src/frontends/xforms/FormBase.C

   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  * \author Angus Leeming <a.leeming@ic.ac.uk>
  11  */
  12
  13 #include <config.h>
  14
  15 #ifdef __GNUG__
  16 #pragma implementation
  17 #endif
  18
  19 #include "Dialogs.h"
  20 #include "FormBase.h"
  21 #include "xformsBC.h"
  22 #include "support/LAssert.h"
  23
  24 extern "C" {
  25         // Callback function invoked by xforms when the dialog is closed by the
  26         // window manager
  27         static int C_FormBaseWMHideCB(FL_FORM * form, void *);
  28
  29 }
  30
  31
  32 FormBase::FormBase(ControlButtons & c, string const & t, bool allowResize)
  33         : ViewBC<xformsBC>(c), minw_(0), minh_(0), allow_resize_(allowResize),
  34           title_(t)
  35 {}
  36
  37
  38 void FormBase::redraw()
  39 {
  40         if (form() && form()->visible)
  41                 fl_redraw_form(form());
  42 }
  43
  44
  45 void FormBase::show()
  46 {
  47         if (!form()) {
  48                 build();
  49         }
  50
  51         // use minw_ to flag whether the dialog has ever been shown
  52         // (Needed now that build() is/should be called from the controller)
  53         if (minw_ == 0) {
  54                 bc().refresh();
  55
  56                 // work around dumb xforms sizing bug
  57                 minw_ = form()->w;
  58                 minh_ = form()->h;
  59
  60                 fl_set_form_atclose(form(), C_FormBaseWMHideCB, 0);
  61         }
  62
  63         fl_freeze_form(form());
  64         update();  // make sure its up-to-date
  65         fl_unfreeze_form(form());
  66
  67         if (form()->visible) {
  68                 fl_raise_form(form());
  69                 /* This XMapWindow() will hopefully ensure that
  70                  * iconified dialogs are de-iconified. Mad props
  71                  * out to those crazy Xlib guys for forgetting a
  72                  * XDeiconifyWindow(). At least WindowMaker, when
  73                  * being notified of the redirected MapRequest will
  74                  * specifically de-iconify. From source, fvwm2 seems
  75                  * to do the same.
  76                  */
  77                 XMapWindow(fl_get_display(), form()->window);
  78         } else {
  79                 // calls to fl_set_form_minsize/maxsize apply only to the next
  80                 // fl_show_form(), so this comes first.
  81                 fl_set_form_minsize(form(), minw_, minh_);
  82                 if (!allow_resize_)
  83                         fl_set_form_maxsize(form(), minw_, minh_);
  84
  85                 fl_show_form(form(),
  86                         FL_PLACE_MOUSE | FL_FREE_SIZE,
  87                         (controller_.IconifyWithMain() ? FL_TRANSIENT : 0),
  88                         title_.c_str());
  89         }
  90 }
  91
  92
  93 void FormBase::hide()
  94 {
  95         if (form() && form()->visible)
  96                 fl_hide_form(form());
  97 }
  98
  99
 100 void FormBase::InputCB(FL_OBJECT * ob, long data)
 101 {
 102         // It is possible to set the choice to 0 when using the
 103         // keyboard shortcuts. This work-around deals with the problem.
 104         if (ob && ob->objclass == FL_CHOICE && fl_get_choice(ob) < 1) {
 105                 fl_set_choice(ob, 1);
 106         }
 107
 108         bc().input(input(ob, data));
 109 }
 110
 111
 112 ButtonPolicy::SMInput FormBase::input(FL_OBJECT *, long)
 113 {
 114         return ButtonPolicy::SMI_VALID;
 115 }
 116
 117
 118 namespace {
 119
 120 FormBase * GetForm(FL_OBJECT * ob)
 121 {
 122         lyx::Assert(ob && ob->form && ob->form->u_vdata);
 123         FormBase * pre = static_cast<FormBase *>(ob->form->u_vdata);
 124         return pre;
 125 }
 126
 127 } // namespace anon
 128
 129
 130 extern "C" {
 131
 132         static
 133         int C_FormBaseWMHideCB(FL_FORM * form, void *)
 134         {
 135                 // Close the dialog cleanly, even if the WM is used to do so.
 136                 lyx::Assert(form && form->u_vdata);
 137                 FormBase * pre = static_cast<FormBase *>(form->u_vdata);
 138                 pre->CancelButton();
 139                 return FL_CANCEL;
 140         }
 141
 142
 143         void C_FormBaseApplyCB(FL_OBJECT * ob, long)
 144         {
 145                 GetForm(ob)->ApplyButton();
 146         }
 147
 148
 149         void C_FormBaseOKCB(FL_OBJECT * ob, long)
 150         {
 151                 GetForm(ob)->OKButton();
 152         }
 153
 154
 155         void C_FormBaseCancelCB(FL_OBJECT * ob, long)
 156         {
 157                 FormBase * form = GetForm(ob);
 158                 form->CancelButton();
 159         }
 160
 161
 162         void C_FormBaseRestoreCB(FL_OBJECT * ob, long)
 163         {
 164                 GetForm(ob)->RestoreButton();
 165         }
 166
 167
 168         void C_FormBaseInputCB(FL_OBJECT * ob, long d)
 169         {
 170                 GetForm(ob)->InputCB(ob, d);
 171         }
 172
 173
 174         // To trigger an input event when pasting in an xforms input object
 175         // using the middle mouse button.
 176         int C_CutandPastePH(FL_OBJECT * ob, int event,
 177                             FL_Coord, FL_Coord, int key, void *)
 178         {
 179                 if ((event == FL_PUSH) && (key == 2)
 180                     && (ob->objclass == FL_INPUT)) {
 181                         C_FormBaseInputCB(ob, 0);
 182                 }
 183                 return 0;
 184         }
 185
 186 }