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