2 * \file xforms_resize.C
3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
6 * \author Angus Leeming
8 * Full author contact details are available in file CREDITS
14 #include "xforms_resize.h"
15 #include "support/LAssert.h"
16 #include <algorithm> // std::max. Use FL_max in .c code...
17 #include FORMS_H_LOCATION
21 /* This is hacked straight out of the xforms source.
22 It is fl_adjust_form_size without the last few lines that do the
25 double get_scaling_factor(FL_FORM * form)
28 float xfactor, yfactor, max_factor, factor;
30 float xm = 0.5f, ym = 0.5f;
33 // if (fl_no_connection)
36 max_factor = factor = 1.0f;
37 for (ob = form->first; ob; ob = ob->next)
39 if ((ob->align == FL_ALIGN_CENTER || (ob->align & FL_ALIGN_INSIDE) ||
40 ob->objclass == FL_INPUT) &&
41 !ob->is_child && *(ob->label) && ob->label[0] != '@' &&
42 ob->boxtype != FL_NO_BOX &&
43 (ob->boxtype != FL_FLAT_BOX || ob->objclass == FL_MENU))
45 fl_get_string_dimension(ob->lstyle, ob->lsize, ob->label,
46 strlen(ob->label), &sw, &sh);
48 bw = (ob->boxtype == FL_UP_BOX || ob->boxtype == FL_DOWN_BOX) ?
51 if (ob->objclass == FL_BUTTON &&
52 (ob->type == FL_RETURN_BUTTON || ob->type == FL_MENU_BUTTON))
53 sw += FL_min(0.6f * ob->h, 0.6f * ob->w) - 1;
55 if (ob->objclass == FL_BUTTON && ob->type == FL_LIGHTBUTTON)
56 sw += FL_LIGHTBUTTON_MINSIZE + 1;
58 if (sw <= (ob->w - 2 * (bw + xm)) && sh <= (ob->h - 2 * (bw + ym)))
61 if ((osize = ob->w - 2 * (bw + xm)) <= 0)
63 xfactor = (float) sw / (float)osize;
65 if ((osize = ob->h - 2 * (bw + ym)) <= 0)
67 yfactor = (float) sh / osize;
69 if (ob->objclass == FL_INPUT)
72 yfactor = (sh + 1.6f) / osize;
75 if ((factor = FL_max(xfactor, yfactor)) > max_factor)
82 if (max_factor <= 1.0f)
85 max_factor = 0.01f * (int) (max_factor * 100.0f);
87 if (max_factor > 1.25f)
94 double get_tabfolder_scale_to_fit(FL_OBJECT * folder)
96 lyx::Assert(folder && folder->objclass == FL_TABFOLDER);
98 fl_freeze_form(folder->form);
99 int const saved_folder_id = fl_get_folder_number(folder);
102 int const size = fl_get_tabfolder_numfolders(folder);
103 for (int i = 0; i < size; ++i) {
104 fl_set_folder_bynumber(folder, i+1);
105 FL_FORM * leaf = fl_get_folder(folder);
106 factor = std::max(factor, get_scale_to_fit(leaf));
109 fl_set_folder_bynumber(folder, saved_folder_id);
110 fl_unfreeze_form(folder->form);
116 void scale_tabfolder_horizontally(FL_OBJECT * folder, double factor)
118 lyx::Assert(folder && folder->objclass == FL_TABFOLDER);
120 fl_freeze_form(folder->form);
121 int const saved_folder_id = fl_get_folder_number(folder);
123 int const size = fl_get_tabfolder_numfolders(folder);
124 for (int i = 0; i < size; ++i) {
125 fl_set_folder_bynumber(folder, i+1);
126 FL_FORM * leaf = fl_get_folder(folder);
127 scale_form_horizontally(leaf, factor);
130 fl_set_folder_bynumber(folder, saved_folder_id);
131 fl_unfreeze_form(folder->form);
137 double get_scale_to_fit(FL_FORM * form)
141 double factor = get_scaling_factor(form);
142 for (FL_OBJECT * ob = form->first; ob; ob = ob->next) {
143 if (ob->objclass == FL_TABFOLDER)
144 factor = std::max(factor,
145 get_tabfolder_scale_to_fit(ob));
151 void scale_form_horizontally(FL_FORM * form, double factor)
158 fl_scale_form(form, factor, 1);
160 for (FL_OBJECT * ob = form->first; ob; ob = ob->next) {
161 if (ob->objclass == FL_TABFOLDER)
162 scale_tabfolder_horizontally(ob, factor);