp.height,defaultUnit);
348         fl_set_input(size_->input_scale, tostr(igp.scale).c_str());
349         switch (igp.size_type) {
350             case InsetGraphicsParams::DEFAULT_SIZE: {
351                 fl_set_button(size_->button_asis,1);
352                 setEnabled(size_->input_width, 0);
353                 setEnabled(size_->choice_width_units, 0);
354                 setEnabled(size_->input_height, 0);
355                 setEnabled(size_->choice_height_units, 0);
356                 setEnabled(size_->check_aspectratio, 0);
357                 setEnabled(size_->input_scale, 0);
358                 break;
359             }
360             case InsetGraphicsParams::WH: {
361                 fl_set_button(size_->button_wh, 1);
362                 setEnabled(size_->input_width, 1);
363                 setEnabled(size_->choice_width_units, 1);
364                 setEnabled(size_->input_height, 1);
365                 setEnabled(size_->choice_height_units, 1);
366                 setEnabled(size_->check_aspectratio, 1);
367                 setEnabled(size_->input_scale, 0);
368                 break;
369             }
370             case InsetGraphicsParams::SCALE: {
371                 fl_set_button(size_->button_scale, 1);
372                 setEnabled(size_->input_width, 0);
373                 setEnabled(size_->choice_width_units, 0);
374                 setEnabled(size_->input_height, 0);
375                 setEnabled(size_->choice_height_units, 0);
376                 setEnabled(size_->check_aspectratio, 0);
377                 setEnabled(size_->input_scale, 1);
378                 break;
379             }
380         }
381         fl_set_button(size_->check_aspectratio, igp.keepAspectRatio);
382         
383         // the bb section               
384         // set the bounding box values, if exists. First we need the whole
385         // path, because the controller knows nothing about the doc-dir
386         controller().bbChanged = false;
387         if (igp.bb.empty()) {
388             string const fileWithAbsPath =
389                 MakeAbsPath(igp.filename, OnlyPath(igp.filename));      
390             string const bb = controller().readBB(fileWithAbsPath);
391             if (!bb.empty()) {          
392                 // get the values from the file
393                 // in this case we always have the point-unit
394                 fl_set_input(bbox_->input_bb_x0, token(bb,' ',0).c_str());
395                 fl_set_input(bbox_->input_bb_y0, token(bb,' ',1).c_str());
396                 fl_set_input(bbox_->input_bb_x1, token(bb,' ',2).c_str());
397                 fl_set_input(bbox_->input_bb_y1, token(bb,' ',3).c_str());
398             } else {            // no bb from file
399                     fl_set_input(bbox_->input_bb_x0, bb.c_str());
400                     fl_set_input(bbox_->input_bb_y0, bb.c_str());
401                     fl_set_input(bbox_->input_bb_x1, bb.c_str());
402                     fl_set_input(bbox_->input_bb_y1, bb.c_str());
403             }
404             string const unit("pt");
405             fl_set_choice_text(bbox_->choice_bb_units, unit.c_str());
406         } else {                                // get the values from the inset
407             controller().bbChanged = true;
408             LyXLength anyLength;
409             anyLength = LyXLength(token(igp.bb,' ',0));
410             updateWidgetsFromLength(bbox_->input_bb_x0,
411                         bbox_->choice_bb_units,anyLength,"pt");
412             anyLength = LyXLength(token(igp.bb,' ',1));
413             updateWidgetsFromLength(bbox_->input_bb_y0,
414                         bbox_->choice_bb_units,anyLength,"pt");
415             anyLength = LyXLength(token(igp.bb,' ',2));
416             updateWidgetsFromLength(bbox_->input_bb_x1,
417                         bbox_->choice_bb_units,anyLength,"pt");
418             anyLength = LyXLength(token(igp.bb,' ',3));
419             updateWidgetsFromLength(bbox_->input_bb_y1,
420                         bbox_->choice_bb_units,anyLength,"pt");
421         }
422         fl_set_button(bbox_->button_clip, igp.clip);
423
424         // the special section
425         fl_set_input(special_->input_special, igp.special.c_str());
426 }
427
428
429 namespace {
430
431 bool isValid(FL_OBJECT * ob)
432 {
433         string const input = getStringFromInput(ob);
434         return input.empty() || isValidLength(input) || isStrDbl(input);
435 }
436
437 } // namespace anon
438
439  
440         
441 ButtonPolicy::SMInput FormGraphics::input(FL_OBJECT * ob, long)
442 {
443         // the file section
444         if (ob == file_->button_browse) {
445                 // Get the filename from the dialog
446                 string const in_name = getStringFromInput(file_->input_filename);
447                 string const out_name = controller().Browse(in_name);
448                 if (out_name != in_name && !out_name.empty()) {
449                         fl_set_input(file_->input_filename, out_name.c_str());
450                 }
451         } else if (ob == file_->check_subcaption) {
452                 setEnabled(file_->input_subcaption,
453                            fl_get_button(file_->check_subcaption));
454         } else if (ob == file_->check_rotate) {
455                 setEnabled(file_->input_rotate_angle,
456                            fl_get_button(file_->check_rotate));
457                 setEnabled(file_->choice_origin,
458                            fl_get_button(file_->check_rotate));
459
460         // the lyxview section
461         } else if (ob == lyxview_->button_lyxasis) {
462                 setEnabled(lyxview_->input_lyxwidth, 0);
463                 setEnabled(lyxview_->choice_width_lyxwidth, 0);
464                 setEnabled(lyxview_->input_lyxheight, 0);
465                 setEnabled(lyxview_->choice_width_lyxheight, 0);
466                 setEnabled(lyxview_->input_lyxscale, 0);
467         } else if (ob == lyxview_->button_lyxwh) {
468                 setEnabled(lyxview_->input_lyxwidth, 1);
469                 setEnabled(lyxview_->choice_width_lyxwidth, 1);
470                 setEnabled(lyxview_->input_lyxheight, 1);
471                 setEnabled(lyxview_->choice_width_lyxheight, 1);
472                 setEnabled(lyxview_->input_lyxscale, 0);
473         } else if (ob == lyxview_->button_lyxscale) {
474                 setEnabled(lyxview_->input_lyxwidth, 0);
475                 setEnabled(lyxview_->choice_width_lyxwidth, 0);
476                 setEnabled(lyxview_->input_lyxheight, 0);
477                 setEnabled(lyxview_->choice_width_lyxheight, 0);
478                 setEnabled(lyxview_->input_lyxscale, 1);
479         } else if (ob == lyxview_->button_latex_values) {
480             LyXLength dummy = LyXLength(getLengthFromWidgets(size_->input_width,
481                 size_->choice_width_units));
482             updateWidgetsFromLength(lyxview_->input_lyxwidth,
483                 lyxview_->choice_width_lyxwidth, dummy, defaultUnit);
484             dummy = LyXLength(getLengthFromWidgets(size_->input_height,
485                 size_->choice_width_units));
486             updateWidgetsFromLength(lyxview_->input_lyxheight,
487                 lyxview_->choice_width_lyxheight, dummy, defaultUnit);
488             string const scale = getStringFromInput(size_->input_scale);
489             fl_set_input(lyxview_->input_lyxscale, scale.c_str());
490
491         // the bb section
492         } else if (!controller().bbChanged && 
493                   (ob == bbox_->choice_bb_units ||
494                    ob == bbox_->input_bb_x0 || ob == bbox_->input_bb_y0 ||
495                    ob == bbox_->input_bb_x1 || ob == bbox_->input_bb_y1)) {
496             controller().bbChanged = true; 
497         } else if (ob == bbox_->button_getBB) {
498             string const filename = getStringFromInput(file_->input_filename);
499             if (!filename.empty()) {
500                 string const fileWithAbsPath = MakeAbsPath(filename, OnlyPath(filename));       
501                 string bb = controller().readBB(fileWithAbsPath);
502                 if (!bb.empty()) {
503                     fl_set_input(bbox_->input_bb_x0, token(bb,' ',0).c_str());
504                     fl_set_input(bbox_->input_bb_y0, token(bb,' ',1).c_str());
505                     fl_set_input(bbox_->input_bb_x1, token(bb,' ',2).c_str());
506                     fl_set_input(bbox_->input_bb_y1, token(bb,' ',3).c_str());
507                     string const unit("pt");
508                     fl_set_choice_text(bbox_->choice_bb_units, unit.c_str());
509                 }
510                 controller().bbChanged = false;
511             } else {
512                     fl_set_input(bbox_->input_bb_x0, "");
513                     fl_set_input(bbox_->input_bb_y0, "");
514                     fl_set_input(bbox_->input_bb_x1, "");
515                     fl_set_input(bbox_->input_bb_y1, "");
516                     fl_set_choice_text(bbox_->choice_bb_units, "pt");
517             }
518
519         // the size section
520         } else if (ob == size_->button_asis) {
521                 setEnabled(size_->input_width, 0);
522                 setEnabled(size_->choice_width_units, 0);
523                 setEnabled(size_->input_height, 0);
524                 setEnabled(size_->choice_height_units, 0);
525                 setEnabled(size_->check_aspectratio, 0);
526                 setEnabled(size_->input_scale, 0);
527         } else if (ob == size_->button_wh) {
528                 setEnabled(size_->input_width, 1);
529                 setEnabled(size_->choice_width_units, 1);
530                 setEnabled(size_->input_height, 1);
531                 setEnabled(size_->choice_height_units, 1);
532                 setEnabled(size_->check_aspectratio, 1);
533                 setEnabled(size_->input_scale, 0);
534         } else if (ob == size_->button_scale) {
535                 setEnabled(size_->input_width, 0);
536                 setEnabled(size_->choice_width_units, 0);
537                 setEnabled(size_->input_height, 0);
538                 setEnabled(size_->choice_height_units, 0);
539                 setEnabled(size_->check_aspectratio, 0);
540                 setEnabled(size_->input_scale, 1);
541         } else if (ob == size_->button_lyx_values) {
542             LyXLength dummy = LyXLength(getLengthFromWidgets(
543                 lyxview_->input_lyxwidth, lyxview_->choice_width_lyxwidth));
544             updateWidgetsFromLength(size_->input_width,
545                 size_->choice_width_units, dummy, defaultUnit);
546             dummy = LyXLength(getLengthFromWidgets(lyxview_->input_lyxheight,
547                 lyxview_->choice_width_lyxheight));
548             updateWidgetsFromLength(size_->input_height,
549                 size_->choice_height_units, dummy, defaultUnit);
550             string const scale = getStringFromInput(lyxview_->input_lyxscale);
551             fl_set_input(size_->input_scale, scale.c_str());
552         }
553
554         // check if the input is valid
555         bool invalid = !isValid(bbox_->input_bb_x0);
556         invalid = invalid || !isValid(bbox_->input_bb_x1);
557         invalid = invalid || !isValid(bbox_->input_bb_y0);
558         invalid = invalid || !isValid(bbox_->input_bb_y1);
559         invalid = invalid || !isValid(size_->input_width);
560         invalid = invalid || !isValid(size_->input_height);
561         invalid = invalid || !isValid(lyxview_->input_lyxwidth);
562         invalid = invalid || !isValid(lyxview_->input_lyxheight);
563
564         // deactivate OK/ Apply buttons and
565         // spit out warnings if invalid
566         if (ob == bbox_->input_bb_x0 || ob == bbox_->input_bb_x1 || 
567             ob == bbox_->input_bb_y0 || ob == bbox_->input_bb_y1 || 
568             ob == size_->input_width || ob == size_->input_height || 
569             ob == lyxview_->input_lyxwidth || ob == lyxview_->input_lyxheight) {
570                 if (invalid) {
571                         fl_set_object_label(dialog_->text_warning,
572                                 _("Warning: Invalid Length!"));
573                         fl_show_object(dialog_->text_warning);
574                         return ButtonPolicy::SMI_INVALID;
575                 } else {
576                         fl_hide_object(dialog_->text_warning);
577                 }
578         }
579
580         return ButtonPolicy::SMI_VALID;
581 }
582